Male flowers small, 1-3 per bract-axil, subsessile; sepals 3, free or very indistinctly connate at base; petals and disk absent; stamens 3; filaments free; anthers longitudinally dehiscent; pistillode absent.

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Male flowers: sepals (4 or)5 or 6, membranous, round, imbricate; petals absent; disk annular, lobed or 5-glandular; stamens 10-20, or more; filaments free; anthers 2-locular, longitudinally dehiscent; pistillode absent.

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Male flowers in apical part of inflorescences, small, yellow, 5-9-fascicled in axil of bracts, with distinct pedicel; pistillode absent; calyx membranous, cupular-shaped, shallowly 2-lobed; petals and disk absent; stamens 2; filaments free; anthers 2-celled, longitudinally dehiscent.

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Male flowers: sepals 5 or 6, free, imbricate, sometimes glandular abaxially; petals absent; disk extrastaminal or intrastaminal, annular or dissected; stamens 6-60, free; anthers longitudinally dehiscing; pistillode absent.

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Male flowers: sepals 5, imbricate; petals 5, longer than sepals; disk absent; stamens [5 or]10 and 2-seriate, inserted on fleshy receptacle, outer ones alternating with petals, inner ones sometimes absent or reduced and scalelike; filaments free; anthers longitudinally dehiscent, 2-loculed; pistillode present.

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Stamens 3; filaments free, long exserted; anthers yellow. Ovary appendage absent or inconspicuous; style 1, short or absent; stigmas usually 2, plumose.

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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 in loose, spicate clusters; palea not keeled; lodicules absent (to 3); glumes usually absent; rachilla internodes usually disarticulating.

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Spikelets with 1 floret, mostly laterally compressed, rachilla extension absent, falling entire; glumes absent or reduced to small scales at base of floret; lemma membranous to leathery, keeled, 5–10-veined, entire, with or without a straight awn from the apex; palea resembling lemma but narrower, 3–7-veined with central keel.

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Female flowers: perianth lobes free or connate, usually enlarged in fruit and persistent, occasionally absent; staminodes scarious, opposite to the perianth lobes, or absent.

雌花：花被裂片離生或合生，通常在果期擴(kuò)大并宿存，偶爾無91精彩国产福利在线；退化雄蕊干膜質(zhì)人妻系列无码专区系列，與花被裂片對生，或者無黄色高清无码在线。