Culms stout, strongly compressed, to 1 m, usually decumbent, rooting at the nodes; sheaths loose, glabrous or sparsely villous; blades 8–17 mm wide, usually pilose at base; panicle often equaled or surpassed by the lvs; racemes 5–10, thick, 5–10 cm; rachis 1–2 mm wide, spikelets mostly in pairs, oblong-obovate, 2.8–3.1 mm; glume and sterile lemma 3–7-veined; 2n=60. Moist or wet soil; s. O. to Kans., so to N.C., Fla., and Tex. Our plants, with glabrous spikelets, are var. glabrum Vasey ex Scribn. (P. laeviglume)
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