Perennial subshrub, straggling, mat-forming, 25–45 (–60) cm high, basally woody, with decumbent or ascending shoots. Leaves ± fleshy, narrowly obovate to oblanceolate, 3–6 (–10) cm long, 1.2–2.5 (–3) cm wide, basally cuneate to semi-amplexicaul, remotely 3–7-toothed on each side, rounded or obtuse and often mucronate, glandular-hairy to ± glabrous; upper leaves smaller and almost entire. Capitula solitary, 4–6 (–7) cm diam.; peduncle 3–10 cm long; involucre hemispherical, 1–1.2 cm high, 1–2-seriate; bracts lanceolate, acute to acuminate, green and glandular-puberulous centrally, whitish scarious-margined. Ray floret ligules white above, bluish or violet beneath. Disc florets bluish-purple to almost black; lobes minutely gibbous. Achenes narrowly triangular-obovoid, 6–7 mm long, 2.75–3 mm wide, wrinkled or faintly reticulate.
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