| almond |
Prunus dulcis |
4 |
| almond-leaved willow |
Salix triandra |
11 |
| Alpine clematis |
Clematis alpina |
37 |
| alpine currant |
Ribes alpinum |
2 |
| American burnweed |
Erechtites hieraciifolius |
10 |
| American sycamore |
Platanus occidentalis |
21 |
| annual fleabane |
Erigeron annuus |
7 |
| annual sowthistle |
Sonchus oleraceus |
4 |
| apple |
Malus domestica |
8 |
| ash |
Fraxinus angustifolia ssp. oxycarpa |
35 |
| aspen/poplar |
Populus spp. |
1 |
| autumn-olive |
Elaeagnus umbellata |
16 |
| birthwort |
Aristolochia clematitis |
1 |
| bishops goutweed |
Aegopodium podagraria |
3 |
| bitter fleabane |
Erigeron acris |
2 |
| black cherry |
Prunus serotina |
24 |
| black henbane |
Hyoscyamus niger |
7 |
| black horehound |
Ballota nigra |
4 |
| black locust |
Robinia pseudoacacia |
43 |
| black walnut |
Juglans nigra |
9 |
| blackberry |
Rubus saxatilis |
4 |
| blackthorn |
Prunus spinosa |
31 |
| bladder senna |
Colutea arborescens |
20 |
| bladdernut |
Staphylea pinnata |
13 |
| blanketflower |
Gaillardia aristata |
4 |
| bloodtwig dogwood |
Cornus sanguinea |
32 |
| bloody geranium |
Geranium sanguineum |
1 |
| blueweed |
Echium vulgare |
3 |
| Bohemian knotweed |
Fallopia x bohemica |
17 |
| Boston ivy |
Parthenocissus tricuspidata |
9 |
| boxelder |
Acer negundo |
17 |
| bristly locust |
Robinia hispida |
28 |
| broadleaf dock |
Rumex obtusifolius |
2 |
| broadleaf plantain |
Plantago major |
3 |
| broom |
Cytisus nigricans |
9 |
| broom |
Genista germanica |
7 |
| buckeye |
Aesculus spp. |
4 |
| Bukhara fleeceflower |
Polygonum baldschuanicum |
1 |
| bull thistle |
Cirsium vulgare |
4 |
| Burkwood's viburnum |
Viburnum x burkwoodii |
3 |
| burning nettle |
Urtica urens |
10 |
| bushy wallflower |
Erysimum repandum |
1 |
| butterflybush |
Buddleja davidii |
2 |
| butternut |
Juglans cinerea |
1 |
| California privet |
Ligustrum ovalifolium |
10 |
| Canada goldenrod |
Solidago canadensis |
18 |
| Canada thistle |
Cirsium arvense |
5 |
| cane fruit (blackberry, raspberry) |
Rubus spp. |
24 |
| Carolina poplar |
Populus x canadensis |
1 |
| carrot bur parsley |
Caucalis platycarpos |
3 |
| catchweed |
Asperugo procumbens |
7 |
| catchweed bedstraw |
Galium aparine |
8 |
| checkertree |
Sorbus torminalis |
33 |
| cherry laurel |
Prunus laurocerasus |
8 |
| chervil |
Anthriscus cerefolium |
12 |
| chess-apple |
Sorbus aria |
36 |
| chicory |
Cichorium intybus |
3 |
| Chinese wisteria |
Wisteria sinensis |
10 |
| clammy locust |
Robinia viscosa |
10 |
| colchis ivy |
Hedera colchica |
4 |
| coltsfoot |
Tussilago farfara |
7 |
| common chickweed |
Stellaria pallida |
4 |
| common cocklebur |
Xanthium strumarium |
6 |
| common elderberry |
Sambucus nigra |
5 |
| common evening-primrose |
Oenothera biennis |
1 |
| common filbert |
Corylus avellana |
3 |
| common groundsel |
Senecio vulgaris |
6 |
| common hackberry |
Celtis occidentalis |
9 |
| common hop |
Humulus lupulus |
12 |
