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Natural Resources: Weeds

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Subject Scientific Name Images
African boxthorn Lycium ferocissimum 5
African mile-a-minute Mikania cordata 2
African redhead agama Agama agama africana 1
African rue Peganum harmala 3
air-potato Dioscorea bulbifera 1
alapataco Prosopis alpataco 1
albardon Prosopis sericantha 1
alectra Alectra sessiliflora 1
alfalfa Medicago spp. 1
alfombrilla Drymaria arenarioides 2
algarobilla Prosopis argentina 3
algarrobilla Prosopis humilis 2
algarrobillo Prosopis campestris 3
algarrobillo Prosopis elata 2
algarrobo paraguayo Prosopis hassleri 2
algarrobo patagonica Prosopis denudans 1
alkali mallow Malvella leprosa 3
alligatorweed Alternanthera philoxeroides 1
alpine knapweed Centaurea nigrescens 2
alsike clover Trifolium hybridum 1
American black nightshade Solanum americanum 2
American bugleweed Lycopus americanus 1
American speedwell Veronica americana 1
Amur honeysuckle Lonicera maackii 8
Amur maple Acer ginnala 1
Amur peppervine Ampelopsis brevipedunculata 8
anchored waterhyacinth Eichhornia azurea 6
animated oat Avena sterilis ssp. ludoviciana 1
annual bluegrass Poa annua 10
annual bursage Ambrosia acanthicarpa 1
annual false-brome Brachypodium distachyon 3
annual fleabane Erigeron annuus 1
annual marshelder Iva annua 2
annual sowthistle Sonchus oleraceus 1
annual wormwood Artemisia annua 1
annual yellow sweetclover Melilotus indicus 2
apple mint Mentha suaveolens 1
apple-of-Peru Nicandra physalodes 3
Arabian schismus Schismus arabicus 3
Argentine screwbean Prosopis strombulifera 1
arrowleaf sida Sida rhombifolia 2
arrowleaved monochoria Monochoria hastata 5
arroyo willow Salix lasiolepis 1
Asian nakedwood Colubrina asiatica 5
Asiatic dayflower Commelina communis 4
Athel tamarisk Tamarix aphylla 2
Australian chess Bromus arenarius 2
Australian fingergrass Chloris truncata 3
Australian-pine Casuarina equisetifolia 1
autumn-olive Elaeagnus umbellata 11
Banks melastoma Melastoma malabathricum 3
barb goatgrass Aegilops triuncialis 4
barbe de tigre Prosopis kuntzei 2
barnyardgrass Echinochloa crus-galli 8
beach vitex Vitex rotundifolia 3
Bell's honeysuckle Lonicera x bella 6
bellardia Bellardia trixago 4
Benghal dayflower Commelina benghalensis 11
bermudagrass Cynodon dactylon 3
biddy-biddy Acaena novae-zelandiae 2
biennial wormwood Artemisia biennis 2
big chickweed Cerastium fontanum ssp. vulgare 3
big periwinkle Vinca major 2
big quakinggrass Briza maxima 3
bindweed Convolvulus spp. 1
birdsfoot trefoil Lotus corniculatus 3
birdsrape mustard Brassica rapa 3
bishops goutweed Aegopodium podagraria 7
bitter mesquite Prosopis articulata 1
bittersweet nightshade Solanum dulcamara 9
Black dog-strangling vine, black swallowwort Cynanchum louiseae 12
black henbane Hyoscyamus niger 4
black knapweed Centaurea nigra 2
black locust Robinia pseudoacacia 8
black medic Medicago lupulina 4
black mimosa Mimosa pigra var. pigra 1
black nightshade Solanum nigrum 1
blackseed plantain Plantago rugelii 2
bladder campion Silene latifolia ssp. alba 3
blue lettuce Lactuca tatarica var. pulchella 1
blue panicum Panicum antidotale 3
border privet Ligustrum obtusifolium 4
brahminy blind snake Ramphotyphlops braminus 1
branched broomrape Orobanche ramosa 1
Brazilian peppertree Schinus terebinthifolius 2
Brazilian waterweed Egeria densa 1
brightblue speedwell Veronica serpyllifolia ssp. humifusa 4
bristly foxtail Setaria verticillata 4
bristly hawksbeard Crepis setosa 2
