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 | |
|---|---|---|---|---|---|---|---|
| Brassica nigra | black mustard | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Brassica rapa | birdsrape mustard | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Brassica tournefortii | Saharan mustard | plant | herbaceous | limited | n/a (already in CA) | Cal-IPC list | |
| Briza maxima | big quackingrass | plant | grass | widespread | n/a (already in CA) | Cal-IPC list | |
| Bromus diandrus | ripgut brome | plant | grass | widespread | n/a (already in CA) | Cal-IPC list | |
| Bromus hordeaceus | soft brome | plant | grass | widespread | n/a (already in CA) | Cal-IPC list | |
| Bromus japonicus | Japanese brome | plant | grass | widespread | n/a (already in CA) | Cal-IPC list | |
| Bromus madritensis ssp. rubens | red brome | plant | grass | widespread | n/a (already in CA) | Cal-IPC list | |
| Bromus tectorum | downy brome | plant | grass | widespread | n/a (already in CA) | Cal-IPC list | |
| Cabomba caroliniana | Carolina fanwort | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| 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 | |
| Cardaria pubescens | hairy whitetop | plant | herbaceous | limited | 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 debeauxii | meadow knapweed | plant | herbaceous | limited | n/a (already in CA) | Cal-IPC list | |
| Centaurea diffusa | diffuse knapweed | plant | herbaceous | limited | 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 | |
| Centaurea virgata ssp. Squarrosa | squarrose knapweed | 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 | |
| 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 | |
| Conicosia pugioniformis | narrowleaf iceplant | plant | herbaceous | limited | 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 | |
| Cotoneaster franchetii | orange cotoneaster | plant | woody | limited | n/a (already in CA) | Cal-IPC list | |
| Cotoneaster lacteus | Parney's cotoneaster | plant | woody | limited | n/a (already in CA) | Cal-IPC list | |
| Cotoneaster pannosus | silverleaf cotoneaster | plant | woody | limited | n/a (already in CA) | Cal-IPC list | |
| Cotula coronopifolia | brassbuttons | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Crataegus monogyna | hawthorn | plant | woody | limited | 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 | |
| Cynoglossum officinale | houndstongue | plant | herbaceous | limited | n/a (already in CA) | Cal-IPC list | |
| Cynosurus echinatus | hedgehog dogtailgrass | plant | grass | widespread | n/a (already in CA) | Cal-IPC list | |
| Cyperus difformis | variable flatsedge | plant | herbaceous | limited | n/a (already in CA) | Weeds of CA | |
| 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 | |
| Cytisus striatus | Portuguese broom | plant | woody | limited | n/a (already in CA) | Cal-IPC list | |
| 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 | |
| Descurainia sophia | flixweed | plant | herbaceous | limited | n/a (already in CA) | Cal-IPC list | |
| Digitalis purpurea | foxglove | plant | herbaceous | limited | 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 | |
| Echinochloa oryzicola | early watergrass | plant | grass | limited | n/a (already in CA) | Weeds of CA | |
| Echinochloa phyllopogon | rice barnyardgrass | plant | grass | limited | n/a (already in CA) | Weeds of CA | |
| Echium candicans | pride-of-Madeira | plant | herbaceous | limited | n/a (already in CA) | Cal-IPC list | |
| 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 | |
| Ehrharta erecta | erect veldtgrass | plant | grass | limited | n/a (already in CA) | Cal-IPC list | |
| Eichhornia crassipes | water hyacinth | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Elaeagnus angustifolia | Russian-olive | plant | woody | limited | n/a (already in CA) | Cal-IPC list | |
| Emex spinosa | devil's-thorn | plant | herbaceous | limited | n/a (already in CA) | Cal-IPC list | |
| Erechtites glomerata | Australian fireweed | plant | herbaceous | limited | n/a (already in CA) | Cal-IPC list | |
| Erechtites minima | Australian fireweed | plant | herbaceous | limited | 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 | |
| Gaura sinuata | wavy-leaved gaura | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| 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 | |
| Glyceria declinata | waxy mannagrass | plant | grass | limited | 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 | |
| Linaria vulgaris | yellow toadflax | plant | herbaceous | limited | n/a (already in CA) | Cal-IPC list | |
| Lobularia maritima | sweet alyssum | plant | herbaceous | limited | 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 |
