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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
Emex spinosa devil's-thorn plant herbaceous limited n/a (already in CA) Cal-IPC list
Velataspis dentata dentate scale arthropod scale, aphid not present moderate CDFA (reg. A)
Spartina densiflora dense-flowered cordgrass plant grass limited n/a (already in CA) Cal-IPC list
Flavivirus 1 Dengue Fever disease virus limited n/a (already in CA) WHO
Rosellinia necratrix Dematophora Root Rot disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Potyvirus demv Datura Enation Mosaic Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Potyvirus ddmv Datura Distortion Mosaic Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Potyvirus cdv Datura Colombian Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Hesperis matronalis dame's rocket plant herbaceous limited n/a (already in CA) CO Weed List
Linaria genistifolia ssp. dalmatica Dalmatian toadflax plant herbaceous limited n/a (already in CA) CDFA
Euphorbia cyparissias cypress spurge plant herbaceous limited n/a (already in CA) CO Weed List
Sobemovirus cnmov Cynosurus Mottle Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Nucleorhabdovirus ccsv Cynodon Chlorotic Streak Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Cyclaneusma minus Cyclaneusma Needle Cast disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Aulacaspis yasumatsui cycad aulacaspis scale arthropod scale, aphid not present high Univ. Florida
Dipsacus laciniatus cutleaf teasel plant herbaceous not present high CO Weed List
Geranium dissectum cutleaf geranium plant herbaceous widespread n/a (already in CA) Cal-IPC list
Prosopis calingastana cusqui plant woody not present low USDA Plant/Pest
Potamogeton crispus curlyleaf pondweed plant herbaceous widespread n/a (already in CA) Cal-IPC list
Curtovirus CTVCP Curly top virus disease virus widespread n/a (already in CA) CDFA (reg. A)
Rumex crispus curly dock plant herbaceous widespread n/a (already in CA) Cal-IPC list
Crinivirus CYSDV Cucurbit Yellow Stunting Disorder Virus disease virus limited moderate EPPO
Chrysis spp. cuckoo wasps arthropod bee, wasp not present moderate USDA Plant/Pest
Coelioxys spp. cuckoo bees arthropod bee, wasp not present low USDA Plant/Pest
Osteopilus septentrionalis Cuban treefrog vertebrate amphibian not present low Cal Code 14:671
Anolis porcatus Cuban green anole vertebrate reptile VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Mesembryanthemum crystallinum crystalline iceplant plant herbaceous widespread n/a (already in CA) Cal-IPC list
Chrysanthemum coronarium crown daisy plant herbaceous limited n/a (already in CA) Cal-IPC list
Ageratina adenophora croftonweed plant herbaceous limited n/a (already in CA) Cal-IPC list
Pennisetum setaceum crimson fountaingrass plant grass widespread n/a (already in CA) Cal-IPC list
Acridotheres cristatellus Crested mynah vertebrate bird not present low Cal Code 14:671
Rorippa sylvestris creeping yellow field cress plant herbaceous limited n/a (already in CA) CDFA
Oxalis corniculata creeping woodsorrel plant herbaceous widespread n/a (already in CA) Weeds of CA
Ludwigia peploides ssp. montevidensis creeping water-primrose plant herbaceous widespread n/a (already in CA) Cal-IPC list
Prosopis strombulifera creeping mesquite plant woody not present moderate USDA Plant/Pest
Ranunculus repens creeping buttercup plant herbaceous widespread n/a (already in CA) Cal-IPC list
Agrostis stolonifera creeping bentgrass plant grass limited n/a (already in CA) Cal-IPC list
Aphanomyces astaci Crayfish plague disease fungus widespread n/a (already in CA) ISSG Global InvS
Macaca fascicularis Crab-eating Monkey vertebrate mammal VALUE REQUIRED VALUE REQUIRED ISSG 100WorstIAS
Carlavirus cpmmv Cowpea Mild Mottle Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Chalcodermus aeneus cowpea curculio arthropod beetle not present high CDFA (reg. A)
Unknown pathogenic phytoplasma 2 Cotton virescence disease phytoplasma VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Xanthomonas acernea Cotton small leaf agent disease bacterium VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Alabama argillacea cotton leafworm arthropod butterfly, moth not present high CDFA (reg. A)
Begomovirus clcuv Cotton Leaf Curl Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Heliocoverpa armigera (Hübner) cotton bollworm arthropod butterfly, moth not present high CDFA (reg. A)
Eriophyes gossypii cotton blister mite arthropod mite not present high USDA Plant/Pest
Luteovirus cav Cotton Anthocyanosis Agent disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Spodoptera sunia Costa Rican armyworm arthropod butterfly, moth not present high CDFA (reg. A)
