Cleomella refracta, common names jackass clover or spectacle fruit, is a species of flowering plant in the cleome family, Cleomaceae. 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).Calflora Taxon Report The species occurs in sandy flats, desert scrub and disturbed sites such as roadsides.Flora of North America v 7 p 214
Cleomella refracta is an annual herb up to tall. Leaves are trifoliate, the leaflets ovate (egg-shaped), up to long. Its flowers are yellow.Wislizenus, Friedrich (Frederick) Adolph. Memoir of a Tour to Northern Mexico: connected with Col. Doniphan's Expedition in 1846 and 1847 99. 1848.Correll, D. S. & M. C. Johnston. 1970. Manual of the Vascular Plants of Texas i–xv, 1–1881. The University of Texas at Dallas, Richardson.Holmgren, N. H., P. K. Holmgren & A.J. Cronquist. 2005. Vascular plants of the intermountain west, U.S.A., subclass Dilleniidae. 2(B): 1–488. In A.J. Cronquist, A. H. Holmgren, N. H. Holmgren, J. L. Reveal & P. K. Holmgren (eds.) Intermountain Flora. Hafner Pub. Co., New York.Munz, P. A. & D. D. Keck. 1959. California Flora 1–1681. University of California Press, Berkeley.Shreve, F. & I. L. Wiggins. 1964. Vegetation and Flora of the Sonoran Desert 2 vols. Stanford University Press, Stanford.
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