taxonID	type	description	language	source
03CF8786FF83837DC0F1FC31FC01D556.taxon	description	Oberonia setifera Lindl., Fol. Orchid. 8: 3. 1859. Lectotype (inadvertent designation by Ansari & Balakrishnan, 1990: 38 by reference to “ Type ... (K) ”): INDIA, Maharashtra, South Koncan (= Koukan, Mumbai), s. d., Dalzell ex Stocks 38 (K!), syn. nov. Oberonia demissa Lindl., Fol. Orchid. 8: 4. 1859. Lectotype (inadvertent designation by Seidenfaden, 1978: 37 by reference to “ K, type ”): INDIA, Sikkim, Terai, J. D. Hooker 121 (K!).	en	D. L., Geiger, M., Sulaiman, Murugan, C. (2021): Studies in Oberonia 10. A re-evaluation of Oberonia brachystachys and O. subligaculifera (Orchidaceae: Malaxideae) and their synonyms. Rheedea 31 (3): 141-160, DOI: 10.22244/rheedea.2021.31.03.04, URL: https://doi.org/10.22244/rheedea.2021.31.03.04
03CF8786FF83837DC0F1FC31FC01D556.taxon	description	Oberonia croftiana King & Pantl., Ann. Roy. Bot. Gard. (Calcutta) 8: 7, pl. 6 A. 1898. Lectotype (first-step inadvertent designation by Ansari & Balakrishnan, 1990: 38 by reference to “ Type: ... (CAL) ”; second-step designation here): INDIA, Sikkim, Tropical Valleys, October 1893, Pantling 254 (CAL [CAL 0000000048: Tropical Valleys]!), isolectotypes (CAL [CAL 0000000049]!; AMES [HUH 00101950]!, BM [BM 000088297]!, BR [BR 0000006572181]!, K [K 000387742]!, P [P 00404879]!). Residual syntypes: INDIA, Sikkim, Dikkeling [= Dikling], Pantling 254 L [L 0061772]!; W [W 5951]!); Locality unknown (G n. v.: fide Seidenfaden, 1968). syn. nov.	en	D. L., Geiger, M., Sulaiman, Murugan, C. (2021): Studies in Oberonia 10. A re-evaluation of Oberonia brachystachys and O. subligaculifera (Orchidaceae: Malaxideae) and their synonyms. Rheedea 31 (3): 141-160, DOI: 10.22244/rheedea.2021.31.03.04, URL: https://doi.org/10.22244/rheedea.2021.31.03.04
03CF8786FF83837DC0F1FC31FC01D556.taxon	description	Flowering: Flowering throughout the year with peaks in February and October (Fig. 5 a). The break in June is considered a data artifact. Habitat: Erect or pendulous epiphyte on branches of shrubs and trees in tropical wet or dry evergreen forest to subtropical montane forest, in association with Dendrobium ovatum (L.) Kraenzl. (Orchidaceae), on Carissa congesta L. (Apocynaceae), Anacardium occidentale L., Holigarna grahamii (Wight) Kurz, Mangifera indica L. (all Anacardiaceae), Heterophragma quadriloculare (Roxb.) K. Schum. (Bignoniaceae), Garcinia indica Choisy (Clusiaceae), Elaeocarpus serratus L. (Eleocarpaceae), Euphorbia neriifolia L. (Euphorbiaceae), Erythrina suberosa Roxb., Bauhinia racemosa Lam. (all Fabaceae), Memecylon umbellatum Burm. f. (Melastomataceae), Tectona grandis L. f. (Lamiaceae), Careya arborea Roxb. (Lecythidaceae), Bombax ceiba L. (Malvaceae), Ficus arnottiana (Miq.) Miq., F. benghalensis L., F. racemosa L., Artocarpus heterophyllus Lam. (all Moraceae), Canthium dicoccum Gaertn., Catunaregam spinosa (Thunb.) Tirveng., Ixora brachiata Roxb., Randia brandisii Gamble (all Rubiaceae), Flacourtia indica (Brum. f.) Merr. (Salicaceae), Turpinia malabarica Gamble (Staphyleaceae). 0 – 2400 m, predominantly below 1800 m (Fig. 5 b). Distribution: Bhutan, China (Guangxi?: see Notes), India, Malaya, Myanmar, Nepal, Sri Lanka, Thailand (Anonymous, n. d. b; Hooker, 1888; Cooke, 1907; Brühl, 1926; Blatter & McCann, 1931; Mitra, 1958; Seidenfaden & Smitinand, 1959; Santapau, 1967; Seidenfaden, 1978; Pradhan, 1979; Bose & Bhattacherjii, 1980; Jayaweera, 1981; Banerji & Pradhan, 1984; Ansari & Balakrishnan, 1990; Naithani, 1990; Seidenfaden & Wood, 1992; Turner, 1995; Sakkar, 1995 b; Srivastava, 1996; Bose et al., 1999; Kress et al., 2003; Lucksom, 2007; Misra, 2007; Raskoti, 2009; Chen et al., 2009 Cerejo-Shivkar & Shinde, 2015; Jalal, 2018; Singh et al., 2019: see Notes). Some of the eastern distributional records (Malaya, Thailand) may be due to confusion of O. brachystachys with O. subligaculifera. The distribution based on type material of the O. brachystachys and its synonyms extends from India, Sri Lanka, to Myanmar. Specimens examined: INDIA, Kerala, Kannur, Aralam Wildlife Sanctuary, N 11 ° 552 512 2, E 75 ° 482 452 2 ± 110 m, 29.12.2019, M. Sulaiman 145464 MH [MH 00257633]. Maharastra, Western Ghats, Lingmala near Mahabaleshwar, Townsend 73 / 10 (K). Sikkim, valley of theTeesta, 1898, R. Pantling 238 (BM [BM 000088265], CAL [CAL 0000077889], MEL [MEL 2409511 A], MH [MH 00042702], P [P 00404975], P [P 00404976], US [US 00241398], WU). Notes: Oberonia brachystachys is characterized by the relatively small size of the plant, unjointed leaves, bracts that are about as long as the pedicellate ovary, small flowers (0.75 – 1.5 × 1.0 – 1.75 mm according to protologues, average ~ 1.5 × 1.5 mm), strongly erose, ovate petals, and a variable lip typically with quadrate lateral lobes with strongly erose margins, a more or less constricted and entire mesochile, and more or less developed diverging epichile lobes with strongly erose margins. Oberonia brachystachys has two recognized synonyms, O. demissa and O. bambusicola Kerr (Seidenfaden & Smitinand, 1964; Bunpha et al., 2019). Oberonia demissa is here confirmed as synonym of O. brachystachys, while O. bambusicola is synonymized under O. subligaculifera (see below). Below we discuss each of the synonyms in greater detail. Three main forms have been recognized, distinguished by the unnotched epichile of O. brachystachys vs. deeply incised epichile and more or less rectangular epichile lobes of O. recurva vs. lip with falcate epichile lobes of O. parvula. Those three morphs represent points along a spectrum of continuous variability. The three lips illustrated by Ansari and Balakrishnan (1990: fig. 36) under O. recurva show variation from shallow notch to deep incision, clearly documenting the intraspecific variability. Illustrations of O. brachystachys (Fig. 1) and its synonyms O. parvula, O. croftiana (Fig. 2) show intermediate character states of the epichile lobes quadrate, rounded, and falcate. Differences in drawings from the same plant as demonstrated here with O. setifera (Fig. 1 g – i) further caution the reliance on minute details in drawings. Floral variability has been confirmed with molecular data in O. equitans (G. Forst.) Mutel by Geiger et al. (2020) is also evident in the work of Li et al. (2016) (see Geiger et al., 2020 for details).	en	D. L., Geiger, M., Sulaiman, Murugan, C. (2021): Studies in Oberonia 10. A re-evaluation of Oberonia brachystachys and O. subligaculifera (Orchidaceae: Malaxideae) and their synonyms. Rheedea 31 (3): 141-160, DOI: 10.22244/rheedea.2021.31.03.04, URL: https://doi.org/10.22244/rheedea.2021.31.03.04
03CF8786FF83837DC0F1FC31FC01D556.taxon	description	Oberonia setifera Lindl. (Fig. 1 g – j; not to be confused with O. setigera Ames from the Philippines) was described with awn-shaped petals (petalia setaceis), and a four-lobed, denticulated lip, and its small vegetative size was noted. The flowers were referred to as being perhaps the smallest in the genus. The lectotype at K agrees with O. brachystachys. The description of the petals is odd and may be the result of folded over petals. The drawings on the type sheet of O. setifera by three different authors are illuminating, as it demonstrates the range of interpretations based on the same specimen. Lindley’s drawing (Fig. 1 g) has rather narrow petals as noted in the protologue and the four lobes of the lip are rather different from the other drawings, but show an erose margin of the lip. The drawings by Hooker (Fig. 1 h) and A. S. [? handwriting difficult to read] (Fig. 1 i) show the erose and wider petals, and a more typical four-lobed