(R. Br.) A. Camus, Ann. Soc. Linn. Lyon n. sér. 76 (1930):164.1931
Perennial, mostly 1-1.5 m tall, erect, usually unbranched; culms glabrous, striate. Leaves glabrous except for scabrid margins; sheaths ± as long as internodes; blades 25-55 cm long, 3-10 mm wide. Panicles terminal, 6-20 cm long, held above the leaves, the primary axis glabrous, the branches usually 1- or 2-branched, bearded at their base; racemes mostly 1.5-4 cm long; rachis and sterile pedicel villous; spikelets in pairs, one sessile, perfect, ca 3 mm long, the other pedicellate, sterile, ca 2.5 mm long; sessile spikelet bearing a tuft of trichomes at the base and a pubescent, reddish-brown, geniculate awn 8-13 mm long; glumes brown to purplish, the glume of the sessile spikelet pubescent toward the base. Fruits not seen. Croat 6973, 16523.
Frequent in the Laboratory Clearing. Probably in flower or fruit much of the year.
This species, var. intermedia, is introduced on BCI. India to Australia and Africa; introduced into most tropical areas. In Panama, known from tropical moist forest in the Canal Zone, Panama, and San Blas.