Plants (5–)20–60 cm. Stems erect or ascending, purple proximally, slender, simple or sparingly branched from bases or distally, smooth (glabrous or tomentulose). Leaves: (proxi-malmost reduced to scales at ground level) proximal blades linear, 50–110 × 2–6 mm, ± lax; distal linear, less than 10 mm, distally reduced to linear scales. Heads 2–13, in loose, corymbiform arrays. Involucres subcylindric, 15–22 × 4–5 mm, apices narrow. Phyllaries 5–6. Florets 5; corollas purple to lavender or white. Cypselae 12–19 mm, abaxial faces smooth, adaxial distinctly rugose, weakly sulcate. 2n = 18.
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