Cissus assamica (Laws.) Craib

Lianas, woody. Branchlets terete, with longitudinal ridges, with sparse, appressed and versatile hairs, or nearly glabrous; tendrils bifurcate. Leaves simple; stipules oval, ca. 3 × 2-2.5 mm, herbaceous, nearly glabrous, apex obtuse; petiole 2-9 cm, with sparse, appressed and versatile hairs or glabrescent; leaf blade broadly cordate or cordate-oval, 5-17 × 4-14 cm, abaxially veins with sparse appressed and versatile hairs or glabrescent, basal veins 5, lateral veins 4-6 pairs, veinlets conspicuous abaxially, base cordate, notch rounded or obtuse, margin with 20-44 sharp teeth on each side, apex mucronate or acute. Inflorescence umbelliform, leaf-opposed; peduncle 2-2.5 cm, with sparse, appressed versatile hairs or subglabrate. Pedicel ca. 2.5 mm, with sparse, appressed versatile hairs. Buds oval, 2-3 mm, apex obtuse. Calyx subglabrate, entire or undulate. Petals triangular-oval, 1.5-2 mm, glabrous. Anthers oval. Disk conspicuous, 4-divided. Lower part of ovary adnate to disk; style conical; stigma slightly expanded. Berry purple-black at maturity, 7-10 × 6-7 mm, 1-seeded. Seed surface with sharp and raised ridges, ventral holes short and narrow upward 1/3 from base. Fl. May-Jun, fr. Jul-Oct. 2n = 48.

Himalaya (Nepal), Assam.

Fujian, Guangdong, Guangxi, Guizhou, Hainan, Hunan, Jiangxi, Sichuan, Taiwan, Xizang, Yunnan [Bhutan, Cambodia, India, Nepal, Thailand, Vietnam].

500-800 m

Forests or shrublands by rivers; 200-1600 m.

Vitis assamica M. A. Lawson in J. D. Hooker, Fl. Brit. India 1: 648. 1875.

Cissus assamica är en vinväxtart som först beskrevs av Marmaduke Alexander Lawson och fick sitt nu gällande namn av William Grant Craib.

Cissus assamica ingår i släktet Cissus och familjen vinväxter. Inga underarter finns listade i Catalogue of Life.

Cissus assamica là một loài thực vật hai lá mầm trong họ Nho. Loài này được (M.A.Lawson) Craib miêu tả khoa học đầu tiên năm 1911.

苦郎藤（学名：Cissus assamica）为葡萄科白粉藤属下的一个种。