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Phyllaries mostly 8–15 x 1–2 mm., the outer and innermost somewhat shorter, linear-tapering or subulate, spine-tipped; the outer somewhat leaf-like with 1–4 mm. long spine-like bristles on the margins as in leaves, thinly pilose-araneose on the backs or glabrescent; the inner spinescent-ciliate to-barbellate or unarmed.
Stems annual single erect simple, thinly pilose-araneose, leafy with the leaves decurrent in discontinuous wings on the stem; wings usually not extending to the node below, absent from uppermost leaves, up to c. 5 mm. wide, coarsely dentate with indumentum as in leaves.
Florets numerous; corollas yellow, 10–16 mm. long; achenes 2–3 mm. long, turbinate, obscurely 8–10-ribbed, hispid-strigose; pappus scales 20–40, 2–3-seriate, of subulate paleaceous barbellate setae 8–10 mm. long.
Capitula discoid, 3–7, laxly to densely clustered at the stem apex, 2–2.5 cm. in diam.
A perennial herb up to c. 80 cm. tall, from a stout creeping woody roostock.
Receptacular alveolae margins with paleaceous setae to c. 6 mm. long.
