taxonID	type	description	language	source
03DC0024FFDCFFBEFCF6FB4EBED60424.taxon	description	We focus on the morphological variation among Impatiens species from Myanmar. States of the selected characters of each species are shown in Table 2.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFD6FFB6FCF6FD65BEFB03B0.taxon	description	Phenology — Flowering: June to August; fruiting: June to September. Distribution — Myanmar (Mon State, Shan State), India (Bengal, Madras), Ceylon, southern China (Hainan), Cambodia, Laos, Malay Peninsula, SW Celebes, Java. Ecology — Ditches, marshy places, stagnant pools and rice paddies, 0 – 100 m altitude. Other collections examined. MYANMAR, Mon State, Ruchisansakun & Thet Yu New 714 (L L 2071076, RAF), Mawlamyine, Kalagon, N 16 ° 32 ' 00.29 " E 97 ° 42 ' 53.85 ", alt. 39 m, 20 Aug. 2015; Shan State, Dewan Mohinder Nath Nair & U Maung Pyone 1563 (RANG RANG 2460), in Phaw Kone village, Inie lake, 2 May 1957. Notes — Hydrocera is distinctly different from Impatiens by its berry-like instead of dehiscent fruit and five free petals instead of lateral united petals. We select Klein s. n. (HAL 0118810) as lectotype because it was verified by Willdenow and deposited in Halle, Germany, where he worked before the protologue was published (Tkach et al. 2016). II. Impatiens Riv. ex L. Impatiens Riv. ex L. (1753) 937; (1754) 403; DC. (1824) 687; Roxb. & Carey (1824) 452; Roxb. (1832) 651; Wight & Arn. (1834) 135; Hook. f. & Thomson (1860) 118; Hook. f. (1875) 440; Vivek. et al. (1997) 99; Y. L. Chen et al. (2007) 43. — Type: Impatiens noli­tangere L. (1753) 938. Balsamina Tourn. ex Scop. (1772) 183; Mill. (1754) without page numbers. — Balsamina Tourn. (1719) 418, synon in Druce (1913) 429. — Type: Balsamina noli­tangere Scop. (1772) 184.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFD2FFB1FFAFFBD8BE4B06FA.taxon	description	Impatiens laevigata var. laevigata Wall. ex Hook. f. & Thomson (1860) 146; Hook. f. (1875) 473; (1905) 30; W. J. Kress et al. (2003) 170; Gogoi et al. (2013) 311. — Impatiens laevigata Wall. (1831) 168, nom. nud. — Type: Francis De Silva 326 (Wall. Cat. no. 4753) (lecto, designated here K K 000694815; isolecto G G 00237319 *, G G 00237320 *, K K 001039825, L L 2325369, M M 0211761 *, M M 0211762 *, P P 04543237, P P 04543244, PH PH 00015839 *, S-G- 33525), Sylhet (Sillet), Oct. 1820.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFD2FFB1FFAFFBD8BE4B06FA.taxon	description	Terrestrial, perennial woody shrub, glabrous, 30 – 100 cm tall. Stem erect, simple to richly branched, green to red. Leaves spirally arranged, crowded on the upper part. Petiole (8 –) 25 – 70 mm long. Lamina 75 – 190 by 30 – 65 mm, elliptic, oblanceolate, to narrowly oblanceolate, apex acute to acuminate and mucronate, rarely emarginate, base attenuate to cuneate, margin shallowly serrate to shallowly crenate with minute teeth at sinus, adaxial pale green to dark green, abaxial pale green, with one pair of distinct short stalked-clavate glands on the petiole; lateral veins 5 – 6 (– 8) pairs. Inflorescence axillary, 1 – 4 - flowered subumbellate raceme. Peduncle 8 – 20 mm long, with many white silica streaks. Rachis <1 mm long. Flowers 25 – 26 mm long, 35 – 40 mm deep, yellowish white, tinged with pink, slightly asymmetric. Bracts (4 –) 6 – 10 by (2 –) 3 – 4 mm, ovate to ovate-lanceolate, apex acute, base cuneate to obtuse, margin slightly crenate, with two glands on each side of the margin, green, persistent. Pedicel (10 –) 14 – 20 mm. Lateral sepals 4: the upper pair 12 – 20 by 1.5 – 4 mm, falcate, apex acute, base cuneate, pale yellow; the lower pair 11 – 12 by 3 – 9 mm, free, broadly ovate to orbicular, apex acute to obtuse and mucronate, base obtuse to round, margin slightly serrate with 2 pairs of glands, greenish yellow, margin slightly serrate with 2 or 3 teeth. Lower sepal 13 – 18 mm long, 10 – 12 mm deep, bucciniform, apex acute and mucronate, red inside, distal part rapidly constricted into a hooked spur, 14 – 22 mm long, tip swollen. Dorsal petal 15 – 16 by 22 – 23 mm, broadly elliptic to broadly obovate, apex cuspidate, base truncate, yellow, abaxial midvein with a broadly obtuse crest, 2 – 3 mm wide. Lateral united petals 25 – 26 mm long, free: the upper petals 11 – 12 by 11 – 12 mm, elliptic, yellow and pink; the lower petals c. 15 by 7 mm, obovate, apex slightly emarginate, base auricled, yellow and streaked with red lines. Stamens: filaments 8 – 12 mm long, pale green to pale yellow; anthers yellow. Ovary 22 – 38 by 18 – 20 mm, 4 - locular. Fruits 20 – 22 mm long, 4 – 5 mm diam, cylindrical. Seeds c. 2, 3 mm diam. Phenology — Flowering: August to December; fruiting: October to December. Distribution — Myanmar (Kachin State), India, Bangladesh, Nepal. Habitat & Ecology — Growing in shady areas in evergreen forest, 400 – 1600 m altitude. Other collections examined. MYANMAR, Kachin State, Lace 6035 (K H 2015 / 00092 151), Myitkyina, Trinton, alt. 600 – 3000 ft (183 – 914 m), 18 Nov. 1912; Toppin 4300 (K H 2015 / 00092 153), Kachin Hills, Kumtat, 1500 ft (457 m), Hologany 1350 ft (412 m), Hja Kha 1300 ft (400 m); Kingdon­Ward 7322 (K), Kingdon­Ward 7325 (K), Valley of the Nam Hat, N 27 ° 35 ' E 97 ° 55 ', alt. 2000 – 3000 ft (610 – 914 m), 20 Aug. 1926; Saw­Lwin KSL 1026 (L), Hkakabo Razi National Park, 2015. Notes — Impatiens laevigata var. laevigata is very similar to I. laevigata var. grandifolia Hook. f. (1910 a: 299), an endemic to Northeast India, but differs in having yellow flowers and oblong bracts, whereas I. laevigata var. grandifolia has white-yellowish flowers, ovate to ovate-lanceolate bracts. This species is highly variable in leaf size and although Hooker (1910 a) described I. laevigata var. grandifolia using the larger leaf size as a dis- tinguishing character from I. laevigata var. laevigata, we found that variation in leaf size is continuous without clear distinct size ranges. Since there are several duplicates of Wall. Cat. no. 4753, we select the specimen Wall. Cat. no. 4753 (K 000694815) as the lectotype of I. laevigata var. laevigata because it is a complete specimen with a dissected flower and also included illustration by Hooker.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFD3FFB3FCF6F876B8CD020C.taxon	description	Phenology — Flowering: June to October; fruiting: August to November. Distribution — Southern Myanmar (Mon State), northern and north-western Thailand. Ecology — There is no information on the ecology of this species for Myanmar. In Thailand, it grows on limestone in lowland forest, sometimes in shady areas near waterfalls, 300 – 1000 m altitude. Note — Impatiens parishii is very similar to I. kerriae but differs in having a shorter pedicel than petiole, four lateral sepals instead of two, wavy red streaks on the lower lateral united petals rarely present while always present and showy in I. kerriae. Shimizu (1970) mentioned that the spur of I. parishii is not bilobed, whereas I. kerriae has a deeply bilobed spur, however, we found that this character is variable within both species. Impatiens parishii usually grows at around 500 m altitude while I. kerriae grows at around 1500 m altitude.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFD1FFB3FFAFFCDCBE470551.taxon	description	Phenology — Flowering: November to December; fruiting: November to January. Distribution — Myanmar (Shan State), northern Thailand. Ecology — Growing on limestone in shady or open areas in mixed deciduous forest, 1200 – 2200 m altitude. Other collections examined. MYANMAR, Shan State, Makino BG exped. 3274 (L, MBK, RAF), Taunggyi District; Ruchisansakun & Makino BG 737 (L, MAND, RAF), Taunggyi District, Nagali village, N 21 ° 07 ' 32.67 " E 96 ° 23 ' 47.82 ", alt. 1257 m, 29 Sept. 2015. Notes — Impatiens kerriae is a new record for Myanmar, previously only found in Thailand. It is very similar to I. parishii but differs in having a longer pedicel than petiole, 2 lateral petals, and wavy red streaks on the lower lateral united petals, while I. parishii always has a yellow mark at the base of the lower lateral united petals. The population in Taunggyi differs from the population in Chiang Mai in having longer petioles (65 – 90 mm vs <10 mm), much larger laminas (16 – 26 by 7 – 95 mm vs 110 by 60 mm), and in the number of lateral veins (14 – 16 vs 6 – 12). These differences may be explained by the higher altitude of the Chiang Mai site, where a windy and nutrient-poor environment may lead to reduced growth. Hooker annotated the specimens Khalil s. n. (K K 000694776) and Lace 4154 (K H 2015 / 00092 27) as I. platysepala, non Impatiens platysepala Y. L. Chen (1988) 6, but this was never officially published. We found no differences between those specimens and I. kerriae. This species is pollinated by bumblebees (Ruchisansakun et al. 2016). Due to the asymmetric lower lateral sepals, the body of the bumblebee tilts over to the right-hand side when it enters the flower resulting in the deposition of the pollen on the left side of the upper thorax.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFD1FFADFCF6FBEDB8B1092C.taxon	description	Impatiens capillipes Hook. f. & Thomson (1860) 135; Hook. f. (1875) 456; (1905) 26; W. J. Kress et al. (2003) 169. — Type: Lobb 388 (lecto, designated here K K 000694718; isolecto K K 000694717), Myanmar (Burma), Moulmein, 1892. Lithophytic, annual, glabrous herb, 25 – 40 cm tall. Stem erect, 2 – 4 mm diam, richly branched, angular, purple. Leaves spirally arranged. Petiole 8 – 15 mm long, 1 – 1.5 mm diam, angular, Map 4 Distribution of Impatiens laevigata Wall. ex Hook. f. & Thomson var. laevigata (●), I. kerriae Craib (●), I. parishii Hook. f. (●) and I. capillipes Hook. f. & Thomson (●). purple. Lamina 45 – 90 by 9 – 18 mm, narrowly ovate to narrowly lanceolate, apex acute to acuminate, base obtuse to attenuate, margin serrate, adaxial dark green, abaxial glaucous, with a purple clavate gland on each side of margin at or near the base; lateral veins 12 – 14 pairs. Inflorescence axillary, 2 – 4 - flowered racemes. Peduncle, absent – 2 mm long, <1 mm diam, green. Flowers 8 – 10 by 8 – 9 mm, 4 – 5 mm deep, non-resupinate, white with pink and yellow marks. Pedicel c. 8 mm long, <1 mm diam, green to purple. Rachis c. 10 mm long, <1 mm diam, green to purple. Bracts <1 by 1 mm, lanceolate, apex acute, base cuneate, green. Lateral sepals 2, c. 1.5 by 1 mm, free, ovate to elliptic, apex acute, base obtuse, pale green. Lower sepal c. 3 – 4 by 2.5 mm, c. 2 mm deep, shallowly navicular, white with yellow mark and red dots at basal part, distal part abruptly constricted into an upward incurved spur, 1.5 mm long, white with green tip, blunt. Dorsal petal c. 5 by 2 mm, oblong, flat, apex acuminate, base cuneate, white, abaxial midvein simple. Lateral united petals connate: the upper pair c. 5 by 2 – 2.5 mm, ovate, apex acuminate, base obtuse, white; the lower pair 2.5 – 3 by 1 – 1.5 mm, connate, ovate, apex acuminate, white with purple spots at the base. Stamens: filaments c. 2 mm long, pink; anthers purple. Ovary c. 1.5 mm long, <1 mm diam, 4 - carpellate, white. Fruits c. 8 mm long, 2.5 – 3 mm diam, clavate, 4 - lobed, purplish green. Seeds 4. Phenology — Flowering: November to December; fruiting: November to December. Distribution — Endemic to southern Myanmar (Kayin State, Mon State). Ecology — Growing on limestone in mixed deciduous forest, 10 – 100 m altitude. Other collections examined. MYANMAR, Kayin State, Ruchisansakun & Thet Yu Nwe 744 (L, RAF, YNG), Hpa-An, Hae Pyan Cave, N 16 ° 50 ' 08.0 " 97 ° 34 ' 13.0 ", alt. 10 m, 18 Oct. 2015; Ruchisansakun & Thet Yu Nwe 749 (L, RAF, YNG), Hpa-An, N 16 ° 44 ' 59.8 " E 97 ° 47 ' 04.8 ", 20 Oct. 2015; Mon State, Lobb 368 (K K 000694716), Moulmein, 1846; Parish 454 (K), 1862; Parish s. n. (P 04614864), 1862. Notes — Impatiens capillipes is a distinct taxon characterized by very small, non-resupinate white flowers. It cannot be confused with any other Impatiens species from Myanmar. Hooker annotated two sheets of Lobb 388 (K 000694717, K 000694718) as I. capillipes. We select K 000694718 as lectotype because it includes a dissected flower and drawing.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFCFFFAEFCF6F915BFC20388.taxon	description	Impatiens lobbiana Turcz. (1859) 270. — Type: Lobb 384 (lecto, designated here KW KW 001000647 *; isolecto K K 000694801), Myanmar (Burma), Moulmein, 1846. Lithophytic, annual, glabrous herb, 30 – 60 cm tall. Stem erect, the lower part sometimes decumbent, 4 – 7 mm diam, moderately or richly branched, green with red dots. Leaves spirally arranged. Petiole 15 – 60 mm long, 2 – 2.5 mm diam, cylindrical, green with red dots adaxially. Lamina 85 – 130 by 35 – 50 mm, ovate, apex acuminate, base attenuate, margin crenate, adaxial green, abaxial greyish green, with one pair of cylindrical glands near the lamina base; lateral veins 6 or 7 pairs. Flowers solitary, axillary, (18 –) 26 – 45 by (19 –) 28 – 45 (– 50) mm, (20 –) 30 – 40 (– 42) mm deep, pink. Pedicel cylindrical, 45 – 60 mm long, 1 – 1.5 mm diam, green. Bracts 4 – 7 by 1.5 – 3 mm, oblanceolate, apex acute, base cuneate, margin entire, green, persistent. Lateral sepals 2, 5 – 8 by 4 – 7 mm, free, ovate, apex acuminate, base obtuse, green. Lower sepal 11 – 15 by 5 – 5.5 – 7 mm, 3 – 7 mm deep, navicular, apex acute and mucronate, base obtuse, pale green, distal part abruptly constricted into a narrow straight to curved spur, 30 – 45 mm long, green. Dorsal petal 7 – 22 by 7 – 25 mm, obovate, strongly reflected, flat, apex obcordate and mucronate, base cuneate, pink, abaxial midvein with a crescent-shaped crest at the base. Lateral united petals 17 – 32 mm long, connate: the upper pair 10 – 25 by 7 – 21 mm, broadly oblong to obovate, apex obcordate and cuspidate, base stipitate, pink with white mark at the base (yellow when dry); the lower pair 15 – 27 by 6 – 15 mm, connate, oblong to obovate, apex shallowly emarginate and cuspidate, base without auricle, pink with white mark at the base (yellow in dried specimens), sometimes with a red line around the white mark. Stamens: filaments 2 – 4 mm long, pale green; anthers white. Ovary 2 – 4 mm long, 1 – 1.5 mm diam, 4 - carpellate, green. Fruits c. 13 mm long, 4 mm diam, clavate, 4 - lobed, green. Seeds 20 – 24, ellipsoid, c. 2 mm long, brown. Phenology — Flowering: August to October; fruiting: August to December. Distribution — Endemic to southern Myanmar (Kayin State, Mon State). Ecology — Growing on limestone in shady or open areas in the mixed deciduous forest, 30 – 70 m altitude. Other collections examined. MYANMAR, Mon State, Ruchisansakun & Thet Yu Nwe 711 (L L 2071071, RAF, RANG), Mawlamyine, Himeinkanein, N 16 ° 19 ' 19.43 " E 97 ° 42 ' 34.06 ", 19 Aug. 2015; Ruchisansakun & Thet Yu Nwe 712 (L L 2071074, RAF, RANG), Mawlamyine, Himeinkanein, N 16 ° 19 ' 02.07 " E 97 ° 42 ' 19.07 ", 20 Aug. 2015; Ruchisansakun & Thet Yu Nwe 713 (L L 2071075, RAF, RANG), Mawlamyine, Kalagon, N 16 ° 32 ' 00.29 " 97 ° 42 ' 53.85 ", 20 Aug. 2015; Ruchisansakun & Thet Yu Nwe 741 (L L 2071147), Mawlamyine, N 16 ° 22 ' 48.6 " E 97 ° 45 ' 45.4 '; Kayin State, Ruchisansakun & Thet Yu Nwe 716 (L L 2071080, RAF, RANG), Hpa-An, Zwegabin Mountain, N 16 ° 49 ' 41.99 " E 97 ° 40 ' 28.74 ", 20 Aug. 2015; Ruchisansakun & Thet Yu Nwe 743 (L L 2071149), Hpa-An, Sadan cave, N 16 ° 44 ' 21.7 " E 97 ° 43 ' 00.2 ", 18 Oct. 2015; Ruchisansakun & Thet Yu Nwe 746 (L), Hpa-An, Zwegabin mountain, 18 Oct. 2015; Ruchisansakun & Thet Yu Nwe 748 (L L 2071159), Hpa-An, 20 Oct. 2015. Map 5 Distribution of Impatiens lobbiana Turcz. (●), I. micromeris Hook. f. (●), I. psittacina Hook. f. (●) and I. tanintharyiensis Ruchis., Suksathan & Saw-Lwin (●). Notes — Impatiens lobbiana is highly variable in flower size between populations. The populations we observed in Mawlamyine have much smaller flowers than those from Hpa-An (18 – 26 mm vs 40 – 45 mm). This species is similar to I. spectabilis Triboun & Suksathan (Suksathan & Triboun 2009: 176) from Thailand but differs in having an obcordate apex on the upper lateral petals, instead of a truncate to obtuse apex. Turczaninow (1859) cited the specimen Lobb 184 in the protologue, but Lobb 184 (K 000858226) is Henckelia marginata (C. B. Clarke) A. Weber from Peninsular Malaysia. However, we believe that Lobb 384 (KW 001000647) – deposited in the National Herbarium of Ukraine (KW) – was the specimen Turczaninow was referring to, although Singapore is written on the label. However, a duplicate at Kew (K 000694801) was collected in Moulmein (Moolmein), Myanmar, and Lobb 380 ­ 385 is also from Myanmar. As we cannot confirm with certainty that the specimen Lobb 384 (KW 001000647) is a holotype, we designate it as lectotype, because it best matches the protologue.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFCCFFAEFCF6FD5AB9E10654.taxon	description	Impatiens micromeris Hook. f. (1905) 26; W. J. Kress et al. (2003) 170. — Type: Brandis s. n. (lecto, designated here K K 000694789), Myanmar, Tenassarim. Annual herb, 18 – 20 cm tall. Stem erect, c. 2.5 mm diam, richly branched. Leaves spirally arranged. Petiole 16 – 22 mm long, c. 1 mm diam. Lamina 25 – 31 by 12 – 15 mm, ovate to elliptic, apex acute to acuminate, base attenuate, the margin crenate, pilose on both sides, with one small and inconspicuous gland on each side of margin near lamina base; lateral veins 4 or 5 pairs. Inflorescence axillary, erect, solitary. Flowers c. 10 by 7 mm, c. 10 mm deep. Bracts linear, apex acute, base cuneate, margin entire, glabrous, persistent. Pedicel 14 – 17 mm long, <1 mm diam. Lateral sepals 4: the upper pair c. 0.5 mm by <0.5 mm, narrowly elliptic, apex obtuse to acute, base cuneate, glabrous; the lower pair free, c. 2 by 1 mm, ovate, apex acute and mucronate, base obtuse. Lower sepal c. 2.5 mm long, 2.5 mm deep, navicular, apex acute and mucronate, glabrous, distal part gradually tapering into a straight or curved slender spur, c. 5 mm long, with a single tip. Dorsal petal c. 5 by 3.5 mm, ovate to elliptic to oblong, apex round and mucronate, base obtuse, glabrous. Lateral united petals 9.5 – 10 mm long, connate: the upper petals c. 3 by 2 mm, ovate to obovate, apex round, base cuneate; the lower petals 8 – 8.5 by 3.5 – 4 mm, connate, ovate, apex obtuse to acute, base without auricle. Stamens unknown. Ovary c. 1.5 mm long, c. 0.5 mm diam. Fruits c. 5 mm long, 2 mm diam, fusiform. Seeds 1.5 mm long. Phenology — Flowering: September. Distribution — Endemic to southern Myanmar (Tenassarim, possibly Tanintahryi Region, Mon State, Kayin State). Ecology — Unknown. Note — The authors have not seen I. micromeris in situ. The species was described only from the type specimen. Hooker (1905) published this species with an identification key of other Impatiens and their locality but did not provide a detailed description.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFCCFFA8FCF7F8E1BAC8003B.taxon	description	Fig. 11 Impatiens micromeris Hook. f. a. Habit; b. front view of flower; c. lateral view of flowers; d. upper lateral sepals; e. lower lateral sepals; f. lower sepals; g. dorsal petal; h. lateral united petals; i. pedicel and ovary; j. fruit; k. seed. — Drawn by Saroj Ruchisansakun. serrate, adaxial green, abaxial pale green, with a short clavate gland on each side of margin near the base; lateral veins 9 or 10 pairs. Inflorescence axillary, pendulous, 2 - flowered raceme. Peduncle 1 – 2 mm long, c. 1 mm diam, green. Rachis c. 1 mm long, <1 mm diam. Flowers 33 – 37 by 27 – 34 mm, 37 – 45 mm deep, pink. Pedicel 36 – 37 mm long, c. 1 mm diam, green. Bracts 3 – 4 by 1 mm, linear to lanceolate, apex acute, base cuneate, margin entire, without gland, green, persistent. Lateral sepals 2, 10 – 13 by 9 – 11 mm, free, elliptic to obovate, apex round and mucronate, base obtuse, white to green to dark pink. Lower sepal 15 – 16 by 17 – 18 mm, 25 – 27 mm deep, deeply bucciniform, apex acuminate and mucronate, white, and red on basal part, with a yellow mark inside, distal part abruptly constricted into a short hook-like spur, 5 – 6 mm long, green. Dorsal petal 15 – 16 by 17 – 18 mm, orbicular, flat, apex round and slightly emarginate, base obtuse to round, white to pale pink, abaxial midvein with a wide crescent-shaped crest at the base, 4 – 5 mm wide, green to pink. Lateral united petals 42 – 45 mm long, connate: the upper pair 12 – 13 by 14 – 16 mm, orbicular to broadly ovate, apex round, base cuneate, white with a pale pink margin; the lower pair 33 – 35 by 10 – 11 mm, connate, broadly oblong, apex round to slightly emarginate, pink, white at the base with a yellow mark. Stamens: filaments 9 – 10 mm long, white; anthers white. Ovary 9 – 10 mm long, c. 1 mm diam, 4 - carpellate, green. Fruits 20 – 22 mm long, 2.5 – 3 mm diam, clavate, 4 - lobed, green. Seeds c. 6 – 8, ellipsoid to brick shaped with papillae, c. 2 mm long. Phenology — Flowering: September to October; fruiting: November to December. Distribution — North-eastern Myanmar (Shan State), northern Thailand. Ecology — Growing on limestone with little organic matter in shady areas in mixed deciduous forest, 1000 – 1100 m altitude. Other collections examined. MYANMAR, Shan State, Ruchisansakun et al. 727 (L L 2071111, MAND, RAF), Taunggyi District, Lwa Taw village, N 20 ° 40 ' 44.35 " E 97 ° 10 ' 31.93 ", 22 Sept. 2015. Note — Impatiens psittacina is well-known to plant collectors and horticulturists. Populations in Myanmar have mainly red spurs, whereas populations in Thailand are characterized by green spurs. The species is pollinated by bumblebees (Ruchisansakun et al. 2016), which have the pollen deposited on their thorax as they enter the flower, while their wings are spread.