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 Name Common Name Typesort icon Subtype Extent Risk of Introduction First Source
Trapa bicornis water caltrap plant herbaceous not present low WA Weed List
Trapa natans water-chestnut plant herbaceous not present moderate AZ Weed List
Tridax procumbens coat buttons plant herbaceous not present low USDA Plant/Pest
Tripleurospermum perforatum scentless false mayweed plant herbaceous not present low CO Weed List
Tussilago farfara coltsfoot plant herbaceous not present moderate OR Weed List
Urochloa panicoides liverseed grass plant grass not present high USDA Plant/Pest
Utricularia inflata swollen bladderwort plant herbaceous not present moderate WA Weed List
Vallisneria spp. eelgrass plant herbaceous not present high CDFA
Cuscuta australis Australian dodder plant herbaceous not present low CDFA
Cuscuta monogyna Eastern Dodder plant herbaceous not present low No list
Cuscuta spp. (C. japonica, reflexa, australia, monogyna) Dodder (non-native spp.) plant herbaceous limited n/a (already in CA) CDFA
Caulerpa brachypus Caulerpa brachypus plant algae unknown high Hoffman NOAA
Caulerpa racemosa Caulerpa racemosa plant algae VALUE REQUIRED high Hoffman NOAA
Sargassum muticum Sargassum muticum plant algae limited low Hoffman NOAA
Digitaria abyssinica Digitaria abyssinica plant grass not present moderate OR Weed List
Lyngbya spp. Lyngbya spp. plant algae VALUE REQUIRED VALUE REQUIRED Hoffman NOAA
Bromus madritensis ssp. rubens red brome plant grass widespread n/a (already in CA) Cal-IPC list
Alyssum murale yellowtuft plant herbaceous not present moderate OR Weed List
Alyssum corsicum yellowtuft plant herbaceous not present moderate OR Weed List
Didelphis marsupialis Opossum vertebrate mammal widespread n/a (already in CA) DFG Code 2118
Trichosurus vulpecula Brush-tailed possum vertebrate mammal not present low Lacey Act
Pseudocheirus peregrinus Ring-tailed possum vertebrate mammal VALUE REQUIRED VALUE REQUIRED Lacey Act
Pteropus spp. Flying fox vertebrate mammal not present low Cal Code 14:671
Saimiri sciureus Squirrel monkey vertebrate mammal VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Cercopithecus aethiops Vervet monkey vertebrate mammal VALUE REQUIRED n/a (already in CA) FL FWCC NNS List
Macaca fascicularis Crab-eating Monkey vertebrate mammal VALUE REQUIRED VALUE REQUIRED ISSG 100WorstIAS
Macaca fuscata Japanese macaque vertebrate mammal VALUE REQUIRED VALUE REQUIRED Witmer et al
Macaca mulatto Rhesus monkey vertebrate mammal VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Dasypus novemcinctus Nine-banded armadillo vertebrate mammal not present high Cal Code 14:671
Molossus molossus Pallas’s mastiff bat vertebrate mammal VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Oryctolagus cuniculus European rabbit vertebrate mammal VALUE REQUIRED n/a (already in CA) Lacey Act
Lepus europaeus European hare vertebrate mammal VALUE REQUIRED VALUE REQUIRED Witmer et al
Lepus townsendii White-tailed jackrabbit vertebrate mammal VALUE REQUIRED VALUE REQUIRED Witmer et al
Spermophilus parryii Arctic ground squirrel vertebrate mammal widespread n/a (already in CA) Witmer et al
Cynomys ludovicianus Prairie dog vertebrate mammal not present low CDFA Vert List
Sciurus aberti Abert’s squirrel vertebrate mammal VALUE REQUIRED VALUE REQUIRED Witmer et al
Sciurus aureogaster Mexican red-bellied squirrel vertebrate mammal VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Sciurus carolinensis Gray squirrel vertebrate mammal VALUE REQUIRED VALUE REQUIRED ISSG 100WorstIAS
Sciurus niger Fox squirrel vertebrate mammal VALUE REQUIRED VALUE REQUIRED ISSG 100WorstIAS
Sciurus vulgaris Red squirrel vertebrate mammal VALUE REQUIRED VALUE REQUIRED Witmer et al
Clethrionomys rutilus Red-backed vole vertebrate mammal VALUE REQUIRED VALUE REQUIRED Witmer et al
Rattus exulans Polynesian rat vertebrate mammal VALUE REQUIRED VALUE REQUIRED Witmer et al
Rattus norvegicus Norway rat vertebrate mammal widespread n/a (already in CA) Cal Code 14:671
Rattus rattus Ship rat vertebrate mammal widespread n/a (already in CA) Cal Code 14:671
Cricetomys gambianus Gambian giant pouched rat vertebrate mammal not present low Cal Code 14:671
Mus musculus House mouse vertebrate mammal widespread n/a (already in CA) Cal Code 14:671
Phascogale spp. Brush-tailed marsupial mouse vertebrate mammal VALUE REQUIRED VALUE REQUIRED OR ISC Worst 100
Antechinus spp. Broad-footed marsupial mouse vertebrate mammal VALUE REQUIRED VALUE REQUIRED OR ISC Worst 100
Sminthopsis spp. Narrow-footed marsupial mouse vertebrate mammal VALUE REQUIRED VALUE REQUIRED OR ISC Worst 100
