Stems 1–2 m, thinly hairy or glabrous; lvs lanceolate or lance-linear, 10–28 × 1.5–6 cm, long-acuminate, sharply serrate to subentire, gradually narrowed to the base, scabrellate above, puberulent to thinly tomentose beneath, the lower side not much paler than the upper; infl loose and open, flat-topped or concave; fls 30–55(–65); invol 7–17 mm, its principal bracts ovate or oblong at base, abruptly narrowed to a filiform tip 2–8 mm, arachnoid-ciliate, glabrous on the back; pappus purple or brownish-purple, or sometimes merely dark-tawny; 2n=34. Low wet woods and marshes, especially near the coast; Mass. to Fla., inland to w. Pa., W.Va., e. Ky., Tenn., and Ala. Mostly Aug., Sept.
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