@Ituri oh ok. Thank you. Pardon my digression, but have you visited any botanical gardens or arboretums in the Tucson area (ie The University of Arizona Arboretum, Tohono Chul, or the Tucson Botanical Garden)?
@Ituri let me know when you are in the area again. Of the three mentioned, the University of Arizona Arboretum despite being dispersed throughout the campus with placards is my favorite. Have you been to the botanical garden and arboretum on the campus of Arizona State University or the Desert Botanical Garden in Papago Park?