Dichanthelium wilcoxianum (Vasey) Freckmann
Family: Poaceae
Wilcox's panic grass
[Dichanthelium oligosanthes var. wilcoxianum (Schult.) Gould,  more...]
Dichanthelium wilcoxianum image
from USDA Plants website  
Dichanthelium wilcoxianum image
University of Wisconsin-Stevens Point, Robert W. Freckmann Herbarium (UWSP)