Flora of Barro Colorado Island

Panicum pilosum

Sw., Prodr. Veg. Ind. Occ. 22.1788

Grama de camino

Slender, erect perennial, 25-60 cm tall; calms geniculate and rooting at lower nodes, glabrous. Sheaths longer than the internodes, glabrous except for long cilia on margins especially near apex; ligules lacking; blades 5-22 cm long, 6-13 mm wide, glabrous below, sparsely hispid above, the margins scabrid. Panicles terminal, slender, 5-20 cm long, the branches simple, short densely flow­ered; rachis both scabrid and long-hispid; spikelets 1.3-1.5 mm long, second, glabrous; first gloms about half as long as spikelet; second gloms and sterile lemma covering fruit. Fruits ovoid-ellipsoid ca 1 mm long, white, shiny. Croat 16551.

Locally abundant to common in clearings; locally common on trails in the forest. Flowering and fruiting throughout the year, more abundantly in the rainy season.

Mexico to Paraguay and Brazil; West Indies. In Pan­ama, known from tropical moist forest in the Canal Zone, San Blas, Chiriqui, Panama, and Darién, from tropical dry forest in CocIé and Panama, from premontane wet forest in Panama and Darién, and from tropical wet forest in Colon.