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Invasive.org - Center for Invasive Species and Ecosystem Health

Invasive and Exotic Forbs and Herbs

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

796 Records


Subject Name Scientific Name Family Order
crenate broomrape Orobanche crenata Forsk. Orobanchaceae Scrophulariales
small broomrape Orobanche minor Smith Orobanchaceae Scrophulariales
nodding broomrape Orobanche cernua Loefl. [excluded] Orobanchaceae Scrophulariales
alligatorweed Alternanthera philoxeroides (Mart.) Griseb. Amaranthaceae Caryophyllales
giant salvinia Salvinia molesta D. S. Mitchell Salviniaceae Hydropteridales
Canada thistle Cirsium arvense (L.) Scop. Asteraceae Asterales
garlic mustard Alliaria petiolata (Bieb.) Cavara & Grande Brassicaceae Capparales
giant reed Arundo donax L. Poaceae Cyperales
musk thistle Carduus nutans L. Asteraceae Asterales
spotted knapweed Centaurea stoebe ssp. micranthos (Gugler) Hayek Asteraceae Asterales
purple crown-vetch Securigera varia (L.) Lassen Fabaceae (Leguminosae) Fabales
air-potato Dioscorea bulbifera L. Dioscoreaceae Dioscoreales
common teasel Dipsacus fullonum L. Dipsacaceae Dipsacales
ground ivy Glechoma hederacea L. Lamiaceae Lamiales
hydrilla Hydrilla verticillata (L. f.) Royle Hydrocharitaceae Hydrocharitales
ivyleaf morningglory Ipomoea hederacea Jacq. Convolvulaceae Solanales
shrubby lespedeza Lespedeza bicolor Turcz. Fabaceae (Leguminosae) Fabales
sericea lespedeza Lespedeza cuneata (Dum.-Cours.) G. Don Fabaceae (Leguminosae) Fabales
Uruguay waterprimrose Ludwigia uruguayensis Camb.) Hara Onagraceae Myrtales
purple loosestrife Lythrum salicaria L. Lythraceae Myrtales
white sweetclover Melilotus album Medikus Fabaceae (Leguminosae) Fabales
marsh dayflower Murdannia keisak (Hassk.) Hand.-Maz. Commelinaceae Commelinales
parrotfeather Myriophyllum aquaticum (Vell.) Verdc. Haloragaceae Haloragales
Eurasian water-milfoil Myriophyllum spicatum L. Haloragaceae Haloragales
brittleleaf naiad Najas minor All. Najadaceae Najadales
Japanese pachysandra Pachysandra terminalis Sieb. & Zucc. Buxaceae Euphorbiales
water lettuce Pistia stratiotes L. Araceae Arales
lesser celandine, fig buttercup Ficaria verna Huds. Ranunculaceae Ranunculales
common chickweed Stellaria pallida (Dumort.) Crépin Caryophyllaceae Caryophyllales
common mullein Verbascum thapsus L. Scrophulariaceae Scrophulariales
common periwinkle Vinca minor L. Apocynaceae Gentianales
cypress spurge Euphorbia cyparissias L. Euphorbiaceae Euphorbiales
bull thistle Cirsium vulgare (Savi) Ten. Asteraceae Asterales
Black dog-strangling vine, black swallowwort Vincetoxicum nigrum Kartesz & Gandhi Asclepiadaceae Gentianales
spiny plumeless thistle Carduus acanthoides L. Asteraceae Asterales
leafy spurge Euphorbia esula L. Euphorbiaceae Euphorbiales
tawny daylily Hemerocallis fulva (L.) L. Liliaceae Liliales
purple deadnettle Lamium purpureum L. Lamiaceae Lamiales
perilla mint Perilla frutescens (L.) Britton Lamiaceae Lamiales
Japanese knotweed Fallopia japonica (Houttuyn) Ronse-Decraene Polygonaceae Polygonales
sisal Agave sisalana Perrine Agavaceae Liliales
prairie sunflower Helianthus petiolaris Nutt. Asteraceae Asterales
yellow toadflax Linaria vulgaris P. Mill. Scrophulariaceae Scrophulariales
dandelion Taraxacum officinale G.H. Weber ex Wiggers Asteraceae Asterales
dog-strangling vine, European swallowwort Vincetoxicum rossicum (Kleopov) Barbarich Asclepiadaceae Gentianales
white swallowwort Vincetoxicum hirundinaria Medik. Asclepiadaceae Gentianales
water fern Salvinia minima Baker Salviniaceae Hydropteridales
turkeyberry Solanum torvum Sw. Solanaceae Solanales
silverleaf nightshade Solanum elaeagnifolium Cavanaugh Solanaceae Solanales
cressleaf groundsel Packera glabella (Poir) C. Jeffrey Asteraceae Asterales
field bindweed Convolvulus arvensis L. Convolvulaceae Solanales
meadow knapweed Centaurea moncktonii C. E. Britton[C. jacea X C. nigra] Asteraceae Asterales
Mediterranean sage Salvia aethiopis L. Lamiaceae Lamiales
poison-hemlock Conium maculatum L. Apiaceae Apiales
squarrose knapweed Centaurea virgata Lam. Asteraceae Asterales
Russian knapweed Rhaponticum repens (L.) Hidalgo Asteraceae Asterales
yellow starthistle Centaurea solstitialis L. Asteraceae Asterales
rush skeletonweed Chondrilla juncea L. Asteraceae Asterales
common St. Johnswort Hypericum perforatum L. Clusiaceae Theales
common crupina Crupina vulgaris Cass. Asteraceae Asterales
tansy ragwort Senecio jacobaea L. Asteraceae Asterales
slenderflower thistle Carduus tenuiflorus W. Curtis Asteraceae Asterales
mouseear hawkweed Hieracium pilosella L. Asteraceae Asterales
orange hawkweed Hieracium aurantiacum L. Asteraceae Asterales
meadow hawkweed Hieracium caespitosum Dumort. Asteraceae Asterales
sulfur cinquefoil Potentilla recta L. Rosaceae Rosales
Scotch thistle Onopordum acanthium L. Asteraceae Asterales
dalmatian toadflax Linaria dalmatica ssp. dalmatica (L.) P. Mill. Scrophulariaceae Scrophulariales
Italian plumeless thistle Carduus pycnocephalus L. Asteraceae Asterales
blessed milkthistle Silybum marianum (L.) Gaertn. Asteraceae Asterales
diffuse knapweed Centaurea diffusa Lam. Asteraceae Asterales
broomleaf toadflax Linaria genistifolia (L.) P. Mill. Scrophulariaceae Scrophulariales
Chinese yam Dioscorea polystachya Turcz. Dioscoreaceae Dioscoreales
big periwinkle Vinca major L. Apocynaceae Gentianales
goatsrue Galega officinalis L. Fabaceae (Leguminosae) Fabales
giant hogweed Heracleum mantegazzianum Sommier & Levier Apiaceae Apiales
monochoria Monochoria vaginalis (Burm. f.) K. Presl ex Kunth Pontederiaceae Liliales
arrowleaved monochoria Monochoria hastata (L.) Solms Pontederiaceae Liliales
arrowhead Sagittaria sagittifolia Linnaeus Alismataceae Alismatales
croftonweed Ageratina adenophora (Spreng.) King & H.E. Robins. Asteraceae Asterales
sessile joyweed Alternanthera sessilis (L.) R. Br. ex DC. Amaranthaceae Caryophyllales
broadleaf buttonweed Spermacoce alata Aubl. Rubiaceae Rubiales
miramar weed Hygrophila polysperma (Roxb.) T. Anders. Acanthaceae Scrophulariales
Mediterranean saltwort Salsola vermiculata L. Chenopodiaceae Caryophyllales
Benghal dayflower Commelina benghalensis L. Commelinaceae Commelinales
alfombrilla Drymaria arenarioides Humboldt & Bonpland Caryophyllaceae Caryophyllales
wild safflower Carthamus oxyacanthus M. Bieberstein Asteraceae Asterales
coat buttons Tridax procumbens L. Asteraceae Asterales
African mile-a-minute Mikania cordata (Burm. f.) B.L. Robins. Asteraceae Asterales
Chinese sprangletop Leptochloa chinensis (L.) Nees Poaceae Cyperales
three-cornered jack Emex australis Steinhall Polygonaceae Polygonales
spiny emex Emex spinosa (Linnaeus) Campdera Polygonaceae Polygonales
branched burreed Sparganium erectum L. Sparganiaceae Typhales
