毛叶苦郎藤 mao ye ku lang teng

Parthenocissus assamica Craib var. pilosissima Gagnepain.

Lianas, woody. Branchlets terete, with longitudinal ridges, with sparse, appressed versatile hairs; tendrils bifurcate. Leaves simple; stipules herbaceous, sparsely pilose; petiole 3-7 cm, with appressed versatile hairs; leaf blade cordate-oval, 4.5-7 × 4-9 cm, abaxially with appressed versatile hairs, adaxially nearly glabrous, basal veins 5, lateral veins 4-6 pairs, veinlets inconspicuous abaxially, base subtruncate or cordate, notch of cordate base obtuse and angular, margin 16-24-toothed on each side, apex acute. Inflorescence umbelliform, leaf-opposed; peduncle 2-3 cm, with appressed versatile hairs. Pedicel 2-2.5 mm, with sparse, appressed versatile hairs. Buds oval, 2-3 mm, apex obtuse. Calyx sparsely pilose, entire. Petals triangular-oval, ca. 2.5 mm, sparsely pubescent. Anthers oval. Lower part of ovary adnate to disk; style conical; stigma slightly expanded. Berry 8-10 × 6-7 mm, 1-seeded. Seed rostrum sharp, surface with raised ridges, ventral holes narrow upward 1/3 from base. Fl. May-Nov, fr. Dec-Feb.

Forests in valleys; 100-1300 m. Hainan, Yunnan [Indonesia, Malaysia, Myanmar, Papua New Guinea, Philippines, Thailand].