Slender, erect, 1-4 dm at anthesis; lvs 1-4, commonly 3, sessile, oval to oblong or lanceolate, 6-12 נ1-4 cm, acute or acuminate, glabrous; raceme long-peduncled, surpassing the lvs; fls 3-8, 8 mm wide; fr dark red; 2n=36. Wet woods and sphagnum-bogs; Nf. and Lab. to Mack. and B.C., s. to N.J., O., Mich., and Minn.; also in n. Asia. May-June. (Maianthemum t.; Vagnera t.)
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.