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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
Myosotis latifolia common forget-me-not plant herbaceous limited n/a (already in CA) Cal-IPC list
Hemidactylus frenatus Common house gecko vertebrate reptile VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Malva neglecta common mallow plant herbaceous widespread n/a (already in CA) Weeds of CA
Verbascum thapsus common mullein plant herbaceous widespread n/a (already in CA) Cal-IPC list
Acridotheres tristis Common mynah vertebrate bird VALUE REQUIRED VALUE REQUIRED CDFA Vert List
Pavo cristatus Common peafowl vertebrate bird VALUE REQUIRED n/a (already in CA) FL FWCC NNS List
Phasianus colchicus Common pheasant vertebrate bird VALUE REQUIRED n/a (already in CA) FL FWCC NNS List
Phytolacca americana common pokeweed plant herbaceous widespread n/a (already in CA) Cal-IPC list
Portulaca oleracea common purslane plant herbaceous widespread n/a (already in CA) Weeds of CA
Coturnix coturnix Common quail vertebrate bird VALUE REQUIRED VALUE REQUIRED Witmer et al
Phragmites australis common reed plant grass limited n/a (already in CA) Cal-IPC list
Sonchus oleraceaus common sowthistle plant herbaceous widespread n/a (already in CA) Weeds of CA
Hypericum perforatum common St. John's wort plant herbaceous widespread n/a (already in CA) CDFA
Tanacetum vulgare common tansy plant herbaceous limited n/a (already in CA) Cal-IPC list
Dipsacus fullonum common teasel plant herbaceous 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
Holcus lanatus common velvet grass plant grass widespread n/a (already in CA) Cal-IPC list
Echium vulgare common viper's bugloss plant herbaceous not present high WA Weed List
Podarcis muralis Common wall lizard vertebrate reptile VALUE REQUIRED VALUE REQUIRED Witmer et al
Estrilda astrild Common waxbill vertebrate bird VALUE REQUIRED VALUE REQUIRED Witmer et al
Conoderus rufangulus Conoderus rufangulus arthropod beetle not present high USDA Plant/Pest
Mycoplasma capricolum capripneumoniae Contagious Bovine Caprine Pleuropneumonia disease bacterium not present low Merck Vet Manual
Orobanche cooperi Cooper's broomrape plant herbaceous limited n/a (already in CA) CDFA
Emoia cyanura Copper-tailed skink vertebrate reptile VALUE REQUIRED VALUE REQUIRED Witmer et al
Agkistrodon spp. Copperhead snake vertebrate reptile not present low DFG Code 2118
Malephora crocea coppery mesembryanthemum plant herbaceous limited n/a (already in CA) Med. plants list
Eleutherodactylus coqui Coqui frog vertebrate amphibian not present high Cal Code 14:671
Corbicula fluminalis Corbicula fluminalis invertebrate aquatic mollusk, freshwater limited n/a (already in CA) ANSTF
Junghuhnia vincta Corm dry rot disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Spodoptera sunia Costa Rican armyworm arthropod butterfly, moth not present high CDFA (reg. A)
Luteovirus cav Cotton Anthocyanosis Agent disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Eriophyes gossypii cotton blister mite arthropod mite not present high USDA Plant/Pest
Heliocoverpa armigera (Hübner) cotton bollworm arthropod butterfly, moth not present high CDFA (reg. A)
Begomovirus clcuv Cotton Leaf Curl Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Alabama argillacea cotton leafworm arthropod butterfly, moth not present high CDFA (reg. A)
Xanthomonas acernea Cotton small leaf agent disease bacterium VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Unknown pathogenic phytoplasma 2 Cotton virescence disease phytoplasma VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Chalcodermus aeneus cowpea curculio arthropod beetle not present high CDFA (reg. A)
Carlavirus cpmmv Cowpea Mild Mottle Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Macaca fascicularis Crab-eating Monkey vertebrate mammal VALUE REQUIRED VALUE REQUIRED ISSG 100WorstIAS
Aphanomyces astaci Crayfish plague disease fungus widespread n/a (already in CA) ISSG Global InvS
Agrostis stolonifera creeping bentgrass plant grass limited n/a (already in CA) Cal-IPC list
Ranunculus repens creeping buttercup plant herbaceous widespread n/a (already in CA) Cal-IPC list
Prosopis strombulifera creeping mesquite plant woody not present moderate USDA Plant/Pest
Ludwigia peploides ssp. montevidensis creeping water-primrose plant herbaceous widespread n/a (already in CA) Cal-IPC list
Oxalis corniculata creeping woodsorrel plant herbaceous widespread n/a (already in CA) Weeds of CA
Rorippa sylvestris creeping yellow field cress plant herbaceous limited n/a (already in CA) CDFA
Acridotheres cristatellus Crested mynah vertebrate bird not present low Cal Code 14:671