Junghuhnia vincta Corm dry rot disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Corbicula fluminalis Corbicula fluminalis invertebrate aquatic mollusk, freshwater limited n/a (already in CA) ANSTF
Eleutherodactylus coqui Coqui frog vertebrate amphibian not present high Cal Code 14:671
Malephora crocea coppery mesembryanthemum plant herbaceous limited n/a (already in CA) Med. plants list
Agkistrodon spp. Copperhead snake vertebrate reptile not present low DFG Code 2118
Emoia cyanura Copper-tailed skink vertebrate reptile VALUE REQUIRED VALUE REQUIRED Witmer et al
Orobanche cooperi Cooper's broomrape plant herbaceous limited n/a (already in CA) CDFA
Mycoplasma capricolum capripneumoniae Contagious Bovine Caprine Pleuropneumonia disease bacterium not present low Merck Vet Manual
Conoderus rufangulus Conoderus rufangulus arthropod beetle not present high USDA Plant/Pest
Estrilda astrild Common waxbill vertebrate bird VALUE REQUIRED VALUE REQUIRED Witmer et al
Podarcis muralis Common wall lizard vertebrate reptile VALUE REQUIRED VALUE REQUIRED Witmer et al
Echium vulgare common viper's bugloss plant herbaceous not present high WA Weed List
Holcus lanatus common velvet grass plant grass widespread n/a (already in CA) Cal-IPC list
Melagris gallopavo Common turkey vertebrate bird widespread n/a (already in CA) Cal Code 14:671
Dipsacus fullonum common teasel plant herbaceous widespread n/a (already in CA) Cal-IPC list
Tanacetum vulgare common tansy plant herbaceous limited n/a (already in CA) Cal-IPC list
Hypericum perforatum common St. John's wort plant herbaceous widespread n/a (already in CA) CDFA
Sonchus oleraceaus common sowthistle plant herbaceous widespread n/a (already in CA) Weeds of CA
Phragmites australis common reed plant grass limited n/a (already in CA) Cal-IPC list
Coturnix coturnix Common quail vertebrate bird VALUE REQUIRED VALUE REQUIRED Witmer et al
Portulaca oleracea common purslane plant herbaceous widespread n/a (already in CA) Weeds of CA
Phytolacca americana common pokeweed plant herbaceous widespread n/a (already in CA) Cal-IPC list
Phasianus colchicus Common pheasant vertebrate bird VALUE REQUIRED n/a (already in CA) FL FWCC NNS List
Pavo cristatus Common peafowl vertebrate bird VALUE REQUIRED n/a (already in CA) FL FWCC NNS List
Acridotheres tristis Common mynah vertebrate bird VALUE REQUIRED VALUE REQUIRED CDFA Vert List
Verbascum thapsus common mullein plant herbaceous widespread n/a (already in CA) Cal-IPC list
Malva neglecta common mallow plant herbaceous widespread n/a (already in CA) Weeds of CA
Hemidactylus frenatus Common house gecko vertebrate reptile VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Myosotis latifolia common forget-me-not plant herbaceous limited n/a (already in CA) Cal-IPC list
Crupina vulgaris common crupina plant herbaceous limited n/a (already in CA) CDFA
Tipula oleracea common crane fly arthropod fly not present low CDFA (reg. B)
Spartina anglica common cordgrass plant grass limited n/a (already in CA) Cal-IPC list
Stellaria media common chickweed plant herbaceous widespread n/a (already in CA) Weeds of CA
Cardinalis cardinalis Common cardinal vertebrate bird VALUE REQUIRED n/a (already in CA) DFG Code 2118
Serinus canaria Common canary vertebrate bird VALUE REQUIRED VALUE REQUIRED Witmer et al
Arctium minus common burdock plant herbaceous limited n/a (already in CA) CO Weed List
Anchusa officinalis common bugloss plant herbaceous limited n/a (already in CA) OR Weed List
Ascophyllum nodosum common brown algae plant algae limited n/a (already in CA) Hoffman NOAA
Boa constrictor Common boa vertebrate reptile limited n/a (already in CA) Cal Code 14:671
Sorghum almum Columbus grass plant grass not present moderate NV Weed List
Tussilago farfara coltsfoot plant herbaceous not present moderate OR Weed List
Leptinotarsa decemlineata Colorado potato beetle arthropod beetle not present high CDFA (reg. A)
Imperata cylindrica cogongrass plant grass not present moderate USDA Plant/Pest
Hemileia vastatrix Coffee Rust disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Planococcus lilacinus coffee mealybug arthropod scale, aphid not present high CDFA (reg. A)
Stephanoderes hampei Coffee fungus disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Hypothenemus hampei coffee berry borer arthropod beetle not present moderate USDA Plant/Pest
Araecerus coffeae coffee bean weevil arthropod beetle limited n/a (already in CA) CDFA (reg. B)
Diocalandra spp. coconut weevils arthropod beetle not present moderate CDFA (reg. A)
Aspidiotus destructor coconut scale arthropod scale, aphid not present high CDFA (reg. A)
Furcaspis oceanica coconut red scale arthropod scale, aphid not present high USDA Plant/Pest