inhabits moist, mountainous areas of the westernmost states. Plants grow relatively tall, and have larger-than average leaves, quite variable in the number of leaflets, between 5 and 17. All plant parts are hairless or only very lightly hairy. Leaves grow around the base and along the stems, on stalks up to two inches long. The inflorescence occupies the upper 2 to 15 inches of the stems.
Flowers are often whorled, attached by green, bracted pedicels around half an inch long. Flowers are also around half an inch in length. Petals are colored various shades of blue and purple, and white, and the banner spot is white to pale yellow.Var pallidipes
has leaflets which are lightly hairy on the upper surface, var burkei
has hairless leaflets numbering 5 to 11, while var polyphyllus
has hairless leaflets numbering 9 to 17.