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DescriptionAnnuals. Inflorescence strongly condensed with the spikelets borne in dense globular clusters along a central axis, sometimes confluent. Outer spikelets of each glomerule with enlarged lower glume and empty lemmas, thus forming a chaffy involucre. Spikelets strongly laterally flattened, 3-6-flowered, all flowers bisexual; glumes subequal, a little shorter than the spikelet, 1-nerved; lemmas 3-nerved, ciliate on margins and keel, entire, ± awned; palea a little shorter than the lemma, keels narrowly or conspicuously winged.