| velvetleaf |
Abutilon theophrasti |
Malvaceae |
Malvales |
| slender copperleaf |
Acalypha gracilens |
Euphorbiaceae |
Euphorbiales |
| hophornbeam copperleaf |
Acalypha ostryifolia |
Euphorbiaceae |
Euphorbiales |
| Virginia copperleaf |
Acalypha virginica |
Euphorbiaceae |
Euphorbiales |
| Paraguay starbur |
Acanthospermum australe |
Asteraceae |
Asterales |
| bristly starbur |
Acanthospermum hispidum |
Asteraceae |
Asterales |
| common yarrow |
Achillea millefolium |
Asteraceae |
Asterales |
| sneezewort yarrow |
Achillea ptarmica |
Asteraceae |
Asterales |
| American sweetflag |
Acorus calamus |
Acoraceae |
Arales |
| black cohosh |
Actaea racemosa var. racemosa |
Ranunculaceae |
Ranunculales |
| red baneberry |
Actaea rubra |
Ranunculaceae |
Ranunculales |
| spring adonis |
Adonis vernalis |
Ranunculaceae |
Ranunculales |
| bishops goutweed |
Aegopodium podagraria |
Apiaceae |
Apiales |
| croftonweed |
Ageratina adenophora |
Asteraceae |
Asterales |
| white snakeroot |
Ageratina altissima |
Asteraceae |
Asterales |
| tropic ageratum |
Ageratum conyzoides |
Asteraceae |
Asterales |
| carpet bugle |
Ajuga reptans |
Lamiaceae |
Lamiales |
| hollyhock |
Alcea rosea |
Malvaceae |
Malvales |
| northern waterplantain |
Alisma plantago-aquatica |
Alismataceae |
Alismatales |
| garlic mustard |
Alliaria petiolata |
Brassicaceae |
Capparales |
| tapertip onion |
Allium acuminatum |
Liliaceae |
Liliales |
| wild onion |
Allium canadense |
Liliaceae |
Liliales |
| textile onion |
Allium textile |
Liliaceae |
Liliales |
| three-cornered leek |
Allium triquetrum |
Liliaceae |
Liliales |
| wild garlic |
Allium vineale |
Liliaceae |
Liliales |
| mat chaff-flower |
Alternanthera caracasana |
Amaranthaceae |
Caryophyllales |
| khakiweed |
Alternanthera pungens |
Amaranthaceae |
Caryophyllales |
| yellow alyssum |
Alyssum alyssoides |
Brassicaceae |
Capparales |
| tumble pigweed |
Amaranthus albus |
Amaranthaceae |
Caryophyllales |
| prostrate pigweed |
Amaranthus blitoides |
Amaranthaceae |
Caryophyllales |
| livid amaranth |
Amaranthus blitum |
Amaranthaceae |
Caryophyllales |
| low amaranth |
Amaranthus deflexus |
Amaranthaceae |
Caryophyllales |
| smooth pigweed |
Amaranthus hybridus |
Amaranthaceae |
Caryophyllales |
| Palmer amaranth |
Amaranthus palmeri |
Amaranthaceae |
Caryophyllales |
| Powell amaranth |
Amaranthus powellii |
Amaranthaceae |
Caryophyllales |
| redroot pigweed |
Amaranthus retroflexus |
Amaranthaceae |
Caryophyllales |
| common waterhemp |
Amaranthus rudis |
Amaranthaceae |
Caryophyllales |
| spiny amaranth |
Amaranthus spinosus |
Amaranthaceae |
Caryophyllales |
| tall waterhemp |
Amaranthus tuberculatus |
Amaranthaceae |
Caryophyllales |
| slender amaranth |
Amaranthus viridis |
Amaranthaceae |
Caryophyllales |
| annual bursage |
Ambrosia acanthicarpa |
Asteraceae |
Asterales |
| common ragweed |
Ambrosia artemisiifolia |
Asteraceae |
Asterales |
| annual ragweed |
Ambrosia artemisiifolia var. elatior |
Asteraceae |
Asterales |
| woollyleaf bursage |
Ambrosia grayi |
Asteraceae |
Asterales |
| western ragweed |
Ambrosia psilostachya |
Asteraceae |
Asterales |
| skeletonleaf bursage |
Ambrosia tomentosa |
Asteraceae |
Asterales |
| redstem |
Ammannia coccinea |
Lythraceae |
Myrtales |
| greater ammi |
Ammi majus |
Apiaceae |
Apiales |
| toothpick ammi |
Ammi visnaga |
Apiaceae |
Apiales |
| Douglas fiddleneck |
Amsinckia douglasiana |
Boraginaceae |
Lamiales |
| tarweed fiddleneck |
Amsinckia lycopsoides |
Boraginaceae |
Lamiales |
| common fiddleneck |
Amsinckia menziesii var. intermedia |
Boraginaceae |
Lamiales |
| western fiddleneck |
Amsinckia tessellata |
Boraginaceae |
Lamiales |
| pearly everlasting |
Anaphalis margaritacea |
Asteraceae |
Asterales |
| common bugloss |
Anchusa officinalis |
Boraginaceae |
Lamiales |
| spurred anoda |
Anoda cristata |
Malvaceae |
Malvales |
| plantainleaf pussytoes |
Antennaria plantaginifolia |
Asteraceae |
Asterales |
| corn chamomile |
Anthemis arvensis |
Asteraceae |
Asterales |
| stinking chamomile |
Anthemis cotula |
Asteraceae |
Asterales |
| yellow chamomile |
Anthemis tinctoria |
Asteraceae |
Asterales |
| bur chervil |
Anthriscus caucalis |
Apiaceae |
Apiales |
| chervil |
Anthriscus cerefolium |
Apiaceae |
Apiales |
| wild chervil |
Anthriscus sylvestris |
Apiaceae |
Apiales |
| snapdragon |
Antirrhinum majus |
Plantaginaceae |
Plantaginales |
| spreading dogbane |
Apocynum androsaemifolium |
Apocynaceae |
Gentianales |
| hemp dogbane |
Apocynum cannabinum |
Apocynaceae |
Gentianales |
| baby sun rose |
Aptenia cordifolia |
Aizoaceae |
Caryophyllales |
| European columbine |
Aquilegia vulgaris |
Ranunculaceae |
Ranunculales |
| mouse-ear cress |
Arabidopsis thaliana |
Brassicaceae |
Capparales |
| tower-mustard |
Arabis glabra |
Brassicaceae |
Capparales |
| great burdock |
Arctium lappa |
Asteraceae |
Asterales |
| common burdock |
Arctium minus |
Asteraceae |
Asterales |
| capeweed |
Arctotheca calendula |
Asteraceae |
Asterales |
| thymeleaf sandwort |
Arenaria serpyllifolia |
Caryophyllaceae |
Caryophyllales |
| Mexican pricklepoppy |
Argemone mexicana |
Papaveraceae |
Papaverales |
| annual pricklepoppy |
Argemone polyanthemos |
Papaveraceae |
Papaverales |
| silverweed cinquefoil |
Argentina anserina |
Rosaceae |
Rosales |
| annual wormwood |
Artemisia annua |
Asteraceae |
Asterales |
| biennial wormwood |
Artemisia biennis |
Asteraceae |
Asterales |
| common sagewort |
Artemisia campestris |
Asteraceae |
Asterales |
| California mugwort |
Artemisia douglasiana |
Asteraceae |
Asterales |
| mugwort |
Artemisia vulgaris |
Asteraceae |
Asterales |
| bloodflower milkweed |
Asclepias curassavica |
Asclepiadaceae |
Gentianales |
| woollypod milkweed |
Asclepias eriocarpa |
Asclepiadaceae |
Gentianales |
| Mexican whorled milkweed |
Asclepias fascicularis |
Asclepiadaceae |
Gentianales |
| swamp milkweed |
Asclepias incarnata |
Asclepiadaceae |
Gentianales |
| purple milkweed |
Asclepias purpurascens |
Asclepiadaceae |
Gentianales |
| showy milkweed |
Asclepias speciosa |
Asclepiadaceae |
Gentianales |
| western whorled milkweed |
Asclepias subverticillata |
Asclepiadaceae |
Gentianales |
| common milkweed |
Asclepias syriaca |
Asclepiadaceae |
Gentianales |
| butterfly milkweed |
Asclepias tuberosa |
Asclepiadaceae |
Gentianales |
| eastern whorled milkweed |
Asclepias verticillata |
Asclepiadaceae |
Gentianales |
| green milkweed |
Asclepias viridiflora |
Asclepiadaceae |
Gentianales |
| catchweed |
Asperugo procumbens |
Boraginaceae |
Lamiales |
| onionweed |
Asphodelus fistulosus |
Liliaceae |
Liliales |
| twogrooved milkvetch |
Astragalus bisulcatus |
Fabaceae (Leguminosae) |
Fabales |
| timber milkvetch |
Astragalus miser |
Fabaceae (Leguminosae) |
Fabales |
| garden orach |
Atriplex hortensis |
Chenopodiaceae |
Caryophyllales |
| triangle orach |
Atriplex prostrata |
Chenopodiaceae |
Caryophyllales |
| red orach |
Atriplex rosea |
Chenopodiaceae |
Caryophyllales |
| Carolina mosquitofern |
Azolla caroliniana |
Azollaceae |
Hydropteridales |
| Pacific mosquitofern |
Azolla filiculoides |
Azollaceae |
Hydropteridales |
| Monnier waterhyssop |
Bacopa monnieri |
Scrophulariaceae |
Scrophulariales |
| American yellow rocket |
Barbarea orthoceras |
Brassicaceae |
Capparales |
| early wintercress |
Barbarea verna |
Brassicaceae |
Capparales |
| yellow rocket |
Barbarea vulgaris |
Brassicaceae |
Capparales |
| bellardia |
Bellardia trixago |
Scrophulariaceae |
Scrophulariales |
| English daisy |
Bellis perennis |
Asteraceae |
Asterales |
| hoary alyssum |
Berteroa incana |
Brassicaceae |
Capparales |
| bearded beggarticks |
Bidens aristosa |
Asteraceae |
Asterales |
| spanishneedles |
Bidens bipinnata |
Asteraceae |
Asterales |
| nodding beggarticks |
Bidens cernua |
Asteraceae |
Asterales |
| devils beggarticks |
Bidens frondosa |
Asteraceae |
Asterales |
| burmarigold |
Bidens laevis |
Asteraceae |
Asterales |
| hairy beggarticks |
Bidens pilosa |
Asteraceae |
Asterales |
| bur beggarticks |
Bidens tripartita |
Asteraceae |
Asterales |
| tall beggarticks |
Bidens vulgata |
Asteraceae |
Asterales |
| scarlet spiderling |
Boerhavia coccinea |
