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Lower leaves crowded or sub-rosulate, 3.5–16 x 2–6.5 cm., ± broadly elliptic or oblanceolate, acute to obtuse mucronate at the apex, cuneate below with a tapering-winged petiole-like midrib, irregularly denticulate, ciliate between the teeth, glabrous, or densely setose on the midrib, occasionally sparsely puberulent beneath, lateral nerves ± prominent beneath; upper leaves more spaced, decreasing in size towards the stem apex, becoming oblong-lanceolate sessile and semi-amplexicaul.
Achenes not or hardly beaked, reddish-brown, 4.5–5.8 mm. long, narrowly ellipsoid, or obovoid and ± truncate above, somewhat laterally compressed, broadly ribbed on the margins with 2–5 narrower ribs between, hispidulous on ribs; pappus several-seriate, of numerous white barbellate setae c. 5.5 mm. long.
Phyllaries 3–4-seriate somewhat rugulose outside and ciliolate above, glabrous or rarely glandular-setulose on the midrib; the outermost c. 3 mm. long, ovate; the innermost up to c. 12 mm. long and lanceolate-lorate, obtuse, margins entire and narrowly hyaline.
Synflorescences corymbose-paniculate with spreading-ascending branches up to c. 25 cm. long, or contracted and ± globose; bracts subtending the lower branches foliaceous up to 3 cm. long and narrowly lanceolate.
Stems solitary, simple below branching above, leafy with leaves ± crowded below, often purplish towards the base, sparsely to densely glandular-setose, or glabrescent; setae 0.5–2 mm. long, patent, gland-tipped.
Corollas yellow, 8–11.5 mm. long; tube narrowly cylindric; ligule 4–7 mm. long, lorate, lobes c. 1 mm. long apically papillose.
Involucres 5–8 x 1.5–2 mm. at time of flowering, cylindric, increasing to c. 12 x 2.5 mm. in fruiting capitula.
An erect perennial herb up to 95(120) cm. tall, from a stout fusiform taproot.
Capitula shortly stalked or subsessile, often ± aggregated.
Florets c. 5 per capitulum.
