10–30 cm (4–12 in.). With many stems, stem ascending or sometimes erect, many-branched, bristly, short-haired–virtually glabrous, usually reddish.
Regular (actinomorphic), 4–6 mm (0.16–0.24 in.) broad. Petals 5, light purple, with shallowly notched tips. Sepals 5, hairy, tipless, same length as petals. Stamens 10, some without anthers. Pistil of 5 used carpels. Flowers usually in pairs, axillary or terminating stems.
Basal rosette and on stem opposite or solitary. Rosette leaves long-stalked, stem leaves stalked–short-stalked, stipulate. Blade quite round, with palmate venation, very deeply 5–9-lobed; lobes on basal leaves often covering one another, blunt-tipped, often 3-toothed, teeth rounded.