Aristida adscensionis L.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Species Description - A chiefly tropical sp. with the awns flat at the base, the central one 8–15 mm, the first glume half to two-thirds as long as the second, is rarely adventive in our range.