Bouteloua curtipendula var. curtipendula
Family: Poaceae
Side-Oats Grama,  more...
[Atheropogon affinis (Hook. f.) E. Fourn.,  more...]
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From Flora of Indiana (1940) by Charles C. Deam

Very local in the state and usually restricted to small areas. It is found in dry soil, either sandy or clayey, on sandy knolls, gravelly hills and slopes, and on bluffs of streams.