| Subject | English | Latin |
| mamm. | Baja California chipmunk | Tamias obscurus |
| mamm. | Baja California rice rat | Oryzomys peninsulae |
| mamm. | Baja California rock squirrel | Citellus atricapillus |
| biol. | California alkaligrass | Puccinellia simplex |
| ichtyol. | California amphioxus | Branchiostoma californiense |
| ichtyol. | California anchoveta | Engraulis mordax |
| ichtyol. | California anchovy | Engraulis mordax |
| ichtyol. | California barracuda | Sphyraena argentea |
| mamm. | California Bat | Myotis californicus |
| biol. | California bentgrass | Agrostis californica |
| food.ind. | California black walnut | Juglans californica |
| reptil. | California black-headed snake | Tantilla eiseni |
| ichtyol. | California blue perch | Medialuna californiensis |
| ichtyol. | California blue smelt | Atherinopsis californiensis |
| biol. | California blue-bell | Phaceli atanecetifolia Benth. |
| nat.res., agric. | California bluebell | Phacelia tanacetifolia |
| biol. | California bluebell | Fhacelia tanacetifolia Benth. |
| ichtyol. | California bonito | Sarda chiliensis |
| biol. | California bottle-brush grass | Hystrix californica |
| bot. | California brome | Bromus carinatus Hook. & Arn. |
| bot. | California brome | Ceratochloa sitchensis Trin. Cope & Ryves |
| bot. | California brome | Ceratochloa carinata Hook. & Arn. Tutin |
| bot. | California brome | Bromus sitchensis Trin. |
| nat.sc., agric. | california burclover | Medicago polymorpha L. |
| nat.sc., agric. | california burclover | Medicago Lenticulata Willd. |
| biol. | California burclover | Medicago denticulata Willd. |
| biol. | California burclover | Medicago hispida Gaertn. |
| ichtyol. | California butterfly ray | Gymnura marmorata |
| biol. | California canarygrass | Phalaris californica |
| biol. | California colubrina | Colubrina californica |
| nat.res. | California condor | Gymnogyps californianus |
| zool. | California Condor | Gymnogyps californianus |
| biol. | California cordgrass | California croton 加州巴豆 californicus |
| biol. | California cordgrass | Spartina leiantha |
| ichtyol. | California corvina | Menticirrhus undulatus |
| reptil. | California desert tortoise | Gopherus agassizii |
| food.ind. | California dewberry | Rubus ursinus |
| ichtyol. | California dogfish | Squalus acanthias |
| ichtyol. | California electric ray | Torpedo californica |
| mamm. | California elephant seal | Mirounga angustirostris |
| med. | California encephalitis | Adenoviridae |
| biol. | California fescue | Festuca californica |
| entomol. | California five-spined ips | Ips confusus |
| entomol. | California flatheaded borer | Melanophila californica |
| entomol. | California flat-headed borer | Melanophila califomica |
| ichtyol. | California flounder | Paralichthys californicus |
| biol. | California giant sequoia | Sequoiadendron giganteum Lindl. Bucholz |
| biol. | California giant sequoia | Sequoiadendron Bucholz. |
| zool. | California Gnatcatcher | Polioptila californica |
| biol. | California grape root worm | Adoxus obscurus L. |
| nat.res. | California gray | Eschrichtius robustus |
| nat.res. | California gray | Eschrichtius glaucus |
| mamm. | California gray whale | Rhachianectes glaucus |
| ichtyol. | California grenadier | Nezumia stelgidolepis |
| mamm. | California grey whale | Eschrichtius gibbosus |
| mamm. | California grey whales | Eschrichtius |
| mamm. | California grey whales | Eschrichtiidae |
| mamm. | California ground squirrel | Citellus beecheyi |
| ichtyol. | California grunion | Leuresthes tenuis |
| zool. | California gull | Larus californicus |
| ichtyol. | California hake | Merluccius productus |
| ichtyol. | California halfbeak | Hyporhamphus rosae |
| ichtyol. | California halfmoon | Medialuna californiensis |
| ichtyol. | California halibut | Paralichthys californicus |
| fish.farm. | california halibut | Paralichthys sagax |
| entomol. | California harvester ant | Pogomyrmex californicus |
| biol. | California harvester-ant | Pogonomyrmex californicus Buck |
| biol. | California hemlock spruce | Tsuga canadensis Sarg. |
| biol. | California hemlock spruce | Tsuga heterophylla Sarg. |
| ichtyol. | California herring | Clupea pallasii |
| biol. | California heyderia | Libocedrus decurrens Torr. |
