Olneya tesota, Pea family (Leguminosae)
Flowers: Small pink, purple, and white orchid-like flowers to 1/2" wide in clusters on branch tips.
Leaves: Small blue-green leaflets in parallel rows form leaves, to 2" long.
Height: Tree, may grow to 30'.
Photographed June 1, near Superstition Mountain..
Typically found in open flat areas or on slopes.