Stem 2–4 dm; lvs broadly rhombic-ovate, 6–10 cm at anthesis, acuminate, narrowed from near the middle to an acute base and obscurely petioled; peduncle 1–5 cm, reflexed or recurved below the lvs; sep lance-acuminate, about equaling the pet; pet normally white, 1.5–2.5 cm; anthers 3–7 mm, a fourth or a third longer than the filaments; ovary white or pinkish; 2n=10. Moist or wet woods in May and June. Var. cernuum, with lance-oblong, usually acute pet 5–10 mm wide, and with anthers 3–5 mm long, occurs from Nf. and Que. to Md., and Del., w. occasionally to Mich. Var. macranthum A. J. Eames & Wiegand, with oblong-oval to obovate, often obtuse pet 10–18 mm wide, and with the anthers 4–7 mm, occurs from Vt. to Minn. and Sask., s. to Md., mainly allopatric with var. cernuum.
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