Opuntia lindheimeri is s cactus which is treated by some botanists as a species separate and distinct from O. engelmannii. Britton and Rose also considered that O. lindheimeri is a stand-alone species as did Engelmann who described it in 1850. The point is not settled, and other botanists accept O. lindheimeri as a variety of O. engelmannii. Whatever their taxonomic relationship, the plants are easily distinguished when grown side-by-side and do not gener