witchweed Striga asiatica (L.) Kuntze Scrophulariaceae Scrophulariales
purple witchweed Striga hermonthica (Del.) Benth Scrophulariaceae Scrophulariales
cowpea witchweed Striga gesnerioides (Willd.) Vatke Scrophulariaceae Scrophulariales
branched broomrape Orobanche ramosa L. Orobanchaceae Scrophulariales
teasel Dipsacus spp. L. Dipsacaceae Dipsacales
Dyer's woad Isatis tinctoria L. Brassicaceae Capparales
broomrape Orobanche spp. L. Orobanchaceae Scrophulariales
duck-lettuce Ottelia alismoides (Linnaeus) Pers. Hydrocharitaceae Hydrocharitales
lobed salvinia Salvinia biloba Raddi Salviniaceae Hydropteridales
eared salvinia Salvinia auriculata Aublet Salviniaceae Hydropteridales
Herzog salvinia Salvinia herzogii de la Sota Salviniaceae Hydropteridales
aeginetia Aeginetia spp. L. Orobanchaceae Scrophulariales
alectra Alectra spp. Thunb. Orobanchaceae Scrophulariales
onionweed Asphodelus fistulosus Linnaeus Liliaceae Liliales
limnophila Limnophila sessiliflora (Vahl) Blume Scrophulariaceae Scrophulariales
witchweed Striga spp. Lour. Scrophulariaceae Scrophulariales
velvetleaf Abutilon theophrasti Medik Malvaceae Malvales
pale biddy-biddy Acaena pallida (T. Kirk) J. W. Dawson Rosaceae Rosales
ye gu Aeginetia indica L. Orobanchaceae Scrophulariales
rough jointgrass Aeschynomene rudis Benth Fabaceae (Leguminosae) Fabales
northern jointvetch Aeschynomene virginica (L.) B.S.P Fabaceae (Leguminosae) Fabales
corn cockle Agrostemma githago L Caryophyllaceae Caryophyllales
creeping croftonweed Ageratina riparia (Regel) King & H.E. Robins. Asteraceae Asterales
wild onion Allium canadense L. Amaryllidaceae Asparagales
yerba de hierro Melasma melampyroides (Rich.) Pennell ex Britton & P.Wilson Orobanchaceae Scrophulariales
white garlic Allium neapolitanum Cirillo Amaryllidaceae Asparagales
panicled onion Allium paniculatum L. Amaryllidaceae Asparagales
wild garlic Allium vineale L. Amaryllidaceae Asparagales
wild garlic Allium vineale ssp. vineale L. Amaryllidaceae Asparagales
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
spiny amaranth Amaranthus spinosus L Amaranthaceae Caryophyllales
skeletonleaf bursage Ambrosia tomentosa Nutt. Asteraceae Asterales
giant ragweed Ambrosia trifida L. Asteraceae Asterales
slender amaranth Amaranthus viridis L Amaranthaceae Caryophyllales
scarlet pimpernel Lysimachia arvensis (L.) U. Manns & A. Anderb. Primulaceae Primulales
small bugloss Anchusa arvensis (L.) Bieb Boraginaceae Lamiales
corn chamomile Anthemis arvensis L. Asteraceae Asterales
stinking chamomile Anthemis cotula L Asteraceae Asterales
spurred anoda Anoda cristata (L.) Schlecht Malvaceae Malvales
oriental vessel fern Angiopteris evecta (J.R. Forst.) Hoffmann Marattiaceae Marattiales
common bugloss Anchusa officinalis L. Boraginaceae Lamiales
wild chervil Anthriscus sylvestris (L.) Hoffmann Apiaceae Apiales
Texas madeiravine Anredera vesicaria Lam.) Gaertn. F Basellaceae Caryophyllales
absinth wormwood Artemisia absinthium L. Asteraceae Asterales
capeweed Arctotheca calendula (L.) Levyns Asteraceae Asterales
common burdock Arctium minus Bernh. Asteraceae Asterales
mugwort Artemisia vulgaris L. Asteraceae Asterales
Sprenger's asparagus fern Asparagus aethiopicus L. Liliaceae Liliales
Chinese violet Asystasia gangetica (L.) T. Anders Acanthaceae Scrophulariales
balloon cottonbush Asclepias physocarpa (E. Mey.) Schlechter Asclepiadaceae Gentianales
Australian saltbush Atriplex semibaccata R. Br. Chenopodiaceae Caryophyllales
fivehook bassia Bassia hyssopifolia (Pallas) Kuntz Chenopodiaceae Caryophyllales
yellow rocket Barbarea vulgaris Ait. f. Brassicaceae Capparales
clubed begonia Begonia cucullata Willd Begoniaceae Violales
hoary alyssum Berteroa incana (L.) DC Brassicaceae Capparales
English daisy Bellis perennis L. Asteraceae Asterales
bellardia Bellardia trixago (L.) All Scrophulariaceae Scrophulariales
spanishneedles Bidens bipinnata L. Asteraceae Asterales
hairy beggarticks Bidens pilosa L. Asteraceae Asterales
white bryony Bryonia alba L. Cucurbitaceae Violales
Indian mustard Brassica juncea (L.) Czern Brassicaceae Capparales
black mustard Brassica nigra (L.) W.D.J. Koch Brassicaceae Capparales
birdsrape mustard Brassica rapa L. Brassicaceae Capparales
African mustard Brassica tournefortii Gouan Brassicaceae Capparales
corn gromwell Buglossoides arvensis (L.) I.M. Johnston Boraginaceae Lamiales
hare's ear Bupleurum rotundifolium L. Apiaceae Apiales
flowering-rush Butomus umbellatus L. Butomaceae Alismatales
shepherd's-purse Capsella bursa-pastoris (L.) Medik. Brassicaceae Capparales
Carolina fanwort Cabomba caroliniana A. Gray Cabombaceae Nymphaeales
common caraway Carum carvi L. Apiaceae Apiales
Carolina fanwort Cabomba caroliniana var. caroliniana A. Gray Cabombaceae Nymphaeales
Carolina fanwort Cabomba caroliniana var. pulcherrima Harper Cabombaceae Nymphaeales
orbicular whitetop Lepidium chalepense L. Brassicaceae Capparales
curly plumeless thistle Carduus crispus L. Asteraceae Asterales
hoary cress Lepidium draba (L.) Desv Brassicaceae Capparales
hottentot fig Carpobrotus edulis (L.) N.E. Br Aizoaceae Caryophyllales
hairy bittercress Cardamine hirsuta L Brassicaceae Capparales
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
smallseed falseflax Camelina microcarpa DC. Brassicaceae Capparales
nodding plumeless thistle Carduus nutans spp. leiophyllus (Petrovic) Stojanov & Stef Asteraceae Asterales
texasweed Caperonia palustris (L.) St.-Hil. Euphorbiaceae Euphorbiales
hairy whitetop Cardaria pubescens (C.A. Mey.) Brassicaceae Capparales
creeping bellflower Campanula rapunculoides L. Campanulaceae Campanulales
marijuana Cannabis sativa L Cannabaceae Urticales
purple starthistle Centaurea calcitrapa L. Asteraceae Asterales
cornflower Centaurea cyanus L. Asteraceae Asterales
common mouse-ear chickweed Cerastium fontanum Baumg. Caryophyllaceae Caryophyllales
big chickweed Cerastium fontanum ssp. vulgare (Hartman) Greuter & Burdet Caryophyllaceae Caryophyllales
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
alpine knapweed Centaurea nigrescens Willd Asteraceae Asterales
sulphur knapweed Centaurea sulphurea Willd Asteraceae Asterales
bur buttercup Ceratocephala testiculata (Crantz) Bess. Ranunculaceae Ranunculales
lambsquarters Chenopodium album L Chenopodiaceae Caryophyllales
mexicantea Dysphania ambrosioides (L.) Mosyakin & Clemants Chenopodiaceae Caryophyllales
spotted spurge Euphorbia maculata (L.) Small Euphorbiaceae Euphorbiales
nettleleaf goosefoot Chenopodium murale L. Chenopodiaceae Caryophyllales
giantseed goosefoot Chenopodium simplex (Torr.) Raf. Chenopodiaceae Caryophyllales
blue mustard Chorispora tenella (Pallas) DC. Brassicaceae Capparales
chicory Cichorium intybus L. Asteraceae Asterales
