I believe it is very hard to identify the tree without any leaves. The bark is remarkable. Safford, Arizona
https://mywebspace.wisc.edu/cwoodwa.../Parkinsonia_aculeata-spines-NSeymour-sm.html Parkinsonia has similar spines. http://www.discoverlife.org/mp/20q?search=Parkinsonia microphylla
Is this bark color suitable for Parkinsonia? I thought Parkinsonia bark contains chlorophyll and is always green?