Butter and Eggs. (Dalmatian Toadflax.)
Scrophulariaceae. Figwort Family.
SEINet link to this flower. May, widespread in the neighborhood, off lawn.
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May include gaphics and hyperlinks.
Credit: Plants of Arizona, Anne Orth Epple updated by John F Wiens. Photos by Lewis E. Epple. A Falcon Guide. 2nd ed 2012 (outside photos with text). Middle photo is from Wikipedia (linked), and the other is my own.