Inflorescence a panicle, loosely contracted to dense and spikelike, often plumose, branches usually whorled, bearing numerous spikelets.

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Grain persisting at maturity; spikelets plumply ovate; branches of inflorescence incurving; cultivated plants

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Spikelets green, ovate to obovate, plumply plano-convex, 2.5–3.5 mm, smooth, shining, obtuse; upper glume cartilaginous, 3-veined, glabrous; lower lemma resembling upper glume but slightly shorter; upper lemma pale green, slightly shorter than spikelet, finely striate, obtuse.

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Spikelets plumply elliptic, 1.5–1.7(–2.2) mm, pale or purple tinged; flo-rets similar; glumes equal to spikelet, 5–7-veined, glabrous or sparsely setose, with broad incurving margins, subacute, lower glume elliptic, upper glume broader; lemmas smooth, glabrous or puberulous above the middle, minutely ciliolate along upper margins.

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Spikelets protogynous, strongly laterally compressed, floret 1, falling entire from pedicel; rachilla extension absent; glumes equal,± equaling and enclosing floret, broadly lanceolate to oblong, membranous to thinly leathery, prominently 3-veined, strongly keeled, keel usually ciliate, infrequently winged, lower margins almost free or connate for up to half their length, apex obtuse, acute or shortly awned; lemma broadly lanceolate to ovate, usually thinly membranous, keeled, obscurely 5-veined, smooth, glabrous, lower margins often connate, awned from lower back, apex truncate to acute; awn straight when short or geniculate when longer, column smooth, usually twisted at maturity, bristle scabrid; palea absent or very small.

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Spikelets purple or red at maturity, 4–8-flowered; rachilla disarticulating, extended on uppermost floret.

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Spikelets mostly light green, small, 3–5-flowered; pedicel slender. Rachilla compressed.

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Spikelets in very dense heads; palea keeled; lodicules 3; glumes 2 or 3; rachilla internodes not disarticulating.

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Spikelets pendulous on long, wiry inflorescence branches and curved pedicels, 2–7 flowered, followed by a sterile floret; rachilla internodes disarticulating, ca. 1/2 as long as florets.

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Spikelets with 2–7 florets, terminal sterile. Glumes absent to 1(–3). Rachilla extending beyond uppermost floret, disarticulating just below fertile florets.

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