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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
Alhagi maurorum camelthorn plant woody limited n/a (already in CA) NV Weed List
Orthopoxvirus cmlv Camel Pox Virus disease virus VALUE REQUIRED VALUE REQUIRED Chavarria NRDC
Zantedeschia aethiopica calla lily plant herbaceous limited n/a (already in CA) Cal-IPC list
Aonidiella aurantii California red scale arthropod scale, aphid widespread n/a (already in CA) CDFA (reg. B)
Medicago polymorpha California burclover plant herbaceous widespread n/a (already in CA) Cal-IPC list
Cactoblasis cactorum cactus moth arthropod butterfly, moth not present high CDFA (reg. A)
Aleyrodes proletella cabbage whitefly arthropod scale, aphid limited n/a (already in CA) CDFA (reg. B)
Thrips angusticeps cabbage thrips arthropod thrips not present high CDFA (reg. A)
Mamestra brassicae cabbage moth arthropod butterfly, moth not present moderate CDFA (reg. A)
Conotrachelus juglandis butternut curculio arthropod beetle not present moderate CDFA (reg. A)
Sirococcus clavigignenti-juglandacearum Butternut Canker disease fungus not present low ISSG Global InvS
Buddleja davidii butterflybush plant woody limited n/a (already in CA) OR Weed List
Leiolepis belliana Butterfly lizard vertebrate reptile VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Radopholus similis Burrowing Nematode invertebrate nematode not present moderate CDFA (reg. A)
Python molurus Burmese python vertebrate reptile not present moderate Cal Code 14:671
Cirsium vulgare bull thistle plant herbaceous widespread n/a (already in CA) Cal-IPC list
Malva niaceensis bull mallow plant herbaceous widespread n/a (already in CA) Weeds of CA
Watsonia meriana bulbil watsonia plant herbaceous limited n/a (already in CA) Cal-IPC list
Pennisetum ciliare buffelgrass plant grass limited n/a (already in CA) AZ Weed List
Solanum rostratum buffalobur plant herbaceous limited n/a (already in CA) ID Weed List
Melopsittacus undulatus Budgerigar vertebrate bird VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Plantago lanceolata buckhorn plantain plant herbaceous widespread n/a (already in CA) Cal-IPC list
Yersinia pestis Bubonic Plague disease bacterium widespread n/a (already in CA) NIAID
Trichosurus vulpecula Brush-tailed possum vertebrate mammal not present low Lacey Act
Phascogale spp. Brush-tailed marsupial mouse vertebrate mammal VALUE REQUIRED VALUE REQUIRED OR ISC Worst 100
Euproctis chrysorrhoea browntail moth arthropod butterfly, moth not present low CDFA (reg. A)
Aratinga pertinax Brown-throated conure vertebrate bird VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Molothrus ater Brown-headed cowbird vertebrate bird widespread n/a (already in CA) Cal Code 14:671
Boiga irregularis Brown treesnake vertebrate reptile not present high Cal Code 14:671
Sclerophthora rayssiae var. zeae Brown Stripe Downy Mildew of Maize disease fungus not present moderate APHIS OPIS
Schlerophthora rayssiae var zeae Brown Stripe Downy mildew of corn/Select Agent disease oomycete not present VALUE REQUIRED No list
Cochliobolus miyabeanus Brown Spot of Rice disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Physoderma zeae-maydis Brown Spot of Corn disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Mycosphaerella dearnesii Brown Spot Needle Blight disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Monilinia fructigena Brown Rot of Fruit disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Phellinus noxius Brown root rot disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Triphragmiopsis laricinum Brown Needle Rust disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Halyomorpha halys Brown marmorated stink bug arthropod scale, aphid limited n/a (already in CA) CDFA (reg. B)
Centaurea jacea brown knapweed plant herbaceous limited n/a (already in CA) WA Weed List
Toxoptera citricida Brown citrus aphid arthropod scale, aphid not present high CDFA (reg. A)
Leptoglossus chilensis brown Chilean leaf-footed bug arthropod scale, aphid not present moderate USDA Plant/Pest
Colletotrichum coffeanum Brown Blight disease fungus not present low USDA Plant/Pest
Basiliscus vittatus Brown basilisk vertebrate reptile VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Anolis sagrei Brown anole vertebrate reptile not present high Cal Code 14:671
Orobanche spp. broomrape plant herbaceous limited n/a (already in CA) USDA Plant/Pest
Metamasius spp. bromeliad weevils arthropod beetle not present moderate USDA Plant/Pest
Rymovirus bstv Brome Streak Mosaic Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Melaleuca quinquenervia broadleaf paper bard tree plant woody not present low USDA Plant/Pest
Erodium botrys broadleaf filaree plant herbaceous widespread n/a (already in CA) Weeds of CA
