Partly-spined Pricklypear

Griffiths, Bulletin of the Torrey Botanical Club 43(2): 89, 1916 Holotype Original Citation What is Opuntia semispinosa? Opuntia semispinosa is a coastal pricklypear cactus from southern California and Mexico that has been variously lumped into O. occidentalis, O. littoralis, or even other Opuntias of Southern California. We accept it as a stand-alone species. Details Plants may reach 1 or 1.4 […]