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 | Type | Subtype |
Extent |
Risk of Introduction | First Source | |
|---|---|---|---|---|---|---|---|
| Pennisetum setaceum | crimson fountaingrass | plant | grass | widespread | n/a (already in CA) | Cal-IPC list | |
| Phalaris aquatica | hardinggrass | plant | grass | widespread | n/a (already in CA) | Cal-IPC list | |
| Phytolacca americana | common pokeweed | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Picris echioides | bristly oxtongue | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Piptatherum miliaceum | smilograss | plant | grass | widespread | n/a (already in CA) | Cal-IPC list | |
| Plantago lanceolata | buckhorn plantain | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Polygonum arenastrum | oval leaf knotweed | plant | herbaceous | widespread | n/a (already in CA) | Weeds of CA | |
| Polypogon monspeliensis and subspp. | rabbitfoot polypogon | plant | grass | widespread | n/a (already in CA) | Cal-IPC list | |
| Portulaca oleracea | common purslane | plant | herbaceous | widespread | n/a (already in CA) | Weeds of CA | |
| Potamogeton crispus | curlyleaf pondweed | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Proboscidea louisianica | unicorn-plant | plant | herbaceous | widespread | n/a (already in CA) | WA Weed List | |
| Prunus cerasifera | cherry plum | plant | woody | widespread | n/a (already in CA) | Cal-IPC list | |
| Ranunculus repens | creeping buttercup | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Raphanus raphanistrum | wild radish | plant | herbaceous | widespread | n/a (already in CA) | Weeds of CA | |
| Raphanus sativus | radish | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Ricinus communis | castorbean | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Rubus armeniacus | Himalaya blackberry | plant | woody | widespread | n/a (already in CA) | CDFA | |
| Rumex acetosella | red sorrel | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Rumex crispus | curly dock | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Salsola paulsenii | barbwire Russian-thistle | plant | herbaceous | widespread | n/a (already in CA) | CDFA | |
| Salsola tragus | Russian-thistle | plant | herbaceous | widespread | n/a (already in CA) | CDFA | |
| Schismus arabicus | mediterraneangrass | plant | grass | widespread | n/a (already in CA) | Cal-IPC list | |
| Schismus barbatus | mediterraneangrass | plant | grass | widespread | n/a (already in CA) | Cal-IPC list | |
| Senecio vulgaris | old-man-in-the-spring | plant | herbaceous | widespread | n/a (already in CA) | Weeds of CA | |
| Setaria faberi | giant foxtail | plant | grass | widespread | n/a (already in CA) | CDFA | |
| Setaria pumila | yellow foxtail | plant | grass | widespread | n/a (already in CA) | Weeds of CA | |
| Setaria viridis | green bristlegrass | plant | grass | widespread | n/a (already in CA) | Weeds of CA | |
| Silybum marianum | blessed milkthistle | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Sinapis arvensis | wild mustard | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Sisymbrium irio | London rocket | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Solanum nigrum | black nightshade | plant | herbaceous | widespread | n/a (already in CA) | Weeds of CA | |
| Solanum physalifolium | hoe nightshade | plant | herbaceous | widespread | n/a (already in CA) | Weeds of CA | |
| Soliva sessilis | lawnweed | plant | herbaceous | widespread | n/a (already in CA) | WA Weed List | |
| Sonchus oleraceaus | common sowthistle | plant | herbaceous | widespread | n/a (already in CA) | Weeds of CA | |
| Sorghum halepense | johnsongrass | plant | grass | widespread | n/a (already in CA) | WA Weed List | |
| Spartium junceum | Spanish broom | plant | woody | widespread | n/a (already in CA) | Cal-IPC list | |
| Stellaria media | common chickweed | plant | herbaceous | widespread | n/a (already in CA) | Weeds of CA | |
| Taeniatherum caput-medusae | medusahead | plant | grass | widespread | n/a (already in CA) | CDFA | |
| Tamarix parviflora | smallflower tamarisk | plant | woody | widespread | n/a (already in CA) | Cal-IPC list | |
| Tamarix ramosissima | saltcedar | plant | woody | widespread | n/a (already in CA) | Cal-IPC list | |
| Torilis arvensis | hedgeparsley | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Tribulus terrestris | puncturevine | plant | herbaceous | widespread | n/a (already in CA) | CDFA | |
| Trifolium hirtum | rose clover | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Undaria pinnatifida | wakame | plant | algae | widespread | n/a (already in CA) | Cal-IPC list | |
| Verbascum thapsus | common mullein | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Vicia sativa | garden vetch | plant | herbaceous | widespread | n/a (already in CA) | Weeds of CA | |
| Vicia villosa | hairy vetch | plant | herbaceous | widespread | n/a (already in CA) | Weeds of CA | |
| Vinca major | big periwinkle | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Vulpia myuros | rattail fescue | plant | grass | widespread | n/a (already in CA) | Cal-IPC list | |
| Cenchrus incertus | coast sandbur | plant | grass | widespread | n/a (already in CA) | CDFA | |
| Elytrigia repens | quackgrass | plant | grass | widespread | n/a (already in CA) | CDFA | |
