Annuals or rarely short-lived perennials, 12–50(–80) cm; taprooted or rarely fibrous-rooted. Stems (single or multiple from bases) usually basally ascending, strigose to villous, often slightly and minutely stipitate-glandular near to heads. Leaves basal (usually not persistent) and cauline; blades narrowly lanceolate to oblanceolate, basal (5–)20–50 × 3–9 mm, cauline gradually reduced distally, margins entire or proximal shallowly crenate to serrate with 1–3 pairs of teeth, faces sparsely strigose, eglandular. Heads (1–)5–ca. 100. Involucres 2.5–4 × (3–)5–9 mm. Phyllaries in 2–3 series (margins scarious at least in inner), sparsely hirsute, minutely glandular. Ray florets 60–110; corollas white, 2.5–5(–7) mm, laminae not reflexing or coiling. Disc corollas 1.2–2 mm (throats slightly indurate and inflated). Cypselae (0.5–)0.8–1.3 mm, 2-nerved, faces glabrous or sparsely strigose; pappi: outer of minute, blunt scales or fimbriate crowns (to 0.15 mm), inner 0. 2n = 18, 27, 36.
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