Vernonia amoena S.Moore

Slender, little-branched erect annual herb 30–110 cm tall; stems finely pubescent with short T-shaped and asymmetrically T-shaped hairs.. Leaves sessile, elliptic or ovate, 4–15 cm long, 1–6 cm wide, cuneate-attenuate or attenuate into petioloid base, sinuate-serrate, acuminate or obtuse and apiculate, thinly finely pubescent and sometimes scabridulous, glabrescent.. Capitula in lax few-headed terminal corymbiform cymes; stalks of individual capitula shortly finely pubescent; involucre urceolate, 10–19 mm long; phyllaries 3–4-seriate, lanceolate, 5–15 mm long, acute, pale green with darker apices, margins pallid, finely shortly ascending-pubescent.. Corolla blue-purple, mauve or white, 6–11 mm long, lobes 2–3 mm long, glabrous or with a few minute hairs near apex.. Achenes 3.5–3.7 mm long, 7-ribbed, ascending-pubescent; outer pappus of narrow laciniate scales, 0.2–0.7 mm long, inner pappus pure white, 5–6.5 mm long.