a thorny desert bush, probably astragalus, in the texas rock desert in big bend np

thorns closeup plant desert nature bush thorn wild thorny sharp prickly flora arid needle barbed twigs acacia tree dangerous unsafe spiky spike branch astragalus corynopuntia southwest eudicots caryophyllales cactaceae opuntioideae cylindropuntieae marenopuntia club chollas cylindropuntia grusonia vegetation cacti cactus cholla opuntia aggeria grahamii