Nyctaginaceae |
Caryophyllales |
| common borage |
Borago officinalis |
Boraginaceae |
Lamiales |
| hoary bowlesia |
Bowlesia incana |
Apiaceae |
Apiales |
| watershield |
Brasenia schreberi |
Cabombaceae |
Nymphaeales |
| Indian mustard |
Brassica juncea |
Brassicaceae |
Capparales |
| rapeseed |
Brassica napus |
Brassicaceae |
Capparales |
| black mustard |
Brassica nigra |
Brassicaceae |
Capparales |
| African mustard |
Brassica tournefortii |
Brassicaceae |
Capparales |
| corn gromwell |
Buglossoides arvensis |
Boraginaceae |
Lamiales |
| crested bunias |
Bunias erucago |
Brassicaceae |
Capparales |
| Hill mustard |
Bunias orientalis |
Brassicaceae |
Capparales |
| flowering rush |
Butomus umbellatus |
Butomaceae |
Alismatales |
| fanwort |
Cabomba caroliniana |
Cabombaceae |
Nymphaeales |
| American searocket |
Cakile edentula |
Brassicaceae |
Capparales |
| redmaids |
Calandrinia ciliata |
Portulacaceae |
Caryophyllales |
| field marigold |
Calendula arvensis |
Asteraceae |
Asterales |
| purple poppymallow |
Callirhoe involucrata |
Malvaceae |
Malvales |
| sprawling horseweed |
Calyptocarpus vialis |
Asteraceae |
Asterales |
| smallseed falseflax |
Camelina microcarpa |
Brassicaceae |
Capparales |
| clustered bellflower |
Campanula glomerata |
Campanulaceae |
Campanulales |
| creeping bellflower |
Campanula rapunculoides |
Campanulaceae |
Campanulales |
| harebell |
Campanula rotundifolia |
Campanulaceae |
Campanulales |
| American bellflower |
Campanulastrum americanum |
Campanulaceae |
Campanulales |
| marijuana |
Cannabis sativa |
Cannabaceae |
Urticales |
| pale corydalis |
Capnoides sempervirens |
Fumariaceae |
Papaverales |
| shepherd's-purse |
Capsella bursa-pastoris |
Brassicaceae |
Capparales |
| hairy bittercress |
Cardamine hirsuta |
Brassicaceae |
Capparales |
| little western bittercress |
Cardamine oligosperma |
Brassicaceae |
Capparales |
| Pennsylvania bittercress |
Cardamine pensylvanica |
Brassicaceae |
Capparales |
| cuckoo bittercress |
Cardamine pratensis |
Brassicaceae |
Capparales |
| hairy whitetop |
Cardaria pubescens |
Brassicaceae |
Capparales |
| spiny plumeless thistle |
Carduus acanthoides |
Asteraceae |
Asterales |
| musk thistle |
Carduus nutans |
Asteraceae |
Asterales |
| Italian plumeless thistle |
Carduus pycnocephalus |
Asteraceae |
Asterales |
| slenderflower thistle |
Carduus tenuiflorus |
Asteraceae |
Asterales |
| sea fig |
Carpobrotus chilensis |
Aizoaceae |
Caryophyllales |
| woolly distaff thistle |
Carthamus lanatus |
Asteraceae |
Asterales |
| wild safflower |
Carthamus oxyacanthus |
Asteraceae |
Asterales |
| common caraway |
Carum carvi |
Apiaceae |
Apiales |
| purple starthistle |
Centaurea calcitrapa |
Asteraceae |
Asterales |
| cornflower |
Centaurea cyanus |
Asteraceae |
Asterales |
| diffuse knapweed |
Centaurea diffusa |
Asteraceae |
Asterales |
| North African knapweed |
Centaurea diluta |
Asteraceae |
Asterales |
| brown knapweed |
Centaurea jacea |
Asteraceae |
Asterales |
| Malta starthistle |
Centaurea melitensis |
Asteraceae |
Asterales |
| perennial cornflower |
Centaurea montana |
Asteraceae |
Asterales |
| black knapweed |
Centaurea nigra |
Asteraceae |
Asterales |
| alpine knapweed |
Centaurea nigrescens |
Asteraceae |
Asterales |
| yellow starthistle |
Centaurea solstitialis |
Asteraceae |
Asterales |
| spotted knapweed |
Centaurea stoebe ssp. micranthos |
Asteraceae |
Asterales |
| sulphur knapweed |
Centaurea sulphurea |
Asteraceae |
Asterales |
| Asiatic pennywort |
Centella asiatica |
Apiaceae |
Apiales |
| erect centella |
Centella erecta |
Apiaceae |
Apiales |
| red valerian |
Centranthus ruber |
Valerianaceae |
Dipsacales |
| common tarweed |
Centromadia pungens ssp. pungens |
Asteraceae |
Asterales |
| field chickweed |
Cerastium arvense |
Caryophyllaceae |
Caryophyllales |
| common mouse-ear chickweed |
Cerastium fontanum |
Caryophyllaceae |
Caryophyllales |
| big chickweed |
Cerastium fontanum ssp. vulgare |
Caryophyllaceae |
Caryophyllales |
| sticky chickweed |
Cerastium glomeratum |
Caryophyllaceae |
Caryophyllales |
| bur buttercup |
Ceratocephala testiculata |
Ranunculaceae |
Ranunculales |
| coontail |
Ceratophyllum demersum |
Parmeliaceae |
Lecanorales |
| partridgepea |
Chamaecrista fasciculata |
Fabaceae (Leguminosae) |
Fabales |
| sensitive partridgepea |
Chamaecrista nictitans |
Fabaceae (Leguminosae) |
Fabales |
| ridgeseed spurge |
Chamaesyce glyptosperma |
Euphorbiaceae |
Euphorbiales |
| garden spurge |
Chamaesyce hirta |
Euphorbiaceae |
Euphorbiales |
| prostrate spurge |
Chamaesyce humistrata |
Euphorbiaceae |
Euphorbiales |
| nodding spurge |
Chamaesyce nutans |
Euphorbiaceae |
Euphorbiales |
| ground spurge |
Chamaesyce prostrata |
Euphorbiaceae |
Euphorbiales |
| fireweed |
Chamerion angustifolium |
Onagraceae |
Myrtales |
| greater celandine |
Chelidonium majus |
Papaveraceae |
Papaverales |
| lambsquarters |
Chenopodium album |
Chenopodiaceae |
Caryophyllales |
| Missouri lambsquarters |
Chenopodium album var. missouriense |
Chenopodiaceae |
Caryophyllales |
| perennial goosefoot |
Chenopodium bonus-henricus |
Chenopodiaceae |
Caryophyllales |
| Jerusalem-oak goosefoot |
Chenopodium botrys |
Chenopodiaceae |
Caryophyllales |
| blite goosefoot |
Chenopodium capitatum |
Chenopodiaceae |
Caryophyllales |
| figleaved goosefoot |
Chenopodium ficifolium |
Chenopodiaceae |
Caryophyllales |
| cutleaf goosefoot |
Chenopodium multifidum |
Chenopodiaceae |
Caryophyllales |
| nettleleaf goosefoot |
Chenopodium murale |
Chenopodiaceae |
Caryophyllales |
| giantseed goosefoot |
Chenopodium simplex |
Chenopodiaceae |
Caryophyllales |
| rush skeletonweed |
Chondrilla juncea |
Asteraceae |
Asterales |
| blue mustard |
Chorispora tenella |
Brassicaceae |
Capparales |
| chicory |
Cichorium intybus |
Asteraceae |
Asterales |
| bulbous waterhemlock |
Cicuta bulbifera |
Apiaceae |
Apiales |
| western waterhemlock |
Cicuta douglasii |
Apiaceae |
Apiales |
| spotted waterhemlock |
Cicuta maculata |
Apiaceae |
Apiales |
| Canada thistle |
Cirsium arvense |
Asteraceae |
Asterales |
| field thistle |
Cirsium discolor |
Asteraceae |
Asterales |
| Indian thistle |
Cirsium edule |
Asteraceae |
Asterales |
| yellow thistle |
Cirsium horridulum |
Asteraceae |
Asterales |
| western thistle |
Cirsium occidentale |
Asteraceae |
Asterales |
| yellowspine thistle |
Cirsium ochrocentrum |
Asteraceae |
Asterales |
| meadow thistle |
Cirsium scariosum |
Asteraceae |
Asterales |
| wavyleaf thistle |
Cirsium undulatum |
Asteraceae |
Asterales |
| bull thistle |
Cirsium vulgare |
Asteraceae |
Asterales |
| broadleaf spring-beauty |
Claytonia caroliniana |
Portulacaceae |
Caryophyllales |
| miner's lettuce |
Claytonia perfoliata |
Portulacaceae |
Caryophyllales |
| narrowleaf spring-beauty |
Claytonia virginica |
Portulacaceae |
Caryophyllales |
| spiderwisp |
Cleome gynandra |
Capparaceae |
Capparales |
| yellow spiderflower |
Cleome lutea |
Capparaceae |
Capparales |
| Rocky Mountain beeplant |
Cleome serrulata |
Capparaceae |
Capparales |
| bluebead-lily |
Clintonia borealis |
Liliaceae |
Liliales |
| blessed thistle |
Cnicus benedictus |
Asteraceae |
Asterales |
| bullnettle |
Cnidoscolus stimulosus |
Euphorbiaceae |
Euphorbiales |
| Texas bullnettle |
Cnidoscolus texanus |
Euphorbiaceae |
Euphorbiales |
| coco yam, wild taro |
Colocasia esculenta |
Araceae |
Arales |
| Benghal dayflower |
Commelina benghalensis |
Commelinaceae |
Commelinales |
| Asiatic dayflower |
Commelina communis |
Commelinaceae |
Commelinales |
| spreading dayflower |
Commelina diffusa |
Commelinaceae |
Commelinales |
| sweetfern |
Comptonia peregrina |
Myricaceae |
Myricales |
| poison-hemlock |
Conium maculatum |
Apiaceae |
Apiales |
| blue mistflower |
Conoclinium coelestinum |
Asteraceae |
Asterales |
| European lily of the valley |
Convallaria majalis |
Liliaceae |
Liliales |
| hairy fleabane |
Conyza bonariensis |
Asteraceae |
Asterales |
| horseweed |
Conyza canadensis |
Asteraceae |
Asterales |
| tall fleabane |
Conyza floribunda |
Asteraceae |
Asterales |
| canker-root |
Coptis trifolia |
Ranunculaceae |
Ranunculales |
| lanceleaf tickseed |