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFCAFFA8FFAFFE0ABF66006C.taxon	description	Impatiens tanintharyiensis Ruchis., Suksathan & Saw-Lwin in Ruchisansakun et al. (2017) 171. — Type: Ruchisansakun & Thet Yu Nwe 707 (holo L L 2071066; iso L, RAF, RANG), Myanmar, Tanintharyi Region, Dawei, Thet Kal Kwet Village, Hawang falls, alt. c. 146 m, 17 Aug. 2015. Lithophytic, annual, glabrous herb, 15 – 25 cm tall. Stem erect, cylindrical with small ridges near the nodes, 3 – 7 mm diam, unbranched to sparsely branched, upper part slightly zigzag, not swollen at nodes, red to purple with dark purple dots. Leaves spirally arranged, adaxial green, abaxial pale green. Petiole 10 – 30 mm long, 1 – 1.5 mm diam, green to red with dark red dots. Lamina 40 – 65 by 15 – 25 mm, elliptic to ovate to lanceolate, apex acute, base obtuse to attenuate, margin shallowly serrate; lateral veins 4 or 5 pairs; extrafloral nectaries present as a stalked short gland on each side of the margin at the base. Inflorescence axillary, 1 - flowered, erect. Flowers 35 – 42 by 22 – 26 mm, 28 – 32 mm deep, highly asymmetric, pink with white centre and a pair of yellow marks on base of the lower lateral petals. Bracts c. 2 by 1 mm, narrowly triangular, apex acute, green. Pedicel 20 – 30 mm long, c. 1 mm diam, pink with red dots. Lateral sepals 2, 5 – 7 by 5 – 6 mm, ovate to broadly ovate, sometimes slightly oblique, apex acute to acuminate and mucronate, base obtuse to cordate, pink with green tips. Lower sepal 13 – 16 by 8 – 10 mm, 14 – 15 mm deep, deeply bucciniform, pink outside and whitish inside with pink veins and a yellow mark, distal part gradually constricted into a curved spur, 19 – 22 mm long, pink with deep pink dots, blunt. Dorsal petal 12 – 13 by 15 – 17 mm, broadly ovate to broadly elliptic to broadly obovate, flat, recurved near the base, pink with a green tip, curved backward, apex cordate and mucronate, base cuneate, abaxial midvein with a narrow crescent-shaped crest near the base, c. 1 mm wide. Lateral united petals connate: the upper petals 12 – 15 by 18 – 22 mm, broadly obovate, apex truncate, pink with white base; the lower petals 23 – 30 by 9 – 13 mm, connate, obovate, apex round to shallowly bilobed, pink with white base and yellow mark at the base. Stamens: filaments c. 4 mm long, white; anthers white. Ovary 4 mm long, 1 mm diam, 4 - carpellate, green, glabrous. Fruits 15 – 17 mm long, c. 3 mm diam, clavate, 4 - lobed, 14 – 16 - seeded. Seeds c. 2.5 by 1 mm, brown. Phenology — Flowering: August to September; fruiting: September. Distribution — Endemic to southern Myanmar (Tanintharyi Region). Ecology — Growing on decaying organic material that is present on granular metamorphic rock of granitic schist facies, shady or open sunny areas along a waterfall, 140 – 160 m altitude. Other collections examined. MYANMAR, Tanintharyi Region, Ruchisansakun & Thet Yu Nwe 708 (L L 2071069, RAF, RANG), Dawei, Thet Kal Kwet Village, Rachaung falls, N 14 ° 24 ' 38.08 " E 98 ° 11 ' 10.43 ", alt. 155 m, growing on rocks in shady areas along a waterfall, 17 Aug. 2015. Note — Impatiens tanintharyiensis is closely related to I. spectabilis, I. psittacina and I. cardiophylla Hook. f. (1909: 14) although it is morphologically quite distinct (Ruchisansakun et al. 2017). The species differs from I. spectabilis in having asymmetric flowers and a longer spur. Further details on the differences between I. tanintharyiensis and its close allies are provided in Ruchisansakun et al. (2017). Section Impatiens in S. X. Yu et al. (2015) 191	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFCAFFA9FCF6FEECB8E103BB.taxon	description	Map 6 Distribution of Impatiens forrestii Hook. f. ex W. W. Sm. free, obovate, apex slightly obliquely emarginate, base auricled, glabrous. Stamens: filaments 5 – 5.5 mm long; anthers acute. Ovary up to 5 mm long, c. 1.5 mm diam, glabrous. Fruits 22 – 30 mm long, linear, green, glabrous. Phenology — Flowering: July to December; fruiting: August to December. Distribution — Northern Myanmar (Kachin State), southwestern China (Yunnan, Sichuan). Ecology — Growing in shady and moist areas in evergreen forest, 2500 – 3000 m altitude. Other collections examined. MYANMAR, upper Burma, Forrest 1002 (para K H 2015 / 60092 18), on the Irrawadi-Ming-Kwang divide, also in the Irrawadi basin, lat. N 25 ° 50 ', alt. 8000 – 10000 ft, Oct. 1905. Note — This species is slightly similar to I. arguta but differs in having a keel-shaped crest and a long acute appendage on the abaxial midvein of dorsal petal instead of crescent-shaped to obtuse crest without appendage (Fig. 3). Section Racemosae Hook. f. & Thomson (1860) 113	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFCBFFA9FFAFFCB9BFC80402.taxon	description	Map 7 Distribution of Impatiens radiata Hook. f. (●), I. graciliflora Hook. f. (●), I. margaritifera var. humilis Y. L. Chen (●) and I. casseabriae Y. H. Tan, S. S. Zhou & B. Yang (●). 1 – 2 mm, broadly lanceolate, apex aristate with a gland, base obtuse, margin entire, green with red at apex, glabrous, persistent. Pedicel 17 – 25 mm long, red, glabrous. Lateral sepals 2, 2 – 4 by 1.5 – 2 mm, free, obliquely ovate, apex aristate, base obtuse, dark pink, glabrous. Lower sepal 4 – 8 by c. 1 mm, 2 – 2.5 mm deep, navicular, apex mucronate, white or pink, glabrous, distal part gradually narrow into a straight spur, 17 – 24 mm long. Dorsal petal 5 – 5.5 by 4 – 5.5 mm, orbicular, cucullate, apex mucronate to aristate, base obtuse, white or pink, with red midrib, glabrous, abaxial midvein simple or with a narrow crest terminating in a short acute point. Lateral united petals 13 – 14 mm long, free: the upper petals 2.5 – 4 by 3 mm, ovate to obovate, apex round to truncate, base cuneate, white or pink; the lower petals 7 – 12 by 3 – 4 mm, free, ovate to oblong, apex acute, white or pink, glabrous. Stamens: filaments c. 4 mm long, white; anthers white. Ovary 4 – 4.5 mm long, c. 1 mm diam, 5 - carpellate, green, glabrous. Fruits up to 16 mm long, 3 mm diam, linear, 5 - lobed, glabrous; fruiting pedicels 21 – 26 mm long, <1 mm diam. Seeds unknown. Phenology — Flowering: July to December; fruiting: October to December. Distribution — Myanmar (Chin State, Mandalay Region), Bhutan (Bumthang district), China (Yunnan Province), India (Meghalaya, Sikkim, west Bengal State), Thailand (northern Thailand). Ecology — Growing among grass in open areas within the evergreen forest, 1800 – 3700 m altitude. Other collections examined. MYANMAR, Chin State, U Mg Gale­ 2 5762 (RAF 8274 / 2 sheet 1 & 2), Kanpetlet Dist., Esaken, alt. 5700 ft, 5 Sept. 1962; Murata et al. 024564 (QBG QBG 61252), Natma Taung National Park, at the foot of Mt Victoria, alt. 1800 – 2000 m, 2 Dec. 2002; Kingdon­Ward 22649 (BM), ibid., alt. 6000 ft, 2 Sept. 1956; Fujikawa et al. 053432 (QBG QBG 62063), N 21 ° 12 ' 45.4 " E 94 ° 1 ' 15 ", alt. 2260 m, 12 Aug. 2008; Ling Shein Man 055281 (QBG QBG 78573), Natma Taung National Park, 2 Aug. 2007; Fujikawa et al. s. n. (MBK 086951), 3 – 4 miles from the entrance of National Park, Natma Taung National Park, alt. c. 2200 m, 21 Feb. 2012; Ling Shein Man 087637 (QBG QBG 61275), Old Town area, Kanpetlet Township, alt. c. 1750 m, 23 Oct. 2011; Mu Mu Aung et al. 092311 (QBG QBG 70765), N 21 ° 23.790 ' E 93 ° 50.366 ', alt. 2330 m, 3 July 2013. Note — Impatiens radiata is very similar to I. graciliflora but differs in having a shorter spur, 17 – 24 mm long vs 30 mm long.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFCBFFAAFCF6FAD3B8CB03DC.taxon	description	Lateral united petals 12 – 14 mm long, free: the upper petals, c. 2 by 1.5 mm, elliptic, apex round, base obtuse; the lower petals 10.5 – 11 by 5.5 – 6.5 mm, ovate-triangular, apex obtuse, base slightly auricled, glabrous. Stamens: filaments c. 3 mm long; anthers obtuse. Ovary c. 3 mm long, glabrous. Fruits 18 – 18.5 by 1.5 – 2 mm, linear to clavate, glabrous; fruiting pedicels up to 20.5 mm long. Phenology — Flowering: August; fruiting: August. Distribution — Myanmar (Kachin State), India (Sikkim State). Ecology — Unknown, 1500 – 1850 m altitude. Other collections examined. MYANMAR, Kachin State, Kingdon­Ward 6700 (K), Seinghku-Adung confluence, 9 May 1926; Toppin 2776 (K H 2015 / 00092 21; K H 2015 / 00092 22; sheet 3; sheet 4; BM), Sinlum. Note — Impatiens graciflora is very similar to I. radiata but differs in having a longer spur. The spur length of I. radiata is rather variable, but it is never as long as in this species.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFC8FFAAFFAFF816BFC405AF.taxon	description	Impatiens casseabriae Y. H. Tan, S. S. Zhou & B. Yang in Yang et al. (2017) 104. — Type: Myanmar Exped. 248 (holo HITBC not seen; iso KUN not seen, RAF not seen), Myanmar, Kachin State, Putao, Hkakabo Razi National Park, N 27 ° 43 ' 28 " E 97 ° 51 ' 9 ", alt. 1200 m, 28 Nov. 2014. Terrestrial, annual, glabrous herb, 17 – 30 cm tall. Stem lower part erect to decumbent, upper part erect, richly branched, glabrous. Leaves spirally arranged. Petiole absent – 3 mm long, glabrous. Lamina 35 – 70 by 6 – 8 mm, narrowly elliptic to narrowly oblanceolate, apex acute, base cuneate, margin deeply sinuate, glabrous, adaxial green with red margin, abaxial pale green; lateral veins 10 or 11 pairs; without distinct extrafloral nectary glands on lamina base nor petiole. Inflorescence subterminal, erect, 1 - or 2 - flowered raceme. Peduncle 15 – 20 mm long, glabrous. Rachis 5 mm long. Flowers 30 mm long, 5 mm deep, white, slightly asymmetric. Bracts c. 3 by 1.5 mm, elliptic, apex acute and mucronate, base obtuse, margin entire, glabrous, persistent. Pedicel 10 – 12 mm long, glabrous. Lateral sepals 2, c. 3 by 2 mm, free, obliquely ovate, apex acute and mucronate, base obtuse, white to pale green, sometimes with red, glabrous apex. Lower sepal c. 9 mm long, 3 – 4 mm deep, navicular, apex acuminate and mucronate, white, glabrous, spurless. Dorsal petal c. 8 by 4 mm, ovate, cucullate, apex acute and aristate, base cuneate, glabrous, white, abaxial midvein simple. Lateral united petals 27 – 32 mm long, free: the upper petals 8 – 9 by 2.5 – 3 mm, obliquely ovate, apex acute, base cuneate, white-purple; the lower petals 25 – 30 by 4 – 6 mm, free, sickle-shaped to narrowly obovate, apex acute, white, base white with a yellow mark. Stamens: filaments c. 2.5 mm long, white; anthers white. Ovary c. 2 – 2.5 mm long, 1 mm diam, green, glabrous. Phenology — Flowering: October. Distribution — Endemic to Myanmar (Kachin State). So far only known from the type locality. Ecology — Growing on wet rocks along a waterfall in evergreen forest. Other collection examined. MYANMAR, Kachin State, Saw­Lwin 1067 (L 2 sheets, RAF, RANG), Hkakabo Razi National Park. Note — Impatiens casseabriae is morphologically similar to I. margaritifera var. humilis but differs in having a shorter petiole, narrowly elliptic to narrowly oblanceolate longer lower petals.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFC8FFAAFFAFFD6EBAC406C4.taxon	description	Phenology — Flowering: July to August. Distribution — Myanmar (Kachin State), China (Sichuan Province, Yunnan Province). Ecology — Growing in evergreen forest, 2000 – 4000 m altitude. Other collections examined. CHINA, Yu 22301 (para PE PE 00078824 *), Mekong-Salwin Divide, Sila, alt. 4000 m, 11 Aug. 1938. – MYANMAR, Kachin State, Kingdon­Ward 7164 (K), Valley of Di Chu, alt. 7000 ft, 22 July 1926. Note — Impatiens margaritifera var. humilis is similar to var. margaritifera, but differs in having a shorter stem, a shorter rachis and fewer flowers in each inflorescence. It is also similar to I. tenerrima Y. L. Chen (1978: 51) but differs in having a 2 – 6 - flowered raceme (vs a solitary flower), lateral united petals of c. 15 mm long (vs 25 – 30 mm), a taller stem and longer leaves.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFC8FFA4FCF6FAB8B86B0344.taxon	description	Impatiens microsciadia Hook. f. (1905) 16. — Type: Pantling s. n. (lecto, designated here K with illustration by Hooker), Sikkim, alt. 6000 ft Terrestrial, annual herb, 30 – 90 cm tall. Stem erect, 2.5 – 6 mm diam, simple to richly branched, glabrous, with some globular glands on the ridge. Leaves spirally arranged. Petiole 5 – 15 mm long, glabrous. Lamina 55 – 120 by (15 –) 32 – 40 mm wide, elliptic to ovate to lanceolate, apex acuminate to acute, base cuneate to attenuate, margin crenate, papyraceous, adaxial green, abaxial pale green, glabrous, with a pair of globular glands at the petiole base; lateral veins 7 – 10 (– 12) pairs. Inflorescence axillary, erect, 7 – 13 (– 19) - flowered raceme. Peduncle (20 –) 40 – 50 (– 90) mm long, glabrous. Rachis (20 –) 30 – 40 (– 60) mm long. Flowers 7 – 11 mm long, 10 – 21 mm deep, yellow with red dots at lateral petals base. Bracts 1 – 2 (– 4) by 1 mm, ovate to lanceolate, apex mucronate to aristate, base cuneate, margin entire, glabrous, persistent. Pedicel 10 – 16 mm long, glabrous. Lateral sepals 2, 1.5 – 2 by 1.5 – 2 mm, free, ovate to obliquely ovate, apex mucronate to aristate, 2 mm long, base obtuse, green, glabrous. Lower sepal 3 – 7 mm long, 1.5 – 3 mm deep, navicular, apex mucronate to aristate, 2 mm long, glabrous, distal part gradually narrowing into a recurved to straight spur, 11 – 17 mm long, yellow. Dorsal petal 3.5 – 5 mm long, obovate, apex obtuse, base obtuse, glabrous, abaxial midvein simple or with narrowly crescent-shaped crest. Lateral united petals free: the upper petals 2 – 5 by 1.5 – 3 mm, ovate to orbicular, apex obtuse, base cuneate, yellow with red dots at the base; the lower petals free, 6 – 14 by 4 – 7 mm ovate, apex obtuse, base without auricle, yellow with red dots at the base. Stamens: filament green to yellow; anther yellow to white. Ovary green, glabrous. Fruits 12 – 17 mm long, 2 – 2.5 mm diam, linear, 5 - lobed, glabrous. Seeds 2 mm long, obovoid, compressed. Phenology — Flowering: July to November; fruiting: September to December. Distribution — Bhutan, China (Tibet and Yunnan Province), India (Sikkim and Uttarakhand State), Myanmar (Chin, Kachin, Mandalay, Shan), Nepal (Dhaulagiri Zone, Dhawalagiri Zone, Gandaki Zone, Janakpur Zone, Koshi Zone, Mechi Zone, Sa- garmatha Zone), northern Thailand. Ecology — Growing in open or shady areas in deciduous to evergreen forest, 1700 – 2300 m altitude. Other collections examined. MYANMAR, Chin State, Huk s. n. (K H 2015 / 00092 39), Chin Hills, July 1892; Venning 132 (K sheet 1, 2, 3), Chin Hills, Sihaung road, 2 miles from Haka, alt. 7500 ft, 11 Oct. 1910; Murata et al. 024574 (QBG 024574), Natma Taung National Park, at the foot of Mt Victoria, alt. 1800 – 2000 m, 2 Dec. 2002; Ling Shein Man 055282 (QBG QBG 78499), Natma Taung National Park, 2 Aug. 2007; Ling Shein Man 087645 (QBG QBG 61278), Old Town area, Kanpetlet Township, alt. c. 1750 m, 23 Oct. 2011; Fujikawa et al. 090548 (QBG QBG 70760), N 21 ° 12 ' 10.5 " E 94 ° 01 ' 47.1 ", alt. 1945 m, 4 Dec. 2012; Fujikawa et al. 094011 (QBG), N 21 ° 12 ' 22.3 " E 94 ° 01 ' 26.5 ", alt. 2075 m, 20 Aug. 2013; Funakoshi et al. 085068 (QBG QBG 61268), N 21 ° 12.162 ' E 94 ° 01.447 ', alt. 1955 m, 3 Sept. 2011; Mandalay Region, Lace 6008 (E E 00752884, K H 2015 / 00092 38), Ruby mine district, Mogok & Bernarmyo, 25 Oct. 1912; Shan State, Ruchisansakun et al. 732 (L L 2071119, MAND, RAF, RANG), Taunggyi district, Pindaya, N 20 ° 58 ' 49.53 " E 96 ° 37 ' 41.62 ", alt. 1909 m, 26 Sept. 2015. Notes — The spur length of flowers of I. racemosa varies from absent to 17 mm. Spurred and spurless flowers can be found on the same plant (Chiang Mai population, Thailand). Therefore, we do not to recognise I. racemosa var. ecalcarata as a distinct taxon. De Candolle (1824) only mentioned that I. racemosa was collected in Napaulia by Wallich but did not specify the specimens. We designate the specimen GDC 00218030 as the lectotype because it is a complete specimen and is deposited in the De Candolle Herbarium and matches the protologue. Hooker (1904 b) did not clearly designate the holotype of I. racemosa var. ecalcarata. We select the specimen Prain 39 I (K 000694752) as the lectotype because Hooker made illustrations and wrote I. racemosa var. ecalcarata on the sheet. Hooker (1905) mentioned only the locality and altitude for I. microsciadia but did not provide other information for the type. We found two sheets of this species from Sikkim, 6 000 ft altitude, Pantling s. n. (one with illustration and another one without illustration), annotated by Hooker. We select Pantling s. n. (K, with illustration) as the lectotype.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFC6FFA4FFAFFD91BEA10565.taxon	description	Map 8 Distribution of Impatiens racemosa DC. (●), I. siculifer var. siculifer Hook. f. (●), I. siculifer var. porphyrea Hook. f. (●) and I. austroyunnanensis S. H. Huang (●). linear-falcate to obliquely ovate, apex acute to acuminate and mucronate, base cuneate, yellow, glabrous. Lower sepal 7.5 – 10 mm long, 18 – 25 mm deep including spur, deeply navicular, apex acuminate to aristate with long awns, up to 5 mm, yellow with green awns, glabrous, distal part gradually narrowing into an upcurved spur, red. Dorsal petal 8 – 9 by 7 – 10 mm, elliptic to broadly lanceolate, flat, strongly reflexed backward, apex obtuse to round, base obtuse to truncate, green, glabrous, abaxial midvein simple or with a narrow crest, c. 1 mm high. Lateral united petals 18.5 – 21 mm long, free, slightly different in size and shape between both sides: the upper petals; the left one 9 – 10 by 5 mm, triangular to broadly lanceolate to obovate, apex acute to round, base cuneate, yellow; the right one 8 – 11 by 5 mm, obliquely triangular to broadly lanceolate to elliptic, apex acute to obtuse, base cuneate; the lower petals free; the left one 12 – 15 by 1 – 1.5 mm, linear and spiral, apex acute, base without to slightly auricled, c. 1 mm high, yellow, glabrous; the right one 13 – 13.5 by 1 – 2 mm, linear and spiral, apex acute to obtuse, base slightly spiral, c. 1 mm high, yellow, glabrous. Stamens: filaments c. 4 mm long; anthers yellow. Ovary 3 – 4 mm long, c. 1 mm diam, green, glabrous. Fruits 19 – 25 mm long, 2 – 3 mm diam, linear, 5 - lobed, glabrous: fruiting pedicel up to 20 mm long, straight. Seeds unknown. Note — Impatiens siculifer is very similar to I. stenantha Hook. f. (1875: 478) but the floral bract of I. stenantha drops before the flower expands. In the Flora of China (Chen et al. 2007), differences in the shape of the lateral sepals and lower sepal apex are mentioned, but those characters are somewhat confusing. Nevertheless, a more detailed study is necessary to delineate I. stenantha and I. siculifer.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFC4FFA6FFAFFE2BBBE60487.taxon	description	Impatiens siculifer var. porphyrea Hook. f. (1908) 247; Y. L. Chen et al. (2007) 68. — Type: Henry 11206 (holo K K 000694768), China, Yunnan.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFC4FFA6FFAFFE2BBBE60487.taxon	description	Phenology — Flowering: August to October; fruiting: August to October. Distribution — Myanmar (Kachin State), China (Yunnan Province). Ecology — Unknown. Other collection examined. MYANMAR, Kachin State, Kingdon­Ward 21465 (BM), the north triangle, Tama Bum, alt. 9500 ft, 13 Oct. 1953. Note — Impatiens siculifer var. porphyrea can be easily distinguished from its close relatives by its deep purple flower. Hooker (1908) clearly designated Henry 11206 (K) as type for I. siculifer var. porphyrea and we found only a single specimen. The name I. stenantha var. porphyrea Hook. f. was annotated on some sheets of this taxa.