Stems strongly arching. Proximal midcauline leaves narrowly lanceolate, 50-150 × 8-30 mm. 2n = 18.

Flowering Aug-Oct. Shaded woods; 0-1000+ m; Ont., Que.; Ala., Ark., Conn., Del., Fla., Ga., Ill., Ind., Ky., La., Maine, Md., Mass., Mich., Miss., Mo., N.H., N.J., N.Y., N.C., Ohio, Okla., Pa., R.I., S.C., Tenn., Tex., Vt., Va., W.Va., Wis.

Frequent throughout the state in both dry and moist woods. Sometimes it forms large colonies. The plants vary from simple to widely branched forms which are often found in the same colony. These forms have been given names but I do not believe they are of taxonomic value. Since they occur throughout the state, all forms are shown on one map.