Perennial, 0.5-1.5 m tall; culms clumped, decumbent and usually succulent at base, glabrous. Sheaths longer than the internodes, glabrous; blades 10-28 cm long, 3-6 mm wide, glabrous below, scaberulous above, the margins scabrid. Inflorescence a panicle 12-30 cm long, of short ascending racemes 2-4 cm long; rachis of racemes sinuous, scabrid, winged; spikelets 2-2.7 cm long, appressed; first glume about one-fourth as long as spikelet; second glume about half as long as spikelet. Fruits oblong-elliptic, white, shiny, weakly transverse-rugose. Croat 11808. Growing in large clumps atop exposed tree stumps in Gigante Bay and off Gross Point. The plants become quite dried during the dry season, when the water recedes well below the clusters. Apparently flowers sporadically throughout the year.