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Achenes pale-brown, c. 4–5 mm. long, narrowly ellipsoid, slightly flattened glabrous ribbed, the marginal ribs and main rib on each face well developed with c. 2 secondary ribs between, the main rib eventually swollen and rugulose; pappus white, c. 10 mm. long, composed of minutely barbellate setae intermixed with down-like hairs.
Phyllaries imbricate, 3–4 x 1–2 mm. on the outside, increasing to 12 mm. long on the inside, to c. 15 mm. long in fruiting capitula, lanceolate-lorate, obtuse-acute, membranous, midribs of the outermost often setose becoming thickened towards the base, white-or brownish-lanate, glabrescent towards the apex.
Corollas yellow, c. 12–17 mm. long, pubescent about the junction of the tube and ligule; ligule often purplish outside, c. 5 mm. long, oblong.
Involucres c. 15 x 5–10 mm. in fruiting capitula, ± broadly cylindric-campanulate, persistent white-lanate below.
An erect perennial herb up to 90(120) cm. tall, from a semi-woody taproot.
Capitula up to 7(40) in lax reduced corymbiform cymes.
Stems mostly solitary, stout, leafy, hollow, glabrous.
Florets numerous.
