Overview

Distribution

Gansu, Hebei, Nei Mongol, Ningxia, Qinghai, Shaanxi, Shanxi, Sichuan, Xinjiang, Xizang [Kashmir, Kazakhstan (Tien Shan), Kyrgyzstan, Mongolia, Nepal, Tajikistan, Uzbekistan].
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Distribution: Kashmir; Himalayas, Tian Shan, Pamir, Mongolia and Tibet.
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Tian Shan, Nepal, Tibet.
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Physical Description

Morphology

Description

Tufted perennial 25-40 cm high. Leaf-blades involute and setaceous, up to 1.5 mm wide when flattened, smooth and glabrous on the lower (outer) surface; ligule c. 1 mm long. Panicle narrow, contracted but not dense, 10-25 cm long. Glumes unequal, the lower a little longer than the upper, narrowly lanceolate and long-acuminate with fragile tips, 10-25 mm long, 3-nerved; lemma terete, 5-7 mm long (including callus), hairy in the lower part with rows of short hairs, glabrous in the middle, spinulose-scabrid towards the top and with a crown of short stiff hairs at the tip; callus acuminate, pungent, 0.9-1.3 mm long. Awn bigeniculate, articulated at the base, 5.5-8 cm long, plumose throughout its length with hairs scarcely exceeding 0.8 mm in length.
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Description

Perennial, forming spreading tuft; old basal sheaths pubescent. Culms sometimes geniculate, 20–60 cm tall, 1–3-noded. Basal leaves 1/4–1/3 length of culms; leaf sheaths shorter than internodes; leaf blades acicular, convolute, 7–15 cm, outer surface glabrous; ligule of basal leaves 0.5–1.5 mm, rounded, ciliate, of culm leaves up to 2 mm. Panicle loosely contracted, 10–25 cm, base enclosed by uppermost leaf sheath. Spikelets pale gray-green or light brown with silvery tips; glumes narrowly lanceolate, lower often slightly longer, 1.2–2 cm, apex scarious, acuminate into fragile filiform extension; callus pungent, 1.2–1.5 mm; lemma 0.6–0.8 cm, pilose along veins in lower half, minutely asperulous above, scabrid-spinulose below apex, a ring of short stiff hairs at awn articulation; awn 5.5–8 cm, deciduous, hairy throughout, 2-geniculate, column 1–1.6 cm to first bend, 0.7–1 cm to second bend, hairs 0.8–1 mm, bristle 3–6 cm, hairs 1–1.5 mm. Fl. May–Jul.
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Elevation Range

3600 m
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Ecology

Habitat

Gravel and rocky slopes; 700–4700 m.
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Notes

Comments

A distinctive species recognised at once by the spinulose-scabrid lemma. 3100-4500m.
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Comments

This species is easily recognized by its shortly plumose awn, spinulose lemma apex, and hairy basal sheaths. The long filiform glume tips are readily broken off, so that the spikelets appear to be much shorter. This is a spring forage grass in desert steppe regions.
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