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Spikelets large, 3–4-fld, disarticulating above the glumes and between the lemmas; glumes unequal, thin, the first 3-veined, the second 5-veined, about equaling the lemma above it; lemmas lanceolate, acute, 7-veined, very thin at the tip, densely villous on 2 sides at the callus; palea thin, 2-toothed, finely ciliate, equaling the lemma; tall grasses, perennial from a long thick rhizome, with flat elongate blades and widely spreading panicle. 2, the other in Siberia.
