天山针茅(原变种) tian shan zhen mao (yuan bian zhong)

Stipa potaninii Roshevitz.

Culms 17–23 cm tall. Panicle ca. 5 cm. Glumes 2.7–3.3 cm; lemma 7–8 mm, apex scabrid, with a ring of short hairs; awn 7–9.5 cm, column 1.2–1.5 cm, bristle 6–7 cm, hairs to 6 mm. Fl. and fr. Jun–Jul.

Dry mountain slopes; 2100–2600 m. Gansu, Qinghai, Xinjiang, Xizang [Kazakhstan (Tian Shan), Kyrgyzstan, Uzbekistan].

This variety has the most westerly distribution within the species, being more or less confined to the Tian Shan range.