Annual herb 10–240 cm tall, erect; stems pale green, often speckled or tinged reddish-purple, sparsely setulose.. Leaves sessile, elliptic, narrowly elliptic or lanceolate, 1.2–14 cm long, 0.3–6.5 cm wide, cuneate or attenuate into an exauriculate petioloid base, margins remotely sinuate-serrate to serrate-laciniate, unlobed or shortly to deeply 2-lobed towards the base, apex obtuse, apiculate, shortly pilose-setulose.. Capitula numerous to rarely solitary in lax terminal corymbs, erect, radiate or discoid; stalks of the individual capitula slender, glabrous or almost so; involucre cylindrical, slightly swollen at the base, 5.5–7.5 mm long, 2–3 mm in diameter; bracts of calyculus 8–12, dark-tipped, 1–3.5 mm long, glabrous or ciliate; phyllaries 13 or sometimes 8, green with purple tips, 5–7 mm long, shortly hispid or glabrous.. Ray florets 13, 8, 5 or 0, tube 4 mm long, glabrous, rays when present deep pink or pinkish-mauve, 1–3.5 mm long (6–8 mm fide Lisowski), 1 mm wide, 3–4-veined; disc florets dull brick-red, magenta or white, corolla 5.5–8 mm long, tube glabrous, gradually expanded above the middle, lobes 0.5–0.7 mm long.. Achenes 1.5–1.6 mm long, ribbed, shortly hairy in the grooves; pappus 4.5–6 mm long.
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