Cespitose, 4-7 dm; lvs scabrous (visibly so at 10ש, conspicuously septate, the lower to 3 dm, the upper much shorter; invol lf inconspicuous, to 2 cm; infl divaricately branched, 6-12 cm, two-thirds as wide, the glomerules terminal and lateral, 2-6-fld, 1 cm thick; fls eprophyllate; tep lance-subulate, rigid, striate, the sep 3.7-4.3 mm, the pet 3.9-5.2 mm; fr 4.5-5.7 mm, strongly trigonous, ovoid, tapering to a short beak, subtrilocular, the partitions incomplete distally; seeds slenderly fusiform, caudate at both ends, 2-2.3 mm, the body two-fifths as long. Sphagnum-bogs in the pine-barrens; N.S.; s. N.J. to se. Va. (J. asper, a preoccupied name)
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.