bristly mallow Modiola caroliniana 3
British yellowhead Inula britannica 9
broadleaf dock Rumex obtusifolius 5
broadleaf filaree Erodium botrys 3
broadleaf glandweed Parentucellia latifolia 1
broadleaf plantain Plantago major 7
brown knapweed Centaurea jacea 3
brown-beard rice Oryza rufipogon 1
buckhorn plantain Plantago coronopus 3
buckhorn plantain Plantago lanceolata 5
buffalobur Solanum rostratum 7
buffelgrass Pennisetum ciliare 3
bulbous bluegrass Poa bulbosa 5
bulbous canarygrass Phalaris aquatica 3
bull cottonthistle Onopordum tauricum 3
bull mallow Malva nicaeensis 4
bull thistle Cirsium vulgare 10
bur beggarticks Bidens tripartita 1
bur chervil Anthriscus caucalis 1
burning nettle Urtica urens 3
buttercup oxalis Oxalis pes-caprae 3
butterfly milkweed Asclepias tuberosa 2
butterflybush Buddleja davidii 1
butterflybush Buddleja spp. 1
Caesarweed Urena lobata 1
calden Prosopis caldenia 4
California blackberry Rubus ursinus 4
California broomrape Orobanche californica 1
California cordgrass Spartina foliosa 2
California false-hellebore Veratrum californicum 3
California nettle Urtica dioica ssp. gracilis 2
California privet Ligustrum ovalifolium 1
Canada bluegrass Poa compressa 9
Canada goldenrod Solidago canadensis 2
Canada thistle Cirsium arvense 14
Canary Island date palm Phoenix canariensis 1
canarygrass Phalaris canariensis 3
Cape jasmine Gardenia jasminoides 1
Cape-tulip Moraea knersvlaktensis 2
Cape-tulip Moraea pallida 2
Cape-tulip Moraea schlechteri 3
capeweed Arctotheca calendula 9
Carolina geranium Geranium carolinianum 4
carpetgrass Axonopus fissifolius 1
carpetweed Mollugo verticillata 4
carrotwood Cupaniopsis anacardioides 5
catchweed bedstraw Galium aparine 4
catclaw mimosa Mimosa pellita 1
catnip Nepeta cataria 2
cattail millet Setaria glauca 6
cheatgrass Bromus tectorum 19
cherry plum Prunus cerasifera 3
chicory Cichorium intybus 5
Chilean rabbitsfoot grass Polypogon australis 1
chinaberry Melia azedarach 12
Chinese parasoltree Firmiana simplex 1
Chinese privet Ligustrum sinense 2
Chinese silvergrass Miscanthus sinensis 9
Chinese tallowtree Triadica sebifera 6
Chinese thorn-apple Datura quercifolia 4
Chinese wisteria Wisteria sinensis 1
chocolate vine Akebia quinata 6
churqui Prosopis ferox 4
cinnabar moth Tyria jacobaeae 1
cluster dock Rumex conglomeratus 3
coat buttons Tridax procumbens 2
cockspur grass Echinochloa spp. 1
cogongrass Imperata cylindrica 22
colonial bentgrass Agrostis capillaris 1
coltsfoot Tussilago farfara 10
common burdock Arctium minus 2
common cattail Typha latifolia 2
common chickweed Stellaria media 4
common cocklebur Xanthium strumarium 3
common cordgrass Spartina anglica 2
common crupina Crupina vulgaris 2
common evening-primrose Oenothera biennis 1
common frogbit Hydrocharis morsus-ranae 2
common groundsel Senecio vulgaris 3
common lespedeza Kummerowia striata 1
common mallow Malva neglecta 7
common mediterraneangrass Schismus barbatus 4
common milkweed Asclepias syriaca 1
common mullein Verbascum thapsus 5
common periwinkle Vinca minor 9
common pokeweed Phytolacca americana 4
common purslane Portulaca oleracea 14
common ragweed Ambrosia artemisiifolia 3
common reed Phragmites australis 14
common sunflower Helianthus annuus 4
common teasel Dipsacus fullonum 6
common valerian Valeriana officinalis 7
common velvetgrass Holcus lanatus 3
common yarrow Achillea millefolium 6
coral ardisia Ardisia crenata 3
cordgrass Spartina spp. 2
corn buttercup Ranunculus arvensis 2
corn chamomile Anthemis arvensis 1
