Teddy Bear Cholla, Choya Güera
Synonym: Opuntia bigelovii, Opuntia ciribe, Opuntia bigelovii var. ciribe
The stems of this Cholla break loose very easily (it is also called jumping cholla). This cactus is famous for the way their spines get then stuck in the skin of the their victim. Removing the stem has to be done very carefully to avoid sticking more spines, and each spine has then to be removed one by one. By now I am sure you get the picture.
Opuntia ciribe is a form of C. bigelovii endemic to the Sierra de la Giganta, in Baja California Sur.