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Key to Lasiacis

Poaceae

Lasiacis

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1 Leaf blades (3-) 5-12 (-16) cm long, 3-20 (-30) mm wide, mostly 5-10× as long as wide; upper (fertile) floret 3.4-4.0 mm long, 1.9-2.4 mm wide, white to brown at maturity
1 Leaf blades 2-16 cm long, 8-56 mm wide, mostly 2.5-5× as long as wide; upper (fertile) floret 2.8-3.6 mm long, 2.0-2.9 mm wide, dark brown to grayish black at maturity