corn speedwell Veronica arvensis 3
corn spurry Spergula arvensis 1
cornflower Centaurea cyanus 3
Cornish mallow Lavatera cretica 5
Coulter's horseweed Laennecia coulteri 2
coyote willow Salix exigua 1
crabgrass Digitaria spp. 1
creeping bentgrass Agrostis stolonifera 3
creeping buttercup Ranunculus repens 9
creeping woodsorrel Oxalis corniculata 4
cressleaf groundsel Packera glabella 3
crested bunias Bunias erucago 1
crested dogtailgrass Cynosurus cristatus 1
crested latesummer mint Elsholtzia ciliata 6
crimson fountaingrass Pennisetum setaceum 6
crimson woodsorrel Oxalis incarnata 1
croftonweed Ageratina adenophora 3
crowfootgrass Dactyloctenium aegyptium 2
crownvetch Securigera varia 2
crupina Crupina crupinastrum 1
crystalline iceplant Mesembryanthemum crystallinum 1
cultivated knotweed Persicaria wallichii 3
cup rosinweed Silphium perfoliatum 6
curly dock Rumex crispus 4
curlyleaf pondweed Potamogeton crispus 3
cutleaf blackberry Rubus laciniatus 2
cutleaf evening-primrose Oenothera laciniata 3
cutleaf geranium Geranium dissectum 4
cutleaf nightshade Solanum triflorum 3
cutleaf teasel Dipsacus laciniatus 3
cypress spurge Euphorbia cyparissias 5
dallisgrass Paspalum dilatatum 4
Dalmatian toadflax Linaria dalmatica 9
dalmatian toadflax Linaria dalmatica ssp. dalmatica 6
damesrocket Hesperis matronalis 5
dandelion Taraxacum officinale 7
dense mistletoe Phoradendron densum 1
denseflower cordgrass Spartina densiflora 4
desert lovegrass Eragrostis pectinacea var. miserrima 4
devil's-claw Proboscidea louisianica 4
devils beggarticks Bidens frondosa 4
diffuse knapweed Centaurea diffusa 2
dog rose Rosa canina 1
dog-strangling vine, European swallowwort Cynanchum rossicum 10
dotted smartweed Persicaria punctata 1
doubleclaw Proboscidea parviflora 2
Douglas iris Iris douglasiana 4
dovefoot geranium Geranium molle 4
drug fumitory Fumaria officinalis 3
Drummond's beeblossom Gaura drummondii 4
duck-lettuce Ottelia alismoides 8
ducksalad Heteranthera limosa 2
dwarf honeysuckle Lonicera xylosteum 5
earleaf nightshade Solanum mauritianum 4
early watergrass Echinochloa oryzoides 4
eben tree Dacryodes edulis 1
edible fig Ficus carica 3
Egyptian Thorn Acacia nilotica 2
elmleaf blackberry Rubus ulmifolius 2
English hawthorn Crataegus monogyna 2
English holly Ilex aquifolium 1
English ivy Hedera helix 9
English violet Viola odorata 1
European alder Alnus glutinosa 6
European barberry Berberis vulgaris 7
European beachgrass Ammophila arenaria 4
European buckthorn Rhamnus cathartica 9
European mistletoe Viscum album 2
European pepperwort Marsilea quadrifolia 2
European privet Ligustrum vulgare 10
European waterstarwort Callitriche stagnalis 6
fall panicum Panicum dichotomiflorum 7
false chamomile Tripleurospermum perforatum 2
fanwort Cabomba caroliniana 2
feather fingergrass Chloris virgata 3
feathertop Pennisetum villosum 3
fennel Foeniculum vulgare 1
fiddleleaf dock Rumex pulcher 2
field bindweed Convolvulus arvensis 5
field brome Bromus arvensis 3
field madder Sherardia arvensis 3
field pansy Viola bicolor 2
field pennycress Thlaspi arvense 5
field pepperweed Lepidium campestre 2
field sandbur Cenchrus spinifex 3
fireweed Chamerion angustifolium 2
flowering rush Butomus umbellatus 8
fowl bluegrass Poa palustris 1
foxglove Digitalis purpurea 4
foxtail barley Hordeum jubatum 3
foxtail millet Setaria italica 2
foxtail pricklegrass Crypsis alopecuroides 3
Fremont's deathcamas Zigadenus fremontii 2
fringed willowherb Epilobium ciliatum ssp. ciliatum 5