spotted waterhemlock Cicuta maculata L. Apiaceae Apiales
yellowspine thistle Cirsium ochrocentrum Gray Asteraceae Asterales
wavyleaf thistle Cirsium undulatum (Nutt.) Spreng Asteraceae Asterales
garden cosmos Cosmos bipinnatus Cav. Asteraceae Asterales
hairy fleabane Conyza bonariensis (L.) Cronquist Asteraceae Asterales
horseweed Conyza canadensis (L.) Cronq. Asteraceae Asterales
Asiatic dayflower Commelina communis L. Commelinaceae Commelinales
lesser swinecress Coronopus didymus (L.) Sm. Brassicaceae Capparales
coco yam, wild taro Colocasia esculenta (L.) Schott Araceae Arales
ivy gourd Coccinia grandis (L.) Voigt Cucurbitaceae Violales
lily of the valley Convallaria majalis L. Liliaceae Liliales
greater swinecress Coronopus squamatus (Forsk.) Aschers. Brassicaceae Capparales
sulphur cosmos Cosmos sulphureus Cav. Asteraceae Asterales
smooth hawksbeard Crepis capillaris (L.) Wallr Asteraceae Asterales
swamp stonecrop Crassula helmsii A. Berger Crassulaceae Rosales
showy rattlebox Crotalaria spectabilis Roth Fabaceae (Leguminosae) Fabales
narrowleaf hawksbeard Crepis tectorum L. Asteraceae Asterales
smallseed alfalfa dodder Cuscuta approximata Bab. Cuscutaceae Solanales
Vetch's dodder Cuscuta denticulata var. vetchii (Brandeg.) T. Beliz Cuscutaceae Solanales
clover dodder Cuscuta epithymum (L.) L. Cuscutaceae Solanales
Japanese dodder Cuscuta japonica Choisy Cuscutaceae Solanales
melon Cucumis melo L Cucurbitaceae Violales
bigfruit dodder Cuscuta megalocarpa Rydb Cuscutaceae Solanales
gooseberry gourd Cucumis myriocarpus E. Mey. ex Naud. Cucurbitaceae Violales
globe dodder Cuscuta potosina Schaffn Cuscutaceae Solanales
globe dodder Cuscuta potosina var. globifera Yunck. Cuscutaceae Solanales
giant dodder Cuscuta reflexa Roxb. Cuscutaceae Solanales
cardoon Cynara cardunculus L. Asteraceae Asterales
houndstongue Cynoglossum officinale L. Boraginaceae Lamiales
Queen Anne's lace, wild carrot Daucus carota L. Apiaceae Apiales
wild carrot Daucus carota ssp. carota L. Apiaceae Apiales
jimsonweed Datura stramonium L. Solanaceae Solanales
cape ivy Delairea odorata Lem Asteraceae Asterales
Japanese false spleenwort Deparia petersenii (Kunze) M. Kato Dryopteridaceae Polypodiales
flixweed Descurainia sophia (L.) Webb ex Prantl Brassicaceae Capparales
winged yam Dioscorea alata L. Dioscoreaceae Dioscoreales
Deptford pink Dianthus armeria L. Caryophyllaceae Caryophyllales
Fuller's teasel Dipsacus fullonum ssp. fullonum L. Dipsacaceae Dipsacales
Fuller's teasel Dipsacus fullonum ssp. sylvestris (Huds.) Clapham Dipsacaceae Dipsacales
cutleaf teasel Dipsacus laciniatus L. Dipsacaceae Dipsacales
foxglove Digitalis purpurea L. Scrophulariaceae Scrophulariales
Fuller's teasel Dipsacus sativus (L.) Honckeny Dipsacaceae Dipsacales
Virginia buttonweed Diodia virginiana L Rubiaceae Rubiales
spring whitlowgrass Draba verna L. Brassicaceae Capparales
wild cucumber Echinocystis lobata (Michx.) Torr. & Gray Cucurbitaceae Violales
eclipta Eclipta prostrata (L.) L. Asteraceae Asterales
common viper's bugloss Echium vulgare L. Boraginaceae Lamiales
hairy willowherb Epilobium hirsutum L. Onagraceae Myrtales
redstem filaree Erodium cicutarium (L.) L'Hér. ex Ait. Geraniaceae Geraniales
cutleaf burnweed Erechtites glomeratus (Desf. ex Poir.) DC. Asteraceae Asterales
Australian burnweed Erechtites minimus (Poir.) DC Asteraceae Asterales
California poppy Eschscholzia californica Cham Papaveraceae Papaverales
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
mulberryweed Fatoua villosa (Thunb.) Nakai Moraceae Urticales
fennel Foeniculum vulgare P. Mill. Apiaceae Apiales
Mauritius hemp Furcraea foetida (L.) Haw Agavaceae Liliales
scarlet gaura Gaura coccinea Nutt. ex Pursh Onagraceae Myrtales
Drummond's beeblossom Gaura drummondii (Spach) Torr. & Gray Onagraceae Myrtales
purple cudweed Gamochaeta purpurea (L.) Cabrera Asteraceae Asterales
hairy galinsoga Galinsoga quadriradiata Cav Asteraceae Asterales
wavyleaf gaura Gaura sinuata Nutt. ex Ser Onagraceae Myrtales
cutleaf geranium Geranium dissectum L. Geraniaceae Geraniales
babysbreath Gypsophila paniculata L Caryophyllaceae Caryophyllales
halogeton Halogeton glomeratus (Bieb.) C.A. Mey. Chenopodiaceae Caryophyllales
common sunflower Helianthus annuus L. Asteraceae Asterales
Texas blueweed Helianthus ciliaris DC. Asteraceae Asterales
white garland-lily Hedychium coronarium Koenig Zingiberaceae Zingiberales
cream garland-lily Hedychium flavescens Carey ex Roscoe Zingiberaceae Zingiberales
Kahila garland-lily Hedychium gardnerianum Shepard ex Ker-Gawl. Zingiberaceae Zingiberales
dames rocket Hesperis matronalis L. Brassicaceae Capparales
Canadian hawkweed Hieracium canadense Michx. Asteraceae Asterales
Venice mallow Hibiscus trionum L. Malvaceae Malvales
hogpotato Hoffmannseggia glauca (Ortega) Eifert Fabaceae (Leguminosae) Fabales
black henbane Hyoscyamus niger L. Solanaceae Solanales
hairy cat's ear Hypochaeris radicata L. Asteraceae Asterales
red morningglory Ipomoea coccinea L. Convolvulaceae Solanales
tievine Ipomoea cordatotriloba var. cordatotriloba Dennst. Convolvulaceae Solanales
pitted morningglory Ipomoea lacunosa L. Convolvulaceae Solanales
cypressvine morningglory Ipomoea quamoclit 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
yellow iris Iris pseudacorus L. Iridaceae Liliales
poverty sumpweed Iva axillaris Pursh Asteraceae Asterales
cathedral bells Kalanchoe pinnata (Lam.) Pers. Crassulaceae Rosales
Mexican fireweed Kochia scoparia (L.) A.J. Scott Chenopodiaceae Caryophyllales
Korean lespedeza Kummerowia stipulacea (Maxim.) Makino Fabaceae (Leguminosae) Fabales
common lespedeza Kummerowia striata (Thunb.) Schindl. Fabaceae (Leguminosae) Fabales
henbit Lamium amplexicaule L. Lamiaceae Lamiales
nipplewort Lapsana communis L. Asteraceae Asterales
everlasting peavine Lathyrus latifolius L. Fabaceae (Leguminosae) Fabales
prickly lettuce Lactuca serriola L. Asteraceae Asterales
blue lettuce Lactuca tatarica var. pulchella (Pursh) Breitung Asteraceae Asterales
motherwort Leonurus cardiaca L. Lamiaceae Lamiales
lepyrodiclis Lepyrodiclis holosteoides (C.A. Mey.) Fenzl ex Fisch. & C.A. Mey. Caryophyllaceae Caryophyllales
perennial pepperweed Lepidium latifolium L. Brassicaceae Capparales
clasping pepperweed Lepidium perfoliatum L. Brassicaceae Capparales
Virginia pepperweed Lepidium virginicum L. Brassicaceae Capparales
oxeye daisy Leucanthemum vulgare Lam. Asteraceae Asterales
Dalmatian toadflax Linaria dalmatica (L.) P. Mill. Scrophulariaceae Scrophulariales
birdsfoot trefoil Lotus corniculatus L. Fabaceae (Leguminosae) Fabales
creeping waterprimrose Ludwigia peploides (Kunth) Raven Onagraceae Myrtales
hyssop loosestrife Lythrum hyssopifolia L. Lythraceae Myrtales
creeping yellow loosestrife, creeping Jenney Lysimachia nummularia L. Primulaceae Primulales
