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CISAC has compiled the list below of over 1,700 species known to be invasive in California or a potential threat for introduction to the state. Please use the comment form below to let us know about: taxa that should be added or removed; species information that you would change; and species that you think should be a high priority for having a scorecard completed (choose Review Scorecards to see the list of scorecards already drafted). Make sure to click Save. Previous comments are displayed at the bottom of the page.

Download Species List (.csv) (to open in a Spreadsheet program)
This data download is provided to aid in the review of the draft invasive species list. We discourage other use of this data until it has been revised and finalized.

Scientific Name Common Namesort icon Type Subtype Extent Risk of Introduction First Source
Puccinia graminis f. sp. tritici Wheat stem rust (Uganda 99 strain)/Black rust disease fungus not present moderate National IS Info
Puccinia striiformis Wheat stripe rust disease fungus widespread n/a (already in CA) National IS Info
Closterovirus wylv or Prosopis fiebrigii ? Wheat Yellow Leaf Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Prosopis fiebrigii or Closterovirus wylv ? Wheat Yellow Leaf Virus disease virus VALUE REQUIRED VALUE REQUIRED No list
Unknown pathogenic bacterium Wheat Yellowing Stripe Bacterium disease bacterium VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Morone chrysops White bass vertebrate fish limited n/a (already in CA) Cal Code 14:671
Bryonia alba white bryony plant herbaceous not present moderate WA Weed List
Holotrichia mindanaona white grub arthropod beetle not present moderate USDA Plant/Pest
Phyllophaga spp. white grubs arthropod beetle limited n/a (already in CA) USDA Plant/Pest
Phytalus spp. white grubs arthropod beetle limited n/a (already in CA) USDA Plant/Pest
Marrubium vulgare white horehound plant herbaceous widespread n/a (already in CA) Cal-IPC list
Pseudaulacaspis pentagona white peach scale arthropod scale, aphid not present high CDFA (reg. A)
Cronartium ribicola White pine blister rust disease fungus limited n/a (already in CA) ForestPests.org
Stereum hiugense White Rot disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Baculovirus complex WSBV White Spot Syndrome Baculovirus Complex of fish disease virus VALUE REQUIRED VALUE REQUIRED No list
Bactrocera albistrigata White Striped Fruit Fly arthropod fly not present low CDFA (reg. A)
Cacatua alba White-crested cockatoo vertebrate bird VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Solanum marginatum white-margined nightshade plant woody limited n/a (already in CA) CDFA
Geomyces sp. White-Nose Syndrome of bats disease fungus not present low National IS Info
Nasua narica White-nosed coati vertebrate mammal VALUE REQUIRED VALUE REQUIRED CDFA Vert List
Copsychus malabaricus White-rumped shama vertebrate bird VALUE REQUIRED VALUE REQUIRED Witmer et al
Lepus townsendii White-tailed jackrabbit vertebrate mammal VALUE REQUIRED VALUE REQUIRED Witmer et al
Lagopus leucurus White-tailed ptarmigan vertebrate bird VALUE REQUIRED VALUE REQUIRED No list
Naupactus leucoloma whitefringed beetle arthropod beetle limited n/a (already in CA) CDFA (reg. B)
Naupactus spp. whitefringed beetles arthropod beetle limited n/a (already in CA) CDFA (reg. B)
Orgyia leucostigma whitemarked tussock moth arthropod butterfly, moth not present moderate CDFA (reg. A)
Carthamus leucocaulos whitestem distaff thistle plant herbaceous not present moderate CDFA
Erodium moschatum whitestem filaree plant herbaceous widespread n/a (already in CA) Weeds of CA
Carum carvi wild caraway plant herbaceous not present high CO Weed List
Daucus carota wild carrot plant herbaceous widespread n/a (already in CA) WA Weed List
Anthriscus sylvestris wild chervil plant herbaceous not present high WA Weed List
Mirabilis nyctaginea wild four o-clock plant herbaceous limited n/a (already in CA) WA Weed List
Allium vineale wild garlic plant herbaceous limited n/a (already in CA) CDFA
Tagetes minuta wild marigold plant herbaceous not present moderate CDFA
