Opuntia macrorhiza (Brittle Cactus, Twistspine Pricklypear, Prickly Pear)

Order Caryophyllales, Family Cactaceae, Genus Opuntia

The wrinkles on the pads of this cactus are diagnostic. Prickly Pear grows along Lower Magnolia, and probably near Gross Reservoir as well. I have probably mentioned that I had a Siamese cat named Opuntia.