fringed willowherb Epilobium ciliatum ssp. watsonii 1
fumitory Fumaria spp. 1
garden loosestrife Lysimachia vulgaris 4
garlic mustard Alliaria petiolata 19
Geraldton carnation weed Euphorbia terracina 4
germander speedwell Veronica chamaedrys 1
giant foxtail Setaria faberi 9
giant hogweed Heracleum mantegazzianum 14
giant mealie witchweed Striga forbesii 1
giant ragweed Ambrosia trifida 2
giant reed Arundo donax 8
giant salvinia Salvinia molesta 2
giant sensitiveplant Mimosa diplotricha 3
glossy buckthorn Frangula alnus 8
glossy privet Ligustrum lucidum 3
goatsrue Galega officinalis 3
Goodding's willow Salix gooddingii 1
goosegrass Eleusine indica 10
great blue lobelia Lobelia siphilitica 3
greater ammi Ammi majus 1
greater celandine Chelidonium majus 6
green foxtail Setaria viridis 8
ground ivy Glechoma hederacea 6
hairy beggarticks Bidens pilosa 1
hairy buttercup Ranunculus sardous 3
hairy catchfly Silene dichotoma 2
hairy fleabane Conyza bonariensis 3
hairy galinsoga Galinsoga ciliata 3
hairy galinsoga Galinsoga quadriradiata 2
hairy nightshade Solanum physalifolium 4
hairy nightshade Solanum villosum 2
hairy purslane speedwell Veronica peregrina ssp. xalapensis 3
hairy vetch Vicia villosa 2
hairy willowherb Epilobium hirsutum 7
hardgrass Sclerochloa dura 3
hedge bindweed Calystegia sepium 5
hedgehog dogtailgrass Cynosurus echinatus 4
hedgeparsley Torilis arvensis 3
hemp dogbane Apocynum cannabinum 7
hemp sesbania Sesbania exaltata 5
henbit Lamium amplexicaule 6
herb-robert Geranium robertianum 3
high mallow Malva sylvestris 4
Himalaya blackberry Rubus armeniacus 2
hoary cress Lepidium draba 1
honeyvine swallowwort Cynanchum laeve 5
hood canarygrass Phalaris paradoxa 3
Hooker's evening primrose Oenothera elata ssp. hookeri 4
horehound Marrubium peregrinum 1
horehound Marrubium spp. 1
horse purslane Trianthema portulacastrum 3
horse thistle Onopordum acaulon 4
horsenettle Solanum carolinense 9
horseweed Conyza canadensis 9
hurricane 1
hydrilla Hydrilla verticillata 2
hyssop loosestrife Lythrum hyssopifolium 2
ice cream bean Inga edulis 1
Illyrian cottonthistle Onopordum illyricum 3
Indian tobacco Nicotiana quadrivalvis 3
Indiantobacco Lobelia inflata 1
indigobush Amorpha fruticosa 4
Italian plumeless thistle Carduus pycnocephalus 2
Italian ryegrass Festuca perennis 4
ivyleaf morningglory Ipomoea hederacea 9
Japanese barberry Berberis thunbergii 15
Japanese climbing fern Lygodium japonicum 1
Japanese dodder Cuscuta japonica 6
Japanese hedgeparsley Torilis japonica 7
Japanese honeysuckle Lonicera japonica 13
Japanese hop Humulus japonicus 5
Japanese knotweed Fallopia japonica 17
Japanese privet Ligustrum japonicum 1
Japanese red pine Pinus densiflora 1
Japanese sedge Carex kobomugi 5
Japanese spiraea Spiraea japonica 4
Japanese stiltgrass Microstegium vimineum 15
Jerusalem artichoke Helianthus tuberosus 3
jetbead Rhodotypos scandens 2
jimsonweed Datura stramonium 17
johnsongrass Sorghum halepense 9
jointed goatgrass Aegilops cylindrica 7
junglerice Echinochloa colona 1
juniper mistletoe Phoradendron juniperinum 2
Kentucky bluegrass Poa pratensis 7
Kerner's dock Rumex kerneri 5
kiawe Prosopis pallida 2
kikuyugrass Pennisetum clandestinum 4
knotgrass Paspalum distichum 4
knotted hedgeparsley Torilis nodosa 2
knotweed Polygonum spp. 5
Korean lespedeza Kummerowia stipulacea 5
kudzu Pueraria montana var. lobata 5
kudzu Pueraria spp. 1
ladysthumb Persicaria maculosa 8
Lamarck's bedstraw Galium divaricatum 4
lambsquarters Chenopodium album 5
large crabgrass Digitaria sanguinalis 4
