Plants cespitose; with short, knotty, rhizomatous bases. Culms 60-120
cm, glabrous throughout. Sheaths glabrous or pilose on the margins; ligules
0.5-1 mm, membranous, shortly ciliate; blades 16-30 cm long, 2-4 mm wide,
adaxial surfaces with hairs to 5 mm basally, glabrous distally, margins ciliate
near the bases. Rames 6-15 cm; internodes pilose. Sessile spikelets
6-8 mm; calluses about 1 mm, antrorsely hirsute; lower glumes usually
mostly glabrous, rarely sparsely pilose dorsally, keels ciliate distally, apices
acuminate, bidentate, teeth about 0.5 mm; pedicels hispid on the margins,
usually glabrous elsewhere. Pedicellate spikelets similar to the sessile
spikelets. 2n = 20.
Elionurus tripsacoides grows in moist pine woods and low prairies around
southern Texas and the Gulf coast to Georgia, and south through Mexico and Central
America to Argentina.