There are lots of common names for this Eastern United States native wildflower:  Carolina Lupine, Aaron's Rod, False Lupine, and Blue Ridge Buckbean, to name just a few.  The foliage of Thermopsis caroliniana is similar to Baptisia -  gray-green and pea-like -  and the bright yellow blooms are similar to lupines.  It is a perennial that I have grown for many years, and I have never grown tired of it.  Thermopsis makes an architectural statement in the garden, too, growing from four to six feet.  Give it more sun than shade, and you will be rewarded with lots of blooms.  Zones 3-10.  Quarts.