Cespitose perennial from short rhizomes; stems slender, erect, scabrous on the 3 angles; lvs several, the lower bladeless, the upper elongate, often surpassing the stem, to 1.5 mm wide; spikelet 1, terminal, ovoid, 5 mm, 4-8-fld; bract erect, ovate, prolonged into a mucro equaling or surpassing the spikelet; scales ovate, the sides brown, the broad green midrib prolonged into a mucro 0.5-1 mm; bristles 3-6, about equaling the achene; achene brown, trigonous, oblong, 2 mm, obtuse. Dry fields and open woods; Me. to Va., w. to Ont., O., Ky., and Mo. Fr May, June. (Trichophorum planifolium)
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.