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFC4FFA7FFAFFA57BA93066C.taxon	description	Impatiens austroyunnanensis S. H. Huang in Huang et al. (2003) 262,276. — Type: Shui Yu­Min 003306 (holo YUKU not seen), China, Yunnan Province, Wemshan, Laojunshan, alt. 2450 m, 5 Aug. 1993; Wu et al. 3065 (para KUN KUN 0772011 *), Wu et al. 3438 (para KUN KUN 0772012 *), Wu et al. 3753 (para KUN KUN 0772011 *), China, Yunnan Province, Jinping, Maandi, Wutaishan, alt. 2400 – 2700 m, 10 Sept. 1996. Terrestrial, perennial herb, with procumbent rhizome, 15 – 20 cm tall. Stem erect to decumbent, up to 4 mm diam, moderately branched, green to purple, glabrous. Leaves decussate or spirally arranged. Petiole absent – 5 mm long, c. 1 mm diam, glabrous. Lamina c. 43 by 13 mm, elliptic to obovate, apex acute, base obtuse, margin slightly serrate, adaxial green, abaxial pale green, glabrous, with one pair of glands on lamina base; lateral veins 3 or 4 pairs. Inflorescence axillary to subterminal, erect, 2 – 4 - flowered raceme. Peduncle 7 mm long, <1 mm diam, green with purple dots, glabrous. Rachis 5 mm long, green, glabrous. Flowers 20 – 25 mm long, 15 – 20 mm deep, asymmetric, yellow to purple. Bracts c. 5 by 2 mm, lanceolate, apex acute and mucronate, base cuneate, margin entire, without glands, pale green, glabrous, persistent. Pedicel 20 mm long, <1 mm, pale green to purplish green, glabrous. Lateral sepals 2, 3 by 1.5 mm, free, obliquely lanceolate, apex acute and mucronate, base obtuse, glabrous. Lower sepal 7 mm long, 17 mm deep including spur, deeply bucciniform, protruding upward, apex acute and mucronate, pale pink, glabrous, distal part elongate as spur, dilated at middle. Dorsal petal c. 7 by 7 mm, broadly ovate, flat, apex acuminate and mucronate, base round, pale pink, glabrous, abaxial midvein simple. Lateral united petals 24 – 28 mm long, free, slightly different in shape between both sides, the left one slightly longer than the right one: the left upper petal c. 5 by 3 mm, broadly ovate to triangular, apex acute, base cuneate, purple to yellow; the right upper petal c. 6 by 2 – 3 mm, broadly ovate to triangular, apex acute, base cuneate; the lower petals free; the left lower petal c. 24 by 2 mm, narrowly oblong, apex acute to obtuse, base distinctly yellow auricled, purple, glabrous; the right lower petal shorter, c. 19 by 3 mm, narrowly oblong, apex acute to obtuse, base yellow with a distinct auricle. Stamens c. 4 mm long. Ovary 3 mm long, 1 mm diam, green, glabrous. Fruits linear, green, glabrous. Seeds unknown. Phenology — Flowering: September to October; fruiting: September to November. Distribution — Myanmar (Kachin State), China (Yunnan). Ecology — Growing in shady areas in evergreen forest, 2400 – 2800 m altitude. Other collections examined. MYANMAR, Kachin State, Kingdon­Ward 7443 (K), Valley of the Senghku, N 28 ° 05 ' E 97 ° 30 ', 8000 – 9000 ft, 21 Sept. 1926; Kingdon­Ward 7459 (K), ibid., 25 Sept. 1926; Saw­Lwin KSL 1065 (L), Hkakabo Razi National Park, 23 Oct. 2015. Notes — Impatiens austroyunnanensis was previously only poorly known. Some specimens in PE and KUN were identified as I. microcentra. However, they are very different from the description in the protologue (Handel-Mazzetti 1933: 653) and the holotype of I. microcentra, Handel­Mazzetti 9244 (WU 0059594), in having a shorter stem, longer peduncle, deeply bucciniform lower sepal (instead of cylindrical lower sepal), c. 17 mm deep lower sepal including spur (instead of a 5 mm deep sepal), narrowly oblong lower lateral petals (instead of ovate to obovate lateral petals) (Table 3). This confusion is possibly due to the fact that Chen in 1973 annotated Yu 20313 (PE 00039564, PE 00039565) as a ‘ topotype’; mentioning this on the specimen sheets; subsequently this led to the use of the wrong illustration in later publications (Akiyama et al. 1995: 158, Wu 2006: 80, 127, Chen et al. 2007: 50, 71). The index Florae Yunnanensis and Vascular Plants of the Hengduan Mountains refer to the type Fig. 13 Impatiens austroyunnanensis S. H. Huang flower; c. lateral view of flowers; d. lateral sepals petal; g. lateral united petals. — Drawn by Saroj specimens only, so there is no mistake in that publication (Wu 1984: 303). In Flora of China (Chen et al. 2007), I. austroyunnanensis was not treated because the authors did not see any herbarium specimens. Impatiens austroyunnanensis is most similar to I. holocentra but differs in having a deeply bucciniform spur that dilates in the middle.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFC5FFA0FFAFF8FEBECB0075.taxon	description	Phenology — Flowering: July to September; fruiting: August to September. Distribution — Myanmar (Kachin State), Bhutan (Miongar District), India (Sikkim State), Nepal (Sankhuwasabha District). Ecology — Growing on wet rocks in shady areas in evergreen forest, 2500 – 3400 m altitude. Despite its relatively wide distribution, this species is rare in Myanmar. Other collections examined. MYANMAR, Kachin State, Kingdon­Ward 12976 (BM, K), Mungku Hkyet, N 27 ° 45 ' E 97 ° 50 ', alt. 8000 – 9000 ft (2440 – 2740 m), 19 Aug. 1937. Note — Impatiens prainii is closely related to I. holocentra but differs in having narrower leaves.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFC2FFA1FCF6FEC0B85A05BD.taxon	description	Impatiens bracteolata Hook. f. (1905) 31; Fedde (1905) 433. — Type: Hooker & Thomson s. n. (lecto, designated here K K 000694724), Bangladesh, Khasia Hills, alt. 5000 ft Terrestrial, annual herb, up to 30 cm tall. Stem erect, slender, simple to moderately branched, glabrous. Leaves spirally arranged. Petiole absent – 20 mm long, glabrous. Lamina 80 – 210 by 35 – 90 mm, ovate to elliptic, apex acuminate, base cuneate to attenuate, margin serrate to crenate with teeth, glabrous, with Fig. 14 Impatiens prainii Hook. f. a. Habit; b. lateral view of flowers; c. pedicels and ovaries; d, e. lateral sepals; f, g. lower sepals; h – j. dorsal petal; k, l. lateral united petals. — Drawn by Saroj Ruchisansakun. 1 or 2 pair (s) of glands near leaf base; lateral veins 6 – 8 pairs. Inflorescence axillary to subterminal, 8 – 9 (– 16) - flowered raceme. Peduncle 60 – 80 mm long, glabrous. Rachis 15 – 55 mm long. Flowers 15 – 20 mm long, 15 – 27 mm deep, asymmetric, yellow. Bracts c. 2 – 4 by 1 mm, lanceolate to elliptic, apex acute to acuminate, base cuneate, margin entire, glabrous, persistent. Pedicel 12 – 18 mm long, glabrous. Lateral sepals 2, 3 – 3.5 by 1 – 2 mm, free, obliquely broadly lanceolate to obliquely ovate, apex acute to acuminate and aristate, base oblique, glabrous. Lower sepal 6 – 9 mm long, 18 – 23 mm deep including spur, deeply navicular, apex acute and mucronate, tapering into a straight or upcurved spur, 16 mm long. Dorsal petal 6 mm long, elliptic, apex mucronate, base obtuse, abaxial midvein simple or with a narrow crest. Lateral united petals c. 20 mm long, free. Stamens: filaments c. 3.5 mm long. Ovary c. 3.5 mm long, glabrous. Fruits linear, glabrous. Seeds unknown. Phenology — Unknown. Distribution — Myanmar (Kachin State), Bangladesh. Ecology — 1500 – 1600 m altitude. Other collections examined. MYANMAR, Kachin State, Toppin 2678 (K H 2015 / 00092 112, 113, 114, 115, 116, 117; SING 0150195; SING 0150196; SING 0150197), near Sinlum; Armstrong et al. 1337 (NY 2649163 *), Putao district, Naungmung Township, Hkakabo Razi National Park, between Shin- gsankhu rest house and Golle village, 27.6529 ° 97.8943 °, alt. 891 m, 9 Nov. 2015. Notes — Impatiens bracteolata is very similar to I. angustiflora but differs in having ovate or elliptic leaves (never lanceolate). It is also similar to I. siculifer but does not have a strongly upcurved spur, and the lower sepal does not have a long-awned apex. Hooker did not clearly designate a type specimen of I. bracteolata. We found two sheets of Hooker & Thomson s. n., K 000694724 and K 000694725, in the Kew Herbarium, which were annotated as Impatiens bracteolata. The specimen K 000694724 exactly matches the protologue (Hooker 1905), so we select it as lectotype. This species used to be part of Impatiens angustiflora Hook. f. (1875) 481.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFC3FFA1FFAFFA88BF420485.taxon	description	Impatiens citrina Hook. f. (1905) 17, 22. — Type: Griffith 1235 (lecto, designated here K K 000694584), India, Arunachal Pradesh, Mishmi Hills. Map 9 Distribution of Impatiens prainii Hook. f. (●), I. bracteolata Hook. f. (●), I. citrina Hook. f. (●) and I. drepanophora Hook. f. (●). Terrestrial, annual herb, up to 50 cm tall. Stem erect, simple to laxly branched, glabrous. Leaves spirally arranged. Petiole 7 – 15 mm long, glabrous. Lamina 350 – 400 by 80 – 85 mm, ovate to elliptic, apex acute to acuminate, base obtuse to cuneate, margin crenate, adaxial green, abaxial pale green, glabrous, without stipular glands; lateral veins 7 or 8 pairs. Inflorescence axillary to subterminal, erect, 10 – 15 - flowered raceme. Peduncle 70 – 75 mm long, green, glabrous. Rachis 55 – 80 mm long. Flowers c. 25 mm long, c. 50 mm deep, asymmetric, yellow. Bracts ovate, caducous. Pedicel 18 – 20 mm long, slender, glabrous. Lateral sepals 2, c. 5 by 4 mm, free, obliquely elliptic to ovate, apex acute to obtuse and mucronate, base obtuse, green, glabrous. Lower sepal 8 – 10 mm long, 18 – 20 mm deep, deeply navicular, apex acuminate and aristate with long awn, yellow, glabrous, constricted into an upcurved spur, sometimes involute, 5 – 15 mm long, minutely bifid. Dorsal petal 9 – 17 by 5 mm, ovate to orbicular, flat, strongly reflexed backward, apex obtuse to round, base cuneate to obtuse, abaxial midvein simple or with a narrow crest, glabrous. Lateral united petals free, asymmetric: the left upper petal 8 – 10 by 3 – 4 mm, curved spatulate, apex acute, base stipitate; the right upper petal c. 9 by 5 mm, obovate to elliptic, apex acuminate, base obtuse, margin entire; the lower petals free; the left lower petal 14 – 22 by 2 – 5 mm, oblong to dolabriform, apex obtuse, glabrous; the right lower petal c. 15 by 3 mm, lanceolate, apex acute. Stamens: filaments c. 4 mm long. Ovary glabrous. Fruits 9 – 13 mm long, 1 – 2 mm diam, linear, glabrous. Phenology — Flowering: September to November; fruiting: September to November. Distribution — Myanmar (Kachin State), India (Arunachal Pradesh State). Ecology — Growing in gullies near streams, 1100 – 1200 m altitude. Other collections examined. MYANMAR, Kachin State, Armstrong et al. 1326 (NY NY 02649175 *), Putao District, Naungmung Township, N 27 ° 40 ' 51.3 " E 97 ° 53 ' 59.3 ", alt. 1182 m, 6 Nov. 2015. Notes — Impatiens citrina differs from I. pseudocitrina Hareesh (Hareesh et al. 2017: 231) in having a 10 – 15 - flowered inflorescence vs 2 - or 3 - flowered inflorescences, and in lacking stipular glands. Hooker (1905) did not designate a type specimen of this species in the protologue. We select the specimen Griffith 1235 (K 000694584) as lectotype because it is the only specimen written as I. citrina with an illustration by Hooker.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFC3FFA2FCF6FA51BB1204E2.taxon	description	Phenology — Flowering: July to November; fruiting: September to November. Distribution — Myanmar (Kachin State), China (Tibet Region, Yunnan Province), India (Khasia Hills). Ecology — Growing in open, grassy areas in evergreen forest, 1100 – 2200 m altitude. Other collections examined. CHINA, Yunnan Province, Wu et al. 2451 (PE PE 01878257 *), Hydrologic Station, 23 Oct. 1995; Tibet Region, Unknown 1698 (PE PE 00061865 *), Medog County, 10 Aug. 1974. – MYANMAR, Kachin State, Toppin 2778 (K H 2015 / 00092 7, H 2015 / 00092 8, H 2015 / 00092 9, BM), NE Burmah, alt. 5000 – 7000 ft (1524 – 2134 m); Buchanan 5568 (E E 00753037, E E 00753038, K H 2015 / 00092 10), Myitkyina, Sima Hills, east of Irrawaddy, 3500 – 4000 ft (1067 – 1219 m), 1 Nov. 1911; Kaulback 327 (BM), Myitkyina, N 26 ° 06 ' E 97 ° 58 ', alt. 4500 ft, 9 Aug. 1939; Ruchisansakun & Thet Yu Nwe 753 (L L 2071175, MAND, RAF), Myitkyina, Sa Daung village, along the road side, N 25 ° 25 ' 40.8 " E 97 ° 56 ' 32.3 ", alt. 1452 m, 18 Nov. 2015; Kaulback s. n. (BM), Nam Taqmai Valley, N 27 ° 42 ' E 97 ° 54 ', alt. 4000 ft (1219 m), 14 Aug. 1938. Notes — Impatiens drepanophora differs from I. stenantha by having a narrowly clavate fruit vs a linear fruit, a slightly upcurved spur vs a strongly re-upcurved spur, and a broadly ovate-falcate, long aristate spur vs a linear-falcate spur with an acute to obtuse apex. Hooker did not clearly designate a type specimen of I. drepanophora. We select Hooker & Thomson 56 (K 000694682) as lectotype because it was collected by Hooker and includes an illustration. During our expedition, we observed that this species was visited and pollinated by bees.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFC0FFA2FFAFFA73B9BE02DA.taxon	description	Impatiens holocentra Hand. - Mazz. (1933) 647; Y. L. Chen et al. (2007) 54. — Type: Handel­Mazzetti 9405 (holo WU 0059598 *), China, Yunnan Province, in a valley near boarder of Tibet-Myanmar, N 27 ° 53 ', alt. 1725 – 2150 m, 6 July 1916. Terrestrial, perennial herb, 50 cm tall, with tuberous root. Stem erect, 2 – 5 mm diam, moderately branched, terete, green to purplish green, glabrous. Leaves spirally arranged. Petiole 4 – 6 mm long, 1.5 – 2 mm diam, angular, glabrous. Lamina 70 – 125 by 35 – 40 mm, ovate, apex acuminate, base cuneate, margin serrate, papyraceous, adaxial dark green, abaxial glaucous, glabrous, with one pair of red, clavate glands at petiole base; lateral veins 6 – 9 pairs. Inflorescence axillary, erect, 2 – 4 - flowered raceme. Peduncle 13 – 20 mm long, <1 mm diam, green, glabrous. Rachis 2 – 17 mm long, <1 mm diam. Flowers 25 – 30 mm long, 17 mm deep, asymmetric, yellow. Bracts c. 2 by <1 mm, linear, apex acute, base cuneate, margin entire, without glands, red to brown, glabrous, persistent to caducous. Pedicel 10 – 15 mm long, <1 mm diam, green, glabrous. Lateral sepals 2, c. 2 by 1.5 mm, free, ovate, apex acute and mucronate, base obtuse, green to yellow. Lower sepal c. 10 by 5 mm, 15 mm deep including spur, infundibular, apex short aristate, c. 1 mm, yellow, glabrous, dorsal part gradually narrow into a straight spur, yellow. Dorsal petal c. 10 by 8 mm, c. 4 mm deep, ovate, cucullate, apex round to obtuse, base truncate to cordate, yellow, glabrous, abaxial midvein with a narrowly crescent-shaped crest, c. 3 mm wide crest. Lateral united petals 23 – 25 mm long, free: the upper petals c. 9 by 3 – 4 mm, elliptic, apex acute, base cuneate, yellow with red steaks, the right one reflected at the base; the lower petals 17 – 20 by 2 – 2.5 mm, free, linear, apex acute to obtuse, base without auricle, yellow, glabrous. Stamens: filament unknown. Ovary 5 - carpellate, green, glabrous. Fruits c. 27 mm long, c. 3 mm diam, linear, 5 - lobed, glabrous. Seeds unknown. Phenology — Flowering: July to November. Distribution — Myanmar (Kachin State), China (Yunnan). Ecology — Growing in moist and shady areas in evergreen forest, 1700 – 2200 m altitude. Other collections examined. MYANMAR, Kachin State, Ruchisansakun & Thet Yu Nwe 755 (L L 2071185, MAND, RAF), Myitkyina, Kan Paik Ti, N 25 ° 24 ' 08.6 " E 98 ° 06 ' 56.4 ", alt. 1998 m, 18 Nov. 2015; Kingdon­Ward 21084 (BM), Tama Bum, alt. 9500 ft, 26 June 1953. Note — Impatiens holocentra can be easily distinguished from the other species in the sect. Racemosae in Myanmar by its deeply bucciniform lower sepal. Handel-Mazzetti (1933) clearly designated that the type is Handel­Mazzetti 9405 deposited in WU.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFC0FFA3FCF6FC68BAAF04FF.taxon	description	Map 10 Distribution of Impatiens holocentra Hand. - Mazz. (●), I. kachinensis Hook. f. ex Toppin (●), I. sarissiformis C. E. C. Fisch. (●) and I. chimiliensis H. F. Comber (●). obtuse, margin entire, glabrous, caducous. Pedicel 13 – 20 mm long, glabrous. Lateral sepals 2, 4 – 4.5 by 2 – 2.5 mm, free, obliquely ovate, apex acute and mucronate, base cuneate to obtuse, glabrous. Lower sepal 7.5 – 10 by 4 – 7 mm, 10 – 15 mm deep, navicular, apex acute and mucronate, glabrous, dorsal part tapering into a straight to upcurved spur, 17 – 25 mm long. Dorsal petal c. 10 by 8 mm, obovate, flat, strongly reflexed backward, apex round, base cuneate, abaxial midvein simple. Lateral united petals 22 – 26 mm long, free, different in size and shape: the left upper petal c. 13 by 6 mm, broadly obovate, apex obtuse, base cuneate; the right upper petal c. 10 by 2 – 3 mm, oblong: the lower petals free; the left lower petal c. 14 by 4 mm, narrowly ovate, apex acute, base without auricle, glabrous; the right lower petal c. 20 by 2 mm, narrowly oblong to linear, apex acute. Stamens: filaments 3 – 4 mm long. Ovary 4 mm long, 1 mm diam, glabrous. Fruits linear, the seeds being in the upper portion only. Seeds 7 – 17. Phenology — Flowering: September to March; fruiting: October to November. Distribution — Endemic to Myanmar (Kachin State). Ecology — Growing along the stream, in evergreen forest, 350 – 1000 m altitude. Other collections examined. MYANMAR, Kachin State, Mokim s. n. (K 000694657), upper Burma, Kachin Hills, Mar. 1898; Toppin 4286 (K H 2015 / 00092 145, K H 2015 / 00092 146), Kachin Hills, Sumprang 1250 ’, Ban Kan 1400 ’, Kumtat 1450 ’, alt. 1250 – 1450 ft (381 – 442 m); Jin et al. PT­ ET 1027 (PE PE 2472783 *, PE PE 2472784 *), Putao, Hkamdaukmyit Camp, N 27 ° 36 ' 48.91 " E 96 ° 48 ' 55.30 ", alt. 2457 m, 21 Oct. 2014; Jin et al. PT­ET 1403 (PE PE 2472650 *, PE PE 2472651 *, PE PE 2472652 *, PE PE 2472653 *, PE PE 2472654 *), Putao, Makohwa, 27 Oct. 2014; Jin et al. PT­ET 87 (PE PE 2472757 *, PE PE 2472758 *, PE PE 2472759 *, PE PE 2472760 *, PE PE 2472761 *, PE PE 2472762 *), Putao, Upper Shankaung, N 27 ° 25 ' 52 " E 97 ° 17 ' 50 ", alt. 450 m, 12 Oct. 2014. Notes — Impatiens kachinensis is similar to I. drepanophora and I. sarissiformis, but differs in having narrowly elliptic lamina vs ovate (I. drepanophora) or linear-oblong (I. sarissiformis) lamina. We found two sheets of Mokim s. n. annotated as I. kachinensis and select K 000694658 because it has a complete dissected flower and good flower illustration. Toppin (1920) recorded that I. kachinensis is visited by butterflies and bees, similar to I. racemosa (Ruchisansakun et al. 2016), I. drepanophora and I. longiloba Craib (Ruchisansakun, pers. obs).	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFC1FFA3FCF6FC91BF3E0912.taxon	description	Phenology — Flowering: July to October; fruiting: July to October. Distribution — Myanmar (Kachin State), China (Tibet Province, Yunnan Province). Ecology — Shaded and humid places at thicket margins and streamsides, c. 3200 m altitude. Other collection examined. MYANMAR, Kachin State, Forrest 27237 (para BM), western frank of the Chimili, N’Maikha-Salwin divide, N 26 ° 25 ' E 98 ° 48 ', alt. 12000 – 13000 ft, Sept. 1925. Note — Impatiens chimiliensis is most similar to I. duclouxii but differs in having a longer peduncle, a longer rachis, broader lamina and a straight spur. Comber (1934) clearly designated G. Forrest 24931 deposited in E as type specimen.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFC1FFA3FFAFFA4FBFFC0244.taxon	description	Impatiens sarissiformis C. E. C. Fisch. (1926) 467; W. J. Kress et al. (2003) 170. — Type: Parkinson 373 (holo K K 000694743), Myanmar, Kachin State, Myitkyina District, 6 Dec. 1925. Terrestrial, annual herb, 30 – 34 cm tall. Stem lower portion decumbent, upper portion erect, up to 9 mm diam, simple to moderately branched on decumbent part, angular with short wings, green to purple, glabrous. Leaves spirally arranged. Petiole absent – 15 mm long, 1 – 2 mm diam, flat, glabrous. Lamina 50 – 90 by 3 – 13 mm, linear-oblong, apex acute, base cuneate, margin serrate, coriaceous, adaxial dark green, abaxial pale green, glabrous, with one pair of red clavate glands at petiole base; lateral veins 4 – 6 pairs. Inflorescence axillary to subterminal, erect, (2 –) 6 – 20 - flowered raceme. Peduncle 22 – 40 mm long, c. 1 mm diam, angular, green, glabrous. Rachis 2 – 60 mm long, c. 1 mm diam. Flowers 15 – 20 mm long, asymmetric, deep yellow. Bracts c. 2 by <1 mm, elliptic to linear, apex acute, base obtuse to cuneate, margin entire, without glands, green, glabrous, caducous. Pedicel 10 – 14 mm long, c. 1 mm diam, green, glabrous. Lateral sepals 2, 2 – 5 by 1 – 2 mm, free, ovate, apex acuminate, base obtuse, glabrous. Lower sepal c. 8 mm long, c. 9 mm deep, deeply navicular, apex acute and mucronate, glabrous, distal part gradually tapering into a straight spur, 15 – 17 mm long. Dorsal petal unknown. Lateral united petals 19 mm long, free: the upper petals c. 10 by 3 mm, oblong, apex obtuse, base cuneate, yellow; the lower petals c. 12 by 2 mm, free, narrowly oblong. Stamens unknown. Ovary unknown. Fruits unknown. Seeds unknown. Phenology — Flowering: September to December. Distribution — Endemic to Myanmar (Kachin State), only known from the Myitkyina district. Ecology — Growing near water or in stream beds. Other collection examined. MYANMAR, Kachin State, Waung Po Khout Tonerflew 1868 (K H 2015 / 00092 48), Myitkyina District, Pidaung chang, 5 Sept. 1926. Note — Impatiens sarissiformis is very similar to I. kachinensis but differs in having linear-oblong leaf lamina vs narrowly elliptic leaf lamina. The specimens of this species have incom- plete flowers. More specimens are needed to complete the description of this species. Fischer (1926) clearly designated C. E. Parkinson 373 deposited in K as the type specimen.