United Kingdom

Alternate-leaved Butterfly-bush

Buddleja alternifolia

Amarelle Cherry

Prunus cerasus

Ambrosi's Cave Salamander

Speleomantes ambrosii

American Barnyard Grass

Echinochloa muricata

American Bellbine

Calystegia silvatica

American Black Elderberry

Sambucus canadensis

American Black Nightshade

Solanum americanum

American Blueberry

Vaccinium corymbosum

American Blue-Eyed-Grass

Sisyrinchium montanum

American Blue Vervain

Verbena hastata

American brackish water medusa

Nemopsis bachei

American Buffalo Treehopper

Stictocephala bisonia

American Comb Jelly

Mnemiopsis leidyi

American Cranberry

Vaccinium macrocarpon

American Cress

Barbarea verna

American Cupped Oyster

Crassostrea virginica

American Dragon-Head

Dracocephalum parviflorum

American Figwort

Scrophularia lanceolata

American Fox Sedge

Carex vulpinoidea

Blackdisk medick

Medicago orbicularis

Black Dog-Strangling Vine

Vincetoxicum nigrum

Black Eyed Susan

Thunbergia alata

Black fungus beetle

Alphitobius laevigatus

Black-grape Cotoneaster

Cotoneaster ignotus

Black-grass

Alopecurus myosuroides

Black Henbane

Hyoscyamus niger

Black Horehound

Ballota nigra

Black larder beetle

Dermestes ater

black line scale

Ischnaspis longirostris

Black Locust

Robinia pseudoacacia

Black Marram Weevil

Otiorhynchus atroapterus

Black Mulberry

Morus nigra

Black Nightshade

Solanum nigrum

black pea

Lathyrus niger

Argentine Cocklebur

Xanthium ambrosioides

Argentine needlegrass

Nassella tenuissima

Argentine pepperweed

Lepidium bonariense

Arizona beggar-ticks

Bidens aurea

arizona-cypress

Cupressus arizonica

Armenian crane's-bill

Geranium psilostemon

Arrocillo

Paspalum paniculatum

Arrow bamboo

Pseudosasa japonica

arrow-head scale

Unaspis yanonensis

Arrowleaf clover

Trifolium vesiculosum

Arrowleaf sida

Sida rhombifolia

Arsenic bush

Senna septemtrionalis

Artemisia

Artemisia vulgaris

Atlantic Giant Pumpkin

Cucurbita maxima

Atlantic Ninebark

Physocarpus opulifolius

Atlantic rangia

Rangia cuneata

Atlantic Stream Crayfish

Austropotamobius pallipes

Atlantic Surf Clam

Spisula solidissima

Atlas Cedar

Cedrus atlantica

Atlas Poppy

Papaver atlanticum

Aubretia

Aubrieta deltoidea

Auricula

Primula auricula

Ascochyta syringae

Ashy Cinquefoil

Potentilla inclinata

Asian Ambrosia Beetle

Xyleborinus attenuatus

Asian Bittersweet

Celastrus orbiculatus