Home

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 Namesort icon Common Name Type Subtype Extent Risk of Introduction First Source
Planococcus lilacinus coffee mealybug arthropod scale, aphid not present high CDFA (reg. A)
Planococcus ficus vine mealybug arthropod scale, aphid limited n/a (already in CA) CDFA (reg. B)
Pittosporum undulatum Victorian box plant woody limited n/a (already in CA) Med. plants list
Pissodes nemorensis eastern pine weevil arthropod beetle not present high CDFA (reg. A)
Piptatherum miliaceum smilograss plant grass widespread n/a (already in CA) Cal-IPC list
Pinnaspis strachani lesser snow scale arthropod scale, aphid not present high CDFA (reg. A)
Pinnaspis buxi boxwood scale arthropod scale, aphid not present high CDFA (reg. A)
Picris hieracioides hawkweed oxtongue plant herbaceous not present moderate WA Weed List
Picris echioides bristly oxtongue plant herbaceous widespread n/a (already in CA) Cal-IPC list
Phytoreovirus rgdv Rice Gall Dwarf Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Phytoreovirus rdv Rice Dwarf Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Phytoplasma ulmi Elm yellows disease phytoplasma VALUE REQUIRED VALUE REQUIRED No list
Phytoplasma scwl Sugarcane White Leaf Phytoplasma disease phytoplasma VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Phytoplasma ryd-mlo Rice Yellow Dwarf disease phytoplasma VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Phytoplasma rus Rubus stunt disease phytoplasma VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Phytoplasma parastolbur-mlo Parastolbur disease phytoplasma VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Phytoplasma md Mulberry Dwarf disease phytoplasma VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Phytoplasma fd Flavescence doree disease phytoplasma VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Phytoplasma esfy European Stone Fruit Yellows disease phytoplasma VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Phytoplasma eay European Aster Yellows disease phytoplasma VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Phytoplasma bn Black wood disease phytoplasma VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Phytophthora ramorum Sudden oak death disease oomycete limited n/a (already in CA) APHIS OPIS
Phytophthora quercina Oak disease disease oomycete VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Phytophthora kernoviae Rhododendron Phytopthora disease disease oomycete VALUE REQUIRED VALUE REQUIRED No list
Phytophthora infestans Late Blight disease oomycete VALUE REQUIRED VALUE REQUIRED No list
Phytophthora fragariae Red Stele disease oomycete VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Phytophthora cinnamomi Root Rot disease oomycete VALUE REQUIRED VALUE REQUIRED No list
Phytophthora alni Alder Phytophthora disease oomycete not present moderate APHIS OPIS
Phytophthora alni Alder Phytophthora disease fungus not present low NAPPO
Phytomyza ilicis holly leafminer arthropod fly limited n/a (already in CA) CDFA (reg. B)
Phytomyza ilicicola native holly leafminer arthropod fly limited n/a (already in CA) CDFA (reg. B)
Phytolacca americana common pokeweed plant herbaceous widespread n/a (already in CA) Cal-IPC list
Phytalus spp. white grubs arthropod beetle limited n/a (already in CA) USDA Plant/Pest
Physoderma zeae-maydis Brown Spot of Corn disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Physalis viscosa grape groundcherry plant herbaceous limited n/a (already in CA) CDFA
Physalis longifolia long-leaf groundcherry plant herbaceous not present moderate CDFA
Phylloxera devastatrix pecan phylloxera arthropod scale, aphid not present moderate CDFA (reg. A)
Phyllosticta colocasiophila Phyllosticta Leafspot disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Phyllophaga spp. white grubs arthropod beetle limited n/a (already in CA) USDA Plant/Pest
Phyllophaga congrua May beetle arthropod beetle not present moderate CDFA (reg. A)
Phyllody Agent Phyllody Agent disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Phrynosoma cornutum Texas horned lizard vertebrate reptile VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Phragmites australis common reed plant grass limited n/a (already in CA) Cal-IPC list
Phoracantha spp. eucalyptus (longhorned) borer arthropod beetle limited n/a (already in CA) CDFA (reg. B)
Phomopsis vaccinii Phomopsis soft rot disease fungus not present moderate Mycologia
Phoma tracheiphila Mal Secco disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Phoenix canariensis Canary Island date palm plant woody limited n/a (already in CA) No list
Phloeotribus liminarius peach bark beetle arthropod beetle not present high CDFA (reg. B)
Phlebovirus rvfv Rift Valley Fever disease virus VALUE REQUIRED VALUE REQUIRED CIDRAP
