大药雀麦 da yao que mai

Bromus himalaicus Stapf var. grandis Stapf in J. D. Hooker, Fl. Brit. India 7: 359. 1896 ["1897"]; B. grandis (Stapf) Melderis (1978), not (Shear) Hitchcock (1912).

Perennial. Culms loosely tufted, 50–70 cm tall. Leaf sheaths glabrous or hairy when young; leaf blades 10–20 cm × 3–5 mm, abaxial surface and margins scabrid, adaxial surface hairy. Panicle simple, lax, 10–20 cm; branches arched, often with a single apical spikelet. Spikelets 18–25 mm, florets 5–9; rachilla internodes later exposed; glumes pubescent, lower glume 12–15 mm, 1-veined, apex acuminate, upper glume 14–17 mm, 3-veined, apex shortly aristiform; lemmas 12–16 mm, 7-veined, densely pubescent throughout, apex shortly 2-toothed, awned from sinus; awn 12–18 mm, stout, scabrid, straight, later recurved; palea shorter than lemma, keels ciliate, abaxial surface minutely hairy. Anthers 1.5–2 mm. Fl. May–Aug.

Sandy places, meadows; ca. 3700 m. Xizang, Yunnan [Bhutan, India (Sikkim), Nepal, Pakistan].