The desertic new niche studied here is seen as expanding north and northeast of Guaymas, and in distant parts of Mexico by the increasing presence of small-leaved invaders. Other indicators of severe desert like Larrea tridentata are increasingly successful by desert niche expansion. Clearly, the genetics and the ecology go hand-in-glove. Irrigation makes the leaf larger almost immediately. It is expected to make it larger over a few decades. It can become a matter of separating genotype from phenotype, realizing that new types like Tiny arise by mutation, selection and fixation, and that the older types are facing extinction as the environment changes radically by manmade hydrolics, mostly lowering the watertable.