Plant Species Reported to be Invasive in Natural Areas List

Source: Pacific Northwest Exotic Pest Plant Council, 1998

Source URL: http://depts.washington.edu/waipc/about.shtml

157 Species

Subject Name Scientific Name Family U.S. Nativity
Canada thistle Cirsium arvense (L.) Scop. Asteraceae Exotic
tree-of-heaven Ailanthus altissima (P. Mill.) Swingle Simaroubaceae Exotic
musk thistle Carduus nutans L. Asteraceae Exotic
spotted knapweed Centaurea stoebe ssp. micranthos (Gugler) Hayek Asteraceae Exotic
yellow nutsedge Cyperus esculentus L. Cyperaceae Native
Russian olive Elaeagnus angustifolia L. Elaeagnaceae Exotic
English ivy Hedera helix L. Araliaceae Exotic
hydrilla Hydrilla verticillata (L. f.) Royle Hydrocharitaceae Exotic
tall fescue Festuca arundinacea Schreb. Poaceae Exotic
purple loosestrife Lythrum salicaria L. Lythraceae Exotic
Eurasian water-milfoil Myriophyllum spicatum L. Haloragaceae Exotic
white poplar Populus alba L. Salicaceae Exotic
johnsongrass Sorghum halepense (L.) Pers. Poaceae Exotic
common mullein Verbascum thapsus L. Scrophulariaceae Exotic
common periwinkle Vinca minor L. Apocynaceae Exotic
black locust Robinia pseudoacacia L. Fabaceae (Leguminosae) Native
bull thistle Cirsium vulgare (Savi) Ten. Asteraceae Exotic
spiny plumeless thistle Carduus acanthoides L. Asteraceae Exotic
leafy spurge Euphorbia esula L. Euphorbiaceae Exotic
Japanese knotweed Fallopia japonica (Houttuyn) Ronse-Decraene Polygonaceae Exotic
Siberian elm Ulmus pumila L. Ulmaceae Exotic
yellow toadflax Linaria vulgaris P. Mill. Scrophulariaceae Exotic
puncturevine Tribulus terrestris L. Zygophyllaceae Exotic
field bindweed Convolvulus arvensis L. Convolvulaceae Exotic
gorse Ulex europaeus L. Fabaceae (Leguminosae) Exotic
Mediterranean sage Salvia aethiopis L. Lamiaceae Exotic
poison-hemlock Conium maculatum L. Apiaceae Exotic
squarrose knapweed Centaurea virgata Lam. Asteraceae Exotic
Russian knapweed Rhaponticum repens (L.) Hidalgo Asteraceae Exotic
yellow starthistle Centaurea solstitialis L. Asteraceae Exotic
rush skeletonweed Chondrilla juncea L. Asteraceae Exotic
Scotch broom Cytisus scoparius (L.) Link Fabaceae (Leguminosae) Exotic
common St. Johnswort Hypericum perforatum L. Clusiaceae Exotic
common crupina Crupina vulgaris Cass. Asteraceae Exotic
tansy ragwort Senecio jacobaea L. Asteraceae Exotic
slenderflower thistle Carduus tenuiflorus W. Curtis Asteraceae Exotic
mouseear hawkweed Hieracium pilosella L. Asteraceae Exotic
orange hawkweed Hieracium aurantiacum L. Asteraceae Exotic
meadow hawkweed Hieracium caespitosum Dumort. Asteraceae Exotic
sulfur cinquefoil Potentilla recta L. Rosaceae Exotic
Scotch thistle Onopordum acanthium L. Asteraceae Exotic
dalmatian toadflax Linaria dalmatica ssp. dalmatica (L.) P. Mill. Scrophulariaceae Exotic
Italian plumeless thistle Carduus pycnocephalus L. Asteraceae Exotic
diffuse knapweed Centaurea diffusa Lam. Asteraceae Exotic
orchardgrass Dactylis glomerata L. Poaceae Exotic
giant hogweed Heracleum mantegazzianum Sommier & Levier Apiaceae Exotic
Dyer's woad Isatis tinctoria L. Brassicaceae Exotic
velvetleaf Abutilon theophrasti Medik Malvaceae Exotic
jointed goatgrass Aegilops cylindrica Host Poaceae Exotic
creeping bentgrass Agrostis stolonifera L. Poaceae Exotic