Coreopsis lanceolata |
Asteraceae |
Asterales |
| plains coreopsis |
Coreopsis tinctoria |
Asteraceae |
Asterales |
| whorled coreopsis |
Coreopsis verticillata |
Asteraceae |
Asterales |
| lesser swinecress |
Coronopus didymus |
Brassicaceae |
Capparales |
| greater swinecress |
Coronopus squamatus |
Brassicaceae |
Capparales |
| southern brassbuttons |
Cotula australis |
Asteraceae |
Asterales |
| brassbuttons |
Cotula coronopifolia |
Asteraceae |
Asterales |
| Mexican brassbuttons |
Cotula mexicana |
Asteraceae |
Asterales |
| smooth hawksbeard |
Crepis capillaris |
Asteraceae |
Asterales |
| bristly hawksbeard |
Crepis setosa |
Asteraceae |
Asterales |
| narrowleaf hawksbeard |
Crepis tectorum |
Asteraceae |
Asterales |
| alkaliweed |
Cressa truxillensis |
Convolvulaceae |
Solanales |
| seven sisters swamplily |
Crinum americanum |
Liliaceae |
Liliales |
| wedge-leaf rattlebox |
Crotalaria retusa |
Fabaceae (Leguminosae) |
Fabales |
| showy rattlebox |
Crotalaria spectabilis |
Fabaceae (Leguminosae) |
Fabales |
| woolly croton |
Croton capitatus |
Euphorbiaceae |
Euphorbiales |
| tropic croton |
Croton glandulosus var. septentrionalis |
Euphorbiaceae |
Euphorbiales |
| Turkey mullein |
Croton setiger |
Euphorbiaceae |
Euphorbiales |
| common crupina |
Crupina vulgaris |
Asteraceae |
Asterales |
| tarweed cuphea |
Cuphea carthagenensis |
Lythraceae |
Myrtales |
| giant sumpweed |
Cyclachaena xanthifolia |
Asteraceae |
Asterales |
| wild celery |
Cyclospermum leptophyllum |
Apiaceae |
Apiales |
| Kenilworth ivy |
Cymbalaria muralis |
Scrophulariaceae |
Scrophulariales |
| cardoon |
Cynara cardunculus |
Asteraceae |
Asterales |
| houndstongue |
Cynoglossum officinale |
Boraginaceae |
Lamiales |
| globe sedge |
Cyperus croceus |
Cyperaceae |
Cyperales |
| Chinese thorn-apple |
Datura quercifolia |
Solanaceae |
Solanales |
| jimsonweed |
Datura stramonium |
Solanaceae |
Solanales |
| sacred thorn-apple |
Datura wrightii |
Solanaceae |
Solanales |
| Queen Anne's lace, wild carrot |
Daucus carota |
Apiaceae |
Apiales |
| southwestern carrot |
Daucus pusillus |
Apiaceae |
Apiales |
| Kellogg's tarweed |
Deinandra kelloggii |
Asteraceae |
Asterales |
| cape ivy |
Delairea odorata |
Asteraceae |
Asterales |
| tall larkspur |
Delphinium barbeyi |
Ranunculaceae |
Ranunculales |
| Carolina larkspur |
Delphinium carolinianum |
Ranunculaceae |
Ranunculales |
| low larkspur |
Delphinium nuttallianum |
Ranunculaceae |
Ranunculales |
| dwarf larkspur |
Delphinium tricorne |
Ranunculaceae |
Ranunculales |
| duncecap larkspur |
Delphinium x occidentale |
Ranunculaceae |
Ranunculales |
| hay-scented fern |
Dennstaedtia punctilobula |
Dennstaedtiaceae |
Polypodiales |
| mountain tansymustard |
Descurainia incana |
Brassicaceae |
Capparales |
| mountain tansymustard |
Descurainia incana ssp. incisa |
Brassicaceae |
Capparales |
| pinnate tansymustard |
Descurainia pinnata |
Brassicaceae |
Capparales |
| flixweed |
Descurainia sophia |
Brassicaceae |
Capparales |
| sessile tickclover |
Desmodium sessilifolium |
Fabaceae (Leguminosae) |
Fabales |
| Deptford pink |
Dianthus armeria |
Caryophyllaceae |
Caryophyllales |
| bluedicks |
Dichelostemma capitatum |
Liliaceae |
Liliales |
| Carolina dichondra |
Dichondra carolinensis |
Convolvulaceae |
Solanales |
| Asian ponysfoot |
Dichondra micrantha |
Convolvulaceae |
Solanales |
| foxglove |
Digitalis purpurea |
Scrophulariaceae |
Scrophulariales |
| glandular Cape marigold |
Dimorphotheca sinuata |
Asteraceae |
Asterales |
| poorjoe |
Diodia teres |
Rubiaceae |
Rubiales |
| wall rocket |
Diplotaxis tenuifolia |
Brassicaceae |
Capparales |
| common teasel |
Dipsacus fullonum |
Dipsacaceae |
Dipsacales |
| cutleaf teasel |
Dipsacus laciniatus |
Dipsacaceae |
Dipsacales |
| Fuller's teasel |
Dipsacus sativus |
Dipsacaceae |
Dipsacales |
| stinkwort |
Dittrichia graveolens |
Asteraceae |
Asterales |
| wood whitlowgrass |
Draba nemorosa |
Brassicaceae |
Capparales |
| spring whitlowgrass |
Draba verna |
Brassicaceae |
Capparales |
| clasping coneflower |
Dracopis amplexicaulis |
Asteraceae |
Asterales |
| alfombrilla |
Drymaria arenarioides |
Caryophyllaceae |
Caryophyllales |
| Indian mock-strawberry |
Duchesnea indica |
Rosaceae |
Rosales |
| mexicantea |
Dysphania ambrosioides |
Chenopodiaceae |
Caryophyllales |
| clammy goosefoot |
Dysphania pumilio |
Chenopodiaceae |
Caryophyllales |
| pale echinacea |
Echinacea pallida |
Asteraceae |
Asterales |
| purple coneflower |
Echinacea purpurea |
Asteraceae |
Asterales |
| creeping burhead |
Echinodorus cordifolius |
Alismataceae |
Alismatales |
| great globethistle |
Echinops sphaerocephalus |
Asteraceae |
Asterales |
| pine echium |
Echium pininana |
Boraginaceae |
Lamiales |
| salvation jane |
Echium plantagineum |
Boraginaceae |
Lamiales |
| blueweed |
Echium vulgare |
Boraginaceae |
Lamiales |
| eclipta |
Eclipta prostrata |
Asteraceae |
Asterales |
| purple elephant's-foot |
Elephantopus nudatus |
Asteraceae |
Asterales |
| common elodea |
Elodea canadensis |
Hydrocharitaceae |
Hydrocharitales |
| western elodea |
Elodea nuttallii |
Hydrocharitaceae |
Hydrocharitales |
| three-cornered jack |
Emex australis |
Polygonaceae |
Polygonales |
| spiny emex |
Emex spinosa |
Polygonaceae |
Polygonales |
| Cupid's-shaving-brush |
Emilia fosbergii |
Asteraceae |
Asterales |
| panicle willowherb |
Epilobium brachycarpum |
Onagraceae |
Myrtales |
| hairy willowherb |
Epilobium hirsutum |
Onagraceae |
Myrtales |
| helleborine |
Epipactis helleborine |
Orchidaceae |
Orchidales |
| field horsetail |
Equisetum arvense |
Equisetaceae |
Equisetales |
| scouringrush |
Equisetum hyemale |
Equisetaceae |
Equisetales |
| smooth horsetail |
Equisetum laevigatum |
Equisetaceae |
Equisetales |
| cutleaf burnweed |
Erechtites glomeratus |
Asteraceae |
Asterales |
| American burnweed |
Erechtites hieraciifolius |
Asteraceae |
Asterales |
| Australian burnweed |
Erechtites minimus |
Asteraceae |
Asterales |
| annual fleabane |
Erigeron annuus |
Asteraceae |
Asterales |
| poor-robin fleabane |
Erigeron pulchellus |
Asteraceae |
Asterales |
| rough fleabane |
Erigeron strigosus |
Asteraceae |
Asterales |
| broadleaf filaree |
Erodium botrys |
Geraniaceae |
Geraniales |
| shortfruit stork's bill |
Erodium brachycarpum |
Geraniaceae |
Geraniales |
| redstem filaree |
Erodium cicutarium |
Geraniaceae |
Geraniales |
| whitestem filaree |
Erodium moschatum |
Geraniaceae |
Geraniales |
| Texas filaree |
Erodium texanum |
Geraniaceae |
Geraniales |
| button snakeroot |
Eryngium yuccifolium |
Apiaceae |
Apiales |
| Western wallflower |
Erysimum asperum |
Brassicaceae |
Capparales |
| wallflower mustard |
Erysimum cheiranthoides |
Brassicaceae |
Capparales |
| bushy wallflower |
Erysimum repandum |
Brassicaceae |
Capparales |
| California poppy |
Eschscholzia californica |
Papaveraceae |
Papaverales |
| dogfennel |
Eupatorium capillifolium |
Asteraceae |
Asterales |
| yankeeweed |
Eupatorium compositifolium |
Asteraceae |
Asterales |
| trumpetweed |
Eupatorium fistulosum |
Asteraceae |
Asterales |
| boneset |
Eupatorium perfoliatum |
Asteraceae |
Asterales |
| sweet joepyeweed |
Eupatorium purpureum |
Asteraceae |
Asterales |
| late boneset |
Eupatorium serotinum |
Asteraceae |
Asterales |
| flowering spurge |
Euphorbia corollata |
Euphorbiaceae |
Euphorbiales |
| painted poinsettia |
Euphorbia cyathophora |
Euphorbiaceae |
Euphorbiales |
| cypress spurge |
Euphorbia cyparissias |
Euphorbiaceae |
Euphorbiales |
| toothed spurge |
Euphorbia dentata |
Euphorbiaceae |
Euphorbiales |
| leafy spurge |
Euphorbia esula |
Euphorbiaceae |
Euphorbiales |
| sun spurge |
Euphorbia helioscopia |
Euphorbiaceae |
Euphorbiales |
| wild poinsettia |
Euphorbia heterophylla |
Euphorbiaceae |
Euphorbiales |
| spotted spurge |
Euphorbia maculata |
Euphorbiaceae |
Euphorbiales |
| snow-on-the-mountain |
Euphorbia marginata |
Euphorbiaceae |
Euphorbiales |
| myrtle spurge |
Euphorbia myrsinites |
Euphorbiaceae |
Euphorbiales |
| petty spurge |
Euphorbia peplus |
Euphorbiaceae |
Euphorbiales |
| creeping spurge |
Euphorbia serpens |
Euphorbiaceae |
Euphorbiales |
| netseed spurge |
Euphorbia spathulata |
