Ireland

Alexandrium tamarense

Aphanomyces astaci

Puccinia lagenophorae

Erwinia amylovora

Karenia mikimotoi

Rhabdocline pseudotsugae

Macrophomina phaseolina

Phytophthora syringae

Heterosigma akashiwo

Isochrysis galbana

Ramularia collo-cygni

Entoleuca mammata

Abalone

Haliotis tuberculata

Abele

Populus alba

Absinth Sagewort

Artemisia absinthium

Aconite

Aconitum napellus

Adria Bellflower

Campanula portenschlagiana

Aegean wallflower

Erysimum cheiri

Ailanthus

Ailanthus altissima

Ake-ake

Olearia traversii

Akiraho

Olearia paniculata

Alaska Cedar

Xanthocyparis nootkatensis

Albanian spurge

Euphorbia characias

Alberta Spruce

Picea glauca

Alder rust

Melampsoridium hiratsukanum

alexanders

Smyrnium olusatrum

Alfalfa

Medicago sativa

Algae

Gracilaria vermiculophylla

Alien field ant

Lasius alienus

Alkanet

Anchusa officinalis

Almond moth

Cadra cautella

Alsike Clover

Trifolium hybridum

a mammal flea

Rhadinopsylla pentacantha

Amarelle Cherry

Prunus cerasus

American Bellbine

Calystegia silvatica

American Blue-Eyed-Grass

Sisyrinchium montanum

American Clawed Lobster

Homarus americanus

American Copper

Lycaena phlaeas

American Cranberry

Vaccinium macrocarpon

American Cress

Barbarea verna

American Cupped Oyster

Crassostrea virginica

American Gooseberry Mildew

Podosphaera mors-uvae

American Hard-Shelled Clam

Mercenaria mercenaria

American Ivy

Parthenocissus quinquefolia

American Oyster Drill

Urosalpinx cinerea

American skunk cabbage

Lysichiton americanus

American Slipper Limpet

Crepidula fornicata

American Walnut

Juglans nigra

American Willowherb

Epilobium ciliatum

Anise

Myrrhis odorata

Aniseed-Weed

Foeniculum vulgare

Annual bastardcabbage

Rapistrum rugosum

Annual canarygrass

Phalaris canariensis

Annual candytuft

Iberis amara

Annual Cosmos

Cosmos bipinnatus

Annual Fleabane

Erigeron annuus

Annual Honesty

Lunaria annua

Annual Knawel

Scleranthus annuus

Annual Mercury

Mercurialis annua

Annual rabbitsfoot grass

Polypogon monspeliensis