While there are some Lupinus perennis (Wild Lupine) in the state, most of the pretty lupines spotted along the road are the Lupinus polyphyllus (Large-leaved Lupine), a native plant to the Western US but introduced by gardeners to this region. But even though they got loose, they are still pretty.
Pretty Lupines
I love to see all the Lupines growing wild along the roadsides. Wish mine were those pretty pink and purple colors but the ones I have in my flower bed are white.