Elymus atratus (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.
Taxonomic tree
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Domain: Eukarya
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Kingdom: Plantae
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Phylum:
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Class: Liliopsida
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Order: Poales
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Family: Poaceae
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Genus: Elymus
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