| aeginetia |
Aeginetia spp. |
2 |
| African boxthorn |
Lycium ferocessimum |
1 |
| African boxthorn |
Lycium ferocissimum |
6 |
| African mile-a-minute |
Mikania cordata |
5 |
| African rue |
Peganum harmala |
3 |
| alapataco |
Prosopis alpataco |
4 |
| albardon |
Prosopis sericantha |
3 |
| alectra |
Alectra sessiliflora |
5 |
| alfombrilla |
Drymaria arenarioides |
5 |
| algarobilla |
Prosopis argentina |
5 |
| algarrobilla |
Prosopis humilis |
3 |
| algarrobillo |
Prosopis campestris |
4 |
| algarrobillo |
Prosopis elata |
5 |
| algarrobo paraguayo |
Prosopis hassleri |
3 |
| algarrobo patagonica |
Prosopis denudans |
5 |
| algarrobo patagonica |
Prosopis denudans patagonica |
2 |
| Allegheny blackberry |
Rubus allegheniensis |
3 |
| alligatorweed |
Alternanthera philoxeroides |
1 |
| alpine knapweed |
Centaurea nigrescens |
1 |
| alsike clover |
Trifolium hybridum |
1 |
| American speedwell |
Veronica americana |
1 |
| Amur maple |
Acer ginnala |
8 |
| Amur peppervine |
Ampelopsis brevipedunculata |
1 |
| annual marshelder |
Iva annua |
2 |
| annual sowthistle |
Sonchus oleraceus |
3 |
| apple-of-Peru |
Nicandra physalodes |
8 |
| Argentine screwbean |
Prosopis strombulifera |
4 |
| arrowleaf sida |
Sida rhombifolia |
1 |
| arroyo willow |
Salix lasiolepis |
1 |
| Asian nakedwood |
Colubrina asiatica |
1 |
| Asiatic jasmine |
Trachelospermum asiaticum |
2 |
| Australian dodder |
Cuscuta australis |
2 |
| Australian-pine |
Casuarina equisetifolia |
1 |
| autumn-olive |
Elaeagnus umbellata |
1 |
| Banks melastoma |
Melastoma malabathricum |
12 |
| barbe de tigre |
Prosopis kuntzei |
5 |
| barberry |
Berberis spp. |
1 |
| barbwire Russian-thistle |
Salsola paulsenii |
1 |
| biddy-biddy |
Acaena novae-zelandiae |
1 |
| big chickweed |
Cerastium fontanum ssp. vulgare |
6 |
| big periwinkle |
Vinca major |
3 |
| bigroot morningglory |
Ipomoea pandurata |
6 |
| birdsfoot trefoil |
Lotus corniculatus |
14 |
| birdsrape mustard |
Brassica rapa |
3 |
| bitter mesquite |
Prosopis articulata |
5 |
| bitter sneezeweed |
Helenium amarum |
2 |
| bittercress |
Cardamine spp. |
2 |
| bittersweet nightshade |
Solanum dulcamara |
5 |
| Black dog-strangling vine, black swallowwort |
Cynanchum louiseae |
2 |
| black henbane |
Hyoscyamus niger |
1 |
| black knapweed |
Centaurea nigra |
2 |
| black locust |
Robinia pseudoacacia |
2 |
| black medic |
Medicago lupulina |
4 |
| black mimosa |
Mimosa pigra var. pigra |
2 |
| black nightshade |
Solanum nigrum |
2 |
| blackberry |
Rubus chloocladus |
2 |
| blackberry |
Rubus rosaceus |
2 |
| blackberry |
Rubus vulgaris |
3 |
| blackseed plantain |
Plantago rugelii |
8 |
| bladder campion |
Silene latifolia ssp. alba |
28 |
| blue vervain |
Verbena hastata |
4 |
| boneset |
Eupatorium perfoliatum |
3 |
| bouncingbet |
Saponaria officinalis |
4 |
| boxelder |
Acer negundo |