lip. The drawings by Hooker do not show the erose margin of the lip, while that of A. S. illustrates it very clearly. Either those differences are due to artistic license or due to minute differences of flowers from the same plant. Regardless, it shows that those difference are meaningless at the species level and are either variability or artistic license. Oberonia demissa (Fig. 1 d – f) is a synonym of O. brachystachys. The small plant with small flowers has unjointed leaves and strongly erose petals. The lip was described by Lindley (1859) as trifid with ovate acute middle lobe [= epichile]. That condition is shown in a drawing (Fig. 1 d: presumably by Lindley) on the lectotype at K. A second drawing of the flower by J. D. Hooker (Fig. 1 e), who collected the plant, shows the more typical four-lobed lip of O. brachystachys. The lobes are shown not as large and distinct as is typical, which could either be an inaccuracy of the drawing or a limitation of the preservation. The state of the specimen did not permit to clearly see the condition of the epichile. The combination of plant size, unjointed leaves, and deeply erose petals is consistent with the identification of this plant as O. brachystachys. The drawings of the flowers of O. brachystachys (Fig. 1 a) and O. demissa by Hooker (Fig. 1 e) are indistinguishable. The exquisite drawing under O. demissa by King and Pantling (1898: pl. 10) shows a flower with lateral lobes of the lip drawn downwards, a distinct constriction of the mesochile, and very small epichile lobes. It appears intermediate between O. brachystachys with sub-quadratic lateral lobes and distinct constriction of the mesochile, and the O. parvula - morph (see below) with drawn down epichile lobes but little constriction of the mesochile. It is not clear which plant formed the basis of this drawing and, hence, the accuracy of the drawing could not be verified.	en	D. L., Geiger, M., Sulaiman, Murugan, C. (2021): Studies in Oberonia 10. A re-evaluation of Oberonia brachystachys and O. subligaculifera (Orchidaceae: Malaxideae) and their synonyms. Rheedea 31 (3): 141-160, DOI: 10.22244/rheedea.2021.31.03.04, URL: https://doi.org/10.22244/rheedea.2021.31.03.04
03CF8786FF83837DC0F1FC31FC01D556.taxon	materials_examined	The gathering of the type of O. gardneriana is ambiguous. Thwaites (1861) gave Gardner, in italics but no number, suggesting a gathering. He also gave the number C. P. 593, in roman font, a letter-number combination frequently seen with Thwaites material. As the only specimen at PDA could not be examined and PDA did not respond to inquiries, this matter remains to be fully resolved. The typification of O. parvula presents some challenges. King and Pantling (1896) neither designated a particular type gathering, nor did they illustrate the species in the protologue itself. The likely original material (Pantling 203) from Teesta valley, 1500 ft, is not precisely from the type locality Guru-bathan, 1500 ft., specified in the protologue, which is located in the northern most Teesta valley. Despite this minor mismatch, Pantling 203 is clearly original material (See Art. 9.4, Turland et al., 2018). Ansari and Balakrishnan (1990) inadvertently designated the CAL specimen as the lectotype (See Art. 9.3, Turland et al., 2018). The illustrations of the species in King and Pantling (1898: pl. 6 B) with a drawing by R. Pantling, are excellent, certainly represent the original species concept, and clearly identify the species. Although some published drawings are highly inaccurate to misleading (e. g., O. carpina Gilli: see Geiger, 2019), Pantling 203 (K 000387743) matches the illustration by King and Pantling (1898) very well with the pointed lateral lobes and the acuminate falcate epichile lobes.	en	D. L., Geiger, M., Sulaiman, Murugan, C. (2021): Studies in Oberonia 10. A re-evaluation of Oberonia brachystachys and O. subligaculifera (Orchidaceae: Malaxideae) and their synonyms. Rheedea 31 (3): 141-160, DOI: 10.22244/rheedea.2021.31.03.04, URL: https://doi.org/10.22244/rheedea.2021.31.03.04