camelthorn Alhagi maurorum Medik Fabaceae (Leguminosae) Exotic
slender meadow foxtail Alopecurus myosuroides Huds. Poaceae Exotic
European beachgrass Ammophila arenaria (L.) Link Poaceae Exotic
wild chervil Anthriscus sylvestris (L.) Hoffmann Apiaceae Exotic
absinth wormwood Artemisia absinthium L. Asteraceae Exotic
tall oatgrass Arrhenatherum elatius (L.) Beauv. ex J.& K. Presl Poaceae Exotic
common burdock Arctium minus Bernh. Asteraceae Exotic
fivehook bassia Bassia hyssopifolia (Pallas) Kuntz Chenopodiaceae Exotic
white bryony Bryonia alba L. Cucurbitaceae Exotic
field brome Bromus arvensis L. Poaceae Exotic
smooth brome Bromus inermis Leyss. Poaceae Exotic
poverty brome Bromus sterilis L. Poaceae Exotic
cheatgrass Bromus tectorum L. Poaceae Exotic
hoary cress Lepidium draba (L.) Desv Brassicaceae Exotic
brown knapweed Centaurea jacea L. Asteraceae Exotic
longspine sandbur Cenchrus longispinus (Hack.) Fern Poaceae Native
bighead knapweed Centaurea macrocephala Puschk. ex Willd. Asteraceae Exotic
black knapweed Centaurea nigra L. Asteraceae Exotic
alpine knapweed Centaurea nigrescens Willd Asteraceae Exotic
blue mustard Chorispora tenella (Pallas) DC. Brassicaceae Exotic
common hawthorn Crataegus monogyna Jacq. Rosaceae Exotic
smallseed alfalfa dodder Cuscuta approximata Bab. Cuscutaceae Exotic
clover dodder Cuscuta epithymum (L.) L. Cuscutaceae Exotic
houndstongue Cynoglossum officinale L. Boraginaceae Exotic
Queen Anne's lace, wild carrot Daucus carota L. Apiaceae Exotic
spurgelaurel Daphne laureola L. Thymelaeaceae Exotic
flixweed Descurainia sophia (L.) Webb ex Prantl Brassicaceae Exotic
foxglove Digitalis purpurea L. Scrophulariaceae Exotic
common viper's bugloss Echium vulgare L. Boraginaceae Exotic
quackgrass Elymus repens (L.) Gould Poaceae Exotic
redstem filaree Erodium cicutarium (L.) L'Hér. ex Ait. Geraniaceae Exotic
Australian burnweed Erechtites minimus (Poir.) DC Asteraceae Exotic
fennel Foeniculum vulgare P. Mill. Apiaceae Exotic
French broom Genista monspessulana (L.) L. Johnson Fabaceae (Leguminosae) Exotic
babysbreath Gypsophila paniculata L Caryophyllaceae Exotic
halogeton Halogeton glomeratus (Bieb.) C.A. Mey. Chenopodiaceae Exotic
Texas blueweed Helianthus ciliaris DC. Asteraceae Native
Venice mallow Hibiscus trionum L. Malvaceae Exotic
common velvetgrass Holcus lanatus L. Poaceae Exotic
hairy cat's ear Hypochaeris radicata L. Asteraceae Exotic
English holly Ilex aquifolium L. Aquifoliaceae Exotic
yellow iris Iris pseudacorus L. Iridaceae Exotic
Mexican fireweed Kochia scoparia (L.) A.J. Scott Chenopodiaceae Exotic
prickly lettuce Lactuca serriola L. Asteraceae Exotic
lepyrodiclis Lepyrodiclis holosteoides (C.A. Mey.) Fenzl ex Fisch. & C.A. Mey. Caryophyllaceae Exotic
perennial pepperweed Lepidium latifolium L. Brassicaceae Exotic
oxeye daisy Leucanthemum vulgare Lam. Asteraceae Exotic
birdsfoot trefoil Lotus corniculatus L. Fabaceae (Leguminosae) Exotic
perennial ryegrass Lolium perenne L. Poaceae Exotic
meadow fescue Festuca pratensis Huds. Poaceae Exotic
pineapple-weed Matricaria discoidea DC. Asteraceae Exotic
yellow sweet-clover Melilotus officinalis (L.) Lam. Fabaceae (Leguminosae) Exotic
wild four-o'clock Mirabilis nyctaginea (Michx.) MacM. Nyctaginaceae Native