Euphorbiaceae |
Euphorbiales |
| Geraldton carnation weed |
Euphorbia terracina |
Euphorbiaceae |
Euphorbiales |
| narrowleaf goldenrod |
Euthamia graminifolia |
Asteraceae |
Asterales |
| slender goldenrod |
Euthamia tenuifolia |
Asteraceae |
Asterales |
| buckwheat |
Fagopyrum esculentum |
Polygonaceae |
Polygonales |
| Japanese knotweed |
Fallopia japonica |
Polygonaceae |
Polygonales |
| Sakhalin knotweed |
Fallopia sachalinensis |
Polygonaceae |
Polygonales |
| mulberryweed |
Fatoua villosa |
Moraceae |
Urticales |
| dropwort |
Filipendula vulgaris |
Rosaceae |
Rosales |
| clusterflower |
Flaveria trinervia |
Asteraceae |
Asterales |
| fennel |
Foeniculum vulgare |
Apiaceae |
Apiales |
| wild strawberry |
Fragaria virginiana |
Rosaceae |
Rosales |
| plains snakecotton |
Froelichia floridana |
Amaranthaceae |
Caryophyllales |
| white ramping fumitory |
Fumaria capreolata |
Fumariaceae |
Papaverales |
| drug fumitory |
Fumaria officinalis |
Fumariaceae |
Papaverales |
| rosering gaillardia |
Gaillardia pulchella |
Asteraceae |
Asterales |
| goatsrue |
Galega officinalis |
Fabaceae (Leguminosae) |
Fabales |
| common hempnettle |
Galeopsis tetrahit |
Lamiaceae |
Lamiales |
| smallflower galinsoga |
Galinsoga parviflora |
Asteraceae |
Asterales |
| hairy galinsoga |
Galinsoga quadriradiata |
Asteraceae |
Asterales |
| catchweed bedstraw |
Galium aparine |
Rubiaceae |
Rubiales |
| rough bedstraw |
Galium asprellum |
Rubiaceae |
Rubiales |
| northern bedstraw |
Galium boreale |
Rubiaceae |
Rubiales |
| Lamarck's bedstraw |
Galium divaricatum |
Rubiaceae |
Rubiales |
| smooth bedstraw |
Galium mollugo |
Rubiaceae |
Rubiales |
| yellow wall bedstraw |
Galium murale |
Rubiaceae |
Rubiales |
| wall bedstraw |
Galium parisiense |
Rubiaceae |
Rubiales |
| yellow bedstraw |
Galium verum |
Rubiaceae |
Rubiales |
| purple cudweed |
Gamochaeta purpurea |
Asteraceae |
Asterales |
| wintergreen |
Gaultheria procumbens |
Ericaceae |
Ericales |
| Drummond's beeblossom |
Gaura drummondii |
Onagraceae |
Myrtales |
| wavyleaf gaura |
Gaura sinuata |
Onagraceae |
Myrtales |
| Carolina geranium |
Geranium carolinianum |
Geraniaceae |
Geraniales |
| cutleaf geranium |
Geranium dissectum |
Geraniaceae |
Geraniales |
| wild geranium |
Geranium maculatum |
Geraniaceae |
Geraniales |
| dovefoot geranium |
Geranium molle |
Geraniaceae |
Geraniales |
| New Zealand geranium |
Geranium retrorsum |
Geraniaceae |
Geraniales |
| herb-robert |
Geranium robertianum |
Geraniaceae |
Geraniales |
| yellow avens |
Geum aleppicum |
Rosaceae |
Rosales |
| rose vervain |
Glandularia canadensis |
Verbenaceae |
Lamiales |
| moss vervain |
Glandularia pulchella |
Verbenaceae |
Lamiales |
| ground ivy |
Glechoma hederacea |
Lamiaceae |
Lamiales |
| wild licorice |
Glycyrrhiza lepidota |
Fabaceae (Leguminosae) |
Fabales |
| western marsh cudweed |
Gnaphalium palustre |
Asteraceae |
Asterales |
| Great Valley gumweed |
Grindelia camporum |
Asteraceae |
Asterales |
| curlycup gumweed |
Grindelia squarrosa |
Asteraceae |
Asterales |
| babysbreath |
Gypsophila paniculata |
Caryophyllaceae |
Caryophyllales |
| western stickseed |
Hackelia floribunda |
Boraginaceae |
Lamiales |
| halogeton |
Halogeton glomeratus |
Chenopodiaceae |
Caryophyllales |
| bitter sneezeweed |
Helenium amarum |
Asteraceae |
Asterales |
| common sneezeweed |
Helenium autumnale |
Asteraceae |
Asterales |
| Bigelow's sneezeweed |
Helenium bigelovii |
Asteraceae |
Asterales |
| common sunflower |
Helianthus annuus |
Asteraceae |
Asterales |
| Maximilian sunflower |
Helianthus maximiliani |
Asteraceae |
Asterales |
| Nuttall's sunflower |
Helianthus nuttallii |
Asteraceae |
Asterales |
| prairie sunflower |
Helianthus petiolaris |
Asteraceae |
Asterales |
| Jerusalem artichoke |
Helianthus tuberosus |
Asteraceae |
Asterales |
| oxeye |
Heliopsis helianthoides |
Asteraceae |
Asterales |
| clasping heliotrope |
Heliotropium amplexicaule |
Boraginaceae |
Lamiales |
| seaside heliotrope |
Heliotropium curassavicum |
Boraginaceae |
Lamiales |
| European heliotrope |
Heliotropium europaeum |
Boraginaceae |
Lamiales |
| Indian heliotrope |
Heliotropium indicum |
Boraginaceae |
Lamiales |
| bristly oxtongue |
Helminthotheca echioides |
Asteraceae |
Asterales |
| tawny daylily |
Hemerocallis fulva |
Liliaceae |
Liliales |
| Fitch's tarweed |
Hemizonia fitchii |
Asteraceae |
Asterales |
| giant hogweed |
Heracleum mantegazzianum |
Apiaceae |
Apiales |
| common cowparsnip |
Heracleum maximum |
Apiaceae |
Apiales |
| damesrocket |
Hesperis matronalis |
Brassicaceae |
Capparales |
| ducksalad |
Heteranthera limosa |
Pontederiaceae |
Liliales |
| roundleaf mudplantain |
Heteranthera reniformis |
Pontederiaceae |
Liliales |
| telegraphplant |
Heterotheca grandiflora |
Asteraceae |
Asterales |
| camphorweed |
Heterotheca subaxillaris |
Asteraceae |
Asterales |
| hairy false goldenaster |
Heterotheca villosa |
Asteraceae |
Asterales |
| Venice mallow |
Hibiscus trionum |
Malvaceae |
Malvales |
| orange hawkweed |
Hieracium aurantiacum |
Asteraceae |
Asterales |
| meadow hawkweed |
Hieracium caespitosum |
Asteraceae |
Asterales |
| gronovius hawkweed |
Hieracium gronovii |
Asteraceae |
Asterales |
| mouseear hawkweed |
Hieracium pilosella |
Asteraceae |
Asterales |
| marestail |
Hippuris vulgaris |
Hippuridaceae |
Callitrichales |
| shortpod mustard |
Hirschfeldia incana |
Brassicaceae |
Capparales |
| virgate tarweed |
Holocarpha virgata |
Asteraceae |
Asterales |
| bluets |
Houstonia caerulea |
Rubiaceae |
Rubiales |
| roundleaf bluet |
Houstonia procumbens |
Rubiaceae |
Rubiales |
| common frogbit |
Hydrocharis morsus-ranae |
Hydrocharitaceae |
Hydrocharitales |
| coastal plain pennywort |
Hydrocotyle bonariensis |
Apiaceae |
Apiales |
| floating pennywort |
Hydrocotyle ranunculoides |
Apiaceae |
Apiales |
| lawn pennywort |
Hydrocotyle sibthorpioides |
Apiaceae |
Apiales |
| water pennywort |
Hydrocotyle umbellata |
Apiaceae |
Apiales |
| whorled pennywort |
Hydrocotyle verticillata |
Apiaceae |
Apiales |
| miramar weed |
Hygrophila polysperma |
Acanthaceae |
Scrophulariales |
| live-forever stonecrop |
Hylotelephium telephium |
Crassulaceae |
Rosales |
| orange sneezeweed |
Hymenoxys hoopesii |
Asteraceae |
Asterales |
| black henbane |
Hyoscyamus niger |
Solanaceae |
Solanales |
| pineweed |
Hypericum gentianoides |
Clusiaceae |
Theales |
| dwarf St. Johnswort |
Hypericum mutilum |
Clusiaceae |
Theales |
| common St. Johnswort |
Hypericum perforatum |
Clusiaceae |
Theales |
| spotted St. Johnswort |
Hypericum punctatum |
Clusiaceae |
Theales |
| smooth cat's ear |
Hypochaeris glabra |
Asteraceae |
Asterales |
| hairy cat's ear |
Hypochaeris radicata |
Asteraceae |
Asterales |
| comb bushmint |
Hyptis pectinata |
Lamiaceae |
Lamiales |
| yellow unicorn-plant |
Ibicella lutea |
Pedaliaceae |
Scrophulariales |
| jewelweed |
Impatiens capensis |
Balsaminaceae |
Geraniales |
| ornamental jewelweed |
Impatiens glandulifera |
Balsaminaceae |
Geraniales |
| British yellowhead |
Inula britannica |
Asteraceae |
Asterales |
| Douglas iris |
Iris douglasiana |
Iridaceae |
Liliales |
| Rocky Mountain iris |
Iris missouriensis |
Iridaceae |
Liliales |
| yellowflag iris |
Iris pseudacorus |
Iridaceae |
Liliales |
| blueflag iris |
Iris versicolor |
Iridaceae |
Liliales |
| Virginia iris |
Iris virginica |
Iridaceae |
Liliales |
| Dyer's woad |
Isatis tinctoria |
Brassicaceae |
Capparales |
| annual marshelder |
Iva annua |
Asteraceae |
Asterales |
| American waterwillow |
Justicia americana |
Acanthaceae |
Scrophulariales |
| sharppoint fluvellin |
Kickxia elatine |
Scrophulariaceae |
Scrophulariales |
| bluebuttons |
Knautia arvensis |
Dipsacaceae |
Dipsacales |
| Mexican fireweed |
Kochia scoparia |
Chenopodiaceae |
Caryophyllales |
| Korean lespedeza |
Kummerowia stipulacea |
Fabaceae (Leguminosae) |
Fabales |
| common lespedeza |
Kummerowia striata |
Fabaceae (Leguminosae) |
Fabales |
| Carolina redroot |
Lachnanthes caroliana |
Haemodoraceae |
Liliales |
| tall lettuce |
Lactuca canadensis |
Asteraceae |
Asterales |
| Florida wild lettuce |
Lactuca floridana |
Asteraceae |
Asterales |