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFFEFF9CFFAFFA71BECA02F8.taxon	description	Phenology — Flowering: September to October; fruiting: October to November. Distribution — Myanmar (Kachin State), China (Yunnan). Ecology — Understories of mixed forests, along canals, moist places, 2100 – 2800 m altitude. Other collections examined. CHINA, Henry 9762 (syn K K 000199723), Ducloux 432 (syn K K 000199724), Yunnan. – MYANMAR, Forrest 1006 (syn K K 000694595, E E 00313652), upper Burma and N. W. Yunnan, the Ming- Kwong-Irrawadi divide, lat. N 26 °, alt. 7000 – 8000 ft, Oct. 1905. Note — Impatiens clavicuspis is similar to I. ceratophora but differs in having long-awned apices on bracts and lateral sepals vs acute to acuminate apices.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFFEFF9CFFAFFF01BBAC04E6.taxon	description	Phenology — Flowering: August to September; fruiting: September. Distribution — Endemic to Myanmar (Kachin State). Ecology — Montane forest, in damp shady places along streamsides, 1700 – 1800 m altitude. Note — The specimens of I. sinlumiensis were previously identified as I. cymbifera by Toppin, but Grey-Wilson (1989 c) noticed that they constitute a different species and described it as a new species, I. sinlumiensis.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFFEFF9DFCF6FC75B88702ED.taxon	description	Map 11 Distribution of Impatiens sinlumiensis Grey-Wilson (●), I. clavicuspis Hook. f. ex W. W. Sm. (●) and I. ceratophora H. F. Comber (●). Pedicel 10 – 20 mm long. Lateral sepals 2, obliquely orbicular, curved, apex acuminate or aristate. Lower sepal bucciniform, apex long cuspidate or aristate, distal part rapidly constricted into an incurved or involute, clavate spur. Dorsal petal orbicular, cucullate, abaxial midvein with narrow crest. Lateral united petals c. 25 mm, free: the upper petals, broadly ovate; the lower petals obliquely elliptic, apex acuminate. Stamens: filaments c. 5 mm long; anthers obtuse. Ovary glabrous. Fruits linear, c. 25 mm. Seeds unknown. Phenology — Flowering: August to September; fruiting: August to September. Distribution — Myanmar (Kachin State), China (Yunnan Province). Ecology — Understory of mixed forests, along canals, moist places, 1700 – 2700 m altitude. Other collections examined. CHINA, Forrest 9004 (para E E 00120035), western flank of the Shweli-Salwin divide, lat. N 25 ° 20 ', alt. 8000 – 9000 ft (2440 – 2740 m), Aug. 1912. – MYANMAR, Kachin State, Kingdon­Ward 7471 (K), valley of the Seingkhu, N 28 ° 8 ' E 97 ° 25 ', alt. 9000 – 10000 ft, 26 Sept. 1926. Note — Impatiens ceratophora is similar to I. clavicuspis but differs in having acute to acuminate bract apices vs long-awned apices. Section Fasciculatae S. X. Yu & Wei Wang in Yu et al. (2015) 13	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFFFFF9EFFAFFC62B8870366.taxon	description	Impatiens gagei Hook. f. (1911 d) t. 2951. — Type: Burkill 27744 (lecto, designated here K K 000694617), India, Tonglo slopes, below Simana, alt. 6000 – 8000 ft. Terrestrial, perennial, glabrous herb, 50 – 150 cm tall, with fascicled roots. Stem 3 – 6 mm diam, erect, the lower portion rarely decumbent, angular, moderately branched, green to purple, glabrous. Leaves spirally arranged. Petiole 15 – 30 mm long, 2 – 3 mm diam, angular, pale green to pale pink, glabrous. Lamina 70 – 140 by 43 – 65 mm, ovate to elliptic, apex acuminate, base attenuate, margin distinctly serrate, adaxially dark green, abaxially greyish green, glabrous, with one pair of globose glands at lamina base or on leaf margin near lamina base; lateral veins 12 or 13 pairs. Inflorescence axillary, erect, 2 - flowered racemes. Peduncle up to 4 mm long, c. 2 mm diam, angular, purple, glabrous. Rachis c. 2 mm long, c. 1.5 mm diam. Flowers 27 – 34 by 23 – 25 mm, c. 45 mm deep, slightly asymmetric, lilac. Pedicel 28 – 31 mm long, c. 1 mm diam, pinkish green, glabrous. Bracts 9 – 10 by c. 1 mm, linear to lanceolate, apex acute, base cuneate, margin entire, without glands, green, glabrous, persistent. Lateral sepals 4: the upper pair 6 – 7 by 1 – 1.5 mm, free, linear to narrowly ovate, apex acute and mucronate, base cuneate, pale green to deep pink, glabrous; the lower pair 10 – 11 by 3 – 5 mm, broadly obliquely lanceolate, apex acuminate, base obtuse, pale green to deep pink, glabrous. Lower sepal 18 – 21 by 7 – 10 mm, 16 – 25 mm deep, deeply bucciniform, apex acuminate and mucronate, lilac, distal part abruptly constricted into a strongly incurved spur, 17 – 20 mm long, pale green with purple dots. Dorsal petal 13 – 26 by 16 – 21 mm, ovate to broadly elliptic to orbicular to broadly obovate, cucullate to flat, apex acuminate or emarginate and mucronate, curved, base truncate to cordate, lilac, often spotted, glabrous, abaxial midvein with crescent-shaped to obtuse crest, pale to dark pink. Lateral united petals 28 – 32 mm long, free: the upper petals 17 – 20 by 6 – 10 mm, ovate to broadly oblong, apex emarginate and mucronate, base cuneate, lilac with pink dots near the base; the lower petals 22 – 25 by 7 – 12 mm, free, narrowly obovate, apex emarginate and mucronate, base auriculate, lilac, with yellow auricle. Stamens: filaments 5 – 6 mm long, white; anthers white. Ovary c. 4.5 – 5 mm long, c. 1 mm diam, 5 - carpellate, green, glabrous. Fruits c. 25 mm long, c. 4 mm diam, cylindrical, 5 - lobed, green, glabrous. Phenology — Flowering: May to November; fruiting: July to December. Distribution — Myanmar (Chin State, Kachin State, Shan State), Bhutan (Trashiyangtse District), China (Yunnan Province), India (Meghalaya State, Arunachal State, Sikkim State), Nepal (Dhawalagiri Zone). Ecology — Growing in shady areas along roadsides, in mixed deciduous montane forest, 1400 – 2300 m altitude. Other collections examined. INDIA, Hooker s. n. (syn M 0211776, M 0211777), Sikkim, Himalaya, Darjeeling, alt. 4000 – 7000 ft. – MYANMAR, Chin State, Mu Mu Aung et al. 092811 (QBG), Natma Taung National Park, alt. 3070 m, N 21 ° 14.035 ' E 93 ° 54.039 ', 30 July 2013; Kingdon­Ward 22634 (BM), Erakan, Mt Victoria, 6000 ft, 2 Sept. 1956; Kachin State, Toppin 2677 (BM), NE Burmah, alt. 4500 – 5000 ft; Kaulback 314 (BM), Dinghputyang, N 25 ° 58 ' E 97 ° 53 ', alt. 2000 ft, 5 Aug. 1939; Armstrong et al. 1016 (NY 2648897 *), Putao district, Naungmung Township, buffer zone of Hkakabo Razi National Park, N 27.6212 °, E 98.1682 °, alt. 1590 m, 26 Oct. 2015; Armstrong et al. 1192 A (NY 2649106 *), Putao district, Naungmung Township, Hkakabo Razi National Park, between Aliaung village and Ran Nam rest house, N 27.7105 °, E 98.1024 °, alt. 942 m, 1 Nov. 2015; Kaulback 125 (BM), Kaulback 126 (BM), Kaulback 136 (BM), Taron Valley, N 28 ° 10 ' E 98 ° 10 ', alt. 7500 ft, 19 Oct. 1938; Shan State, Ruchisansakun et al. 719 (L L 2071089, MAND, RAF), Taunggyi, N 20 ° 46 ' 49.61 " E 97 ° 03 ' 07.39 "; Dewan Mohinder Nath Nair et al. 6375 (RANG 015305), Taunggyi, 6 Oct. 1963; Ruchisansakun et al. 722 (L L 2071096, MAND, RAF), Taunggyi, N 20 ° 46 ' 49.61 " E 97 ° 03 ' 07.39 "; Ruchisansakun et al. 729 (L L 2071114, MAND, RAF), Taunggyi, N 20 ° 45 ' 33.34 " E 97 ° 18 ' 34.39 "; Robertson 343 (K), Taunggyi, alt. 5000 ft; U Mg Gale­ 2 12162 (RAF 9663 / 2), ibid., 27 Sept. 1970. Notes — Impatiens arguta is a widespread species, distributed from India to China, with a variable flower colour between populations. Map 12 Distribution of Impatiens arguta Hook. f. & Thomson (●) and I. duclouxii Hook. f. (●).	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFFCFF9EFFAFFDFABF480029.taxon	description	Phenology — Flowering: July to September; fruiting: July to September. Distribution — Myanmar (Kachin State), China (Yunnan Province), Thailand (Chiang Mai Province). Ecology — Growing in shady areas in mixed deciduous forest or broad-leaved evergreen forest, 1900 – 2200 m altitude. Other collections examined. CHINA, Fr. Ducloux 2613 (syn P P 04614775, P P 04614778), Yunnan; Delavay s. n. (syn K K 000694005, P P 04614773, P P 04614774, P P 04614776), Pee tsao long, 1895; Henry 12559 (syn B B 100365159 *, E E 00313630, K K 000694007, K K 000694008, NY NY 00387525 *), Szemao, alt. 5000 ft; Henry 9267 (syn K K 000694004), Mengtsze, alt. 7000 ft (2134 m), 1898. – MYANMAR, Kachin State, Kaulback 410 (BM), Hkawng Gaw, N 25 ° 58 ' E 98 ° 00 ', alt. 2500 ft (762 m), 12 Sept. 1939; Toppin 2745 (K), Kachin Hills, Sinlum, 13 Aug. 1912, alt. 1980 – 2130 m; Armstrong et al. 1153 (NY 2687903), Putao district, Naungmung Township, Hkakabo Razi National Park, between Ta Pai rest house and Aliaung village, N 27.6704 ° E 98.1456 °, alt. 983 m, 30 Oct. 2015. Note — Impatiens duclouxii belongs to the Impatiens jurpia complex (Grey-Wilson 1989 b). It is very similar to I. jurpia Buch. - Ham. ex Hook. f. & Thomson (Hooker & Thomson 1860: 140) but differs in having a shorter peduncle (shorter than 22 mm). It is also similar to I. kathmanduensis Grey-Wilson (1989 b: 119) but differs from that species in having a longer dorsal petal appendage (longer than 4 mm). In Myanmar, it is most similar to I. chimiliensis but differs from it in having a shorter peduncle, a shorter rachis and a spur that ends in a hook or spiral. Section Uniflorae Hook. f. & Thomson (1860) 113	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFFCFF9FFCF6FE2BBB47071C.taxon	description	Terrestrial, annual herb, 25 – 40 cm tall. Stem erect, 2 – 3 (– 6) mm diam, cylindrical, unbranched to rarely branched, green to red, glabrous. Leaves decussate. Petiole sessile – 2 mm long, c. 1.5 mm diam, green to red. Lamina 45 – 60 by 4 – 9 mm, linear to narrowly oblong, apex acute, base truncate; lateral veins 4 or 5 pairs; margin shallowly serrate, adaxial green, abaxial pale green. Inflorescence axillary, erect, in 2 - flowered fascicles. Flowers 9 – 10 by 9 – 10 mm, 7 – 8 mm deep, white to pale pink with purple reticulate lines at centre. Bracts c. 1 by <1 mm, linear, apex acute and mucronate, base cuneate, green to red. Pedicel 12 – 14 mm long, less 1 mm diam, reddish pink, abaxially pilose. Lateral sepals 2, 4 – 5 by 0.5 – 1 mm, free, linear, apex acute, base cuneate, pale pink with green tip, glabrous. Lower sepal 4.5 – 5 by c. 3.5 mm, c. 3 mm deep, navicular, apex acute and mucronate, white to pale pink with purple reticulate lines and yellow mark at centre, glabrous, spurless. Dorsal petal c. 4 by 5 mm, c. 1.5 mm deep, broadly ovate, cucullate, white with green tip, apex round and mucronate, base round, abaxial midvein with narrow crest terminating in a short acute point. Lateral united petals 9 – 10 mm long, free: the upper pair c. 3 by 1.5 mm, falcate to ovate, apex obtuse to acute, base cuneate, white; the lower petals 5 – 6 by 4 – 5 mm, free, orbicular, apex round, base obtuse, white with purple reticulate vein at the base. Stamens: filaments c. 2 mm long, white; anthers white to pale purple. Ovary c. 2 mm long, <1 mm diam, 5 - carpellate, green, glabrous. Fruits 10 – 12 mm long, 3 – 4 mm diam, fusiform, 5 - lobed, green, glabrous. Seeds c. 2 mm long, black and shiny. Phenology — Flowering: April to November; fruiting: April to November. Distribution — Myanmar (Shan State, Kayin State), Laos (Champasak Province). Ecology — Growing in open areas, 500 – 1300 m altitude. Other collections examined. LAOS, Poilane 15777 (para P P 04542465), entre Pakson et Nong Bok Kao; Poilane 28442 (para P P 04542464), ibid., 13 Nov. 1938. – MYANMAR, Karen State, Ruchisansakun & Thet Yu New 747 (L L 2071157, RAF, RANG), Hpa-An, Zwegabin mountain, N 16 ° 49 ' 15.8 " E 97 ° 40 ' 19.5 ", alt. 481 m, 19 Oct. 2015. Notes — Impatiens ecalcarata is morphologically similar to other species with decussate leaves and flowers arranged in fascicles (I. chinensis, I. helferi, I. masonii, I. oppositifolia). However, it can be easily distinguished by its spurless lower sepal. The distribution of this taxon is unusual. It is known from southern and north-eastern Myanmar and Laos, but has not been found in Thailand so far. Impatiens ecalcarata is identical to I. angustisepala, both in reproductive and vegetative parts. Hence, we decided to synonymize I. angustisepala under I. ecalcarata. Collett & Hemsley (1890) mentioned that I. ecalcarata was collected in the Shan Hills at 4 000 ft. Since we could not find Fig. 15 The lectotype Impatiens ecalcarata Collett & Hemsl. Illustration taken from Collett & Hemley (1860). any specimens, but an illustration of this plant is present in the protologue (Collett & Hemsley plate IV), we select this as lectotype. Based on its small white flowers, we predicted that this species is an autogamous species, similar to I. muscicola (Ruchisansakun et al. 2016). Moreover, we found that the open stamens remain and touch the stigma. Tardieu-Blot (1944) clearly designated Poilane 15637 as a type of I. angustisepala.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFFDFF98FFAFF929B88603C3.taxon	description	Impatiens masonii Hook. f. (1905) 29,34; W. J. Kress et al. (2003) 170. — Type: Badalkhan 119 (lecto, designated here K K 000694709), Myanmar, upper Burma, Mandalay district, 40 miles from Mandalay, July 1888.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFFDFF98FFAFF929B88603C3.taxon	description	Phenology — Flowering: July to September; fruiting: September to November. Distribution — Myanmar (Mandalay, Shan State), Thailand (Chaiyaphum, Chiang Mai, Lamphun, Loei, Phetchabun). Ecology — Growing among grasses in open grassland or mixed montane forest, 1200 – 1600 m altitude. Other collections examined. MYANMAR, Mandalay Region, Lace 3269 (E E 00753105, E E 00753106), Maymyo, alt. 3500 ft, 7 July 1908; Lace 1016 (K), ibid., Shan State; Ruchisansakun et al. 720 (L L 2071093, MAND, RAF), Taunggyi district, on the way to Shwephonpwiat, N 20 ° 46 ' 00.79 " E 97 ° 03 ' 36.03 ", alt. 1578 m, 19 Sept. 2015; Ruchisansakun et al. 724 (L L 2071102, MAND, RAF), N 20 ° 50 ' 51.62 " E 97 ° 14 ' 14.34 ", alt. 1196 m, 20 Sept. 2015; Ruchisansakun et al. 728 (L L 2071113, MAND, RAF), Sangaw village, N 20 ° 45 ' 49.78 " E 97 ° 18 ' 20.73 ", alt. 1501 m, 23 Sept. 2015. – THAILAND, Bunpheng 571 (para BKF), Loei, Phu Kradueng, Phu Kradueng National Park, on the plain at its summit, alt. 1200 m. Notes — Impatiens craddockii and I. pseudochinensis were published as distinct species because they seemingly differed in the shape of their lateral sepals, leaves, and in floral size. Map 13 Distribution of Impatiens ecalcarata Collett & Hemsl. (●), I. masonii Hook. f. (●), I. chinensis L. (●) and I. oppositifolia L. (●). However, since these characters vary continuously, both names are synonymized under I. masonii. The names I. masonii and I. craddockii were published in the same publication (Hooker 1905). However, the description of I. masonii comes before that of I. cradockii, so I. masonii is regarded as the accepted name and I. craddockii as a synonym. Impatiens masonii is most similar to I. chinensis but differs in having large upper lateral petals and ovate to lanceolate lateral sepals as opposed to I. chinensis. Moreover, I. masonii is always associated with non-swampy grasslands whereas I. chinensis always grows in swampy areas. Hooker (1905) did not designate types for I. masonii and I. craddockii. We select Badalkhan 119 (K 000694709) as lectotype of I. masonii because it is the only specimen with illustrations by Hooker. For I. craddockii, we found two specimens and select Craddock 58 (K 000694704) because it provides more details.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFFAFF98FFAFFD14B90D0524.taxon	description	Impatiens cosmia Hook. f. (1910 b) t. 2915. — Type: Faber s. n. (lecto, designated in Dessai & Janarthanum (2011) W 0016508 *; Jacobs 186 (syn K K 000381731), China, Cheking, Jungkun (Tungkun).	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFFAFF98FFAFFD14B90D0524.taxon	description	Phenology — Flowering: June to December. Distribution — Myanmar (Chin State, Kachin State, Mandalay Region, Shan State, Tanintharyi Division), India, China, Laos, Thailand, Vietnam. Ecology — Growing in swampy areas, 150 – 1300 m altitude. Other collections examined. MYANMAR, Chin State, Venning 101 (K), Chin Hills, Kachin State, Ruchisansakun & Thet Yu Nwe 750 (L L 2071165), Indawgyi lake Wildlife Sanctuary, base of Singaung Taung (Elephant mountain), N 25 ° 01 ' 13 " E 96 ° 19 ' 28 ", alt. 184 m; Mandalay division, Lace s. n. (E E 00753068), Maymyo Plateau, alt. 3500 ft, 1911; Lace 3260 (K), ibid., 19 June 1908; Ruchisansakun 704 (L L 2071063, MAND, RAF), near to the lake, N 22 ° 00 ' 30.82 " E 96 ° 28 ' 08.78 ", alt. 1080 m, 8 Aug. 2015; Dewan Mohinder Nath Nair 3726 (RANG 4749), Enesakhan, near Maymyo, 22 Dec. 1958; Ruchisansakun & Thet Yu Nwe 761 (L L 2071198, MAND, RAF), Mogok, Mintatar quarter, N 22 ° 55 ' 03.7 " E 96 ° 28 ' 39.6 ", alt. 1133 m, 23 Nov. 2015; Shan State, Ruchisansakun 725 (L L 2071103, MAND, RAF), Taunggyi, 20 Sept. 2015; Melville 92 (BM), ibid.; Tanintharyi Region, Ruchisansakun et al. 739 (L L 2071142), RAF nursery, 15 Oct. 2015; Toppin 2780 (K H 2015 / 00092 66, 67, 68), NE Burma, alt. 3000 ft, 18 Oct. 1914; Wall. Cat. no. 4748 B (K K 001039817), Taong (Toong) Dong, 1826. Note — Impatiens chinensis has a large variation in leaf and spur shape between populations. It is most similar to I. oppositifolia but differs in having an incurved spur vs a short hook-like spur. Many published taxa have been synonymized under I. chinensis (see Dessai & Janarthanam (2011) for a detailed report).	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFFAFF99FCF6FB33BB02092D.taxon	description	Impatiens helferi Hook. f. (1905) 28; W. J. Kress et al. (2003) 169. — Type: Helfer 1215 (lecto, designated here K K 000694702; isolecto P P 04543314), Myanmar (Burma), Tanintharyi division, Tenasserim, 1838. Annual herb, 20 – 40 cm tall. Stem erect, 2 – 4 mm diam, unbranched to rarely branched, glabrous. Leaves decussate. Petiole up to 1 mm long, c. 1 mm diam, glabrous. Lamina 45 – 65 by 4 – 7 mm, linear to narrowly oblong, apex acute to obtuse, base truncate to obtuse, margin slightly serrate, glabrous on both sides, with one stipular gland on each side of petiole base; lateral veins inconspicuous. Inflorescence axillary, erect, 1 – 3 - flowered fascicle. Flowers 6 – 11 mm long, 5 – 7 mm deep. Bracts c. 1 by <1 mm, linear, apex acute, base cuneate, margin entire, without glands, glabrous, persistent. Pedicel 10 – 15 mm long, <1 mm diam, pilose above. Lateral sepals 2, 3.5 – 4 mm long, <1 mm diam, free, linear, apex acute and mucronate, base cuneate, glabrous. Lower sepal 4 – 5 mm long, 1.5 mm deep, navicular, apex acuminate and mucronate, glabrous, distal part abruptly constricted into a curved to incurved spur, 4 – 5 mm long. Dorsal petal c. 2 by 3 mm, cordate, cucullate, apex emarginate and mucronate, base cuneate, glabrous, abaxial midvein simple. Lateral united petals 8 – 10 mm long, free: the upper petals 2 – 3 by 1 – 1.5 mm, obovate, apex obtuse, base cuneate; the lower petals 5 – 6 by 3 – 4 mm, free, obovate, apex round, base with distinct auricle, c. 0.5 mm wide, glabrous. Stamens: filaments c. 2 mm long. Ovary c. 2 mm long, c. 1 mm diam, glabrous. Fruits 6.5 – 7 mm long, 2.5 mm diam, short fusiform, glabrous; fruiting pedicels 18 – 20 mm long, straight. Seeds 2.5 mm long, globose, black shiny; seed coat smooth. Phenology — Unknown. Distribution — Endemic to Myanmar (Tanintharyi division), only known from the type locality. Ecology — Unknown. Plate 3 a. Impatiens oppositifolia L.; b. Impatiens decurva Ruchis. & S. B. Janssens; c. Impatiens balsamina L.; d. Impatiens curvipes Hook. f.; e. Impatiens florulenta Hook. f.; f. Impatiens oblongata Ruchis. & Niet; g. Impatiens violiflora Hook. f.; h. Impatiens allanii Hook. f. — Photos by: a – h. Saroj Ruchisansakun. Notes — Impatiens helferi is very similar to I. chinensis but differs in having much smaller flowers. Due to these small flowers, it is also similar to I. oppositifolia but differs in having linear to narrowly oblong leaf lamina up to 7 mm wide vs ovate, elliptic, to oblong leaf lamina which is wider than 15 mm. Hooker did not designate a holotype of I. helferi. We found two specimens collected by Helfer and named as I. helferi and we selected Helfer 1215 (K 000694702) as lectotype since it has an illustration by Hooker.