青紫葛 qing zi ge

Cissus discolor Blume; Vitis discolor (Blume) Dalzell.

Lianas, herbaceous. Branchlets longitudinally nearly 4-ridged, glabrous or sparsely pubescent; tendrils bifurcate. Leaves simple; stipules oval or ovate-elliptic, 3-5 × ca. 3 mm, herbaceous, glabrous or sparsely pilose, apex obtuse; petiole 2-4.5 cm, glabrous or sparsely pilose; leaf blade hastate or ovate-hastate, 6-15 × 4-10 cm, glabrous, abaxial and adaxial surfaces of different colors when dry, basal veins 5, lateral veins 4-6 pairs, veinlets conspicuous abaxially, base cordate, margin with 15-34 sharp teeth on each side, apex acuminate. Inflorescence umbelliform, terminal or leaf-opposed; peduncle 0.6-4 cm, sparsely pubescent. Pedicel 2-15 mm, subglabrate. Buds elliptic, 2.5-3 mm, apex rounded. Calyx entire or undulately lobed. Petals elliptic, ca. 2.5 mm, glabrous. Anthers ovoid-elliptic. Lower part of ovary adnate to disk; style conical; stigma slightly expanded. Berry ca. 6 × 5 mm, 1-seeded. Seed with a sharp rostrum at base, surface with conspicuous, obtuse ridges, raphe raised, ventral holes obvious. Fl. Jun-Oct, fr. Nov-Dec. 2n = 24.

On trees or shrubs, brushwood; 600-2000 m. Sichuan, Yunnan [India, Indonesia, Malaysia, Myanmar, Nepal, Thailand, Vietnam].