Stems 1-2 dm, solitary or several, waxy-white, rarely pink or red; fl solitary, nodding, odorless, 10-17 mm; sep often none; pet broadly oblong, slightly widened distally; anthers opening by 2 clefts across the top; style longer than the ovary; stigma glabrous. Rich woods; Nf. to B.C., s. to Fla., Calif., and Colombia; also e. Asia. June-Aug.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.