| willowleaf lettuce |
Lactuca saligna |
Asteraceae |
Asterales |
| prickly lettuce |
Lactuca serriola |
Asteraceae |
Asterales |
| bitter lettuce |
Lactuca virosa |
Asteraceae |
Asterales |
| Coulter's horseweed |
Laennecia coulteri |
Asteraceae |
Asterales |
| henbit |
Lamium amplexicaule |
Lamiaceae |
Lamiales |
| spotted deadnettle |
Lamium maculatum |
Lamiaceae |
Lamiales |
| purple deadnettle |
Lamium purpureum |
Lamiaceae |
Lamiales |
| western sticktight |
Lappula occidentalis |
Boraginaceae |
Lamiales |
| European sticktight |
Lappula squarrosa |
Boraginaceae |
Lamiales |
| rough peavine |
Lathyrus hirsutus |
Fabaceae (Leguminosae) |
Fabales |
| inflated duckweed |
Lemna gibba |
Lemnaceae |
Arales |
| minute duckweed |
Lemna minuta |
Lemnaceae |
Arales |
| lionsear |
Leonotis nepetifolia |
Lamiaceae |
Lamiales |
| fall hawkbit |
Leontodon autumnalis |
Asteraceae |
Asterales |
| lesser hawkbit |
Leontodon taraxacoides |
Asteraceae |
Asterales |
| motherwort |
Leonurus cardiaca |
Lamiaceae |
Lamiales |
| field pepperweed |
Lepidium campestre |
Brassicaceae |
Capparales |
| orbicular whitetop |
Lepidium chalepense |
Brassicaceae |
Capparales |
| greenflower pepperweed |
Lepidium densiflorum |
Brassicaceae |
Capparales |
| hoary cress |
Lepidium draba |
Brassicaceae |
Capparales |
| perennial pepperweed |
Lepidium latifolium |
Brassicaceae |
Capparales |
| tongue pepperweed |
Lepidium nitidum |
Brassicaceae |
Capparales |
| clasping pepperweed |
Lepidium perfoliatum |
Brassicaceae |
Capparales |
| garden cress |
Lepidium sativum |
Brassicaceae |
Capparales |
| Virginia pepperweed |
Lepidium virginicum |
Brassicaceae |
Capparales |
| Thunberg lespedeza |
Lespedeza thunbergii |
Fabaceae (Leguminosae) |
Fabales |
| violet lespedeza |
Lespedeza violacea |
Fabaceae (Leguminosae) |
Fabales |
| oxeye daisy |
Leucanthemum vulgare |
Asteraceae |
Asterales |
| ceniza |
Leucophyllum frutescens |
Scrophulariaceae |
Scrophulariales |
| dotted gayfeather |
Liatris punctata |
Asteraceae |
Asterales |
| tiger lily |
Lilium lancifolium |
Liliaceae |
Liliales |
| limnophila |
Limnophila sessiliflora |
Scrophulariaceae |
Scrophulariales |
| Dalmatian toadflax |
Linaria dalmatica |
Scrophulariaceae |
Scrophulariales |
| broomleaf toadflax |
Linaria genistifolia |
Scrophulariaceae |
Scrophulariales |
| Moroccan toadflax |
Linaria maroccana |
Scrophulariaceae |
Scrophulariales |
| purple toadflax |
Linaria purpurea |
Scrophulariaceae |
Scrophulariales |
| yellow toadflax |
Linaria vulgaris |
Scrophulariaceae |
Scrophulariales |
| pale flax |
Linum bienne |
Linaceae |
Linales |
| common flax |
Linum usitatissimum |
Linaceae |
Linales |
| hoary puccoon |
Lithospermum canescens |
Boraginaceae |
Lamiales |
| cardinalflower |
Lobelia cardinalis |
Campanulaceae |
Campanulales |
| Indiantobacco |
Lobelia inflata |
Campanulaceae |
Campanulales |
| great blue lobelia |
Lobelia siphilitica |
Campanulaceae |
Campanulales |
| sweet alyssum |
Lobularia maritima |
Brassicaceae |
Capparales |
| narrowleaf cottonrose |
Logfia gallica |
Asteraceae |
Asterales |
| birdsfoot trefoil |
Lotus corniculatus |
Fabaceae (Leguminosae) |
Fabales |
| narrowleaf bird's-foot trefoil |
Lotus tenuis |
Fabaceae (Leguminosae) |
Fabales |
| bushy waterprimrose |
Ludwigia alternifolia |
Onagraceae |
Myrtales |
| winged waterprimrose |
Ludwigia decurrens |
Onagraceae |
Myrtales |
| waterpurslane |
Ludwigia palustris |
Onagraceae |
Myrtales |
| creeping waterprimrose |
Ludwigia peploides |
Onagraceae |
Myrtales |
| primrose-willow |
Ludwigia peruviana |
Onagraceae |
Myrtales |
| floating waterprimrose |
Ludwigia repens |
Onagraceae |
Myrtales |
| miniature lupine |
Lupinus bicolor |
Fabaceae (Leguminosae) |
Fabales |
| tailcup lupine |
Lupinus caudatus |
Fabaceae (Leguminosae) |
Fabales |
| perennial lupine |
Lupinus perennis |
Fabaceae (Leguminosae) |
Fabales |
| bigleaf lupine |
Lupinus polyphyllus |
Fabaceae (Leguminosae) |
Fabales |
| silky lupine |
Lupinus sericeus |
Fabaceae (Leguminosae) |
Fabales |
| American bugleweed |
Lycopus americanus |
Lamiaceae |
Lamiales |
| European bugleweed |
Lycopus europaeus |
Lamiaceae |
Lamiales |
| slender bugleweed |
Lycopus uniflorus |
Lamiaceae |
Lamiales |
| scarlet pimpernel |
Lysimachia arvensis |
Primulaceae |
Primulales |
| fringed loosestrife |
Lysimachia ciliata |
Primulaceae |
Primulales |
| moneywort |
Lysimachia nummularia |
Primulaceae |
Primulales |
| dotted loosestrife |
Lysimachia punctata |
Primulaceae |
Primulales |
| swampcandle |
Lysimachia terrestris |
Primulaceae |
Primulales |
| garden loosestrife |
Lysimachia vulgaris |
Primulaceae |
Primulales |
| California loosestrife |
Lythrum californicum |
Lythraceae |
Myrtales |
| hyssop loosestrife |
Lythrum hyssopifolium |
Lythraceae |
Myrtales |
| purple loosestrife |
Lythrum salicaria |
Lythraceae |
Myrtales |
| threebract loosestrife |
Lythrum tribracteatum |
Lythraceae |
Myrtales |
| lacy tansyaster |
Machaeranthera pinnatifida |
Asteraceae |
Asterales |
| tahoka daisy |
Machaeranthera tanacetifolia |
Asteraceae |
Asterales |
| false lily-of-the-valley |
Maianthemum canadense |
Liliaceae |
Liliales |
| coppery mesemb |
Malephora crocea |
Aizoaceae |
Caryophyllales |
| musk mallow |
Malva moschata |
Malvaceae |
Malvales |
| common mallow |
Malva neglecta |
Malvaceae |
Malvales |
| bull mallow |
Malva nicaeensis |
Malvaceae |
Malvales |
| little mallow |
Malva parviflora |
Malvaceae |
Malvales |
| high mallow |
Malva sylvestris |
Malvaceae |
Malvales |
| alkali mallow |
Malvella leprosa |
Malvaceae |
Malvales |
| European pepperwort |
Marsilea quadrifolia |
Marsileaceae |
Hydropteridales |
| hairy pepperwort |
Marsilea vestita |
Marsileaceae |
Hydropteridales |
| pineapple-weed |
Matricaria discoidea |
Asteraceae |
Asterales |
| wild chamomile |
Matricaria recutita |
Asteraceae |
Asterales |
| Asian mazus |
Mazus pumilus |
Scrophulariaceae |
Scrophulariales |
| black medic |
Medicago lupulina |
Fabaceae (Leguminosae) |
Fabales |
| little burclover |
Medicago minima |
Fabaceae (Leguminosae) |
Fabales |
| cow-wheat |
Melampyrum lineare |
Scrophulariaceae |
Scrophulariales |
| annual yellow sweetclover |
Melilotus indicus |
Fabaceae (Leguminosae) |
Fabales |
| yellow sweetclover |
Melilotus officinalis |
Fabaceae (Leguminosae) |
Fabales |
| creeping cucumber |
Melothria pendula |
Cucurbitaceae |
Violales |
| pennyroyal |
Mentha pulegium |
Lamiaceae |
Lamiales |
| spearmint |
Mentha spicata |
Lamiaceae |
Lamiales |
| apple mint |
Mentha suaveolens |
Lamiaceae |
Lamiales |
| tenpetal stickleaf |
Mentzelia decapetala |
Loasaceae |
Violales |
| smoothstem blazingstar |
Mentzelia laevicaulis |
Loasaceae |
Violales |
| crystalline iceplant |
Mesembryanthemum crystallinum |
Aizoaceae |
Caryophyllales |
| slenderleaf iceplant |
Mesembryanthemum nodiflorum |
Aizoaceae |
Caryophyllales |
| globifera |
Micranthemum umbrosum |
Scrophulariaceae |
Scrophulariales |
| sensitiveplant |
Mimosa pudica |
Fabaceae (Leguminosae) |
Fabales |
| seep monkeyflower |
Mimulus guttatus |
Scrophulariaceae |
Scrophulariales |
| common four-o'clock |
Mirabilis jalapa |
Nyctaginaceae |
Caryophyllales |
| wild four-o'clock |
Mirabilis nyctaginea |
Nyctaginaceae |
Caryophyllales |
| linearleaf snapdragon |
Misopates orontium |
Scrophulariaceae |
Scrophulariales |
| bristly mallow |
Modiola caroliniana |
Malvaceae |
Malvales |
| carpetweed |
Mollugo verticillata |
Molluginaceae |
Caryophyllales |
| lemon beebalm |
Monarda citriodora |
Lamiaceae |
Lamiales |
| wild bergamot |
Monarda fistulosa |
Lamiaceae |
Lamiales |
| spotted beebalm |
Monarda punctata |
Lamiaceae |
Lamiales |
| arrowleaved monochoria |
Monochoria hastata |
Pontederiaceae |
Liliales |
| monochoria |
Monochoria vaginalis |
Pontederiaceae |
Liliales |
| Nuttall povertyweed |
Monolepis nuttalliana |
Chenopodiaceae |
Caryophyllales |
| marsh dayflower |
Murdannia keisak |
Commelinaceae |
Commelinales |
| doveweed |
Murdannia nudiflora |
Commelinaceae |
Commelinales |
| wall lettuce |
Mycelis muralis |
Asteraceae |
Asterales |
| broadleaf forget-me-not |
Myosotis latifolia |
Boraginaceae |
Lamiales |
| true forget-me-not |
