Perennial 5-12 dm from a stoloniferous base, usually much branched above, softly spreading-hairy throughout; lvs lanceolate, the larger 3-10 cm; fls 4-merous, sessile or nearly so, tending to be crowded toward the end of short lateral branches, subtended by much reduced, often ±elliptic lvs; pet none; fr 3-4 mm long and thick, not angled, the well developed bracteoles inserted above its base; 2n=32. Wet ground; on the coastal plain from se. Va. to Fla. and Tex. June-Aug. (L. ravenii)
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.