1 |
| bracted plantain |
Plantago aristata |
2 |
| branched broomrape |
Orobanche ramosa |
3 |
| Brazilian peppertree |
Schinus terebinthifolius |
1 |
| brightblue speedwell |
Veronica serpyllifolia ssp. humifusa |
2 |
| bristly dewberry |
Rubus hispidus |
3 |
| bristly hawksbeard |
Crepis setosa |
1 |
| British yellowhead |
Inula britannica |
6 |
| broadleaf buttonweed |
Spermacoce alata |
5 |
| broadleaf dock |
Rumex obtusifolius |
13 |
| broadleaf glandweed |
Parentucellia latifolia |
1 |
| broadleaf plantain |
Plantago major |
9 |
| broomrape |
Orobanche loricata |
2 |
| brown knapweed |
Centaurea jacea |
3 |
| buckhorn plantain |
Plantago lanceolata |
12 |
| buffalobur |
Solanum rostratum |
4 |
| bull cottonthistle |
Onopordum tauricum |
4 |
| bull mallow |
Malva nicaeensis |
1 |
| bull thistle |
Cirsium vulgare |
8 |
| burcucumber |
Sicyos angulatus |
1 |
| burroweed |
Isocoma veneta |
1 |
| buttercup oxalis |
Oxalis pes-caprae |
2 |
| butterfly milkweed |
Asclepias tuberosa |
11 |
| cactus |
Adromischus spp. |
1 |
| calden |
Prosopis caldenia |
6 |
| California blackberry |
Rubus ursinus |
2 |
| California broomrape |
Orobanche californica |
2 |
| California nettle |
Urtica dioica ssp. gracilis |
2 |
| Callery pear (Bradford pear) |
Pyrus calleryana |
6 |
| camelthorn |
Alhagi maurorum |
1 |
| Canada goldenrod |
Solidago canadensis |
2 |
| Canada thistle |
Cirsium arvense |
31 |
| Cape jasmine |
Gardenia jasminoides |
1 |
| capeweed |
Arctotheca calendula |
8 |
| Carolina geranium |
Geranium carolinianum |
3 |
| carpetweed |
Mollugo verticillata |
1 |
| castorbean |
Ricinus communis |
1 |
| catchweed bedstraw |
Galium aparine |
2 |
| catclaw mimosa |
Mimosa pellita |
2 |
| catnip |
Nepeta cataria |
6 |
| chicory |
Cichorium intybus |
9 |
| Chinese dodder |
Cuscuta chinensis |
2 |
| Chinese parasoltree |
Firmiana simplex |
1 |
| Chinese privet |
Ligustrum sinense |
1 |
| Chinese tallowtree |
Triadica sebifera |
2 |
| churqui |
Prosopis ferox |
4 |
| clammy goosefoot |
Dysphania pumilio |
1 |
| climbing hempweed |
Mikania scandens |
2 |
| clover dodder |
Cuscuta epithymum |
2 |
| cluster dock |
Rumex conglomeratus |
1 |
| clustered broomrape |
Orobanche fasciculata |
2 |
| coat buttons |
Tridax procumbens |
5 |
| coltsfoot |
Tussilago farfara |
1 |
| common burdock |
Arctium minus |
5 |
| common chickweed |
Stellaria media |
4 |
| common chickweed |
Stellaria pallida |
3 |
| common chokecherry |
Prunus virginiana |
5 |
| common cocklebur |
Xanthium strumarium |
7 |
| common cowparsnip |
Heracleum maximum |
1 |
| common crupina |
Crupina vulgaris |
8 |
| common elderberry |
Sambucus nigra ssp. canadensis |
6 |
| common evening-primrose |
Oenothera biennis |
3 |
| common groundsel |
Senecio vulgaris |
6 |
| common mallow |
Malva neglecta |
17 |
| common milkweed |
Asclepias syriaca |
8 |
