Chenopodium perttii Sukhor., Phytotaxa 191(1): 21 (2014)

Sukhorukov, Alexander P., Liu, Pei-Liang & Kushunina, Maria, 2019, Taxonomic revision of Chenopodiaceae in Himalaya and Tibet, PhytoKeys 116, pp. 1-141 : 29-30

9. Chenopodium perttii Sukhor., Phytotaxa 191(1): 21 (2014)

Holotype.

NEPAL, [Dhaulagiri Zone] Mustang [Distr.], 13000 ft alt., at edge of field, 3 Aug 1954, J. Stainton, W.R. Sykes & L.H.J. Williams 2159 (BM000832654! isolectotype LE!).

Taxonomic notes.

Morphologically, Chenopodium perttii resembles a Far Eastern and Siberian species, C. bryoniifolium Bunge, but the species have different distributions and reproductive characters ( Sukhorukov and Kushunina 2014). The recently identified chromosome number for C. perttii is 54, so it is genetically distant from other species previously identified as C. album (Bohumil Mandak, pers. comm.). However, we assume that C. perttii is more closely related to Chenopodium album subsp. yunnanense Aellen in Handel-Mazzetti (1929). This subspecies was described from Yunnan (China) and differs by the absence of the seed keel. The lectotype of Chenopodium album subsp. yunnanense was selected in Sukhorukov and Kushunina (2014).

Description.

Annual up to 1(1.5-2) m with erect, scarcely branched stem. Leaves dark green, petiolate (petioles up to 3 cm), blades 3-4 × 2-3 cm, base truncate or broadly cuneate, margins often red; lower leaves triangular, entire to lobate; middle leaves trilobate with elongated mid-lobe (less than two times as long as the lateral ones) gradually tapering to apex and slightly upward-directed lateral lobes, lobes mostly entire; upper leaves also trilobate or entire, narrowly oblong. Inflorescence green, aphyllous or rather bracteose. Fruit ~1.5 mm, pericarp separating from the seed (not easily) with minute papillae that are hardly restored after soaking, almost smooth in dry fruit. Seed prominently keeled, surface with radial striae (Fig. 10E, F ).

Habitat.

Disturbed places, often as a weed in crop fields; 2400-4500 m a.s.l.

Phenology.

Flowering: June-September; fruiting: August-October.

Distribution.

See Fig. 11 .

Specimens examined.

CHINA: Xizang: Ngari Prefecture: Gêrzê County, 4250 m a.s.l., Aug 1972, Li 67 (PE00510178); Xigazê Prefecture: Nyalam (Nielamu) County, Zham (Zhangmu), 13 May 1966, Zhang & Lang 3361 (PE00510187); Gyirong (Jilong) County, Gyirong (Jilong) Town, 2900 m a.s.l., 6 Jun 1972, Tibet Chinese Herbal Medicine Survey Team 151 (PE00510191, PE00510220); Namling (Nanmulin) County, Qunmo, 4000 m a.s.l., 2 Aug 1972, Tibet Chinese Herbal Medicine Survey Team 912 (PE00510199, PE00510219); Namling (Nanmulin) County, Gangba, 4000 m a.s.l., 3 Aug 1972, Tibet Chinese Herbal Medicine Survey Team 993 (PE00510221); Lhasa City: nr Lhasa, July 1939, H.E. Richardson 215 (BM); Lhasa, 3800 m a.s.l., 16 Aug 1965, Zhang & Lang 1532 (PE00510965); [Damxung (Dangxiong) County] Lake Natso, 30°55'N, 90°59'E, 4740 m a.s.l., 4 Sep 2005, Nölling & Hanspach NX05-201-10 (herb. Miehe); Shannan Prefecture: Zhanang (Chatang) County, 3500 m a.s.l., 13 Aug 1960, Fu 528 (PE00510203); Lhünzê (Longzi) County, 3800 m a.s.l., 17 Aug 1960, Fu 564 (PE00510209); Nyingchi Prefecture: [Mainling (Milin) County] Tsangpo valley, Timpa, 29°33'N, 94°52'E, 9700 ft a.s.l., 6 Jul 1938, F. Ludlow et al. 5157 (E); [Bomi County], Yi’ong (Yigong), 2300 m a.s.l., 15 Jul 1965, Ying & Hong 650553 (PE00510158, PE00510159, PE00510160, PE00510161); Nyingchi (Linzhi) County, Deying Distr., 2950 m a.s.l., 17 Jun 1972, Tibet Chinese Herbal Medicine Survey Team 3330 (PE00510163, PE00510222); Mainling (Milin) County, Jiage, 3100 m a.s.l., 10 Jul 1972, Tibet Chinese Herbal Medicine Survey Team 3660 (PE00510162); Zayü (Chayu) County, 1700 m a.s.l., 4 Jul 1980, Ni et al. 0420 (PE00510183); Zayü (Chayu) County, 2600 m a.s.l., 13 Aug 1980, Ni et al. 1026 (PE00510182); Qamdo Prefecture: Baxoi (Basu) County, Rawu (Ranwu) to Baima, 4200 m a.s.l., 27 Aug 1973, Qinghai-Tibet Team 73-1279 (PE00510176, PE00510177); Zhag’yab County, 3100 m a.s.l., 7 Aug 1976, Qinghai-Tibet Team Vegetation Group 9492 (PE00235126);

