Bacteria | | Actinobacteria [phylum] | Clavibacter sepedonicus (potato ring rot) | Present | | | CABI and EPPO (1997); EPPO (2022) |
Bacteria | | Firmicutes | Bacillus thuringiensis kurstaki | Present | | | CABI (Undated) |
Bacteria | | Proteobacteria | Erwinia amylovora (fireblight) | Present | | | EPPO (2022) |
Bacteria | | Proteobacteria | Xanthomonas fragariae (angular leaf spot) | Present | | | CABI/EPPO (2013); EPPO (2022) |
Eukaryota | Chromista | Oomycota | Phytophthora infestans (Phytophthora blight) | Present | | | UK, CAB International (1982) |
Eukaryota | Fungi | Ascomycota | Blumeria graminis (powdery mildew of grasses and cereals) | Present | | | CABI and EPPO (2004) |
Eukaryota | Fungi | Ascomycota | Didymascella thujina (cedar leaf blight) | Present, Widespread | Native | Invasive | Kope (2000) |
Eukaryota | Fungi | Ascomycota | Gremmeniella abietina (Brunchorstia disease) | Present | | | UK, CAB International (1989); EPPO (2022) |
Eukaryota | Fungi | Ascomycota | Mycosphaerella pini (Dothistroma blight) | Present | | | CABI and EPPO (2010); EPPO (2022) |
Eukaryota | Fungi | Ascomycota | Sphaeropsis sapinea (Sphaeropsis blight) | Present | | | Ginns (1986) |
Eukaryota | Fungi | Basidiomycota | Chrysomyxa rhododendri (European Rhododendron rust) | Present | Native | | Cummins and Stevenson (1956); CABI/EPPO (2012) |
Eukaryota | Fungi | Basidiomycota | Cronartium ribicola (white pine blister rust) | Present | | | UK, CAB International (1983); EPPO (2022) |
Eukaryota | Fungi | Chytridiomycota | Synchytrium endobioticum (wart disease of potato) | Present, Localized | | | CABI and EPPO (2015); EPPO (2022) |
Eukaryota | Metazoa | Annelida | Lumbricus rubellus | Present | Introduced | | Gates (1972) |
Eukaryota | Metazoa | Annelida | Lumbricus terrestris | Present | Introduced | Invasive | Gates (1972) |
Eukaryota | Metazoa | Arthropoda | Adelges piceae (balsam woolly adelgid) | Present | Introduced | Invasive | Milne (1990); CABI/EPPO (2012); CABI (Undated) |
Eukaryota | Metazoa | Arthropoda | Agrotis ipsilon (black cutworm) | Present | | | Anon (1979) |
Eukaryota | Metazoa | Arthropoda | Blattella germanica (German cockroach) | Present | Introduced | | Insect Identification (2016) |
Eukaryota | Metazoa | Arthropoda | Carcinus maenas (European shore crab) | Present, Localized | Introduced | | CABI (Undated) |
Eukaryota | Metazoa | Arthropoda | Conotrachelus nenuphar (plum curculio) | Present | | | UK, CAB International (1954); EPPO (2022) |
Eukaryota | Metazoa | Arthropoda | Dendroctonus rufipennis (spruce beetle) | Present, Widespread | | | CABI and EPPO (2004); EPPO (2022) |
Eukaryota | Metazoa | Arthropoda | Dendroctonus valens (red turpentine beetle) | Present | | | EPPO (2022) |
Eukaryota | Metazoa | Arthropoda | Drosophila suzukii (spotted wing drosophila) | Present | | | CABI and EPPO (2016); EPPO (2022) |
Eukaryota | Metazoa | Arthropoda | Forficula auricularia (European earwig) | Present | Introduced | Invasive | McLeod (1962) |
Eukaryota | Metazoa | Arthropoda | Gilpinia hercyniae (spruce sawfly) | Present | Introduced | Invasive | Clark et al. (1973); Magasi and Syme (1984); EPPO (2022) |
Eukaryota | Metazoa | Arthropoda | Harmonia axyridis (harlequin ladybird) | Present | | | Hicks et al. (2010) |
Eukaryota | Metazoa | Arthropoda | Homarus americanus (American lobster) | Present, Widespread | Native | | CABI (Undated) |
Eukaryota | Metazoa | Arthropoda | Limnoria lignorum (gribble) | Present, Widespread | | Invasive | Menzies (1957) |
