Usually decumbent and rooting from the lower nodes, 3-15 dm; sheaths retrorse-scabrous, prolonged into 2 erect narrow lobes (1-)2-6 mm; ligules as long as the sheath-lobes and adnate to them; main lvs 3-15 mm wide; panicle 5-15 cm, its branches erect or ascending, some of them floriferous to the base; spikelets erect or appressed, little imbricate, 3-5 mm, a fourth to a third as wide; lemma ciliate on the keel and margins, glabrous or minutely hispidulous on the sides; stamens 6; seed seldom set; 2n=48. Swamps, marshes, and wet fields; pantropical, extending n. to Tenn. and s. Va. (Homalocenchrus h.)
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.