| common mouse-ear chickweed |
Cerastium fontanum |
1 |
| common mullein |
Verbascum thapsus |
9 |
| common pokeweed |
Phytolacca americana |
8 |
| common purslane |
Portulaca oleracea |
21 |
| common ragweed |
Ambrosia artemisiifolia |
11 |
| common St. Johnswort |
Hypericum perforatum |
6 |
| common sunflower |
Helianthus annuus |
5 |
| common teasel |
Dipsacus fullonum |
4 |
| common waterhemp |
Amaranthus rudis |
3 |
| common yarrow |
Achillea millefolium |
8 |
| corn buttercup |
Ranunculus arvensis |
2 |
| corn speedwell |
Veronica arvensis |
1 |
| cornflower |
Centaurea cyanus |
1 |
| Cornish mallow |
Lavatera cretica |
3 |
| cowpea witchweed |
Striga gesnerioides |
2 |
| creeping buttercup |
Ranunculus repens |
5 |
| creeping croftonweed |
Ageratina riparia |
2 |
| crenate broomrape |
Orobanche crenata |
2 |
| cressleaf groundsel |
Packera glabella |
3 |
| croftonweed |
Ageratina adenophora |
4 |
| crownvetch |
Securigera varia |
9 |
| crupina |
Crupina crupinastrum |
3 |
| curly dock |
Rumex crispus |
13 |
| cusqui |
Prosopis calingastana |
2 |
| cutleaf goosefoot |
Chenopodium multifidum |
1 |
| cutleaf nightshade |
Solanum triflorum |
1 |
| cutleaf teasel |
Dipsacus laciniatus |
2 |
| Dalmatian toadflax |
Linaria dalmatica |
1 |
| dalmatian toadflax |
Linaria dalmatica ssp. dalmatica |
1 |
| dandelion |
Taraxacum officinale |
12 |
| dandelion |
Taraxacum spp. |
5 |
| desert broomrape |
Orobanche cooperi |
2 |
| devils beggarticks |
Bidens frondosa |
3 |
| diffuse knapweed |
Centaurea diffusa |
2 |
| dill |
Anethum graveolens |
2 |
| dodder |
Cuscuta hyalina |
2 |
| dodder |
Cuscuta spp. |
3 |
| dog rose |
Rosa canina |
1 |
| doubleclaw |
Proboscidea parviflora |
2 |
| dwarf honeysuckle |
Lonicera xylosteum |
6 |
| dwarf morning-glory |
Convolvulus tricolor |
2 |
| Dyer's woad |
Isatis tinctoria |
4 |
| eastern poison-ivy |
Toxicodendron radicans |
10 |
| eclipta |
Eclipta prostrata |
1 |
| Egyptian broomrape |
Orobanche aegyptiaca |
3 |
| Egyptian Thorn |
Acacia nilotica |
2 |
| elmleaf blackberry |
Rubus ulmifolius |
3 |
| English ivy |
Hedera helix |
1 |
| European alder |
Alnus glutinosa |
7 |
| European barberry |
Berberis vulgaris |
1 |
| European buckthorn |
Rhamnus cathartica |
4 |
| European mistletoe |
Viscum album |
1 |
| European stinging nettle |
Urtica dioica ssp. dioica |
6 |
| evening-primrose |
Oenothera spp. |
1 |
| false buttonweed |
Spermacoce articularis |
1 |
| false chamomile |
Tripleurospermum perforatum |
3 |
| fennel |
Foeniculum vulgare |
1 |
| fernleaf yarrow |
Achillea filipendulina |
2 |
| field bindweed |
Convolvulus arvensis |
22 |
| field dodder |
Cuscuta pentagona |
3 |
| field madder |
Sherardia arvensis |
1 |
| field pansy |
Viola bicolor |
2 |
| field pennycress |
Thlaspi arvense |
8 |
| field pepperweed |
Lepidium campestre |
2 |
| field violet |
Viola arvensis |
1 |
