I found out there are many varieties of this plant. There are more than 72 species of Astragalus in Arizona. So that's why we just use the generic. The key on this one is the leaves. It does flower into a Loco or Milk Vetch.

I'm leaning toward the Milk Vetch because of the leaves. https://cals.arizona.edu/yavapaiplants/ ... imagenum=4