Palo verde (parkinsonia torreyana). Small 204×320 Medium 409×640 Large 654×1024 Download Tiff Original 1532×2400 | (946.4 KB) Description 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. Keywords bald desert shrub, naked evergreen tree, palo verde Galleries Flowers and Shrubs: P Source: J. M. Rusk Report of the Secretary of Agriculture for the year 1891 (Washington, DC: Government Printing Office, 1892)