| common horse chestnut |
Aesculus hippocastanum |
12 |
| common lilac |
Syringa vulgaris |
21 |
| common milkweed |
Asclepias syriaca |
5 |
| common periwinkle |
Vinca minor |
16 |
| common pokeweed |
Phytolacca americana |
28 |
| common purslane |
Portulaca oleracea |
1 |
| common snowberry |
Symphoricarpos albus |
2 |
| common St. Johnswort |
Hypericum perforatum |
1 |
| common sunflower |
Helianthus annuus |
2 |
| common tansy |
Tanacetum vulgare |
1 |
| corn poppy |
Papaver rhoeas |
5 |
| Cornelian cherry dogwood |
Cornus mas |
13 |
| corpse-bindweed |
Fallopia dumetorum |
9 |
| cotoneaster |
Cotoneaster integerrimus |
33 |
| cotoneaster |
Cotoneaster melanocarpus |
35 |
| cotoneaster |
Cotoneaster nebrodensis |
31 |
| crack willow |
Salix fragilis |
83 |
| creeping waterprimrose |
Ludwigia peploides |
5 |
| crownvetch |
Securigera elegans |
4 |
| cuckoo bittercress |
Cardamine pratensis |
1 |
| cultivated currant |
Ribes rubrum |
19 |
| currant |
Ribes spp. |
2 |
| cutleaf teasel |
Dipsacus laciniatus |
8 |
| cypress spurge |
Euphorbia cyparissias |
3 |
| dandelion |
Taraxacum officinale |
13 |
| Daphne |
Daphne cneorum ssp. arbusculoides |
29 |
| dog rose |
Rosa canina |
17 |
| downy birch |
Betula pubescens |
6 |
| downy oak |
Quercus pubescens |
28 |
| dropwort |
Filipendula vulgaris |
2 |
| dwarf elderberry |
Sambucus ebulus |
17 |
| dwarf honeysuckle |
Lonicera xylosteum |
23 |
| dwarf Russian almond |
Prunus tenella |
11 |
| eared willow |
Salix aurita |
5 |
| eastern groundsel |
Senecio vernalis |
2 |
| edible fig |
Ficus carica |
26 |
| Edmonton hempnettle |
Galeopsis speciosa |
2 |
| Elaeagnus willow |
Salix elaeagnos |
14 |
| elm |
Ulmus spp. |
3 |
| eltrot |
Heracleum sphondylium |
1 |
| English elm |
Ulmus procera |
13 |
| English hawthorn |
Crataegus monogyna |
16 |
| English ivy |
Hedera helix |
20 |
| English oak |
Quercus robur |
69 |
| English walnut |
Juglans regia |
34 |
| Eurasian watermilfoil |
Myriophyllum spicatum |
1 |
| European alder |
Alnus glutinosa |
33 |
| European ash |
Fraxinus excelsior |
21 |
| European aspen |
Populus tremula |
27 |
| European barberry |
Berberis vulgaris |
1 |
| European beech |
Fagus sylvatica |
85 |
| European bird cherry |
Prunus padus |
20 |
| European black currant |
Ribes nigrum |
13 |
| European blackberry |
Rubus fruticosus |
10 |
| European buckthorn |
Rhamnus cathartica |
11 |
| European chestnut |
Castanea sativa |
18 |
| European crabapple |
Malus sylvestris |
17 |
| European cranberrybush |
Viburnum opulus |
27 |
| European dewberry |
Rubus caesius |
11 |
| European gooseberry |
Ribes uva-crispa |
7 |
| European hornbeam |
Carpinus betulus |
47 |
| European mistletoe variety |
Viscum album ssp. austriacum |
32 |
| European mountain-ash |
Sorbus aucuparia |
2 |
| European privet |
Ligustrum vulgare |
15 |
| European smoketree |
Cotinus coggygria |
6 |
| European spindletree |
Euonymus europaeus |
8 |
| European stinging nettle |