03CF8786FF83837DC0F1FC31FC01D556.taxon	description	The specific epithets myriantha and acaulis were recently confused by Bunpha et al. (2019), along with several other misinterpretations about the taxonomy of Oberonia species. It is beyond the scope of this contribution to correct those problems. The type material of O. croftiana presents some challenges. The protologue gave Sikkim-Bhutan frontier, on the banks of the Jaldakha river, 900 ft. as the type locality for Pantling 254. Pantling gatherings were not necessarily collected at a particular time, and may not have been from the exact same place, hence, do not constitute a gathering in the conventional sense: one species from a particular locality at a particular time (A. Schuiteman, pers. comm.). In the case of O. croftiana, Pantling 254 in W (W 5951) and L (L 0061772) were collected at Dikling at 2000 ft., some 20 km W of the border to Bhutan and approximately 50 km NW of the Jaldakha river, in February, 1897. Pantling 254 first-step lectotypes CAL 0000000048 and CAL 0000000049, and isolectotypes AMES 72805 / HUH 00101950, K 000387742 and P 00404879 were collected in Tropical Valley in October 1893. While the localities of all those specimens do not precisely match the indication in the protologue, they are considered here part of the lectotype series; it certainly is original material in the sense of Turland et al. (2018). CAL 0000000048 was annotated as “ Type ” by Ansari in 1985. However, no specific sheet of the two at CAL was explicitly referred to in any publications, the mention of CAL as type repository only qualifies as a first-step lectotypification (See Art. 9.17, Ex. 14, Turland et al., 2018). We here explicitly designate CAL 0000000048 as lectotype by second-step lectotypification.	en	D. L., Geiger, M., Sulaiman, Murugan, C. (2021): Studies in Oberonia 10. A re-evaluation of Oberonia brachystachys and O. subligaculifera (Orchidaceae: Malaxideae) and their synonyms. Rheedea 31 (3): 141-160, DOI: 10.22244/rheedea.2021.31.03.04, URL: https://doi.org/10.22244/rheedea.2021.31.03.04
03CF8786FF83837DC0F1FC31FC01D556.taxon	description	For O. brachyphylla, Blatter and McCann (1931) did not designate any type material. Their illustration was prepared from a live specimen, and the fate of that plant is unknown. The neotype designation by Santapau and Kapadia (1960) is in violation of Art. 9.19 (a) of Shenzhen Code (Turland et al., 2018), because the illustration in the protologue constitutes original material (Art. 9.4 b). Any original material must be considered for lectotypification before a neotype can be designated. Accordingly, the neotype designation by Santapau and Kapadia (1960) is here superseded by the lectotypification of O. brachyphylla through the illustration of the protologue (Blatter & McCann, 1931: pl. 2). Oberonia brachyphylla (Fig. 1 k, l) and O. brachystachys share the small vegetative size, the lack of jointed leaves, the small flowers (1.5 mm), the oval petals with erose margins, and the four-lobed lip with erose margins of the lateral lobes, entire constricted mesochile, and erose edges of the epichile lobes. The plant illustrated by Blatter and McCann (1931) is somewhat smaller than the types of the other names. Those size and slight shape differences of the leaves fall well within the known variability in other species, particularly O. rufilabris Lindl. (Geiger, pers. obs.). Blatter and McCann (1931) compared their species only to O. recurva and neglected O. brachystachys. They distinguished O. brachyphylla from O. recurva by the leaf shape (demonstrably highly variable), longer inflorescence (demonstrably highly variable in many species: Geiger, 2019), oblong sub-acute petals (no difference), lip much longer than the sepals (no difference), mid lobe square, bifid and incurved (no difference). Accordingly, the differentiation was based on lack of knowledge on intraspecific variability and outright errors, hence, O. brachyphylla is treated here as the synonym of O. brachystachys. The alleged occurrence of O. brachystachys in China (Seidenfaden, 1968) is questionable (Chen et al., 2009: as O. recurva). Given the past confusion of O. brachystachys and O. subligaculifera and their synonyms, Seidenfaden’s (1968) indication may be based on O. subligaculifera, which would match distributional patterns of the two species better. Mitra (1958) listed Malaxis cordifolia Rchb. f. as the correct name for O. demissa. There are two M. cordifolia listed in WCSP (2020): Sm. in A. Rees, 1812, and the nom. illeg. by (Rolfe) Ames & C. Schweinf. in O. Ames, 1920. The former is considered a synonym of Liparis petiolata (D. Don) P. F. Hunt & Summerh. It is not clear what name Mitra (1958) was referring to. In any case, any potential Reichenbach name cannot threaten O. brachystachys, as Reichenbach’s orchid species names are all from after 1845 and placement in Oberonia would be after that. AMES 72799 / HUH 00101944 is listed in AMES on-line catalogue as a possible isotype of O. brachystachys. However, given the specific collector and gathering numbers cited by Lindley (1838), which are not present on the AMES sheet, that specimen has no type standing at all. The variability of O. brachystachys seems extensive, some may even suspect excess lumping of taxa. However, based on available material and information, it is impossible to form distinct groupings that would segregate the plants consistently with more than one character. For instance, the degree of serration of the petals is not correlated with the degree of serration of the lip, and neither is correlated with shape of the epichile lobes on the lip. The variability of the sac from a small depression (Figs. 3 k, n, 4 b, e, f) to distinct cavity (Fig. 3 c, d) is surprising. All other flower attributes of Figure 4 with minute sac and the live plant of Figure 3 c, d with distinct sac are identical. Ansari and Balakrishnan (1990: fig. 32 g, 35 g, 36 g – i) seem to have noticed different extents of the sac formation as indicated by the shading in the central upper portion of the lip. The combination of absence of other confirming characters and evidence of variability by Ansari and Balakrishnan (1990) suggest as the simplest explanation that the sac condition is variable in O. b r a c h y s t a c h y s. To demonstrate distinct groupings, much more material would need to be collected, and the morphological data would ideally be supported with molecular techniques. The latter approach has demonstrated extensive intraspecific variability in Oberonia species (Geiger et al., 2020).	en	D. L., Geiger, M., Sulaiman, Murugan, C. (2021): Studies in Oberonia 10. A re-evaluation of Oberonia brachystachys and O. subligaculifera (Orchidaceae: Malaxideae) and their synonyms. Rheedea 31 (3): 141-160, DOI: 10.22244/rheedea.2021.31.03.04, URL: https://doi.org/10.22244/rheedea.2021.31.03.04
