P. californicus may refer to: Paralichthys californicus, the California halibut or California flounder, a large-tooth flounder species native to the waters of the Pacific Coast of North America Parastichopus californicus, a synonym of the California sea cucumber (Apostichopus californicus), a sea cucumber species found from the Gulf of Alaska to Southern California Penstemon californicus, the California penstemon, a plant species native to Baja California Peromyscus californicus, the California mouse, a rodent species found in north-western Mexico and central to southern California Phidippus californicus, a jumping spider species found in the southwestern United States Platystemon californicus, the creamcup, a plant species native to Oregon, California, Arizona, Utah and Baja California Pleuropogon californicus, the annual semaphoregrass, a grass species endemic to northern California Poebrodon californicus, an extinct terrestrial herbivore species endemic to North America from the Pliocene through Pleistocene Poecilanthrax californicus, a fly species in the genus Poecilanthrax Pogonomyrmex californicus, an ant species in the genus Pogonomyrmex
See also List of Latin and Greek words commonly used in systematic names#C