white mulberry Morus alba L. Moraceae Exotic
African rue Peganum harmala L. Zygophyllaceae Exotic
timothy Phleum pratense L. Poaceae Exotic
hawkweed oxtongue Picris hieracioides L. Asteraceae Exotic
Canada bluegrass Poa compressa L. Poaceae Exotic
cultivated knotweed Persicaria wallichii Greuter & Burdet Polygonaceae Exotic
giant knotweed Fallopia sachalinensis (F. Schmidt) Ronse-Decraene Polygonaceae Exotic
Austrian fieldcress Rorippa austriaca (Crantz) Bess. Brassicaceae Exotic
red sorrel Rumex acetosella L. Polygonaceae Exotic
curly dock Rumex crispus L. Polygonaceae Exotic
Himalayan blackberry Rubus armeniacus Focke Rosaceae Exotic
cutleaf blackberry Rubus laciniatus Willd. Rosaceae Exotic
Russian-thistle Salsola tragus L. Chenopodiaceae Exotic
tumble mustard Sisymbrium altissimum L. Brassicaceae Exotic
bladder campion Silene latifolia ssp. alba (Mill.) Greuter & Burdet Caryophyllaceae Exotic
field sowthistle Sonchus arvensis ssp. arvensis L. Asteraceae Exotic
bittersweet nightshade Solanum dulcamara L. Solanaceae Exotic
smooth cordgrass Spartina alterniflora Loisel. Poaceae Native
common cordgrass Spartina anglica C.E. Hubbard Poaceae Exotic
saltmeadow cordgrass Spartina patens (Ait.) Muhl. Poaceae Native
swainsonpea Sphaerophysa salsula (Pallas) DC. Fabaceae (Leguminosae) Exotic
medusahead Taeniatherum caput-medusae (L.) Nevski Poaceae Exotic
common tansy Tanacetum vulgare L. Asteraceae Exotic
spreading hedgeparsley Torilis arvensis (Huds.) Link Apiaceae Exotic
western salsify Tragopogon dubius Scop. Asteraceae Exotic
false chamomile Tripleurospermum perforatum (Merat) M. Lainz Asteraceae Exotic
moth mullein Verbascum blattaria L. Scrophulariaceae Exotic
hairy vetch Vicia villosa Roth Fabaceae (Leguminosae) Exotic
rattail fescue Vulpia myuros (L.) K.C. Gmel. Poaceae Exotic
Syrian beancaper Zygophyllum fabago L. Zygophyllaceae Exotic
European mountain-ash Sorbus aucuparia L. Rosaceae Exotic
fivestamen tamarisk Tamarix chinensis Lour. Tamaricaceae Exotic
colonial bentgrass Agrostis capillaris L. Poaceae Exotic
sweet vernalgrass Anthoxanthum odoratum L. Poaceae Exotic
sweet cherry Prunus avium (L.) L. Rosaceae Exotic
sour cherry Prunus cerasus L. Rosaceae Exotic
Mahaleb cherry Prunus mahaleb L. Rosaceae Exotic
cultivated currant Ribes rubrum L. Grossulariaceae Exotic
dog rose Rosa canina L. Rosaceae Exotic
sweetbriar rose Rosa eglanteria L. Rosaceae Exotic
meadow salsify Tragopogon lamottei L. Asteraceae Exotic
butterflybush Buddleja davidii Franch. Buddlejaceae Exotic
herb-robert Geranium robertianum L. Geraniaceae Exotic
wall lettuce Mycelis muralis (L.) Dumort. Asteraceae Exotic
bird vetch Vicia cracca L. Fabaceae (Leguminosae) Exotic
interrupted windgrass Apera interrupta (L.) Beauv. Poaceae Exotic
perennial false-brome Brachypodium sylvaticum (Huds.) Beauv. Poaceae Exotic
rattlesnake brome Bromus briziformis Fisch. & C.A. Mey. Poaceae Exotic
red valerian Centranthus ruber (L.) DC. Valerianaceae Exotic
evergreen clematis Clematis vitalba L. Ranunculaceae Exotic
German velvetgrass Holcus mollis L. Poaceae Exotic
cherry laurel Prunus laurocerasus L. Rosaceae Exotic
yellow glandweed Parentucellia viscosa (L.) Caruel Scrophulariaceae Exotic
watercress Nasturtium officinale R. Brown Brassicaceae Exotic