Urtica dioica ssp. dioica |
5 |
| European turkey oak |
Quercus cerris |
24 |
| European white birch |
Betula pendula |
23 |
| European white elm |
Ulmus laevis |
36 |
| evergreen clematis |
Clematis vitalba |
14 |
| false spiraea |
Sorbaria sorbifolia |
5 |
| fanwort |
Cabomba caroliniana |
2 |
| February daphne |
Daphne mezereum |
19 |
| field bindweed |
Convolvulus arvensis |
3 |
| field eryngo |
Eryngium campestre |
5 |
| field pennycress |
Thlaspi arvense |
10 |
| figleaved goosefoot |
Chenopodium ficifolium |
4 |
| finger speedwell |
Veronica triphyllos |
1 |
| flixweed |
Descurainia sophia |
1 |
| floating pennywort |
Hydrocotyle ranunculoides |
11 |
| floating waterprimrose |
Ludwigia repens |
8 |
| flowering ash |
Fraxinus ornus |
52 |
| flowering quince |
Chaenomeles speciosa |
1 |
| French rose |
Rosa gallica |
6 |
| fumitory |
Fumaria schleicheri |
9 |
| garden loosestrife |
Lysimachia vulgaris |
1 |
| garlic mustard |
Alliaria petiolata |
8 |
| germander speedwell |
Veronica chamaedrys |
4 |
| giant goldenrod |
Solidago gigantea |
15 |
| giant hogweed |
Heracleum mantegazzianum |
21 |
| glossy buckthorn |
Frangula alnus |
12 |
| goat willow |
Salix caprea |
22 |
| golden currant |
Ribes aureum |
4 |
| grape |
Vitis spp. |
7 |
| grape woodbine |
Parthenocissus vitacea |
10 |
| gray alder |
Alnus incana |
3 |
| great burdock |
Arctium lappa |
2 |
| greater celandine |
Chelidonium majus |
6 |
| green alder |
Alnus viridis |
52 |
| green ash |
Fraxinus pennsylvanica |
31 |
| greenflower pepperweed |
Lepidium densiflorum |
10 |
| ground ivy |
Glechoma hederacea |
4 |
| hairy buttercup |
Ranunculus sardous |
2 |
| heather |
Calluna vulgaris |
1 |
| hedge bindweed |
Calystegia sepium |
5 |
| hedge maple |
Acer campestre |
30 |
| hedge mustard |
Sisymbrium officinale |
4 |
| hedgerow geranium |
Geranium pyrenaicum |
2 |
| heliopsis |
Heliopsis spp. |
2 |
| hempnettle |
Galeopsis pubescens |
2 |
| hempnettle |
Galeopsis spp. |
3 |
| henbit |
Lamium amplexicaule |
4 |
| herb bennet |
Geum urbanum |
5 |
| herb-robert |
Geranium robertianum |
4 |
| hippocrepis |
Hippocrepis emerus |
5 |
| hoary cress |
Lepidium draba |
1 |
| honeylocust |
Gleditsia triacanthos |
14 |
| horehound |
Marrubium peregrinum |
1 |
| horseweed |
Conyza canadensis |
3 |
| houndstongue |
Cynoglossum officinale |
6 |
| humped bladderwort |
Utricularia gibba |
3 |
| indigobush |
Amorpha fruticosa |
21 |
| ivyleaf speedwell |
Veronica hederifolia |
3 |
| Japanese flowering cherry |
Prunus serrulata |
12 |
| Japanese floweringquince |
Chaenomeles japonica |
24 |
| Japanese maple |
Acer palmatum |
2 |
| Japanese pagoda tree |
Styphnolobium japonicum |
5 |
| Japanese skimmia |
Skimmia japonica |
10 |
| Jerusalem artichoke |
Helianthus tuberosus |
6 |
| jimsonweed |
Datura stramonium |
2 |
| Kenilworth ivy |
Cymbalaria muralis |
3 |
| Kentucky coffeetree |
Gymnocladus dioicus |
11 |
| lambsquarters |
Chenopodium album |
