Perennial, ascending to erect herb. Stems glabrous to densely hairy with simple and stellate hairs. Lvs ± glabrous to densely hairy, reniform to suborbicular, obtuse to cordate at base, shallowly or moderately 3-5-(7)-palmately lobed and crenate, 1-15-(20) cm diam.; petioles 1-15-(30) cm long; stipules narrowly to broadly ovate with acute apex, 3-10 mm long. Fls 2-10 in axillary clusters or irregular racemes; fruiting pedicels 10-45 mm long; epicalyx segments narrow-oblong to elliptic-ovate, somewhat < calyx; calyx teeth broadly ovate with acute apex, sparsely to densely hairy with stellate or simple hairs and ciliate, not enlarged at fruiting; petals from deep pink to reddish or bluish purple with darker markings, 2-5× as long as calyx, 12-30 mm long. Mericarps 8-12-(15) per fr., usually glabrous, strongly reticulately veined on back; edges sharply angled but not winged.