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FOC | Family List | FOC Vol. 16 | Asclepiadaceae

36. Belostemma Wallich ex Wight, Contr. Bot. India. 52. 1834.

箭药藤属 jian yao teng shu

Lianas, slender, woody. Inflorescences extra-axillary; peduncle and pedicels slender. Sepals overlapping; basal glands 5. Corolla rotate; tube short; lobes valvate. Corona lobes 5, inserted at back of stamens, fleshy, horned-falcate, horizontally stellate spreading. Filaments connate into a tube; anther appendages membranous, broadly ovate, covering stigma head; pollinia 2 per pollinarium, subglobose, horizontal or suberect. Gynostegium exceeding corolla tube. Stigma head discoid.

Three species: India, Nepal, China; all three in China.

1 Leaves 8.5-11 × 7-8 cm; calyx and corolla glabrous; corolla yellow or yellowish   3 Belostemma cordifolium
+ Leaves 2.5-6 × 1.2-3 cm; calyx and corolla hairy; corolla purple or green with reddish margin.   (2)
2 (1) Leaf blade ovate-cordate, base cordate; branches, leaves, and outside of calyx hispid   1 Belostemma hirsutum
+ Leaf blade ovate, base broadly cuneate or rounded; branches pubescent along 2 lines; leaves and outside of calyx glabrous or glabrescent; sepals ciliate   2 Belostemma yunnanense

Lower Taxa


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