9 |
| large gray willow |
Salix cinerea |
10 |
| largeleaf linden |
Tilia platyphyllos |
20 |
| leafy spurge |
Euphorbia esula |
4 |
| leatherleaf mahonia |
Mahonia bealei |
7 |
| lesser celandine, fig buttercup |
Ficaria verna |
1 |
| little cottonrose |
Logfia minima |
2 |
| littleleaf linden |
Tilia cordata |
2 |
| Lombardy poplar |
Populus nigra |
7 |
| London planetree |
Platanus hybrida |
6 |
| magnolia |
Magnolia spp. |
8 |
| Mahaleb cherry |
Prunus mahaleb |
49 |
| marsh-pepper smartweed |
Persicaria hydropiper |
1 |
| matrimony vine |
Lycium barbarum |
2 |
| mayweed |
Tripleurospermum maritimum ssp. inodorum |
9 |
| medlar |
Mespilus germanica |
2 |
| Mexican oak leaf |
Shinnersia rivularis |
7 |
| mexicantea |
Dysphania ambrosioides |
8 |
| Michaelmas daisy |
Aster sedifolius |
1 |
| mimosa |
Albizia julibrissin |
8 |
| mistletoe |
Loranthus europaeus |
41 |
| mistletoe |
Viscum album ssp. abietis |
42 |
| mistletoe |
Viscum album ssp. album |
45 |
| mountain ash |
Sorbus × balatonica |
1 |
| mountain ash |
Sorbus spp. |
13 |
| mountain ash |
Sorbus umbellata |
20 |
| mountain grape |
Mahonia aquifolium |
14 |
| mouse-ear cress |
Arabidopsis thaliana |
14 |
| moutan peony |
Paeonia suffruticosa |
15 |
| mugwort |
Artemisia vulgaris |
1 |
| nodding beggarticks |
Bidens cernua |
4 |
| northern red oak |
Quercus rubra |
4 |
| Norway maple |
Acer platanoides |
25 |
| Oriental hornbeam |
Carpinus orientalis |
12 |
| Oriental knight's-spur |
Consolida orientalis |
2 |
| ornamental jewelweed |
Impatiens glandulifera |
8 |
| osier |
Salix viminalis |
9 |
| paper-mulberry |
Broussonetia papyrifera |
4 |
| pear |
Pyrus austriaca |
19 |
| perennial goosefoot |
Chenopodium bonus-henricus |
6 |
| Persian ironwood |
Parrotia persica |
2 |
| pin oak |
Quercus palustris |
4 |
| poison-hemlock |
Conium maculatum |
5 |
| princesstree |
Paulownia tomentosa |
10 |
| prostrate knotweed |
Polygonum aviculare |
5 |
| purple deadnettle |
Lamium purpureum |
2 |
| purpleosier willow |
Salix purpurea |
9 |
| quince |
Cydonia oblonga |
6 |
| red amaranth |
Amaranthus cruentus |
3 |
| red elderberry |
Sambucus racemosa |
36 |
| red horsechestnut |
Aesculus x carnea |
27 |
| redroot pigweed |
Amaranthus retroflexus |
12 |
| redstem filaree |
Erodium cicutarium |
1 |
| redvein dock |
Rumex sanguineus |
6 |
| rock buckthorn |
Rhamnus saxatilis |
3 |
| rock fumewort |
Pseudofumaria lutea |
12 |
| rose of Sharon |
Hibiscus syriacus |
4 |
| rough chervil |
Chaerophyllum temulum |
10 |
| roundleaf toothcup |
Rotala rotundifolia |
20 |
| royal knight's-spur |
Consolida regalis |
3 |
| rush skeletonweed |
Chondrilla juncea |
3 |
| Russian-olive |
Elaeagnus angustifolia |
7 |
| sand plantain |
Plantago arenaria |
3 |
| scarlet firethorn |
Pyracantha coccinea |
5 |
| Scotch broom |
Cytisus scoparius |
12 |
| Scotch thistle |
Onopordum acanthium |
4 |
| Scottish rose |
Rosa spinosissima |
8 |
| sea buckthorn |
