Erect, rigid, annual herb (0.2–) 0.5–1.0 m high; stems slender, scabrous, covered with appressed hairs. Leaves sessile, stiff, ovate, 30–90 mm long, 7–26 mm wide, regularly shortly toothed, acute; both surfaces shortly strigose; hairs 0.3 mm long, appressed, 2-celled with basal cell swollen and seated on a cluster of small epidermal cells, terminal cell conical. Capitula several in an open dichasium on elongated peduncles to 45 mm long; involucre hemispherical, 6–7 mm long, 6–9 mm wide. Disc florets 14–20. Achenes oblong to obovate, 5–6 mm long, 2–3 mm wide, dark brown to black; abaxial surface smooth, convex, with dense short white hairs apically; adaxial surface concave with central papillae and sparse short hairs; margins winged, ±thickened and revolute, shortly pilose on margins. Pappus a shallow cup with 2 short weak scale-like awns.
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