Myosotis scorpioides |
Boraginaceae |
Lamiales |
| mousetail |
Myosurus minimus |
Ranunculaceae |
Ranunculales |
| slender naiad |
Najas flexilis |
Najadaceae |
Najadales |
| southern naiad |
Najas guadalupensis |
Najadaceae |
Najadales |
| hollyleaf naiad |
Najas marina |
Najadaceae |
Najadales |
| watercress |
Nasturtium officinale |
Brassicaceae |
Capparales |
| catnip |
Nepeta cataria |
Lamiaceae |
Lamiales |
| apple-of-Peru |
Nicandra physalodes |
Solanaceae |
Solanales |
| manyflower tobacco |
Nicotiana acuminata var. multiflora |
Solanaceae |
Solanales |
| Indian tobacco |
Nicotiana quadrivalvis |
Solanaceae |
Solanales |
| yellow waterlily |
Nuphar lutea |
Nymphaeaceae |
Nymphaeales |
| Canada toadflax |
Nuttallanthus canadensis |
Scrophulariaceae |
Scrophulariales |
| Texas toadflax |
Nuttallanthus texanus |
Scrophulariaceae |
Scrophulariales |
| Mexican waterlily |
Nymphaea mexicana |
Nymphaeaceae |
Nymphaeales |
| big floatingheart |
Nymphoides aquatica |
Menyanthaceae |
Solanales |
| prairie evening-primrose |
Oenothera albicaulis |
Onagraceae |
Myrtales |
| common evening-primrose |
Oenothera biennis |
Onagraceae |
Myrtales |
| cutleaf evening-primrose |
Oenothera laciniata |
Onagraceae |
Myrtales |
| showy evening-primrose |
Oenothera speciosa |
Onagraceae |
Myrtales |
| old world diamond-flower |
Oldenlandia corymbosa |
Rubiaceae |
Rubiales |
| Scotch thistle |
Onopordum acanthium |
Asteraceae |
Asterales |
| Illyrian cottonthistle |
Onopordum illyricum |
Asteraceae |
Asterales |
| bull cottonthistle |
Onopordum tauricum |
Asteraceae |
Asterales |
| wild marjoram |
Origanum vulgare |
Lamiaceae |
Lamiales |
| star-of-Bethlehem |
Ornithogalum umbellatum |
Liliaceae |
Liliales |
| nodding broomrape |
Orobanche cernua |
Orobanchaceae |
Scrophulariales |
| desert broomrape |
Orobanche cooperi |
Orobanchaceae |
Scrophulariales |
| crenate broomrape |
Orobanche crenata |
Orobanchaceae |
Scrophulariales |
| small broomrape |
Orobanche minor |
Orobanchaceae |
Scrophulariales |
| branched broomrape |
Orobanche ramosa |
Orobanchaceae |
Scrophulariales |
| creeping woodsorrel |
Oxalis corniculata |
Oxalidaceae |
Geraniales |
| buttercup oxalis |
Oxalis pes-caprae |
Oxalidaceae |
Geraniales |
| yellow woodsorrel |
Oxalis stricta |
Oxalidaceae |
Geraniales |
| violet woodsorrel |
Oxalis violacea |
Oxalidaceae |
Geraniales |
| Lambert crazyweed |
Oxytropis lambertii |
Fabaceae (Leguminosae) |
Fabales |
| white locoweed |
Oxytropis sericea |
Fabaceae (Leguminosae) |
Fabales |
| showy crazyweed |
Oxytropis splendens |
Fabaceae (Leguminosae) |
Fabales |
| golden ragwort |
Packera aurea |
Asteraceae |
Asterales |
| cressleaf groundsel |
Packera glabella |
Asteraceae |
Asterales |
| balsam groundsel |
Packera paupercula |
Asteraceae |
Asterales |
| field poppy |
Papaver dubium |
Papaveraceae |
Papaverales |
| corn poppy |
Papaver rhoeas |
Papaveraceae |
Papaverales |
| opium poppy |
Papaver somniferum |
Papaveraceae |
Papaverales |
| broadleaf glandweed |
Parentucellia latifolia |
Scrophulariaceae |
Scrophulariales |
| yellow glandweed |
Parentucellia viscosa |
Scrophulariaceae |
Scrophulariales |
| ragweed parthenium |
Parthenium hysterophorus |
Asteraceae |
Asterales |
| wild parsnip |
Pastinaca sativa |
Apiaceae |
Apiales |
| African rue |
Peganum harmala |
Zygophyllaceae |
Sapindales |
| Eaton penstemon |
Penstemon eatonii |
Scrophulariaceae |
Scrophulariales |
| perilla mint |
Perilla frutescens |
Lamiaceae |
Lamiales |
| swamp smartweed |
Persicaria hydropiperoides |
Polygonaceae |
Polygonales |
| pale smartweed |
Persicaria lapathifolia |
Polygonaceae |
Polygonales |
| ladysthumb |
Persicaria maculosa |
Polygonaceae |
Polygonales |
| dotted smartweed |
Persicaria punctata |
Polygonaceae |
Polygonales |
| cultivated knotweed |
Persicaria wallichii |
Polygonaceae |
Polygonales |
| hairypink |
Petrorhagia dubia |
Caryophyllaceae |
Caryophyllales |
| Miami mist |
Phacelia purshii |
Hydrophyllaceae |
Solanales |
| northern fogfruit |
Phyla lanceolata |
Verbenaceae |
Lamiales |
| mat lippia |
Phyla nodiflora |
Verbenaceae |
Lamiales |
| niruri |
Phyllanthus niruri |
Euphorbiaceae |
Euphorbiales |
| chamber bitter |
Phyllanthus urinaria |
Euphorbiaceae |
Euphorbiales |
| sharpleaf groundcherry |
Physalis acutifolia |
Solanaceae |
Solanales |
| strawberry groundcherry |
Physalis alkekengi |
Solanaceae |
Solanales |
| cutleaf groundcherry |
Physalis angulata |
Solanaceae |
Solanales |
| clammy groundcherry |
Physalis heterophylla |
Solanaceae |
Solanales |
| smooth groundcherry |
Physalis longifolia var. subglabrata |
Solanaceae |
Solanales |
| tomatillo groundcherry |
Physalis philadelphica |
Solanaceae |
Solanales |
| Virginia groundcherry |
Physalis virginiana |
Solanaceae |
Solanales |
| common pokeweed |
Phytolacca americana |
Phytolaccaceae |
Caryophyllales |
| hawkweed oxtongue |
Picris hieracioides |
Asteraceae |
Asterales |
| artilleryweed |
Pilea microphylla |
Urticaceae |
Urticales |
| clearweed |
Pilea pumila |
Urticaceae |
Urticales |
| silk-grass |
Pityopsis graminifolia |
Asteraceae |
Asterales |
| bracted plantain |
Plantago aristata |
Plantaginaceae |
Plantaginales |
| buckhorn plantain |
Plantago coronopus |
Plantaginaceae |
Plantaginales |
| buckhorn plantain |
Plantago lanceolata |
Plantaginaceae |
Plantaginales |
| broadleaf plantain |
Plantago major |
Plantaginaceae |
Plantaginales |
| woolly plantain |
Plantago patagonica |
Plantaginaceae |
Plantaginales |
| blackseed plantain |
Plantago rugelii |
Plantaginaceae |
Plantaginales |
| paleseed plantain |
Plantago virginica |
Plantaginaceae |
Plantaginales |
| stinkweed |
Pluchea camphorata |
Asteraceae |
Asterales |
| roughseed clammyweed |
Polanisia dodecandra |
Capparaceae |
Capparales |
| blue Jacob's-ladder |
Polemonium caeruleum |
Polemoniaceae |
Solanales |
| fourleaf manyseed |
Polycarpon tetraphyllum |
Caryophyllaceae |
Caryophyllales |
| smooth Solomon's seal |
Polygonatum biflorum |
Liliaceae |
Liliales |
| longroot smartweed |
Polygonum amphibium var. emersum |
Polygonaceae |
Polygonales |
| water smartweed |
Polygonum amphibium var. stipulaceum |
Polygonaceae |
Polygonales |
| oval-leaf knotweed |
Polygonum arenastrum |
Polygonaceae |
Polygonales |
| silversheath knotweed |
Polygonum argyrocoleon |
Polygonaceae |
Polygonales |
| prostrate knotweed |
Polygonum aviculare |
Polygonaceae |
Polygonales |
| blackfringe knotweed |
Polygonum cilinode |
Polygonaceae |
Polygonales |
| marshpepper smartweed |
Polygonum hydropiper |
Polygonaceae |
Polygonales |
| Pennsylvania smartweed |
Polygonum pensylvanicum |
Polygonaceae |
Polygonales |
| hedge smartweed |
Polygonum scandens |
Polygonaceae |
Polygonales |
| rustweed |
Polypremum procumbens |
Buddlejaceae |
Scrophulariales |
| pickerelweed |
Pontederia cordata |
Pontederiaceae |
Liliales |
| common purslane |
Portulaca oleracea |
Portulacaceae |
Caryophyllales |
| pink purslane |
Portulaca pilosa |
Portulacaceae |
Caryophyllales |
| waterthread pondweed |
Potamogeton diversifolius |
Potamogetonaceae |
Najadales |
| American pondweed |
Potamogeton nodosus |
Potamogetonaceae |
Najadales |
| white cinquefoil |
Potentilla arguta |
Rosaceae |
Rosales |
| dwarf cinquefoil |
Potentilla canadensis |
Rosaceae |
Rosales |
| rough cinquefoil |
Potentilla norvegica |
Rosaceae |
Rosales |
| sulfur cinquefoil |
Potentilla recta |
Rosaceae |
Rosales |
| oldfield cinquefoil |
Potentilla simplex |
Rosaceae |
Rosales |
| devil's-claw |
Proboscidea louisianica |
Pedaliaceae |
Scrophulariales |
| healall |
Prunella vulgaris |
Lamiaceae |
Lamiales |
| Jersey cudweed |
Pseudognaphalium luteoalbum |
Asteraceae |
Asterales |
| cottonbatting plant |
Pseudognaphalium stramineum |
Asteraceae |
Asterales |
| Carolina falsedandelion |
Pyrrhopappus carolinianus |
Asteraceae |
Asterales |
| purple groundcherry |
Quincula lobata |
Solanaceae |
Solanales |
| smallflower buttercup |
Ranunculus abortivus |
Ranunculaceae |
Ranunculales |
| tall buttercup |
Ranunculus acris |
Ranunculaceae |
Ranunculales |
| corn buttercup |
Ranunculus arvensis |
Ranunculaceae |
Ranunculales |
| spinyfruit buttercup |
Ranunculus muricatus |
