Verbena
Glandularia goodlingii, Verbena/Vervain family (Verbenaceae)
Flowers: Small lavendar or pink flowers (to 1/2") forming a ball.
Leaves: Dark green, hairy leaves, to 1 1/2" long.
Height: Grows to 12".
Photographed March 17 at Boyce-Thompson Arboretum, near Superior, AZ.
Typically found along roadsides, and on dry flats or slopes.