Lupinus sulphureus var. kincaidii (C.P. Smith) L.Ll. Phillips
Lupinus sulphureus var. kincaidii (C.P. Smith) L.Ll. Phillips is a synonym sensu FNA Ed. Comm., 2023a of:
Lupinus oreganus A. Heller, an accepted species name sensu FNA Ed. Comm., 2023a.