Perennial herb up to ±1 m tall, stems several from the base, simple below, branching above into the compound inflorescence, stout, glandular-setose, uppermost parts sometimes cobwebby as well, closely leafy. Leaves mostly 65-100 x 18-32 mm, smaller on the inflorescence branches, oblong or oblong-ovate, uppermost ovate-lanceolate, apex acute, mucronate, base cordate-clasping, shortly decurrent, both surfaces glandular setose, margins and midline sometimes thinly white-woolly (sometimes one or both surfaces thinly woolly: see notes below). Heads heterogamous, depressed-globose, ±11-14 mm long, 22-30 mm across the radiating bracts, many in a large leafy spreading corymbose panicle. Involucral bracts in ±9 series, graded, imbricate, much exceeding the flowers, glossy, bright yellow. Receptacle shortly honeycombed. Flowers ±1000-1300, 65-135 female, 1035-1235 homogamous. Pappus bristles many, equalling corolla, tips barbellate, shaft scabrid, bases cohering by patent cilia.
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Perennial herb, up to 1 m high. Leaves 65-100 x 18-32 mm, oblong or oblong-ovate, uppermost ovate-lanceolate, shortly decurrent; both surfaces glandular setose, margins and midline sometimes thinly white-woolly. Heads depressed-globose, 11-14 mm long, many in leafy corymbose panicle. Flowers with bright yellow involucral bracts.
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