| biol. | California heyderia | Heyderia decurrens Torr. K. Koch. |
| biol. | California hillside habenaria | Habenaria elegans |
| ichtyol. | California horn shark | Heterodontus francisci |
| ichtyol. | California horse mackerel | Trachurus trachurus capensis |
| ichtyol. | California horse mackerel | Trachurus symmetricus symmetricus |
| biol. | California hyacinth | Brodiae californica Smith |
| biol. | California hyacinth | Brodiae Smith. |
| bot. | California incense-cedar | Libocedrus decurrens |
| bot. | California incense-cedar | Calocedrus decurrens |
| zool. | California jay | Aphelocoma californica californica |
| ichtyol. | California killifish | Fundulus parvipinnis |
| reptil. | California king snake | Lampropeltis zonata |
| ichtyol. | California kingcroaker | Menticirrhus undulatus |
| ichtyol. | California lancelet | Branchiostoma californiense |
| ichtyol. | California lanternfish | Symbolophorus californiensis |
| nat.sc., agric. | California laurel | Umbellularia californica |
| mamm. | California leaf-nosed Bat | Macrotus californicus |
| reptil. | California legless lizard | Anniella pulchra |
| ichtyol. | California lizardfish | Synodus lucioceps |
| reptil. | California lyre snake | Trimorphodon Uta |
| ichtyol. | California mackrel | Scomber japonicus |
| ichtyol. | California mackrel | Pneumatophorus |
| entomol. | California maple aphid | Periphyllus californiensis |
| biol. | California melica | Melica californica |
| ichtyol. | California moray | Gymnothorax mordax |
| reptil. | California mountain king snake | Lampropeltis zonata |
| mamm. | California mouse | Peromyscus californicus |
| biol. | California muhly | Muhlenbergia californica |
| nat.res. | California murre | Uria troille californica |
| food.ind. | California mussel | Mytilus californianus (common mussel) |
| mamm. | California myotis | Myotis californicus |
| ichtyol. | California needlefish | Tylosurus acus |
| ichtyol. | California needlefish | Strongylura exilis |
| biol. | California needlegrass | Stipa pulchra |
| reptil. | California newt | Taricha torosa |
| biol. | California nightshade | Solanum californicum |
| entomol. | California oakworm | Phryganidia californica |
| biol. | California pear sawfly | Pristiphora abbreviata Hartig |
| entomol. | California pear slug sawfly | Nematus abbreviatus |
| entomol. | California pear slug sawfly | Micronematus abbreviatus |
| biol. | california pepper tree | Schinus molle L. |
| biol. | California peppertree | Schinus molle L. |
| nat.res. | California pepper-tree | Schinus molle |
| biol. | California peppertree | Schinus molle |
| ichtyol. | California pilchard | Sardinops caeruleus |
| ichtyol. | California pilchard | Sardinops sagax |
| life.sc., fish.farm. | California pilchard | - |
| biol. | California pitcher plant | Darlingtonia californica sp. |
| mamm. | California pocket mouse | Perognathus californicus |
| ichtyol. | California pompano | Palomets simillimus |
| ichtyol. | California pompano | Peprilus simillimus |
| reptil. | California pond turtle | Clemmys Mantipus |
| nat.res. | California poppy | Eschscholzia californica Cham. |
| biol. | California-poppy | Eschscholtzia californica Cham. |
| biol. | California-poppy | Eschscho-Itzia Cham. |
| mamm. | California porpoise | Phocoena sinus |
| entomol. | California prionus | Prionus californicus |
| biol. | California prionus | Prionus californicus Mots. |
| bot. | California privet | Ligustrum ovalifolium |
| biol. | California privet | Ligustrum ovalifolium Hassk. |
| ornit. | California quail | Lophortyx californicus |
| ornit. | California quail | Callipepla californica |
| ichtyol. | California rattail | Nezumia stelgidolepis |
| ichtyol. | California ray | Raja inornata |
| ichtyol. | California red rock crab | Cancer antennarius |
| biol. | California red scale | Aspidiotus aurantii Maskell |
| biol. | California red scale | Aspidiotus coccineus Genn |
| nat.res., agric. | California red scale | Aonidiella aurantii |
| entomol. | California red scale | Aonidiella auranti |
| biol. | California red scale | Aonidiella aurantii (Maskell) |
| biol. | California red scale | Aonidiella aurantii Maskell |
| biol. | California red scale | Chrysomphalus aurantii Maskell |
| mamm. | California red-backed mouse | Clethrionomys californicus |
