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Species of this Genus


Annual or perennial grasses. Culms tufted, often stoloniferous, long creeping and rooting at nodes. Leaf-blades linear, leaf-sheaths compressed, ligules membranous. Inflorescence of paired or digitate spikelike racemes, these bearing two alternate rows of spikelets, terminating in rachis extension. Spikelets elliptic to ovate, disarticulating above  glumes; glumes shorter than lemmas, strongly keeled; lower glume persistent, sharply acute, scarious; upper glume with an oblique awn; lemmas prominently keeled, 3-nerved, acute to shortly awned; paleas almost as long as lemmas. Caryopsis coarsely rugose, obtusely triquetrous.