| almond |
Prunus dulcis |
1 |
| Alpine clematis |
Clematis alpina |
2 |
| American burnweed |
Erechtites hieraciifolius |
1 |
| annual fleabane |
Erigeron annuus |
5 |
| annual sowthistle |
Sonchus oleraceus |
2 |
| ash |
Fraxinus angustifolia ssp. oxycarpa |
4 |
| bitter fleabane |
Erigeron acris |
2 |
| black cherry |
Prunus serotina |
19 |
| black locust |
Robinia pseudoacacia |
3 |
| black walnut |
Juglans nigra |
1 |
| blackberry |
Rubus saxatilis |
4 |
| blackthorn |
Prunus spinosa |
7 |
| bladder senna |
Colutea arborescens |
2 |
| bladdernut |
Staphylea pinnata |
2 |
| bloodtwig dogwood |
Cornus sanguinea |
17 |
| Bohemian knotweed |
Fallopia x bohemica |
2 |
| Boston ivy |
Parthenocissus tricuspidata |
2 |
| boxelder |
Acer negundo |
3 |
| broadleaf dock |
Rumex obtusifolius |
1 |
| broadleaf plantain |
Plantago major |
1 |
| broom |
Cytisus nigricans |
2 |
| buckeye |
Aesculus spp. |
2 |
| burning nettle |
Urtica urens |
7 |
| California privet |
Ligustrum ovalifolium |
3 |
| Canada goldenrod |
Solidago canadensis |
2 |
| cane fruit (blackberry, raspberry) |
Rubus spp. |
3 |
| catchweed bedstraw |
Galium aparine |
2 |
| checkertree |
Sorbus torminalis |
10 |
| cherry laurel |
Prunus laurocerasus |
2 |
| chervil |
Anthriscus cerefolium |
1 |
| chess-apple |
Sorbus aria |
6 |
| clammy locust |
Robinia viscosa |
5 |
| colchis ivy |
Hedera colchica |
1 |
| common cocklebur |
Xanthium strumarium |
2 |
| common evening-primrose |
Oenothera biennis |
1 |
| common filbert |
Corylus avellana |
1 |
| common hackberry |
Celtis occidentalis |
1 |
| common hop |
Humulus lupulus |
1 |
| common horse chestnut |
Aesculus hippocastanum |
1 |
| common periwinkle |
Vinca minor |
10 |
| common pokeweed |
Phytolacca americana |
8 |
| corn poppy |
Papaver rhoeas |
3 |
| Cornelian cherry dogwood |
Cornus mas |
3 |
| corpse-bindweed |
Fallopia dumetorum |
4 |
| cotoneaster |
Cotoneaster integerrimus |
8 |
| cotoneaster |
Cotoneaster melanocarpus |
5 |
| cotoneaster |
Cotoneaster nebrodensis |
2 |
| crack willow |
Salix fragilis |
31 |
| cultivated currant |
Ribes rubrum |
9 |
| currant |
Ribes spp. |
2 |
| dandelion |
Taraxacum officinale |
3 |
| Daphne |
Daphne cneorum ssp. arbusculoides |
13 |
| dog rose |
Rosa canina |
3 |
| downy birch |
Betula pubescens |
5 |
| downy oak |
Quercus pubescens |
9 |
| dwarf elderberry |
Sambucus ebulus |
5 |
| dwarf honeysuckle |
Lonicera xylosteum |
9 |
| eared willow |
Salix aurita |
3 |
| Elaeagnus willow |
Salix elaeagnos |
4 |
| elm |
Ulmus spp. |
3 |
| eltrot |
Heracleum sphondylium |
1 |
| English elm |
Ulmus procera |
1 |
| English hawthorn |
Crataegus monogyna |
1 |
| English ivy |
Hedera helix |
2 |
| English oak |
Quercus robur |
11 |
| English walnut |
Juglans regia |
10 |
| European alder |
Alnus glutinosa |
2 |
| European ash |
Fraxinus excelsior |
10 |
| European aspen |
Populus tremula |
15 |
| European beech |
Fagus sylvatica |
13 |
| European black currant |
Ribes nigrum |
2 |
| European blackberry |
Rubus fruticosus |
1 |
| European buckthorn |
Rhamnus cathartica |
4 |
| European chestnut |
Castanea sativa |
5 |
| European crabapple |
Malus sylvestris |
5 |
| European cranberrybush |
Viburnum opulus |
1 |
| European dewberry |
Rubus caesius |
6 |
| European gooseberry |
Ribes uva-crispa |
4 |
| European hornbeam |
Carpinus betulus |
8 |
| European mistletoe variety |
Viscum album ssp. austriacum |
1 |
| European privet |
Ligustrum vulgare |
1 |
| European smoketree |
Cotinus coggygria |
4 |
| European spindletree |
Euonymus europaeus |
1 |
| European stinging nettle |
Urtica dioica ssp. dioica |
1 |
| European turkey oak |
Quercus cerris |
12 |
| European white birch |
Betula pendula |
3 |
| European white elm |
Ulmus laevis |
12 |
| evergreen clematis |
Clematis vitalba |
1 |
| false spiraea |
Sorbaria sorbifolia |
4 |
| fanwort |
Cabomba caroliniana |
2 |
| February daphne |
Daphne mezereum |
3 |
| field bindweed |
Convolvulus arvensis |
3 |
| figleaved goosefoot |
Chenopodium ficifolium |
4 |
| flixweed |
Descurainia sophia |
1 |
| floating pennywort |
Hydrocotyle ranunculoides |
3 |
| floating waterprimrose |
Ludwigia repens |
1 |
| flowering ash |
Fraxinus ornus |
