United States, Arkansas, Pope, NE 1/4 of Sect. 22, R20W, T10N. Along state 7, 4 miles north of jct. state 164.
Edge of oak woods and stony roadside. Associated Panicum species, P. xalapense, P. perlongum, P. boschii, P. sphaerocarpon, P. ravenelii, P. commutatum, P. lanuginosum, P. dichotomum, and P. villosissimum