State Noxious Weeds @ Invasive.org

The following species have been listed on a noxious weed law in North America. For more information on each species, including the listing sources, images, and publication links, click on the species.

Subject Name	Scientific Name	Family	Order
velvetleaf	Abutilon theophrasti Medik	Malvaceae	Malvales
kangaroothorn	Acacia paradoxa DC.	Fabaceae (Leguminosae)	Fabales
New Zealand Burr	Acaena magellanica (Lam.) Vahl	Rosaceae	Rosales
biddy-biddy	Acaena novae-zelandica Kirk	Rosaceae	Rosales
pale biddy-biddy	Acaena pallida (T. Kirk) J. W. Dawson	Rosaceae	Rosales
Norway maple	Acer platanoides L.	Aceraceae	Sapindales
Sycamore maple	Acer pseudoplatanus L.	Aceraceae	Sapindales
punagrass	Achnatherum brachychaetum (Godr.) Barkworth	Poaceae	Cyperales
Russian knapweed	Acroptilon repens (L.) DC.	Asteraceae	Asterales
jointed goatgrass	Aegilops cylindrica Host	Poaceae	Cyperales
ovate goatgrass	Aegilops geniculata Roth	Poaceae	Cyperales
barb goatgrass	Aegilops triuncialis L	Poaceae	Cyperales
aeginetia	Aeginetia spp. L.	Orobanchaceae	Scrophulariales
bishops goutweed	Aegopodium podagraria L.	Apiaceae	Apiales
rough jointgrass	Aeschynomene rudis Benth	Fabaceae (Leguminosae)	Fabales
northern jointvetch	Aeschynomene virginica (L.) B.S.P	Fabaceae (Leguminosae)	Fabales
croftonweed	Ageratina adenophora (Spreng.) King & H.E. Robins.	Asteraceae	Asterales
corn cockle	Agrostemma githago L	Caryophyllaceae	Caryophyllales
tree-of-heaven	Ailanthus altissima (P. Mill.) Swingle	Simaroubaceae	Sapindales
mimosa	Albizia julibrissin Durazz.	Fabaceae (Leguminosae)	Fabales
alectra	Alectra spp. Thunb.	Scrophulariaceae	Scrophulariales
camelthorn	Alhagi maurorum Medik	Fabaceae (Leguminosae)	Fabales
garlic mustard	Alliaria petiolata (Bieb.) Cavara & Grande	Brassicaceae	Capparales
wild onion	Allium canadense L.	Liliaceae	Liliales
white garlic	Allium neapolitanum Cirillo	Liliaceae	Liliales
panicled onion	Allium paniculatum L.	Liliaceae	Liliales
onions	Allium spp. L.	Liliaceae	Liliales
wild garlic	Allium vineale L.	Liliaceae	Liliales
slender meadow foxtail	Alopecurus myosuroides Huds.	Poaceae	Cyperales
alligatorweed	Alternanthera philoxeroides (Mart.) Griseb.	Amaranthaceae	Caryophyllales
sessile joyweed	Alternanthera sessilis (L.) R. Br. ex DC.	Amaranthaceae	Caryophyllales
joyweed	Alternanthera spp. Forssk.	Amaranthaceae	Caryophyllales
common ragweed	Ambrosia artemisiifolia L.	Asteraceae	Asterales
annual ragweed	Ambrosia artemisiifolia var. elatior (L.) Descourtils	Asteraceae	Asterales
woollyleaf bursage	Ambrosia grayi (A. Nels.) Shinners	Asteraceae	Asterales
skeletonleaf bursage	Ambrosia tomentosa Nutt.	Asteraceae	Asterales
giant ragweed	Ambrosia trifida L.	Asteraceae	Asterales
indigobush	Amorpha fruticosa L.	Fabaceae (Leguminosae)	Fabales
Amur peppervine	Ampelopsis brevipedunculata (Maxim.) Trautv.	Vitaceae	Rhamnales
small bugloss	Anchusa arvensis (L.) Bieb	Boraginaceae	Lamiales
common bugloss	Anchusa officinalis L.	Boraginaceae	Lamiales
spurred anoda	Anoda cristata (L.) Schlecht	Malvaceae	Malvales
corn chamomile	Anthemis arvensis L.	Asteraceae	Asterales
stinking chamomile	Anthemis cotula L	Asteraceae	Asterales
wild chervil	Anthriscus sylvestris (L.) Hoffmann	Apiaceae	Apiales
white bladderflower	Araujia sericifera Brot.	Asclepiadaceae	Gentianales
common burdock	Arctium minus Bernh.	Asteraceae	Asterales
capeweed	Arctotheca calendula (L.) Levyns	Asteraceae	Asterales
shoebutton ardisia	Ardisia elliptica Thunb	Myrsinaceae	Primulales
absinth wormwood	Artemisia absinthium L.	Asteraceae	Asterales
small carpgrass	Arthraxon hispidus (Thunb.) Makino	Poaceae	Cyperales
giant reed	Arundo donax L.	Poaceae	Cyperales
onionweed	Asphodelus fistulosus Linnaeus	Liliaceae	Liliales
wild oat	Avena fatua L.	Poaceae	Cyperales
sterile oat	Avena sterilis Linnaeus	Poaceae	Cyperales
pinnate mosquitofern	Azolla pinnata R. Brown	Azollaceae	Hydropteridales
Monnier waterhyssop	Bacopa monnieri (L.) Pennell	Scrophulariaceae	Scrophulariales
yellow rocket	Barbarea vulgaris Ait. f.	Brassicaceae	Capparales
Mexican fireweed	Bassia scoparia (L.) A.J. Scott	Chenopodiaceae	Caryophyllales
Japanese barberry	Berberis thunbergii DC.	Berberidaceae	Ranunculales
European barberry	Berberis vulgaris L	Berberidaceae	Ranunculales
hoary alyssum	Berteroa incana (L.) DC	Brassicaceae	Capparales
perennial false-brome	Brachypodium sylvaticum (Huds.) Beauv.	Poaceae	Cyperales
Indian mustard	Brassica juncea (L.) Czern	Brassicaceae	Capparales
black mustard	Brassica nigra (L.) W.D.J. Koch	Brassicaceae	Capparales
mustard	Brassica spp.	Brassicaceae	Capparales
African mustard	Brassica tournefortii Gouan	Brassicaceae	Capparales
bald brome	Bromus racemosus L.	Poaceae	Cyperales
rye brome	Bromus secalinus L.	Poaceae	Cyperales
cheatgrass	Bromus tectorum L.	Poaceae	Cyperales
white bryony	Bryonia alba L.	Cucurbitaceae	Violales
butterflybush	Buddleja davidii Franch.	Buddlejaceae	Scrophulariales
