Blue Violet, Early Blue Violet, Hookedspur Violet, Western Longspur Violet: Viola adunca (Synonyms: Viola adunca ssp. adunca,Viola adunca var. adunca,Viola adunca var. bellidifolia, Viola adunca var. cascadensis, Viola adunca var. uncinulata) -
European Field Pansy: Viola arvensis (Synonym: Viola tricolor var. arvensis) -
Pioneer Violet, Stream Violet: Viola glabella -
Small White Violet: Viola macloskeyi (Synonyms: Viola macloskeyi ssp. macloskeyi, Viola macloskeyi ssp. pallens, Viola macloskeyi var. macloskeyi, Viola macloskeyi var. pallens) -
LeConte Violet, Northern Bog Violet: Viola nephrophylla (Synonyms: Viola nephrophylla var. cognata, Viola nephrophylla var. nephrophylla, Viola sororia ssp. affinis, Viola sororia var. affinis) - ?
Baker Violet, Baker's Violet: Viola nuttallii var. bakeri (Synonym: Viola bakeri) -
Canary Violet, Upland Yellow Violet, Yellow Montane Violet: Viola nuttallii var. praemorsa (Synonyms: Viola linguifolia, Viola nuttallii ssp. praemorsa, Viola nuttallii var. linguifolia, Viola praemorsa, Viola praemorsa ssp. arida, Viola praemorsa ssp. flavovirens, Viola praemorsa ssp. linguifolia, Viola praemorsa ssp. oregona, Viola praemorsa ssp. praemorsa, Viola praemorsa var. altior, Viola praemorsa var. linguifolia) -
Valley Violet, Valley Yellow Violet, Yellow Sagebrush Violet: Viola nuttallii var. vallicola (Synonyms: Viola nuttallii ssp. vallicola, Viola nuttallii var. major, Viola vallicola var. major, Viola vallicola var. vallicola) -
Darkwoods Violet, Evergreen Yellow Violet, Round-leaved Violet: Viola orbiculata (Synonyms: Viola sempervirens var. orbiculata, Viola sempervirens var. orbiculoides) -
Marsh Violet: Viola palustris (Synonyms: Viola palustris var. brevipes, Viola palustris var. palustris) -
Goosefoot Violet, Purplish Violet: Viola purpurea ssp. venosa (Synonyms: Viola purpurea ssp. geophyta, Viola purpurea var. venosa) -
Cutleaf Violet, Fan Violet: Viola sheltonii -
Desert Pansy, Rainier Violet, Sagebrush Violet, Three-nerved Violet: Viola trinervata -
Valley Yellow Violet: Viola vallicola (Viola nuttallii var. vallicola) -