藏异燕麦(原变种) zang yi yan mai (yuan bian zhong)

Avena tibetica Roshevitz, Izv. Glavn. Bot. Sada RSFSR 27: 98. 1928; A. suffusca Hitchcock; Helictotrichon suffuscum (Hitchcock) Ohwi; H. tibeticum var. suffuscum (Hitchcock) Tzvelev.

Culms 15–70 cm tall. Panicle densely contracted, spikelike, ovate to oblong in outline, 2–6 cm; branches 0.5–1.3 cm. Spikelets with 2(–3) florets. Fl. and fr. Jun–Sep.

* Rocky mountain slopes, alpine steppe, among shrubs; 2600–4600 m. Gansu, Nei Mongol, Qinghai, Sichuan, Xinjiang (Tian Shan), Xizang, Yunnan.