Family: Nightshade (or potato) (Solanaceae)
Size: 4-5 in. wide
Other names: Desert Thornapple
Notes: 4 species of Datura in Arizona.
Desert thornapple entry in the online edition of An Illustrated Guide to Arizona Weeds, Kittie F. Parker, University of Arizona Press.
Photos of this plant are found on the CalPhoto plant pictures website.