Castor canadensis Beaver vertebrate mammal widespread n/a (already in CA) Cal Code 14:671
Mastomys spp. Multimammate rat or mouse vertebrate mammal not present low Lacey Act
Meriones unguiculatus Mongolian gerbil vertebrate mammal not present moderate CDFA Vert List
Myocastor coypus Nutria vertebrate mammal limited n/a (already in CA) Cal Code 14:671
Vulpes vulpes Red Fox vertebrate mammal limited n/a (already in CA) Cal Code 14:671
Nyctereutes procyonoides Racoon dog vertebrate mammal VALUE REQUIRED VALUE REQUIRED Lacey Act
Cuon alpinus Indian wild dog / Dhole vertebrate mammal VALUE REQUIRED VALUE REQUIRED Lacey Act
Canis familiaris Feral dog vertebrate mammal limited high Cal Code 14:671
Potos flavus Kinkajou vertebrate mammal VALUE REQUIRED VALUE REQUIRED CDFA Vert List
Nasua nasua Coatimundi vertebrate mammal VALUE REQUIRED VALUE REQUIRED CDFA Vert List
Nasua narica White-nosed coati vertebrate mammal VALUE REQUIRED VALUE REQUIRED CDFA Vert List
Mustela erminea Stoat vertebrate mammal VALUE REQUIRED VALUE REQUIRED Lacey Act
Mustela nivalis Least weasel vertebrate mammal VALUE REQUIRED VALUE REQUIRED Lacey Act
Mustela putorius European polecat or ferret vertebrate mammal limited n/a (already in CA) Cal Code 14:671
Mustela vision American mink vertebrate mammal VALUE REQUIRED VALUE REQUIRED Lacey Act
Herpestes auropunctatus Small Indian mongoose vertebrate mammal VALUE REQUIRED VALUE REQUIRED Lacey Act
Felis catus Feral cat vertebrate mammal widespread n/a (already in CA) Cal Code 14:671
Felis yagouaroundi Jaguarundi vertebrate mammal VALUE REQUIRED VALUE REQUIRED Witmer et al
Sus scrofa Feral pig vertebrate mammal widespread n/a (already in CA) Cal Code 14:671
Cervus axis Axis deer vertebrate mammal limited n/a (already in CA) Cal Code 14:671
Cervus dama Fallow deer vertebrate mammal limited n/a (already in CA) Cal Code 14:671
Cervus duvauceli Swamp deer vertebrate mammal VALUE REQUIRED VALUE REQUIRED Witmer et al
Cervus elaphus Wapiti vertebrate mammal VALUE REQUIRED n/a (already in CA) ISSG 100WorstIAS
Cervus Nippon Sika deer vertebrate mammal VALUE REQUIRED VALUE REQUIRED Harmful U.S. NIS
Cervus unicolor Sambar deer vertebrate mammal VALUE REQUIRED n/a (already in CA) FL FWCC NNS List
Odocoileus hemionus Black-tailed deer vertebrate mammal VALUE REQUIRED VALUE REQUIRED Witmer et al
Capreolus capreolus Roe deer vertebrate mammal VALUE REQUIRED VALUE REQUIRED Witmer et al
Boselaphus tragocamelus Nilgai vertebrate mammal VALUE REQUIRED VALUE REQUIRED Witmer et al
Oryx gazelle Gemsbok vertebrate mammal VALUE REQUIRED VALUE REQUIRED Witmer et al
Antilope cervicapra Blackbuck vertebrate mammal VALUE REQUIRED VALUE REQUIRED Witmer et al
Rupicapra rupicapra Chamois vertebrate mammal VALUE REQUIRED VALUE REQUIRED Witmer et al
Ovibos moshatus Musk-ox vertebrate mammal VALUE REQUIRED VALUE REQUIRED Witmer et al
Hemitragus jemlahicus Himalayan tahr vertebrate mammal VALUE REQUIRED n/a (already in CA) DFG Code 2118
Capra hircus Feral goat vertebrate mammal VALUE REQUIRED n/a (already in CA) ISSG 100WorstIAS
Capra ibex Alpine ibex vertebrate mammal VALUE REQUIRED VALUE REQUIRED Witmer et al
Ammotragus lervia Aoudad vertebrate mammal VALUE REQUIRED VALUE REQUIRED Witmer et al
Ovis ammon Mouflon sheep vertebrate mammal VALUE REQUIRED VALUE REQUIRED Witmer et al
Ovis aries Feral sheep vertebrate mammal VALUE REQUIRED VALUE REQUIRED Witmer et al
Cygnus olor Mute swan vertebrate bird widespread n/a (already in CA) Cal Code 14:671
Aix galericulata Mandarin duck vertebrate bird VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Ortalis vetula Plain chachalaca vertebrate bird VALUE REQUIRED VALUE REQUIRED Witmer et al
Callipepla squamata Scaled quail vertebrate bird VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Alectoris chukar Chukar partridge vertebrate bird VALUE REQUIRED n/a (already in CA) FL FWCC NNS List
Alectoris barbara Barbary partridge vertebrate bird VALUE REQUIRED VALUE REQUIRED Witmer et al
Perdix perdix Grey partridge vertebrate bird VALUE REQUIRED VALUE REQUIRED Harmful U.S. NIS
Francolinus francolinus Black francolin vertebrate bird VALUE REQUIRED VALUE REQUIRED FL FWCC NNS List
Francolinus pondicerianus Grey francolin vertebrate bird VALUE REQUIRED VALUE REQUIRED Witmer et al
Francolinus erkelii Erkel’s francolin vertebrate bird VALUE REQUIRED VALUE REQUIRED Witmer et al
Tetragallus himalayensis Himalayan snowcock vertebrate bird VALUE REQUIRED VALUE REQUIRED Harmful U.S. NIS
Coturnix coturnix Common quail vertebrate bird VALUE REQUIRED VALUE REQUIRED Witmer et al
Bambusicola thoracica Chinese bamboo partridge vertebrate bird VALUE REQUIRED VALUE REQUIRED Witmer et al