Subshrubs or shrubs, 10–80 cm (much branched from woody caudices, aerial stems sometimes dying back). Stems erect and slender or short and branched, prominently striate-angled, glabrous, eglandular. Leaves (reduced) proximal often withered and absent at flowering; sessile; blades oblanceolate to narrowly oblong, 5–10(–25) × 1–3(–7) mm (thin), bases narrowed, margins entire or finely serrate (teeth aristate), faces eglandular, not resinous (distal reduced to linear or oblong scales). Heads usually borne singly (terminal on slender branches). Involucres broadly campanulate to hemispheric; staminate 5–9 mm, pistillate 9–14 mm. Phyllaries narrowly lanceolate, 2–6 mm (not keeled), medians green or brown, margins scarious, apices acute or acuminate (erose, abaxial faces glabrous, eglandular). Staminate florets 20–30; corollas 4.5–6 mm. Pistillate florets 20–30; corollas 3–5 mm. Cypselae 3–5 mm, strongly 5–10-nerved, papillose-roughened, glandular; pappi 15–20 mm (often brownish). 2n = 18.
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