hare's ear	Bupleurum rotundifolium n/a L.	Apiaceae	Apiales
flowering rush	Butomus umbellatus L.	Butomaceae	Alismatales
fanwort	Cabomba caroliniana L	Cabombaceae	Nymphaeales
hedge bindweed	Calystegia sepium (L.) R. Br	Convolvulaceae	Solanales
hedge false bindweed	Calystegia sepium ssp. sepium (L.) R. Br.	Convolvulaceae	Solanales
marijuana	Cannabis sativa L	Cannabaceae	Urticales
narrowleaf bittercress	Cardamine impatiens L.	Brassicaceae	Capparales
lens-podded whitetop	Cardaria chalapensis (L.) Hand.-Maz	Brassicaceae	Capparales
hoary cress	Cardaria draba (L.) Desv	Brassicaceae	Capparales
hairy whitetop	Cardaria pubescens (C.A. Mey.)	Brassicaceae	Capparales
balloonvine	Cardiospermum halicacabum L.	Sapindaceae	Sapindales
spiny plumeless thistle	Carduus acanthoides L.	Asteraceae	Asterales
curly plumeless thistle	Carduus crispus L.	Asteraceae	Asterales
nodding plumeless thistle	Carduus nutans leiophyllus (Petrovic) Stojanov & Stef	Asteraceae	Asterales
musk thistle	Carduus nutans L.	Asteraceae	Asterales
Italian plumeless thistle	Carduus pycnocephalus L.	Asteraceae	Asterales
plumeless thistle	Carduus spp. L.	Asteraceae	Asterales
slenderflower thistle	Carduus tenuiflorus W. Curtis	Asteraceae	Asterales
Japanese sedge	Carex kobomugi Ohwi	Cyperaceae	Cyperales
woolly distaff thistle	Carthamus lanatus L.	Asteraceae	Asterales
woolly distaff thistle	Carthamus lanatus ssp. creticus (L.) Holmboe	Asteraceae	Asterales
whitestem distaff thistle	Carthamus leucocaulos Sibith. & Sm.	Asteraceae	Asterales
wild safflower	Carthamus oxyacanthus M. Bieberstein	Asteraceae	Asterales
common caraway	Carum carvi L.	Apiaceae	Apiales
gray sheoak	Casuarina glauca Sieb. ex Spreng	Casuarinaceae	Casuarinales
Mediterranean clone of caulerpa	Caulerpa taxifolia (Vahl) C. Agardth	Caulerpaceae	Caulerpales
bushkiller	Cayratia japonica (Thunb.) Gagnepain	Vitaceae	Rhamnales
oriental bittersweet	Celastrus orbiculatus Thunb.	Celastraceae	Celastrales
southern sandbur	Cenchrus echinatus L.	Poaceae	Cyperales
longspine sandbur	Cenchrus longispinus (Hack.) Fern	Poaceae	Cyperales
field sandbur	Cenchrus spinifex Cav.	Poaceae	Cyperales
purple starthistle	Centaurea calcitrapa L.	Asteraceae	Asterales
diffuse knapweed	Centaurea diffusa Lam.	Asteraceae	Asterales
Iberian starthistle	Centaurea iberica Trev. ex Spreng	Asteraceae	Asterales
brown knapweed	Centaurea jacea L.	Asteraceae	Asterales
bighead knapweed	Centaurea macrocephala Puschk. ex Willd.	Asteraceae	Asterales
Malta starthistle	Centaurea melitensis L.	Asteraceae	Asterales
black knapweed	Centaurea nigra L.	Asteraceae	Asterales
Vochin knapweed	Centaurea nigrescens Willd	Asteraceae	Asterales
yellow starthistle	Centaurea solstitialis L.	Asteraceae	Asterales
spotted knapweed	Centaurea stoebe ssp. micranthos (Gugler) Hayek	Asteraceae	Asterales
sulphur knapweed	Centaurea sulphurea Willd	Asteraceae	Asterales
squarrose knapweed	Centaurea virgata Lam.	Asteraceae	Asterales
squarrose knapweed	Centaurea virgata ssp. squarrosa Lam.	Asteraceae	Asterales
meadow knapweed	Centaurea x moncktonii C. E. Britton	Asteraceae	Asterales
common tarweed	Centromadia pungens ssp. pungens (Hook. & Arn.) Greene	Asteraceae	Asterales
watersprite	Ceratopteris thalictroides (L.) Brongn.	Parkeriaceae	Polypodiales
dwarf snapdragon	Chaenorhinum minus (L.) Lange	Scrophulariaceae	Scrophulariales
rush skeletonweed	Chondrilla juncea L.	Asteraceae	Asterales
blue mustard	Chorispora tenella (Pallas) DC.	Brassicaceae	Capparales
pilipiliula	Chrysopogon aciculatus (Retz.) Trin.	Poaceae	Cyperales
chicory	Cichorium intybus L.	Asteraceae	Asterales
spotted waterhemlock	Cicuta maculata L.	Apiaceae	Apiales
Canada thistle	Cirsium arvense (L.) Scop.	Asteraceae	Asterales
Japanese thistle	Cirsium japonicum Fisch. ex DC.	Asteraceae	Asterales
yellowspine thistle	Cirsium ochrocentrum Gray	Asteraceae	Asterales
thistle	Cirsium spp. P. Mill.	Asteraceae	Asterales
wavyleaf thistle	Cirsium undulatum (Nutt.) Spreng	Asteraceae	Asterales
bull thistle	Cirsium vulgare (Savi) Ten.	Asteraceae	Asterales
tangerine	Citrus reticulata Blanco	Rutaceae	Sapindales
oriental virginsbower	Clematis orientalis L.	Ranunculaceae	Ranunculales
evergreen clematis	Clematis vitalba L.	Ranunculaceae	Ranunculales
soapbush	Clidemia hirta (L.) D. Don	Melastomataceae	Myrtales
blessed thistle	Cnicus benedictus L.	Asteraceae	Asterales
Asian nakedwood	Colubrina asiatica (L.) Brongn.	Rhamnaceae	Rhamnales
Benghal dayflower	Commelina benghalensis L.	Commelinaceae	Commelinales
poison-hemlock	Conium maculatum L.	Apiaceae	Apiales
field bindweed	Convolvulus arvensis L.	Convolvulaceae	Solanales
horseweed	Conyza canadensis (L.) Cronq.	Asteraceae	Asterales
greater swinecress	Coronopus squamatus (Forsk.) Aschers.	Brassicaceae	Capparales
purple pampasgrass	Cortaderia jubata (Lem.) Stapf	Poaceae	Cyperales
Mexican brassbuttons	Cotula mexicana (DC.) Cabrera	Asteraceae	Asterales
swamp stonecrop	Crassula helmsii A. Berger	Crassulaceae	Rosales
