United Kingdom

Alberta Spruce

Picea glauca

Alecost

Tanacetum balsamita

alexanders

Smyrnium olusatrum

Alexanders Rust

Puccinia smyrnii

Alexandrium leei

Alexandrium tamarense

Algerian Iris

Iris unguicularis

Algerian Ivy

Hedera algeriensis

Algerian Oak

Quercus canariensis

Alkanet

Anchusa officinalis

Allegheny Blackberry

Rubus allegheniensis

Alligatorweed

Alternanthera philoxeroides

Allium leafminer

Phytomyza gymnostoma

Alpine Blue-sow-thistle

Cicerbita alpina

Alpine currant

Ribes alpinum

Alpine Dock

Rumex alpinus

Alpine Fur

Abies lasiocarpa

Alpine Knapweed

Centaurea nigrescens

alpine meadow grass

Poa alpina

alpine-scabious

Cephalaria alpina

Alpine Squill

Scilla bifolia

Alternaria saponariae

Alternate-leaved Butterfly-bush

Buddleja alternifolia

Ambrosi's Cave Salamander

Speleomantes ambrosii

American Barnyard Grass

Echinochloa muricata

American Bellbine

Calystegia silvatica

American Black Elderberry

Sambucus canadensis

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 Cupped Oyster

Crassostrea virginica

American Dragon-Head

Dracocephalum parviflorum

American Figwort

Scrophularia lanceolata

American Fox Sedge

Carex vulpinoidea

American Gooseberry Mildew

Podosphaera mors-uvae

American Hackberry

Celtis occidentalis

American Hedge-Hyssop

Gratiola neglecta

American Horseshoe Crab

Limulus polyphemus

American Oyster Drill

Urosalpinx cinerea

American Piddock

Petricolaria pholadiformis

American Rhododendron

Rhododendron maximum

American skunk cabbage

Lysichiton americanus

American Slipper Limpet

Crepidula fornicata

American Spikenard

Aralia racemosa

American Tearthumb

Persicaria sagittata

American Twinflower

Linnaea borealis

American Wainscot

Mythimna unipuncta

American White Moth

Hyphantria cunea

American Willowherb

Epilobium ciliatum

Anchor worm

Lernaea cyprinacea

Andean Water Milfoil

Myriophyllum quitense

Andromeda Lacebug

Stephanitis takeyai

An Eyebright

Euphrasia stricta

Angel'S Trumpet

Datura innoxia

Angel's-trumpets

Datura ferox

Angled Burr Cucumber

Sicyos angulatus

Angled Hydromedusa

Gonionemus vertens