Annual herbs, 30–90 cm tall. Stem erect, much branched from above, indumentum variable, glabrous or hirsute. Leaves 4–6 cm long, 0.3–1.0 cm wide, linear or narrowly oblanceolate, acute, basally attenuate, lower ones petiolate, upper sessile to subsessile, pilose at the margins. Capitula in dense raceme, 5–6 mm across on 5–10 mm long peduncle. Involucre subcylindric–urceolate, phyllaries 2–3–seriate, linear–lanceolate, acuminate, hyaline, scarious, outer ones smaller, inner ca 3 mm long. Receptacle epaleate. Ray florets female thin, 20–40, white, ligule 0.75–1 mm long. Disc florets almost equalling or slightly longer than the ray florets, yellow, tubular, ca 3 mm long, 4–lobed. Cypselas oblong, ± compressed, sparsely pubescent, 1–1.5 mm long. Pappus uniseriate, bristles 12–16 (–25), barbellate, yellowish – dirty white, ca 3 mm long.