rattlebox	Crotalaria spp. L.	Fabaceae (Leguminosae)	Fabales
common crupina	Crupina vulgaris Cass.	Asteraceae	Asterales
dudaim melon	Cucumis melo var. dudaim (L.) Naud.	Cucurbitaceae	Violales
gooseberry gourd	Cucumis myriocarpus E. Mey. ex Naud.	Cucurbitaceae	Violales
carrotwood	Cupaniopsis anacardioides (A. Rich.) Radlk.	Sapindaceae	Sapindales
smallseed alfalfa dodder	Cuscuta approximata Bab.	Cuscutaceae	Solanales
Japanese dodder	Cuscuta japonica Choisy	Cuscutaceae	Solanales
giant dodder	Cuscuta reflexa Roxb.	Cuscutaceae	Solanales
dodder	Cuscuta spp. L.	Cuscutaceae	Solanales
black swallowwort	Cynanchum louiseae Kartesz & Gandhi	Asclepiadaceae	Gentianales
European swallowwort	Cynanchum rossicum (Kleopov) Barbarich	Asclepiadaceae	Gentianales
white swallowwort	Cynanchum vincetoxicum (L.) Pers.	Asclepiadaceae	Gentianales
cardoon	Cynara cardunculus L.	Asteraceae	Asterales
Ethiopian dogstooth grass	Cynodon aethiopicus W.D. Clayton & Harlan	Poaceae	Cyperales
bermudagrass	Cynodon dactylon (L.) Pers	Poaceae	Cyperales
Magennis' dogstooth grass	Cynodon magennisii Hurcombe	Poaceae	Cyperales
African bermudagrass	Cynodon nlemfuensis Vanderyst	Poaceae	Cyperales
African bermudagrass	Cynodon nlemfuensis var. nlemfuensis Vanderyst	Poaceae	Cyperales
African bermudagrass	Cynodon nlemfuensis var. robustus W.D. Clayton & Harlan	Poaceae	Cyperales
stargrass	Cynodon plectostachyus (K. Schum.) Pilger	Poaceae	Cyperales
Bermudagrass	Cynodon spp.	Poaceae	Cyperales
African dogstooth grass	Cynodon transvaalensis Burtt-Davy	Poaceae	Cyperales
houndstongue	Cynoglossum officinale L.	Boraginaceae	Lamiales
yellow nutsedge	Cyperus esculentus L.	Cyperaceae	Cyperales
purple nutsedge	Cyperus rotundus L.	Cyperaceae	Cyperales
Scotch broom	Cytisus scoparius (L.) Link	Fabaceae (Leguminosae)	Fabales
striated broom	Cytisus striatus (Hill) Rothm	Fabaceae (Leguminosae)	Fabales
spurgelaurel	Daphne laureola L.	Thymelaeaceae	Myrtales
jimsonweed	Datura stramonium L.	Solanaceae	Solanales
Queen Anne's lace, wild carrot	Daucus carota L.	Apiaceae	Apiales
wild carrot	Daucus carota ssp. carota L.	Apiaceae	Apiales
African couchgrass	Digitaria abyssinica (A. Rich) Stapf	Poaceae	Cyperales
velvet fingergrass	Digitaria velutina (Forsk.) Beauv.	Poaceae	Cyperales
Virginia buttonweed	Diodia virginiana L	Rubiaceae	Rubiales
winged yam	Dioscorea alata L.	Dioscoreaceae	Dioscoreales
air-potato	Dioscorea bulbifera L.	Dioscoreaceae	Dioscoreales
common teasel	Dipsacus fullonum L.	Dipsacaceae	Dipsacales
cutleaf teasel	Dipsacus laciniatus L.	Dipsacaceae	Dipsacales
teasel	Dipsacus spp. L.	Dipsacaceae	Dipsacales
alfombrilla	Drymaria arenarioides Humboldt & Bonpland	Caryophyllaceae	Caryophyllales
heartleaf drymary	Drymaria cordata (L.) Willd. ex J.A. Schultes	Caryophyllaceae	Caryophyllales
barnyardgrass	Echinochloa crus-galli (L.) Beauv	Poaceae	Cyperales
wild cucumber	Echinocystis lobata (Michx.) Torr. & Gray	Cucurbitaceae	Violales
salvation jane	Echium plantagineum L.	Boraginaceae	Lamiales
blueweed	Echium vulgare L.	Boraginaceae	Lamiales
Brazilian egeria	Egeria densa Planch.	Hydrocharitaceae	Hydrocharitales
anchored waterhyacinth	Eichhornia azurea (Swartz) Kunth	Pontederiaceae	Liliales
waterhyacinth	Eichhornia crassipes (Mart.) Solms	Pontederiaceae	Liliales
Russian-olive	Elaeagnus angustifolia L.	Elaeagnaceae	Rhamnales
thorny olive	Elaeagnus pungens Thunb.	Elaeagnaceae	Rhamnales
autumn-olive	Elaeagnus umbellata Thunb.	Elaeagnaceae	Rhamnales
quackgrass	Elymus repens (L.) Gould	Poaceae	Cyperales
three-cornered jack	Emex australis Steinhall	Polygonaceae	Polygonales
spiny emex	Emex spinosa (Linnaeus) Campdera	Polygonaceae	Polygonales
hairy willowherb	Epilobium hirsutum L.	Onagraceae	Myrtales
giant horsetail	Equisetum telmateia Ehrh.	Equisetaceae	Equisetales
redstem filaree	Erodium cicutarium (L.) L'Hér. ex Ait.	Geraniaceae	Geraniales
winged burning bush	Euonymus alatus (Thunb.) Sieb.	Celastraceae	Celastrales
cypress spurge	Euphorbia cyparissias L.	Euphorbiaceae	Euphorbiales
toothed spurge	Euphorbia dentata Michx	Euphorbiaceae	Euphorbiales
leafy spurge	Euphorbia esula L.	Euphorbiaceae	Euphorbiales
grassleaf spurge	Euphorbia graminea Jacq.	Euphorbiaceae	Euphorbiales
wild poinsettia	Euphorbia heterophylla L	Euphorbiaceae	Euphorbiales
myrtle spurge	Euphorbia myrsinites L	Euphorbiaceae	Euphorbiales
eggleaf spurge	Euphorbia oblongata Griseb	Euphorbiaceae	Euphorbiales
serrate spurge	Euphorbia serrata L.	Euphorbiaceae	Euphorbiales
Geraldton carnation weed	Euphorbia terracina L.	Euphorbiaceae	Euphorbiales
hawk's eye	Euryops multifidus (Thunb.) DC.	Asteraceae	Asterales
mulberryweed	Fatoua villosa (Thunb.) Nakai	Moraceae	Urticales
field fescue	Festuca arvernensis Auquier, Kerguélen & Markgr.-Dannenb.	Poaceae	Cyperales
fennel	Foeniculum vulgare P. Mill.	Apiaceae	Apiales
glossy buckthorn	Frangula alnus P. Mill.	Rhamnaceae	Rhamnales
goatsrue	Galega officinalis L.	Fabaceae (Leguminosae)	Fabales
