Biorepository Data Portal

Plants 30-100 cm; caudices branching; vascular bundles and petiole bases persistent (attached to old stems for more than a season). Stems 1-10+, ascending-erect, glabrous proximally, usually moderately scabrous-puberulent distally. Leaves: basal often present at flowering as new rosettes; basal and proximal cauline often with distal portions withering by flowering, long-petiolate, blades shiny, ± 3-nerved, linear to oblanceolate, (30-)100-250 × (2-)5-15 mm, margins entire or sparsely serrulate, faces glabrous; mid and distal cauline sessile, blades linear-lanceolate to linear, 15-80 × 1-7 mm, much reduced distally, faces glabrous or scabrous. Heads 20-150+ in compactly corymbiform arrays, sometimes somewhat rounded. Peduncles usually moderately to densely strigillose, sometimes sparsely so or glabrous; bracts minute. Involucres campanulate, 4.5-6 mm. Phyllaries in 3-4 series, broadly oblong, unequal, firm, striately nerved, rounded, glabrous. Ray florets 1-4; laminae 3-5 × 1-1.5 mm. Disc florets 7-13; corollas 4-5 mm, lobes 0.5-1 mm. Cypselae (dark brown, obconic, full) 2-3 mm (7-10 nerved), glabrous; pappi 4-5 mm (clavate). 2n = 18. Flowering (Jul-)Aug-Oct. Prairies and open woods; 0-300 m; Ark., La., Miss., Okla., Tex.