 The flora of the valley floor consists primarily of Creosote Bush ("Larrea tridentata"), Burrobush ("Ambrosia dumosa"), and several varieties of native bunch grasses.The transition zone of the nearby foothills also contain mixtures of pinyon pine, Joshua tree forests, and concentrated riparian habitat surrounding the small streams descending from the mountain peaks.Wildlife ranges from black bear, mountain lion, and whitetail deer in the mountain and transition zones to the kangaroo rat and the endangered desert tortoise on the valley floor.