common hempnettle	Galeopsis tetrahit L.	Lamiaceae	Lamiales
smallflower galinsoga	Galinsoga parviflora Cav.	Asteraceae	Asterales
scarlet gaura	Gaura coccinea Nutt. ex Pursh	Onagraceae	Myrtales
Drummond's beeblossom	Gaura drummondii (Spach) Torr. & Gray	Onagraceae	Myrtales
wavyleaf gaura	Gaura sinuata Nutt. ex Ser	Onagraceae	Myrtales
French broom	Genista monspessulana (L.) L. Johnson	Fabaceae (Leguminosae)	Fabales
shining geranium	Geranium lucidum L.	Geraniaceae	Geraniales
herb-robert	Geranium robertianum L.	Geraniaceae	Geraniales
yellow hornpoppy	Glaucium flavum Crantz	Papaveraceae	Papaverales
mudmat	Glossostigma diandrum (L.) Kuntze	Scrophulariaceae	Scrophulariales
American mannagrass	Glyceria grandis var. grandis S. Watson	Poaceae	Cyperales
reed mannagrass	Glyceria maxima (Hartman) Holmb.	Poaceae	Cyperales
babysbreath	Gypsophila paniculata L	Caryophyllaceae	Caryophyllales
common salttree	Halimodendron halodendron (L. f.) Voss	Fabaceae (Leguminosae)	Fabales
halogeton	Halogeton glomeratus (Bieb.) C.A. Mey.	Chenopodiaceae	Caryophyllales
English ivy	Hedera helix L.	Araliaceae	Apiales
Atlantic Ivy	Hedera hibernica (Kirchn.) Bean.	Araliaceae	Apiales
common sunflower	Helianthus annuus L.	Asteraceae	Asterales
Texas blueweed	Helianthus ciliaris DC.	Asteraceae	Asterales
giant hogweed	Heracleum mantegazzianum Sommier & Levier	Apiaceae	Apiales
damesrocket	Hesperis matronalis L.	Brassicaceae	Capparales
tanglehead	Heteropogon contortus (L.) Beauv. ex Roemer & J.A. Schultes	Poaceae	Cyperales
Venice mallow	Hibiscus trionum L.	Malvaceae	Malvales
polar hawkweed	Hieracium atratum Fr.	Asteraceae	Asterales
orange hawkweed	Hieracium aurantiacum L.	Asteraceae	Asterales
meadow hawkweed	Hieracium caespitosum Dumort.	Asteraceae	Asterales
queen-devil hawkweed	Hieracium glomeratum Froel.	Asteraceae	Asterales
common hawkweed	Hieracium lachenalii K.C. Gmel.	Asteraceae	Asterales
smooth hawkweed	Hieracium laevigatum	Asteraceae	Asterales
mouseear hawkweed	Hieracium pilosella L.	Asteraceae	Asterales
kingdevil hawkweed	Hieracium piloselloides Vill.	Asteraceae	Asterales
yellow devil hawkweed	Hieracium x floribundum Wimmer & Grab. [caespitosum x lactucella]	Asteraceae	Asterales
hogpotato	Hoffmannseggia glauca (Ortega) Eifert	Fabaceae (Leguminosae)	Fabales
cape tulip	Homeria spp. Vent.	Iridaceae	Liliales
Japanese hop	Humulus japonicus Siebold & Zucc.	Cannabaceae	Urticales
hydrilla	Hydrilla verticillata (L. f.) Royle	Hydrocharitaceae	Hydrocharitales
common frogbit	Hydrocharis morsus-ranae L.	Hydrocharitaceae	Hydrocharitales
miramar weed	Hygrophila polysperma (Roxb.) T. Anders.	Acanthaceae	Scrophulariales
black henbane	Hyoscyamus niger L.	Solanaceae	Solanales
Canary Island St. Johnswort	Hypericum canariense L.	Clusiaceae	Theales
common St. Johnswort	Hypericum perforatum L.	Clusiaceae	Theales
hairy cat'sear	Hypochaeris radicata L.	Asteraceae	Asterales
ornamental jewelweed	Impatiens glandulifera Royle	Balsaminaceae	Geraniales
Brazilian satintail	Imperata brasiliensis Trinius	Poaceae	Cyperales
California satintail	Imperata brevifolia Vasey	Poaceae	Cyperales
cogongrass	Imperata cylindrica (L.) Beauv.	Poaceae	Cyperales
swamp morningglory	Ipomoea aquatica Forssk.	Convolvulaceae	Solanales
morningglory	Ipomoea spp. L.	Convolvulaceae	Solanales
threelobe morningglory	Ipomoea triloba L.	Convolvulaceae	Solanales
purple moonflower	Ipomoea turbinata Lag.	Convolvulaceae	Solanales
Douglas iris	Iris douglasiana Herbert	Iridaceae	Liliales
Rocky Mountain iris	Iris missouriensis Nutt.	Iridaceae	Liliales
yellowflag iris	Iris pseudacorus L.	Iridaceae	Liliales
Dyer's woad	Isatis tinctoria L.	Brassicaceae	Capparales
saramollagrass	Ischaemum rugosum Salisbury	Poaceae	Cyperales
poverty sumpweed	Iva axillaris Pursh	Asteraceae	Asterales
blue lettuce	Lactuca tatarica var. pulchella (Pursh) Breitung	Asteraceae	Asterales
oxygen weed	Lagarosiphon major (Ridley) Moss	Hydrocharitaceae	Hydrocharitales
yellow archangel	Lamiastrum galeobdolon (L.) Ehrend. & Polatschek	Lamiaceae	Lamiales
dotted duckmeat	Landoltia punctata (G.F.W. Mey.) D.H. Les & D.J. Crawford	Lemnaceae	Arales
European sticktight	Lappula squarrosa (Retz.) Dumort.	Boraginaceae	Lamiales
everlasting peavine	Lathyrus latifolius L.	Fabaceae (Leguminosae)	Fabales
perennial pepperweed	Lepidium latifolium L.	Brassicaceae	Capparales
upright pepperweed	Lepidium strictum (S. Watson) Rattan	Brassicaceae	Capparales
Chinese sprangletop	Leptochloa chinensis (L.) Nees	Poaceae	Cyperales
lepyrodiclis	Lepyrodiclis holosteoides (C.A. Mey.) Fenzl ex Fisch. & C.A. Mey.	Caryophyllaceae	Caryophyllales
sericea lespedeza	Lespedeza cuneata (Dum.-Cours.) G. Don	Fabaceae (Leguminosae)	Fabales
white leadtree	Leucaena leucocephala (Lam.) de Wit	Fabaceae (Leguminosae)	Fabales
oxeye daisy	Leucanthemum vulgare Lam.	Asteraceae	Asterales
border privet	Ligustrum obtusifolium Sieb. & Zucc.	Oleaceae	Scrophulariales
