Opuntia covillei

Britton and Rose, Smithsonian Miscellaneous Collections 50: 532, 1908 Herbarium; Herbarium; Herbarium; Photograph (Britton and Rose, 1919); Drawing (JJ Thornber; The Fantastic Clan of the Cactus Family) What is O. covillei? Opuntia covillei is a medium-sized, California prickly pear cactus that grows in angular shapes to 1 m across. Details O. covillei cladodes are pale green … Read moreOpuntia covillei

Opuntia oricola

Philbrick, Cactus and Succulent Journal (U.S.) 36(6): 163, 1964 Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium  What is Opuntia oricola? Opuntia oricola is a medium-sized, easy-to-recognize prickly pear cactus found in coastal CA.  Details O. oricola grows to 3 m tall. The pads are 15 to 26 cm long and 12 to 19 cm wide, elliptic … Read moreOpuntia oricola

Opuntia occidentalis

Opuntia occidentalis is found along the coast of southern CA…

Opuntia littoralis

(Engelmann) Britton & Rose, Smithsonian Miscellaneous Collections 50: 529, 1908 Lectotype; Syntype What is Opuntia littoralis? Opuntia littoralis is a California prickly pear cactus that was originally described as a variety of O. engelmannii, but the two species are not closely related. Details O. littoralis plants are low and spreading, but they send branches upright … Read moreOpuntia littoralis

Opuntia semispinosa

Griffiths, Bulletin of the Torrey Botanical Club 43(2): 89, 1916 Holotype Details Opuntia semispinosa is a coastal prickly pear cactus from southern California and Mexico that has been variously lumped into O. occidentalisO. littoralis, or even other opuntias of coastal California. We accept it as a stand-alone species. At one time there was much interest in the plant as a … Read moreOpuntia semispinosa

Opuntia vaseyi

(J.M. Coulter) Britton & Rose, Smithsonian Miscellaneous Collections 50: 532, 1908 Herbarium (holotype, deposited as O. magenta); Herbarium (lectotype, deposited as O. mesacantha vaseyi); Herbarium; Herbarium; Herbarium Details Opuntia vaseyi is a low, spreading, bushy prickly pear cactus found “along and near the coast of southern California.” It often forms thickets 25 to 40 cm tall. … Read moreOpuntia vaseyi

Opuntia rugosa

Griffiths, Proceedings of the Biological Society of Washington 27(6): 27, 1914 Holotype; Isotype Details Opuntia rugosa is a prickly pear cactus that was reported from Pomona, CA in the early 1900s and apparently never again. It is a low, ascending, and spreading cactus to about 20 to 30 cm tall. It is a about the size of … Read moreOpuntia rugosa