Larrea tridentata
Doña Ana County lies within the Chihuahuan Desert ecoregion, and the vegetation surrounding the built portions of the city are typical of this setting; it includes creosote bush ("Larrea tridentata"), soaptree ("Yucca elata"), tarbush ("Flourensia cernua"), broom dalea ("Psorothamnus scoparius"), and various desert grasses such as tobosa ("Hilaria mutica" or "Pleuraphis mutica") and black grama ("Bouteloua eriopoda").