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FOC | Family List | FOC Vol. 12 | Vitaceae | Tetrastigma

31. Tetrastigma rumicispermum (M. A. Lawson) Planchon in A. Candolle & C. Candolle, Monogr. Phan. 5: 429. 1887.

喜马拉雅崖爬藤 xi ma la ya ya pa teng

Lianas, woody. Branchlets terete, conspicuously tuberculate when old, glabrous; tendrils bifurcate. Leaves pedately 5-foliolate; petiole 3-14 cm; central petiolule 1-3 cm, petiolules of lateral leaflet complex 0.5-1.8 cm, lateral petiolules 0.5-1.8 cm, glabrous; central leaflet obovate-elliptic, 4-17 × 3-8 cm, glabrous or pilose on midvein when young, lateral veins 7-19 pairs, veinlets inconspicuous, base cuneate, base of lateral leaflets asymmetric, margin with 7-16 denticles on each side, apex acute or mucronate. Inflorescence axillary or leaf-opposed on lateral branches, umbelliform; peduncle 3-8 cm, pubescent or glabrous. Pedicel 1-3 mm, papillose or glabrescent. Buds elliptic or obovoid-elliptic, 2-2.5 mm, apex rounded. Calyx shallow and saucer-shaped, glabrous, margin undulate. Petals elliptic, 1.8-2.3 mm, apex galeate, glabrous. Anthers yellow. Disk well developed in male flowers, 4-lobed, thin in female flowers. Ovary coniform, lower part of ovary adnate to disk; style inconspicuous; stigma 4-lobed. Berry globose, 8-10 mm in diam., 2- or 3-seeded. Seeds obovoid-triangular, base attenuate, apex retuse, ventral holes furrowed upward 1/3 from middle. Fl. Apr-May, fr. Jul-next May.

Forests on hillsides or in valleys; 500-2500 m. Xizang, Yunnan [Bhutan, India, Laos, Nepal, Thailand, Vietnam].

1 Ovary glabrous.   31a var. rumicispermum
+ Ovary ferruginous pilose.   31b var. lasiogynum


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