| flat-top goldentop |
Euthamia graminifolia var. graminifolia |
1 |
| flax dodder |
Cuscuta epilinum |
2 |
| floating pennywort |
Hydrocotyle ranunculoides |
1 |
| foxglove |
Digitalis purpurea |
2 |
| fringed willowherb |
Epilobium ciliatum ssp. ciliatum |
3 |
| Fuller's teasel |
Dipsacus sativus |
1 |
| garlic mustard |
Alliaria petiolata |
18 |
| Geraldton carnation weed |
Euphorbia terracina |
6 |
| germander speedwell |
Veronica chamaedrys |
1 |
| giant hogweed |
Heracleum mantegazzianum |
10 |
| giant ironweed |
Vernonia gigantea gigantea |
3 |
| giant mealie witchweed |
Striga forbesii |
2 |
| giant ragweed |
Ambrosia trifida |
17 |
| giant sensitiveplant |
Mimosa diplotricha |
6 |
| goatsbeard |
Tragopogon spp. |
4 |
| goatsrue |
Galega officinalis |
6 |
| goldenrod |
Solidago spp. |
3 |
| great blue lobelia |
Lobelia siphilitica |
2 |
| ground ivy |
Glechoma hederacea |
15 |
| groundcherries |
Physalis spp. |
2 |
| hairy cat's ear |
Hypochaeris radicata |
4 |
| hairy catchfly |
Silene dichotoma |
2 |
| hairy fleabane |
Conyza bonariensis |
1 |
| hairy galinsoga |
Galinsoga ciliata |
2 |
| hairy galinsoga |
Galinsoga quadriradiata |
6 |
| hairy nightshade |
Solanum physalifolium |
2 |
| hairy nightshade |
Solanum villosum |
2 |
| hairy purslane speedwell |
Veronica peregrina ssp. xalapensis |
2 |
| hairy vetch |
Vicia villosa |
3 |
| hairy white oldfield aster |
Symphyotrichum pilosum var. pilosum |
2 |
| hairy whitetop |
Lepidium appelianum |
5 |
| halogeton |
Halogeton glomeratus |
1 |
| hawkweeds |
Hieracium spp. |
12 |
| healall |
Prunella vulgaris |
7 |
| hedge bindweed |
Calystegia sepium |
14 |
| hedge mustard |
Sisymbrium officinale |
4 |
| hemp dogbane |
Apocynum cannabinum |
13 |
| hemp sesbania |
Sesbania exaltata |
4 |
| henbit |
Lamium amplexicaule |
11 |
| Himalaya blackberry |
Rubus armeniacus |
2 |
| hoary cress |
Lepidium draba |
13 |
| honey mesquite |
Prosopis glandulosa |
1 |
| honeyvine swallowwort |
Cynanchum laeve |
16 |
| horse thistle |
Onopordum acaulon |
4 |
| horsenettle |
Solanum carolinense |
2 |
| horseweed |
Conyza canadensis |
12 |
| Hybrid barberry |
Berberis × ottawensis |
1 |
| hyssop loosestrife |
Lythrum hyssopifolium |
1 |
| ice cream bean |
Inga edulis |
1 |
| Illyrian cottonthistle |
Onopordum illyricum |
3 |
| Indiantobacco |
Lobelia inflata |
1 |
| indigobush |
Amorpha fruticosa |
4 |
| ivy broomrape |
Orobanche hederae |
2 |
| ivyleaf morningglory |
Ipomoea hederacea |
14 |
| Jamaican crabgrass |
Cuscuta horizontalis |
1 |
| Jamaican nightshade |
Solanum jamaicense |
2 |
| Japanese barberry |
Berberis thunbergii |
11 |
| Japanese bindweed |
Calystegia hederacea |
2 |
| Japanese dodder |
Cuscuta japonica |
3 |
| Japanese honeysuckle |
Lonicera japonica |
12 |
| Japanese knotweed |
Fallopia japonica |
11 |
| Jerusalem artichoke |
Helianthus tuberosus |
