Plants perennial; aquatic, floating or emergent; stoloniferous, mat-forming or prostrate creeping. Culms to 1+ m long, 3-10 mm thick, rooting at the nodes. Sheaths inflated, spongy; ligules 10-40 mm long, membranous, auriculate, acuminate; blades 10-75 cm long, 7-20 mm wide. Pistillate panicles axillary, congested, 1-several per culm, barely exerted from the sheath; primary branches shrply recurved at maturity, with evident pulvini. Pistillate spikelets 3-5.5. mm long; lemmas 5-7-veined; paleas 3-veined. Staminate panicles terminal, open. Staminate spikelets 5-7 mm; lemmas 4-5-veined, hyaline; paleas hyaline, 3-veined. Caryopsesto 2 mm long; pericapr hard, brittle, minutely longitudinally triate, asymmetrically ovoid; style bases persistent.

Luziola subintegra is native from Mexico, Central America, and the Caribeean Basin, extending south through South America to Argentina. Kunzer and Bodle reported its discovery from Lake Okeechobee, Glades County, Florida. The above description is taken from their paper, which also provides illustrations of the species.