INDIA. Jammu & Kashmir, Tangmarg, 6000 ft a.s.l., 17 Aug 1956, O. Polunin 56-364 (E); Banihal river, 3300-3835 m a.s.l., 14 Sep 1958, T.A. Rao 7665 (BSD); Loran, 2000-2500 m a.s.l., 17 Sep 1985, Vohra 78338 (BSD); Raydha La, 18 Sep 1986, B.M. Wadhwa 83855 (BSD); Himachal Pradesh: [Kinnaur Distr.] Kalpa, 2775 m a.s.l., 3 Jun 1962, N.C. Nair 22343 (BSD); Chamba Distr., Kilar, 2625 m a.s.l., 19 Jul 1964, N.C. Nair 32634 (BSD); [Kinnaur Distr.] Sangla, 1950 m a.s.l., 20 Sep 1964, N.C. Nair 33027 (BSD); Lahaul, Chimrat, 2900 m a.s.l., 2 Aug 1990, McBeath 2275 (E); Kulu Distr., Kasol, 1667 m a.s.l., Sep 2000, S. Singh s.n. (BSD); Lahaul, 3000 m a.s.l., Aug 2000, S. Singh 144 (BSD); Spiti Distr., Pin Valley National Park, 3800 m a.s.l., 3 Sep 2002, K.C. Sekar 102975 (BSD); Uttarakhand: Kumaon, Nainital, 2100-2500 m a.s.l., 8 Oct 1957, T.A. Rao 4881 (BSD); Mussoorie, 2320 m a.s.l., 6 Aug 1960, anonym 12470 (BSD); Chakrata, 6750 ft a.s.l., 29 Jul 1961, U.C. Bhattacharyya 13069 (BSD); Pauri Garhwal Distr., Pauri, 21 Sep 1979, A.S. Rao 56423 (BSD); Uttarkashi distr., Janki Chatti, 4 Oct 1993, S.C. Majumdar & S. Singh 86486 (BSD);

NEPAL: Midwestern: Karnali Zone: [Jumla Distr.] Jumla vill., 2400 m a.s.l., 27 Sep 2010, A. Sukhorukov 567 (MW); Jumla vill., 29 Sep 2014, A. Sukhorukov 62 (MW); Mugu Distr., Jhari vill., 2600 m a.s.l., 4 Oct 2014, A. Sukhorukov 510 (MW); Mugu Distr., Gamghadi vill., 5 Oct 2014, A. Sukhorukov s.n. (G); Mugu Distr., Pina vill., 6 Oct 2014, A. Sukhorukov 585 (BR); Western: Dhaulagiri Zone: [Mustang Distr.] Thinigaon, Muktinath Himal, 11500 ft a.s.l., J. Stainton, W.R. Sykes & L.H.J. Williams 1372 (LE); [Upper Mustang] Tange, 3500 m a.s.l., 22 Aug 1955, Lobbichler 26 (M); Mustang Distr., Tangbe, 28°54'N, 83°49'E, 3065 m a.s.l., 31 Aug 2001, G. & S. Miehe & Koch 01-098-05 (herb. Miehe); Gandaki zone: Manangbhot Distr., Tilicho base camp (4000 m a.s.l.) to Khangsar (3650 m a.s.l.), 1 Aug 1983, H. Ohba et al. 8331076 (E00238402).

General distribution.

Himalaya and Tibet. Frequent or common in West Nepal.

Figures

Figure 10. SEM micrographs of Chenopodium seeds. A, B C. novopokrovskyanum C, D C. atripliciforme E, F C. perttii. Magnification: 50 x (A, C, E), 200 x (B, D, F).

Figure 11. Distribution map of Chenopodium perttii.