O. californica may refer to: Oenothera californica, a synonym of the California evening primrose, a flowering plant species native to parts of the southwestern United States and Baja California Orcuttia californica, the California Orcutt grass, a rare grass species native to southern California and northern Baja California Orobanche californica, the California broomrape, a plant species native to western North America Osmia californica, a mason bee species native to North America
See also