Biorepository Data Portal

Stems glabrous, hispid, or scabrous. Peduncles usually scabrous to hispid. 2n = 14. Flowering summer-early fall. Wet prairies, open forests, and river bottoms; 50-500 m; Ont.; Ala., Ark., Conn., Ill., Ind., Iowa, Kans., Ky., La., Mass., Mich., Minn., Miss., Mo., Nebr., N.J., N.Y., N.C., N.Dak., Ohio, Okla., Pa., S.Dak., Tenn., Tex., Vt., Va., W.Va., Wis.

Stem generally glabrous or nearly so, sometimes spreading-hairy toward the base; most of the lvs, except for a few upper ones, generally ±evidently wing-petiolate, the lower surface glabrous or short-hairy, seldom any of the hairs as much as 1 mm; head with mostly 16-35 (commonly ca 21 or 34) rays; invol bracts glabrous except for the ciliate margins; widespread, mainly to the w. or n. of var. connatum.

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

©The New York Botanical Garden. All rights reserved. Used by permission.