纤细千斤藤 xian xi qian jin teng

Herbaceous vines, glabrous. Branches slender, brown when dry, longitudinally striate. Petiole 3-10 cm; leaf blade conspicuously peltate, triangular-rotund, 3-7 cm, width subequal to length or slightly wider, thinly papery or submembranous, pale on both surfaces, especially abaxially, base subtruncate, apex often finely mucronate, palmately 8- or 9-veined, fine reticulation slightly conspicuous. Inflorescences simple umbelliform cymes, axillary or on short axillary branches with reduced leaves; peduncle rather slender, 1-4 cm; cymelets 5 or 6; flowers purple; pedicel filamentous, 0.5-1 mm. Male flowers: sepals 6, obovate-oblong to broadly elliptic, 1.5-2 mm; petals 3 or 4, slightly fleshy, broadly cuneate to obcordate or rotund, 0.8-1 mm; synandrium ca. 1 mm. Female flowers: perianth as in male flowers. Drupes obovate, slightly flattened; condyle perforate. Fl. Jun.

Forests on mountain slopes; 1700-2400 m. S Xizang (Nyalam) [Nepal].