Viola longipes Nutt.
Viola adunca subsp. ashtonae M.S.Baker
Viola montanensis Rydb.
Viola mamillata Greene
Viola huronensis Greene
Viola uncinulata Greene
Viola adunca subsp. uncinulata (Greene) Applegate
Viola canina var. puberula S.Watson
Viola canina var. oxyceras S.Watson
Viola unguiculata Greene
Viola tidestromii Greene
Viola petrophila Greene
Viola adunca var. uncinulata (Greene) C.L.Hitchc.
Viola fulcrata Greene
Viola inamoena Greene
Viola oreophila Greene
Viola cordulata Greene
Viola odontophora Rydb.
Viola adunca f. albiflora Vict. & J.Rousseau
Viola desertorum Greene
Lophion aduncum Nieuwl. & Lunell
Viola retroscabra Greene
Lophion aduncum var. glabrum (Brainerd) Nieuwl. & Lunell
Viola demissa Greene
Viola canina var. longipes (Nutt.) S.Watson
Viola subvestita Greene
Viola drepanophora Greene
Viola clarkiae A.Nelson
Viola bellidifolia subsp. valida M.S.Baker
Viola adunca f. candida Lepage
Viola verbascula Greene
Viola puberula (S.Watson) Howell
Viola adunca var. cascadensis (M.S.Baker) C.L.Hitchc.
Viola adunca var. longipes Rydb.
Viola oxyceras (S.Watson) Greene
Viola adunca var. kirkii V.G.Durán
Viola oxysepala Greene
Viola adunca var. glabra Brainerd
Viola adunca f. glabra (Brainerd) G.N.Jones
Viola compacta Greene
Viola adunca subsp. radicosa M.S.Baker
Viola adunca subsp. oxyceras (S.Watson) Piper
Viola cascadensis M.S.Baker
Viola oreocallis Greene
Viola cardaminefolia Greene