Home
Spikelets 1-fld, articulated above the glumes; glumes about equal, lance-linear, papery, with broad scarious margins, the first 3-veined, the second 5-veined, the nerves parallel, only the middle one extending to the often slenderly prolonged tip; lemma shorter than or equaling the glumes, indurate, terete, linear to narrowly fusiform, obscurely nerved or nerveless, villous at least at the base, the margins meeting or overlapping around the membranous palea, and with a bearded, elongate, sharp-pointed callus; awn elongate, terminal, articulated with the lemma but persistent, usually twice geniculate, the lower one or two segments hygroscopic and twisted; perennials with narrow, elongate, often involute lvs and open or contracted panicles of large spikelets. 300, nearly cosmop.
Lemma convolute or with the margins not overlapping at the base, linear, terete or slightly dorsally compressed, glabrous or hairy, minutely bilobed at the tip; callus pungent, or sometimes short and obtuse; awn persistent, straight, flexuous or once to twice geniculate, twisted below the knee.