European wand loosestrife Lythrum virgatum L. Lythraceae Myrtales
garden loosestrife Lysimachia vulgaris L. Primulaceae Primulales
pineapple-weed Matricaria discoidea DC. Asteraceae Asterales
alkali mallow Malvella leprosa (Ortega) Krapov. Malvaceae Malvales
common mallow Malva neglecta Wallr. Malvaceae Malvales
coast tarweed Madia sativa Molina Asteraceae Asterales
white horehound Marrubium vulgare L. Lamiaceae Lamiales
crystalline iceplant Mesembryanthemum crystallinum L. Aizoaceae Caryophyllales
black medic Medicago lupulina L. Fabaceae (Leguminosae) Fabales
yellow sweet-clover Melilotus officinalis (L.) Lam. Fabaceae (Leguminosae) Fabales
peppermint Mentha x piperita L. (pro sp.) Lamiaceae Lamiales
California burclover Medicago polymorpha L. Fabaceae (Leguminosae) Fabales
pennyroyal Mentha pulegium L. Lamiaceae Lamiales
spearmint Mentha spicata L. Lamiaceae Lamiales
wild four-o'clock Mirabilis nyctaginea (Michx.) MacM. Nyctaginaceae Caryophyllales
miniature beefsteakplant Mosla dianthera (Buch.-Ham. ex Roxb.) Maxim. Lamiaceae Lamiales
common grape hyacinth Muscari botryoides (L.) P. Mill. Liliaceae Liliales
starch grape hyacinth Muscari neglectum Guss. ex Ten. Liliaceae Liliales
true forget-me-not Myosotis scorpioides L. Boraginaceae Lamiales
catnip Nepeta cataria L. Lamiaceae Lamiales
narrow swordfern Nephrolepis cordifolia (L.) C. Presl Dryopteridaceae Polypodiales
Asian swordfern Nephrolepis brownii (Desv.) Hovenkamp & Miyam. Dryopteridaceae Polypodiales
perennial soybean Neonotonia wightii (Wight & Arn.) Fabaceae (Leguminosae) Fabales
apple-of-Peru Nicandra physalodes (L.) Gaertn. Solanaceae Solanales
Mexican waterlily Nymphaea mexicana Zucc. Nymphaeaceae Nymphaeales
cutleaf evening-primrose Oenothera laciniata Hill Onagraceae Myrtales
foxtail restharrow Ononis alopecuroides L. Fabaceae (Leguminosae) Fabales
bull cottonthistle Onopordum tauricum Willd. Asteraceae Asterales
desert broomrape Orobanche cooperi (Gray) Heller Orobanchaceae Scrophulariales
star-of-Bethlehem Ornithogalum umbellatum L. Liliaceae Liliales
yellow woodsorrel Oxalis stricta L. Oxalidaceae Geraniales
wild parsnip Pastinaca sativa L. Apiaceae Apiales
opium poppy Papaver somniferum L. Papaveraceae Papaverales
African rue Peganum harmala L. Zygophyllaceae Sapindales
common pokeweed Phytolacca americana L. Phytolaccaceae Caryophyllales
longleaf groundcherry Physalis longifolia var. longifolia Nutt. Solanaceae Solanales
smooth groundcherry Physalis longifolia var. subglabrata (Mack. & Bush) Cronquist Solanaceae Solanales
New Zealand flax Phormium tenax J.R. & G. Forst. Xanthorrhoeaceae Asparagales
chamber bitter Phyllanthus urinaria L. Euphorbiaceae Euphorbiales
starhair groundcherry Physalis viscosa L. Solanaceae Solanales
hawkweed oxtongue Picris hieracioides L. Asteraceae Asterales
bracted plantain Plantago aristata Michx. Plantaginaceae Plantaginales
Indian camphorweed Pluchea indica (L.) Less. Asteraceae Asterales
buckhorn plantain Plantago lanceolata L. Plantaginaceae Plantaginales
broadleaf plantain Plantago major L. Plantaginaceae Plantaginales
water knotweed Polygonum amphibium L. Polygonaceae Polygonales
longroot smartweed Polygonum amphibium var. emersum Michx. Polygonaceae Polygonales
Oriental lady's thumb Persicaria longiseta (Bruijn) Kitagawa Polygonaceae Polygonales
wild buckwheat Fallopia convolvulus L. Polygonaceae Polygonales
curly-leaved pondweed Potamogeton crispus L. Potamogetonaceae Najadales
pale smartweed Persicaria lapathifolia (L.) S.F. Gray Polygonaceae Polygonales
common purslane Portulaca oleracea L. Portulacaceae Caryophyllales
princess-feather Persicaria orientalis (L.) Spach Polygonaceae Polygonales
ladysthumb Persicaria maculosa S.F. Gray Polygonaceae Polygonales
cultivated knotweed Persicaria wallichii Greuter & Burdet Polygonaceae Polygonales
giant knotweed Fallopia sachalinensis (F. Schmidt) Ronse-Decraene Polygonaceae Polygonales
common selfheal Prunella vulgaris L. Lamiaceae Lamiales
ladder brake Pteris vittata L. Pteridaceae Polypodiales
tall buttercup Ranunculus acris L. Ranunculaceae Ranunculales
bulbous buttercup Ranunculus bulbosus L. Ranunculaceae Ranunculales
wild radish Raphanus raphanistrum L. Brassicaceae Capparales
creeping buttercup Ranunculus repens L. Ranunculaceae Ranunculales
radish Raphanus sativus L. Brassicaceae Capparales
Austrian fieldcress Rorippa austriaca (Crantz) Bess. Brassicaceae Capparales
yellow fieldcress Rorippa sylvestris (L.) Bess. Brassicaceae Capparales
red sorrel Rumex acetosella L. Polygonaceae Polygonales
pale dock Rumex altissimus Wood Polygonaceae Polygonales
Britton's wild petunia Ruellia simplex C. Wright Acanthaceae Scrophulariales
curly dock Rumex crispus L. Polygonaceae Polygonales
curly dock Rumex crispus ssp. crispus L. Polygonaceae Polygonales
broadleaf dock Rumex obtusifolius L. Polygonaceae Polygonales
slender Russian thistle Salsola collina Pallas Chenopodiaceae Caryophyllales
grassy arrowhead Sagittaria graminea Michx. Alismataceae Alismatales
iguanatail Sansevieria hyacinthoides (L.) Druce Liliaceae Liliales
Russian thistle Salsola kali L. Chenopodiaceae Caryophyllales
California arrowhead Sagittaria montevidensis Cham. & Schlecht. Alismataceae Alismatales
bouncingbet Saponaria officinalis L. Caryophyllaceae Caryophyllales
barbwire Russian-thistle Salsola paulsenii Litv. Chenopodiaceae Caryophyllales
Russian-thistle Salsola tragus L. Chenopodiaceae Caryophyllales
common goldenthistle Scolymus hispanicus L. Asteraceae Asterales
bigpod sesbania Sesbania herbacea (P. Mill.) McVaugh Fabaceae (Leguminosae) Fabales
Madagascar ragwort Senecio madagascariensis Poir. Asteraceae Asterales
sicklepod Senna obtusifolia (L.) Irwin & Barneby Fabaceae (Leguminosae) Fabales
coffee senna Senna occidentalis (L.) Link Fabaceae (Leguminosae) Fabales
oxford ragwort Senecio squalidus L. Asteraceae Asterales
common groundsel Senecio vulgaris L. Asteraceae Asterales
tumble mustard Sisymbrium altissimum L. Brassicaceae Capparales
burcucumber Sicyos angulatus L. Cucurbitaceae Violales
wild mustard Sinapis arvensis L. Brassicaceae Capparales
London rocket Sisymbrium irio L. Brassicaceae Capparales
bladder campion Silene latifolia ssp. alba (Mill.) Greuter & Burdet Caryophyllaceae Caryophyllales
nightflowering catchfly Silene noctiflora L. Caryophyllaceae Caryophyllales
hedge mustard Sisymbrium officinale (L.) Scop. Brassicaceae Capparales
bladder campion Silene vulgaris (Moench) Garcke Caryophyllaceae Caryophyllales
perennial sowthistle Sonchus arvensis L. Asteraceae Asterales
field sowthistle Sonchus arvensis ssp. arvensis L. Asteraceae Asterales
spiny sowthistle Sonchus asper (L.) Hill Asteraceae Asterales
heaftleaf horsenettle Solanum cardiophyllum Lindl. Solanaceae Solanales
