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DistributionTarbush occurs primarily on plains and mesas throughout the Chihuahuan Desert, the second largest desert in North America. The Chihuahuan Desert occurs in southeastern Arizona, southern New Mexico, southwestern Texas, and Mexico [10,65,118]. In Mexico, tarbush occurs in the states of Sonora, Chihuahua, Coahuila, Durango, San Luis Potosi, and Zacatecas . One publication stated that tarbush occurs in California , but this appears to be erroneous, as tarbush is not included in California floras. NatureServe provides a distributional map of tarbush.