Chinese privet	Ligustrum sinense Lour.	Oleaceae	Scrophulariales
European privet	Ligustrum vulgare L.	Oleaceae	Scrophulariales
West Indian spongeplant	Limnobium laevigatum (Humb. & Bonpl. ex Willd.) Heine	Hydrocharitaceae	Hydrocharitales
American frogbit	Limnobium spongia (Bosc) L.C. Rich. ex Steud.	Hydrocharitaceae	Hydrocharitales
Indian marshweed	Limnophila indica (L.) Druce	Scrophulariaceae	Scrophulariales
limnophila	Limnophila sessiliflora (Vahl) Blume	Scrophulariaceae	Scrophulariales
Dalmatian toadflax	Linaria dalmatica (L.) P. Mill.	Scrophulariaceae	Scrophulariales
dalmatian toadflax	Linaria dalmatica ssp. dalmatica (L.) P. Mill.	Scrophulariaceae	Scrophulariales
broomleaf toadflax	Linaria genistifolia (L.) P. Mill.	Scrophulariaceae	Scrophulariales
yellow toadflax	Linaria vulgaris P. Mill.	Scrophulariaceae	Scrophulariales
poison ryegrass	Lolium temulentum L.	Poaceae	Cyperales
Japanese honeysuckle	Lonicera japonica Thunb.	Caprifoliaceae	Dipsacales
Amur honeysuckle	Lonicera maackii (Rupr.) Herder	Caprifoliaceae	Dipsacales
Morrow's honeysuckle	Lonicera morrowii Gray	Caprifoliaceae	Dipsacales
Tatarian honeysuckle	Lonicera tatarica L.	Caprifoliaceae	Dipsacales
Bell's honeysuckle	Lonicera x bella Zabel [morrowii × tatarica]	Caprifoliaceae	Dipsacales
water primrose	Ludwigia grandiflora hexapetala (Hook. & Arn.) Nesom & Kartesz	Onagraceae	Myrtales
creeping waterprimrose	Ludwigia peploides (Kunth) Raven	Onagraceae	Myrtales
primrose-willow	Ludwigia peruviana (L.) Hara	Onagraceae	Myrtales
Uruguay waterprimrose	Ludwigia uruguayensis Camb.) Hara	Onagraceae	Myrtales
African boxthorn	Lycium ferrocissimum Miers	Solanaceae	Solanales
Japanese climbing fern	Lygodium japonicum (Thunb. ex Murr.) Sw.	Lygodiaceae	Polypodiales
old world climbing fern	Lygodium microphyllum (Cav.) R. Br.	Lygodiaceae	Polypodiales
moneywort	Lysimachia nummularia L.	Primulaceae	Primulales
garden loosestrife	Lysimachia vulgaris L.	Primulaceae	Primulales
purple loosestrife	Lythrum salicaria L.	Lythraceae	Myrtales
loosestrife	Lythrum spp. L.	Lythraceae	Myrtales
European wand loosestrife	Lythrum virgatum L.	Lythraceae	Myrtales
leatherleaf mahonia	Mahonia bealei (Fortune) Carr.	Berberidaceae	Ranunculales
alkali mallow	Malvella leprosa (Ortega) Krapov.	Malvaceae	Malvales
California burclover	Medicago polymorpha L.	Fabaceae (Leguminosae)	Fabales
melaleuca	Melaleuca quinquenervia (Cav.) Blake	Myrtaceae	Myrtales
Banks melastoma	Melastoma malabathricum L.	Melastomataceae	Myrtales
Nepalese browntop	Microstegium vimineum (Trin.) A. Camus	Poaceae	Cyperales
African mile-a-minute	Mikania cordata (Burm. f.) B.L. Robins.	Asteraceae	Asterales
mile-a-minute	Mikania micrantha Kunth	Asteraceae	Asterales
spring millet	Milium vernale Bieb.	Poaceae	Cyperales
giant sensitiveplant	Mimosa diplotricha C. Wright ex Sauvalle	Fabaceae (Leguminosae)	Fabales
catclaw mimosa	Mimosa pellita Kunth ex Willd.	Fabaceae (Leguminosae)	Fabales
wild four-o'clock	Mirabilis nyctaginea (Michx.) MacM.	Nyctaginaceae	Caryophyllales
Amur silvergrass	Miscanthus sacchariflorus (Maxim.) Franch.	Poaceae	Cyperales
arrowleaved monochoria	Monochoria hastata (L.) Solms	Pontederiaceae	Liliales
monochoria	Monochoria vaginalis (Burm. f.) K. Presl ex Kunth	Pontederiaceae	Liliales
purple mistress	Moricandia arvensis (L.) DC.	Brassicaceae	Capparales
nimblewill	Muhlenbergia schreberi J.F. Gmel.	Poaceae	Cyperales
marsh dayflower	Murdannia keisak (Hassk.) Hand.-Maz.	Commelinaceae	Commelinales
true forget-me-not	Myosotis scorpioides L.	Boraginaceae	Lamiales
water starwort	Myosoton aquaticum (L.) Moench	Caryophyllaceae	Caryophyllales
parrotfeather	Myriophyllum aquaticum (Vell.) Verdc.	Haloragaceae	Haloragales
variable watermilfoil	Myriophyllum heterophyllum Michx.	Haloragaceae	Haloragales
Eurasian watermilfoil	Myriophyllum spicatum Linnaeus	Haloragaceae	Haloragales
brittleleaf naiad	Najas minor All.	Najadaceae	Najadales
matgrass	Nardus stricta L.	Poaceae	Cyperales
finestem needlegrass	Nassella tenuissima (Trin.) Barkworth	Poaceae	Cyperales
serrated tussock	Nassella trichotoma Hackel ex Arech.	Poaceae	Cyperales
burmareed	Neyraudia reynaudiana (Kunth) Keng ex A.S. Hitchc.	Poaceae	Cyperales
apple-of-Peru	Nicandra physalodes (L.) Gaertn.	Solanaceae	Solanales
slender false garlic	Nothoscordum gracile (Aiton) Stearn	Liliaceae	Liliales
Mexican waterlily	Nymphaea mexicana Zucc.	Nymphaeaceae	Nymphaeales
fragrant waterlily	Nymphaea odorata Ait.	Nymphaeaceae	Nymphaeales
yellow floatingheart	Nymphoides peltata (Gmel.) Kuntze	Menyanthaceae	Solanales
foxtail restharrow	Ononis alopecuroides L.	Fabaceae (Leguminosae)	Fabales
Scotch thistle	Onopordum acanthium L.	Asteraceae	Asterales
Illyrian cottonthistle	Onopordum illyricum L.	Asteraceae	Asterales
cottonthistle	Onopordum spp. L.	Asteraceae	Asterales
bull cottonthistle	Onopordum tauricum Willd.	Asteraceae	Asterales
jointed prickly pear	Opuntia aurantiaca Lindley	Cactaceae	Caryophyllales
