Dioscorea wallichii Hook. fil.

Tubers palmately branched, cylindric. Stem twining to right, stout, glabrous. Leaves opposite or alternate, simple; petiole 4--12 cm; leaf blade orbicular or ovate, 6--18 × 6--22 cm, glabrous, basal veins 7--11, base cordate to deeply so with narrow sinus and basal lobes rounded, margin entire, apex acute or shortly acuminate. Male spike 2--5 cm, in delicate, axillary panicles 4--10 cm; rachis straight. Male flowers: bracts triangular-ovate; perianth purplish red dotted, outer lobes elliptic-ovate, inner ones broadly obovate; stamens 6; staminodes large, subglobose. Female spikes simple or branched. Female flowers: perianth lobes fleshy, outer ones ovate, inner ones broadly ovate. Capsule (immature) not reflexed, drying blackish, oblate, 2--2.7 cm, glabrous, base truncate, apex emarginate to truncate; wings 1.7--2 cm wide. Seeds inserted near middle of capsule, winged all round. Fl. Dec.

W Yunnan (Yingjiang Xian) [Bangladesh, India, Malaysia, Myanmar, Thailand].

Forests, mountain slopes; 900--1300 m.

Dioscorea wallichii is a type of climbing tuberous geophyte of the family Dioscoreaceae. It is native to Bangladesh, China, India, Malaysia, Myanmar, and Thailand. It has one edible cylindrical tuber that is about 1 meter long and 3-6 centimeters wide. The tuber is white when young, becoming yellow and stringy once aged.

Dioscorea wallichii là một loài thực vật có hoa trong họ Dioscoreaceae. Loài này được Hook.f. mô tả khoa học đầu tiên năm 1892.

盈江薯蓣（学名：Dioscorea wallichii）为薯蓣科薯蓣属的植物。分布在孟加拉、马来西亚、泰国、缅甸、印度以及中国大陆的云南省等地，生长于海拔950米至1,250米的地区，多生长于山坡林下，目前尚未由人工引种栽培。