Diarrhena P.Beauv.

Spikelets 3–5-fld, disarticulating above the glumes and between the lemmas; florets at first appressed, at maturity spreading, the upper much reduced; first glume 1-nerved; second glume 3–5-nerved; lemmas smooth, subcoriaceous, the 3 conspicuous nerves convergent at the summit and excurrent into a short, stout cusp; palea shorter than the lemma, truncate, strongly veined; stamens 2; grain obovoid, abruptly contracted into a stout 2-lobed beak, soon spreading the lemma and palea and conspicuously projecting; seed loose within the pericarp, attached only at the base; perennial from a thick, scaly rhizome; stems slender, erect, with lvs mostly below the middle; panicle long and slender, few-fld. Monotypic.