Jump to genus: Abies, Abortiporus, Abronia, Abutilon, Acanthophysellum, Acarospora, Acer, Achillea, , Achlys, , Achnatherum, Achyrachaena, Acmispon, Acolium, Aconitum, Aconogonon, Acorus, Actaea, Adelinia, Adenocaulon, Adiantum, Adonis, Aegilops, Aegopodium, Aesculus, Agalinis, , Agaricus, Agastache, Ageratina, Agoseris, Agrimonia, Agrocybe, Agropyron, Agrostemma, Agrostis, Ahtiana, Ailanthus, Aira, Ajuga, Albatrellus, Alboleptonia, Alcea, Alectoria, Aleuria, Aleurodiscus, Alhagi, Aliciella, Alisma, Alliaria, , Allium, Alloclavaria, Allotropa, Alnus, Alopecurus, Alpova, Alyssum, Alyxoria, Amandinea, Amanita, Amaranthus, Amaryllis, Amauropelta, Ambrosia, Amelanchier, Ammannia, Ammophila, Amorpha, Amphiscirpus, Ampulloclitocybe, , Amsinckia, , Amygdalaria, Anaphalis, Anchusa, Andromeda, Androsace, , Anemone, Anemopsis, Anethum, Angelica, Anisocarpus, Anisomeridium, Annulohypoxylon, Antennaria, Anthemis, Anthoxanthum, Anthracobia, Anthriscus, Anticlea, Antirrhinum, Antrodia, Apera, Aphanes, Aphyllon, Apium, Apocynum, Aquilegia, Arabidopsis, Arabis, Aralia, Arbutus, Arceuthobium, Arcteranthis, Arctium, Arctoparmelia, , Arctostaphylos, Arenaria, Argemone, Aristida, Armeria, Armillaria, Armoracia, Arnica, Arrhenatherum, Arrhenia, , Artemisia, Arthonia, Arum, Aruncus, Arundo, Asahinea, Asarum, Asclepias, Ascobolus, Ascocoryne, Askellia, Asparagus, Asperugo, Aspicilia, Aspidotis, Asplenium, Asterophora, Astraeus, , Astragalus, Asyneuma, Athallia, , Athyrium, Athysanus, Atocion, Atriplex, Aubrieta, Aureoboletus, Auricularia, Auriscalpium, Avena, Azolla
