Larrea tridentata
Most of the ecoregion is covered in dry shrubland. The principal shrubs are creosote ("Larrea tridentata") and desert burr sage ("Ambrosia dumosa"), with "Jatropha cinerea", palo fierro ("Olneya tesota"), "Acacia brandegeana, Cercidium floridum", and "Pithecellobium undulatum".