Belgium

Actidium hysterioides

Active gray pine needle aphid

Eulachnus rileyi

Adam-and-Eve

Arum maculatum

Adam's Leedle

Yucca gloriosa

Adder'S Fern

Polypodium vulgare

Adder'S Tongue

Ophioglossum vulgatum

Adelgid

Pineus pineoides

Adherent Bristle-grass

Setaria adhaerens

Adonis Blue

Lysandra bellargus

Adonis' Ladybird

Hippodamia variegata

Adria Bellflower

Campanula portenschlagiana

Adriatic bellflower

Campanula garganica

Aeonium

Aeonium cuneatum

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 couchgrass

Digitaria abyssinica

African-lily

Agapanthus praecox

African pepperwort

Lepidium africanum

Agaricus brunneolus

Agaricus fuscofibrillosus

Agaricus lutosus

Agaricus macrocarpus

Agaricus phaeolepidotus

Agaricus semotus

Agaricus subperonatus

Agaricus urinascens

Agate Knot-horn

Nyctegretis lineana

agate snail

Cecilioides acicula

Ageratum

Ageratum houstonianum

Agrimony case-bearer

Coleophora follicularis

Agrimony Rust

Pucciniastrum agrimoniae

Agrocybe arvalis

Agrocybe dura

Agrocybe elatella

Agrocybe firma

Agrocybe ochracea

Akiraho

Olearia paniculata

Alaska Cedar

Xanthocyparis nootkatensis

Alberta Spruce

Picea glauca

Albotricha acutipila

alchymist

Catephia alchymista

alcon blue

Maculinea alcon

Alder Kitten

Furcula bicuspis

Alder Leaf Gall Mite

Eriophyes laevis

Alder Milkcap

Lactarius obscuratus

Alder Scalycap

Flammula alnicola

alder silk moss

Plagiothecium latebricola

Alder's necklace shell

Euspira nitida

Alder Tongue

Taphrina alni

Alder wooly sawfly

Eriocampa ovata

Alecost

Tanacetum balsamita

Aleutian Maidenhair

Adiantum aleuticum

alexanders

Smyrnium olusatrum

Alexanders Rust

Puccinia smyrnii

Alexandrium leei

Alexandrium tamarense

alfalfa leaf-cutter bee

Megachile rotundata