Are Fremontodendron and Mitella both native to the southwestern United States and northwest Mexico?
Mitella Mitella is a genus of flowering plants known as miterworts or bishop's caps. "Mitella" species are native to temperate and arctic North America and Asia.
Fleischmannia sonorae Fleischmannia sonorae, the Sonoran slender-thoroughwort or Sonoran thoroughwort, is a North American species of flowering plant in the sunflower family. It is native to western Mexico from Sonora and Chihuahua as far south as Michoacán, as well as from the southwestern United States (Arizona and New Mexico).