Sinapis arvensis wild mustard plant herbaceous widespread n/a (already in CA) Cal-IPC list
Avena fatua wild oat plant grass widespread n/a (already in CA) Cal-IPC list
Panicum miliaceum wild proso millet plant grass limited n/a (already in CA) CO Weed List
Raphanus raphanistrum wild radish plant herbaceous widespread n/a (already in CA) Weeds of CA
Rubus moluccanus wild raspberry plant woody not present low USDA Plant/Pest
Carthamus oxyacantha wild safflower plant herbaceous limited n/a (already in CA) USDA Plant/Pest
Saccharum spontaneum wild sugarcane plant grass not present low USDA Plant/Pest
Brenneria salicis Willow Watermark Disease disease bacterium VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Spermacoce alata winged false buttonweed plant herbaceous not present low USDA Plant/Pest
Candidatus phytoplasma Witches broom disease of lime disease phytoplasma not present VALUE REQUIRED APHIS OPIS
Crinipellis perniciosa Witches Broom Fungus in cocoa disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Striga asiatica witchweed plant herbaceous not present moderate CDFA
Striga spp. witchweed plant herbaceous not present high USDA Plant/Pest
Ischnoderma rosulata Wood decay disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Phlebia chrysocrea Wood decay disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Trametes versicolor Wood decay disease fungus VALUE REQUIRED VALUE REQUIRED USDA pest
Ophiostoma pluriannulatum Wood stain disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Ceratocystis novae-zelandiae wood-staining disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Carthamus lanatus woolly distaff thistle plant herbaceous widespread n/a (already in CA) CDFA
Salsola vermiculata wormleaf salsola plant herbaceous not present low CDFA
Hieracium x floribundum yellow devil hawkweed plant herbaceous not present moderate MT Weed List
Flavivirus 3 Yellow Fever disease virus VALUE REQUIRED VALUE REQUIRED CIDRAP
Nymphoides peltata yellow floating heart plant herbaceous limited n/a (already in CA) OR Weed List
Setaria pumila yellow foxtail plant grass widespread n/a (already in CA) Weeds of CA
Parentucellia viscosa yellow glandweed plant herbaceous limited n/a (already in CA) Cal-IPC list
Hieracium caespitosum yellow hawkweed plant herbaceous not present high ID Weed List
Conogethes punctiferalis yellow peach moth arthropod butterfly, moth not present moderate USDA Plant/Pest
Hemileia vastatrix Yellow ring mosaic agent (assoc. with Jasminum) disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Centaurea solstitialis yellow starthistle plant herbaceous widespread n/a (already in CA) CDFA
Linaria vulgaris yellow toadflax plant herbaceous limited n/a (already in CA) Cal-IPC list
Paroaria capitata Yellow-billed cardinal vertebrate bird VALUE REQUIRED VALUE REQUIRED Witmer et al
Amazona ochrocephula Yellow-crowned Amazon vertebrate bird VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Tiaris olivacea Yellow-faced grassquit vertebrate bird VALUE REQUIRED VALUE REQUIRED Witmer et al
Serinus mozambicus Yellow-fronted canary vertebrate bird VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Amazona oratrix Yellow-headed Amazon vertebrate bird VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Gonatodes albogularis Yellow-headed gecko vertebrate reptile VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Cichlasoma salvini Yellowbelly cichlid vertebrate fish not present low Cal Code 14:671
Unknown pathogeic coronavirus- and arterivirus-like virus Yellowhead disease of shrimp disease virus VALUE REQUIRED VALUE REQUIRED No list
Cirsium ochrocentrum yellowspine thistle plant herbaceous limited n/a (already in CA) CDFA
Alyssum murale yellowtuft plant herbaceous not present moderate OR Weed List
Alyssum corsicum yellowtuft plant herbaceous not present moderate OR Weed List
Lomentaria hakodatensis yendo plant algae VALUE REQUIRED VALUE REQUIRED Hoffman NOAA
Cataenococcus olivaceus yucca mealybug arthropod scale, aphid limited n/a (already in CA) CDFA (reg. B)
Dreissena polymorpha Zebra mussels invertebrate aquatic mollusk, freshwater limited n/a (already in CA) CAISMP