Pennisetum setaceum crimson fountaingrass plant grass widespread n/a (already in CA) Cal-IPC list
Ageratina adenophora croftonweed plant herbaceous limited n/a (already in CA) Cal-IPC list
Chrysanthemum coronarium crown daisy plant herbaceous limited n/a (already in CA) Cal-IPC list
Mesembryanthemum crystallinum crystalline iceplant plant herbaceous widespread n/a (already in CA) Cal-IPC list
Anolis porcatus Cuban green anole vertebrate reptile VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Osteopilus septentrionalis Cuban treefrog vertebrate amphibian not present low Cal Code 14:671
Coelioxys spp. cuckoo bees arthropod bee, wasp not present low USDA Plant/Pest
Chrysis spp. cuckoo wasps arthropod bee, wasp not present moderate USDA Plant/Pest
Crinivirus CYSDV Cucurbit Yellow Stunting Disorder Virus disease virus limited moderate EPPO
Rumex crispus curly dock 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)
Potamogeton crispus curlyleaf pondweed plant herbaceous widespread n/a (already in CA) Cal-IPC list
Prosopis calingastana cusqui plant woody not present low USDA Plant/Pest
Geranium dissectum cutleaf geranium plant herbaceous widespread n/a (already in CA) Cal-IPC list
Dipsacus laciniatus cutleaf teasel plant herbaceous not present high CO Weed List
Aulacaspis yasumatsui cycad aulacaspis scale arthropod scale, aphid not present high Univ. Florida
Cyclaneusma minus Cyclaneusma Needle Cast disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Nucleorhabdovirus ccsv Cynodon Chlorotic Streak Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Sobemovirus cnmov Cynosurus Mottle Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Euphorbia cyparissias cypress spurge 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
Hesperis matronalis dame's rocket plant herbaceous limited n/a (already in CA) CO Weed List
Potyvirus cdv Datura Colombian Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Potyvirus ddmv Datura Distortion Mosaic Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Potyvirus demv Datura Enation Mosaic Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Rosellinia necratrix Dematophora Root Rot disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Flavivirus 1 Dengue Fever disease virus limited n/a (already in CA) WHO
Spartina densiflora dense-flowered cordgrass plant grass limited n/a (already in CA) Cal-IPC list
Velataspis dentata dentate scale arthropod scale, aphid not present moderate CDFA (reg. A)
Emex spinosa devil's-thorn plant herbaceous limited n/a (already in CA) Cal-IPC list
Nerodia rhombifer Diamondback water snake vertebrate reptile not present high Cal Code 14:671
Diaprepes abbreviatus Diaprepes root weevil arthropod beetle limited n/a (already in CA) CDFA (reg. A)
Didymosphenia geminata didymo plant algae limited high Hoffman NOAA
Centaurea diffusa diffuse knapweed plant herbaceous limited n/a (already in CA) CDFA
Digitaria abyssinica Digitaria abyssinica plant grass not present moderate OR Weed List
Sphaeropsis sapinea Diplodia Shoot Blight disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Cuscuta spp. (C. japonica, reflexa, australia, monogyna) Dodder (non-native spp.) plant herbaceous limited n/a (already in CA) CDFA
Discula destructiva Dogwood Anthracnose disease fungus not present moderate ISSG Global InvS
Phacidiopycnis pseudotsuga Douglas Fir Canker disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Bromus tectorum downy brome plant grass widespread n/a (already in CA) Cal-IPC list
Peronosclerospora maydis Downy Mildew of Corn/ Select agent disease oomycete VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Gaura drummondii Drummond's gaura plant herbaceous limited n/a (already in CA) CDFA
Ottelia alismoides ducklettuce plant herbaceous not present high USDA Plant/Pest
Cucumis melo var. duriam dudaim melon plant herbaceous limited n/a (already in CA) CDFA
Tymovirus dmv Dulcamara Mottle Virus disease virus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Sinoxylon anale dunnage beetle arthropod beetle not present high CDFA (reg. A)
Sesamia cretica durra stalk borer arthropod butterfly, moth not present moderate CDFA (reg. A)
Ceratocystis (Ophiostoma) ulmi Dutch elm disease disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Ophiostoma (Ceratocystis) ulmi Dutch elm disease disease fungus VALUE REQUIRED VALUE REQUIRED APHIS OPIS
Chaenorhinum minus dwarf snapdragon plant herbaceous not present moderate WA Weed List
Isatis tinctoria dyer's woad plant herbaceous widespread n/a (already in CA) CDFA
Echinochloa oryzicola early watergrass plant grass limited n/a (already in CA) Weeds of CA