Eukaryota | Metazoa | Arthropoda | Lymantria dispar (gypsy moth) | Present | | | Canadian Food Inspection Agency (2015); EPPO (2022) |
Eukaryota | Metazoa | Arthropoda | Myzus persicae (green peach aphid) | Present | | | UK, CAB International (1979) |
Eukaryota | Metazoa | Arthropoda | Neodiprion sertifer (European pine sawfly) | Present, Localized | Introduced | Invasive | Clark and Singh (1975); Griffiths et al. (1984); Hall (1996) |
Eukaryota | Metazoa | Arthropoda | Ostrinia nubilalis (European maize borer) | Present | | | Mutuura and Munroe (1970); EPPO (2022) |
Eukaryota | Metazoa | Arthropoda | Otiorhynchus sulcatus (vine weevil) | Present | | | O'Brien and Wibmer (1982); EPPO (2022) |
Eukaryota | Metazoa | Arthropoda | Plutella xylostella (diamondback moth) | Present | | | Squires et al. (2009) |
Eukaryota | Metazoa | Arthropoda | Rhagoletis cingulata (cherry fruit fly) | Absent, Unconfirmed presence record(s) | | | CABI and EPPO (2015); Harris (1989); EPPO (2022) |
Eukaryota | Metazoa | Arthropoda | Rhagoletis fausta (black cherry fruit fly) | Present | | | Berlocher and Dixon (2004); EPPO (2022) |
Eukaryota | Metazoa | Arthropoda | Rhagoletis pomonella (apple maggot) | Present, Few occurrences | | | Parsons and Sinclair (2018) |
Eukaryota | Metazoa | Arthropoda | Rhyacionia buoliana (European pine shoot moth) | Present | | | EPPO (2022) |
Eukaryota | Metazoa | Arthropoda | Spodoptera frugiperda (fall armyworm) | Present | | | Troubridge and Lafontaine (2022) |
Eukaryota | Metazoa | Arthropoda | Vespula germanica (German wasp) | Present | Introduced | Invasive | CABI (Undated) |
Eukaryota | Metazoa | Arthropoda | Vespula vulgaris (wasp, common) | Present | Native | | Invasive Species Specialist Group (ISSG) (2011) |
Eukaryota | Metazoa | Chordata | Alosa pseudoharengus (alewife) | Present | Native | | Scott and Crossman (1973) |
Eukaryota | Metazoa | Chordata | Botrylloides violaceus (violet tunicate) | Present | Introduced | | Callahan et al. (2010) |
Eukaryota | Metazoa | Chordata | Branta canadensis (Canada goose) | Present, Widespread | Native | | Mowbray et al. (2002) |
Eukaryota | Metazoa | Chordata | Canis latrans (Coyote) | Present | Native | | Chubbs and Phillips (2005); Parker (1995); NatureServe (2013) |
Eukaryota | Metazoa | Chordata | Columba livia (pigeons) | Present | Introduced | | Invasive Species Specialist Group (ISSG) (2011) |
Eukaryota | Metazoa | Chordata | Esox lucius (pike) | Present | Native | | Froese and Pauly (2004) |
Eukaryota | Metazoa | Chordata | Molothrus ater (brown-headed cowbird) | Present | | | Invasive Species Specialist Group (ISSG) (2011) |
Eukaryota | Metazoa | Chordata | Neovison vison (American mink) | Present | Native | | Northcott et al. (1974); NatureServe (2015) |
Eukaryota | Metazoa | Chordata | Oncorhynchus mykiss (rainbow trout) | Present | Introduced | | Behnke (2002) |
Eukaryota | Metazoa | Chordata | Passer domesticus (house sparrow) | Present | Introduced | Invasive | Invasive Species Specialist Group (ISSG) (2011) |
Eukaryota | Metazoa | Chordata | Petromyzon marinus (sea lamprey) | Present | Native | | Coker et al. (2001) |
Eukaryota | Metazoa | Chordata | Rangifer tarandus (reindeer) | Present | | | CABI Data Mining (2001) |
Eukaryota | Metazoa | Chordata | Salmo trutta (sea trout) | Present | Introduced | | Froese and Pauly (2004) |
Eukaryota | Metazoa | Chordata | Salvelinus fontinalis (brook trout) | Present | Native | | Froese and Pauly (2004); Robins et al. (1991) |
