Perennials or subshrubs, 25–60 cm (rhizomatous, bases woody). Stems simple, erect or procum-bent, rigid (woody proximally, herbaceous and leafy distally (dying back annually), striate-angled, glabrous, non-resinous. Leaves present at flowering; sessile; blades (1-nerved) linear to narrowly lanceolate, 10–40 × 1–4 mm, bases narrowed, margins minutely undulate, apices acute , faces glabrous, gland-dotted (distal leaves reduced, scalelike). Heads (on short peduncles) in loose corymbiform arrays. Involucres campanulate; staminate 4–7 mm, pistillate 7–9 mm. Phyllaries lanceolate, 1–7 mm, margins scarious, erose-ciliate, medians green (midribs dark, keeled, dilated), apices acute to acuminate (erose-ciliate, abaxial faces glabrous, minutely papillose-gland-dotted). Staminate florets 15–20; corollas 4–5 mm. Pistillate florets 20–30; corollas 3.5–4 mm. Cypselae 3–5 mm, prominently 6–8-nerved, glabrous; pappi 11–14 mm.
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