Cactus wrens were one of the first Sonoran Desert birds I learned when I arrived in Tucson to go to the University of Arizona....
The genus is now Hesperocyparis, but back in the olden days I learned the rough bark Arizona cypress of southeastern Arizona as Cupressus arizonica...
I was sort of right, but mainly wrong about poison ivy’s Latinized name. The species found in Arizona is Toxicodendron rydbergii, formerly Rhus radicans...