Ranunculaceae |
Ranunculales |
| creeping buttercup |
Ranunculus repens |
Ranunculaceae |
Ranunculales |
| hairy buttercup |
Ranunculus sardous |
Ranunculaceae |
Ranunculales |
| wild radish |
Raphanus raphanistrum |
Brassicaceae |
Capparales |
| radish |
Raphanus sativus |
Brassicaceae |
Capparales |
| turnipweed |
Rapistrum rugosum |
Brassicaceae |
Capparales |
| upright prairie coneflower |
Ratibida columnifera |
Asteraceae |
Asterales |
| pinnate prairie coneflower |
Ratibida pinnata |
Asteraceae |
Asterales |
| yellow mignonette |
Reseda lutea |
Resedaceae |
Capparales |
| Russian knapweed |
Rhaponticum repens |
Asteraceae |
Asterales |
| Florida pusley |
Richardia scabra |
Rubiaceae |
Rubiales |
| great yellowcress |
Rorippa amphibia |
Brassicaceae |
Capparales |
| Austrian fieldcress |
Rorippa austriaca |
Brassicaceae |
Capparales |
| curvepod yellowcress |
Rorippa curvisiliqua |
Brassicaceae |
Capparales |
| marsh yellowcress |
Rorippa palustris |
Brassicaceae |
Capparales |
| yellow fieldcress |
Rorippa sylvestris |
Brassicaceae |
Capparales |
| black-eyed susan |
Rudbeckia hirta |
Asteraceae |
Asterales |
| wild petunia |
Ruellia caroliniensis |
Acanthaceae |
Scrophulariales |
| red sorrel |
Rumex acetosella |
Polygonaceae |
Polygonales |
| cluster dock |
Rumex conglomeratus |
Polygonaceae |
Polygonales |
| curly dock |
Rumex crispus |
Polygonaceae |
Polygonales |
| toothed dock |
Rumex dentatus |
Polygonaceae |
Polygonales |
| heartwing sorrel |
Rumex hastatulus |
Polygonaceae |
Polygonales |
| Kerner's dock |
Rumex kerneri |
Polygonaceae |
Polygonales |
| broadleaf dock |
Rumex obtusifolius |
Polygonaceae |
Polygonales |
| fiddleleaf dock |
Rumex pulcher |
Polygonaceae |
Polygonales |
| veiny dock |
Rumex venosus |
Polygonaceae |
Polygonales |
| annual pearlwort |
Sagina apetala |
Caryophyllaceae |
Caryophyllales |
| birdseye pearlwort |
Sagina procumbens |
Caryophyllaceae |
Caryophyllales |
| grassy arrowhead |
Sagittaria graminea |
Alismataceae |
Alismatales |
| lanceleaf arrowhead |
Sagittaria lancifolia |
Alismataceae |
Alismatales |
| common arrowhead |
Sagittaria latifolia |
Alismataceae |
Alismatales |
| Gregg arrowhead |
Sagittaria longiloba |
Alismataceae |
Alismatales |
| California arrowhead |
Sagittaria montevidensis |
Alismataceae |
Alismatales |
| awl-leaf arrowhead |
Sagittaria subulata |
Alismataceae |
Alismatales |
| slender Russian thistle |
Salsola collina |
Chenopodiaceae |
Caryophyllales |
| Russian thistle |
Salsola kali |
Chenopodiaceae |
Caryophyllales |
| barbwire Russian-thistle |
Salsola paulsenii |
Chenopodiaceae |
Caryophyllales |
| oppositeleaf Russian thistle |
Salsola soda |
Chenopodiaceae |
Caryophyllales |
| Russian-thistle |
Salsola tragus |
Chenopodiaceae |
Caryophyllales |
| Mediterranean saltwort |
Salsola vermiculata |
Chenopodiaceae |
Caryophyllales |
| Mediterranean sage |
Salvia aethiopis |
Lamiaceae |
Lamiales |
| lyreleaf sage |
Salvia lyrata |
Lamiaceae |
Lamiales |
| lanceleaf sage |
Salvia reflexa |
Lamiaceae |
Lamiales |
| Europe sage |
Salvia sclarea |
Lamiaceae |
Lamiales |
| whorled sage |
Salvia verticillata |
Lamiaceae |
Lamiales |
| water fern |
Salvinia minima |
Salviniaceae |
Hydropteridales |
| bouncingbet |
Saponaria officinalis |
Caryophyllaceae |
Caryophyllales |
| lizardstail |
Saururus cernuus |
Saururaceae |
Piperales |
| venus-comb |
Scandix pecten-veneris |
Apiaceae |
Apiales |
| licorice weed |
Scoparia dulcis |
Scrophulariaceae |
Scrophulariales |
| lanceleaf figwort |
Scrophularia lanceolata |
Scrophulariaceae |
Scrophulariales |
| marsh skullcap |
Scutellaria galericulata |
Lamiaceae |
Lamiales |
| mossy stonecrop |
Sedum acre |
Crassulaceae |
Rosales |
| two-row stonecrop |
Sedum spurium |
Crassulaceae |
Rosales |
| marsh fleabane |
Senecio congestus |
Asteraceae |
Asterales |
| redpurple ragwort |
Senecio elegans |
Asteraceae |
Asterales |
| tansy ragwort |
Senecio jacobaea |
Asteraceae |
Asterales |
| Madagascar ragwort |
Senecio madagascariensis |
Asteraceae |
Asterales |
| woodland groundsel |
Senecio sylvaticus |
Asteraceae |
Asterales |
| common groundsel |
Senecio vulgaris |
Asteraceae |
Asterales |
| wild senna |
Senna marilandica |
Fabaceae (Leguminosae) |
Fabales |
| sicklepod |
Senna obtusifolia |
Fabaceae (Leguminosae) |
Fabales |
| coffee senna |
Senna occidentalis |
Fabaceae (Leguminosae) |
Fabales |
| Drummond rattlebush |
Sesbania drummondii |
Fabaceae (Leguminosae) |
Fabales |
| hemp sesbania |
Sesbania exaltata |
Fabaceae (Leguminosae) |
Fabales |
| bigpod sesbania |
Sesbania herbacea |
Fabaceae (Leguminosae) |
Fabales |
| bagpod |
Sesbania vesicaria |
Fabaceae (Leguminosae) |
Fabales |
| field madder |
Sherardia arvensis |
Rubiaceae |
Rubiales |
| sibara |
Sibara virginica |
Brassicaceae |
Capparales |
| three-toothed cinquefoil |
Sibbaldiopsis tridentata |
Rosaceae |
Rosales |
| hairy catchfly |
Silene dichotoma |
Caryophyllaceae |
Caryophyllales |
| red campion |
Silene dioica |
Caryophyllaceae |
Caryophyllales |
| meadow campion |
Silene flos-cuculi |
Caryophyllaceae |
Caryophyllales |
| English catchfly |
Silene gallica |
Caryophyllaceae |
Caryophyllales |
| nightflowering catchfly |
Silene noctiflora |
Caryophyllaceae |
Caryophyllales |
| bladder campion |
Silene vulgaris |
Caryophyllaceae |
Caryophyllales |
| wholeleaf rosinweed |
Silphium integrifolium |
Asteraceae |
Asterales |
| compassplant |
Silphium laciniatum |
Asteraceae |
Asterales |
| cup rosinweed |
Silphium perfoliatum |
Asteraceae |
Asterales |
| blessed milkthistle |
Silybum marianum |
Asteraceae |
Asterales |
| white mustard |
Sinapis alba |
Brassicaceae |
Capparales |
| wild mustard |
Sinapis arvensis |
Brassicaceae |
Capparales |
| tumble mustard |
Sisymbrium altissimum |
Brassicaceae |
Capparales |
| Mediterranean rocket |
Sisymbrium erysimoides |
Brassicaceae |
Capparales |
| London rocket |
Sisymbrium irio |
Brassicaceae |
Capparales |
| tall hedge mustard |
Sisymbrium loeselii |
Brassicaceae |
Capparales |
| hedge mustard |
Sisymbrium officinale |
Brassicaceae |
Capparales |
| oriental mustard |
Sisymbrium orientale |
Brassicaceae |
Capparales |
| narrowleaf blueeyed-grass |
Sisyrinchium angustifolium |
Iridaceae |
Liliales |
| waterparsnip |
Sium suave |
Apiaceae |
Apiales |
| fuzzyfruit nightshade |
Solanum candidum |
Solanaceae |
Solanales |
| horsenettle |
Solanum carolinense |
Solanaceae |
Solanales |
| robust horsenettle |
Solanum dimidiatum |
Solanaceae |
Solanales |
| twoleaf nightshade |
Solanum diphyllum |
Solanaceae |
Solanales |
| silverleaf nightshade |
Solanum elaeagnifolium |
Solanaceae |
Solanales |
| Jamaican nightshade |
Solanum jamaicense |
Solanaceae |
Solanales |
| nipplefruit |
Solanum mammosum |
Solanaceae |
Solanales |
| hairy nightshade |
Solanum physalifolium |
Solanaceae |
Solanales |
| West Indian nightshade |
Solanum ptycanthum |
Solanaceae |
Solanales |
| buffalobur |
Solanum rostratum |
Solanaceae |
Solanales |
| sticky nightshade |
Solanum sisymbriifolium |
Solanaceae |
Solanales |
| turkeyberry |
Solanum torvum |
Solanaceae |
Solanales |
| cutleaf nightshade |
Solanum triflorum |
Solanaceae |
Solanales |
| purple nightshade |
Solanum xanti |
Solanaceae |
Solanales |
| Canada goldenrod |
Solidago canadensis |
Asteraceae |
Asterales |
| Canada goldenrod |
Solidago canadensis var. scabra |
Asteraceae |
Asterales |
| giant goldenrod |
Solidago gigantea |
Asteraceae |
Asterales |
| Missouri goldenrod |
Solidago missouriensis |
Asteraceae |
Asterales |
| gray goldenrod |
Solidago nemoralis |
Asteraceae |
Asterales |
| rough goldenrod |
Solidago rugosa |
Asteraceae |
Asterales |
| lawn burweed |
Soliva sessilis |
Asteraceae |
Asterales |
| perennial sowthistle |
Sonchus arvensis |
Asteraceae |
Asterales |
| moist sowthistle |
Sonchus arvensis ssp. uliginosus |
Asteraceae |
Asterales |
| spiny sowthistle |
Sonchus asper |
Asteraceae |
Asterales |
| annual sowthistle |
Sonchus oleraceus |
Asteraceae |
Asterales |
| silky sophora |
Sophora nuttalliana |
Fabaceae (Leguminosae) |
Fabales |
| corn spurry |
Spergula arvensis |
Caryophyllaceae |
Caryophyllales |
| Boccone's sandspurry |
Spergularia bocconii |
