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 Extentsort icon Risk of Introduction First Source
Python molurus Burmese python vertebrate reptile not present moderate Cal Code 14:671
Nerodia rhombifer Diamondback water snake vertebrate reptile not present high Cal Code 14:671
Boiga irregularis Brown treesnake vertebrate reptile not present high Cal Code 14:671
Amia calva Bowfin vertebrate fish not present high Cal Code 14:671
Serrasalminae Piranha vertebrate fish not present high FL FWCC NNS List
Clarias batrachus Walking catfish vertebrate fish not present moderate Cal Code 14:671
Scardinius erythropthalmus Rudd vertebrate fish not present high Harmful U.S. NIS
Lepstosteus lucius Longnose Gar vertebrate fish not present high Cal Code 14:671
Channa argus Northern Snakehead vertebrate fish not present moderate Cal Code 14:671
Neogobius melanostomus Round goby vertebrate fish not present moderate NISIC
Gymnocephalus cernuus Ruffe vertebrate fish not present moderate Harmful U.S. NIS
Esox lucius Northern Pike vertebrate fish not present high Cal Code 14:671
Aeginetia spp. aeginetia plant herbaceous not present moderate USDA Plant/Pest
Alectra spp. alectra plant herbaceous not present moderate USDA Plant/Pest
Allaria petiolata garlic mustard plant herbaceous not present high OR Weed List
Alternanthera sessilis sessile joyweed plant herbaceous not present moderate USDA Plant/Pest
Ambrosia tomentosa skeletonleaf bursage plant herbaceous not present high ID Weed List
Anthriscus sylvestris wild chervil plant herbaceous not present high WA Weed List
Azolla pinnata mosquito fern plant herbaceous not present moderate USDA Plant/Pest
Bryonia alba white bryony plant herbaceous not present moderate WA Weed List
Butomus umbellatus flowering rush plant herbaceous not present high WA Weed List
Carum carvi wild caraway plant herbaceous not present high CO Weed List
Centaurea macrocephala bighead knapweed plant herbaceous not present moderate WA Weed List
Chaenorhinum minus dwarf snapdragon plant herbaceous not present moderate WA Weed List
Chrysopogon aciculatus pilipiliula plant grass not present low USDA Plant/Pest
Clematis orientalis Chinese clematis plant herbaceous not present high CO Weed List
Crassula helmsii Australian swamp stonecrop plant herbaceous not present low WA Weed List
Digitaria velutina velvet fingergrass plant grass not present moderate USDA Plant/Pest
Dipsacus laciniatus cutleaf teasel plant herbaceous not present high CO Weed List
Eichhornia azurea anchored water hyacinth plant herbaceous not present low USDA Plant/Pest
Epilobium hirsutum hairy willow herb plant herbaceous not present high WA Weed List
Euryops multifidus hawk's eye plant woody not present high AZ Weed List
Galega officinalis goatsrue plant herbaceous not present moderate USDA Plant/Pest
Glossostigma diandrum mud mat plant herbaceous not present low WA Weed List
Hedera hibernica English ivy plant woody not present high WA Weed List
Heracleum mantegazzianum giant hogweed plant herbaceous not present high CDFA
Hieracium atratum polar hawkweed plant herbaceous not present low WA Weed List
Hieracium caespitosum yellow hawkweed plant herbaceous not present high ID Weed List
Hieracium glomeratum queen devil hawkweed plant herbaceous not present low WA Weed List
Hieracium laevigatum smooth hawkweed plant herbaceous not present low WA Weed List
Hieracium pilosella mouseear hawkweed plant herbaceous not present moderate OR Weed List
Hieracium piloselloides king devil hawkweed plant herbaceous not present moderate MT Weed List
Hieracium x floribundum yellow devil hawkweed plant herbaceous not present moderate MT Weed List
Homeria spp. cape tulip plant herbaceous not present low USDA Plant/Pest
Hydrocharis morsus-ranae European frog-bit plant herbaceous not present moderate WA Weed List
Hygrophila polysperma Miramar weed plant herbaceous not present high CDFA
Impatiens glandulifera policeman's helmet plant herbaceous not present moderate OR Weed List
Imperata brasiliensis Brazilian satintail plant grass not present low USDA Plant/Pest
