Radical lvs ascending, up to > 1m. long including petiole; lamina of diverse shape, us. of oblong-ovate to broadly lanceolate order, clad below in thin appressed white tomentum, above in scattered setose and moniliform hairs, submembr.; ribs up to 20, less prominent than in P. speciosum; margins rather distantly and obscurely crenate with conspicuous linear hydathodes. Scapes stout, grooved, up to 2 m. tall; lower lvs linear-oblong, diminishing to linear bracts. Capitula c. 15-30, in elongate racemes; ray-florets short, inconspicuous; disk-florets purple. Phyll. acuminate, ciliate. Achenes densely strigose. Pappus-hairs slightly thickened at tips.
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