Perennial herb, woody herb or weakly woody shrub 45–300 cm high; stems densely to thinly arachnoid or sparsely pubescent to glabrescent; roots thick.. Basal leaves petiolate, upper leaves sessile, leaves lanceolate, ovate, ovate-triangular to broadly elliptic, 11–50 cm long, 3–13 cm wide or up to 27 cm wide in basal leaves, base cordate, subtruncate, rounded or cuneate, shortly decurrent onto the petiole, margins sinuate-dentate to coarsely bidentate, apex obtuse or rounded and minutely apiculate, subacute or acuminate; petiole unwinged, exauriculate at the base in basal leaves, broadly auriculate and semi-amplexicaul to exauriculate in stem leaves, 11–67 cm long; all leaves coriaceous to chartaceous, thinly arachnoid or floccose-tomentose and glabrescent above, tomentose or arachnoid or pubescent beneath.. Capitula radiate, erect, usually numerous in a copious congested to lax sometimes divaricately-branched terminal corymbiform cyme; stalks of the individual capitula arachnoid-tomentose or shortly pubescent; involucre cylindrical, 6–11 mm long, 3–7 mm in diameter, arachnoid or woolly at least at base or glabrescent; bracts of calyculus (2–)6–12, lanceolate or linear-lanceolate, 1.5–10 mm long, thinly arachnoid to glabrous and sometimes bearded at the apex; phyllaries 8–20, green, 5.5–10 mm long, thinly arachnoid or pubescent to glabrous, bearded and shortly tapered or sometimes slightly expanded at the apex.. Ray florets pale to bright yellow, 5–8(–12), corolla tube glabrous or sometimes shortly glandular-hairy or with a few long straight multicellular eglandular hairs in lower part, 4.2–5 mm long, rays 6–18 mm long, 2–5 mm wide, 4–10-veined; disc florets yellow, corolla 6.5–9 mm long, tube gradually expanded above the middle or from just below the middle, glabrous or sometimes with long multicellular hairs near the base, lobes 1–1.5 mm long.. Achenes 2–5 mm long, glabrous; pappus 5–9 mm long, white.. Fig. 131 (page 628).
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