03CF8786FF898379C0F1FBC1FB36D0A5.taxon	description	Flowering: Flowering throughout year with peaks in February and October (Fig. 7 a). The gap in June – July is considered a data artifact. Habitat: Erect or pendulous epiphyte, evergreen to deciduous, broad-leaf, mixed and conifer forest, on branches of tree and shrubs, on bamboo, in coffee plantation, 0 – 2400 m, predominantly below 900 m (Fig. 7 a). Distribution: India, Malaysia, Myanmar, Thailand, Vietnam, China, Indonesia, Philippines (Luzon) (Kerr, 1927; Santapau & Kapadia, 1960; Backer & Bakhuizen van der Brink, 1968; Seidenfaden, 1968, 1978; Saldanha in Saldanha & Nicolson, 1976; Pradhan, 1979; Abraham & Vatsala, 1981; Manilal, 1988; Comber, 1990; Naithani, 1990; Sakkar, 1995 a; Turner, 1995; Hop, 1998; Bose et al., 1999; Averyanov & Averyanova, 2003; Kumar & Manilal, 2004; Rao, 2010; Averyanov, 2013; Bunpha et al., 2013, 2019; Jin et al., 2019; herbarium records). Specimens examined: INDONESIA, Java, Bandong, Zollinger 897 (P [P 00428170: left]). Sumatra, Gunung Leuser Nature Reserve, Atjeh, Ketambe valley of Lau Alas, near tributary of Lau Ketambe, de Wilde & de Wilde-Duyfjes 12267 (K). MALAYSIA, Sarawak, Marudidistrict between Bario and Pa Umor, Beaman 11256 (K). MYANMAR, King Lung, MacGregor 822 (E [E 00616243]). PHILIPPINES, Luzon, Cordillera Administrative Region, Bontoc. Vanoverbergh 3828 (F [F 452930], MO [MO 799960]). THAILAND, Mae Hong Son, Khun Yuam, Larsen & Larsen 34115 (K). VIETNAM, Ha Lang, Thanh Nhat, 42 km E of Cao Bang, Averyanov CLB 732 (MO [MO 04970868]). Noh Quan, Cuc Phuong National Park, CP 146; Cuong et al. 775 (MO [MO 5336640]). Notes: The repository of the holotype of O. subligaculifera J. J. Sm. is unknown. The specimen is a holotype as the protologue specified that it was based on a single specimen. The species (Fig. 6 a) and its previous recognized synonyms (Geiger, 2019) O. evrardii (Fig. 6 d, e) and O. kanburiensis (Fig. 6 f, g) is characterized by the elongate acuminate jointed leaves, the larger flowers (1.8 – 2.5 × 2.2 – 3.0 mm), petals with strongly erose to incised margins, the four lobed lip with strongly erose to incised lateral lobes, a constriction of the entire mesochile, and a bifid epichile with erose to incised tips. Although the flowers are very similar to those of O. brachystachys, the jointed leaves of O. subligaculifera (unjointed in O. brachystachys) in combination with the typically larger flowers indicate that they are distinct species. While intraspecific variability is extensive in Oberonia, the jointed vs. unjointed leaves have never been suggested as variable within species. On the contrary, that character has been used to separate the genus Oberonia into two subgenera (Schlechter, 1911): Oberonia s. s. [= Apothemnophyllum Schtr.] with jointed leaves, and Menophyllum Schltr. with unjointed leaves. Bunpha et al. (2019) considered O. evrardii distinct from O. subligaculifera based on differences in the depression of the lip and the shape of the rostellum. Neither of those characters were illustrated, and the sample size for those two species were four and five, respectively. The difference is at best subtle, with significant intraspecific variability demonstrated previously (Geiger, 2019). Those characters are considered insignificant. The shape of the rostellum is likely affected by ontogeny and state of maturation, hence, is meaningless.	en	D. L., Geiger, M., Sulaiman, Murugan, C. (2021): Studies in Oberonia 10. A re-evaluation of Oberonia brachystachys and O. subligaculifera (Orchidaceae: Malaxideae) and their synonyms. Rheedea 31 (3): 141-160, DOI: 10.22244/rheedea.2021.31.03.04, URL: https://doi.org/10.22244/rheedea.2021.31.03.04
03CF8786FF898379C0F1FBC1FB36D0A5.taxon	description	Oberonia arunachalensis (Fig. 6 h, i) is a synonym of O. subligaculifera. It shares the fan-shaped habit, the jointed leaves (according to protologue, not evident in figure), the oval and erose petals, and the lip shape with serrated lateral lobes and epichile lobes with O. subligaculifera. The two names refer to the same species. Rao (1997) compared his O. arunachalensis only with O. kanburiensis, and distinguished the two by the longer leaves and inflorescence (both extensively variable within species), green flowers (no difference), elliptical-elongate petals (no difference) and