horsenettle Solanum carolinense L. Solanaceae Solanales
robust horsenettle Solanum dimidiatum Raf. Solanaceae Solanales
twoleaf nightshade Solanum diphyllum L. Solanaceae Solanales
Jamaican nightshade Solanum jamaicense P. Mill. Solanaceae Solanales
black nightshade Solanum nigrum L. Solanaceae Solanales
annual sowthistle Sonchus oleraceus L. Asteraceae Asterales
hairy nightshade Solanum physalifolium Rusby Solanaceae Solanales
buffalobur Solanum rostratum Dunal Solanaceae Solanales
lawn burweed Soliva sessilis Ruiz & Pavón Asteraceae Asterales
cutleaf nightshade Solanum triflorum Nutt. Solanaceae Solanales
simplestem bur-reed Sparganium erectum ssp. stoloniferum (Graebn.) H. Hara Sparganiaceae Typhales
swainsonpea Sphaerophysa salsula (Pallas) DC. Fabaceae (Leguminosae) Fabales
Bay Biscayne creeping-oxeye Sphagneticola trilobata (L.C. Rich.) Pruski Asteraceae Asterales
water soldier Stratiotes aloides L. Hydrocharitaceae Hydrocharitales
denseflower witchweed Striga densiflora (Benth.) Benth. Scrophulariaceae Scrophulariales
Florida betony Stachys floridana Shuttlw. ex Benth. Lamiaceae Lamiales
prickly comfrey Symphytum asperum Lepechin Boraginaceae Lamiales
wild marigold Tagetes minuta L. Asteraceae Asterales
common tansy Tanacetum vulgare L. Asteraceae Asterales
incised halberd fern Tectaria incisa Cav. Dryopteridaceae Polypodiales
field pennycress Thlaspi arvense L. Brassicaceae Capparales
spreading hedgeparsley Torilis arvensis (Huds.) Link Apiaceae Apiales
spreading hedgeparsley Torilis arvensis ssp. arvensis (Huds.) Link Apiaceae Apiales
rabbitfoot clover Trifolium arvense L. Fabaceae (Leguminosae) Fabales
large hop clover Trifolium campestre Schreb. Fabaceae (Leguminosae) Fabales
western salsify Tragopogon dubius Scop. Asteraceae Asterales
white-flowered spiderwort Tradescantia fluminensis Vell. Commelinaceae Commelinales
false chamomile Tripleurospermum perforatum (Merat) M. Lainz Asteraceae Asterales
white clover Trifolium repens L. Fabaceae (Leguminosae) Fabales
Sacramento burrbark Triumfetta semitriloba Jacq. Tiliaceae Malvales
boatlily Tradescantia spathacea Sw. Commelinaceae Commelinales
coltsfoot Tussilago farfara L. Asteraceae Asterales
Caesarweed Urena lobata L. Malvaceae Malvales
common valerian Valeriana officinalis L. Valerianaceae Dipsacales
corn speedwell Veronica arvensis L. Scrophulariaceae Scrophulariales
twolobe speedwell Veronica biloba L. Scrophulariaceae Scrophulariales
moth mullein Verbascum blattaria L. Scrophulariaceae Scrophulariales
crownbeard Verbesina encelioides (Cav.) Benth. & Hook. f. ex Gray Asteraceae Asterales
common vetch Vicia sativa Linnaeus Fabaceae (Leguminosae) Fabales
sparrow vetch Vicia tetrasperma (L.) Schreb. Fabaceae (Leguminosae) Fabales
hairy vetch Vicia villosa Roth Fabaceae (Leguminosae) Fabales
spiny cocklebur Xanthium spinosum 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
Brazilian vervain Verbena incompta P. W. Michael Verbenaceae Lamiales
salsola Salsola spp. L. Chenopodiaceae Caryophyllales
clover Trifolium spp. L. Fabaceae (Leguminosae) Fabales
lettuce Lactuca sativa L. Asteraceae Asterales
alectra Alectra vogelii Benth. Orobanchaceae Scrophulariales
knapweeds Centaurea spp. L. Asteraceae Asterales
woodland strawberry Fragaria vesca L. Rosaceae Rosales
tall morningglory Ipomoea purpurea (L.) Roth Convolvulaceae Solanales
morningglory Ipomoea spp. L. Convolvulaceae Solanales
carpet bugle Ajuga reptans L. Lamiaceae Lamiales
onions Allium spp. L. Amaryllidaceae Asparagales
thymeleaf sandwort Arenaria serpyllifolia L. Caryophyllaceae Caryophyllales
rattlebox Crotalaria spp. L. Fabaceae (Leguminosae) Fabales
blessed thistle Cnicus benedictus L. Asteraceae Asterales
piedmont bedstraw Cruciata pedemontana (Bellardi) Ehrend. Rubiaceae Rubiales
Indian mock-strawberry Duchesnea indica (Andr.) Focke Rosaceae Rosales
willowleaf lettuce Lactuca saligna L. Asteraceae Asterales
Thunberg lespedeza Lespedeza thunbergii (DC.) Nakai Fabaceae (Leguminosae) Fabales
Mascarene Island leaf-flower Phyllanthus tenellus Roxb. Euphorbiaceae Euphorbiales
dock Rumex spp. L. Polygonaceae Polygonales
tall vervain Verbena bonariensis L. Verbenaceae Lamiales
ivyleaf speedwell Veronica hederifolia L. Scrophulariaceae Scrophulariales
cocklebur Xanthium spp. L. Asteraceae Asterales
basketplant Callisia fragrans (Lindl.) Woods Commelinaceae Commelinales
hairy indigo Indigofera hirsuta L. Fabaceae (Leguminosae) Fabales
arrowleaf elephant's ear Xanthosoma sagittifolium (L.) Schott Araceae Arales
cape tulip Homeria spp. Vent. Iridaceae Liliales
little mallow Malva parviflora L. Malvaceae Malvales
milkthistle Silybum spp. Adans Asteraceae Asterales
hollyhock Alcea rosea L. Malvaceae Malvales
Asiatic hawksbeard Youngia japonica (L.) DC. Asteraceae Asterales
goutweed Aegopodium podagraria L. Apiaceae Apiales
narrowleaf bittercress Cardamine impatiens L. Brassicaceae Capparales
carline thistle Carlina vulgaris L. Asteraceae Asterales
boreal chickweed Cerastium tomentosum L. Caryophyllaceae Caryophyllales
greater celandine Chelidonium majus L. Papaveraceae Papaverales
smooth bedstraw Cruciata laevipes Opiz Rubiaceae Rubiales
slender snakecotton Froelichia gracilis (Hook.) Moq. Amaranthaceae Caryophyllales
smooth bedstraw Galium mollugo L. Rubiaceae Rubiales
smallflower galinsoga Galinsoga parviflora Cav. Asteraceae Asterales
yellow bedstraw Galium verum L. Rubiaceae Rubiales
longstalk cranesbill Geranium columbinum L. Geraniaceae Geraniales
yellow daylily Hemerocallis lilioasphodelus L. Liliaceae Liliales
spotted deadnettle Lamium maculatum L. Lamiaceae Lamiales
creeping liriope Liriope spicata (Thunb.) Lour. Liliaceae Liliales
Chinese lobelia Lobelia chinensis Lour. Campanulaceae Campanulales
meadow campion Silene flos-cuculi (L.) Clairv. Caryophyllaceae Caryophyllales
giant chickweed Myosoton aquaticum (L.) Moench Caryophyllaceae Caryophyllales
Morison's spurry Spergula morisonii Boreau Caryophyllaceae Caryophyllales
rock dandelion Taraxacum laevigatum (Willd.) DC. Asteraceae Asterales
meadow salsify Tragopogon lamottei L. Asteraceae Asterales
hop clover Trifolium aureum Pollich Fabaceae (Leguminosae) Fabales
small hop clover Trifolium dubium Sibthorp Fabaceae (Leguminosae) Fabales
red clover Trifolium pratense L. Fabaceae (Leguminosae) Fabales
European speedwell Veronica beccabunga L. Scrophulariaceae Scrophulariales
thymeleaf speedwell Veronica serpyllifolia L. Scrophulariaceae Scrophulariales
monkeygrass Liriope muscari (Dcne.) Bailey Liliaceae Liliales
beach wormwood Artemisia stelleriana Bess. Asteraceae Asterales
heather Calluna vulgaris (L.) Hull Ericaceae Ericales
woodland forget-me-not Myosotis sylvatica Ehrh. ex Hoffmann Boraginaceae Lamiales
herb bennet Geum urbanum L. Rosaceae Rosales
sweetscented bedstraw Galium odoratum (L.) Scop. Rubiaceae Rubiales