Caryophyllaceae |
Caryophyllales |
| red sandspurry |
Spergularia rubra |
Caryophyllaceae |
Caryophyllales |
| saltmarsh sandspurry |
Spergularia salina |
Caryophyllaceae |
Caryophyllales |
| broadleaf buttonweed |
Spermacoce alata |
Rubiaceae |
Rubiales |
| gooseweed |
Sphenoclea zeylanica |
Sphenocleaceae |
Campanulales |
| common duckmeat |
Spirodela polyrrhiza |
Lemnaceae |
Arales |
| Florida betony |
Stachys floridana |
Lamiaceae |
Lamiales |
| Jamaica vervain |
Stachytarpheta jamaicensis |
Verbenaceae |
Lamiales |
| Easterbell starwort |
Stellaria holostea |
Caryophyllaceae |
Caryophyllales |
| Alaska chickweed |
Stellaria longipes |
Caryophyllaceae |
Caryophyllales |
| common chickweed |
Stellaria media |
Caryophyllaceae |
Caryophyllales |
| common chickweed |
Stellaria pallida |
Caryophyllaceae |
Caryophyllales |
| star chickweed |
Stellaria pubera |
Caryophyllaceae |
Caryophyllales |
| whiteplume wirelettuce |
Stephanomeria exigua ssp. coronaria |
Asteraceae |
Asterales |
| witchweed |
Striga asiatica |
Scrophulariaceae |
Scrophulariales |
| cowpea witchweed |
Striga gesnerioides |
Scrophulariaceae |
Scrophulariales |
| amberique-bean |
Strophostyles helvola |
Fabaceae (Leguminosae) |
Fabales |
| western seepweed |
Suaeda calceoliformis |
Chenopodiaceae |
Caryophyllales |
| slender aster |
Symphyotrichum divaricatum |
Asteraceae |
Asterales |
| white panicle aster |
Symphyotrichum lanceolatum |
Asteraceae |
Asterales |
| New England aster |
Symphyotrichum novae-angliae |
Asteraceae |
Asterales |
| common comfrey |
Symphytum officinale |
Boraginaceae |
Lamiales |
| skunkcabbage |
Symplocarpus foetidus |
Araceae |
Arales |
| wild marigold |
Tagetes minuta |
Asteraceae |
Asterales |
| feverfew |
Tanacetum parthenium |
Asteraceae |
Asterales |
| common tansy |
Tanacetum vulgare |
Asteraceae |
Asterales |
| dandelion |
Taraxacum officinale |
Asteraceae |
Asterales |
| American germander |
Teucrium canadense |
Lamiaceae |
Lamiales |
| tall meadow-rue |
Thalictrum pubescens |
Ranunculaceae |
Ranunculales |
| stiff greenthread |
Thelesperma filifolium |
Asteraceae |
Asterales |
| mountain goldenbanner |
Thermopsis montana |
Fabaceae (Leguminosae) |
Fabales |
| prairie thermopsis |
Thermopsis rhombifolia |
Fabaceae (Leguminosae) |
Fabales |
| field pennycress |
Thlaspi arvense |
Brassicaceae |
Capparales |
| hedgeparsley |
Torilis arvensis |
Apiaceae |
Apiales |
| Japanese hedgeparsley |
Torilis japonica |
Apiaceae |
Apiales |
| knotted hedgeparsley |
Torilis nodosa |
Apiaceae |
Apiales |
| white-flowered spiderwort |
Tradescantia fluminensis |
Commelinaceae |
Commelinales |
| common spiderwort |
Tradescantia ohiensis |
Commelinaceae |
Commelinales |
| western salsify |
Tragopogon dubius |
Asteraceae |
Asterales |
| meadow salsify |
Tragopogon lamottei |
Asteraceae |
Asterales |
| common salsify |
Tragopogon porrifolius |
Asteraceae |
Asterales |
| horse purslane |
Trianthema portulacastrum |
Aizoaceae |
Caryophyllales |
| vinegarweed |
Trichostema lanceolatum |
Lamiaceae |
Lamiales |
| coat buttons |
Tridax procumbens |
Asteraceae |
Asterales |
| star-flower |
Trientalis borealis |
Primulaceae |
Primulales |
| rabbitfoot clover |
Trifolium arvense |
Fabaceae (Leguminosae) |
Fabales |
| large hop clover |
Trifolium campestre |
Fabaceae (Leguminosae) |
Fabales |
| rose clover |
Trifolium hirtum |
Fabaceae (Leguminosae) |
Fabales |
| alsike clover |
Trifolium hybridum |
Fabaceae (Leguminosae) |
Fabales |
| crimson clover |
Trifolium incarnatum |
Fabaceae (Leguminosae) |
Fabales |
| red clover |
Trifolium pratense |
Fabaceae (Leguminosae) |
Fabales |
| white clover |
Trifolium repens |
Fabaceae (Leguminosae) |
Fabales |
| subterranean clover |
Trifolium subterraneum |
Fabaceae (Leguminosae) |
Fabales |
| false mayweed |
Tripleurospermum maritimum |
Asteraceae |
Asterales |
| false chamomile |
Tripleurospermum perforatum |
Asteraceae |
Asterales |
| springstar |
Tristagma uniflorum |
Liliaceae |
Liliales |
| coltsfoot |
Tussilago farfara |
Asteraceae |
Asterales |
| common cattail |
Typha latifolia |
Typhaceae |
Typhales |
| Caesarweed |
Urena lobata |
Malvaceae |
Malvales |
| southern nettle |
Urtica chamaedryoides |
Urticaceae |
Urticales |
| stinging nettle |
Urtica dioica |
Urticaceae |
Urticales |
| stinging nettle |
Urtica dioica ssp. holosericea |
Urticaceae |
Urticales |
| burning nettle |
Urtica urens |
Urticaceae |
Urticales |
| leafy bladderwort |
Utricularia foliosa |
Lentibulariaceae |
Scrophulariales |
| humped bladderwort |
Utricularia gibba |
Lentibulariaceae |
Scrophulariales |
| floating bladderwort |
Utricularia inflata |
Lentibulariaceae |
Scrophulariales |
| purple bladderwort |
Utricularia purpurea |
Lentibulariaceae |
Scrophulariales |
| common valerian |
Valeriana officinalis |
Valerianaceae |
Dipsacales |
| beaked cornsalad |
Valerianella radiata |
Valerianaceae |
Dipsacales |
| California false-hellebore |
Veratrum californicum |
Liliaceae |
Liliales |
| green false-hellebore |
Veratrum viride |
Liliaceae |
Liliales |
| moth mullein |
Verbascum blattaria |
Scrophulariaceae |
Scrophulariales |
| common mullein |
Verbascum thapsus |
Scrophulariaceae |
Scrophulariales |
| purplestamen mullein |
Verbascum virgatum |
Scrophulariaceae |
Scrophulariales |
| tall vervain |
Verbena bonariensis |
Verbenaceae |
Lamiales |
| prostrate vervain |
Verbena bracteata |
Verbenaceae |
Lamiales |
| blue vervain |
Verbena hastata |
Verbenaceae |
Lamiales |
| Brazilian vervain |
Verbena incompta |
Verbenaceae |
Lamiales |
| seashore vervain |
Verbena montevidensis |
Verbenaceae |
Lamiales |
| tuberous vervain |
Verbena rigida |
Verbenaceae |
Lamiales |
| hoary vervain |
Verbena stricta |
Verbenaceae |
Lamiales |
| white vervain |
Verbena urticifolia |
Verbenaceae |
Lamiales |
| crownbeard |
Verbesina encelioides |
Asteraceae |
Asterales |
| western ironweed |
Vernonia baldwinii |
Asteraceae |
Asterales |
| tall ironweed |
Vernonia gigantea |
Asteraceae |
Asterales |
| New York ironweed |
Vernonia noveboracensis |
Asteraceae |
Asterales |
| field speedwell |
Veronica agrestis |
Scrophulariaceae |
Scrophulariales |
| water speedwell |
Veronica anagallis-aquatica |
Scrophulariaceae |
Scrophulariales |
| corn speedwell |
Veronica arvensis |
Scrophulariaceae |
Scrophulariales |
| twolobe speedwell |
Veronica biloba |
Scrophulariaceae |
Scrophulariales |
| germander speedwell |
Veronica chamaedrys |
Scrophulariaceae |
Scrophulariales |
| speedwell |
Veronica cinerea |
Scrophulariaceae |
Scrophulariales |
| slender speedwell |
Veronica filiformis |
Scrophulariaceae |
Scrophulariales |
| ivyleaf speedwell |
Veronica hederifolia |
Scrophulariaceae |
Scrophulariales |
| purslane speedwell |
Veronica peregrina |
Scrophulariaceae |
Scrophulariales |
| hairy purslane speedwell |
Veronica peregrina ssp. xalapensis |
Scrophulariaceae |
Scrophulariales |
| Persian speedwell |
Veronica persica |
Scrophulariaceae |
Scrophulariales |
| wayside speedwell |
Veronica polita |
Scrophulariaceae |
Scrophulariales |
| thymeleaf speedwell |
Veronica serpyllifolia |
Scrophulariaceae |
Scrophulariales |
| common vetch |
Vicia sativa |
Fabaceae (Leguminosae) |
Fabales |
| field violet |
Viola arvensis |
Violaceae |
Violales |
| field pansy |
Viola bicolor |
Violaceae |
Violales |
| lanceleaf violet |
Viola lanceolata |
Violaceae |
Violales |
| English violet |
Viola odorata |
Violaceae |
Violales |
| common blue violet |
Viola sororia |
Violaceae |
Violales |
| pansy |
Viola tricolor |
Violaceae |
Violales |
| Asiatic bellflower |
Wahlenbergia marginata |
Campanulaceae |
Campanulales |
| mule-ears |
Wyethia amplexicaulis |
Asteraceae |
Asterales |
| spiny cocklebur |
Xanthium spinosum |
Asteraceae |
Asterales |
| common cocklebur |
Xanthium strumarium |
Asteraceae |
Asterales |
| Asiatic hawksbeard |
Youngia japonica |
Asteraceae |
Asterales |
| horned pondweed |
Zannichellia palustris |
Zannichelliaceae |
Najadales |
| calla lily |
Zantedeschia aethiopica |
Araceae |
Arales |
| mountain deathcamas |
Zigadenus elegans |
Liliaceae |
Liliales |
| grassy deathcamas |
Zigadenus venenosus var. gramineus |
Liliaceae |
Liliales |