Eukaryota | Metazoa | Chordata | Salvelinus namaycush (lake trout) | Present | Native | | Froese and Pauly (2004) |
Eukaryota | Metazoa | Chordata | Sturnus vulgaris (common starling) | Present | | | CABI (Undated) |
Eukaryota | Metazoa | Chordata | Vulpes vulpes (red fox) | Present | Introduced | Invasive | Invasive Species Specialist Group (ISSG) (2011) |
Eukaryota | Metazoa | Mollusca | Deroceras laeve (meadow slug) | Present | Native | | White-McLean and Redford (2011) |
Eukaryota | Metazoa | Mollusca | Ensis directus | Present | Native | | Abbott and Morris (1995) |
Eukaryota | Metazoa | Mollusca | Limax maximus (leopard slug) | Present | Introduced | | Brooks and Brooks (1940); NatureServe (2014) |
Eukaryota | Metazoa | Mollusca | Littorina littorea (common periwinkle) | Present | Introduced | Invasive | Bequaert (1943); Blakeslee and Byers (2008); Brawley et al. (2009) |
Eukaryota | Metazoa | Nematoda | Anguillicoloides crassus | Present, Widespread | Introduced | Invasive | Aieta and Oliveira (2009) |
Eukaryota | Metazoa | Nematoda | Bursaphelenchus xylophilus (pine wilt nematode) | Present | | | Bowers et al. (1992); CABI and EPPO (2015); EPPO (2022) |
Eukaryota | Metazoa | Nematoda | Globodera pallida (white potato cyst nematode) | Present, Localized | Introduced | | CABI/EPPO (2011); Stone et al. (1977); Dandurand et al. (2019); EPPO (2022) |
Eukaryota | Metazoa | Nematoda | Globodera rostochiensis (yellow potato cyst nematode) | Present, Localized | Introduced | Invasive | Proudfoot (1977); CABI/EPPO (2011); EPPO (2022) |
Eukaryota | Plantae | Pteridophyta | Pteridium aquilinum (bracken) | Present | Native | | Darbyshire (2003) |
Eukaryota | Plantae | Rhodophyta | Polysiphonia brodiei | Present | Introduced | | South and Hooper (1980); South and Tittley (1986) |
Eukaryota | Plantae | Spermatophyta | Acer platanoides (Norway maple) | Present | Introduced | Invasive | Royal Botanical Gardens Canada (2003); CABI (Undated) |
Eukaryota | Plantae | Spermatophyta | Acer pseudoplatanus (sycamore) | Present, Planted | Introduced | | CABI (Undated) |
Eukaryota | Plantae | Spermatophyta | Agropyron cristatum (crested wheatgrass) | Present | Introduced | | GBIF (2015) |
Eukaryota | Plantae | Spermatophyta | Agrostis capillaris (common bent) | Present | Introduced | | USDA-NRCS (2016) |
Eukaryota | Plantae | Spermatophyta | Alnus glutinosa (European alder) | Present | Introduced | Invasive | CABI (Undated) |
Eukaryota | Plantae | Spermatophyta | Alopecurus pratensis (meadow foxtail) | Present | Introduced | | USDA-NRCS (2015) |
Eukaryota | Plantae | Spermatophyta | Ambrosia artemisiifolia (common ragweed) | Present | Native | | Bassett and Crompton (1975); USDA-ARS (2016); USDA-NRCS (2016); EPPO (2022) |
Eukaryota | Plantae | Spermatophyta | Ambrosia psilostachya (perennial ragweed) | Present | | | EPPO (2022) |
Eukaryota | Plantae | Spermatophyta | Amelanchier spicata (dwarf serviceberry) | Present | | | USA, University of Maine (2009) |
Eukaryota | Plantae | Spermatophyta | Anethum graveolens (dill) | Present | Introduced | | USDA-NRCS (2015) |
Eukaryota | Plantae | Spermatophyta | Anthemis cotula (dog fennel) | Present | Introduced | | NatureServe (2002) |
Eukaryota | Plantae | Spermatophyta | Anthoxanthum odoratum (sweet vernal grass) | Present | Introduced | | USDA-NRCS (2013) |
Eukaryota | Plantae | Spermatophyta | Arceuthobium pusillum (eastern dwarf mistletoe) | Present | Native | Invasive | Hawksworth and Wiens (1996); EPPO (2022) |
