United Kingdom

Common St. Paul's wort

Sigesbeckia orientalis

silver-washed fritillary

Argynnis paphia

Common sowthistle

Sonchus oleraceus

Asian chestnut gall wasp

Dryocosmus kuriphilus

Australian Bur-grass

Tragus australianus

American Dragon-Head

Dracocephalum parviflorum

Alecost

Tanacetum balsamita

Common Smoketree

Cotinus coggygria

Asian Bush Mosquito

Aedes japonicus

Common Salsify

Tragopogon porrifolius

Argentine Barley

Hordeum euclaston

Common pricklypear

Opuntia monacantha

Common Periwinkle

Vinca minor

Astrantia

Astrantia major

Common Pear

Pyrus communis

Common Morning Glory

Ipomoea purpurea

Asparagus fern

Asparagus densiflorus

Argentine ant

Linepithema humile

American Cupped Oyster

Crassostrea virginica

Common Milkweed

Asclepias syriaca

Common Lilac

Syringa vulgaris

Asiatic red scale

Aonidiella taxus

Common Lavender

Lavandula angustifolia

Common Knotweed

Polygonum arenastrum

Asiatic Dayflower

Commelina communis

Argentina Vervain

Verbena bonariensis

Common iceplant

Mesembryanthemum crystallinum

Common Houseleek

Sempervivum tectorum

Asian Skunk-cabbage

Lysichiton camtschatcensis

Common Horse Chestnut

Aesculus hippocastanum

Common Hop-Tree

Ptelea trifoliata

Asian Longhorned Beetle

Anoplophora glabripennis

Arctic dwarf birch

Betula nana

American Cress

Barbarea verna

Alberta Spruce

Picea glauca

African asparagus fern

Asparagus asparagoides

Adam's Leedle

Yucca gloriosa

Abutilon-Hemp

Abutilon theophrasti

Common Honey-Locust

Gleditsia triacanthos

Common Grapevine

Vitis vinifera

Asian Hornet

Vespa velutina

Common Geranium Bronze

Cacyreus marshalli

Asian China-mark

Elophila difflualis

Arctic cancellate chiton

Leptochiton cancellatus

Common Garden Poppy

Papaver somniferum

common freshwater amphipod

Gammarus pulex

Asian Bittersweet

Celastrus orbiculatus

Common Forget-Me-Not

Myosotis arvensis

Asian Ambrosia Beetle

Xyleborinus attenuatus

Arborvitae Leafminer

Argyresthia thuiella

American Cranberry

Vaccinium macrocarpon

Common Flax

Linum usitatissimum

Common Crocus

Crocus vernus

Ashy Cinquefoil

Potentilla inclinata

Common dogmustard

Erucastrum gallicum

Common Dodder

Cuscuta gronovii

Ascochyta syringae

common-cypress

Cupressus sempervirens

Auricula

Primula auricula

Common catchfly

Silene gallica