Annuals to c. 0.3 m high. Leaves to 7 cm long, undivided and then linear or very narrowly elliptic, or lobate to sub-pinnatisect; margin entire, denticulate or dentate. Capitula several to numerous per stem; calycular bracteoles 2–5, 1–2 mm long, 0.3–0.6 mm wide; involucre 4.5–7 mm long, 1.8–3 mm diam.; bracts (10–) 12 or 13; receptacle with marginal tubercles. Florets 25–45; female florets 8–13; corolla tube 2–3 mm long; ligule c. 1 mm long or vestigial. Achenes slightly bottle-shaped, dimorphic; achenes of bisexual florets 2.5–4.5 mm long, with papillose hairs covering c. 50–90% of surface, shortly exceeding pappus-ring; achenes of female florets similar but 3–6 mm long. Pappus 3–4 mm long.
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