Echinochloa P.Beauv.

Glumes stiff-hispid; spikelets ± loosely arranged on one side of the rhachis Echinochloa
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Spikelets awnless
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Fruit 2–2.5 mm long, 1.8–2.25 mm wide. Panicle very compact, densely crowded
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Fruit 1.4–2 mm long, 1.1–1.6 mm wide. Panicle less compact, if densely crowded then more openly spreading