lata Prosopis torquata 5
late barnyard grass Echinochloa oryzicola 3
leafy spurge Euphorbia esula 13
Lehmann lovegrass Eragrostis lehmanniana 4
leporinum barley Hordeum murinum ssp. leporinum 3
lesser celandine, fig buttercup Ficaria verna 6
limnophila Limnophila sessiliflora 1
little lovegrass Eragrostis minor 3
little mallow Malva parviflora 5
little quakinggrass Briza minor 3
littleseed canarygrass Phalaris minor 4
longflowered veldtgrass Ehrharta longiflora 1
longroot smartweed Polygonum amphibium var. emersum 1
longspine sandbur Cenchrus longispinus 7
low amaranth Amaranthus deflexus 1
Madagascar ragwort Senecio madagascariensis 5
manyflower tobacco Nicotiana acuminata var. multiflora 4
marsh dayflower Murdannia keisak 1
marshpepper smartweed Polygonum hydropiper 3
mastuerzo Prosopis reptans reptans 2
meadow campion Silene flos-cuculi 4
meadow deathcamas Zigadenus venenosus var. venenosus 2
meadow foxtail Alopecurus pratensis 3
Mediterranean gecko Hemidactylus turcicus 3
Mediterranean lovegrass Eragrostis barrelieri 5
Mediterranean sage Salvia aethiopis 4
Mediterranean saltwort Salsola vermiculata 4
medusahead Taeniatherum caput-medusae 4
melaleuca Melaleuca quinquenervia 6
mesquite Prosopis castellanosii 3
mesquite Prosopis fiebrigii 2
mesquite Prosopis rojasiana 5
mesquite Prosopis ruizlealii 3
Mexican fireweed Kochia scoparia 5
Mexican lovegrass Eragrostis mexicana ssp. virescens 4
Mexican whorled milkweed Asclepias fascicularis 1
mexicantea Dysphania ambrosioides 1
Mikania micrantha Survey 52
mile-a-minute Mikania micrantha 2
mile-a-minute weed Persicaria perfoliata 8
milkflower cotoneaster Cotoneaster coriaceus 2
miner's lettuce Claytonia perfoliata 4
miramar weed Hygrophila polysperma 1
Molucca raspberry Rubus moluccanus 1
moneywort Lysimachia nummularia 1
Monk Parakeet Myiopsitta monachus 1
monkeygrass Liriope muscari 1
monochoria Monochoria vaginalis 4
Moroccan toadflax Linaria maroccana 4
Morrow's honeysuckle Lonicera morrowii 8
moss vervain Glandularia pulchella 3
moth mullein Verbascum blattaria 8
motherwort Leonurus cardiaca 3
mugwort Artemisia vulgaris 2
mullein Verbascum spp. 1
multiflora rose Rosa multiflora 10
musk thistle Carduus nutans 11
narrowleaf bittercress Cardamine impatiens 7
narrowleaf firethorn Pyracantha angustifolia 1
New Zealand geranium Geranium retrorsum 4
ngaio tree Myoporum laetum 4
nimblewill Muhlenbergia schreberi 4
nit grass Gastridium phleoides 3
nodding broomrape Orobanche cernua 1
North African knapweed Centaurea diluta 1
Norway maple Acer platanoides 5
oakforest woodrush Luzula luzuloides 6
oat Avena sativa 2
old world climbing fern Lygodium microphyllum 7
Olympic mullein Verbascum olympicum 1
onerow yellowcress Nasturtium microphyllum 3
onionweed Asphodelus fistulosus 6
opium poppy Papaver somniferum 1
orange cotoneaster Cotoneaster franchetii 1
orangeberry nightshade Solanum lanceolatum 5
orchardgrass Dactylis glomerata 6
oriental bittersweet Celastrus orbiculatus 22
Oriental lady's thumb Persicaria longiseta 4
ornamental jewelweed Impatiens glandulifera 6
osage-orange Maclura pomifera 3
oval-leaf knotweed Polygonum arenastrum 2
Pacific bentgrass Agrostis avenacea 3
Pacific mistletoe Phoradendron villosum 1
Pacific poison-oak Toxicodendron diversilobum 1
Pacific rush Juncus effusus var. pacificus 1
pale smartweed Persicaria lapathifolia 2
paleseed plantain Plantago virginica 3
Palmer amaranth Amaranthus palmeri 6
palo de hierro Prosopis palmeri 1
panic veldtgrass Ehrharta erecta 3
