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 | |
|---|---|---|---|---|---|---|---|
| Bromus tectorum | downy brome | plant | grass | widespread | n/a (already in CA) | Cal-IPC list | |
| Cakile maritima | European sea-rocket | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Capsella bursa-pastoris | shepard's purse | plant | herbaceous | widespread | n/a (already in CA) | Weeds of CA | |
| Cardaria draba | hoary cress | plant | herbaceous | widespread | n/a (already in CA) | CDFA | |
| Carduus pycnocephalus | Italian thistle | plant | herbaceous | widespread | n/a (already in CA) | CDFA | |
| Carduus tenuiflorus | slenderflower thistle | plant | herbaceous | widespread | n/a (already in CA) | CDFA | |
| Carpobrotus edulis | iceplant | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Carthamus lanatus | woolly distaff thistle | plant | herbaceous | widespread | n/a (already in CA) | CDFA | |
| Cenchrus echinatus | southern sandbur | plant | grass | widespread | n/a (already in CA) | CDFA | |
| Centaurea calcitrapa | purple starthistle | plant | herbaceous | widespread | n/a (already in CA) | CDFA | |
| Centaurea melitensis | Malta starthistle | plant | herbaceous | widespread | n/a (already in CA) | CDFA | |
| Centaurea solstitialis | yellow starthistle | plant | herbaceous | widespread | n/a (already in CA) | CDFA | |
| Cichorium intybus | chicory | plant | herbaceous | widespread | n/a (already in CA) | CO Weed List | |
| Cirsium arvense | Canada thistle | plant | herbaceous | widespread | n/a (already in CA) | CDFA | |
| Cirsium vulgare | bull thistle | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Conium maculatum | poison-hemlock | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Convolvulus arvensis | field bindweed | plant | herbaceous | widespread | n/a (already in CA) | CDFA | |
| Conyza bonariensis | asthmaweed | plant | herbaceous | widespread | n/a (already in CA) | Weeds of CA | |
| Cortaderia jubata | jubatagrass | plant | grass | widespread | n/a (already in CA) | Cal-IPC list | |
| Cortaderia selloana | pampasgrass | plant | grass | widespread | n/a (already in CA) | Cal-IPC list | |
| Cotula coronopifolia | brassbuttons | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Cynara cardunculus | artichoke thistle | plant | herbaceous | widespread | n/a (already in CA) | CDFA | |
| Cynodon dactylon | bermudagrass | plant | grass | widespread | n/a (already in CA) | CDFA | |
| Cynosurus echinatus | hedgehog dogtailgrass | plant | grass | widespread | n/a (already in CA) | Cal-IPC list | |
| Cyperus rotundus | purple nutsedge | plant | herbaceous | widespread | n/a (already in CA) | CDFA | |
| Cytisus scoparius | Scotch broom | plant | woody | widespread | n/a (already in CA) | CDFA | |
| Dactylis glomerata | orchardgrass | plant | grass | widespread | n/a (already in CA) | Cal-IPC list | |
| Daucus carota | wild carrot | plant | herbaceous | widespread | n/a (already in CA) | WA Weed List | |
| Delairea odorata | Cape-ivy | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Digitaria sanguinalis | hairy crabgrass | plant | grass | widespread | n/a (already in CA) | Weeds of CA | |
| Dipsacus fullonum | common teasel | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Dipsacus sativus | fuller's teasel | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Dittrichia graveolens | stinkwort | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Echinochloa colona | jungle rice | plant | grass | widespread | n/a (already in CA) | Weeds of CA | |
| Egeria densa | Brazilian egeria | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Ehrharta calycina | purple veldtgrass | plant | grass | widespread | n/a (already in CA) | Cal-IPC list | |
| Eichhornia crassipes | water hyacinth | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Erodium botrys | broadleaf filaree | plant | herbaceous | widespread | n/a (already in CA) | Weeds of CA | |
| Erodium cicutarium | redstem filaree | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Erodium moschatum | whitestem filaree | plant | herbaceous | widespread | n/a (already in CA) | Weeds of CA | |
| Eucalyptus globulus | Tasmanian blue gum | plant | woody | widespread | n/a (already in CA) | Cal-IPC list | |
| Festuca arundinacea | tall fescue | plant | grass | widespread | n/a (already in CA) | Cal-IPC list | |
| Ficus carica | edible fig | plant | woody | widespread | n/a (already in CA) | Cal-IPC list | |
| Foeniculum vulgare | fennel | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Genista monspessulana | French broom | plant | woody | widespread | n/a (already in CA) | CDFA | |
| Geranium dissectum | cutleaf geranium | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Hedera canariensis | Algerian ivy | plant | woody | widespread | n/a (already in CA) | Cal-IPC list | |
| Hedera helix | English ivy | plant | woody | widespread | n/a (already in CA) | Cal-IPC list | |
| Hirschfeldia incana | shortpod mustard | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Holcus lanatus | common velvet grass | plant | grass | widespread | n/a (already in CA) | Cal-IPC list | |
| Hordeum marinum | Mediterranean barley | plant | grass | widespread | n/a (already in CA) | Cal-IPC list | |
| Hordeum murinum | Mediterranean barley | plant | grass | widespread | n/a (already in CA) | Cal-IPC list | |
| Hypericum perforatum | common St. John's wort | plant | herbaceous | widespread | n/a (already in CA) | CDFA | |
| Hypochaeris glabra | smooth catsear | plant | herbaceous | widespread | n/a (already in CA) | CO Weed List | |
| Hypochaeris radicata | rough catsear | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Isatis tinctoria | dyer's woad | plant | herbaceous | widespread | n/a (already in CA) | CDFA | |
| Kickxia elatine | sharpleaf cancerwort | plant | herbaceous | widespread | n/a (already in CA) | Weeds of CA | |
| Kochia scoparia | kochia | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Lactuca serriola | prickly lettuce | plant | herbaceous | widespread | n/a (already in CA) | Weeds of CA | |
| Lamium amplexicaule | henbit deadnettle | plant | herbaceous | widespread | n/a (already in CA) | Weeds of CA | |
| Lepidium latifolium | perennial pepperweed | plant | herbaceous | widespread | n/a (already in CA) | CDFA | |
| Leucanthemum vulgare | ox-eye daisy | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Lolium multiflorum | Italian ryegrass | plant | grass | widespread | n/a (already in CA) | Cal-IPC list | |
| Ludwigia hexapetala | Uruguay water-primrose | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Ludwigia peploides ssp. montevidensis | creeping water-primrose | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Lythrum hyssopifolium | hyssop loosestrife | 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 | |
| Malva niaceensis | bull mallow | plant | herbaceous | widespread | n/a (already in CA) | Weeds of CA | |
| Malva parviflora | cheeseweed mallow | plant | herbaceous | widespread | n/a (already in CA) | Weeds of CA | |
| Malva sylvestris | high mallow | plant | herbaceous | widespread | n/a (already in CA) | Weeds of CA | |
| Marrubium vulgare | white horehound | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Medicago polymorpha | California burclover | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Mentha pulegium | pennyroyal | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Mesembryanthemum crystallinum | crystalline iceplant | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Myriophyllum spicatum | Eurasian watermilfoil | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Nicotiana glauca | tree tobacco | plant | woody | widespread | n/a (already in CA) | Cal-IPC list | |
| Oxalis corniculata | creeping woodsorrel | plant | herbaceous | widespread | n/a (already in CA) | Weeds of CA | |
| Oxalis pes-caprae | Bermuda buttercup | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Pennisetum clandestinum | kikuyugrass | plant | grass | widespread | n/a (already in CA) | OR Weed List | |
| 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 |
