Herbs biennial, 50-100(-120) cm tall; stem sparsely stellate velutinous. Stipules ovate-lanceolate, 3-5 × 2-4 mm, stellate puberulent; petiole 2-8(-15) cm, puberulent in adaxial groove, glabrescent; leaf blade reniform or round, (3-)5-11 × (2-)5-11 cm, both surfaces very sparsely strigose or subglabrous, 5-7-lobed, lobes rounded or acute, margin crenate-serrate. Flowers 3- to many-fascicled, axillary. Pedicels 2-15(-40) mm. Epicalyx lobes filiform-lanceolate, (3-)5-6 mm, ciliate. Calyx cup-shaped, 5-8 mm, lobes broadly triangular, sparsely stellate strigose. Corolla whitish to reddish, slightly longer than sepals; petals 6-8 mm, apex retuse; claw glabrous or sparsely hairy. Filament tube 3-4 mm, glabrous or with a few simple hairs. Style branches 10-11. Schizocarp flat-globose, 5-7 mm in diam.; mericarps 10-12, abaxially smooth, ca. 1 mm thick, angles rounded and rugose, sides reticulate. Seeds purple-brown, reniform, ca. 1.5 mm in diam., glabrous. Fl. Mar-Nov.
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