panicle willowherb Epilobium brachycarpum 3
pansy Viola tricolor 2
paper-mulberry Broussonetia papyrifera 5
parrot feather milfoil Myriophyllum aquaticum 4
partridgepea Chamaecrista fasciculata 2
Pennsylvania bittercress Cardamine pensylvanica 2
Pennsylvania blackberry Rubus pensilvanicus 1
Pennsylvania smartweed Polygonum pensylvanicum 7
pennyroyal Mentha pulegium 4
perennial pepperweed Lepidium latifolium 5
perennial ryegrass Lolium perenne 7
perennial sowthistle Sonchus arvensis 3
perennial veldtgrass Ehrharta calycina 4
perilla mint Perilla frutescens 34
Persian speedwell Veronica persica 2
Peruvian peppertree Schinus molle 2
pineapple-weed Matricaria discoidea 4
pitted morningglory Ipomoea lacunosa 3
poison ryegrass Lolium temulentum 5
poison-hemlock Conium maculatum 6
poverty brome Bromus sterilis 2
Powell amaranth Amaranthus powellii 5
prairie cupgrass Eriochloa contracta 5
prickly lettuce Lactuca serriola 3
prickly sida Sida spinosa 10
princesstree Paulownia tomentosa 4
privet Ligustrum spp. 1
prostrate globe-amaranth Gomphrena serrata 2
prostrate knotweed Polygonum aviculare 2
prostrate pigweed Amaranthus blitoides 5
pterocarpus Pterocarpus spp. 3
punagrass Achnatherum brachychaetum 2
puncturevine Tribulus terrestris 9
purple deadnettle Lamium purpureum 7
purple loosestrife Lythrum salicaria 15
purple nutsedge Cyperus rotundus 3
purple pampasgrass Cortaderia jubata 5
purple robust Setaria viridis var. robustapurpurea 2
purple toadflax Linaria purpurea 3
purple witchweed Striga hermonthica 1
purplestamen mullein Verbascum virgatum 5
quackgrass Elymus repens 5
Queen Anne's lace, wild carrot Daucus carota 6
rabbitfoot polypogon Polypogon monspeliensis 4
rattlesnake brome Bromus briziformis 3
rattlesnake plant Calathea crotalifera 5
ravennagrass Ripidium ravennae 4
red clover Trifolium pratense 5
red larkspur Delphinium nudicaule 1
red sorrel Rumex acetosella 17
red willow Salix laevigata 3
redflower gum Eucalyptus ficifolia 1
redmaids Calandrinia ciliata 5
redroot pigweed Amaranthus retroflexus 11
redstem filaree Erodium cicutarium 2
reed Phragmites spp. 2
reed canarygrass Phalaris arundinacea 11
reed mannagrass Glyceria maxima 2
rescuegrass Bromus catharticus 4
rhodesgrass Chloris gayana 1
rigid ryegrass Lolium rigidum 1
ripgut brome Bromus diandrus 2
Rocky Mountain iris Iris missouriensis 2
rough barnyardgrass Echinochloa muricata 3
rough cinquefoil Potentilla norvegica 4
roughstalk bluegrass Poa trivialis 1
roundleaf geranium Geranium rotundifolium 2
royal larkspur Delphinium variegatum ssp. variegatum 1
ruscus Ruscus spp. 1
rush skeletonweed Chondrilla juncea 3
Russian knapweed Rhaponticum repens 1
Russian-olive Elaeagnus angustifolia 3
Russian-thistle Salsola tragus 1
rye brome Bromus secalinus 3
sacred bamboo Nandina domestica 1
sacred thorn-apple Datura wrightii 2
safflower Carthamus tinctorius 1
Sakhalin knotweed Fallopia sachalinensis 7
saltbush Atriplex fera 2
saltbush Atriplex spp. 3
saltcedar Tamarix ramosissima 3
saltgrass Distichlis spicata 4
saltmeadow cordgrass Spartina patens 1
San Bernardino larkspur Delphinium parryi 1
scarlet gaura Gaura coccinea 3
scarlet pimpernel Lysimachia arvensis 7
Scotch broom Cytisus scoparius 5
Scotch thistle Onopordum acanthium 8
seashore vervain Verbena montevidensis 4
Seaside rose Rosa rugosa 9
seepwillow Baccharis salicifolia 2
sericea lespedeza Lespedeza cuneata 5
shallow-wort Cynanchum spp. 1
sharpleaf groundcherry Physalis acutifolia 2
sharppoint fluvellin Kickxia elatine 5
shepherd's-purse Capsella bursa-pastoris 7