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFFBFF9AFCF6F8FCBB1707DB.taxon	description	Impatiens oppositifolia L. (1753) 937. — Type: Paul Hermann s. n (lecto, designated in Grey-Wilson (1985) BM BM 000621557), Sri Lanka.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFFBFF9AFCF6F8FCBB1707DB.taxon	description	Phenology — Flowering: August to January; fruiting: September to January. Distribution — Myanmar (Kayin State, Mon State, Yangon Region), India (Madras), Thailand (western and southern). Ecology — Growing near paddies, but not in swampy areas, 16 – 30 m altitude. Other collections examined. INDIA, Johann Peter Rottler 89 (LINN- HS 1379 - 6), Madras. – MYANMAR, Kayin State, Ruchisansakun & Thet Yu Nwe 717 (L L 2071083, RAF, RANG), Hpa-An, the road to Zwegabin mountain, N 16 ° 50 ' 12.59 " E 97 ° 40 ' 58.34 ", 20 Aug. 2015; Mon State, Lace 5578 (K H 2015 / 00092 47), Amherst district (Kyaikkami), Dali reserve, alt. 100 ft (30 m), 11 Jan. 1912; Yangon Region, Parkinson 15016 (K H 2015 / 00092 46), Rangoon district, Thayagon, 18 Sept. 1932; Wall. Cat. no. 4750 (K K 001039821), Rangoon, 1826. Notes — Impatiens oppositifolia is similar to I. chinensis but differs in having a semipellucid lower sepal with reticulate veins, and a short-hook-like spur. It is also similar to I. helferi but differs in having flowers which are 13 – 15 mm long vs 6 – 11 mm long, ovate, elliptic to oblong lamina wider than 15 mm vs linear to narrowly oblong leaf laminas which are up to 7 mm wide. Wallich published I. reticulata without referencing any specimen. However, he included a detailed coloured illustration in the protologue (Wallich 1830: t. 19). We decided to select that illustration as lectotype.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFF8FF9AFFAFF914BE5A05CB.taxon	description	Impatiens decurva Ruchis. & S. B. Janssens in Ruchisansakun et al. (2018). — Type: Ruchisansakun & Makino BG Exped 734 (holo L L 2071124; iso L, RAF, RANG), Myanmar, Shan State, Kalaw, N 20 ° 39 ' 21.92 " E 96 ° 34 ' 55.89 ", 27 Sept. 2015. Lithophytic, annual herb, 6 – 30 cm tall. Stem erect, 1 – 3 mm diam, cylindrical, simple to moderately branched, red, glabrous. Leaves spirally arranged, mostly crowded towards apex of the stems. Petiole absent – 7 mm long, c. 1 mm diam, pale green to green to pink, glabrous. Lamina 10 – 40 by 5 – 15 mm, ovate to elliptic to obovate, apex acute to acuminate, base cuneate to attenuate, margin shallowly serrate, adaxial green and pilose along the leaf veins and margin, abaxial pale green and glabrous, with 3 – 5 long red hairs along the margin near the base; lateral veins 3 – 5 pairs. Flowers solitary, axillary, erect, 10 – 11 by 8 – 10 mm, 6 – 8 mm deep, pale pink and white, with yellow marks at the centre. Bracts <1 by <1 mm, linear to narrowly lanceolate, apex acute and mucronate, base cuneate, green with red apex, persistent. Pedicel 10 – 15 mm long, <1 mm diam, pale green, pilose. Lateral sepals 2, <1 by 1 mm, free, ovate to lanceolate, apex acute, base obtuse, pale green with red tip, glabrous. Lower sepal 4 – 5 by 2.5 – 3 mm, c. 2 mm deep, navicular, apex acuminate and mucronate, white with red tip, pilose outside, spurless. Dorsal petal 4 – 5 by 5 – 5.5 mm, broadly ovate, cucullate, apex round and slightly mucronate, base truncate to shallowly cordate, white, glabrous, but pilose on midrib, abaxial midvein simple or with narrow crest, c. 1 mm wide, green. Lateral united petals 7 – 9 mm long, free: the upper petals 4.5 – 5 by 2.5 – 3 mm, ovate, apex round, base cuneate, white to pale pink; the lower petals 6 – 7 by 3.5 – 4 mm, free, elliptic to obovate, apex unequally bilobed, pink with yellow mark at the base. Stamens: filaments c. 2.5 mm long, white to pale pink; anthers pale pink. Ovary 2 mm long, <1 mm diam, 5 - carpellate, green, pilose. Fruits 8 – 10 mm long, 2.5 – 3 mm diam, fusiform, 5 - lobed, green, pilose; pedicel strongly decurved from the middle in young fruiting stage. Seeds 9 – 11, c. 2 mm long, ovoid, brown. Phenology — Flowering: September to October; fruiting: October. Distribution — Endemic to Myanmar (Shan State). Ecology — Growing on limestone at the top of montane areas in fragmented evergreen forest, 1500 – 1600 m altitude. Note — Impatiens decurva is similar to I. pendula and I. muscicola but differ in having lower lateral petals with an unequally bilobed apex and a pedicel that is strongly decurved from the middle at fruiting stage.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFF8FF9BFCF6FB1ABBBD04B0.taxon	description	Impatiens arcuata Wight & Arn. (1834) 136. — Impatiens balsamina L. var. arcuata Hook. f. (1875) 454, syn. in Hooker (1904 a) 25. — Type: Wall. Cat. no. 4735 (K K 000694978), India.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFF8FF9BFCF6FB1ABBBD04B0.taxon	description	Phenology — Flowering: October to March; fruiting: September to March. Distribution — Very common, with a wide distribution from India to Indonesia. This species is also cultivated as garden ornamental. Ecology — Cultivated in gardens and along roadsides, 0 – 1700 m altitude. Other collections examined. MYANMAR, Chin State, Ling Shein Mang 092955 (MBK MBK 0250394), around Kanpetlet, Natma Taung National Park, alt. 1350 m, semi-evergreen forest, along stream, 1 July 2013; Wall. Cat. no. 4733 (K K 001039791), Irrawaddy river, 1826. Notes — Linnaeus (1753) did not clearly designate the type in the protologue but the specimen Anonymous s. n. (LINN-HL 1053.5) was deposited at the Linnean Society of London Herbarium (LINN) and was labelled with number 5, which likely represents the species number of I. balsamina in the Species Plantarum. Impatiens balsamina is highly variable in colour. It is unclear whether this variation is natural or represents selective breeding of cultivars. This species has already been widely cultivated a long time ago (Dodoens 1583), so it is very difficult to identify whether populations are wild or cultivated.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFF9FF94FFAFF98DBB37003E.taxon	description	Phenology — Flowering: September to November; fruiting: September to November. Distribution — Endemic to Myanmar (southern Shan State). Ecology — Growing in shady or open areas in mixed deciduous forest, locally abundant, 1200 – 1800 m altitude. Other collections examined. MYANMAR, Shan State, Melville 60 (BM), Taunggyi district, Kalaw Township, alt. 3500 ft, 25 Nov. 1903; Tanaka et al. 080208 (QBG QBG 61265), Kalaw Township, Yae Aye Kan, N 20 ° 35 ' 41 " E 96 ° 31 ' 46 ", alt. c. 1200 m, 26 Nov. 2008; Srisanga et al. M 1 ­ 271 (QBG QBG 80456), Pindaya Township, Pin Sein Pin Village, N 20 ° 59 ' 01.73 " E 96 ° 37 ' 56.07 ", alt. c. 1714 m, 14 Dec. 2014; Ruchisansakun et al. 718 (L L 2071086, RAF, RANG), Taunggyi district, Thansen cave, N 20 ° 49 ' 00.46 " E 97 ° 20 ' 06.24 ", alt. 1259 m, 18 Sept. 2015; Ruchisansakun et al. 721 (L L 2071094, RAF, RANG), Taunggyi district, on the way to Shwephonpwiat, N 20 ° 46 ' 12.47 " E 97 ° 03 ' 31.42 ", 19 Sept. 2015; Ruchisansakun et al. 731 (L L 2071117, RAF, RANG), Taunggyi district, Pindaya, N 20 ° 58 ' 49.53 " E 96 ° 37 ' 41.62 ", alt. 1742 – 1909 m, 26 Sept. 2015; Craddock s. n. (K K 000694696), southern Shan States, alt. 4800 – 5800 ft (1463 – 1768 m), Oct. 1901; Collett 949 (K K 000694695), ibid., Nov. 1888; Khalil s. n. (K K 000694697), Shan State, Taungyi, 1893; Robertson 353 (K), ibid., alt. 5000 ft, 26 June 1911; U MG Gale 2 12159 (RAF 966012, 2 sheets), ibid., 27 Sept. 1970. Notes — Impatiens curvipes can be easily distinguished from other taxa by its high keel-shaped crest on the abaxial side of the dorsal petal and small upper lateral petals. It is most similar to I. florulenta but differs in having a flat instead of a cucullate dorsal petal, and strongly decurved, instead of spreading or slightly recurved pedicels at fruiting stage. It usually has a Map 14 Distribution of Impatiens decurva Ruchis. & S. B. Janssens (●), I. balsamina L. (●), I. curvipes Hook. f. (●) and I. florulenta Hook. f. (●). white leaf base, which is distinct from other species and also detectable in dried herbarium specimens. Hooker (1905) published I. curvipes but did not designate a type. He wrote this name on some specimens in Kew. We select Collett 47 (K 000694694) as lectotype because its locality matches the prologue and it is a complete specimen with detailed illustrations.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFF6FF95FFAFFE09B84305B5.taxon	description	Impatiens florulenta Hook. f. (1905) 25, 32; W. J. Kress et al. (2003) 169. — Type: Khalil s. n. (lecto, designated here K K 000694673), Myanmar, southern Shan State, Saga, 1893.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFF6FF95FFAFFE09B84305B5.taxon	description	Fig. 16 Impatiens florulenta Hook. f. a. Habit; b. front view of flower; c. lateral view of flowers; d. fruit; e. pedicel and ovary; f. stamens; g. lower lateral sepals; h. lower sepal; i. dorsal petal; j. lateral united petals. — Drawn by Saroj Ruchisansakun. and mucronate, white to pale pink, pilose outside, distal part gradually tapering into a straight spur, 15 – 16 mm long, pink with red tip. Dorsal petal 7 – 8 by 8 – 9 mm, obovate to broadly obovate to orbicular, cucullate, apex emarginate, base obtuse to round, pink, glabrous with pilose midrib, abaxial midvein with a keel-shaped crest, c. 3 mm wide, pink to white. Lateral united petals 14 – 15 mm long, free: the upper petals c. 6 by 4 – 5 mm, orbicular to obovate, apex round, base cuneate, pink with white base, and deep pink lines at the base; the lower petals 11 – 12 by 6 – 7 mm, free, broadly lanceolate to broadly ovate to broadly elliptic, apex unequally bilobed, pink with white base, sometimes with small yellow mark at the base. Stamens: filaments c. 4 mm long, white to pink; anthers pink. Ovary 4 mm long, c. 1 mm diam, 5 - carpellate, green, pilose. Fruits 10 – 11 mm long, 4 – 5 mm diam, fusiform, 5 - lobed, green, pilose with short hairs. Seeds 17 – 20, c. 1.5 mm long, ovoid, brown. Phenology — Flowering: September to October; fruiting: September. Distribution — Myanmar (Shan State), northern Thailand. Ecology — Growing in open or shady areas in mix deciduous forest, 1150 – 1300 m altitude. Other collections examined. MYANMAR, Shan State, Ruchisansakun et al. 736 (L L 2071132, MAND, RAF), Taunggyi District, N 21 ° 08 ' 00.68 " E 96 ° 24 ' 44.97 ", alt. 1150 m, 29 Sept. 2015. Notes — Impatiens florulenta is most similar to I. curvipes but differs in having a cucullate dorsal petal, a spreading or slightly recurved pedicel in fruiting stage, and fruits with short hairs, while I. curvipes has a flat dorsal petal and strongly decurved pedicel in fruiting stage. Hooker (1905) mentioned that this species is characterized by a glabrous fruit, yet the type specimen has pilose fruits (with short hairs). The population in Thailand was misidentified as I. curvipes (Shimizu 1970). Similar to many taxa in Hooker (1905), Hooker did not designate a type of I. florulenta. We found only one specimen (with an illustration), Khalil s. n. (K 000694673), on which the name I. florulenta is based and which matches the protologue, except pilose fruits, so we selected it as lectotype.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFF7FF95FFAFFA80BEE40252.taxon	description	Impatiens oblongata Ruchis. & Niet (in Ruchisansakun et al. 2018) 70. — Type: Ruchisansakun & Makino BG Exped. 735 (holo L L 2071128; iso L L 2071129, L L 2071130, L L 2071131, RAF, RANG), Myanmar, Shan State, Kalaw, N 20 ° 39 ' 24 " E 96 ° 34 ' 96 ", alt. 1569 m, 27 Sept. 2015. Terrestrial, annual herb, 30 – 50 cm tall. Stem erect, 1 – 4 mm diam, angular, simple, or moderately to richly branched, red, glabrous, only remotely pilose towards apex. Leaves spirally arranged. Petiole 3 – 10 mm long, c. 1 mm diam, pale green to pink, pilose. Lamina 50 – 75 by 10 – 20 mm, lanceolate to narrowly ovate, apex acute, base cuneate to attenuate, margin serrate, adaxial green, abaxial pale green, pilose on both sides, with 3 – 5 long red hairs along the margin near the base; lateral veins 6 or 7 pairs. Inflorescence axillary, erect, solitary. Flowers 19 – 20 by 16 – 18 mm, 14 – 17 mm deep, pink, with small dark pink dots and small yellow dots at the centre. Bracts c. 2 mm by <1 mm, linear, apex acute, base cuneate, green with red apex, pilose, persistent. Pedicel 18 – 20 mm long, <1 mm diam, pink, pilose. Lateral sepals 4, sometimes the upper pair reduced: the upper pair c. 2 by <1 mm, sometimes absent, linear to oblong, apex acute, base cuneate, pale green with red tip, pilose; the lower pair 1.5 – 2 by 1.5 – 2 mm, ovate, apex acuminate, base obtuse, pink, glabrous. Lower sepal 5 – 6 by 3 – 4 mm, 3 – 4 mm deep, navicular, apex acuminate and mucronate, pale pink with dark pink mark near the base, pilose outside, distal part abruptly constricted into a straight or curved spur, 8 – 12 mm long, pink with dark pink tip. Dorsal petal 5 – 6 by 6 – 9 mm, broadly obovate, flat, apex truncate and stipitate, up to 2 mm long, base truncate, pink with green stipitate tip, glabrous with pilose midrib and tip, abaxial midvein with an acute appendage, <1 mm tall, pink or green. Lateral united petals 12 – 14 mm long, free: the upper petals 7 – 8 by 4 – 5 mm, broadly oblong, apex truncate to slightly emarginate, base cuneate, pink; the lower petals 10 – 11 by 4 – 5 mm, free, elliptic to obovate, apex truncate to slightly bilobed, pink with yellow dot and dark pink dot at the base. Stamens: filaments c. 2.5 mm long, pale pink; anthers pale pink. Ovary c. 2 mm long, c. 1 mm diam, 5 - carpellate, green, pilose with short hairs. Fruits 15 – 20 mm long, 4 – 5 mm diam, fusiform, 5 - lobed, green, pilose with short hairs. Seeds 6 or 7, c. 3 mm long, ovoid, brown. Phenology — Flowering: September to October; fruiting: September to October. Distribution — Endemic to north-eastern Myanmar (Shan State), only known from the type locality. Ecology — Growing in shady areas at the top of the mountain in open fragmented evergreen forest, 1500 – 1600 m altitude. Note — Impatiens oblongata usually has four lateral sepals, rarely two, in contrast to similar species, such as I. patula, I. violiflora, I. curvipes and I. florulenta.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFF7FF96FCF6FCEDBB7905E6.taxon	description	Terrestrial, annual herb, up to 50 cm tall. Stem erect, c. 6 mm diam, moderately branched, green, glabrous to pilose towards apex. Leaves spirally arranged, sometime decussate to subopposite at the lower nodes. Petiole up to 20 mm long, c. 2 mm diam, cylindrical, green to red, with many glandular hairs, pilose. Lamina up to 75 by 30 mm, ovate to ovate-oblong, apex acute to acuminate, base attenuate, margin serrate, papyraceous, green pilose on both sides, with many glandular hairs at the margin in basal third of the leaf; lateral veins 6 or 7 pairs. Inflorescence axillary, erect, 1 - or 2 - flowered fascicle. Flowers c. 25 mm long, pink. Pedicel c. 35 mm long, c. 1 mm diam, green, pilose. Bracts c. 2 by 1 mm, linear, apex acute, pink, pilose. Lateral sepals 2, c. 2 by 1 mm, free, ovate, apex acute, base cuneate, brownish green, glabrous. Lower sepal c. 7 by 7 mm, 6 mm deep, navicular, apex mucronate, base obtuse, pinkish white, pilose outside, dorsal part abruptly constricted into a narrow slightly incurved spur, up to 32 mm long, pink with dark pink tip. Dorsal petal c. 14 by 22 mm, broadly obcordate, flat, apex emarginate, base round, pink, glabrous to pilose on midrib, abaxial midvein with narrow crest, green tip. Lateral united petals free: the upper petals 12 by 8 mm, obovate, apex obtuse to truncate, base cuneate, pink; the lower petals c. 13 by 8 mm, free, obovate, apex obtuse, pink, with yellow spot at the base, glabrous. Stamens: filaments c. 3 mm long, white; anthers purple. Ovary c. 3 mm long, 5 - locular, green, pilose. Fruits c. 15 mm long, c. 8 mm diam, fusiform, 5 - lobed, green, pilose. Seeds 6 – 8. Phenology — Flowering: June to December; fruiting: July to December. Distribution — Myanmar (Kachin State, Mandaly Region, Shan State, Kayin State, Tanintharyi Region), China (Yunnan Province), Thailand (Chiang Mai, Chiang Rai, Prae, Kanchanaburi, Tak), Vietnam. Ecology — Growing in open areas, along roadsides in evergreen forest or mixed deciduous forest, abundant when present, 550 – 1450 m altitude. Other collections examined. MYANMAR, Kachin State, Buchanan 4 (E E 00752726, K H 2015 / 00092 161), Myitkyina, Suma Hills, alt. 3000 – 4000 ft (914 m), 30 Nov. 1910; Buchanan 5565 (K H 2015 / 00092 164, H 2015 / 00092 165), Myitkyina, Suma Hills, near side of Irawaddy, alt. 3500 – 5000 ft, 29 Oct. 1911; Toppin 2679 (K), Sinlum; Keenan et al. 3899 (RAF 7466 / 3, 2 sheets), Sumprabum subdivision, N 26 ° 40 ' E 97 ° 20 ', alt. 5000 – 7000 ft, Mar. 1962; Mandalay Region, Lace 5496 (E E 00752727; K H 2015 / 00092 163, H 2015 / 00092 166), Pyin Oo Lwin district (Maymyo), Anisakarn falls, alt. 2500 ft, 15 Oct. 1911; Ruchisansakun 759 (L L 2071189, L L 2071190), Mogok, Mogok along the roadside, N 22 ° 54 ' 10.9 " E 96 ° 23 ' 53.0 ", alt. 1390 m, 22 Nov. 2015; Ruchisansakun 762 (L L 2071199, L L 2071200, L L 2071201, L L 2071202), Mogok, Mintatar quarter, N 22 ° 55 ' 03.7 " E 96 ° 28 ' 39.6 ", alt. 1134 m, 23 Nov. 2015; Lace 5983 (E E 00752725, E E 00752728, K H 2015 / 00092 162), Ruby Mines district (Mogok), Wapundaung, alt. 1000 – 5000 ft; Daw Nilar Khin & Daw Nu Nu Yee 31 (RANG), Yamethin district, Momi Taung, 16 Oct. 2002; Shan State, Ruchisansakun 723 (L L 2071099, L L 2071100, L L 2071101, MAND, RAF, RANG), Taunggyi district, N 20 ° 50 ' 59.09 " E 97 ° 14 ' 13.67 " and Lomkok mountain, N 20 ° 49 ' 03.45 " E 97 ° 13 ' 28.19 ", alt. 1169 – 1191 m, 20 Sept. 2015. Note — In previous studies, populations from Myanmar and Thailand were identified as I. violiflora, whereas populations from China and Indochina were identified as I. aureliana (Hooker 1911 a, Chen et al. 2007). However, I. aureliana cannot be distinguished morphologically from I. violiflora. It seems to have smaller flowers, but we observed that I. violiflora is characterized by extensive size variation with regard to both floral and vegetative parts, even within the same population. Furthermore, the long red hairs and glands at the base of the lamina and petioles were mentioned as distinct characters of I. aureliana, but we also found these in I. violiflora (Wu 2006). Hence, we decided to synonymize I. aureliana under I. violiflora. Hooker (1875) did not designate a type I. violiflora. We found only Lobb s. n. (K 000694901), which matches the protologue. Hence, we designate it as lectotype. For I. aureliana, we believe that specimen P 00780659 is the holotype because it is the only specimen that matches the protologue and the drawing on this specimen is exactly similar to the illustration in the protologue (Hooker 1908).	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFF4FF96FFAFFB74BE0B052A.taxon	description	Impatiens mokimi Hook. f. (1905) 26; W. J. Kress et al. (2003) 170. — Type: Mokim s. n. (lecto, designated here K K 000694787), Myanmar (Burma), upper Burma, Kachin Hills, 1897. Map 15 Distribution of Impatiens oblongata Ruchis. & Niet (●), I. violiflora Hook. f. (●), I. mokimi Hook. f. (●) and I. allanii Hook. f. (●). Annual herb, c. 16 cm tall. Stem erect, c. 1 mm diam, moderately branched, glabrous. Leaves spirally arranged but decussate at the two lowest nodes. Petiole 7 – 9 mm long, glabrous. Lamina 30 – 42 by 8.5 – 10 mm, narrowly elliptic, apex acute, base attenuate, margin serrate, adaxial pilose to densely pilose, abaxial glabrous to pilose, with 1 or 2 long hairs along the margin near lamina base and 2 – 5 globose glands on each side of petiole; lateral veins 4 or 5 pairs. Flowers solitary, axillary, erect, c. 7.5 by 7 mm, c. 13 mm deep, pink. Bracts linear. Pedicel 19.5 mm long, pilose. Lateral sepals 2, c. 1 mm long, obliquely ovate, apex acute and mucronate, base obtuse, green. Lower sepal c. 3 mm long, 2.5 mm deep, navicular, apex acute and mucronate, glabrous to pilose, distal part rapidly constricted into a slender spur, 19 mm long. Dorsal petal c. 4 by 6 mm, broadly oblanceolate, flat, apex truncate, base cuneate, glabrous, abaxial midvein simple or with narrow crest. Lateral united petals 4.5 – 5 mm long, free: the upper petals c. 3.5 by 2.5 mm, broadly oblanceolate, apex truncate, base cuneate; the lower petals c. 3.5 by 4 mm wide, free, broadly oblanceolate, apex truncate. Stamens: filaments c. 2.5 mm long. Ovary 1.5 – 2 mm long, 1 mm diam, pilose. Fruits fusiform, turgid in the middle, narrowed at both ends. Seeds unknown. Phenology — Unknown. Distribution — Endemic to northern Myanmar (Kachin Hills). Ecology — Unknown. Notes — Impatiens mokimi is similar to I. violiflora but differs in having smaller flowers and narrowly elliptic leaves with a cuneate base. More information is required to infer its status. Hooker (1905) did not designate a type of I. mokimi. We found only one specimen, Shaik Mokim s. n. (K 000694787), written I. mokimi with an illustration that matches the protologue, so we selected it as the lectotype.