三角草(原变种) san jiao cao (yuan bian zhong)

Stipa hookeri Stapf, J. Linn. Soc., Bot. 30: 120. 1894; Timouria aurita Hitchcock.

Panicle contracted, 10–20 × ca. 2 cm; branches erect or obliquely ascending, 2–5 cm, lower 1/3 bare. Spikelets ca. 8 mm; lemma hairs ca. 2 mm. Fl. and fr. Jul–Sep.

Near streams in river valleys; 3600–4400 m. Qinghai (Yushu), Xizang [Kashmir, N Pakistan].

The combination "Achnatherum hookeri (Stapf) Keng" (Claves Gen. Sp. Gram. Prim. Sin. 106, 213. 1957) was not validly published because a full and direct reference to the basionym was not provided.