Bluish Pricklypear

Griffiths, Proceedings of the Biological Society of Washington 29(3): 13–14, 1916 Isotype; Herbarium; Herbarium; Herbarium. Original Citation  What is Opuntia caesia? Opuntia caesia is a pricklypear cactus that is larger than O. phaeacantha. It may reach 2-3 m across and be about 60-80 cm tall with erect branches that rise from spreading, sprawling branches. Details The […]