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Open woods and clearings.
Southern Ontario to MN, south to western KY, MS, LA, KS, and TX.
Herbaceous perennial; stems usually densely hairy above the middle with minute, stiffly spreading hairs; leaves firm, shallowly toothed, scabrous above and densely pubescent beneath; lowest leaves cordate, ovate or lance-ovate, acuminate, long-petiolate, the upper leaves less codate and with shorter, broad-winged petioles; inflorescence paniculiform, with spreading or ascending, bracteate branches; heads numerous, on peduncles usually under 1 cm; involucral bracts strongly acute to acuminate, the green tips tending to be elongate-rhombic, not noticeably anthocyanic; rays 10-20, commonly blue, 5-10 mm.
Flowers August to October
Wetland Indicator: NA
This species differs from S. cordifolium by its densely pubescent stems, evenly pubescent lower leaf surfaces, more shallowly toothed leaf margins, and winged petioles of the middle cauline leaves. Photographed in northeastern IL.
Gleason, Henry A. and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. Second Ed.
The New York Botanical Garden. Bronx, NY
© Michael Hough 2018