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DescriptionAnnuals. Inflorescence an open nodding panicle. Spikelets large (10 - 40 mm), 2-several-flowered, laterally flattened or terete, disarticulating below each floret or only above the glumes. Lower 1-3 florets bisexual; upper male, sterile or reduced. Glumes herbaceous to membranous, persistent, dorsally rounded; apex acute or acuminate. Lemmas usually shorter than the glumes, 5-9-nerved, awned; apex acute to acuminate, 2-dentate; awn dorsal.