Elymus atratus

Description

Culms erect or geniculate at base,somewhat slender,40–60 cm tall.Leaf sheath smooth,glabrous;leaf blade ± rolled,3–10(–19) × ca.0.2 cm,both surfaces glabrous,or pubescent at base.Spikelets usually 2 per node,purplish black when mature,8–10 mm,with 2 or 3 florets,usually 1 or 2 florets fertile.Glumes narrowly oblong or lanceolate,subequal,2–4 mm,1–3-veined,scabrous along midvein,apex mucronate or acuminate;lateral veins obscure.Lemma lanceolate,hirsutulous throughout;first lemma 7–8 mm;awn usually reflexed,10–17 mm,scabrous.Palea equaling lemma,ciliolate along keels.Fl.and fr.late summer.2N = 42.