common hempnettle Galeopsis tetrahit L. Lamiaceae Lamiales
helleborine Epipactis helleborine (L.) Crantz Orchidaceae Orchidales
elecampane Inula helenium L. Asteraceae Asterales
herb-robert Geranium robertianum L. Geraniaceae Geraniales
yellow devil hawkweed Hieracium x floribundum Wimmer & Grab. [caespitosum x lactucella] Asteraceae Asterales
kingdevil hawkweed Hieracium piloselloides Vill. Asteraceae Asterales
salvation jane Echium plantagineum L. Boraginaceae Lamiales
annual yellow sweetclover Melilotus indicus (L.) All. Fabaceae (Leguminosae) Fabales
meadow sage Salvia pratensis L. Lamiaceae Lamiales
Europe sage Salvia sclarea L. Lamiaceae Lamiales
spurge flax Thymelaea passerina (L.) Coss. & Germ. Thymelaeaceae Myrtales
Japanese hedge-parsley Torilis japonica (Houtt.) DC. Apiaceae Apiales
water speedwell Veronica anagallis-aquatica L. Scrophulariaceae Scrophulariales
thistle Cirsium spp. P. Mill. Asteraceae Asterales
marsh thistle Cirsium palustre (L.) Scop. Asteraceae Asterales
crested latesummer mint Elsholtzia ciliata (Thunb.) Hyl. Lamiaceae Lamiales
Thunberg's geranium Geranium thunbergii Sieb. & Zucc. ex Lindl. & Paxton Geraniaceae Geraniales
yellow hornpoppy Glaucium flavum Crantz Papaveraceae Papaverales
European frog-bit Hydrocharis morsus-ranae L. Hydrocharitaceae Hydrocharitales
Himalayan balsam Impatiens glandulifera Royle Balsaminaceae Geraniales
European water-clover Marsilea quadrifolia L. Marsileaceae Hydropteridales
twoleaf watermilfoil Myriophyllum heterophyllum Michx. Haloragaceae Haloragales
cup rosinweed Silphium perfoliatum L. Asteraceae Asterales
Japanese thistle Cirsium japonicum Fisch. ex DC. Asteraceae Asterales
Geraldton carnation weed Euphorbia terracina L. Euphorbiaceae Euphorbiales
Indian marshweed Limnophila indica (L.) Druce Scrophulariaceae Scrophulariales
Illyrian cottonthistle Onopordum illyricum L. Asteraceae Asterales
sensitive partridgepea Chamaecrista nictitans (L.) Moench Fabaceae (Leguminosae) Fabales
American burnweed Erechtites hieraciifolius (L.) Raf. ex DC. Asteraceae Asterales
tall lettuce Lactuca canadensis L. Asteraceae Asterales
tiny vetch Vicia hirsuta (L.) S.F. Gray Fabaceae (Leguminosae) Fabales
horse thistle Onopordum acaulon L. Asteraceae Asterales
wall lettuce Mycelis muralis (L.) Dumort. Asteraceae Asterales
common comfrey Symphytum officinale L. Boraginaceae Lamiales
bird vetch Vicia cracca L. Fabaceae (Leguminosae) Fabales
European sticktight Lappula squarrosa (Retz.) Dumort. Boraginaceae Lamiales
alsike clover Trifolium hybridum L. Fabaceae (Leguminosae) Fabales
moss vervain Glandularia pulchella (Sweet) Troncoso Verbenaceae Lamiales
Asiatic pennywort Centella asiatica (L.) Urban Apiaceae Apiales
field madder Sherardia arvensis L. Rubiaceae Rubiales
rough maidenhair fern Adiantum hispidulum Sw. Pteridaceae Polypodiales
delta maidenhair Adiantum raddianum K. Presl Pteridaceae Polypodiales
tropic ageratum Ageratum conyzoides L. Asteraceae Asterales
red ginger Alpinia purpurata (Vieill.) K. Schum. Zingiberaceae Zingiberales
Italian bugloss Anchusa azurea P. Mill. Boraginaceae Lamiales
wild celery Apium graveolens L. Apiaceae Apiales
great burdock Arctium lappa L. Asteraceae Asterales
Italian arum Arum italicum P. Mill. Araceae Arales
bamboo orchid Arundina graminifolia (D. Don) Hochr. Orchidaceae Orchidales
bloodflower milkweed Asclepias curassavica L. Asclepiadaceae Gentianales
peregrine saltbush Atriplex suberecta I. Verd. Chenopodiaceae Caryophyllales
scarlet spiderling Boerhavia coccinea P. mill. Nyctaginaceae Caryophyllales
Indian shot Canna indica L. Cannaceae Zingiberales
woodland bittercress Cardamine flexuosa With. Brassicaceae Capparales
field Indian paintbrush Castilleja arvensis Cham. & Schlecht Scrophulariaceae Scrophulariales
Madagascar periwinkle Catharanthus roseus (L.) G. Don Apocynaceae Gentianales
European centaury Centaurium erythraea Rafn Gentianaceae Gentianales
red valerian Centranthus ruber (L.) DC. Valerianaceae Dipsacales
garden spurge Chamaesyce hirta (L.) Millsp. Euphorbiaceae Euphorbiales
clammy goosefoot Dysphania pumilio (R. Br.) Mosyakin & Clemants Chenopodiaceae Caryophyllales
star-mustard Coincya monensis (L.) Greuter & Burdet Brassicaceae Capparales
American bugseed Corispermum americanum var. rydbergii Mosyakin Chenopodiaceae Caryophyllales
shiny bugseed Corispermum nitidum Kit. ex J.A. Schultes Chenopodiaceae Caryophyllales
canereed Costus speciosus (Koenig) Sm. Costaceae Zingiberales
southern brassbuttons Cotula australis (Sieber) Hook. f. Asteraceae Asterales
redflower ragleaf Crassocephalum crepidioides (Benth.) S. Moore Asteraceae Asterales
tarweed cuphea Cuphea carthagenensis (Jacq.) J.F. Macbr. Lythraceae Myrtales
little ironweed Cyanthillium cinereum (L.) H.E. Robins. Asteraceae Asterales
threeflower beggarweed Desmodium triflorum (L.) DC. Fabaceae (Leguminosae) Fabales
Grecian foxglove Digitalis lanata Ehrh. Scrophulariaceae Scrophulariales
heartleaf drymary Drymaria cordata (L.) Willd. ex J.A. Schultes Caryophyllaceae Caryophyllales
Cupid's-shaving-brush Emilia fosbergii D.H. Nicols. Asteraceae Asterales
lilac tasselflower Emilia sonchifolia var. sonchifolia (L.) DC. Asteraceae Asterales
Epidendrum ×obrienianum Epidendrum x obrienianum Rolfe [evectum × ibaguense] Orchidaceae Orchidales
aboriginal willowherb Epilobium billardierianum ssp. cinereum (A. Rich.) P.H. Raven & Engelhorn Onagraceae Myrtales
tropical burnweed Erechtites valerianifolius (Spreng.) DC. Asteraceae Asterales
father-and-child plant Euchiton japonicus (Thunb.) A. Anderb. Asteraceae Asterales
petty spurge Euphorbia peplus L. Euphorbiaceae Euphorbiales
queen-of-the-meadow Filipendula ulmaria (L.) Maxim. Rosaceae Rosales
cape bugle-lily Watsonia borbonica (Pourret) Goldblatt Iridaceae Liliales
seashore vervain Verbena montevidensis Spreng. Verbenaceae Lamiales
common salsify Tragopogon porrifolius L. Asteraceae Asterales
tree marigold Tithonia diversifolia (Hemsl.) Gray Asteraceae Asterales
downy maiden fern Christella dentata (Forssk.) Brownsey & Jermy Thelypteridaceae Polypodiales
beach strawberry Fragaria chiloensis (L.) P. Mill. Rosaceae Rosales
woodland strawberry Fragaria vesca ssp. vesca L. Rosaceae Rosales
nodeweed Synedrella nodiflora (L.) Gaertn. Asteraceae Asterales
Jamaica vervain Stachytarpheta jamaicensis (L.) Vahl Verbenaceae Lamiales
cayenne porterweed Stachytarpheta cayennensis (Rich.) Vahl Verbenaceae Lamiales
fieldnettle betony Stachys arvensis (L.) L. Lamiaceae Lamiales
Philippine ground orchid Spathoglottis plicata Blume Orchidaceae Orchidales
currant tomato Solanum pimpinellifolium Jusl. Solanaceae Solanales
oriental mustard Sisymbrium orientale L. Brassicaceae Capparales
English catchfly Silene gallica L. Caryophyllaceae Caryophyllales