Imperata cylindrica cogongrass plant grass not present moderate USDA Plant/Pest
Ischaemum rugosum murainograss plant grass not present low USDA Plant/Pest
Lagarosiphon major oxygenweed plant herbaceous not present moderate CDFA
Leptochloa chinensis Asian sprangletop plant grass not present moderate USDA Plant/Pest
Lepyrodiclis holosteoides false jagged-chickweed plant herbaceous not present low WA Weed List
Lespedeza cuneata sericea lespedeza plant herbaceous not present moderate CO Weed List
Limnophila sessiliflora blume (ambulia) plant herbaceous not present moderate CDFA
Ludwigia peruviana water primrose plant herbaceous not present moderate CDFA
Lythrum virgatum purple loosestrife plant herbaceous not present low MT Weed List
Melaleuca quinquenervia broadleaf paper bard tree plant woody not present low USDA Plant/Pest
Melastoma malabathricum Malabar melastome plant woody not present low APHIS
Mikania cordata mile-a-minute plant herbaceous not present low USDA Plant/Pest
Mikania micrantha bittervine plant herbaceous not present low USDA Plant/Pest
Milium vernale milium plant grass not present low ID Weed List
Mimosa diplotricha giant sensitive plant plant woody not present low OR Weed List
Mimosa invisa giant sensitive plant plant woody not present low USDA Plant/Pest
Mimosa pellita lollipop mimosa plant woody not present low OR Weed List
Mimosa pigra catclaw mimosa plant woody not present low USDA Plant/Pest
Monochoria hastata arrowleaf falsepickerelweed plant herbaceous not present low USDA Plant/Pest
Murdannia keisak marsh dew flower plant herbaceous not present moderate WA Weed List
Myosoton aquaticum giant chickweed plant herbaceous not present moderate CDFA
Najas minor slender-leaved naiad plant herbaceous not present moderate WA Weed List
Nardus stricta matgrass plant grass not present moderate ID Weed List
Nassella trichotoma serrated tussock plant grass not present low USDA Plant/Pest
Opuntia aurantiaca jointed prickly pear plant herbaceous not present low USDA Plant/Pest
Orobanche minor small broomrape plant herbaceous not present high OR Weed List
Oryza longistaminata red rice plant grass not present moderate USDA Plant/Pest
Oryza punctata red rice plant grass not present moderate USDA Plant/Pest
Paspalum scrobiculatum Kodo-millet plant grass not present low USDA Plant/Pest
Pennisetum macrourum African feathergrass plant grass not present low USDA Plant/Pest
Pennisetum pedicellatum Kyasumagrass plant grass not present low USDA Plant/Pest
Pennisetum polystachion missiongrass plant grass not present low USDA Plant/Pest
Picris hieracioides hawkweed oxtongue plant herbaceous not present moderate WA Weed List
Polygonum x bohemicum Bohemian knotweed plant herbaceous not present moderate WA Weed List
Pontederia cordata pickerelweed plant herbaceous not present moderate CDFA
Prosopis alpataco mesquite plant woody not present low USDA Plant/Pest
Prosopis argentina mesquite plant woody not present low USDA Plant/Pest
Prosopis articulata mesquite plant woody not present low USDA Plant/Pest
Prosopis burkartii mesquite plant woody not present low USDA Plant/Pest
Prosopis caldenia mesquite plant woody not present low USDA Plant/Pest
Prosopis calingastana cusqui plant woody not present low USDA Plant/Pest
Prosopis campestris mesquite plant woody not present low USDA Plant/Pest
Prosopis castellanosii mesquite plant woody not present low USDA Plant/Pest
Prosopis denudans mesquite plant woody not present low USDA Plant/Pest
Prosopis elata mesquite plant woody not present low USDA Plant/Pest
Prosopis farcta mesquite plant woody not present low USDA Plant/Pest
Prosopis ferox mesquite plant woody not present low USDA Plant/Pest
Prosopis fiebrigii mesquite plant woody not present low USDA Plant/Pest
Prosopis hassleri mesquite plant woody not present low USDA Plant/Pest
Prosopis humilis mesquite plant woody not present low USDA Plant/Pest
Prosopis kuntzei mesquite plant woody not present low USDA Plant/Pest
Prosopis pallida mesquite plant woody not present low USDA Plant/Pest