Rhizomatous perennial 3–9 dm, often hispidulous at the nodes, otherwise glabrous; lvs sessile, 3–6 cm, ternately parted to the base, at least the central segment pinnatifid or again ternate, the ultimate segments linear-filiform, 0.3–1 mm wide; heads on very slender and rather short peduncles, the disk 5–10 mm wide, dark reddish-purple; outer invol bracts oblong or linear-oblong, 3–7 mm; rays yellow, ca 8, 1–2.5 cm; receptacular bracts linear-clavate, acutish; disk-cors 5-toothed; style-appendages cuspidately acute; achenes 3–5 mm, narrowly winged; pappus obsolete; 2n=26, 52, 78. Dry, open woods; Md. and DC. to S.C., mainly on the coastal plain, but also inland to theFolded Appalachians; escaped elsewhere. June–Aug.
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