Show ancient and the cactus has bos a clean cut pedigree tv aich goes back bach farther than the lines ot of any human family but it Is found growing wild only in the western hemisphere it Is americas most striking expression of plant life developing defense armor when forced to live under arid conditions doctor jarolyn told the desert forum in lle like manner or dr thomas macbride defines it as lin an ancient adaptation to an ancient desert possibly pre and it takes aalon of the world just as east cast as the alie world becomes desera desert |