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFF4FF97FCF6FB3EB886028A.taxon	description	Phenology — Flowering: July to January. Distribution — Endemic to Myanmar (Ayeyarwady Region, Magway Region, Rakhine State). Ecology — Growing along roadsides in open areas of evergreen forest. The species is also found near the beach, 10 – 900 m altitude. Other collections examined. MYANMAR, Magway Region, Roger 1 (K), Thayetmyo, Ale Chaung, alt. 700 ft, 28 Oct. 1911; Roger 2 (K), Sheolaung stream, alt. 750 ft, 3 Nov. 1911; Rakhine State, Ruchisansakun & Saw­Lwin 700 (L L 2071055, RAF, RANG), Thoungup road, N 18 ° 39 ' 51.5 " E 94 ° 45 ' 28.7 ", alt. 892 m; Ruchisansakun & Saw­Lwin 703 (L L 2071061, L L 2071062, RAF, RANG), Thandwe district, Ngapali beach, N 18 ° 23 ' 42.3 " E 94 ° 20 ' 16.8 ", alt. 18 m. Note — Impatiens allanii has large, flat, bicoloured flowers with long spurs. It can grow in dry, open lowland areas but also in very humid conditions. Hence, this species is highly recom- mended for horticultural use. It is most similar to I. bracteata Colebr. ex Roxb. (Roxburgh & Carey 1824: 459) but differs in having bracts with entire margins, instead of ciliate ones. Ridley (1914) clearly mentioned Allan s. n. (K 000694629) as type in the protologue and this specimen also includes a complete illustration drawn by Hooker that is exactly the same to the specimens.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFF5FF97FFAFFC5BB9A30283.taxon	description	Impatiens hartnolliae Hook. f. ex Ruchis. & Suksathan in Ruchisansakun et al. (2018). — Type: Hartnoll s. n. (holo K K 000694663), Myanmar (Burma), Rakhine State (Arakan), Akyab, Urittaung pagoda, 5 Sept. 1907. Terrestrial, annual herb, up to 36 cm tall. Stem erect, c. 12 mm diam, richly branched, glabrous. Leaves spirally arranged. Petiole 6 – 12 mm long, c. 1 mm diam, glabrous. Lamina 110 – 120 by 45 – 50 mm, ovate to elliptic, apex acute to acuminate, base round to obtuse to cuneate, margin crenate to serrate, adaxial glabrous to remotely pilose, abaxial glabrous, with 2 or 3 pairs of long hairs along the margin near lamina base; lateral veins Map 16 Distribution of Impatiens hartnolliae Hook. f. ex Ruchis. & Suksathan (●), I. parkinsonii C. E. C. Fisch. (●), I. peguana Hook. f. (●) and I. circaeoides Wall. ex Hook. f. & Thomson (●). 8 or 9 pairs. Inflorescence subterminal, erect, 6 - or 7 - flowered racemes. Peduncle 10 – 15 mm long, c. 1 mm diam, glabrous. Rachis 7 – 14 mm long, c. 1 mm diam. Flowers c. 18 mm long, c. 15 mm wide, c. 23 mm deep. Pedicel 9 – 10 mm long, c. 1 mm diam, glabrous. Bracts 2.5 – 3.5 by 1.5 – 2 mm, ovate, apex acute to mucronate, base round, margin entire, glabrous, persistent. Lateral sepals 2, 6.2 – 6.6 by 7.5 – 8 mm, free, orbicular to broadly elliptic, apex round to mucronate, base round, glabrous. Lower sepal c. 10 mm long, c. 8 mm deep, navicular, apex acuminate to mucronate, glabrous, distal part gradually tapering into a straight or curved spur, 15 – 17 mm long. Dorsal petal c. 6.5 by 8 mm, broadly obovate, apex emarginate, base obtuse, truncate, glabrous, abaxial midvein simple or with a narrow crest. Lateral united petals c. 15.5 mm long, free: the upper petals 9 – 10 by 5 – 5.5 mm, obliquely broadly oblong, apex truncate and slightly emarginate, base cuneate; the lower petals 8.5 – 9 by 3.5 – 4 mm, free, oblong, apex truncate, base without auricle. Stamens: filaments 4 – 5 mm long; anthers obtuse. Ovary c. 3.5 mm long, c. 1 mm diam, glabrous. Fruits fusiform, glabrous. Seeds ellipsoid, c. 1.6 – 2 mm long, pilose. Phenology — Flowering: September; fruiting: September. Distribution — Endemic to Myanmar (Rakhine State). Ecology — Growing in limestone soils. Note — Impatiens hartnolliae can easily be distinguished from other Myanmar species by racemose inflorescence, truncate lateral united petals, an emarginate dorsal petal and a fusiform fruit.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFF5FF90FCF6FC53BB2D092E.taxon	description	Perennial herb, 15 – 30 cm tall. Stem erect, but decumbent in the lower part, unbranched to rarely branched in the lower part, ridged or slightly winged, pilose. Leaves spirally arranged. Petiole absent – 13 mm long, flat, glabrous. Lamina (20 –) 44 – 70 by (5 –) 14 – 20 mm, oblanceolate to narrowly ovate, apex acute, base cuneate to attenuate, margin shallowly crenate with small teeth, glabrous, no distinct gland; lateral veins 4 – 8 pairs. Inflorescence axillary, erect, (1 –) 6 – 14 - flowered raceme. Peduncle 45 – 55 mm long, glabrous. Rachis 5 – 20 mm long. Flowers c. 12 mm long, c. 7 mm deep, purple with deep purple streaks. Bracts 3 – 6 by 2 – 3.5 mm, ovate to elliptic, apex acute to acuminate and mucronate, base round to cuneate, margin entire without glands, yellowish green with pink tinge at the base, glabrous, persistent. Pedicel 5 – 10 mm long, green with pink tinge, glabrous. Lateral sepals 2, 4.5 – 6 by 3 – 4.5 mm, free, orbicular to obliquely ovate, apex round to acuminate and mucronate, base round to obtuse, membranous, yellowish green with pink tinge, glabrous. Lower sepal c. 7 mm long, 4 mm deep, navicular, apex acute, purplish white, distal part abruptly constricted into an incurved spur, 15 – 20 mm long, light purple. Dorsal petal up to 10 by 10 mm, ovate, cucullate to flat, apex obtuse, white with purple streaks, abaxial midvein simple. Lateral united petals c. 15 mm long, free, light purple: the upper petals up to 3 mm wide, triangular-ovate, apex acute, distinctly clawed; the lower petals, up to 7 mm wide, dolabriform, apex acute to obtuse, basal auricles present, up to 1 mm wide, brown. Stamens: anthers obtuse. Fruits up to 9 mm long, 3 mm diam, fusiform, 5 - lobed, greenish with purple tinge, glabrous; pedicels at fruiting stage up to 12 mm long. Seeds 4 or 5, black, smooth. Fig. 17 Impatiens peguana Hook. f. a. Habit; b. front view of flowers; d. lateral sepals; e. lower sepals; f united petals; h. stamens; i. ovary and pedicel. — sansakun. Phenology — Flowering: July to December; fruiting: December. Distribution — Myanmar (Kachin State), India (Arunachal Pradesh, Nagaland) (Gogoi et al. 2015 a). Ecology — Growing in water or rocky places near streams, 900 – 1000 m altitude. Other collection examined. MYANMAR, Kachin State, Maung Po Khanh 1873 (SING SING 0150198), Myitkyina District, Pidaung Reserve, 7 July 1926. Note — Impatiens parkinsonii is very different from all other Impatiens species in Myanmar. The most similar species is I. rangoonensis, but I. parkinsonii has smaller flowers, as well as an oblanceolate to narrowly ovate leaf lamina. It is also similar to I. acuminata Benth. ex Hook. f. & Thomson (1860: 145) but differs in having a longer peduncle and ovate to elliptic bracts. Impatiens hukaungensis was just published this year (Tanaka et al. 2018), but its description and photographs are exactly similar to I. parkinsonii.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFF2FF91FCF6F9C8B8610298.taxon	description	Phenology — Unknown. Distribution — Endemic to Myanmar (Bago Region). Ecology — Unknown. Notes — Impatiens peguana was included in I. circaeoides in the Flora of British India (Hooker 1875), but Hooker later decided to describe it as a new species (Hooker 1905: 34). It is very similar to I. circaeoides, I. rangoonensis and I. tavoyana and no differences can be found in vegetative morphology, based on the Hooker (1905) description that includes details on leaf arrangement. Impatiens peguana differs from the three above-mentioned species in having a spurless lower sepal and broadly ovate to orbicular lateral sepals. The authors have not seen living plants or any additional specimens beyond the type specimen. Consequently, the current description is based on the type. Hooker did not include a detailed description in the protologue (Hooker 1905). Since Hooker did not designate a type, we select M’Clelland s. n. (K 000694711), the only specimen we found with the name I. peguana and illustration, as lectotype.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFF3FF91FFAFFC55BE5604E1.taxon	description	Impatiens circaeoides Wall. ex Hook. f. & Thomson (1860) 114, 130; Hook. f. (1875) 453; (1905) 29, 34; W. J. Kress et al. (2003) 169. — Impatiens circaeoides Wall. (1831) 168, nom. nud., non Impatiens circaeoides Turcz. (1863) 594. — Type: Wall. Cat. no. 4772 B (lecto, designated here K K 001039868), Myanmar (Burma), Yangon (Rangoon), 16 Aug. 1826. Impatiens lineata Turcz. (1859) 271. — Type: Lobb 391 (holo KW 001000649 *), Myanmar, Mon State, Mawlamyine (Moulmain). Impatiens brandisii Hook. f. (1905) 29; W. J. Kress et al. (2003) 169, syn. nov. — Type: Brandis s. n. (lecto, designated here K K 000694710; isolecto L L 0388789), Myanmar, Tenasserim, at Thoungyeen. Terrestrial, annual, glabrous herb, 25 – 35 cm tall. Stem erect, 2 – 5 mm diam, laxly branched, green. Leaves spirally arranged but decussate at the lowest node. Petiole 8 – 22 mm long, up to 1 mm diam, cylindrical, green, glabrous. Lamina 30 – 70 by 17 – 34 mm, ovate, apex acute to acuminate, base attenuate, margin shallowly crenate with many long hairs near the base, adaxial green, abaxial greyish green, glabrous, without glands; lateral veins 4 – 6 pairs. Inflorescence subterminal, in 12 – 14 - flowered racemes. Peduncle 30 – 45 mm long, c. 1 mm diam, cylindrical, purple, glabrous. Flowers c. 20 by 13 mm, c. 8 mm deep, yellow. Pedicel 8 – 15 mm long, <1 mm diam, green, glabrous. Bracts 1.5 – 2 by c. 0.5 mm, lanceolate, apex acute, base cuneate, margin entire, green, glabrous, persistent. Lateral sepals 2, 1.5 – 2.5 by c. 0.5 mm, free, linear to lanceolate, curved, apex acute to obtuse, base cuneate, green, glabrous. Lower sepal 5 – 7 by 2 – 3 mm, 1.5 – 22 mm deep, navicular, apex acute and mucronate, base obtuse, yellow, quite pellucid, with red reticulate lines, green apex, distal part abruptly constricted into a narrow incurved spur, 5.5 – 7 mm long, yellow with green tip. Dorsal petal c. 4.5 by 1.5 – 2 mm, ovate, cucullate, apex acute to obtuse, base cordate to round, yellow, glabrous, abaxial midvein simple. Lateral united petals 16 – 17 mm long, free: the upper petals 1.5 – 2 by 0.5 – 1 mm, falcate, apex acute, base stipitate, yellow; the lower petals 10 – 12 by 6.5 – 7 mm, free, obliquely ovate, apex round, base cuneate, yellow, glabrous. Stamens: filaments 2.5 – 3 mm long, white; anthers pale yellow to white. Ovary 2.5 – 3 mm long, c. 1 mm diam, 5 - carpellate, green, glabrous. Fruits 8 – 9 mm long, 2 – 3 mm diam, fusiform, 5 - lobed, green, glabrous. Seeds 4 – 6, ellipsoid, c. 1.5 mm long, brown. Phenology — Flowering: August to November; fruiting: August to January. Distribution — Myanmar (Ayeyarwady Division, Bago Division, Chin State, Kayin State, Magway Division, Mon State, Rakhine State, Yangon Division), Thailand (Kanchanaburi Province). Ecology — Growing in shady areas along roadsides in cloud forests or mixed deciduous forests, abundant at localities, 60 – 900 m altitude. Other collections examined. MYANMAR, Wall. Cat. no. 4772 A (para K K 001039867), Pyay (Prome); Ayeyarwady Region, Allan s. n. (E E 00753094), Hinthada (Henzada) district, Kyangin Reserve, 22 Sept. 1908; Lace 3115 (K K 000694712,4 sheets), ibid., May 1908; Bago division, Rogers 5 (K 2 sheets), Tharrawaddy district, Myaung Chaung, west slope Pegu Yoma, 24 Nov. 1911; Rogers s. n. (E E 00753095), Tharrawaddy district, Thapau Reserve, alt. 500 ft, 28 Oct. 1912; Lacei 5 400 (K 2 sheets), Toungoo, Kyunpadaung Range near Kyaukkyi, 11 Aug. 1911; Lace 5034 (K), Toungoo district, Vujunpadaung Range, near Kyaukkyi, 11 Aug. 1911; Lace 5033 (E E 00753096, K), Bago division, Toungoo district, donyan chaung, pasrsura reserve, 19 Dec. 1909; Kurz 1872 (K), Pegu Yomah, east and west slope, 7 Jan. 1971; Chin State, Ling Shein Man & Ha Shein Aung 087435 (QBG QBG 61273), Ma Kyauk Ah Village area, Kanpetlet Township, alt. c. 5000 ft, 24 June 2011; Fujikawa, Srisanga, Maknoi, Tin Mya Soe, Ling Shein Man, Tun Tin & Law Shine 094311 (QBG QBG 70790), along foot path and unpaved new car road between Kanpetlet and Yelong Pan village, Kanpetlet Township, Natma Taung National Park, alt. 1260 – 1435 m, N 21 ° 13 ' 07.9 " E 94 ° 03 ' 46.4 ", 23 Aug. 2013. Notes — Hooker cited Wall. Cat. no. 4772 in the protologue of I. circaeoides. However, this number consists of two specimens; Wall. Cat. no. 4772 A (K 001039867) and Wall. Cat. no. 4772 B (K 001039868). We select the Wall. Cat. no. 4772 B (K 001039868) as the lectotype because it has an illustration by Hooker. This species is similar to I. tavoyana but differs in having a linear incurved spur vs a globose spur.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFF3FF93FCF6FA7EBBA80250.taxon	description	Plate 4 a. Impatiens circaeoides Wall. ex Hook. f. & Thomson; b. Impatiens rangoonensis Hook. f.; c. Impatiens tripetala Roxb. ex DC.; d. Impatiens porrecta Wall. ex Hook. f. & Thomson; e. Impatiens andersonii Hook. f.; f. Impatiens gongshanensis Y. L. Chen; g, h. Impatiens pulchra var. pulchra Hook. f. — Photos by: a – e, g, h. Saroj Ruchisansakun; f. Saw-Lwin. c. 4 by 3 mm, ovate, cucullate, pale green, apex acute and mucronate, base cordate, abaxial midvein simple or with a narrowly crescent-shaped crest. Lateral united petals 11 – 14 mm long, free: the upper petals c. 1 by 1 mm, orbicular, apex obtuse, base cuneate, white to pale green; the lower petals 8 – 12 by 5 – 7 mm, free, ovate, apex acute, base cuneate, pale pink with dark pink mark at the base. Stamens: filaments c. 2 mm long, white; anthers white. Ovary 2 mm long, <1 mm diam, 5 - carpellate, green, glabrous. Fruits 8 – 9 mm long, 2.5 – 3 mm diam, fusiform, 5 - lobed, green, glabrous. Seeds 10 – 13, c. 2 mm long, brown. Phenology — Flowering: July to August; fruiting: July to August. Distribution — Endemic to Myanmar (Rakhine State, Yangon Region). Ecology — Growing in shady areas near water canals along the roadside, 0 – 10 m altitude. Other collections examined. MYANMAR, Rakhine State, Ruchisansakun & Salwin 702 (L L 2071059, RAF, RANG), Thandwe district, N 18 ° 29 ' 39.8 " E 94 ° 22 ' 23.6 ", alt. c. 13 m, 30 July 2015; Yangon Region, Parkinson 14634 (K H 2015 / 00092), (Rangoon), Inyalake (Victoria Lake), 15 July 1932; M’Clelland s. n. (E E 00753093), Rangoon. Notes — The vegetative parts of I. rangoonensis are very similar to I. circaeoides but the flowers are distinctly different by virtue of its ovate sepals and long spur. Hooker (1905) did not designate a type. We found only one specimen, King 4772 B (K 000694745), with the name I. rangoonensis on the sheet. It matches the protologue, so we selected it as lectotype. Fig. 18 Impatiens tavoyana Benth. ex Hook. f. & view of flowers; c. fruit; d. lower lateral sepals; e. petals. — Drawn by Saroj Ruchisansakun.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFF1FF8CFCF6FF01B8D0024E.taxon	description	Phenology — Unknown. Distribution — Endemic to Myanmar (Tanintharyi Region). Ecology — Unknown. Notes — Impatiens tavoyana is morphologically very similar to I. circaeoides, I. rangoonensis and I. peguana, but differs in having a globose spur. The specimen Wall. Cat. no. 4773 (K 001039869) is designated as lectotype here as it is the only specimen we found.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFEEFF8CFFAFFC9CBE4E073B.taxon	description	Impatiens ternifolia Buch. - Ham. ex Hook. f. & Thomson (1860) 126, nom. nud. — Impatiens ternifolia Buch. - Ham. in Hook. f. (1904 a) 27, nom. nud., syn. in Hooker (1904 a) 27, 31. — Based on: Hb. Ham., Wall. Cat. 4752 B (K K 001039802), India, Assam State, Goalpara, 8 May 1862. Terrestrial, annual herb, up to 40 cm tall. Stem erect, more than 4 mm diam, unbranched, pilose towards apex. Leaves subopposite to spirally arranged. Petiole 20 – 60 mm long, 1.5 – 2 mm diam, glabrous to remotely pilose. Lamina 80 – 145 by 25 – 45 mm, elliptic to ovate to lanceolate, apex acuminate, base Map 17 Distribution of Impatiens rangoonensis Hook. f. (●), I. tavoyana Benth. ex Hook. f. & Thomson (●), I. tripetala Roxb. ex DC. (●) and I. trilobata Colebr. (●). attenuate, margin crenate with small teeth to slightly serrate, papyraceous, adaxial pilose, abaxial glabrous, with 2 – 5 pairs of short hairs near lamina base and 2 – many pairs of stipular glands at petiole base; lateral veins 8 – 12 pairs. Inflorescence axillary, erect, 2 – 10 - flowered raceme. Peduncle 1 – 2 (– 11) mm long, c. 1 mm diam, glabrous. Rachis 1 – 10 mm long, c. 1 mm diam. Flowers 20 – 30 mm long, 20 – 30 mm deep, purple. Bracts 1 – 2 by <1 mm, lanceolate, apex acute, base cuneate, margin entire, glabrous, persistent. Pedicel 10 – 18 mm long, <1 mm diam, glabrous to remotely pilose. Lateral sepals 2, free, 2 – 3 by 1 mm, ovate to lanceolate, apex, base cuneate, green, glabrous to pilose. Lower sepal 14 – 18 mm long, 15 – 20 mm deep, saccate, apex acuminate, purple with yellow mark, glabrous to remotely pilose abaxially, distal part abruptly constricted into an incurved spur, 5 – 7 mm long, slightly bilobed. Dorsal petal 9 – 12 by 10 – 12 mm, broadly obovate to broadly elliptic, cucullate, apex emarginate, base round, purple, pilose, abaxial midvein with an obtuse crest or an acute appendage, 2 – 3 mm long. Lateral united petals 22 – 25 mm long, free: the upper petals 9 – 10 by 8 – 9 mm, broadly ovate to broadly obovate, apex round to truncate, base cuneate, purple; the lower petals 14 – 15 by 8 – 10 mm, free, ovate to elliptic, apex round and slightly obliquely emarginate, purple, glabrous, base with yellow auricle. Stamens: filaments 5 – 6 mm long. Ovary c. 5 mm long. Fruits 15 – 16 mm long, 2 – 3 mm diam, fusiform, glabrous. Seeds unknown. Phenology — Flowering: July to October. Distribution — Myanmar (Kachin State, Mandalay division, Shan State), India (Assam State), Bangladesh. Ecology — Growing in organic matter on limestone in open areas, 1300 – 1600 m altitude. Other collections examined. MYANMAR, Kachin State, Toppin 2680 (K H 2015 / 00092 154, 155, 156), Sinlum, 1372 – 1524 m, 29 Sept. 1911; Toppin 2779 (K K 000694906, K H 2015 / 00092 157, 158, 159, 160), Sinlum, 24.284120, 97.382417, between Momauk and Balong Gatuang, N 24 ° 17 ' 02.8 " E 97 ° 22 ' 56.7 "; Murata, Kobayashi, Hayami & Takashima 040890 (MBK MBK 0140389), 1 – 4 miles from Shinbweyan towards Pansaung. N 26 ° 42 ' 26 " – 43 ' 56 " E 96 ° 11 ' 25 " – 12 ' 33 ", alt. 190 – 270 m, forest margin, 6 Dec. 2005; Murata, Kobayashi, Hayami & Takashima 040884 (QBG QBG 61256), ibid., 6 Dec. 2005; Mandalay Region, Ruchisansakun & Thet Yu Nwe 758 (L L 2071186, MAND, RAF), N 22 ° 54.13 ' E 96 ° 22.62 ', alt. 1297 m, 22 Nov. 2015. Notes — Impatiens tripetala is morphologically similar to I. trilobata but differs in having a short or inconspicuous peduncle <3 mm, while I. trilobata has a long peduncle exceeding 10 mm. Impatiens tripetala is characterized by a large number of morphologically variable features. Leaves are mostly decussate, yet sometimes spirally arranged especially along the upper part of the stem. This variation can be found even at the population level, like in Toppin 2680.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFEEFF8DFCF6F90ABB43074D.taxon	description	Phenology — Flowering: June to November; fruiting: July to November. Distribution — Myanmar (Chin State, Kachin State, Mandalay Region, Sagaing Division), Bangladesh (Sylhet Division), India (Arunachal Pradesh State, Assam State, Sikkim State, West Bengal State). Ecology — Growing in semi-evergreen forest, along the stream, 600 – 1200 m altitude. Other collections examined. MYANMAR, Chin State, Ling Shein Mang 093093 (QBG QBG 70782), around Kyat Chan village, Kanpetlet, Natma Taung National Park, alt. 1700 m, 13 July 2013; Kachin State, Buchanan s. n. (K), Myitkyina district, Namma Hopii Valley, 450 ft, Oct. 1909; Buchanan 1 (K H 2015 / 00092 135), Myitkyina district, Trinton, alt. 450 ft, 30 Nov. 1910; Buchanan s. n. (E E 00752744), ibid., Oct. 1909; Murata, Kobayashi, Hayami & Takashima 040847 (QBG QBG 61254), west of Lamon Village, 4 miles north of Tanaing, N 26 ° 25 ' 28 " E 96 ° 41 ' 37 ", alt. 195 – 200 m, 2 Dec. 2005; Mandalay Region, F. S. (RANG 5097), Kadu, 7 Jan. 1960; Anonymous s. n. (RANG 011269), ibid., Sagaing division; Buchanan 2 (K), Kale district, Nam- maw village, 18 Oct. 1908; Lace 5526 (E E 00752745, K H 2015 / 00092 134), Katha district, Bilumyo Reserve, 800 ft, 9 Nov. 1911. Note — Impatiens trilobata can be easily distinguished by its decussate leaves, long peduncles, and saccate lower sepal. Impatiens trilobata is similar to I. tripetala but differs in having a longer peduncle.