Eukaryota | Plantae | Spermatophyta | Aronia x prunifolia | Present | Native | | Kemper Center for Home Gardening (2009) |
Eukaryota | Plantae | Spermatophyta | Arrhenatherum elatius (false oat-grass) | Present | Introduced | | USDA-NRCS (2016) |
Eukaryota | Plantae | Spermatophyta | Bidens frondosa (beggarticks) | Present | Native | | USDA-NRCS (2014); EPPO (2022) |
Eukaryota | Plantae | Spermatophyta | Brachypodium sylvaticum (slender false brome) | Absent, Intercepted only | | | Barkworth et al. (2007) |
Eukaryota | Plantae | Spermatophyta | Brassica nigra (black mustard) | Present | Introduced | | USDA-NRCS (2013) |
Eukaryota | Plantae | Spermatophyta | Brassica rapa (field mustard) | Present | Introduced | | Flora of North America Editorial Committee (2018) |
Eukaryota | Plantae | Spermatophyta | Bromus hordeaceus (soft brome) | Present | Introduced | | Brouillet et al. (2006) |
Eukaryota | Plantae | Spermatophyta | Bromus secalinus (rye brome) | Present | Introduced | | Canadian Food Inspection Agency (2015) |
Eukaryota | Plantae | Spermatophyta | Cardamine flexuosa (wavy bittercress) | Present | Introduced | | USDA-NRCS (2019) |
Eukaryota | Plantae | Spermatophyta | Carduus nutans (nodding thistle) | Present, Localized | Introduced | Invasive | Desrochers et al. (1988) |
Eukaryota | Plantae | Spermatophyta | Ceratophyllum demersum (coontail) | Present, Widespread | | | Westerdahl and Getsinger (1988) |
Eukaryota | Plantae | Spermatophyta | Cirsium arvense (creeping thistle) | Present | Introduced | | Moore (1975); Darbyshire (2003) |
Eukaryota | Plantae | Spermatophyta | Cirsium vulgare (spear thistle) | Present | Introduced | Invasive | Darbyshire (2003) |
Eukaryota | Plantae | Spermatophyta | Conyza canadensis (Canadian fleabane) | Present | Native | | USDA-ARS (2004) |
Eukaryota | Plantae | Spermatophyta | Cornus sericea (redosier dogwood) | Present | Native | | Brouillet et al. (2006) |
Eukaryota | Plantae | Spermatophyta | Cuscuta campestris (field dodder) | Present | Native | | USA, USDA-ARS (2008) |
Eukaryota | Plantae | Spermatophyta | Cynoglossum officinale (hound's tongue) | Absent, Intercepted only | | | Upadhyaya et al. (1988); Upadhyaya and Cranston (1991) |
Eukaryota | Plantae | Spermatophyta | Dactylis glomerata (cocksfoot) | Present | Introduced | | USDA-NRCS (2015) |
Eukaryota | Plantae | Spermatophyta | Danthonia decumbens (heath grass) | Present, Localized | Introduced | | Darbyshire (2003); USDA-NRCS (2015) |
Eukaryota | Plantae | Spermatophyta | Echinochloa crus-galli (barnyard grass) | Present | Introduced | Naturalized | USDA-NRCS (2014) |
Eukaryota | Plantae | Spermatophyta | Elodea nuttallii (Nuttall's waterweed) | Present | Native | | USDA-NRCS (2009) |
Eukaryota | Plantae | Spermatophyta | Euphorbia esula (leafy spurge) | Present | | | EPPO (2022) |
Eukaryota | Plantae | Spermatophyta | Fallopia convolvulus (black bindweed) | Present | Introduced | | USDA-NRCS (2015) |
Eukaryota | Plantae | Spermatophyta | Fallopia japonica (Japanese knotweed) | Present | Introduced | Invasive | AAC (2003); EPPO (2022) |
Eukaryota | Plantae | Spermatophyta | Fallopia sachalinensis (giant knotweed) | Present | Introduced | | USA, USDA-NRCS (2008); EPPO (2022) |
Eukaryota | Plantae | Spermatophyta | Festuca arundinacea (tall fescue) | Present | Introduced | | eMonocot (2016) |
Eukaryota | Plantae | Spermatophyta | Festuca pratensis (meadow fescue) | Present | Introduced | | USDA-NRCS (2016); Aiken et al. (1996) |