7 |
| Jerusalem-oak goosefoot |
Chenopodium botrys |
1 |
| jimsonweed |
Datura stramonium |
12 |
| joe pye weed |
Eupatoriadelphus spp. |
4 |
| juniper mistletoe |
Phoradendron juniperinum |
1 |
| Kerner's dock |
Rumex kerneri |
1 |
| kiawe |
Prosopis pallida |
4 |
| knapweeds |
Centaurea spp. |
2 |
| knotweed |
Polygonum spp. |
2 |
| Korean lespedeza |
Kummerowia stipulacea |
3 |
| kudzu |
Pueraria montana var. lobata |
5 |
| ladysthumb |
Persicaria maculosa |
1 |
| Lamarck's bedstraw |
Galium divaricatum |
2 |
| lambsquarters |
Chenopodium album |
8 |
| large gray willow |
Salix atrocinerea |
8 |
| large gray willow |
Salix cinerea |
6 |
| largeleaf lantana |
Lantana camara |
1 |
| largeseed dodder |
Cuscuta indecora |
3 |
| lata |
Prosopis torquata |
6 |
| lawn burweed |
Soliva sessilis |
1 |
| leafy spurge |
Euphorbia esula |
11 |
| limnophila |
Limnophila sessiliflora |
4 |
| little mallow |
Malva parviflora |
2 |
| low amaranth |
Amaranthus deflexus |
1 |
| Madagascar ragwort |
Senecio madagascariensis |
5 |
| Malta starthistle |
Centaurea melitensis |
1 |
| marshpepper smartweed |
Polygonum hydropiper |
2 |
| mastuerzo |
Prosopis reptans reptans |
2 |
| meadow hawkweed |
Hieracium caespitosum |
2 |
| Mediterranean saltwort |
Salsola vermiculata |
8 |
| melaleuca |
Melaleuca ericifolia |
1 |
| melaleuca |
Melaleuca hypericifolia |
1 |
| melaleuca |
Melaleuca quinquenervia |
2 |
| mesquite |
Prosopis burkartii |
3 |
| mesquite |
Prosopis castellanosii |
3 |
| mesquite |
Prosopis fiebrigii |
5 |
| mesquite |
Prosopis rojasiana |
5 |
| mesquite |
Prosopis ruizlealii |
6 |
| Mexican brassbuttons |
Cotula mexicana |
1 |
| Mexican fireweed |
Kochia scoparia |
4 |
| mexicantea |
Dysphania ambrosioides |
1 |
| mile-a-minute |
Mikania micrantha |
4 |
| mile-a-minute weed |
Persicaria perfoliata |
17 |
| miramar weed |
Hygrophila polysperma |
4 |
| Molucca raspberry |
Rubus moluccanus |
5 |
| morningglory |
Ipomoea spp. |
1 |
| Morrow's honeysuckle |
Lonicera morrowii |
11 |
| moss vervain |
Glandularia pulchella |
1 |
| moth mullein |
Verbascum blattaria |
9 |
| motherwort |
Leonurus cardiaca |
9 |
| mugwort |
Artemisia vulgaris |
6 |
| mulberryweed |
Fatoua villosa |
2 |
| mullein nightshade |
Solanum donianum |
1 |
| multiflora rose |
Rosa multiflora |
6 |
| musk mallow |
Malva moschata |
4 |
| musk thistle |
Carduus nutans |
6 |
| myrtle spurge |
Euphorbia myrsinites |
1 |
| nightblooming cactus |
Hylocereus undatus |
1 |
| nightshade |
Solanum spp. |
1 |
| nodding broomrape |
Orobanche cernua |
2 |
| North African knapweed |
Centaurea diluta |
1 |
| Norway maple |
Acer platanoides |
1 |
| opium poppy |
Papaver somniferum |
1 |
| orange hawkweed |
Hieracium aurantiacum |
6 |
| orbicular whitetop |
Lepidium chalepense |
6 |
| oriental bittersweet |
Celastrus orbiculatus |
9 |
| ornamental jewelweed |
