Buttercup Suksdorfia, Buttercup-leaf Mock Brookfoam, Buttercup-leaved Suksdorfia: Suksdorfia ranunculifolia (Synonym: Hemieva ranunculifolia) - Petals white, spreading, 2.5-4 mm long. Inflorescence is a more or less falt-topped paniculate cyme of numerous flowers. It is found east of the Cascade Mts from British Columbia south to northern California and east to Alberta and Montana, an south to central Idaho and the Wallowa Mts. of northeastern Oregon.
Violet Mock Brookfoam, Violet Suksdorfia: Suksdorfia violacea - Petals violet, erect, 6-9 mm long. Inflorescence is an open, loose, raceme or panicled cyme of 1-10 flowers. It is found from British Columbia south along the east side of the Cascades to the Columbia River Gorge, and east to northeastern Washington, northern Idaho, and northwestern Montana.