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1 Glumes subequal; lowest 2 florets staminate.
..2 Annual, geniculate; ligules 0.5-2 mm long; glumes glabrous; leaves 1-2 mm wide
..2 Perennial, erect; ligules (1-) 2-3 mm long; glumes villous throughout or at least on the keel; leaves 2-5 mm wide