Leaf blades 2-10 cm × 4-30+ mm. Ray laminae ca. 2 mm. Disc corollas ca. 1.5 mm. Cypselae ca. 2.5 mm. 2n = 22 (as E. alba). Flowering year round, mostly summer-fall. Wet places, often ruderal; 60-1600 m; Ont.; Ala., Ariz., Ark., Calif., Del., D.C., Fla., Ga., Ill., Ind., Iowa, Kans., Ky., La., Md., Mass., Mich., Minn., Miss., Mo., Nebr., N.J., N.Mex., N.Y., N.C., Ohio, Okla., Pa., S.C., S.Dak., Tenn., Tex., Va., W.Va., Wis.; Mexico; West Indies; Central America; South America; introduced in Europe, Asia, Africa, Pacific Islands, Australia.

Weak or spreading, strigose annual, often rooting at the nodes; lvs lanceolate or lance-elliptic to lance-linear, acute, narrowed to a sessile or shortly petiolar base, remotely serrulate, 2-10 cm נ4-25 mm; heads 1-3 in terminal or axillary clusters on the many branches, the disk 4-6 mm wide in fl; invol bracts, or some of them, usually a little exceeding the disk; rays whitish, minute; achenes 2-2.5 mm, rugose or warty, slightly hairy above; pappus a nearly obsolete crown well removed from the margins of the truncate-topped achene; 2n=22. A weed in bottomlands and muddy places, native to the New World, now pantropical, and n. in our range to Mass., s. Ont., and Wis. Aug.-Oct. (E. alba; E. erecta; Verbesina a.)

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

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