Antechinus spp. Broad-footed marsupial mouse vertebrate mammal VALUE REQUIRED VALUE REQUIRED OR ISC Worst 100
Picris echioides bristly oxtongue plant herbaceous widespread n/a (already in CA) Cal-IPC list
Asparagus asparagoides bridal creeper plant herbaceous limited n/a (already in CA) Cal-IPC list
Retama monosperma bridal broom plant woody limited n/a (already in CA) CDFA
Imperata brasiliensis Brazilian satintail plant grass not present low USDA Plant/Pest
Schinus terebinthifolius Brazilian peppertree plant woody limited n/a (already in CA) Cal-IPC list
Egeria densa Brazilian egeria plant herbaceous widespread n/a (already in CA) Cal-IPC list
Cotula coronopifolia brassbuttons plant herbaceous widespread n/a (already in CA) Cal-IPC list
Orobanche ramosa branched broomrape plant herbaceous limited n/a (already in CA) CDFA
Ramphotyphlops braminus Brahminy blind snake vertebrate reptile VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Pinnaspis buxi boxwood scale arthropod scale, aphid not present high CDFA (reg. A)
Amia calva Bowfin vertebrate fish not present high Cal Code 14:671
Mycobacterium bovis Bovine tuberculosis disease bacterium limited n/a (already in CA) Iowa State Univ
Unknown pathogenic virus or prion 1 Bovine spongiform encephalopathy (BSE) disease unknown not present low Iowa State Univ
Mycoplasma mycoides mycoides Bovine pleuropneumonia disease bacterium not present low Merck Vet Manual
Saponaria officinalis bouncingbet plant herbaceous limited n/a (already in CA) Cal-IPC list
Anthonomus grandis grandis boll weevil arthropod beetle not present high CDFA (reg. A)
Polygonum x bohemicum Bohemian knotweed plant herbaceous not present moderate WA Weed List
Limnophila sessiliflora blume (ambulia) plant herbaceous not present moderate CDFA
Helianthus ciliaris blueweed plant herbaceous limited n/a (already in CA) CDFA
Orbivirus btv Bluetongue disease virus limited n/a (already in CA) Iowa State Univ
Carlavirus Blueberry Scorch carlavirus disease virus not present moderate EPPO
Rhagoletis mendax blueberry maggot arthropod fly not present moderate CDFA (reg. A)
Aratinga cruentata Blue-fronted conure vertebrate bird VALUE REQUIRED VALUE REQUIRED Witmer et al
Amazona aestiva Blue-fronted Amazon vertebrate bird VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Cichlasoma spilurum Blue-eyed cichlid vertebrate fish not present high Cal Code 14:671
Aratinga acuticaudata Blue-crowned parakeet vertebrate bird VALUE REQUIRED n/a (already in CA) FL FWCC NNS List
Ophiostoma valdivianum Blue Stain of Beech disease fungus not present moderate ForestPathology
Ceratocystis nothogafi Blue Stain Fungus disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Ophiostoma ips Blue Stain Fungus disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Ceratocystis tenella Blue Stain disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Ophiostoma huntii Blue Stain disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Ophiostoma piceae Blue stain disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Ophiostoma piliferum Blue stain disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Panicum antidotale blue panicgrass plant grass limited n/a (already in CA) CDFA
Chorispora tenella blue mustard plant herbaceous limited n/a (already in CA) CDFA
Leptocybe invasa Blue gum chalcid arthropod bee, wasp not present high CDFA (reg. A)
Pseudomonas celebensis Blood disease bacterium of banana disease bacterium VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Oospora oryzetorum Blight disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Silybum marianum blessed milkthistle plant herbaceous widespread n/a (already in CA) Cal-IPC list
Araujia sericifera bladderflower plant woody limited n/a (already in CA) CDFA
Silene latifolia ssp. alba bladder campion plant herbaceous limited n/a (already in CA) WA Weed List
Lydorus pedicellatus Blacktip shipworm invertebrate aquatic mollusk, marine VALUE REQUIRED VALUE REQUIRED IMEAC
Alopecurus myosuroides blackgrass plant grass limited n/a (already in CA) WA Weed List
Antilope cervicapra Blackbuck vertebrate mammal VALUE REQUIRED VALUE REQUIRED Witmer et al
Closteroviridae byvd Blackberry Yellow Vein Disease disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Trioza tripunctata blackberry psyllid arthropod scale, aphid not present moderate CDFA (reg. A)
Odocoileus hemionus Black-tailed deer vertebrate mammal VALUE REQUIRED VALUE REQUIRED Witmer et al
Estrilda troglodytes Black-rumped waxbill vertebrate bird VALUE REQUIRED VALUE REQUIRED Witmer et al
Lonchura malacca Black-headed manikin vertebrate bird VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Phytoplasma bn Black wood disease phytoplasma VALUE REQUIRED VALUE REQUIRED APHIS OPIS