= nonnative, planted and a wildland component, commonly "escapes" cultivation
= nonnative, planted, generally not considered a wildland component or invasive
= a North American native, may naturalize outside its native range
Family: Zygophyllaceae
    Guaiacum angustifolium - soapbush
    Guaiacum coulteri - guayacan
    Larrea tridentata - creosote bush