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFEFFF8EFFAFF985BADA03AE.taxon	description	Impatiens kingdon­wardii Nob. Tanaka & T. Sugaw. in Tanaka et al. (2015) 90. — Type: Murata et al. 024566 (holo MBK not seen; iso QBG 78496; RAF not seen, TI not seen), Myanmar, Chin State, Kanpetlet Township, at the foot of Mt Victoria, Natma Taung National Park, alt. c. 1800 – 2000 m, 2 Dec. 2002. Annual herb, 20 – 100 cm tall. Stem erect, 0.5 – 6 mm diam, unbranched to moderately branched, green to purple, pilose to glabrous, but densely pilose towards apex. Leaves spirally arranged. Petiole 30 – 60 mm long, 1 – 1.5 mm diam, red to dark red, glabrous to sparsely pilose, with c. 1.5 mm long dark red to black hairs. Lamina 50 – 180 by 30 – 80 mm, ovate to elliptic to oblong to oblanceolate, apex acute to acuminate, base cuneate to attenuate, margin shallowly serrate to shallowly crenate, green on both sides, reddish on midrib, adaxial sparsely to densely pilose, abaxial glabrous to remotely pilose, with 4 – 6 long hairs near lamina base, 5.5 – 6 mm long; lateral veins 8 – 13 pairs. Inflorescence axillary, pendulous, 2 – 4 (– 9) - flowered raceme. Peduncle 1.5 – 5 (– 26) mm long, c. 1 mm diam, pink to red, glabrous to densely pilose. Rachis 2 – 5 (– 16) mm long, c. 1 mm diam, glabrous to densely pilose. Flowers 20 – 24 mm long, 15 – 34 mm deep, purple to pink, rarely white or yellow. Bracts 1 – 5 (– 9) by 1 – 1.5 (– 3) mm, linear to lanceolate to elliptic to oblanceolate, apex acute and mucronate, base cuneate, margin entire, red to pink, glabrous to pilose, persistent, rarely caducous. Pedicel 10 – 20 mm long, slender, pink, glabrous to pilose. Lateral sepals 2, 9.5 – 15 by 10 – 15 mm, free, orbicular to broadly elliptic, cucullate, completely covering the flower in young stage, apex round and mucronate, base round, pink, densely pilose. Lower sepal 15 – 20 mm long, 10 mm deep excluding spur, saccate, apex mucronate, pink with white base, densely pilose, base abruptly constricted into an incurved spur with spiral end, 5 – 13 mm long. Dorsal petal 10 – 13 by 7 – 8 mm, suborbicular, cucullate, light pink, adaxial pilose, abaxial midvein with a narrow crest. Lateral united petals 20 – 25 mm long, connate: the upper petals ovate, connate to each other in the upper part forming a helmet-like structure, the structure then blocked the floral entrance, apex with 2 yellow club-shaped protuberance, base cuneate, bright purple; the lower petals 10 – 14 by 6 – 8 mm, broadly obovate, apex round to obtuse, bright purple with white mark at the centre, glabrous. Stamens: filaments 3 – 4 mm long, glabrous; anthers apex obtuse. Ovary 2.5 – 4 mm long, fusiform, 5 - carpellate, pilose. Fruits 8 – 11 mm long, 5 – 6 mm diam, short fusiform to globose, pink, pilose to densely pilose; fruiting pedicels 15 – 22 mm long. Seeds unknown. Phenology — Flowering: June to December; fruiting: October to December. Distribution — Endemic to Myanmar (Chin State). Ecology — Growing along streams and in shady, wet places, 800 – 1600 m altitude. Other collections examined. MYANMAR, Chin State, Kingdon­Ward 22664 (para BM), Kanpetlet Township, Mt Victoria; Maung & Win 024336 (para MBK *, RAF *, TI *), Kanpetlet Township, Mt Victoria, 17 Sept. 2002; Tanaka & Yukawa 081231 (para MBK, RAF), Kanpetlet Township, along the trail to NE of Kanpetlet, via Yelong Pan village, Natma Taung National Park, alt. 1400 – 1600 m, N 21 ° 13 ' 5 " E 94 ° 3 ' 37.6 " – 5 ' 41.4 ", 26 June 2009; Matsumoto s. n. (para TNS-spirit), Kanpetlet Township, near old Kanpetlet Village, Natma Taung National Park, 31 Aug. 2012; Fujikawa et al. 090043 Map 18 Distribution of Impatiens kingdon­wardii Nob. Tanaka & T. Sugaw. (●), I. xanthina H. F. Comber (●), I. fugongensis K. M. Liu & Y. Y. Cong (●) and I. striolata Hook. f. (●). (QBG QBG 70758), between Kanpetlet and Oak Pho Village, 3 Dec. 2012; Ling Shein Man 087636 (QBG QBG 78495), Kanpetlet Township, Old Town area, alt. c. 1750 m, 23 Oct. 2011; U Mg Gale­ 2 5761 (RAF RAF 8773 / 5, 4 sheets), Kanpetlet Township, E Saken, alt. 5700 ft, 15 Sept. 1956; Law Shein 091602 (QBG QBG 70762), Natma Taung National Park, 3 Oct. 2012; Tanaka & Yukawa 081231 (QBG QBG 78502), Natma Taung National Park, along the trail to NE of Kanpetlet, via Yelong Pan village, N 21 ° 13 ' 5.6 " – 5.4 " E 94 ° 3 ' 37.6 " – 5 ' 41.4 ", alt. 1400 – 1600 m, 26 June 2009; Ling Shein Mang 092931 (QBG QBG 70779), Natma Taung National Park, around Kanpetlet, alt. 1700 m, 27 June 2013; Fujikawa et al. 090549 (QBG QBG 70761), around the entrance, N 21 ° 12 ' 10.5 " E 94 ° 01 ' 47.1 ", alt. 1945 m, 4 Dec. 2012; Fujikawa et al. 094896 (QBG QBG 70797), Natma Taung National Park, c. 10 miles from Mindat between Mindat and Matupi (Mindat-Matupi road), Mindat Township, alt. c. 1800 m, 1 Sept. 2013; Ling Shing et al. 024303 (MBK K 0049683), Mt Victoria, Natmataung National Park, 31 July 2002. Note — Impatiens kingdon­wardii is one of the most distinct species in Myanmar, due to its large, densely pilose lateral sepals and connate upper lateral petals that closes the floral entrance for visitors. The fruit is also very distinct from other species, due to the globose shape (as opposed to short fusiform).	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFECFF8EFCF6FDE1BEBB0610.taxon	description	Phenology — Flowering: October; fruiting: October. Distribution — Myanmar (Kachin State), China (Yunnan State), India (Gogoi et al. 2015 b). Ecology — Growing in open areas in mixed deciduous forest. Other collections examined. MYANMAR, Kachin State, Armstrong et al. 756 (NY NY 2648696 *), Putao district, Naungmung Township, buffer zone of Hkakabo Razi National Park, between Hton Wan rest house and Khe Dam rest house, N 27.5298 ° E 98.0437 °, alt. 2008 m, 17 Oct. 2015; Saw­Lwin KSL 1060 A (L), ibid. Note — Impatiens fugongensis is morphologically similar to I. xanthina, but differs in having a pilose stem, pilose elliptic leaves, and a bucciniform lower sepal.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFECFF8EFFAFFCBFBF030353.taxon	description	Terrestrial, annual herb, 5 – 23 cm tall. Stem decumbent, up to 3 mm diam, richly branched in the decumbent part, green, glabrous. Leaves spirally arranged, congested on apex. Petiole sessile – 7 mm long, glabrous to remotely pilose. Lamina 55 – 65 by 10 – 15 mm, narrowly elliptic to narrowly obovate, apex acute, base cuneate, margin serrate, adaxial green, abaxial pale green, glabrous to remotely pilose on both sides, with 1 – 3 pair (s) of clavate glands along the margin near lamina base, up to 2 mm long; lateral veins 8 – 11 pairs. Inflorescence axillary, erect, 1 – 3 - flowered raceme. Peduncle 13 – 20 mm long, green, pilose. Rachis absent – 2 mm long, pilose. Flowers 10 – 15 mm long, 7 – 10 mm deep, yellow with dark brown mark at the centre. Bracts 3 – 4 by 1 mm, linear to lanceolate, apex acute, base cuneate, margin entire, pilose, caducous to persistent. Pedicel c. 8 mm long, <1 mm diam, densely pilose. Lateral sepals 2, 4 – 5 by c. 2.5 mm, free, triangular-ovate, apex acute, base truncate, green, glabrous. Lower sepal 7 – 8 mm long, 1.5 – 2 mm deep, navicular, apex acute and mucronate, yellow, glabrous, dorsal part abruptly constricted into a narrow incurved spur with spiral end, 22 – 25 mm long. Dorsal petal c. 6 by 4 – 8 mm, ovate, cucullate, apex round, base round, yellow with dark brown mark at the base, pilose along the midrib, abaxial midvein with a slight crest at the base. Lateral united petals 9 – 14 mm long, free: the upper petals 5 – 6 by 3 – 4 mm, elliptic, apex round, base cuneate, yellow with dark brown marks at the base; the lower petals 8 – 10 by 5 – 6 mm, free, elliptic to ovate, apex obtuse, yellow, glabrous. Stamens: filaments c. 3 mm long; anthers obtuse, yellow; pollen yellow. Ovary c. 3 mm long, c. 1 mm diam, green, glabrous. Fruits 6 – 10 mm long, 3 – 4 mm diam, fusiform, 5 - lobed, green, glabrous; fruiting pedicels c. 7 mm long. Seeds unknown Phenology — Flowering: May to December; fruiting: September to December. Distribution — Myanmar (Kachin State), China (Yunnan Province), India (Arunachal Pradesh State). Ecology — Growing in mossy places along streams in evergreen forest, 3000 – 3500 m altitude. Other collections examined. MYANMAR, Kachin State, Kingdon­Ward 13452 (BM), Nam Tamai valley, N 28 ° E 97 ° 40 ', alt. 3000 – 4000 ft, 10 Nov. 1937; Kingdon­Ward 6682 (K), Nam Tamia, alt. 3500 ft, 3 May 1926; Farrer 1833 (RAF 2 sheets), Nyitadi, alt. 5000 – 7000 ft, 18 Aug. 1920; Armstrong et al. 1199 (NY 2649102 *), Putao district, Naungmung Township, Hkakabo Razi National Park, between Aliaung village and Ran Nam rest house, N 27.7071 ° E 98.0754 °, alt. 1117 m, 1 Nov. 2015; Saw­Lwin KSL 1052 (L, MAND, RAF), ibid.; Kingdon­Ward 20798 (BM), the north triangle, Hkinkum, alt. 3000 – 4000 ft, 7 May 1953. Note — Impatiens xanthina has small, bright yellow flowers. This colour, in combination with the arrangement in a 1 – 3 - flowered raceme, is rather uncommon in Impatiens. Specimen Saw­Lwin 1052 (L) approaches I. xanthina var. pusilla Y. L. Chen (1978: 49) in its short stem but has larger leaves and flowers. So far, I. xanthina var. pusilla is not found in Myanmar.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFECFF88FCF6F820B8B10241.taxon	description	Impatiens striolata Hook. f. (1905) 28, 33. — Type: Hooker & Thomson 91 (lecto, designated here K K 000694624; isolecto P P 04543679), India, Khasia Hills, alt. 4000 – 5000 ft (1524 m). Annual herb, 20 – 40 cm tall. Stem erect, seldom decumbent in the lower part, up to 4 mm diam, unbranched to rarely branched, red, glabrous. Leaves spirally arranged. Petiole 11 – 30 mm long, c. 1 mm diam, glabrous. Lamina 37 – 60 by 17 – 30 mm, ovate to elliptic, apex acute to acuminate, base attenuate to cuneate, margin serrate to slightly serrate, adaxial remotely pilose, green with red margin, abaxial glabrous, with one pair of glands on each side of margin near lamina base; lateral veins 6 – 9 pairs. Inflorescence axillary, erect, 1 - or 2 - flowered raceme. Peduncle 12 – 17 mm long, reddish green, glabrous. Rachis 20 mm long, red, glabrous. Flowers 25 – 31 mm long, 27 – 29 mm deep, yellow with red stripes and red spur. Bracts 2 – 3 by 1 mm, linear to narrowly lanceolate, apex acute, base cuneate, margin entire, without glands, red, glabrous, persistent. Pedicel 10 – 12 mm long, red, glabrous. Lateral sepals 2, 2 – 3.3 by 1.3 – 1.5 mm, free, ovate to lanceolate, apex acuminate, base obtuse, red, glabrous. Lower sepal 13.5 – 17 mm long, 7 – 10 mm deep, bucciniform, apex acute and mucronate, yellow to orange with red stripes, glabrous, gradually narrowed into an incurved spur, strongly incurved at half the length, tip straight, Fig. 19 Impatiens putaoensis Y. H. Tan, S. S a. Habit; b. front view of flower; c. lateral d. lateral sepals; e. lower sepal; f. dorsal petal petals. — Drawn by Saroj Ruchisansakun. 18 – 20 mm long, red with yellow tip. Dorsal petal 11.5 – 12 by 10.5 – 12 mm, broadly ovate to broadly elliptic, apex emarginate and mucronate, base obtuse to truncate, yellow with deep red near the midrib, glabrous, abaxial midvein with a keel-shaped crest, 1 – 1.5 mm long. Lateral united petals 25 – 28 mm long, free: the upper petals 11 – 13 by 7 – 9 mm, obovate, apex acute to acuminate, base cuneate, yellow with red marks near the base; the lower petals 14 – 22 by 7.5 – 8 mm, free, ovate, apex acute to obtuse, base with distinct auricles, 1.5 mm long, round, glabrous. Stamens: filaments c. 5.2 mm long; anthers obtuse. Ovary c. 5 mm long. Fruits c. 14 mm long, 3 mm diam, fusiform, glabrous. Seeds unknown. Phenology — Flowering: July to September; fruiting: September. Distribution — Myanmmar (Chin State), India (Asssam State). Ecology — Growing along streams in exposed areas of evergreen forest, 1500 – 2400 m altitude. Other collections examined. MYANMAR, Chin State, Mu Mu Aung & Law Shine 092642 (QBG QBG 70773), along the roadside between 70 and 84 miles (Mindat-Matupi car road), Matupi Township, near the Natma Taung National Park, alt. 2225 m, N 21 ° 36.007 ' E 93 ° 39.313 ', 22 July 2013; Funakoshi et al. 085231 (QBG QBG 61271), 14 miles towards Madupi from Mindat, alt. 2355 m, N 21 ° 23.894 ' E 93 ° 45.901 ', 9 Sept. 2011; Fujikawa et al. 094892 (QBG QBG 70796), c. 10 miles from Mindat between Mindat and Matupi (Mindat-Matupi road), Mindat Township, Natma Taung National Park, alt. c. 1800 m, 1 Sept. 2013. Notes — Impatiens striolata is most similar to I. putaoensis but differs in having bright yellow flowers and a glabrous stem. It is also similar to species numbered 56 – 65 below but can be easily distinguished by its acute to acuminate apex of the upper lateral petals. Hooker (1905) mentioned that it was found in the Khasia Hills, at 4000 – 5000 ft altitude, but without any other detail about type specimens. However, Hooker annotated two specimens as I. striolata: Hooker & Thomson 91 (K 000694624) and Hooker & Thomson 2026 (K 000694625). We select K 000694624 as lectotype because it is provided with a clear illustration and a dissected flower, and its locality matches the protologue.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFEAFF88FFAFFC9DBE7A01B4.taxon	description	Impatiens putaoensis Y. H. Tan et al. in Yang et al. (2017) 107. — Type: Myanmar Exped. 105 (holo HITBC *; iso KUN *, RAF *), Myanmar, Kachin State, Putao, Ghatu village, N 27 ° 43 ' 28.99 " E 97 ° 51 ' 9.47 ", alt. 590 m, 25 Nov. 2014. Terrestrial, annual herb, 24 – 33 cm tall. Stem erect, c. 3 mm diam, simple, green, densely pilose. Leaves spirally arranged. Petiole 12 – 25 mm long, 1.5 – 2 mm diam, densely pilose, with 3 or 4 long hairs on each side of the petiole. Lamina 55 – 70 by 25 – 30 mm, elliptic, apex acute to acuminate, base cuneate, margin slightly serrate, adaxial green, abaxial pale green, pilose on both sides, with 1 or 2 long hairs on each side along the midrib near lamina base; lateral veins 4 or 5 pairs. Inflorescence axillary to subterminal, erect, 3 – 5 - flowered raceme. Peduncle 20 – 25 mm long, c. 1.5 mm diam, green, densely pilose, with long white hairs. Rachis 4 – 6 mm long, c. 1 mm diam. Flowers c. 30 mm long, c. 25 mm deep, white to greenish white. Bracts 5 – 6 by 1 mm, linear, apex acute, base cuneate, margin entire, without gland, green, pilose, persistent. Pedicel 17 mm long, <1 mm diam, green, densely pilose with long white hairs. Lateral sepals 2, 15 – 18 by 8 mm, free, narrowly ovate, apex acute and mucronate, base obtuse, pale green, glabrous. Lower sepal 15 – 20 mm long, 10 – 15 mm deep, navicular, apex acuminate, white to pale green, glabrous, distal part gradually narrowing into an incurved spur, 25 – 30 mm long. Dorsal petal 18 by 6 mm, narrowly elliptic, slightly cucullate, apex acute and mucronate, base obtuse, pale green, glabrous, abaxial midvein with a narrow crest, c. 1 mm wide, green. Lateral united petals 22 – 28 mm long, free: the upper petals 12 – 13 by 6 – 7 mm, elliptic, apex acute, base cuneate, white; the lower petals 14 – 15 by 6 mm, free, elliptic to elliptic-obovate, apex acute, base with distinct auricles, 1.5 – 2 mm high, white with yellow auricles, glabrous. Stamens: filaments c. 7 mm long, white to pale green; anthers obtuse, pale yellow. Ovary c. 6 mm long, c. 1 mm diam, green, glabrous. Fruits 15 mm long, 5 mm diam, fusiform, green, glabrous; fruiting pedicel up to 16 mm long. Seeds unknown. Phenology — Flowering: October to November; fruiting: October to February. Distribution — Myanmar (Kachin State), only known from the type locality. Ecology — Growing in an open mossy area of evergreen forest. Other collection examined. MYANMAR, Kachin State, Saw­Lwin KSL 1021 (L, MAND, RAF), Hkakabo Razi National Park, 17 Oct. 2015. Note — Impatiens putaoensis is similar to I. porrecta but has white to greenish white flowers and the upper lateral petals have an acute apex.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFEAFF89FCF6FE9ABBAE047A.taxon	description	Impatiens porrecta Wall. ex Hook. f. & Thomson (1860) 116,138. — Impatiens porrecta Wall. (1831) 245, nom. nud.; Hook. f. (1875) 472; (1904) 29, 31; Toppin (1920) 352. — Type: Wall. Cat. no. 7275 (lecto, designated here K K 001127061), Sylhet. Impatiens bella Hook. f. & Thomson (1860) 116,138; Hook. f. (1875) 458, syn. nov. — Type: Griffith s. n. (lecto, designated here K K 000694775), Khasia. Terrestrial, annual herb, 10 – 20 cm tall. Stem erect to procumbent, 1 – 2.5 mm diam, branching in the decumbent part, densely pilose especially towards apex, sometimes nearly glabrous on the lower part. Leaves spirally arranged. Petiole 8 – 25 mm long, 1 – 1.5 mm diam, densely pilose with 1 or 2 pair (s) of glandular hairs on petiole. Lamina 21 – 45 by 10 – 28 mm, ovate to elliptic to obovate, apex acute to obtuse, base obtuse to cuneate to attenuate, margin serrate to cuneate, abaxial densely to remotely pilose, adaxial remotely pilose and densely pilose at veins to glabrous, with or without 1 pair of glands near lamina base; lateral veins 5 – 8 pairs. Inflorescence axillary, erect, 1 – 3 - flowered raceme. Peduncle 7 – 35 mm long, c. 1 mm diam, densely pilose. Rachis absent – 2 mm long, c. 1 mm diam, densely pilose. Flowers 15 – 25 mm long, 20 – 40 mm deep, yellow. Bracts 2 – 4 by 1 – 2 mm, linear to lanceolate, apex acute, base cuneate, margin entire, densely pilose, persistent. Pedicel 10 – 15 mm long, <1 mm diam, pilose to densely pilose. Lateral sepals 2, 6 – 9 by 2.5 – 5 mm, free, ovate to narrowly ovate, apex acute to acuminate, base obtuse to cuneate, pilose to densely pilose. Lower sepal 9 – 15 mm long, 6 – 15 mm deep, bucciniform, apex acuminate, with dark red reticulated lines, pilose to remotely pilose, distal part rapidly constricted into a curved to incurved spur, 17 – 30 mm long. Dorsal petal 9.5 – 12 by 8 – 11 mm, elliptic to orbicular, cucullate, apex round to emarginate, base obtuse, pilose, abaxial midvein with a crescent-shaped to a keel-shaped crest. Lateral united petals 16.5 – 20 mm long, free: the upper petals c. 8 by 7 mm, obovate, apex truncate, base cuneate; the lower petals c. 10 by 6 – 8 mm, free, ovate, apex obtuse, base auricled. Stamens c. 5 mm long. Ovary 5 mm long, c. 1 mm diam, pilose. Fruits 12 mm long, c. 1 mm diam, fusiform, pilose. Seeds unknown. Phenology — Flowering: August to November; fruiting: October to November. Distribution — Myanmar (Chin State, Kachin State); India (Assam State, Manipur State, Meghalaya State); Laos (Muang Curm). Ecology — Growing along streams or in humid areas of evergreen forest, 600 – 1600 m altitude. Other collections examined. INDIA, Lobb s. n. (syn K), Khasia; Hooker & Thomson 92 (syn of Impatiens bella K, L L 2326061, L L 2326062, L L 2326063, MPU 019010 *), Khasia, near to Kalapane, alt. 4000 – 5000 ft, 6 Aug. 1850. – MYANMAR, Chin State, Venning 84 (K), Chin Hills, Minkin, 29 July 1910; Kachin State, Toppin 4359 (K 2 sheets), Kachin Hills, Kao Hka Gorge and Ngau Hka; Lace 6043 (E E 00752854, E E 00752855, E E 00752856, K), Myitkyina district, Wabaukyer, dongyakyer, 1500 – 2500 ft, 20 Nov. 1912; Kingdon­Ward 20780 (BM), the north triangle, Hkinkum, alt. 4000 ft, 6 May 1953; Kingdon­Ward 21131 (BM), ibid., 9 July 1953; Kingdon­Ward 21227 (BM), ibid., 3 Aug. 1953; Kingdon­Ward 7315 (K), N 27 ° 45 ' E 97 ° 55 ', alt. 5000 – 6000 ft, 19 Aug. 1926. Notes — In the protologue, Hooker & Thomson (1860) mentioned that I. porrecta is similar to I. bella but that it differs in having multiple flowers on one peduncle (instead of one flower in I. bella). However, we found that this character is variable within I. porrecta, and no other characters provide a distinction between I. bella and. I. porrecta. The lateral sepals also vary from glabrous to densely pilose. Map 19 Distribution of Impatiens putaoensis Y. H. Tan, S. S. Zhou & B. Yang (●), I. porrecta Wall. ex Hook. f. & Thomson (●) and I. erubescens Dunn (●). Impatiens porrecta is also morphologically similar to I. khasiana and I. putaoensis but differs in having yellow instead of purple or white flowers. The specimen Wall. Cat. no. 7275 (K 001127061) is designated as lectotype of I. porrecta as it is the only specimen we found. It matches the protologue and was determined by Hooker as I. porrecta Wall. Hooker & Thomson (1860) described I. bella as glabrous and listed the specimens that Hooker & Thomson collected from Kalapane. They mentioned at least three specimens for I. bella in the protologue. We designate the specimen Griffith s. n. (K 000694775) as lectotype because it is in good condition and completely matches the protologue	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFEBFF89FFAFFAC8BE4C03E0.taxon	description	free, ovate, apex obtuse, base with distinct auricle, c. 2 mm wide, pink with yellow auricle, glabrous. Stamens 7 mm long. Ovary 4 – 6 mm long. Fruits 14 – 15 mm long, 4 mm diam, fusiform, glabrous. Seeds c. 1 mm long. Phenology — Flowering: August to January; fruiting: January. Distribution — Endemic to Myanmar (Kachin State). Ecology — Altitude 500 m. Other collection examined. MYANMAR, Kachin State, Kingdon­Ward 7302 (K), Frontier of Tibet, Valley of the Lam Tawai, N 28.0 ° E 97.35 °, 16 Aug. 1926. Note — Impatiens erubescens can be distinguished by red pilose stems, glabrous lanceolate to elliptic leaf lamina and pink flowers. It is very similar to I. delicata but this species has a glabrous stem. It is also similar to I. khasiana but differs in having glabrous narrower leaf lamina and glabrous peduncles. We found two sheets of Toppin 4362. The K 000694678 include a dissected flower, colour illustration, and handwriting, so we selected it as a lectotype.