五叶白粉藤 wu ye bai fen teng

Cayratia elongata (Roxburgh) Suessenguth; Vitis elongata (Roxburgh) Wallich ex M. A. Lawson.

Lianas, woody. Branchlets nearly terete, with conspicuous, longitudinal ridges, glabrous; tendrils unbranched. Leaves palmately 5-foliolate; stipules caducous; petiole 6-10 cm, not or shortly petiolulate, glabrous; leaflet blade obovate-lanceolate or obovate-elliptic, 5-15 × 2-5 cm, glabrous, lateral veins 5-9(-12) pairs, veinlets inconspicuous, base cuneate, margin with 7-9 fine teeth on each side, apex cuspidate. Compound dichasium pseudo-terminal or leaf-opposed; peduncle 1.5-2 cm, glabrous. Pedicel 2-4 mm, glabrous. Buds elliptic, 2-3 mm, apex subrounded. Calyx undulate at margin. Petals ovate-elliptic, 1.5-2.5 mm, glabrous. Anthers oblong. Lower part of ovary adnate to disk; style conical; stigma slightly expanded. Berry purple-black at maturity, 1.5-2 × 1-1.5 cm, 1-seeded. Seed nearly rounded or retuse at apex, surface smooth, raphe slightly raised, ventral mid-raphe inconspicuous, ventral holes retuse at base. Fl. Jun-Jul, fr. Aug-Nov. 2n = 24.

Forests, streamsides; 100-1100 m. Guangxi, Hainan, Yunnan [Bhutan, India, Malaysia, Singapore, Vietnam].