Herbs biennial, erect, to 2(-3) m tall; stem densely hirsute. Stipules ovate, ca. 8 mm, apically 3-lobed; petiole 5-15 cm, stellate hirsute; leaf blade nearly orbicular, palmately 5-7-lobed or crenate-angled, 6-16 cm in diam., papery, abaxially long stellate hirsute or stellate tomentose, adaxially sparsely stellate pilose, lobes triangular or rounded, central lobe ca. 3 × 4-6 cm. Flowers solitary or fascicled, aggregated into a terminal, spikelike inflorescence. Bracts foliaceous. Pedicel ca. 5 mm, 8-10 mm in fruit, stellate hirsute. Epicalyx cup-shaped, usually 6- or 7-lobed, 8-10 mm, densely stellate hirsute, lobes ovate-lanceolate. Calyx campanulate, 2-3 cm in diam., lobes ovate-triangular, 1.2-1.5 cm, densely stellate hirsute. Corolla red, purple, white, pink, yellow, or black-purple, 6-10 cm in diam., sometimes double; petals obovate-triangular, ca. 4 cm, base attenuate, claw tipped with long thin hairs, apex emarginate. Staminal column glabrous, ca. 2 cm; filaments ca. 2 mm. Style branches many, puberulent. Schizocarp disk-shaped, ca. 2 cm in diam., puberulent; mericarps many, nearly orbicular, longitudinally grooved. Fl. Feb-Aug.
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