Annual herbs, the whole plant densely glandular. Leaves alternate, entire. Capitula terminal, laxly corymbose, heterogamous but seemingly disciform; phyllaries 2–3-seriate, subequal; receptacle convex or toroid, minutely toothed. Outer florets in 1–2 series, female, narrowly cylindric, with a small hooded erect ray and briefly bifid, hardly exserted style; inner florets many, hermaphrodite, 5-lobed; anthers obtuse at base and with a small triangular terminal appendage; style briefly bifid with short, parallel arms ending in slightly widened triangular appendages. Achenes compressed, pilose; pappus represented by a minutely dentate ring.
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