12 |
| fumitory |
Fumaria schleicheri |
1 |
| garlic mustard |
Alliaria petiolata |
3 |
| giant goldenrod |
Solidago gigantea |
2 |
| giant hogweed |
Heracleum mantegazzianum |
9 |
| glossy buckthorn |
Frangula alnus |
3 |
| goat willow |
Salix caprea |
15 |
| golden currant |
Ribes aureum |
4 |
| grape |
Vitis spp. |
1 |
| great burdock |
Arctium lappa |
1 |
| greater celandine |
Chelidonium majus |
2 |
| green ash |
Fraxinus pennsylvanica |
4 |
| hedge bindweed |
Calystegia sepium |
4 |
| hedge maple |
Acer campestre |
9 |
| hedge mustard |
Sisymbrium officinale |
3 |
| hedgerow geranium |
Geranium pyrenaicum |
2 |
| herb bennet |
Geum urbanum |
3 |
| herb-robert |
Geranium robertianum |
2 |
| honeylocust |
Gleditsia triacanthos |
4 |
| horseweed |
Conyza canadensis |
2 |
| indigobush |
Amorpha fruticosa |
1 |
| ivyleaf speedwell |
Veronica hederifolia |
3 |
| Japanese maple |
Acer palmatum |
2 |
| Japanese skimmia |
Skimmia japonica |
2 |
| lambsquarters |
Chenopodium album |
1 |
| large gray willow |
Salix cinerea |
3 |
| largeleaf linden |
Tilia platyphyllos |
9 |
| leatherleaf mahonia |
Mahonia bealei |
3 |
| littleleaf linden |
Tilia cordata |
1 |
| London planetree |
Platanus hybrida |
1 |
| magnolia |
Magnolia spp. |
7 |
| Mahaleb cherry |
Prunus mahaleb |
8 |
| mayweed |
Tripleurospermum maritimum ssp. inodorum |
1 |
| medlar |
Mespilus germanica |
3 |
| mexicantea |
Dysphania ambrosioides |
5 |
| mimosa |
Albizia julibrissin |
4 |
| mistletoe |
Loranthus europaeus |
1 |
| mistletoe |
Viscum album ssp. abietis |
2 |
| mistletoe |
Viscum album ssp. album |
2 |
| mountain ash |
Sorbus spp. |
3 |
| mountain grape |
Mahonia aquifolium |
4 |
| mouse-ear cress |
Arabidopsis thaliana |
2 |
| northern red oak |
Quercus rubra |
1 |
| Norway maple |
Acer platanoides |
1 |
| Oriental hornbeam |
Carpinus orientalis |
8 |
| paper-mulberry |
Broussonetia papyrifera |
4 |
| Persian ironwood |
Parrotia persica |
2 |
| poison-hemlock |
Conium maculatum |
3 |
| princesstree |
Paulownia tomentosa |
5 |
| purpleosier willow |
Salix purpurea |
1 |
| quince |
Cydonia oblonga |
1 |
| red amaranth |
Amaranthus cruentus |
1 |
| red elderberry |
Sambucus racemosa |
1 |
| redroot pigweed |
Amaranthus retroflexus |
3 |
| redvein dock |
Rumex sanguineus |
2 |
| rock buckthorn |
Rhamnus saxatilis |
1 |
| rough chervil |
Chaerophyllum temulum |
3 |
| roundleaf toothcup |
Rotala rotundifolia |
4 |
| Scotch thistle |
Onopordum acanthium |
3 |
| seaport goosefoot |
Chenopodium opulifolium |
8 |
| Senegal tea plant |
Gymnocoronis spilanthoides |
1 |
| servicetree |
Sorbus domestica |
16 |
| sessile oak |
Quercus petraea |
6 |
| silverweed cinquefoil |
Argentina anserina |
3 |
| slender Russian thistle |
Salsola collina |
2 |
| small flower touch-me-not |
Impatiens parviflora |
2 |
| smallflower galinsoga |
Galinsoga parviflora |
2 |
| smooth hawthorn |
Crataegus laevigata |
3 |
| snow pear |
Pyrus x nivalis |
4 |
| spindletree |
Euonymus verrucosus |
1 |
| spiny sowthistle |
Sonchus asper |
3 |
| spirea |
Spiraea media |
10 |
| spotted deadnettle |
Lamium maculatum |
1 |
| spotted spurge |
Euphorbia maculata |
12 |
| staghorn sumac |
Rhus typhina |
11 |
| stinking goosefoot |
Chenopodium vulvaria |
4 |
| sweet cherry |
Prunus avium |
12 |
| sweetbriar |
Rosa rubiginosa |
1 |
| sweetgum |
Liquidambar styraciflua |
3 |
| Sycamore maple |
Acer pseudoplatanus |
2 |
| tatarian maple |
Acer tataricum |
5 |
| tree-of-heaven |
Ailanthus altissima |
1 |
| Vanhoutte spiraea |
Spiraea x vanhouttei |
2 |
| wall lettuce |
Mycelis muralis |
6 |
| waterpurslane |
Ludwigia palustris |
1 |
| wayside speedwell |
Veronica polita |
1 |
| western touch-me-not |
Impatiens noli-tangere |
2 |
| white bryony |
Bryonia alba |
2 |
| white mulberry |
Morus alba |
1 |
| white poplar |
Populus alba |
1 |
| white willow |
Salix alba |
6 |
| whitewoolly rose |
Rosa tomentosa |
1 |
| wild chervil |
Anthriscus sylvestris |
7 |
| wild pear |
Pyrus pyraster |
1 |
| willow |
Salix rosmarinifolia |
3 |
| wintergreen barberry |
Berberis julianae |
1 |
| woodsorrel |
Oxalis spp. |
2 |
| yellow woodsorrel |
Oxalis stricta |
1 |
| yellow-poplar |
Liriodendron tulipifera |
2 |
