Lupinus pusillus, the rusty lupine[2] or dwarf lupine, is an annual plant in the legume family (fabaceae) found in the Colorado Plateau and Canyonlands region of the southwestern United States(California),[3]: 159  and north to Montana.

[3]: 159 Leaves are compound palmate with 3-9 1⁄2 to 1+1⁄2 inches (1.3 to 3.8 cm) long inversely lance- shaped leaflets.

[3]: 159 Flowers are in stalks of 4-38 and bluish to purple or bicolored, with a yellow spot on the upper petal.

[3]: 159 It can be found in desert shrubland and pinyon juniper woodland communities, from as far north as Washington, to California, and throughout the southwest.

[3]: 159 When growing in reddish sand, the blue flowers make a striking contrast with the sun at a low angle.