Apios carnea (Wallich) Bentham ex Baker (1876: 188)

Egan, Ashley N. & Pan, Bo, 2015, Pueraria stracheyi, a new synonym to Apios carnea (Fabaceae), Phytotaxa 218 (2), pp. 147-155 : 153

Apios carnea (Wallich) Bentham ex Baker (1876: 188) .

Basionym:— Cyrtotropis carnea Wallich (1830: 50) .

TYPE:— NEPAL. Wallich 5527 (lectotype, E! isolectotype K!, E!).

= Pueraria stracheyi Baker (1876: 198) , syn nov.

TYPE:— INDIA. Uttarakhand: Kumaon, Kalimundi, 7300 ft. Strachey & Winterbottom s.n. (holotype K!). Fig. 1 .

Stems twining, slender, glabrescent. Leaves pinnately (3)5-foliolate, green above, paler below; stipules caducous; petiole glabrous; leaflets opposite, obovate-oblong to oblong, membranous, sparsely hairy to glabrate, base cuneate to rounded, apex acuminate or acute, shortly caudate. Inflorescence a long, lax raceme, lower pedicels fascicled with 5+ flowers per node, becoming solitary above. Bracts and bracteoles minute, caducous. Calyx campanulate, 2-lipped; lobes shorter than the tube, upper two calyx lobes connate, lower tooth lanceolate, lateral teeth shorter, deltoid. Corolla red to reddish-purple or orange, ~twice as long as the calyx, standard 1–2.5 cm; wings shorter than the keel; keel narrow, to 2 cm, strongly curved to more rarely linear. Filament to 2 cm. Style strongly curved to circular. Legume linear, compressed, to 20 cm long, straight or very slightly curved, glabrous, apex beaked. Seeds dark brown, shiny.

Distribution: — Cambodia, China, Himalaya (N. India, Nepal, Bhutan), Laos, Myanmar, Thailand, Vietnam ( Fig. 4 ).

Habitat: —Forests, riversides, roadsides, rock outcrops; 400–2600 m.

Specimens Examined:— CHINA. Hunan: Xinning Xian, Ziyun Shan , 1150 m, 14 September 1984, Zhen-Yu Li 1931 ( US). Tibet: Tse-Kou, 1908, Abbe Monbeig s.n. ( US) . Yunnan: Between Tengyueh and Lungling , October 1922, J. F. Lock 7094 ( US) ; Chien-chuan-Mekong divide, 9–10000 ft, 26 40 N 99 40 E, September 1922, G. Forest 22237 ( US) ; Dali, between km marker 12 and 13 on road from Xiaoguan to Dacang , 2400–2500 m, 25 31 N 100 12 e, 9 July 1984, 1984 Sino-Amer. Bot. Exped. 917 ( US) ; Mengzi , A. Henry 9337 B ( US) ; Near Ngaza, drainage basin of the Yangtze, west of Likiang , August 1923, J. F. Lock 10570 ( US) ; Simao , 5000 ft, A. Henry 12586 A ( A, NY, US) ; Songming Xian, in the vicinity of Longshan , ca. 59 km N of Kunming., 2100 m, 25 28 N 102 46 E, 27 July 1984, 1984 Sino-Amer. Bot. Exped. 1331 ( US) ; Taihoa sse, 29 August 1916, O. Schoch 313 ( US) ; West of Tailifu, Mekong watershed, en route to Youngchang and Tengyueh , September 1922, J. F. Lock 6669 ( US) ; Yangbi, W side of Diancangshan , 2500–2600 m, 25 50 N 99 59 E, 30 June 1984, 1984 sino-Amer. Bot. Exped. 601 A ( US) ; Yangtze watershed, western slopes of Likiang Snow Range , 6 June 1922, J. F. Lock 5409 ( US) . INDIA. Meghalaya: Khasia , 4–6000 ft, J. D. Hooker s.n. ( US) . THAILAND. Chiang Mai: Summit of Doi Chom Cheng, Doi Sootep mountain range , 1500–1650 m, 1 December 1920, J. F. Lock 277 ( US) ; Summit of Doi Chom Cheng, Doi Sootep mountain range ., 1500–1650 m, 1 December 1920, J. F. Lock 290 ( US) ; Summit of Doi Chom Cheng, Doi Sootep mountain range ., 1500–1650 m, 1 November 1920, J. F. Lock 372 ( US) .

Figures

FIGURE 1. Holotype of Pueraria stracheyi Baker collected by Strachey & J.E. Winterbottom s.n. (K). Photographed with permission by Ashley N. Egan while on loan to the U.S. National Herbarium (US).

FIGURE 4. Distribution of Apios carnea in Asia (yellow dots); probable locality for Pueraria stracheyi (red dot). Data collected from the Global Biodiversity Information Facility.