Elymus nutans Griseb.

Very similar to Elymus sibiricus Linn. which differs only in having sessile spikelets and glumes with an awn as long as the body of the glume. Elymus sibiricus has been erroneously recorded for Pakistan through confusion with Elymus nutans.

2700-5000m.

Culms erect or geniculate at base, (13–)50–70 cm tall. Leaf sheath puberulent at base; leaf blade flat, 6–8 × 0.3–0.5 cm, abaxial surface scabrous or smooth, adaxial surface pilose. Spike pendulous, flexuose, somewhat dense, 5–12 cm; rachis margin scabrous, ciliolate. Spikelets usually 2 per node (at least at middle nodes), subsessile or very shortly pedicellate, green, purplish when mature, 9–15 mm, with 2(or 3) glumes and 2–4 florets. Glumes oblong, subequal, 4–5 mm, 3- or 4(or 5)-veined, scabrous along veins, apex with awn 1–4 mm. Lemma narrowly lanceolate, puberulent; first lemma (6–)10 mm; awn (3–) 12–20 mm, divergently scabrous. Palea equaling lemma, ciliate along keels, puberulent between keels. Fl. and fr. Jul–Aug.

Tufted perennial; culms 25-110 cm high, erect or geniculately ascending, slender or stout. Leaf-blades flat, 6-20 cm long, 1.5-5 mm wide, smooth or scaberulous. Spike often flexuous, usually nodding, 5-15 cm long. Spikelets paired (sometimes in threes) at the nodes of the rhachis, shortly but distinctly pedicelled; glumes elliptic or narrowly lanceolate, 4-9 mm long, much shorter than the body of the lowest lemma, conspicuously 1-3-nerved, acute or produced into a short awn up to 2 mm long; lemma lanceolate, 8-11 mm long (excluding the awn), scabrid or shortly hairy, acute, produced into a flexuous awn 15-30 mm long.

C. Asia, Himalaya, E. Turkistan, Mongolia, China.

Gansu, Hebei, Henan, Nei Mongol, Ningxia, Qinghai, Shaanxi, Sichuan, Xinjiang, Xizang, Yunnan [Bhutan, India, Japan, Mongolia, Nepal; C and SW Asia].

Distribution: Pakistan (N.W.F.P., Gilgit & Kashmir); Central Asia and the Himalayas.

3600-4600 m

Fl. & Fr. Per.: July-August.

Mountain slopes, grasslands, riverside sands and pebbles; 2800–3400 m.

Elymus nutans là một loài thực vật có hoa trong họ Hòa thảo. Loài này được Griseb. mô tả khoa học đầu tiên năm 1868.

垂穗披碱草（学名：Elymus nutans）是一种禾本科植物。这种植物分布于中中国蒙古河北、陕西、甘肃，宁夏、青海、新疆、四川、西藏等省区。此外，苏联的亚洲部分和印度的喜马拉雅地区均有分布。