star-of-Bethlehem	Ornithogalum umbellatum L.	Liliaceae	Liliales
desert broomrape	Orobanche cooperi (Gray) Heller	Orobanchaceae	Scrophulariales
small broomrape	Orobanche minor Smith	Orobanchaceae	Scrophulariales
branched broomrape	Orobanche ramosa L.	Orobanchaceae	Scrophulariales
broomrape	Orobanche spp. L.	Orobanchaceae	Scrophulariales
longstamen rice	Oryza longistaminata A. Chev. & Roehr.	Poaceae	Cyperales
red rice	Oryza punctata Kotzchy ex Steud.	Poaceae	Cyperales
brown-beard rice	Oryza rufipogon Griffiths	Poaceae	Cyperales
duck-lettuce	Ottelia alismoides (Linnaeus) Pers.	Hydrocharitaceae	Hydrocharitales
cressleaf groundsel	Packera glabella (Poir) C. Jeffrey	Asteraceae	Asterales
sewer vine	Paederia cruddasiana Prain	Rubiaceae	Rubiales
skunk-vine	Paederia foetida L.	Rubiaceae	Rubiales
blue panicum	Panicum antidotale Retz.	Poaceae	Cyperales
wild-proso millet	Panicum miliaceum L.	Poaceae	Cyperales
torpedograss	Panicum repens L.	Poaceae	Cyperales
opium poppy	Papaver somniferum L.	Papaveraceae	Papaverales
ricegrass paspalum	Paspalum scrobiculatum Linnaeus	Poaceae	Cyperales
wild parsnip	Pastinaca sativa L.	Apiaceae	Apiales
African rue	Peganum harmala L.	Zygophyllaceae	Sapindales
bufflegrass	Pennisetum ciliare (L.) Link	Poaceae	Cyperales
kikuyugrass	Pennisetum clandestinum Hochst. ex Chiov.	Poaceae	Cyperales
African feathergrass	Pennisetum macrourum Trinius	Poaceae	Cyperales
kyasumagrass	Pennisetum pedicellatum Trinius	Poaceae	Cyperales
mission grass	Pennisetum polystachion (Linnaeus) Schultes	Poaceae	Cyperales
crimson fountaingrass	Pennisetum setaceum (Forsk.) Chiov.	Poaceae	Cyperales
mile-a-minute weed	Persicaria perfoliata (L.) H. Gross	Polygonaceae	Polygonales
reed canarygrass	Phalaris arundinacea L.	Poaceae	Cyperales
Amur corktree	Phellodendron amurense Rupr.	Rutaceae	Sapindales
common reed	Phragmites australis (Cav.) Trin. ex Steud.	Poaceae	Cyperales
Mascarene Island leaf-flower	Phyllanthus tenellus Roxb.	Euphorbiaceae	Euphorbiales
chamber bitter	Phyllanthus urinaria L.	Euphorbiaceae	Euphorbiales
longleaf groundcherry	Physalis longifolia Nutt.	Solanaceae	Solanales
longleaf groundcherry	Physalis longifolia var. longifolia Nutt.	Solanaceae	Solanales
longleaf groundcherry	Physalis longifolia var. subglabrata (Mack. & Bush) Cronquist	Solanaceae	Solanales
starhair groundcherry	Physalis viscosa L.	Solanaceae	Solanales
hawkweed oxtongue	Picris hieracioides L.	Asteraceae	Asterales
waterlettuce	Pistia stratiotes L.	Araceae	Arales
bracted plantain	Plantago aristata Michx.	Plantaginaceae	Plantaginales
buckhorn plantain	Plantago lanceolata L.	Plantaginaceae	Plantaginales
plantains	Plantago spp. L.	Plantaginaceae	Plantaginales
annual bluegrass	Poa annua L.	Poaceae	Cyperales
water knotweed	Polygonum amphibium L.	Polygonaceae	Polygonales
longroot smartweed	Polygonum amphibium var. emersum Michx.	Polygonaceae	Polygonales
wild buckwheat	Polygonum convolvulus L.	Polygonaceae	Polygonales
Japanese knotweed	Polygonum cuspidatum Siebold & Zucc.	Polygonaceae	Polygonales
cultivated knotweed	Polygonum polystachyum Wallich ex Meisn.	Polygonaceae	Polygonales
Sakhalin knotweed	Polygonum sachalinense F. Schmidt ex Maxim.	Polygonaceae	Polygonales
Bohemian knotweed	Polygonum x bohemicum (J. Chrtek & Chrtkovß) Zika & Jacobson [cuspidatum x sachalinense]	Polygonaceae	Polygonales
common purslane	Portulaca oleracea L.	Portulacaceae	Caryophyllales
curlyleaf pondweed	Potamogeton crispus L.	Potamogetonaceae	Najadales
sulfur cinquefoil	Potentilla recta L.	Rosaceae	Rosales
devil's-claw	Proboscidea louisianica (P. Mill.) Thellung	Pedaliaceae	Scrophulariales
alapataco	Prosopis alpataco R. A. Philippi	Fabaceae (Leguminosae)	Fabales
algarobilla	Prosopis argentina Burkart	Fabaceae (Leguminosae)	Fabales
mesquite	Prosopis burkartii Muñoz	Fabaceae (Leguminosae)	Fabales
calden	Prosopis caldenia Burkart	Fabaceae (Leguminosae)	Fabales
cusqui	Prosopis calingastana Burkart	Fabaceae (Leguminosae)	Fabales
algarrobillo	Prosopis campestris Griesbach	Fabaceae (Leguminosae)	Fabales
mesquite	Prosopis castellanosii Burkart	Fabaceae (Leguminosae)	Fabales
algarrobo patagonica	Prosopis denudans Bentham	Fabaceae (Leguminosae)	Fabales
algarrobillo	Prosopis elata (Burkart) Burkart	Fabaceae (Leguminosae)	Fabales
Syrian mesquite	Prosopis farcta (Banks & Soland.) J.F. Macbr.	Fabaceae (Leguminosae)	Fabales
churqui	Prosopis ferox Griesbach	Fabaceae (Leguminosae)	Fabales
mesquite	Prosopis fiebrigii Harms	Fabaceae (Leguminosae)	Fabales
algarrobo paraguayo	Prosopis hassleri Harms ex Hassler	Fabaceae (Leguminosae)	Fabales
algarrobilla	Prosopis humilis Gillies ex Hooker & Arnott	Fabaceae (Leguminosae)	Fabales
barbe de tigre	Prosopis kuntzei Harms ex Hassler	Fabaceae (Leguminosae)	Fabales
kiawe	Prosopis pallida (Humb. & Bonpl. ex Willd.) Kunth	Fabaceae (Leguminosae)	Fabales
palo de hierro	Prosopis palmeri S. Watson	Fabaceae (Leguminosae)	Fabales
mastuerzo	Prosopis reptans reptans Bentham	Fabaceae (Leguminosae)	Fabales