| ichtyol. | California redfish | Pimelometopon pulcher |
| forestr. | California redwood | Sequoia sempervirens |
| biol. | California redwood | Sequoia sempervireus Lindl. |
| ichtyol. | California roach | Hesperoleucus symmetricus |
| food.ind. | California rock lobster | Panulirus interruptus |
| ichtyol. | California salema | Xenistius californiensis |
| entomol. | California salt marsh mosquito | Aedes squamiger |
| biol. | California salt-marsh mosquito | Aёdes squamiger Coq. |
| ichtyol. | California sardine | Sardina coerulea |
| biol. | California satintail | Imperata hookeri |
| life.sc., nat.res., agric. | California scale | Quadraspidiotus perniciosus |
| life.sc., nat.res., agric. | California scale | Aspidiotus perniciosus |
| entomol. | California scale | Quadraspidiotus pemiciosus |
| biol. | California scale | Diaspidiotus perniciosus Comst. |
| ichtyol. | California scorpionfish | Scorpaena guttata |
| zool. | California sea elephant | Mirounga angustirostris Gill. |
| zool. | California sea lion | Zalophus californianus Lesson |
| zool. | California sea lion | Zalophus californianus |
| ichtyol. | California sea trout | Hexagrammos decagrammus |
| ichtyol. | California sheephead | Semicossyphus pulcher |
| ichtyol. | California sheephead | Pimelometopon pulcher |
| ichtyol. | California sheephead | Pinguilabrum punctatum |
| ichtyol. | California shrimp | Crangon franciscorum |
| reptil. | California slender salamander | Batrachoseps attenuatus |
| ichtyol. | California slickhead | Alepocephalus tenebrosus |
| biol. | California slim nettle | Urtica gracilis var. holosericea |
| ichtyol. | California smelt | Spirinchus thaleichthys |
| ichtyol. | California smelt | Atherinopsis californiensis |
| ichtyol. | California smooth dogfish | Mustelus californicus |
| ichtyol. | California smoothtongue | Leuroglossus stilbius |
| ichtyol. | California sole | Parophys vetulus |
| ichtyol. | California sole | Parophrys vetulus |
| ichtyol. | California sole | Eopsetta grigorjewi |
| ichtyol. | California soles | Parophrys |
| food.ind. | California spiny lobster | Panulirus interruptus |
| zool. | California spotted-owl | Strix occidentalis occidentalis |
| ichtyol. | California stingray | Myliobatis californicus |
| reptil. | California striped racer | Masticophis Latastia |
| bot. | California sugar pine | Pinus lambertiana |
| biol. | California swamp pine | Pinusmuricata D. Don. |
| ichtyol. | California swell shark | Cephaloscyllium ventriosum |
| reptil. | California tantilla | Tantilla eiseni |
| biol. | California tent caterpillar | Malacosoma californicum Pack. |
| ornit. | California thrasher | Toxostoma redivivum |
| ichtyol. | California tomcod | Microgadus proximus |
| ichtyol. | California tonguefish | Symphurus atricaudus |
| ichtyol. | California torpedo | Torpedo californica |
| biol. | California torreya | Torreya Cali fornia Torr. |
| biol. | California tortoise shell | Nymphalis california Bdv. |
| entomol. | California tortoiseshell | Nymphalis califomica |
| zool. | California Towhee | Pipilo crissalis |
| reptil. | California tree frog | Hyla cadaverina |
| entomol. | California urocerus | Urocerus californicus |
| biol. | California vench | Vicia californica |
| mamm. | California vole | Microtus californicus |
| bot. | California walnut | Juglans californica |
| biol. | California walnut | Juglans californica S. Wats. |
| reptil. | California whiptail | Cnemidophorus Thrasops |
| ichtyol. | California whiting | Menticirrhus undulatus |
| bot. | California yellow pine | Pinus ponderosa |
| ichtyol. | California yellowtail | Seriola dorsalis |
| ichtyol. | California yellowtail | Seriola lalandi |
| ichtyol. | giant California black sea bass | Stereolepis gigas |
| ichtyol. | great California flounder | Platichthys stellatus |
| environ., nat.res. | Gulf of California harbour porpoise | Phocoena sinus |
| mamm. | Gulf of California harbour porpoise | Phocoena sinus |
| nat.res. | Lower California pronghorn | Antilocapra americana penindularis |
| reptil. | lower California rattlesnake | Crotalus enyo |
| ichtyol. | Northern California lamprey | Entosphenus folletti |
| environ., nat.res. | southern sea otter or California sea otter | Enhydra lutris nereis |
