Annuals, 5–10(–15) cm (delicate). Stems 1–7, purple-red-tinted proximally or throughout, unbranched or branched distally, glabrous or sparsely hairy. Leaves: blades simple or lobed (lobes 3–5, ultimate margins entire or pinnately toothed), glabrous or sparsely hairy, weakly to moderately gland-dotted; mid leaves sometimes lobed (terminal lobes 1–2.5 mm wide). Heads 1–30 per plant, borne singly or in paniculiform arrays. Peduncles 0.5–1.5 cm, glabrous or sparsely hairy. Involucres campanulate to ± urceolate, 5–7 × 6–8 mm. Phyllaries in 2 series, unequal; outer 6–8, distinct or weakly basally connate, obovate or oblanceolate to lanceolate, 4–4.7, apices obtuse to acute; inner 6–8, obovate to ovate, 4–4.5 mm, apices usually acute. Ray florets 6–8; corollas yellow, 2–3 × 0.7–1 mm (not surpassing phyllaries). Disc florets 40–75+; corollas 1.5–2.1 mm. Cypselae obpyramidal to narrowly obpyramidal, 1.5–1.8 mm; pappi of ca. 5 obovate, aristate scales 1.4–1.8 mm. 2n = 6, 16.
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