mesquite	Prosopis rojasiana Burkart	Fabaceae (Leguminosae)	Fabales
mesquite	Prosopis ruizlealii Burkart	Fabaceae (Leguminosae)	Fabales
vinal	Prosopis ruscifolia Griesbach	Fabaceae (Leguminosae)	Fabales
albardon	Prosopis sericantha Gillies ex Hook. & Arn.	Fabaceae (Leguminosae)	Fabales
mesquite	Prosopis spp. L.	Fabaceae (Leguminosae)	Fabales
Argentine screwbean	Prosopis strombulifera (Lamarck) Bentham	Fabaceae (Leguminosae)	Fabales
lata	Prosopis torquata (Cavan. ex Lagasca y Segura) DC.	Fabaceae (Leguminosae)	Fabales
velvet mesquite	Prosopis velutina Woot.	Fabaceae (Leguminosae)	Fabales
kudzu	Pueraria montana var. lobata (Willd.) Maesen & S. Almeida	Fabaceae (Leguminosae)	Fabales
tall buttercup	Ranunculus acris L.	Ranunculaceae	Ranunculales
fig buttercup	Ranunculus ficaria L.	Ranunculaceae	Ranunculales
creeping buttercup	Ranunculus repens L.	Ranunculaceae	Ranunculales
wild radish	Raphanus raphanistrum L.	Brassicaceae	Capparales
bridal broom	Retama monosperma (L.) Boiss.	Fabaceae (Leguminosae)	Fabales
European buckthorn	Rhamnus cathartica L.	Rhamnaceae	Rhamnales
buckthorn	Rhamnus spp. L.	Rhamnaceae	Rhamnales
rose myrtle	Rhodomyrtus tomentosa (Ait.) Hassk.	Myrtaceae	Myrtales
black locust	Robinia pseudoacacia L.	Fabaceae (Leguminosae)	Fabales
great yellowcress	Rorippa amphibia (L.) Bess.	Brassicaceae	Capparales
Austrian fieldcress	Rorippa austriaca (Crantz) Bess.	Brassicaceae	Capparales
yellow fieldcress	Rorippa sylvestris (L.) Bess.	Brassicaceae	Capparales
multiflora rose	Rosa multiflora Thunb. ex Murr.	Rosaceae	Rosales
roundleaf toothcup	Rotala rotundifolia (Buch.-Ham. ex Roxb.) Koehne	Lythraceae	Myrtales
itchgrass	Rottboellia cochinchinensis (Lour.) W.D. Clayton	Poaceae	Cyperales
Himalaya blackberry	Rubus armeniacus Focke	Rosaceae	Rosales
European blackberry	Rubus fruticosus L.	Rosaceae	Rosales
cutleaf blackberry	Rubus laciniatus Willd.	Rosaceae	Rosales
Molucca raspberry	Rubus moluccanus L.	Rosaceae	Rosales
wine raspberry	Rubus phoenicolasius Maxim.	Rosaceae	Rosales
red sorrel	Rumex acetosella L.	Polygonaceae	Polygonales
pale dock	Rumex altissimus Wood	Polygonaceae	Polygonales
curly dock	Rumex crispus L.	Polygonaceae	Polygonales
dock	Rumex spp. L.	Polygonaceae	Polygonales
wild sugarcane	Saccharum spontaneum L.	Poaceae	Cyperales
grassy arrowhead	Sagittaria graminea Michx.	Alismataceae	Alismatales
arrowhead	Sagittaria sagittifolia Linnaeus	Alismataceae	Alismatales
slender Russian thistle	Salsola collina Pallas	Chenopodiaceae	Caryophyllales
barbwire Russian-thistle	Salsola paulsenii Litv.	Chenopodiaceae	Caryophyllales
salsola	Salsola spp. L.	Chenopodiaceae	Caryophyllales
Russian-thistle	Salsola tragus L.	Chenopodiaceae	Caryophyllales
Mediterranean saltwort	Salsola vermiculata L.	Chenopodiaceae	Caryophyllales
Mediterranean sage	Salvia aethiopis L.	Lamiaceae	Lamiales
meadow sage	Salvia pratensis L.	Lamiaceae	Lamiales
Europe sage	Salvia sclarea L.	Lamiaceae	Lamiales
southern meadow sage	Salvia virgata Jacq.	Lamiaceae	Lamiales
eared salvinia	Salvinia auriculata Aublet	Salviniaceae	Hydropteridales
lobed salvinia	Salvinia biloba Raddi	Salviniaceae	Hydropteridales
Herzog salvinia	Salvinia herzogii de la Sota	Salviniaceae	Hydropteridales
giant salvinia	Salvinia molesta D. S. Mitchell	Salviniaceae	Hydropteridales
watermoss	Salvinia spp. Séguier	Salviniaceae	Hydropteridales
bouncingbet	Saponaria officinalis L.	Caryophyllaceae	Caryophyllales
beach naupaka	Scaevola sericea var. sericea Vahl	Goodeniaceae	Campanulales
Brazilian peppertree	Schinus terebinthifolius Raddi	Anacardiaceae	Sapindales
ricefield bulrush	Schoenoplectus mucronatus (L.) Palla	Cyperaceae	Cyperales
common goldenthistle	Scolymus hispanicus L.	Asteraceae	Asterales
goldenthistle	Scolymus spp. L.	Asteraceae	Asterales
cereal rye	Secale cereale L.	Poaceae	Cyperales
South African ragwort	Senecio inaequidens DC.	Asteraceae	Asterales
tansy ragwort	Senecio jacobaea L.	Asteraceae	Asterales
Madagascar ragwort	Senecio madagascariensis Poir.	Asteraceae	Asterales
oxford ragwort	Senecio squalidus L.	Asteraceae	Asterales
common groundsel	Senecio vulgaris L.	Asteraceae	Asterales
sicklepod	Senna obtusifolia (L.) Irwin & Barneby	Fabaceae (Leguminosae)	Fabales
hemp sesbania	Sesbania exaltata (Raf.) Rydb. ex A. W. Hill	Fabaceae (Leguminosae)	Fabales
red sesbania	Sesbania punicea (Cav.) Benth.	Fabaceae (Leguminosae)	Fabales
giant foxtail	Setaria faberi Herrm.	Poaceae	Cyperales
yellow foxtail	Setaria pumila (Poir.) Roemer & J.A. Schultes	Poaceae	Cyperales
cattail grass	Setaria pumila ssp. pallidefusca (Schumacher) B.K. Simon	Poaceae	Cyperales
burcucumber	Sicyos angulatus L.	Cucurbitaceae	Violales
bladder campion	Silene latifolia ssp. alba (Mill.) Greuter & Burdet	Caryophyllaceae	Caryophyllales
blessed milkthistle	Silybum marianum (L.) Gaertn.	Asteraceae	Asterales
milkthistle	Silybum spp. Adans	Asteraceae	Asterales