Impatiens glandulifera |
2 |
| oval-leaf knotweed |
Polygonum arenastrum |
1 |
| oxeye daisy |
Leucanthemum vulgare |
8 |
| Pacific mistletoe |
Phoradendron villosum |
1 |
| paleseed plantain |
Plantago virginica |
2 |
| Palmer amaranth |
Amaranthus palmeri |
1 |
| palo de hierro |
Prosopis palmeri |
3 |
| panicle willowherb |
Epilobium brachycarpum |
1 |
| parasol whitetop |
Doellingeria umbellata var. umbellata |
3 |
| partridgepea |
Chamaecrista fasciculata |
2 |
| passionflower |
Passiflora edulis |
2 |
| Pennsylvania bittercress |
Cardamine pensylvanica |
2 |
| Pennsylvania smartweed |
Polygonum pensylvanicum |
12 |
| pennyroyal |
Mentha pulegium |
1 |
| perennial pepperweed |
Lepidium latifolium |
6 |
| perennial sowthistle |
Sonchus arvensis |
16 |
| perilla mint |
Perilla frutescens |
2 |
| Peruvian peppertree |
Schinus molle |
4 |
| pigweed |
Amaranthus spp. |
1 |
| pineapple-weed |
Matricaria discoidea |
3 |
| pitaya |
Acanthocereus spp. |
1 |
| pitted morningglory |
Ipomoea lacunosa |
3 |
| poison-hemlock |
Conium maculatum |
13 |
| potato |
Solanum tuberosum |
1 |
| Powell amaranth |
Amaranthus powellii |
4 |
| prickly lettuce |
Lactuca serriola |
12 |
| prickly sida |
Sida spinosa |
16 |
| prostrate knotweed |
Polygonum aviculare |
1 |
| prostrate pigweed |
Amaranthus blitoides |
5 |
| pterocarpus |
Pterocarpus spp. |
3 |
| puncturevine |
Tribulus terrestris |
7 |
| purple deadnettle |
Lamium purpureum |
6 |
| purple loosestrife |
Lythrum salicaria |
16 |
| purple moonflower |
Ipomoea turbinata |
6 |
| purple starthistle |
Centaurea calcitrapa |
1 |
| purple toadflax |
Linaria purpurea |
1 |
| purple witchweed |
Striga hermonthica |
2 |
| Queen Anne's lace, wild carrot |
Daucus carota |
8 |
| red clover |
Trifolium pratense |
1 |
| red melastome |
Melastoma sanguineum |
3 |
| red soda apple |
Solanum capsicoides |
3 |
| red sorrel |
Rumex acetosella |
14 |
| red willow |
Salix laevigata |
1 |
| redmaids |
Calandrinia ciliata |
1 |
| redroot pigweed |
Amaranthus retroflexus |
9 |
| rough cinquefoil |
Potentilla norvegica |
6 |
| roundleaf geranium |
Geranium rotundifolium |
1 |
| royal larkspur |
Delphinium variegatum ssp. variegatum |
1 |
| rush skeletonweed |
Chondrilla juncea |
1 |
| Russian knapweed |
Rhaponticum repens |
6 |
| Russian thistle |
Salsola kali |
2 |
| Russian-thistle |
Salsola tragus |
5 |
| safflower |
Carthamus tinctorius |
2 |
| salmonberry |
Rubus spectabilis |
2 |
| saltbush |
Atriplex spp. |
8 |
| saltcedar |
Tamarix ramosissima |
4 |
| scarlet pimpernel |
Lysimachia arvensis |
1 |
| Scotch broom |
Cytisus scoparius |
1 |
| Scotch thistle |
Onopordum acanthium |
3 |
| screwbean mesquite |
Prosopis pubescens |
1 |
| Seaside rose |
Rosa rugosa |
19 |
| seepwillow |
Baccharis salicifolia |
2 |
| sericea lespedeza |
Lespedeza cuneata |
3 |
| sessile joyweed |
