Herbs, 1 m. Stems erect, with minute stellate and glandular hairs, hairs to 0.2 mm. Leaves: petiole 1/2 to equaling blade, with minute stellate and glandular hairs (hairs to 0.2 mm); blade concolorous, sometimes with purple blotch along midvein, ovate-cordate to hastately 3-lobed at base (distally unlobed) or narrowly triangular, 5–8 cm (often smaller), membranous, base cordate to truncate, margins subentire, apex acute, surfaces minutely hairy, hairs usually stellate. Inflorescences usually racemes or panicles. Pedicels 1–3 cm. Flowers: calyx 3.5–6 mm, accrescent to 6–8 mm, lobes without dark midrib, apex acute, stellate-hairy; petals bluish lavender (darker at base), 4–7 mm; staminal column stellate-hairy; style 6–8-branched; stigmas glabrous. Schizocarps 6–8 mm diam., minutely hairy; mericarps 6–8, with dorsal spur to 1 mm. Seeds with endocarp absent or incomplete. 2n = 26, 28.
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