Lupinus arcticus var. cottonii (C.P. Smith) C.P. Smith
Lupinus arcticus var. cottonii (C.P. Smith) C.P. Smith is a synonym sensu FNA Ed. Comm., 2023a of:
Lupinus polyphyllus var. humicola (A. Nelson) Barneby, an accepted variety name sensu FNA Ed. Comm., 2023a.