Scientific Name: Parkinsonia (formerly Cercidium) microphyllum and Parkinonia (Cercidium) floridum (respectively) 
Geographic range:native to southeastern California, southern Arizona, and northwestern Mexico.
Habit: Generally found in desert washes, they grow from 20-40 feet tall. The blue palo verde has a taller habit, requires more water, but also has more spectacular blossoms.
The tree can photosynthesize through its green bark, which is important since it drops its leaves during the warm season in response to fall cooling. It is a staple in the Sonoran desert, where it provides cover for sanguaro cactus, which greatly outlives it.
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