Lupinussulphureus Dougl. ex Hook. ssp. sulphureus Lupinussulphureus Dougl. ex Hook. var. applegateanus C.P. Sm. Lupinussulphureus Dougl. ex Hook. var. echleranus C.P. Sm.
Additional Resources:
CalPhotos:Lupinussulphureus var. sulphureus photos.
USDA Plants:Lupinussulphureus var. sulphureus information.