Potentilla perdissecta Rydberg in N. L. Britton et al., N. Amer. Fl. 22: 327. 1908; P. diversifolia Lehmann var. perdissecta (Rydberg) C. L. Hitchcock

Stems 0.5–2 dm. Basal leaves palmate to subpalmate; distal 1/2–2/3 of leaflet margins incised 3/4+ to midvein, undivided medial blade 1.5–3 mm wide, teeth linear to narrowly oblong.

Flowering summer. Edges of meadows, dry gravelly flats and slopes, in montane to subalpine conifer woodlands, mixed grassland communities in alpine tundra; of conservation concern; 1500–3000 m; Alta.; Idaho, Mont., Wash., Wyo.

Variety perdissecta is confined to the northern Rocky Mountains of extreme southwestern Alberta, south into eastern Idaho, western Montana, and western Wyoming. The variety is also reported from Okanogan County, Washington. Apparent intergradation occurs with pinnate-leaved Potentilla ovina var. decurrens (sect. Multijugae).