dentate lobes of the lip (no difference). Accordingly, the differentiation was based on lack of knowledge of intraspecific variability and outright mistakes. The flowers appear to be rather small (c. 1.7 × 1.4 mm) based on the scale bar associated with the flower. Errors in scale bars and drawings are abundant in micro-floral orchids (Geiger, 2019). According to the scale bar of the entire flower (Rao, 1997: fig. 1 d) the bract is 1.3 mm long, while the isolated bract shown in Rao (1997: fig. 1 e) is 1.5 mm long based on its scale bar. Whether this should illustrate variability of floral parts on the same inflorescence or whether those are scale bar errors is unclear. Even with a 15 % variance in measurement accuracy, the flowers of O. arunachalensis would be rather small for O. subligaculifera and more compatible with O. brachystachys. Intraspecific variability of floral size by up to 50 % have been documented in other species (O. complanata: Geiger, 2019; O. equitans: Geiger et al., 2020); O. arunachalensis falls within that documented range of intraspecific variability with respect to O. subligaculifera. The jointed leaves according to protologue, not shown in Rao (1997: figs. 1 c; fig. 6 h), in addition to the more eastern type locality is indicative of a synonymy with O. subligaculifera. The protologue of O. raoi misspelled the specific epithet as raoii, an error already noted by Badyopdhyay et al. (2016). The protologue further mistook an old herbarium ledger number [449798] as the gathering number of the type; the correct citation of the gathering is Pantling s. n. Oberonia raoi (Fig. 6 j, k) is a synonym of O. subligaculifera. The common characters include the habit with jointed leaves, the erose margins of the ovate petals, the overall shape of the lip, and the erose margin of the square lateral lobes at right angle to the axis of the lip. The only character not matching are the margins of the apical lobes of the lip, which are distinctly erose in O. brachystachys while appearing entire in the drawing of O. raoi. However, the quality of the drawing is not particularly good and one may wonder whether artistic license missed those small details. Given the large number of matching details including the jointed leaves, O. raoi is here synonymized under O. subligaculifera. Oberonia raoi was only compared to O. myriantha (= O. acaulis) and not to O. subligaculifera. Oberonia kamlangensis (Fig. 6 l, m) is a synonym of O. subligaculifera. It was compared to O. mucronata (D. Don) Ormerod & Seidenf. in G. Seidenf., but not to O. subligaculifera or to O. arunachalensis described by the same author three years earlier (Rao, 2000). It is another case where a new species is justified by comparison to a very distant and different species while the more similar species were not considered. Oberonia kamlangensis is indistinguishable from O. arunachalensis, itself a synonym of O. subligaculifera. The jointed leaves, the strongly erose petals, and the lip with strongly laciniate lateral lobes and the equally deeply incised epichile lobes (Fig. 6 h, l, m) are shared by the two nominal species. The flower color was given as pale yellow-green by Smith (1913), but the description was based on ethanol-preserved material. Ethanol bleaches the flower color (Geiger, pers. obs.) with orange flowers turn yellow green. Green flowers have been reported by Rao (1997: as O. arunachalensis). Variability in flower color from green to orange is well-known in O. mucronata (Geiger, 2019).	en	D. L., Geiger, M., Sulaiman, Murugan, C. (2021): Studies in Oberonia 10. A re-evaluation of Oberonia brachystachys and O. subligaculifera (Orchidaceae: Malaxideae) and their synonyms. Rheedea 31 (3): 141-160, DOI: 10.22244/rheedea.2021.31.03.04, URL: https://doi.org/10.22244/rheedea.2021.31.03.04