Eukaryota | Plantae | Spermatophyta | Fragaria vesca (wild strawberry) | Present | Native | | USDA-NRCS (2013) |
Eukaryota | Plantae | Spermatophyta | Glechoma hederacea (ground ivy) | Present | Introduced | | USDA-NRCS (2013) |
Eukaryota | Plantae | Spermatophyta | Glyceria maxima (reed sweet-grass) | Present | Introduced | | Brouillet et al. (2006); USDA-NRCS (2009) |
Eukaryota | Plantae | Spermatophyta | Heracleum mantegazzianum (giant hogweed) | Present | | | EPPO (2022) |
Eukaryota | Plantae | Spermatophyta | Holcus lanatus (common velvet grass) | Present | Introduced | Invasive | Brouillet et al. (2006); USDA-NRCS (2012) |
Eukaryota | Plantae | Spermatophyta | Hypericum perforatum (St John's wort) | Present | Introduced | | USDA-NRCS (2015) |
Eukaryota | Plantae | Spermatophyta | Hypochaeris radicata (cat's ear) | Present | Introduced | | USDA-ARS (2013) |
Eukaryota | Plantae | Spermatophyta | Impatiens glandulifera (Himalayan balsam) | Present | Introduced | | USA, USDA-NRCS (2008); EPPO (2022) |
Eukaryota | Plantae | Spermatophyta | Isatis tinctoria (dyer's woad) | Present | Introduced | | USDA-ARS (2015) |
Eukaryota | Plantae | Spermatophyta | Juncus effusus (common rush) | Present | Native | | Kirschner (2002) |
Eukaryota | Plantae | Spermatophyta | Juncus tenuis (slender rush) | Present | Native | | USDA-ARS (2016) |
Eukaryota | Plantae | Spermatophyta | Lathyrus odoratus (sweet pea) | Present | Introduced | | USDA-NRCS (2017) |
Eukaryota | Plantae | Spermatophyta | Lepidium virginicum (Virginian peppercress) | Present | Native | | USDA-ARS (2016) |
Eukaryota | Plantae | Spermatophyta | Leucanthemum vulgare (oxeye daisy) | Present | Introduced | | Clements et al. (2004) |
Eukaryota | Plantae | Spermatophyta | Linaria dalmatica (dalmatian toadflax) | Present, Localized | Introduced | | Vujnovic and Wein (2005) |
Eukaryota | Plantae | Spermatophyta | Linaria vulgaris (common toadflax) | Present | Introduced | | USDA-NRCS (2015) |
Eukaryota | Plantae | Spermatophyta | Lolium perenne (perennial ryegrass) | Present | Introduced | | USDA-NRCS (2013) |
Eukaryota | Plantae | Spermatophyta | Lupinus polyphyllus (garden lupin) | Present | Native | | USDA-NRCS (2015); ILDIS (2015); EPPO (2022) |
Eukaryota | Plantae | Spermatophyta | Lythrum salicaria (purple loosestrife) | Present | Introduced | | Mal et al. (1992) |
Eukaryota | Plantae | Spermatophyta | Medicago lupulina (black medick) | Present | Introduced | | USDA-NRCS (2017) |
Eukaryota | Plantae | Spermatophyta | Melilotus albus (honey clover) | Present | Introduced | Invasive | USDA-NRCS (2013) |
Eukaryota | Plantae | Spermatophyta | Melilotus officinalis (yellow sweet clover) | Present | Introduced | | USDA-NRCS (2017) |
Eukaryota | Plantae | Spermatophyta | Nasturtium microphyllum (one-row watercress) | Present | Introduced | | USDA-NRCS (2013) |
Eukaryota | Plantae | Spermatophyta | Onopordum acanthium (scotch thistle) | Present | Introduced | | Darbyshire (2003) |
Eukaryota | Plantae | Spermatophyta | Pastinaca sativa (parsnip) | Present, Localized | Introduced | Invasive | Cain et al. (2010) |
Eukaryota | Plantae | Spermatophyta | Phalaris arundinacea (reed canary grass) | Present | Native | | USDA-ARS (2003) |
Eukaryota | Plantae | Spermatophyta | Phleum pratense (timothy grass) | Present | Introduced | | Kew (2015) |
Eukaryota | Plantae | Spermatophyta | Phragmites australis (common reed) | Present | Native | | USDA-ARS (2012) |
