Slender biennial 5-10(-15) dm from a cluster of fleshy-fibrous roots; stem glabrous or arachnoid, sometimes more evidently tomentose when young; lvs closely white-tomentose beneath, glabrous or hirsute on the upper surface, the basal ones soon deciduous, the others numerous, mostly 30-70, 5-20 cm, sometimes merely spinose-ciliate and up to 1 cm wide, sometimes evidently pinnatifid and to 5 cm wide; peduncles with a few reduced lvs or bracts; heads as in no. 8 [Cirsium carolinianum (Walter) Fernald & B. G. Schub.], but avg larger, the invol to 2.5 cm; 2n=28. Savannas, bogs, and wet pinelands; coastal plain from s. N.J. to Fla. Aug., Sept. (C. revolutum)
Moist savannahs, wet pineland, sphagnum or peaty bogs, swales and clearings on coastal plain; at elevations up to 150 metres.
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