Stems 3–15 dm from a branched caudex, glabrous or nearly so below the rough-puberulent infl; lvs basally disposed, glabrous, or somewhat scabrous above, the larger ones with broadly oblanceolate to obovate, elliptic, or elliptic-ovate, sharply serrate blade mostly 5–20 × 2–10 cm, tapering or sometimes abruptly contracted to the long petiole; infl narrow and elongate, generally leafy-bracteate at least below; invol 5–9 mm, its bracts firm, at least the outer with squarrose, commonly herbaceous tip; rays 10–17, 3.5–5 mm; disk fls mostly 13–24; achenes glabrous, 3–3.5 mm; 2n=18. Rocky woods; N.B. to s. Ont., s. to O., s. Ind., and in the mts. to N.C.
Home