Scientific Namesort icon Common Name Type Subtype Extent Risk of Introduction First Source
Abutilon theophrasti velvet leaf plant herbaceous widespread n/a (already in CA) Weeds of CA
Acacia dealbata silver wattle plant woody limited n/a (already in CA) Cal-IPC list
Acacia melanoxylon black acacia plant woody limited n/a (already in CA) Cal-IPC list
Acacia paradoxa kangaroothorn plant woody limited n/a (already in CA) CDFA
Acaena novae-zelandiae biddy-biddy plant herbaceous limited n/a (already in CA) CDFA
Acaena pallida pale biddy-biddy plant herbaceous limited n/a (already in CA) CDFA
Achnatherum brachychaetum punagrass plant grass limited n/a (already in CA) CDFA
Acroptilon repens Russian knapweed plant herbaceous widespread n/a (already in CA) MT Weed List
Aegilops cylindrica jointed goatgrass plant grass widespread n/a (already in CA) WA Weed List
Aegilops ovata ovate goatgrass plant grass limited n/a (already in CA) CDFA
Aegilops triuncialis barb goatgrass plant grass widespread n/a (already in CA) CDFA
Aeginetia spp. aeginetia plant herbaceous not present moderate USDA Plant/Pest
Aeschynomene rudis rough jointvetch plant woody limited n/a (already in CA) CDFA
Ageratina adenophora croftonweed plant herbaceous limited n/a (already in CA) Cal-IPC list
Agrostis avenacea Pacific bentgrass plant grass limited n/a (already in CA) Cal-IPC list
Agrostis stolonifera creeping bentgrass plant grass limited n/a (already in CA) Cal-IPC list
Ailanthus altissima tree-of-heaven plant woody widespread n/a (already in CA) Cal-IPC list
Albizia lophantha plume acacia plant woody limited n/a (already in CA) Cal-IPC list
Alectra spp. alectra plant herbaceous not present moderate USDA Plant/Pest
Alhagi maurorum camelthorn plant woody limited n/a (already in CA) NV Weed List
Allaria petiolata garlic mustard plant herbaceous not present high OR Weed List
Allium paniculatum panicled onion plant herbaceous limited n/a (already in CA) CDFA
Allium vineale wild garlic plant herbaceous limited n/a (already in CA) CDFA
Alopecurus myosuroides blackgrass plant grass limited n/a (already in CA) WA Weed List
Alternanthera philoxeroides alligator weed plant herbaceous limited n/a (already in CA) Cal-IPC list
Alternanthera sessilis sessile joyweed plant herbaceous not present moderate USDA Plant/Pest
Alyssum corsicum yellowtuft plant herbaceous not present moderate OR Weed List
Alyssum murale yellowtuft plant herbaceous not present moderate OR Weed List
Amaranthus albus prostrate pigweed plant herbaceous widespread n/a (already in CA) Weeds of CA
Amaranthus hybridus slim amaranth plant herbaceous widespread n/a (already in CA) Weeds of CA
Amaranthus retroflexus redroot amaranth plant herbaceous widespread n/a (already in CA) Weeds of CA
Ambrosia artemisifolia ragweed plant herbaceous widespread n/a (already in CA) OR Weed List
Ambrosia tomentosa skeletonleaf bursage plant herbaceous not present high ID Weed List
Ambrosia trifida giant ragweed plant herbaceous limited n/a (already in CA) CDFA
Ammophila arenaria European beachgrass plant grass widespread n/a (already in CA) Cal-IPC list
Amorpha fruticosa indigobush plant woody limited n/a (already in CA) WA Weed List
Anchusa arvensis annual bugloss plant herbaceous limited n/a (already in CA) WA Weed List
Anchusa officinalis common bugloss plant herbaceous limited n/a (already in CA) OR Weed List
Anoda cristata spurred anoda plant herbaceous limited n/a (already in CA) CO Weed List
Anthemis arvensis scentless chamomile plant herbaceous limited n/a (already in CA) CO Weed List
Anthemis cotula mayweed chamomile plant herbaceous widespread n/a (already in CA) CO Weed List
Anthoxanthum odoratum sweet vernalgrass plant grass widespread n/a (already in CA) Cal-IPC list
Anthriscus sylvestris wild chervil plant herbaceous not present high WA Weed List
Araujia sericifera bladderflower plant woody limited n/a (already in CA) CDFA
Arctium minus common burdock plant herbaceous limited n/a (already in CA) CO Weed List
Arctotheca calendula (fertile) fertile capeweed plant herbaceous limited n/a (already in CA) CDFA
Arctotheca calendula (sterile) sterile capeweed plant herbaceous limited n/a (already in CA) CDFA
Artemisia absinthium absinthe wormwood plant herbaceous limited n/a (already in CA) CO Weed List
Arundo donax giant reed plant grass widespread n/a (already in CA) Cal-IPC list
Ascophyllum nodosum common brown algae plant algae limited n/a (already in CA) Hoffman NOAA
Asparagus asparagoides bridal creeper plant herbaceous limited n/a (already in CA) Cal-IPC list
Asphodelus fistulosus onionweed plant herbaceous limited n/a (already in CA) Cal-IPC list
Atriplex semibaccata Australian saltbush plant herbaceous widespread n/a (already in CA) Cal-IPC list
Avena barbata slender wild oat plant grass widespread n/a (already in CA) Cal-IPC list
Avena fatua wild oat plant grass widespread n/a (already in CA) Cal-IPC list
Avena sterilis animated oat plant grass limited n/a (already in CA) APHIS
Azolla pinnata mosquito fern plant herbaceous not present moderate USDA Plant/Pest
Bassia hyssopifolia fivehook bassia plant herbaceous limited n/a (already in CA) Cal-IPC list
Bellardia trixago bellardia plant herbaceous limited n/a (already in CA) Cal-IPC list
Brachypodium distachyon annual false-brome plant grass widespread n/a (already in CA) Cal-IPC list
Brachypodium sylvaticum perennial false-brome plant grass limited n/a (already in CA) Cal-IPC list
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 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
Bryonia alba white bryony plant herbaceous not present moderate WA Weed List
Buddleja davidii butterflybush plant woody limited n/a (already in CA) OR Weed List
Butomus umbellatus flowering rush plant herbaceous not present high WA Weed 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 chalepensis lens-podded white-top plant herbaceous limited n/a (already in CA) CDFA
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 acanthoides plumeless thistle plant herbaceous limited n/a (already in CA) CDFA
Carduus nutans musk thistle 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 baeticus smooth distaff thistle plant herbaceous limited n/a (already in CA) CDFA
Carthamus lanatus woolly distaff thistle plant herbaceous widespread n/a (already in CA) CDFA
Carthamus leucocaulos whitestem distaff thistle plant herbaceous not present moderate CDFA
Carthamus oxyacantha wild safflower plant herbaceous limited n/a (already in CA) USDA Plant/Pest
Carum carvi wild caraway plant herbaceous not present high CO Weed List
Caulacanthus ustulatus red algae plant algae unknown VALUE REQUIRED Hoffman NOAA
Caulerpa brachypus Caulerpa brachypus plant algae unknown high Hoffman NOAA
Caulerpa racemosa Caulerpa racemosa plant algae VALUE REQUIRED high Hoffman NOAA
Caulerpa taxifolia Mediterranean strain plant algae limited high OR Weed List
Cenchrus echinatus southern sandbur plant grass widespread n/a (already in CA) CDFA
Cenchrus incertus coast sandbur plant grass widespread n/a (already in CA) CDFA
Cenchrus longispinus mat 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