Spikelets 2–many-fld, flat, disarticulating above the glumes and between the lemmas; glumes shorter than the lemmas, acute or acuminate, 3–7-veined, compressed-keeled, the keel serrulate; lower 1–4 lemmas empty; lemmas acuminate, entire or bifid, 5–15-veined, compressed-keeled, the keel serrate or ciliate; palea firm, sharply 2-keeled, the keels arching and exposed; tall perennials from short or long rhizomes, with flat, serrate lvs and large, branched or spike-like panicles; ligule a short, hyaline, ciliate membrane. 5, e. and c. U.S. (Uniola, in part)
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