shoebutton ardisia Ardisia elliptica 1
shortfruit stork's bill Erodium brachycarpum 6
showy evening-primrose Oenothera speciosa 2
showy milkweed Asclepias speciosa 1
shrubby St. Johnswort Hypericum prolificum 4
sicklepod Senna obtusifolia 3
silver hairgrass Aira caryophyllea 4
silverleaf cotoneaster Cotoneaster pannosus 2
silverleaf nightshade Solanum elaeagnifolium 4
silversheath knotweed Polygonum argyrocoleon 3
skunk-vine Paederia foetida 3
skunkbush sumac Rhus trilobata 2
slender cinquefoil Potentilla gracilis 3
slender false garlic Nothoscordum gracile 4
slender oat Avena barbata 3
slender snakecotton Froelichia gracilis 6
slender speedwell Veronica filiformis 2
slenderflower thistle Carduus tenuiflorus 2
small broomrape Orobanche minor 1
small carpetgrass, joint-head grass Arthraxon hispidus 11
smallflower buttercup Ranunculus abortivus 2
smallflower tamarisk Tamarix parviflora 3
smilograss Piptatherum miliaceum 4
smooth barley Hordeum murinum ssp. glaucum 1
smooth bedstraw Galium mollugo 2
smooth brome Bromus inermis 7
smooth cordgrass Spartina alterniflora 2
smooth crabgrass Digitaria ischaemum 8
smooth groundcherry Physalis longifolia var. subglabrata 2
smooth pigweed Amaranthus hybridus 4
smutgrass Sporobolus indicus 4
soft brome Bromus hordeaceus 2
sorghum Sorghum bicolor 9
sorghum-almum Sorghum almum 1
South African ragwort Senecio inaequidens 5
southern sandbur Cenchrus echinatus 1
southwestern cupgrass Eriochloa acuminata 4
spearmint Mentha spicata 1
spiny amaranth Amaranthus spinosus 4
spiny plumeless thistle Carduus acanthoides 4
spiny sowthistle Sonchus asper 3
spinyfruit buttercup Ranunculus muricatus 3
spotted knapweed Centaurea stoebe 3
spotted knapweed Centaurea stoebe ssp. micranthos 17
spotted water hemlock Cicuta maculata var. angustifolia 2
spreading pellitory Parietaria judaica 2
spreading rush Juncus patens 2
spurge Euphorbia humistrata 3
squarrose knapweed Centaurea virgata 2
squirreltail fescue Vulpia bromoides 2
St. Augustinegrass Stenotaphrum secundatum 1
St. Thomas bean Entada phaseoloides 2
staghorn sumac Rhus typhina 2
star-of-Bethlehem Ornithogalum umbellatum 3
sterile oat Avena sterilis 3
stinging nettle Urtica dioica ssp. holosericea 4
stinkgrass Eragrostis cilianensis 4
stinking chamomile Anthemis cotula 2
stork's bill Erodium spp. 1
sulfur cinquefoil Potentilla recta 5
sulphur knapweed Centaurea sulphurea 2
swamp morningglory Ipomoea aquatica 1
swamp pricklegrass Crypsis schoenoides 2
swamp smartweed Persicaria hydropiperoides 2
sweet granadilla Passiflora ligularis 3
sweet vernalgrass Anthoxanthum odoratum 4
sweetbriar rose Rosa eglanteria 4
Sycamore maple Acer pseudoplatanus 9
Syrian beancaper Zygophyllum fabago 3
Syrian mesquite Prosopis farcta 5
Szechuan pepper corns Zanthoxylum spp. 1
Taiwanese photinia Photinia serratifolia 2
tall fescue Festuca arundinacea 10
tall fleabane Conyza floribunda 2
tall ironweed Vernonia gigantea 5
tall morningglory Ipomoea purpurea 4
tall vervain Verbena bonariensis 4
tall waterhemp Amaranthus tuberculatus 2
tamarisk Tamarix spp. 1
tanglehead Heteropogon contortus 4
tansy ragwort Senecio jacobaea 6
tansymustard Descurainia spp. 2
Tasmanian bluegum Eucalyptus globulus 2
Tatarian honeysuckle Lonicera tatarica 6
tawny daylily Hemerocallis fulva 4
Texas filaree Erodium texanum 1
thistle Cirsium spp. 2
three-cornered leek Allium triquetrum 2
threebract loosestrife Lythrum tribracteatum 2
threespike goosegrass Eleusine tristachya 3
Thunberg's geranium Geranium thunbergii 4
