(H.B.K.) Chase, Proc. Biol. Soc. Wash. 24:146, f.12.1921
Perennial, stoloniferous, ± erect, mostly 20-60 cm tall; culms slender, glabrous. Sheaths mostly shorter than internodes, glabrous but with pubescence on collar and long-ciliate margins; blades narrowly lanceolate, 4-12 cm long, 1-1.5 cm wide, rounded to subcordate at base, long-pilose above, glabrous to long-pilose below, scabrous and long-ciliate on margins, minutely cross-veined. Panicles 5-10 cm long, narrow, having very slender, few-flowered branches; spikelets ca 7 mm long, acuminate; glumes glabrous, nearly equal, covering sterile lemma and fertile floret, the sterile lemma villous between lateral veins. Fruits indurate, acuminate, white or tan, smooth, shiny. Croat 5624.
Common in clearings. Flowers are seen all year, but especially during the rainy season.
Sometimes confused with Acroceras oryzoides, but is distinguished by the nearly equal glumes covering the fruit and by the pubescence of the sterile lemma.
Southern Mexico south to Peru, Bolivia, and northern and eastern Brazil. In Panama, ecologically variable; known throughout tropical moist forest and from tropical wet forest in Colón, Panama, and Bocas del Toro, from premontane rain forest in Panama (Cerro Jefe), and from lower montane rain forest in Chiriqui (Volcán).