United Kingdom

Five-Seed Plume-Poppy

Macleaya cordata

scotch argus

Erebia aethiops

flat-fruit orlaya

Orlaya daucoides

Basket Fungus

Ileodictyon cibarium

flax dodder

Cuscuta epilinum

floating pennywort

Hydrocotyle ranunculoides

Florida wax scale

Ceroplastes floridensis

florist's cyclamen

Cyclamen persicum

Flowering Raspberry

Rubus odoratus

18-spot ladybird

Myrrha octodecimguttata

Flowering Tobacco

Nicotiana alata

Abalone

Haliotis tuberculata

Abele

Populus alba

Absinth Sagewort

Artemisia absinthium

Abutilon-Hemp

Abutilon theophrasti

Abyssinian mustard

Crambe hispanica

Acrid lettuce

Lactuca virosa

Active gray pine needle aphid

Eulachnus rileyi

Adam's Leedle

Yucca gloriosa

Adam'S Needle

Yucca filamentosa

Adelgid

Pineus pineoides

Adherent Bristle-grass

Setaria adhaerens

Adonis Blue

Lysandra bellargus

Adria Bellflower

Campanula portenschlagiana

Aegean wallflower

Erysimum cheiri

Aeonium

Aeonium cuneatum

Afghan-Melon

Citrullus lanatus

African amaranth

Amaranthus muricatus

African asparagus fern

Asparagus asparagoides

African Bermuda-grass

Cynodon incompletus

African bird Argasid

Argas reflexus

African bristlegrass

Setaria sphacelata

African Carnation Tortrix

Epichoristodes acerbella

African clawed frog

Xenopus laevis

African-lily

Agapanthus praecox

African Marigold

Tagetes erecta

African pepperwort

Lepidium africanum

African-Spinach

Amaranthus cruentus

agate snail

Cecilioides acicula

Ageratum

Ageratum houstonianum

Ailanthus

Ailanthus altissima

Akiraho

Olearia paniculata

Akulikuli-Kula

Portulaca oleracea

Alaska Cedar

Xanthocyparis nootkatensis

Albanian spurge

Euphorbia characias

Alberta Spruce

Picea glauca

Alecost

Tanacetum balsamita

Aleppo Grass

Sorghum halepense

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

Aloe Yucca

Yucca aloifolia