Perennial from slender rhizomes, erect, simple or sparingly branched above, 3-6 dm; lvs lanceolate or lance-linear, entire or nearly so, revolute, 2-4 cm נ3-8 mm, the uppermost or all but the lowermost ones alternate; pubescence of the younger stems, upper lf-surface, pedicels and fr soft and usually dense, composed of straight, spreading or somewhat ascending hairs; pet notched, pink, 5-8 mm; coma pale dingy brown. Bogs and swamps; Que. to Minn., s. to Va., O., and n. Ill. (E. densum; E. molle Torr., not Lam.)
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.