Lupinus congdonii (C.P.Sm.) D.B.Dunn
Lupinus polycarpus Greene
Lupinus bicolor subsp. pipersmithii D.B.Dunn (A.Heller)
Lupinus bicolor var. trifidus (S.Watson) C.P.Sm.
Lupinus bicolor subsp. marginatus D.B.Dunn
Lupinus bicolor subsp. umbellatus D.B.Dunn (Greene)
Lupinus bicolor var. rostratus (Eastw.) Jeps.
Lupinus bicolor subsp. tridentatus D.B.Dunn (Eastw.)
Lupinus micranthus var. congdonii C.P.Sm.
Lupinus bicolor var. micranthus B.Boivin
Lupinus polycarpus var. grandiflorus Davidson & Moxley
Lupinus bicolor var. pipersmithii (A.Heller) C.P.Sm.
Lupinus sabulosus A.Heller
Lupinus bicolor subsp. tridentatus var. rostratus Unknown author
Lupinus bicolor subsp. tridentatus var. tridentatus Unknown author
Lupinus bicolor subsp. umbellatus var. trifidus Unknown author
Lupinus bicolor subsp. umbellatus var. umbellatus Unknown author
Lupinus pipersmithii A.Heller
Lupinus micranthus var. trifidus S.Watson
Lupinus bicolor var. umbellatus (Greene) C.P.Sm.
Lupinus trifidus Torr. ex S.Watson
Lupinus umbellatus Greene
Lupinus bicolor subsp. microphyllus (S.Watson) D.B.Dunn
Lupinus bicolor var. microphyllus (S.Watson) C.P.Sm.
Lupinus micranthus var. microphyllus S.Watson
Lupinus hirsutulus Greene
Lupinus micranthus var. bicolor (Lindl.) S.Watson
Lupinus strigulosus Gand.
Lupinus rostratus Eastw.
Lupinus bicolor var. tridentatus Eastw. ex C.P.Sm.
Lupinus bicolor var. tetraspermus C.P.Sm.