Botanical name: Calamagrostis scabrescens    Family: Poaceae (Grass family)
Synonyms: Calamagrostis simlensis, Calamagrostis sikangensis, Deyeuxia scabrescens

Rough Reedgrass is a clustered perennial grass with short rhizomes; stems 2-5 feet high, erect, smooth or slightly rough beneath the panicle. Leaf-blades are up to 45 cm long, 2.5-8 mm wide, mostly flat, sometimes convolute, faintly rough; ligule 4-7 mm long, blunt. Flower panicles are nodding, lanceshaped or narrowly lanceshaped, 10-25 cm long, lax or dense, usually tinged with purple. Spikelets are 4.5-6.5 mm long, the rhachilla prolonged and penicillate; glumes almost equal, lanceshaped, rough; lemma about three-quarters the length of the glumes, rough, 2-toothed at the tip; awn about 1-1.5 times the length of the lemma, inserted at or near its middle, twisted below and slightly bent; callus hairs about a third the length of the floret. Rough Reedgrass is found in Pakistan to Himalayas to Central China, at altitudes of 3000-4700 m.

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The flower labeled Rough Reedgrass is ...