The flowers are 1/2 inch (1.3 cm) wide and have 5 petals. The top petal is white, and the other 4 petals are yellow. The leaves are bipinnately compound with 5 to 7 pairs of tiny, oval leaflets. The branches are spine-tipped. Some of the branches are shed during times of drought, and there are typically branch scars on the trunk and fallen branches under the trees. The photosynthesizing bark is smooth and yellowish green in color.

Santa Catalina Mountains.
Sabino Canyon Recreation Area
Location: Shoulder of tram road near intersection with Bear Canyon Road.
4/19/16

See SEINet Pictures and Description

See FireFly Forest Pictures and Description