Hippophae rhamnoides |
6 |
| seaport goosefoot |
Chenopodium opulifolium |
10 |
| Senegal tea plant |
Gymnocoronis spilanthoides |
17 |
| servicetree |
Sorbus domestica |
47 |
| sessile oak |
Quercus petraea |
29 |
| shagbark hickory |
Carya ovata |
21 |
| shepherd's-purse |
Capsella bursa-pastoris |
8 |
| shining geranium |
Geranium lucidum |
1 |
| showy forsythia |
Forsythia x intermedia |
36 |
| Siberian elm |
Ulmus pumila |
6 |
| Siberian peashrub |
Caragana arborescens |
1 |
| silver linden |
Tilia tomentosa |
1 |
| silverweed cinquefoil |
Argentina anserina |
3 |
| Simon poplar |
Populus simonii |
2 |
| slender Russian thistle |
Salsola collina |
4 |
| small flower touch-me-not |
Impatiens parviflora |
6 |
| smallflower galinsoga |
Galinsoga parviflora |
3 |
| smooth hawthorn |
Crataegus laevigata |
16 |
| snow pear |
Pyrus x nivalis |
4 |
| southern catalpa |
Catalpa bignonioides |
2 |
| spindletree |
Euonymus verrucosus |
2 |
| spiny cocklebur |
Xanthium spinosum |
1 |
| spiny sowthistle |
Sonchus asper |
3 |
| spirea |
Spiraea media |
20 |
| spotted deadnettle |
Lamium maculatum |
2 |
| spotted spurge |
Euphorbia maculata |
14 |
| spring whitlowgrass |
Draba verna |
3 |
| spurge |
Euphorbia seguieriana |
1 |
| spurgelaurel |
Daphne laureola |
4 |
| staghorn sumac |
Rhus typhina |
19 |
| stinking goosefoot |
Chenopodium vulvaria |
5 |
| sun spurge |
Euphorbia helioscopia |
6 |
| sweet cherry |
Prunus avium |
43 |
| sweetbriar |
Rosa rubiginosa |
5 |
| sweetgum |
Liquidambar styraciflua |
4 |
| Sycamore maple |
Acer pseudoplatanus |
7 |
| tamarisk |
Tamarix tetrandra |
6 |
| tatarian maple |
Acer tataricum |
40 |
| tree-of-heaven |
Ailanthus altissima |
22 |
| trumpetcreeper |
Campsis radicans |
8 |
| tumble pigweed |
Amaranthus albus |
1 |
| turnip-root chervil |
Chaerophyllum bulbosum |
2 |
| upright pellitory |
Parietaria officinalis |
7 |
| valerian |
Valeriana spp. |
3 |
| Vanhoutte spiraea |
Spiraea x vanhouttei |
4 |
| velvetleaf |
Abutilon theophrasti |
8 |
| wall lettuce |
Mycelis muralis |
10 |
| waterpurslane |
Ludwigia palustris |
5 |
| wayfaringtree |
Viburnum lantana |
8 |
| wayside speedwell |
Veronica polita |
6 |
| western touch-me-not |
Impatiens noli-tangere |
4 |
| white bryony |
Bryonia alba |
6 |
| white mulberry |
Morus alba |
26 |
| white poplar |
Populus alba |
21 |
| white willow |
Salix alba |
36 |
| whitewoolly rose |
Rosa tomentosa |
4 |
| whortleberry |
Vaccinium myrtillus |
5 |
| wild chervil |
Anthriscus sylvestris |
10 |
| wild cucumber |
Echinocystis lobata |
13 |
| wild pear |
Pyrus pyraster |
9 |
| willow |
Salix rosmarinifolia |
12 |
| wintergreen barberry |
Berberis julianae |
4 |
| witch-hazel |
Hamamelis spp. |
23 |
| woodsorrel |
Oxalis spp. |
5 |
| wych elm |
Ulmus glabra |
1 |
| yellow archangel |
Lamium galeobdolon |
1 |
| yellow mignonette |
Reseda lutea |
2 |
| yellow woodsorrel |
Oxalis stricta |
1 |
| yellow-poplar |
Liriodendron tulipifera |
3 |