Alternanthera sessilis |
3 |
| sharppoint fluvellin |
Kickxia elatine |
1 |
| shepherd's-purse |
Capsella bursa-pastoris |
9 |
| shining spurge |
Euphorbia lucida |
1 |
| shortfruit stork's bill |
Erodium brachycarpum |
2 |
| shrine jimmyweed |
Isocoma tenuisecta |
1 |
| shrubby blackberry |
Rubus plicatus |
2 |
| Siberian elm |
Ulmus pumila |
1 |
| sicklepod |
Senna obtusifolia |
2 |
| silverleaf nightshade |
Solanum elaeagnifolium |
5 |
| slender false buttonweed |
Spermacoce tenuior |
1 |
| slender speedwell |
Veronica filiformis |
2 |
| slenderflower thistle |
Carduus tenuiflorus |
1 |
| small broomrape |
Orobanche minor |
3 |
| smallflower buttercup |
Ranunculus abortivus |
2 |
| smallseed alfalfa dodder |
Cuscuta approximata |
2 |
| smooth bedstraw |
Cruciata laevipes |
3 |
| smooth bedstraw |
Galium mollugo |
14 |
| smooth groundcherry |
Physalis longifolia var. subglabrata |
4 |
| smooth hawksbeard |
Crepis capillaris |
1 |
| smooth pigweed |
Amaranthus hybridus |
6 |
| smooth sumac |
Rhus glabra |
6 |
| South African ragwort |
Senecio inaequidens |
5 |
| speedwell |
Veronica spp. |
3 |
| spiny amaranth |
Amaranthus spinosus |
2 |
| spiny emex |
Emex spinosa |
1 |
| spiny plumeless thistle |
Carduus acanthoides |
3 |
| spiny sowthistle |
Sonchus asper |
5 |
| spotted joe pye weed |
Eupatoriadelphus maculatus |
4 |
| spotted knapweed |
Centaurea stoebe |
1 |
| spotted knapweed |
Centaurea stoebe ssp. micranthos |
15 |
| spurge |
Euphorbia humistrata |
3 |
| spurred anoda |
Anoda cristata |
1 |
| squarrose knapweed |
Centaurea virgata |
2 |
| St. Andrew's cross |
Hypericum hypericoides |
1 |
| St. John's bread |
Ceratonia siliqua |
3 |
| St. Johnswort |
Hypericum spp. |
1 |
| St. Thomas bean |
Entada phaseoloides |
2 |
| staghorn sumac |
Rhus hirta |
3 |
| staghorn sumac |
Rhus typhina |
6 |
| stinging nettle |
Urtica dioica ssp. holosericea |
1 |
| stinking chamomile |
Anthemis cotula |
2 |
| sulfur cinquefoil |
Potentilla recta |
4 |
| sulphur knapweed |
Centaurea sulphurea |
1 |
| swamp dodder |
Cuscuta gronovii |
3 |
| swamp milkweed |
Asclepias incarnata |
8 |
| swamp morningglory |
Ipomoea aquatica |
4 |
| swamp smartweed |
Persicaria hydropiperoides |
2 |
| sweet granadilla |
Passiflora ligularis |
3 |
| Syrian beancaper |
Zygophyllum fabago |
3 |
| Syrian mesquite |
Prosopis farcta |
6 |
| tall buttercup |
Ranunculus acris |
6 |
| tall ironweed |
Vernonia gigantea |
3 |
| tall lettuce |
Lactuca canadensis |
5 |
| tall morningglory |
Ipomoea purpurea |
4 |
| tamarisk |
Tamarix spp. |
6 |
| tansymustard |
Descurainia spp. |
2 |
| Tatarian honeysuckle |
Lonicera tatarica |
4 |
| teasel |
Dipsacus spp. |
1 |
| three-cornered jack |
Emex australis |
1 |
| threebract loosestrife |
Lythrum tribracteatum |
1 |
| ticktrefoils |
Desmodium spp. |
2 |
| toadflax |
Linaria spp. |
3 |
| toothed dock |
