Wislizenia refracta, common names jackass clover or spectacle fruit, is one of the three recognized species in its genus Wislizenia, which some authors consider subspecies. It is native to northwestern Mexico and the southwestern United States, particularly Chihuahua, Sonora, trans-Pecos Texas, New Mexico, Arizona, Utah, Nevada and California (Riverside, Kern and San Bernardino Counties). The species occurs in sandy flats, desert scrub and disturbed sites such as roadsides. Wislizenia refracta is an annual herb up to tall. Leaves are trifoliate, the leaflets ovate (egg-shaped), up to long. Its flowers are yellow. References Cleomaceae Flora of the South-Central United States Flora of the Southwestern United States Flora of Mexico Flora without expected TNC conservation status