Perennials, often rhizomatous. Leaf sheaths with free margins overlapping almost to the base. Panicle open or loosely contracted, composed of few spikelets. Spikelets large, wedge-shaped to oblong, flat, florets few to several; glumes unequal, membranous or scarious, shorter than florets, lower glume 1–3-veined, upper glume 3–5-veined; floret callus small, rounded; lemmas elliptic-oblong, usually papery, rounded on back, 7–9-veined, glabrous or puberulous, apex obtuse to truncate and erose, awnless or infrequently mucronate; palea shorter and narrower than lemma, scabrid to ciliate along keels, apex 2-toothed. Anthers 3, usually nearly as long as palea.
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