| Aegilops cylindrica | jointed goatgrass | plant | grass | widespread | n/a (already in CA) | WA Weed List | |
| Ambrosia artemisifolia | ragweed | plant | herbaceous | widespread | n/a (already in CA) | OR Weed List | |
| Brachypodium distachyon | annual false-brome | plant | grass | widespread | n/a (already in CA) | Cal-IPC list | |
| Secale cereale | cereal rye | plant | grass | widespread | n/a (already in CA) | WA Weed List | |
| Verbena litoralis | tall vervain | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Cenchrus longispinus | mat sandbur | plant | grass | widespread | n/a (already in CA) | CDFA | |
| Yersinia pestis | Bubonic Plague | disease | bacterium | widespread | n/a (already in CA) | NIAID | |
| Flavivirus 2 | West Nile Virus | disease | virus | widespread | n/a (already in CA) | Iowa State Univ | |
| Poa pratensis | Kentucky bluegrass | plant | grass | 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) | |
| Acarapis woodi | honey bee tracheal mite | arthropod | widespread | n/a (already in CA) | USDA Plant/Pest | ||
| Adelphocoris rapidus | rapid plant bug | arthropod | scale, aphid | widespread | n/a (already in CA) | CDFA (reg. A) | |
| Aleuroclava aucubae | aucuba whitefly | arthropod | scale, aphid | widespread | n/a (already in CA) | CDFA (reg. B) | |
| Aonidiella aurantii | California red scale | arthropod | scale, aphid | widespread | n/a (already in CA) | CDFA (reg. B) | |
| Bactrocera oleae | Olive fruit fly | arthropod | fly | widespread | n/a (already in CA) | pest of concern | |
| Drosophila suzukii | Spotted Wing Drosophila | arthropod | fly | widespread | n/a (already in CA) | CDFA Detect. Adv | |
| Epitrix tuberis | tuber flea beetle | arthropod | beetle | widespread | n/a (already in CA) | CDFA (reg. B) | |
| Harrisina brillians | western grapeleaf skeletonizer | arthropod | butterfly, moth | widespread | n/a (already in CA) | CDFA (reg. B) | |
| Liriomyza huidobrensis | pea leafminer | arthropod | fly | widespread | n/a (already in CA) | CDFA (reg. A) | |
| Rhagoletis pomonella | apple maggot | arthropod | fly | widespread | n/a (already in CA) | CDFA (reg. B) | |
| Rhopalomyzus poae | grass aphid | arthropod | scale, aphid | widespread | n/a (already in CA) | CDFA (reg. B) | |
| Tylenchulus semipenetrans | citrus nematode | invertebrate | nematode | widespread | n/a (already in CA) | CDFA (reg. C) | |
| Varroa jacobsoni | varroa mite | arthropod | mite | widespread | n/a (already in CA) | USDA Plant/Pest | |
| Corbicula fluminea | Asian clam | invertebrate | aquatic mollusk, freshwater | widespread | n/a (already in CA) | ANSTF | |
| Urosalpinx cinerea | Atlantic oyster drill | invertebrate | aquatic mollusk, marine | widespread | n/a (already in CA) | Exoticsguide | |
| Styela clava | Club sea squirt | invertebrate | crustaceans and tunicates | widespread | n/a (already in CA) | Exoticsguide | |
| Didelphis marsupialis | Opossum | vertebrate | mammal | widespread | n/a (already in CA) | DFG Code 2118 | |
| Spermophilus parryii | Arctic ground squirrel | vertebrate | mammal | widespread | n/a (already in CA) | 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 | |
| Mus musculus | House mouse | vertebrate | mammal | widespread | n/a (already in CA) | Cal Code 14:671 | |
| Castor canadensis | Beaver | vertebrate | mammal | widespread | n/a (already in CA) | Cal Code 14:671 | |
| Felis catus | Feral cat | vertebrate | mammal | widespread | n/a (already in CA) | Cal Code 14:671 | |
| Sus scrofa | Feral pig | vertebrate | mammal | widespread | n/a (already in CA) | Cal Code 14:671 | |
| Cygnus olor | Mute swan | vertebrate | bird | widespread | n/a (already in CA) | Cal Code 14:671 | |
| Melagris gallopavo | Common turkey | vertebrate | bird | widespread | n/a (already in CA) | Cal Code 14:671 | |
| Columba livia | Feral pigeon | vertebrate | bird | widespread | high | Witmer et al | |
| Passer domesticus | House sparrow | vertebrate | bird | widespread | n/a (already in CA) | Cal Code 14:671 | |
| Sturnus vulgaris | European starling | vertebrate | bird | widespread | n/a (already in CA) | Cal Code 14:671 | |
| Rana catesbeiana | American bullfrog | vertebrate | amphibian | widespread | n/a (already in CA) | Cal Code 14:671 | |
| Pasteurella multocida | Avian cholera | disease | bacterium | widespread | n/a (already in CA) | Merck Vet Manual | |
| Aphanomyces astaci | Crayfish plague | disease | fungus | widespread | n/a (already in CA) | ISSG Global InvS | |
| Puccinia striiformis | Wheat stripe rust | disease | fungus | widespread | n/a (already in CA) | National IS Info | |
| Beauveria spp. | Beauveria bassiana (Balsamo) | disease | fungus | widespread | n/a (already in CA) | National IS Info | |
| Bromus madritensis ssp. rubens | red brome | plant | grass | widespread | n/a (already in CA) | Cal-IPC list | |
| mytilus galloprovincialis | Mediterranean blue mussel | invertebrate | aquatic mollusk, marine | widespread | n/a (already in CA) | IMEAC | |
| Molothrus ater | Brown-headed cowbird | vertebrate | bird | widespread | n/a (already in CA) | Cal Code 14:671 | |
| Mephitis mephitis | Skunk | vertebrate | mammal | widespread | n/a (already in CA) | Cal Code 14:671 | |
| Pseudocheirus peregrinus | Ring-tailed possum | vertebrate | mammal | VALUE REQUIRED | VALUE REQUIRED | Lacey Act |