common St. Paul's wort Sigesbeckia orientalis L. Asteraceae Asterales
woodland groundsel Senecio sylvaticus L. Asteraceae Asterales
mourningbride Scabiosa atropurpurea L. Dipsacaceae Dipsacales
Australasian geranium Geranium homeanum Turcz. Geraniaceae Geraniales
shining geranium Geranium lucidum L. Geraniaceae Geraniales
bluehead gilia Gilia capitata Sims Polemoniaceae Solanales
telegraph weed Heterotheca grandiflora Nutt. Asteraceae Asterales
Barbados lily Hippeastrum puniceum (Lam.) Kuntze Liliaceae Liliales
shortpod mustard Hirschfeldia incana (L.) Lagrèze-Fossat Brassicaceae Capparales
Mexican tulip poppy Hunnemannia fumariifolia Sweet Papaveraceae Papaverales
whorled pennywort Hydrocotyle verticillata Thunb. Apiaceae Apiales
chandelier plant Kalanchoe delagoensis Ecklon & Zeyh. Crassulaceae Rosales
blue lettuce Lactuca tatarica (L.) C.A. Mey. Asteraceae Asterales
yellow archangel Lamium galeobdolon (L.) Crantz Lamiaceae Lamiales
lesser hawkbit Leontodon saxatilis ssp. saxatilis L. Asteraceae Asterales
narrowleaf dock Rumex stenophyllus Ledeb. Polygonaceae Polygonales
amphibious yellowcress Rorippa amphibia (L.) Besser Brassicaceae Capparales
white mignonette Reseda alba L. Resedaceae Capparales
turnipweed Rapistrum rugosum (L.) All. Brassicaceae Capparales
hairy bird's-foot trefoil Lotus subbiflorus Lag. Fabaceae (Leguminosae) Fabales
waterpurslane Ludwigia palustris (L.) Ell. Onagraceae Myrtales
annual honesty Lunaria annua L. Brassicaceae Capparales
swordfern Macrothelypteris torresiana (Gaud.) Ching Thelypteridaceae Polypodiales
Malcolm stock Malcolmia africana (L.) Ait. f. Brassicaceae Capparales
Jersey cudweed Pseudognaphalium luteoalbum (L.) Hilliard & Burtt Asteraceae Asterales
dog's-tongue Pseudelephantopus spicatus (Juss. ex Aubl.) C.F. Baker Asteraceae Asterales
threelobe false mallow Malvastrum coromandelianum (L.) Garcke Malvaceae Malvales
lemon balm Melissa officinalis L. Lamiaceae Lamiales
apple-mint Mentha x villosa Huds. (pro sp.) [spicata × suaveolens] Lamiaceae Lamiales
slenderleaf iceplant Mesembryanthemum nodiflorum L. Aizoaceae Caryophyllales
shameplant Mimosa pudica var. unijuga (Duchass. & Walp.) Griseb. Fabaceae (Leguminosae) Fabales
common four-o'clock Mirabilis jalapa L. Nyctaginaceae Caryophyllales
fishtail swordfern Nephrolepis falcata (Cav.) C. Christens. Dryopteridaceae Polypodiales
dotted smartweed Persicaria punctata (Ell.) Small Polygonaceae Polygonales
silversheath knotweed Polygonum argyrocoleon Steud. Ex Kunze Polygonaceae Polygonales
fourleaf manyseed Polycarpon tetraphyllum (L.) L. Caryophyllaceae Caryophyllales
Mexican plantain Plantago australis Lam. Plantaginaceae Plantaginales
Dixie silverback fern Pityrogramma calomelanos (L.) Link Pteridaceae Polypodiales
redsepal evening-primrose Oenothera glazioviana Micheli Onagraceae Myrtales
nodding star-of-Bethlehem Ornithogalum nutans L. Liliaceae Liliales
pink woodsorrel Oxalis debilis var. corymbosa (DC.) Lourteig Oxalidaceae Geraniales
yellow glandweed Parentucellia viscosa (L.) Caruel Scrophulariaceae Scrophulariales
artilleryweed Pilea microphylla (L.) Liebm. Urticaceae Urticales
Virginia groundcherry Physalis virginiana var. virginiana Mill. Solanaceae Solanales
parsley Petroselinum crispum (P. Mill.) Nyman ex A.W. Hill Apiaceae Apiales
hairypink Petrorhagia dubia (Raf.) G. López & Romo Caryophyllaceae Caryophyllales
golden polypody Phlebodium aureum (L.) J. Sm. Polypodiaceae Polypodiales
monarch fern Phymatosorus scolopendria (Burm. f.) Copeland Polypodiaceae Polypodiales
Japanese chaff flower Achyranthes japonica (Miq.) Nakai Amaranthaceae Caryophyllales
alyceclover Alysicarpus vaginalis (L.) DC. Fabaceae (Leguminosae) Fabales
watercress Nasturtium officinale R. Brown Brassicaceae Capparales
dwarf waterclover Marsilea minuta L. Marsileaceae Hydropteridales
bagpod Sesbania vesicaria (Jacq.) Ell. Fabaceae (Leguminosae) Fabales
Browne's blechum Blechum pyramidatum (Lam.) Urban Acanthaceae Scrophulariales
primrose-willow Ludwigia peruviana (L.) Hara Onagraceae Myrtales
Hill mustard Bunias orientalis L. Brassicaceae Capparales
Kenilworth ivy Cymbalaria muralis P.G. Gaertn., B. Mey. & Scherb. Scrophulariaceae Scrophulariales
Bohemian knotweed Fallopia x bohemica (Chrtek & Chrtková) J.P.Bailey Polygonaceae Polygonales
plumeless thistle Carduus spp. L. Asteraceae Asterales
nightblooming cactus Hylocereus undatus (Haw.) Britt. & Rose Cactaceae Caryophyllales
widow's-thrill Kalanchoe spp. Adans. Crassulaceae Rosales
redhot poker Kniphofia uvaria (L.) Oken Liliaceae Liliales
squill Scilla siberica Haw. Liliaceae Liliales
largeflower Mexican clover Richardia grandiflora (Cham. & Schlecht.) J.A. & J.H. Schultes Rubiaceae Rubiales
large-flower primrose-willow Ludwigia grandiflora grandiflora (M. Micheli) Greuter & Burdet Onagraceae Myrtales
water primrose Ludwigia grandiflora ssp. hexapetala (Hook. & Arn.) Nesom & Kartesz Onagraceae Myrtales
smooth crotalaria Crotalaria pallida Aiton Fabaceae (Leguminosae) Fabales
Sacred lotus Nelumbo nucifera Gaertn. Nelumbonaceae Nymphaeales
southern meadow sage Salvia virgata Jacq. Lamiaceae Lamiales
thoroughwort pennycress Microthlaspi perfoliatum (L.) F.K. Mey. Brassicaceae Capparales
queen-devil hawkweed Hieracium glomeratum Froel. Asteraceae Asterales
smooth hawkweed Hieracium laevigatum Asteraceae Asterales
African asparagus fern Asparagus asparagoides (L.) Druce Liliaceae Liliales
European sea-rocket Cakile maritima Scop. Brassicaceae Capparales
sea fig Carpobrotus chilensis (Molina) N.E. Br. Aizoaceae Caryophyllales
crowndaisy Glebionis coronaria (L.) Tzvelev Asteraceae Asterales
brassbuttons Cotula coronopifolia L. Asteraceae Asterales
montbretia Crocosmia x crocosmiiflora (V. Lemoine) N.E. Br. [aurea × pottsii] Iridaceae Liliales
stinkwort Dittrichia graveolens (L.) W. Greuter Asteraceae Asterales
common hawkweed Hieracium lachenalii K.C. Gmel. Asteraceae Asterales
dotted duckmeat Landoltia punctata (G.F.W. Mey.) D.H. Les & D.J. Crawford Lemnaceae Arales
sweet alyssum Lobularia maritima (L.) Desv. Brassicaceae Capparales
European bugleweed Lycopus europaeus L. Lamiaceae Lamiales
broadleaf forget-me-not Myosotis latifolia Poir. Boraginaceae Lamiales
buttercup oxalis Oxalis pes-caprae L. Oxalidaceae Geraniales
bristly oxtongue Helminthotheca echioides (L.) Holub Asteraceae Asterales
oppositeleaf Russian thistle Salsola soda L. Chenopodiaceae Caryophyllales
rose clover Trifolium hirtum All. Fabaceae (Leguminosae) Fabales
bulbil bugle-lily Watsonia meriana (L.) P. Mill. Iridaceae Liliales
calla lily Zantedeschia aethiopica (L.) Spreng. Araceae Arales
hemp sesbania Sesbania exaltata (Raf.) Rydb. ex A. W. Hill Fabaceae (Leguminosae) Fabales
squarrose knapweed Centaurea virgata ssp. squarrosa Lam. Asteraceae Asterales
