Belgium

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

Ailanthus

Ailanthus altissima

Akiraho

Olearia paniculata

Akulikuli-Kula

Portulaca oleracea

Alaska Cedar

Xanthocyparis nootkatensis

Albanian spurge

Euphorbia characias

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

Aleppo Grass

Sorghum halepense

Aleutian Maidenhair

Adiantum aleuticum

alexanders

Smyrnium olusatrum

Alexanders Rust

Puccinia smyrnii

Alexandra's Parrot / Princess Parrot

Polytelis alexandrae

Alexandrium leei

Alexandrium tamarense

Alfalfa

Medicago sativa

alfalfa leaf-cutter bee

Megachile rotundata

Alfalfa Moth

Cydia medicaginis

Algerian Iris

Iris unguicularis

Algerian Ivy

Hedera algeriensis

Algerian Oak

Quercus canariensis

Alien field ant

Lasius alienus

Alisma Graminoide

Alisma gramineum

Alkali American Aster

Symphyotrichum ciliatum

Alkanet

Anchusa officinalis

All-black Snout

Nemotelus nigrinus

Allegheny Blackberry

Rubus allegheniensis

Allegheny Monkey-Flower

Mimulus ringens

Allheal

Valeriana officinalis

Alligatorweed

Alternanthera philoxeroides

Allium leafminer

Phytomyza gymnostoma

Almond Woodwax

Hygrophorus agathosmus

Aloe Haircap

Pogonatum aloides