timothy Phleum pratense 4
toad rush Juncus bufonius 4
tomatillo groundcherry Physalis philadelphica 3
toothed dock Rumex dentatus 3
toothed spurge Euphorbia dentata 2
toothpick ammi Ammi visnaga 1
tornillo Prosopis reptans 1
tree tobacco Nicotiana glauca 3
tree-of-heaven Ailanthus altissima 16
trifoliate orange Poncirus trifoliata 1
tropical soda apple Solanum viarum 1
true forget-me-not Myosotis scorpioides 5
tumble pigweed Amaranthus albus 8
turkeyberry Solanum torvum 5
turnipweed Rapistrum rugosum 7
two-leaf Cape-tulip Moraea miniata 2
unknown leafminer 1
Uruguayan pampas grass Cortaderia selloana 3
vaseygrass Paspalum urvillei 2
velvetleaf Abutilon theophrasti 17
Venice mallow Hibiscus trionum 13
venus-comb Scandix pecten-veneris 1
viburnum Viburnum spp. 1
vinal Prosopis ruscifolia 1
vinegarweed Trichostema lanceolatum 4
Virginia copperleaf Acalypha virginica 2
Virginia pepperweed Lepidium virginicum 2
wall bedstraw Galium parisiense 4
Washington fan palm Washingtonia robusta 2
water chestnut Trapa spp. 1
water speedwell Veronica anagallis-aquatica 4
water-bent Polypogon viridis 2
water-chestnut Trapa natans 3
watercress Nasturtium officinale 3
waterhyacinth Eichhornia crassipes 7
waterlettuce Pistia stratiotes 1
wavyleaf gaura Gaura sinuata 4
wavyleaf thistle Cirsium undulatum 1
waxy mannagrass Glyceria declinata 9
weedy brome Bromus alopecuros 3
weeping lovegrass Eragrostis curvula 4
West Indian nightshade Solanum ptycanthum 4
western ragweed Ambrosia psilostachya 1
western salsify Tragopogon dubius 2
western thimbleberry Rubus parviflorus 2
western waterhemlock Cicuta douglasii 1
wetland nightshade Solanum tampicense 2
white bladderflower Araujia sericifera 1
white clover Trifolium repens 4
white garlic Allium neapolitanum 2
white horehound Marrubium vulgare 2
white mulberry Morus alba 2
white poplar Populus alba 9
white ramping fumitory Fumaria capreolata 1
whitebark raspberry Rubus leucodermis 3
whitegrass Leersia virginica 1
whitestem filaree Erodium moschatum 4
wild buckwheat Fallopia convolvulus 10
wild chervil Anthriscus sylvestris 6
wild cucumber Echinocystis lobata 3
wild four-o'clock Mirabilis nyctaginea 2
wild garlic Allium vineale 9
wild mustard Sinapis arvensis ssp. arvensis 4
wild oat Avena fatua 9
wild parsnip Pastinaca sativa 6
wild radish Raphanus raphanistrum 3
wild safflower Carthamus oxyacanthus 2
wild-proso millet Panicum miliaceum 2
willowleaf lettuce Lactuca saligna 2
windowbox woodsorrel Oxalis rubra 2
wine raspberry Rubus phoenicolasius 8
winged burning bush Euonymus alatus 12
winter creeper Euonymus fortunei var. radicans 1
wirestem muhly Muhlenbergia frondosa 2
witchgrass Panicum capillare 7
witchweed Striga asiatica 3
witchweed Striga euphrasioides 1
wood whitlowgrass Draba nemorosa 4
woolly cupgrass Eriochloa villosa 7
woolly distaff thistle Carthamus lanatus 2
yellow bedstraw Galium verum 2
yellow bluestem Bothriochloa ischaemum var. songarica 6
yellow chamomile Anthemis tinctoria 1
yellow floatingheart Nymphoides peltata 1
yellow foxtail Setaria pumila 2
yellow glandweed Parentucellia viscosa 3
yellow hornpoppy Glaucium flavum 4
yellow nutsedge Cyperus esculentus 10
yellow rocket Barbarea vulgaris 5
yellow sweetclover Melilotus officinalis 4
yellow toadflax Linaria vulgaris 9
yellow wall bedstraw Galium murale 4
yellow woodsorrel Oxalis stricta 4
yellowflag iris Iris pseudacorus 12
yellowspine thistle Cirsium ochrocentrum 1
zigzag larkspur Delphinium patens 1

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