Culms 6-10 dm, usually branched above; sheaths overlapping, narrowly but sharply keeled; blades usually folded, 4-8 mm wide; racemes slender; 3-8 cm, exserted or partly included in the subtending sheath; sessile spikelet 4-5 mm, usually surpassing the adjacent internode; its first glume coarsely transversely wrinkled on the back, narrowly 2-winged toward the summit, often notched; sterile spikelet 3-4 mm, often divaricate when dry, together with its pedicel (2-3 mm) conspicuously exceeding the fertile one. Wet pine-barrens; s. N.J. to Fla. and Tex. (Manisuris r.; Rottboellia r.)
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.