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFEBFF89FCF6FD7DBF570645.taxon	description	Impatiens khasiana Hook. f. (1905) 27, 33; Vivek. et al. (1997) 111, 162; Odyou et al. (2015) 85. — Impatiens bella var. major Hook. f. (1875) 459. — Type: Hooker & Thomson s. n. (lecto, designated in Odyou et al. (2015) K K 000694831; isolecto K K 000694829, K K 000694832), India, Meghalaya, Khasi Hills, 5000 – 6000 ft, 1850. Annual herb, 20 – 50 cm tall. Stem erect to decumbent in the lower part, simple to branched in the decumbent part, pilose to densely pilose. Leaves spirally arranged. Petiole 10 – 45 mm long, pilose to densely pilose, with 1 – 3 pair (s) of glandular hairs. Lamina 40 – 140 by 21 – 50 mm, ovate to elliptic, apex acute to acuminate, base cuneate to attenuate, margin serrate to crenate with small teeth, adaxial pilose, abaxial remotely pilose, with 2 – many pairs of glandular hairs on margin near lamina base and 1 – 3 pair (s) on petiole, up to 2 mm long; lateral veins 6 – 11 pairs. Inflorescence axillary to subterminal, erect, (1 - or) 2 - or 3 - flowered raceme. Peduncle 10 – 35 mm long, densely pilose. Rachis 2 – 11 mm long. Flowers 20 – 35 mm long, 27 – 40 mm deep, pink. Bracts (3 –) 6 – 7 by 1 – 3.5 mm, narrowly ovate to lanceolate to narrowly lanceolate to elliptic, apex acute, base cuneate to obtuse, margin entire, without glands, pilose. Pedicel (9 –) 15 – 17 mm long, pilose. Lateral sepals 2, 6 – 12 by 2 – 7 mm, free, obliquely ovate, angular on one side, apex acuminate, base cuneate, white with green tip, pilose. Lower sepal 10 – 23 mm long, 9 – 16 mm deep, bucciniform, apex acuminate and mucronate, with dark red reticulate lines, glabrous or remotely pilose, distal part gradually narrowed into an incurved spur, 15 – 22 mm long. Dorsal petal 13 – 18 by 9 – 16 mm, broadly ovate to elliptic, cucullate, apex acuminate to acute, base obtuse, pink, pilose, abaxial midvein with a crescent-shaped crest, c. 2 mm wide. Lateral united petals 26 – 30 mm long, free: the upper petals 9 – 12 by 6 – 10 mm, obovate, apex truncate, base cuneate, pink; the lower petals 18 – 20 by 8 – 10 mm, free, obliquely elliptic, apex acute to obtuse, with distinct auricles, glabrous. Stamens: filaments 5 – 6 mm long. Ovary 6.5 – 7 mm long, c. 1.5 mm diam, glabrous. Fruits c. 15 mm long, 3 mm diam, long fusiform, glabrous. Seeds unknown.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFE8FF8AFFAFFB61B9D300DC.taxon	description	Phenology — Flowering: May to November; fruiting: July to November. Distribution — Myanmar (Kachin State, Mandalay Division), India (Arunachal Pradesh State) (Borah et al. 2015). Ecology — Unknown, 1200 – 1800 m altitude. Other collections examined. MYANMAR, Kachin State, Lace 5335 (K), Kadu, alt. 4000 ft, 10 July 1911; Buchanan 5 (K), Myitkyina district, Suma Hills, 30 Nov. 1910; Buchanan 5566 (K), ibid., 1 Nov. 1911; Mandalay Region, Lace 6006 (E E 00752949, E E 00752950, K H 2015 / 00092 139), Ruby mines district, 25 Oct. 1912. Note — The photos in Borah et al. (2015: 34) show a glabrous stem and peduncle, but we do not have access to the photographed specimens. In order to fully understand the morphological variation of this species, a more thorough study is needed.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFE8FF8BFCF6FE69B8A30516.taxon	description	Terrestrial, annual herb, 13 – 28 cm tall. Stem erect to decumbent in the lower part, 3.2 – 5 mm diam, unbranched to rarely branched at the decumbent part, pilose to densely pilose towards apex. Leaves spirally arranged. Petiole 11.5 – 26 mm long, 1 – 1.5 mm diam, densely pilose, sometimes with 1 or 2 pair (s) of glandular hairs on petiole. Lamina 45 – 110 by 27 – 45 mm, elliptic to elliptic-obovate, apex acute to acuminate, rarely round, base attenuate, margin crenate to slightly serrate, densely pilose on both sides, with 1 or 2 pair (s) of long hairs on the margin near lamina base; lateral veins 7 or 8 pairs. Inflorescence axillary, erect, 1 - or 2 - flowered raceme. Peduncle 7 mm long, 1 mm diam, densely pilose. Rachis 4 – 4.5 mm long, c. 1 mm diam, densely pilose. Flowers 23 mm long, 23 mm deep, pink. Bracts 2 – 2.5 mm long, linear, apex acute, base cuneate, margin entire, without glands, densely pilose, persistent. Pedicel 12.5 – 16 mm long, 0.5 mm diam, densely pilose. Lateral sepals 2, 9 – 11 by 4 – 5 mm, free, ovate to elliptic, apex acuminate to acute and mucronate, base obtuse to cuneate, densely pilose. Lower sepal 3.5 – 19 mm long, 8 – 14 mm deep, bucciniform, apex acuminate and mucronate, densely pilose, distal part abruptly constricted into an incurved spur, sometimes with spiral end, 21 – 26 mm long. Dorsal petal 10 – 12.5 by 7 – 8 mm, obovate, cucullate, apex emarginate, base obtuse to cuneate, pink, densely pilose on the midrib, abaxial midvein with an acute appendage, 2.5 – 4 mm Map 20 Distribution of Impatiens khasiana var. khasiana Hook. f. (●), I. khasiana var. toppinii (Dun) Ruchis. & Suksathan (●), I. kamtilongensis Toppin (●) and I. lacei Hook. f. (●). long. Lateral united petals 18 – 25 mm long, free, pink: the upper petals 12.5 – 14 by 6 – 7 mm, broadly oblanceolate, apex truncate, base cuneate, pink; the lower petals 10 – 13.5 by 7 – 10 mm, free, ovate to broadly elliptic, apex round, base with distinct auricle, rounded, pink, glabrous. Stamens: filaments 5 – 5.5 mm long. Ovary 5 – 5.5 mm long, 1 – 1.5 mm diam, glabrous to scabrous. Fruits 14.5 mm long, 4 mm diam, long fusiform, glabrous to scabrous, green; pedicels at fruiting stage c. 15 mm long. Seeds unknown. Phenology — Flowering: December; fruiting: December. Distribution — Endemic to Myanmar (Kachin State). Ecology — Growing in wet and shady areas of evergreen forest, 500 – 650 m altitude. Notes — Impatiens kamtilongensis is very similar to I. khasiana and I. porrecta but differs in having a dorsal sepal with an acute appendage, instead of a crescent-shaped crest or keel-shaped crest, on the abaxial side of the dorsal petal. Although Toppin (1920) mentioned that I. khasiana and I. kamtilongensis have different flower colours, dried flowers on the type specimens of both taxa are pink. In the description of I. kamtilongensis, Toppin (1920) states “ Flores pallide sufflavi vel fere albi ” (flowers yellowish or almost white), but this possibly refers to the colour of the lower sepal, not to the colour of the whole flower. Akiyama et al. (1996), Chen et al. (2007) and Chinh et al. (2015) mention I. kamtilongensis as having yellow flowers, hence, we suspect that the specimens they refer to do not belong to this taxon in our sense. Three sheets of the type specimen of I. kamtilongensis, Toppin 4275, were found. We select K 000694653 as a lectotype because it is a complete specimen with dissected flowers.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFE9FF8BFFAFFB27BFC80356.taxon	description	Impatiens lacei Hook. f. (1910 b) t. 2912; W. J. Kress et al. (2003) 170. — Type: Lace 2881 (lecto, designated here K K 000694822; isolecto K H 2015 / 00092150), Myanmar, Pegu District, banks of Pyinma Chaong, N 17 ° 20 ' E 96 ° 10 ', 7 Jan. 1906. Terrestrial herb, 16 – 28 cm tall. Stem erect, simple to rarely branched, mostly glabrous to remotely pilose, densely pilose towards apex. Leaves spirally arranged. Petiole 15 – 30 mm long, pilose. Lamina 65 – 110 by 22 – 45 mm, lanceolate to ovate, apex acute to acuminate, base obtuse to attenuate, margin serrate to shallowly serrate, pilose on both sides, with many long hairs around lamina base and on petiole, up to 10 mm long, and one pair of clavate glands on petiole; lateral veins 6 – 9 pairs. Inflorescence axillary, pendulous, 1 – 3 - flowered raceme. Peduncle 5 – 11 mm long, glabrous. Rachis absent – 2 mm long. Flowers 23 – 30 mm long, 35 – 43 mm deep. Bracts c. 1 by <1 mm, ovate to broadly ovate, apex acute and mucronate, base obtuse, margin entire, glabrous, persistent. Pedicel 7 – 16 mm long, glabrous. Lateral sepals 2, 4 – 5 by 2 – 2.5 mm, free, elliptic to ovate to obliquely ovate, apex acuminate to acute and mucronate, base obtuse to cuneate, glabrous. Lower sepal 15 – 18 mm long, 20 – 25 mm deep, deeply bucciniform, apex acute, glabrous, distal part abruptly constricted into an incurved spur, 8 – 13 mm long, bifid. Dorsal petal 10 – 11 by 12 – 15 mm, broadly elliptic to orbicular, cucullate, apex emarginate to round and mucronate, base round, glabrous, abaxial midvein with a crescent-shaped crest, 1 – 1.5 mm wide. Lateral united petals 20 – 23 mm long, free: the upper petals c. 13 by 9 mm, broadly ovate, obtuse, base cuneate; the lower petals c. 16 by 8 mm, free, obovate, obtuse, base with distinct auricles, glabrous. Stamens: filaments 4.5 m long. Ovary c. 4 mm long, c. 1 mm diam. Fruits c. 12 mm long, 3.5 mm diam, fusiform, glabrous. Seeds unknown. Phenology — Flowering: July to January. Distribution — Endemic to Myanmar (Bago Region, Ayeyarwaddy Region). Ecology — Unknown. Other collections examined. MYANMAR, Ayeyarwaddy Region, Allan 4842 (E E 00752958, E E 00752959, K), Henzada district, 1 Dec. 1908, Bago Division. Note — Impatiens lacei can be easily distinguished from other species by the presence of many long hairs on the leaf margin, measuring up to 10 mm long. We found 2 sheets of Lace 2881 and we select K 000694822 as a lectotype because this specimen is more complete and included dissected flowers.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFE9FF84FCF6FDE4BBBC03CB.taxon	description	Impatiens andersonii Hook. f. (1905) 27,33; W. J. Kress et al. (2003) 169. — Type: Anderson s. n. (lecto, designated here K K 000694627), Myanmar, Shan State, Hoetone, 1 Sept. 1868.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFE9FF84FCF6FDE4BBBC03CB.taxon	description	Phenology — Flowering: July to September to October; fruiting: September to October. Distribution — Myanmar (Shan State), northern Thailand. Ecology — Growing in shady areas in mixed deciduous forest along roadsides, 1600 – 1700 m altitude. Other collections examined. MYANMAR, Shan State, Ruchisansakun et al. 733 (L L 2071122, MAND, RAF), Taunggyi District, Pindaya, Inzen village, N 20 ° 58 ' 53.31 " E 96 ° 38 ' 03.14 ", 26 Sept. 2015. Notes — Impatiens garrettii is similar to I. andersonii. No characters can be found that distinguish the two species and as a result they are synonymized here. The name I. andersonii Hook. f. subsp. garrettii (Craib) T. Shimizu was used to annotate some specimens but was never officially published. Hooker (1905) mentioned only the locality of I. andersonii but did not designate a type specimen. However, we found that only one specimen, Anderson s. n. (K 000694627), matches the protologue (Hooker 1905). Hence, we designate this specimen as the lectotype. Regarding the unclear locality of this specimen, Hotone or Floetone, Yunan (Yunnan), we confirmed from Anderson’s book that the lectotype was collected in Hoetone, near Bhamo, Myanmar (Anderson 1871: 382). For I. garrettii, we found four sheets of Garrett 94 and select K 000675566 as lectotype because it is the most complete specimen with a dissected flower.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFE6FF84FFAFFD1ABFD002E4.taxon	description	Map 21 Distribution of Impatiens andersonii Hook. f. (●), I. delicata Toppin (●) and I. gongshanensis Y. L. Chen (●). to flat, apex obtuse, base cordate, glabrous, abaxial midvein with a slightly crescent-shaped crest. Lateral united petals 29 – 31 mm long, free: the upper petals 12 – 13 by 8.5 – 9 mm, obovate, apex truncate, base cuneate, pink; the lower petals 19.5 – 20 by 8.5 – 9 mm, free, ovate to obovate, apex obtuse to acute, base with distinct auricle, pink-yellow. Stamens: filaments c. 6 mm long. Ovary c. 5 mm long, c. 1.5 mm diam, glabrous. Fruits unknown. Seeds unknown. Phenology — Flowering: October to December. Distribution — Endemic to Myanmar (Kachin State). Ecology — Growing in mossy areas of evergreen forest, c. 400 m altitude. Other collections examined. MYANMAR, Kachin State, Jin et al. PT­ET 1276 (PE PE 2472769 *, PE PE 2472770 *), Putao, Machanbaw, N 27 ° 18 ' 04.83 " E 97 ° 35 ' 08.61 ", alt. 420 m, 25 Oct. 2014; Jin et al. PT­ET 20 (PE PE 2472765 *, PE PE 2472766 *, PE PE 2472767 *), Putao, Mularshidi, N 27 ° 15 ' 17.29 " E 97 ° 25 ' 26.89 ", alt. 460 m, 11 Oct. 2014. Note — Impatiens delicata is similar to I. erubescens but differs in having a glabrous stem, instead of a pilose one. In the protologue, Toppin (1920) compared this species to I. pulchra and mentioned that I. delicata differs from I. pulchra by having 4 or 5 lateral veins. However, we found that it is easier to distinguish I. delicata by its pink instead of orange flowers and a straight or curved spur instead of a spiral one. We found two sheets of Toppin 4287. We select K 000694679 as a lectotype because it is more complete and include dissected flowers.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFE6FF85FCF6FC4AB8FE0092.taxon	description	Phenology — Flowering: August to October. Distribution — Myanmar (Kachin State), China (Yunnan Province). Ecology — Growing in mossy areas of running streams, 1200 – 1300 m altitude. Other collections examined. MYANMAR, Kachin State, Kingdon­Ward 7302 (K H 2015 / 00092 12), Putao, Valley of the Lam Tawai, N 28 ° 00 ' E 97 ° 35 ', 4000 ft, 16 Aug. 1926; Saw­Lwin 1025 (L), Saw­Lwin 1027 (L), Saw­Lwin 1075 (L), Kachin State, 26 Oct. 2015. Note — Impatiens gongshanensis is very similar to I. pulchra but differs in having purple flowers. It is also similar to I. delicata and I. erubescens in overall size, leaf shape and flower colour, but differs in having a curved spur with a spiral end.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFE7FF86FFAFFDA0BB0B0053.taxon	description	Fig. 20 Water colour illustration from Kew which is annotated as I. pulchra. with 1 – 4 pair (s) of linear glands near lamina base; lateral veins 5 – 8 pairs. Inflorescence axillary, erect, 1 – 5 - flowered raceme. Peduncle 20 – 60 mm long, 1 – 2 mm diam, cylindrical, green to reddish green, glabrous to pilose. Rachis 1 – 6 mm long, 1 – 1.5 mm diam, glabrous. Flowers 20 – 50 by 22 – 25 mm, 25 – 50 mm deep, creamy to yellow to orange with darker shade at dorsal petal and upper lateral united petals base. Bracts (2 –) 3 – 9 by 1 – 2 mm, ovate to narrowly lanceolate, apex acute, base cuneate to obtuse, margin entire, green to red, glabrous or abaxially pilose, persistent. Pedicel 10 – 30 mm long, c. 1 mm diam, cylindrical, green to purple, glabrous. Lateral sepals 2, 5 – 13 by 5 – 9 mm, free, ovate to broadly ovate to orbicular to elliptic, apex acute to acuminate and mucronate, base obtuse to truncate, deep orange to green, glabrous or abaxially pilose. Lower sepal 15 – 23 by 10 – 12 mm, 10 – 20 mm deep, bucciniform, apex acute to acuminate and mucronate, deep orange to pale orange with brown reticulations, glabrous, distal part abruptly constricted into an incurved spur with spiral end or initially straight but distally curved, 15 – 35 mm long. Dorsal petal 15 – 18 by 10 – 18 mm, ovate to elliptic to orbicular, cucullate, apex round to truncate and mucronate, base obtuse to truncate, creamy to orange with dark orange at centre, glabrous, abaxial midvein with a crescent-shaped crest, 1 – 3 mm wide. Lateral united petals 24 – 40 mm long, free: the upper petals 10 – 17 by 8 – 15 mm, orbicular to broadly oblanceolate to ovate to elliptic, apex truncate to obtuse, base cuneate, creamy to orange with dark orange at the base; the lower petals 13 – 23 by 7 – 15 mm, free, ovate to oblong to elliptic, apex obtuse, base with round yellow auricle, 2 – 3 mm high, creamy to orange, glabrous. Stamens: filaments 5 – 9 mm long, green; anthers obtuse, white. Ovary 4 – 7 mm long, 1 – 1.5 mm diam, 5 - carpellate, green. Fruits 20 – 22 mm long, 4 – 6 mm diam, long fusiform, 5 - lobed, green, glabrous. Seeds 30 – 35. Fig. 21 Water colour illustration from Kew which is annotated as I. pulchra. Note — We found that I. pulchra and I. burmanica are not sufficiently distinct to maintain them as different species. As a result, we decided to change the status of I. burmanica to I. pulchra var. burmanica.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
03DC0024FFE4FF87FCF6F922BFFF091A.taxon	description	Impatiens pulchra Hook. f. var. burmanica (Hook. f.) Ruchis. & Suksathan. — Impatiens burmanica Hook. f. (1905) 27,33; W. J. Kress et al. (2003) 169. — Type: Huk s. n. (lecto, designated here K K 000694719), Myanmar, Upper Burma, Bhamo, June 1892. Plant up to 40 cm tall. Stem stout, 3 – 6 mm diam, unbranched, glabrous. Leaves spirally arranged. Petiole 20 – 55 mm long, 1 – 3 mm diam, glabrous to remotely pilose. Lamina 70 – 130 by 35 – 60 mm, ovate to elliptic, margin serrate, sometimes with 1 – 4 pair (s) of glands on petiole; lateral veins 5 – 7 pairs. Inflorescence 2 – 5 - flowered. Peduncle (35 –) 50 – 60 mm long, green. Rachis 4 – 6 mm long. Flowers 20 – 35 mm long, 30 – 50 mm deep, orange. Bracts (2 –) 4 – 9 by 1 mm, green, abaxially pilose. Pedicel (22 –) 24 – 30 mm long, green. Lateral sepals (6 –) 7 – 9 by 5 – 6 mm, broadly ovate, base obtuse, deep orange Fig. 22 Impatiens pulchra Hook. f. var. burmanica (Hook. f.) Ruchis. & Suksathan. a. Habit; b. lateral view of flowers; c. lateral sepals; d. lower sepal; e. dorsal petal; f. lateral united petals; g. stamens; h. ovary. — Drawn by Saroj Ruchisansakun. to green, abaxially pilose. Lower sepal 15 – 19 mm long, (10 –) 12 – 15 mm deep, deep orange; spur, initially straight but distally curved, (23 –) 30 – 35 mm long, orange with green tip. Dorsal petal 15 – 17 by 16 – 18 mm, elliptic, apex round, base obtuse, abaxial midvein with a crest, c. 1 mm high. Lateral united petals 24 – 30 mm long: the upper petals c. 14 by 9 mm, ovate to elliptic, apex obtuse, orange; the lower petals 13 – 14 by 7 – 9 mm, ovate, base with distinct auricle, orange. Stamens: filaments 5 mm long. Ovary 4 mm long, 1 mm diam. Fruits 20 mm long, 4 mm diam; pedicels at fruiting stage c. 26 mm long. Seeds unknown. Phenology — Flowering: June to September; fruiting: August to September. Distribution — Endemic to Myanmar (Kachin State). Ecology — 400 – 1200 m altitude. Other collections examined. MYANMAR, NE Burma, alt. 4000 ft, Toppin 2746 (BM, K H 2015 / 00092 75,76,77,78); Kachin State, Kachin Hills: Kumtat 1600 ’ Pungyi Gyl 1250 ’, Toppin 4136 (K H 2015 / 00092 79); Kachin Hills, Mokim s. n. (K K 000694720), N 27 ° 45 ' E 97 ° 50 ', alt. 2000 ft, 6 Sept. 1926, Kingdon­Ward 7373 (K); Bhamo, Palawaghahlaway, alt. 3000 ft, Sept. 1909, Cubitt 284 (K 2 sheets). Notes — Impatiens pulchra var. burmanica differs from I. pulchra var. pulchra in having a straight spur with an incurved tip (Fig. 2 am, 22). Colour illustrations by Toppin of this taxon are deposited in the Kew Herbarium. Hooker (1905) mentioned the locality but did not designate a type for I. burmanica. We found just one specimen, Huk s. n. (K 000694719), matching the protologue (Hooker 1905). Hence, we designate this specimen as lectotype for this species.	en	Smets, E. F., Janssens, S. B. (2018): Balsaminaceae of Myanmar. Blumea 63 (3): 199-267, DOI: 10.3767/blumea.2018.63.03.01, URL: https://doi.org/10.3767/blumea.2018.63.03.01
