Cardamine purpurea var. albiflora Hultén; C. purpurea var. albiflos Hultén; C. purpurea var. lactiflora O. E. Schulz ex Steffen

Perennials; (often cespitose) ; hirsute. Rhizomes vertical, 1-3 mm diam., (not fleshy). Stems (simple or few to several from base), usually erect, unbranched, (0.3-)0.5-1.2(-1.5) dm. Basal leaves sometimes rosulate, usually 3 or 5-foliolate, rarely simple, (1.5-)2.5-7 cm, leaflets petiolulate or sessile; petiole (1.2-)2-5 cm; lateral lobes or leaflets sessile, blade similar to terminal, distinctly smaller; terminal lobe or leaflet petiolulate (0.05-0.6 cm), blade reniform or suborbicular to broadly ovate, 0.3-1 cm × 4-15 mm, base subcordate to rounded, margins entire, repand, or obscurely 2-toothed. Cauline leaves 1-3, usually compound, rarely simple, petiolate, leaflets petiolulate or sessile; petiole (0.2-)0.5-2 cm, base not auriculate; similar to basal, smaller. Racemes ebracteate. Fruiting pedicels suberect, ascending, or divaricate, 5-12 mm, pubescent. Flowers: sepals oblong, 2-3(-4) × 1.4-1.7 mm, lateral pair not saccate basally; petals usually purple to pink, rarely white, obovate, 5-7(-9) × 3-4(-5) mm, (clawed, apex rounded); filaments: median pairs 2.5-3.5 mm, lateral pair 1.5-3.5 mm; anthers oblong, 0.6-0.9 mm. Fruits linear, 1.5-2.5 cm × 1.5-1.8 mm; ovules 10-14 per ovary; style 1-2.5 mm. Seeds brown, oblong to broadly ovoid, 1.7-2.1 × 1.4-1.7 mm. 2n = 96.

Flowering Jun-Aug. Moist tundra, damp woods and ravines, alpine turf, river flats, peaty subarctic meadows, streamsides, moist slopes; 600-1800 m; Yukon; Alaska; e Asia (Russian Far East).