Opuntia Hybrid, Prickly Pear Cactus

Native to southern AZ and Mexico. Different than O. microdasys, O. rufida, O. santa-rita in that it has larger pads, sprawling growth hab...Read Moreit, turns purple in the wintertime and has a shiny epidermis. Some of the plants in Arizona are very purplish and even more so when stressed. It has all yellow flowers. Opuntiads.com has a good write-up on it. It's origins may be a mixture of a few of those previously mentioned species along with O. chlorotica in the mix. Anderson (2001) and Wikipedia both list lubrica as a synonym of O. microdasys. But Anderson only went down to the species level and not the variety level with O. microdasys.