红枝崖爬藤 hong zhi ya pa teng

Lianas, woody. Branchlets terete, with longitudinal ridges, glabrous; tendrils unbranched. Leaves 3-foliolate; petiole 5-10 mm, glabrous; leaflets elliptic or elliptic-lanceolate, 8-16 × 5-5.5 cm, glabrous, lateral veins 4-7 pairs, veinlets raised abaxially, inconspicuous adaxially, base broadly cuneate or subrounded, margin with 5-8, sparse, fine teeth on each side, apex mucronate. Inflorescence umbelliform, axillary, with 2 or 3 nodes; bracts subtending nodes; peduncle 2-3.5 cm, pubescent. Pedicel 2-3 mm, reddish brown pubescent. Buds oval, 1.5-2 mm, apex subrounded. Calyx shallow and saucer-shaped, pubescent, teeth inconspicuous. Petals oval, 1.2-1.8 mm, apex corniculate, glabrous or subglabrate. Disk distinct, 4-lobed. Lower part of ovary adnate to disk; style distinct; stigma 4-lobed. Berry oblong, 1.3-1.5 cm × 6-7 mm, 2-seeded. Seeds elliptic, apex subrounded, ventral holes inconspicuous. Fl. Apr-May, fr. next Apr-May.

Forests, rocky crests; 100-1100 m. Guangdong, Guangxi, Hainan, Yunnan [Cambodia, Vietnam].