Rumex dentatus |
2 |
| toothed spurge |
Euphorbia dentata |
2 |
| toothpick ammi |
Ammi visnaga |
1 |
| tornillo |
Prosopis reptans |
1 |
| tornillo |
Prosopis reptans var. cinerascens |
4 |
| tree-of-heaven |
Ailanthus altissima |
3 |
| tropic croton |
Croton glandulosus var. septentrionalis |
1 |
| tropical soda apple |
Solanum viarum |
8 |
| true forget-me-not |
Myosotis scorpioides |
1 |
| trumpetcreeper |
Campsis radicans |
3 |
| tumble pigweed |
Amaranthus albus |
4 |
| turkeyberry |
Solanum torvum |
5 |
| turnipweed |
Rapistrum rugosum |
1 |
| twolobe speedwell |
Veronica biloba |
1 |
| velvet mesquite |
Prosopis velutina |
1 |
| velvetleaf |
Abutilon theophrasti |
16 |
| Venice mallow |
Hibiscus trionum |
3 |
| vinal |
Prosopis ruscifolia |
4 |
| violet |
Viola spp. |
6 |
| Virginia copperleaf |
Acalypha virginica |
3 |
| Virginia pepperweed |
Lepidium virginicum |
2 |
| Virginia-creeper |
Parthenocissus quinquefolia |
3 |
| wall bedstraw |
Galium parisiense |
2 |
| water chestnut |
Trapa spp. |
1 |
| water knotweed |
Polygonum amphibium |
6 |
| wavyleaf thistle |
Cirsium undulatum |
1 |
| West Indian nightshade |
Solanum ptycanthum |
12 |
| West Indian raspberry |
Rubus rosifolius |
2 |
| western salsify |
Tragopogon dubius |
8 |
| wetland nightshade |
Solanum tampicense |
5 |
| white clover |
Trifolium repens |
1 |
| white heath aster |
Symphyotrichum ericoides var. ericoides |
4 |
| white mulberry |
Morus alba |
7 |
| white snakeroot |
Ageratina altissima |
1 |
| white vervain |
Verbena urticifolia |
3 |
| whitestem filaree |
Erodium moschatum |
1 |
| wild buckwheat |
Fallopia convolvulus |
6 |
| wild carrot |
Daucus carota ssp. carota |
6 |
| wild celery |
Cyclospermum leptophyllum |
1 |
| wild chervil |
Anthriscus sylvestris |
2 |
| wild cucumber |
Echinocystis lobata |
3 |
| wild four-o'clock |
Mirabilis nyctaginea |
3 |
| wild mustard |
Sinapis arvensis |
4 |
| wild mustard |
Sinapis arvensis ssp. arvensis |
3 |
| wild parsnip |
Pastinaca sativa |
22 |
| wild radish |
Raphanus raphanistrum |
4 |
| wild safflower |
Carthamus oxyacanthus |
4 |
| wine grape |
Vitis vinifera |
4 |
| wine raspberry |
Rubus phoenicolasius |
2 |
| winged burning bush |
Euonymus alatus |
2 |
| witchweed |
Striga asiatica |
5 |
| witchweed |
Striga aspera |
1 |
| witchweed |
Striga euphrasioides |
2 |
| witchweed |
Striga spp. |
1 |
| wood whitlowgrass |
Draba nemorosa |
1 |
| ye gu |
Aeginetia indica |
3 |
| yellow hawkweed |
Hieracium fendleri |
2 |
| yellow rocket |
Barbarea vulgaris |
4 |
| yellow starthistle |
Centaurea solstitialis |
11 |
| yellow toadflax |
Linaria vulgaris |
5 |
| yellow unicorn-plant |
Ibicella lutea |
7 |
| yellow wall bedstraw |
Galium murale |
2 |
| yellow woodsorrel |
Oxalis stricta |
9 |
| yellowspine thistle |
Cirsium ochrocentrum |
1 |
| yerba de hierro |
Melasma melampyroides |
4 |
