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Key to Cynosurus

Poaceae

Cynosurus

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1 Panicle linear-oblong, 1-10 (-14) cm long, 0.4-1 cm wide; leaves 1-3 (-4) mm wide; perennial; fertile lemma 3-4 mm long, plus a 0-1 mm long mucro; [section Cynosurus]
1 Panicle ovoid, 1-4 (-8) cm long, 0.7-2 cm wide; leaves (2-) 3-10 mm wide; annual; fertile lemma 4.5-7 mm long, plus a 6-16 mm long awn; [section Falona]