Eukaryota | Plantae | Spermatophyta | Pilosella aurantiaca (orange hawkweed) | Present | Introduced | | Scoggan (1979) |
Eukaryota | Plantae | Spermatophyta | Pilosella officinarum (mouse-ear hawkweed) | Present | Introduced | Invasive | Scoggan (1979) |
Eukaryota | Plantae | Spermatophyta | Poa annua (annual meadowgrass) | Present | Introduced | | USDA-ARS (2014) |
Eukaryota | Plantae | Spermatophyta | Poa compressa (Canada bluegrass) | Present | Introduced | Invasive | Hitchcock (1951); Native Plant Database (2015) |
Eukaryota | Plantae | Spermatophyta | Poa nemoralis (wood bluegrass) | Present | Introduced | | Meades et al. (2000); USDA-NRCS (2016) |
Eukaryota | Plantae | Spermatophyta | Poa pratensis (smooth meadow-grass) | Present | | | ISSG (2015); Canadensys (2016) |
Eukaryota | Plantae | Spermatophyta | Polygonum arenastrum (common knotweed) | Present | Introduced | | Darbyshire (2003) |
Eukaryota | Plantae | Spermatophyta | Polygonum aviculare (prostrate knotweed) | Present | | | McNeill (1981) |
Eukaryota | Plantae | Spermatophyta | Prunella vulgaris (self-heal) | Present | Native | | WCSP (2016) |
Eukaryota | Plantae | Spermatophyta | Pyracantha coccinea (scarlet firethorn) | Present | Introduced | | ZipcodeZoo (2017) |
Eukaryota | Plantae | Spermatophyta | Rosa multiflora (multiflora rose) | Present | Introduced | Invasive | Munger (2002) |
Eukaryota | Plantae | Spermatophyta | Rosa rugosa (rugosa rose) | Present | Introduced | | USDA-NRCS (2009); EPPO (2022) |
Eukaryota | Plantae | Spermatophyta | Rumex acetosella (sheep's sorrel) | Present | Introduced | Invasive | Stopps et al. (2011) |
Eukaryota | Plantae | Spermatophyta | Sagittaria latifolia (broadleaf arrowhead) | Present | Native | | USDA-NRCS (2009) |
Eukaryota | Plantae | Spermatophyta | Senecio jacobaea (common ragwort) | Present, Widespread | Introduced | Invasive | Scoggan (1979) |
Eukaryota | Plantae | Spermatophyta | Senecio vulgaris | Present, Widespread | Introduced | Invasive | Robinson et al. (2003) |
Eukaryota | Plantae | Spermatophyta | Setaria viridis (green foxtail) | Present, Localized | | | Douglas et al. (1985) |
Eukaryota | Plantae | Spermatophyta | Silene latifolia subsp. alba (white campion) | Present | Introduced | | Alberta Weed Monitoring Network (2014) |
Eukaryota | Plantae | Spermatophyta | Solidago sempervirens (seaside goldenrod) | Present | Native | | USDA-ARS (2018) |
Eukaryota | Plantae | Spermatophyta | Sonchus asper (spiny sow-thistle) | Present | Introduced | | USDA-NRCS (2018) |
Eukaryota | Plantae | Spermatophyta | Sonchus oleraceus (common sowthistle) | Present | Introduced | | USDA-NRCS (2014) |
Eukaryota | Plantae | Spermatophyta | Symphyotrichum novi-belgii (New York aster) | Present | Native | | Tiner (1987) |
Eukaryota | Plantae | Spermatophyta | Tanacetum vulgare (tansy) | Present | Introduced | | Crompton et al. (1988) |
Eukaryota | Plantae | Spermatophyta | Taraxacum officinale complex (dandelion) | Present, Widespread | Introduced | | Stewart-Wade et al. (2002) |
Eukaryota | Plantae | Spermatophyta | Typha latifolia (broadleaf cattail) | Present | Native | | Grace and Harrison (1986) |
Eukaryota | Plantae | Spermatophyta | Urtica dioica (stinging nettle) | Present | Native | | USDA-NRCS (2015) |
Eukaryota | Plantae | Spermatophyta | Urtica urens (annual nettle) | Present | | | Flora of North America Editorial Committee (1997) |
Virus | | | Potato spindle tuber viroid (spindle tuber of potato) | Absent, Formerly present | | | CABI and EPPO (2014) |