Style swollen distally; stigma lobes erect, not grooved. Capsules: apex rounded, truncate, or short-apiculate. 2n = 48.

Flowering spring. Usually deciduous wet-mesic to dry-mesic woods of bottomlands and uplands, slopes of ravines, lower ledges of bluffs, often near waterways, often in loamy soils; 0--900 m; N.B., Nfld. and Labr., N.S., Ont., Que.; Conn., Del., Ga., Ill., Ind., Iowa, Ky., Maine, Md., Mass., Mich., Minn., Mo., N.H., N.J., N.Y., N.C., Ohio, Pa., R.I., S.C., Tenn., Vt., Va., W.Va., Wis.