Spikelets 1-fld, articulated above the glumes; glumes equal or nearly so, herbaceous to membranous, broad, acute to acuminate, distinctly to obscurely 3–7-veined; lemma about equaling or a little shorter than the glumes, fusiform, nearly terete, obscurely veined, becoming indurate at maturity, with a short, oblique, blunt callus at base; margins of the lemma folded over a palea of similar or more membranous texture; awn terminal, articulated with the lemma, readily detached; tufted perennials with flat or involute lvs, membranous or no ligule, and open or contracted panicles or racemes of often large spikelets. 50, N. Temp. and subtrop.
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