Phlebia chrysocrea Wood decay disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Phialophora cinerescens Phialophora wilt of carnations and strawberries disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Phenococcus manihoti cassava mealybug arthropod scale, aphid not present moderate USDA Plant/Pest
Phenococcus aceris apple mealybug arthropod scale, aphid not present high CDFA (reg. A)
Phelsuma madagascariensis Giant day gecko vertebrate reptile VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Phelsuma laticauda Gold dust day gecko vertebrate reptile VALUE REQUIRED VALUE REQUIRED Witmer et al
Phelsuma guimbeaui Orange-spotted day gecko vertebrate reptile VALUE REQUIRED VALUE REQUIRED Witmer et al
Phellinus senex Stem decay disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Phellinus noxius Brown root rot disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Phasianus colchicus Common pheasant vertebrate bird VALUE REQUIRED n/a (already in CA) FL FWCC NNS List
Phascogale spp. Brush-tailed marsupial mouse vertebrate mammal VALUE REQUIRED VALUE REQUIRED OR ISC Worst 100
Phalaris arundinacea reed canarygrass plant grass limited n/a (already in CA) WA Weed List
Phalaris aquatica hardinggrass plant grass widespread n/a (already in CA) Cal-IPC list
Phakopsora pachyrhizi Asian soybean Rust disease fungus not present low National IS Info
Phakopsora meibomiae soybean rust disease fungus not present high APHIS OPIS
Phaeoramularia angolensis Phaeoramularia Fruit and Leaf Spot disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Phacidiopycnis pseudotsuga Douglas Fir Canker disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Pestivirus CSFV strain Brescia Classical swine fever virus (strain Brescia) disease virus not present VALUE REQUIRED CDFA AHFSS
Pestalotiopsis disseminata Parasitic Leaf Fungus disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Peronosclerospora sacchari (philippinensis) Sugarcane Downy Mildew disease fungus not present low USDA Plant/Pest
Peronosclerospora philippinensis (aka, sacchari) Philippine Downy mildew of sorghum/Select Agent disease oomycete not present VALUE REQUIRED No list
Peronosclerospora maydis Downy Mildew of Corn/ Select agent disease oomycete VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Perdix perdix Grey partridge vertebrate bird VALUE REQUIRED VALUE REQUIRED Harmful U.S. NIS
Pennisetum villosum feathergrass plant grass limited n/a (already in CA) No list
Pennisetum setaceum crimson fountaingrass plant grass widespread n/a (already in CA) Cal-IPC list
Pennisetum polystachion missiongrass plant grass not present low USDA Plant/Pest
Pennisetum pedicellatum Kyasumagrass plant grass not present low USDA Plant/Pest
Pennisetum macrourum African feathergrass plant grass not present low USDA Plant/Pest
Pennisetum clandestinum kikuyugrass plant grass widespread n/a (already in CA) OR Weed List
Pennisetum ciliare buffelgrass plant grass limited n/a (already in CA) AZ Weed List
Pelodiscus sinensis Chinese softshell vertebrate reptile VALUE REQUIRED VALUE REQUIRED Witmer et al
Peganum harmala harmel plant herbaceous not present high No list
Pectinophora scutigera pink-spotted bollworm arthropod butterfly, moth not present high USDA Plant/Pest
Pectinophora gossypiella pink bollworm arthropod butterfly, moth limited n/a (already in CA) CDFA (reg. A)
Pecluvirus pcv Peanut Clump Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Pecluvirus ipcv Indian Peanut Clump Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Pear Bud Drop Agent Pear Bud Drop Agent disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Pavo cristatus Common peafowl vertebrate bird VALUE REQUIRED n/a (already in CA) FL FWCC NNS List
Pasteurella multocida Avian cholera disease bacterium widespread n/a (already in CA) Merck Vet Manual
Passer montanus European tree sparrow vertebrate bird VALUE REQUIRED VALUE REQUIRED Witmer et al
Passer domesticus House sparrow vertebrate bird widespread n/a (already in CA) Cal Code 14:671
Paspalum scrobiculatum Kodo-millet plant grass not present low USDA Plant/Pest
Parus varius Varied tit vertebrate bird VALUE REQUIRED VALUE REQUIRED Witmer et al
Paroaria coronata Red-crested cardinal vertebrate bird VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Paroaria capitata Yellow-billed cardinal vertebrate bird VALUE REQUIRED VALUE REQUIRED Witmer et al
Parlatoria ziziphi black citrus scale arthropod scale, aphid not present high CDFA (reg. A)
Parlatoria vandae vanda paralatoria scale arthropod scale, aphid not present high CDFA (reg. A)
Parlatoria theae complex tea paralatoria scale - species complex arthropod scale, aphid not present high CDFA (reg. A)
Parlatoria pseudaspidiotus vand orchid scale arthropod scale, aphid not present high CDFA (reg. A)
Parlatoria proteus sanseveria scale arthropod scale, aphid not present high CDFA (reg. A)
Parlatoria pergandii chaff scale arthropod scale, aphid limited n/a (already in CA) CDFA (reg. B)