wild mustard	Sinapis arvensis L.	Brassicaceae	Capparales
wild mustard	Sinapis arvensis ssp. arvensis L.	Brassicaceae	Capparales
heaftleaf horsenettle	Solanum cardiophyllum Lindl.	Solanaceae	Solanales
horsenettle	Solanum carolinense L.	Solanaceae	Solanales
robust horsenettle	Solanum dimidiatum Raf.	Solanaceae	Solanales
bittersweet nightshade	Solanum dulcamara L.	Solanaceae	Solanales
silverleaf nightshade	Solanum elaeagnifolium Cavanaugh	Solanaceae	Solanales
orangeberry nightshade	Solanum lanceolatum Cav.	Solanaceae	Solanales
purple African nightshade	Solanum marginatum L. f.	Solanaceae	Solanales
black nightshade	Solanum nigrum L.	Solanaceae	Solanales
hairy nightshade	Solanum physalifolium Rusby	Solanaceae	Solanales
buffalobur	Solanum rostratum Dunal	Solanaceae	Solanales
wetland nightshade	Solanum tampicense Dunal	Solanaceae	Solanales
turkeyberry	Solanum torvum Sw.	Solanaceae	Solanales
tropical soda apple	Solanum viarum Dunal	Solanaceae	Solanales
lawn burweed	Soliva sessilis Ruiz & Pavón	Asteraceae	Asterales
perennial sowthistle	Sonchus arvensis L.	Asteraceae	Asterales
field sowthistle	Sonchus arvensis ssp. arvensis L.	Asteraceae	Asterales
sorghum-almum	Sorghum almum Parodi	Poaceae	Cyperales
sorghum	Sorghum bicolor (L.) Moench	Poaceae	Cyperales
johnsongrass	Sorghum halepense (L.) Pers.	Poaceae	Cyperales
sorghum	Sorghum spp. Moench	Poaceae	Cyperales
branched burreed	Sparganium erectum L.	Sparganiaceae	Typhales
smooth cordgrass	Spartina alterniflora Loisel.	Poaceae	Cyperales
common cordgrass	Spartina anglica C.E. Hubbard	Poaceae	Cyperales
denseflower cordgrass	Spartina densiflora Brongn.	Poaceae	Cyperales
saltmeadow cordgrass	Spartina patens (Ait.) Muhl.	Poaceae	Cyperales
Spanish broom	Spartium junceum L.	Fabaceae (Leguminosae)	Fabales
broadleaf buttonweed	Spermacoce alata Aubl.	Rubiaceae	Rubiales
swainsonpea	Sphaerophysa salsula (Pallas) DC.	Fabaceae (Leguminosae)	Fabales
Florida betony	Stachys floridana Shuttlw. ex Benth.	Lamiaceae	Lamiales
crab's-claw	Stratiotes aloides L.	Hydrocharitaceae	Hydrocharitales
witchweed	Striga asiatica (L.) Kuntze	Scrophulariaceae	Scrophulariales
cowpea witchweed	Striga gesnerioides (Willd.) Vatke	Scrophulariaceae	Scrophulariales
purple witchweed	Striga hermonthica (Del.) Benth	Scrophulariaceae	Scrophulariales
witchweed	Striga spp. Lour.	Scrophulariaceae	Scrophulariales
prickly comfrey	Symphytum asperum Lepechin	Boraginaceae	Lamiales
medusahead	Taeniatherum caput-medusae (L.) Nevski	Poaceae	Cyperales
wild marigold	Tagetes minuta L.	Asteraceae	Asterales
Athel tamarisk	Tamarix aphylla (L.) Karst.	Tamaricaceae	Violales
fivestamen tamarisk	Tamarix chinensis Lour.	Tamaricaceae	Violales
French tamarisk	Tamarix gallica L.	Tamaricaceae	Violales
smallflower tamarisk	Tamarix parviflora DC.	Tamaricaceae	Violales
saltcedar	Tamarix ramosissima Ledeb.	Tamaricaceae	Violales
tamarisk	Tamarix spp. L.	Tamaricaceae	Violales
common tansy	Tanacetum vulgare L.	Asteraceae	Asterales
field pennycress	Thlaspi arvense L.	Brassicaceae	Capparales
mezereon	Thymelaea passerina (L.) Coss. & Germ.	Thymelaeaceae	Myrtales
hedgeparsley	Torilis arvensis (Huds.) Link	Apiaceae	Apiales
Atlantic poison-oak	Toxicodendron pubescens P. Mill.	Anacardiaceae	Sapindales
eastern poison-ivy	Toxicodendron radicans (L.)Kuntze	Anacardiaceae	Sapindales
poison-sumac	Toxicodendron vernix (L.) Kuntze	Anacardiaceae	Sapindales
water-chestnut	Trapa natans L.	Trapaceae	Myrtales
water chestnut	Trapa spp. L.	Trapaceae	Myrtales
Chinese tallowtree	Triadica sebifera (L.) Small	Euphorbiaceae	Euphorbiales
Capetown grass	Tribolium obliterum (Hemsl.) Renvoize	Poaceae	Cyperales
puncturevine	Tribulus terrestris L.	Zygophyllaceae	Sapindales
coat buttons	Tridax procumbens L.	Asteraceae	Asterales
scentless false mayweed	Tripleurospermum perforatum (Merat) M. Lainz	Asteraceae	Asterales
coltsfoot	Tussilago farfara L.	Asteraceae	Asterales
gorse	Ulex europaeus L.	Fabaceae (Leguminosae)	Fabales
Siberian elm	Ulmus pumila L.	Ulmaceae	Urticales
liverseedgrass	Urochloa panicoides Beauvois	Poaceae	Cyperales
floating bladderwort	Utricularia inflata Walter	Lentibulariaceae	Scrophulariales
moth mullein	Verbascum blattaria L.	Scrophulariaceae	Scrophulariales
common mullein	Verbascum thapsus L.	Scrophulariaceae	Scrophulariales
bird vetch	Vicia cracca L.	Fabaceae (Leguminosae)	Fabales
European mistletoe	Viscum album L.	Viscaceae	Santalales
beach vitex	Vitex rotundifolia L. f.	Verbenaceae	Lamiales
grape	Vitis spp. L.	Vitaceae	Rhamnales
spiny cocklebur	Xanthium spinosum L.	Asteraceae	Asterales
cocklebur	Xanthium spp. L.	Asteraceae	Asterales
common cocklebur	Xanthium strumarium L.	Asteraceae	Asterales
Canada cockleburr	Xanthium strumarium var. canadense (Mill.) Torr. & A. Gray	Asteraceae	Asterales
rough cockleburr	Xanthium strumarium var. strumarium L.	Asteraceae	Asterales
Syrian beancaper	Zygophyllum fabago L.	Zygophyllaceae	Sapindales

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