Hemizonia pungens (Hook. & Arn.) Torr. & Gray Asteraceae Asterales
garden baby's-breath Gypsophila scorzonerifolia Ser. Caryophyllaceae Caryophyllales
onerow yellowcress Nasturtium microphyllum Boenn. ex Rchb. Brassicaceae Capparales
longleaf groundcherry Physalis longifolia Nutt. Solanaceae Solanales
denseflower knotweed Persicaria glabra (Willd.) M. Gómez Polygonaceae Polygonales
common coleus Solenostemon scutellarioides (L.) Codd Lamiaceae Lamiales
plantains Plantago spp. L. Plantaginaceae Plantaginales
sowthistle Sonchus spp. L. Asteraceae Asterales
South African ragwort Senecio inaequidens DC. Asteraceae Asterales
sweetclover Melilotus spp. Mill. Fabaceae (Leguminosae) Fabales
South American skullcap Scutellaria racemosa Pers. Lamiaceae Lamiales
slender sowthistle Sonchus tenerrimus L. Asteraceae Asterales
Brazilian waterhyssop Bacopa egensis (Poepp.) Pennell Scrophulariaceae Scrophulariales
beckett's water trumpet Cryptocoryne beckettii Thwaites ex Trimen. Araceae Arales
cape blue waterlily Nymphaea capensis Thunb. Nymphaeaceae Nymphaeales
Sprenger's asparagus fern Asparagus densiflorus (Kunth) Jessop Liliaceae Liliales
bur chervil Anthriscus caucalis M. Bieb. Apiaceae Apiales
Mexican brassbuttons Cotula mexicana (DC.) Cabrera Asteraceae Asterales
smooth cat's ear Hypochaeris glabra L. Asteraceae Asterales
Asian netvein hollyfern Cyrtomium fortunei J. Sm. Dryopteridaceae Polypodiales
stonecrop Sedum spp. L. Crassulaceae Rosales
European stinging nettle Urtica dioica ssp. dioica L. Urticaceae Urticales
narrow-leaf cottonbush Gomphocarpus fruticosus (L.) W. T. Aiton Apocynaceae Gentianales
seaside goldenrod Solidago sempervirens L. Asteraceae Asterales
rose campion Lychnis coronaria (L.) Desr. Caryophyllaceae Caryophyllales
Matricaria perforata Mérat Asteraceae Asterales
English violet Viola odorata L. Violaceae Violales
alternateflower watermilfoil Myriophyllum alterniflorum DC. Haloragaceae Haloragales
Andean watermilfoil Myriophyllum quitense Kunth Haloragaceae Haloragales
bear's breech Acanthus mollis L. Acanthaceae Scrophulariales
big trefoil Lotus pedunculatus Cav. Fabaceae (Leguminosae) Fabales
changing forget-me-not Myosotis discolor Pers. Boraginaceae Lamiales
cinquefoil Potentilla spp. Rosaceae Rosales
common asparagus fern Asparagus setaceus (Kunth) Jessop Liliaceae Liliales
cottonthistle Onopordum spp. L. Asteraceae Asterales
cow vetch Vicia cracca ssp. tenuifolia (Roth) Gaudin Fabaceae (Leguminosae) Fabales
cuckoo flower Cardamine pratensis var. pratensis L. Brassicaceae Capparales
eastern watermilfoil Myriophyllum pinnatum (Walter) Britton, Sterns & Poggenb. Haloragaceae Haloragales
dovefoot geranium Geranium molle L. Geraniaceae Geraniales
evergreen bugloss Pentaglottis sempervirens (L.) Tausch ex L.H. Bailey Boraginaceae Lamiales
Farwell's watermilfoil Myriophyllum farwellii Morong Haloragaceae Haloragales
fig buttercup Ranunculus ficaria var. bulbifera Marsden-Jones Ranunculaceae Ranunculales
fishgrass Cabomba haynesii Wiersema Cabombaceae Nymphaeales
flat peavine Lathyrus sylvestris L. Fabaceae (Leguminosae) Fabales
floating primrose-willow Ludwigia peploides ssp. montevidensis (Spreng.) P.H. Raven Onagraceae Myrtales
forked fanwort Cabomba furcata Schult. & Schult. f. Cabombaceae Nymphaeales
goldenthistle Scolymus spp. L. Asteraceae Asterales
mossy stonecrop Sedum acre L. Crassulaceae Rosales
grassleaf spurge Euphorbia graminea Jacq. Euphorbiaceae Euphorbiales
Monnier waterhyssop Bacopa monnieri (L.) Pennell Scrophulariaceae Scrophulariales
Hispanic hyacinthoides Hyacinthoides hispanica (Mill.) Rothm. Liliaceae Liliales
Japanese netvein hollyfern Cyrtomium falcatum (L. f.) C. Presl Dryopteridaceae Polypodiales
Java waterdropwort Oenanthe javanica (Blume) DC. Apiaceae Apiales
joyweed Alternanthera spp. Forssk. Amaranthaceae Caryophyllales
tall hawkweed Hieracium praealtum Vill. ex Gochnat Asteraceae Asterales
lettuce Lactuca spp. Asteraceae Asterales
lax watermilfoil Myriophyllum laxum Shuttlw. ex Chapm. Haloragaceae Haloragales
loosestrife Lythrum spp. L. Lythraceae Myrtales
low watermilfoil Myriophyllum humile (Raf.) Morong Haloragaceae Haloragales
meadow knapweed Centaurea debeauxii Gren. & Godr. [excluded] Asteraceae Asterales
mustard Brassica spp. Brassicaceae Capparales
pale flax Linum bienne Mill. Linaceae Linales
polar hawkweed Hieracium atratum Fr. Asteraceae Asterales
purple mistress Moricandia arvensis (L.) DC. Brassicaceae Capparales
Russian water-milfoil Myriophyllum ussuriense (Regel) Maxim. Haloragaceae Haloragales
northern watermilfoil Myriophyllum sibiricum Kom. Haloragaceae Haloragales
slender false garlic Nothoscordum gracile (Aiton) Stearn Liliaceae Liliales
slender watermilfoil Myriophyllum tenellum Bigelow Haloragaceae Haloragales
smallflower hairy willowherb Epilobium parviflorum Schreb. Onagraceae Myrtales
spotted knapweed Centaurea stoebe L. Asteraceae Asterales
sticky sage Salvia glutinosa L. Lamiaceae Lamiales
subterranean clover Trifolium subterraneum L. Fabaceae (Leguminosae) Fabales
summer snowflake Leucojum aestivum L. Liliaceae Liliales
sweetscent Pluchea odorata (L.) Cass. Asteraceae Asterales
threeleaf arrowhead Sagittaria trifolia L. Alismataceae Alismatales
upright pepperweed Lepidium strictum (S. Watson) Rattan Brassicaceae Capparales
watermilfoil Myriophyllum spp. Haloragaceae Haloragales
West Indian spongeplant Limnobium laevigatum (Humb. & Bonpl. ex Willd.) Heine Hydrocharitaceae Hydrocharitales
western watermilfoil Myriophyllum hippuroides Nutt. ex Torr. & A. Gray Haloragaceae Haloragales
whorled watermilfoil Myriophyllum verticillatum L. Haloragaceae Haloragales
wild basil Clinopodium vulgare L. Lamiaceae Lamiales
wild bushbean Macroptilium lathyroides (L.) Urb. Fabaceae (Leguminosae) Fabales
yellowtuft Alyssum murale Waldst. & Kit. Brassicaceae Capparales
yellow archangel Lamiastrum galeobdolon (L.) Ehrend. & Polatschek Lamiaceae Lamiales
lesser hawkbit Leontodon taraxacoides ssp. taraxacoides L. Asteraceae Asterales
Acroptilon repens (L.) DC. Asteraceae Asterales
sea hibiscus Hibiscus tiliaceus L. Malvaceae Malvales
Polygonum perfoliatum L. Polygonaceae Polygonales
yellowtuft Alyssum corsicum Duby Brassicaceae Capparales
Eulophia ground orchid Eulophia graminea Lindl. Orchidaceae Orchidales
indigo Indigofera spicata Forssk. Fabaceae (Leguminosae) Fabales
hybrid hawkweed Hieracium x atramentarium (Naegeli & Peter) Zahn ex Engl. Asteraceae Asterales
dwarf eelgrass Zostera japonica Asch. & Graebn. Zosteraceae Najadales
Eurasian and northern watermilfoil hybrid Myriophyllum spicatum x sibiricum Haloragaceae Haloragales
daylily (exotic) Hemerocallis spp. L. Liliaceae Liliales
Centaurea jacea ssp. nigra (L.) Bonnier & Layens Asteraceae Asterales


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