Palo verde (parkinsonia torreyana).
The palo verde is a very peculiar naked evergreen tree. It has small freen leaves in the rainy season, but these soon drop off and the smooth, light green surface makes it appear as if stripped of bark as well as leaves.
GalleriesFlowers and Shrubs: P
J. M. Rusk Report of the Secretary of Agriculture for the year 1891 (Washington, DC: Government Printing Office, 1892)