Engelmann prickly pear References Images Engelmann prickly pear cactus Ask Anything Homework Help Also known as: Opuntia engelmannii Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: prickly pearTwo of the best-known species, Engelmann prickly pear (O. engelmannii) and the beaver tail cactus (O. basilaris), commonly occur in the southwestern United States. Read MoreTwo of the best-known species, Engelmann prickly pear (O. engelmannii) and the beaver tail cactus (O. basilaris), commonly occur in the southwestern United States. Read More