Texas Cactus (Peyote) . ("Lophophora williamsii.") Google search: "Lophophora is a genus of spineless, button-like cacti native to Texas from Presidio county south right along the Rio Grande River to Starr County, Texas. Lophophora williamsii or Peyote is a small, spineless cactus with psychoactive alkaloids, particularly mescaline. Wikipedia." (Pinned both to Nature - P&F-Succulents-*Odd Shapes/Appearances, N.O.C... & Texas Wildflowers....")
They say that peyote talks to you in your time of need.Many have witnessed contact with the Peyote spirit while trapped in the desert with no food or water.The spirit tells you to seek them out and to eat.