The 4” spike of flowers is the only lupine that grows at higher elevations (4500 - 8500 ft). It is the most common and widespread lupine in Arizona.

Santa Catalina Mountains.
Location: Sunset Trail at 7727 ft;
32.42742 N, -110.74156 W.
4/29/15

Notes: Sunset Trailhead 6/12/19.
The images at bottom show a plant in the same location with a white color variation.

See SEINet Pictures and Description