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Information Perennial herb with a single or several unbranched flowering stem(s) to 40 cm high, these glabrous or pilose near the capitulum; taproot simple or branched. Leaves in rosette, oblanceolate in outline, 5–40 cm long, 1.5–5.5 cm wide, base long-attenuate but amplexicaul at the very base, margins pinnatilobed to pinnatisect, the 2–6 lobes triangular, often dentate and often reflexed, apex acute, glabrous or sparsely pilose. Capitulum erect; involucre 11–25 mm long; phyllaries 6–20 mm long, acute, glabrous, with narrow scarious margins, unequal, the outermost smallest and often reflexed. Corolla yellow, the outermost ligules often brownish beneath, tube cylindric, 2.8–3.7 mm long, ligules 7–12 mm long, 2–2.5 mm wide, the innermost smaller than the outer. Achenes fusiform, the body 2.5–4 mm long, attenuate into a long narrow beak 4–15 mm long, the body ribbed, with antrorse spinules; pappus of barbellate setae 4–7 mm long. Fig. 19.

Information A scapigerous perennial herb with a simple or branched taproot Leaves many radical rosulate, 5–11 x 1.5–3.5 cm., exceptionally to c. 34 x 6 cm., oblanceolate in outline, recurved-dentate to runcinate-pinnatifid, glabrous or somewhat pubescent; apical lobe ovate-hastate; lateral lobes of 2–6 pairs, spreading recurved-falcate to broadly triangular, acute, margins entire to laciniate-dentate, sinuses sometimes strongly toothed. Scapes 1-several stout simple, 1–40 cm. tall, glabrous often ± densely lanate at first. Capitula solitary, terminal; involucres up to c. 15 x 9 mm. in fruiting heads, oblong-campanulate. Phyllaries glabrous, sometimes subapically corniculate; the inner series olive-green outside, up to c. 14 mm. long, linear-lanceolate with scarious margins; the outer series brownish-purple when dry, shorter, spreading or reflexed. Corollas yellow, up to c. 10 mm. long; ligule with a darker strip outside; style arms yellowish when dry. Achenes pale-to dark-brown, 2.5–3 mm. long with a beak 4–7 mm. long, oblanceolate, 10–14-ribbed, ± abruptly narrowed above into a cone 0.75–1 mm. long which tapers into the slender beak; ribs uniform narrow antrorsely muricate or echinate above; pappus white, of numerous fine minutely barbellate setae 4–6 mm. long.