Nassella viridula
Native. May-Jul. Rare. Dry prairies, grasslands, open woods, sandy soils. 35-120 cm, 1-4 ft high. Spikelets plumper than in Hesperostipa, base blunt, awns 19-32 mm long.
IA, (IL), MN, (WI)
Indiangrass
Sorghastrum nutans
Native. Late Jul-Oct. Common. Dry to moist prairies. 50-240 cm. 1.5-8 ft high. Flowering heads rusty red-brown; spikelets hairy, bases rounded; awns 10-22 mm long.
IA, IL, IN, MI, MN, OH, WI
From the Bur Oak Guide Grasses in Your Pocket, by Anna B. Gardner, Michael Hurst, Deborah Lewis, and Lynn G. Clark
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