Alisma lanceolatum
Alisma plantago-aquatica
Alisma sp.
Alliaria petiolata
Allium carinatum
Allium cepa
Allium fistulosum
Allium oleraceum
Allium porrum
Allium sativum
Allium scorodoprasum
Allium senescens
Allium senescens subsp. montanum
Allium schoenoprasum
Allium sp.
Allium ursinum
Allium vineale
Alnus × pubescens
Alnus alnobetula
Alnus glutinosa
Alnus incana
Alopecurus aequalis
Alopecurus geniculatus
Alopecurus myosuroides
Alopecurus pratensis
Althaea officinalis
Alyssum alyssoides
Alyssum murale
Amaranthus albus
Amaranthus blitoides
Amaranthus blitum
Amaranthus caudatus
Amaranthus cruentus
Amaranthus powellii
Amaranthus retroflexus
Ambrosia artemisiifolia
Amelanchier ovalis
Amelanchier sp.
Amelanchier spicata
Ammobium alatum
Amorpha fruticosa
Anacamptis morio
Anacamptis palustris
Anacamptis pyramidalis
Anagallis arvensis
Anaphalis margaritacea
Andromeda polifolia
Androsace elongata
Anemone nemorosa
Anemone ranunculoides
Anemone sylvestris
Anethum graveolens
Angelica sylvestris
Anchusa officinalis
Antennaria dioica
Anthemis arvensis
Anthemis cotula
Anthemis tinctoria
Anthericum liliago
Anthericum ramosum
Anthoxanthum odoratum
Anthriscus caucalis
Anthriscus cerefolium
Anthriscus cerefolium var. cerefolium
Anthriscus cerefolium var. trichocarpus
Anthriscus sylvestris
Anthyllis vulneraria
Anthyllis vulneraria subsp. polyphylla
Anthyllis vulneraria subsp. pseudovulneraria
Antirrhinum majus
Apera spica-venti
Aphanes arvensis
Aphanes australis
Apium graveolens
Aquilegia vulgaris
Arabidopsis arenosa
Arabidopsis arenosa subsp. arenosa
Arabidopsis halleri
Arabidopsis thaliana
Arabis auriculata
Arabis caucasica
Arabis glabra
Arabis hirsuta
Arabis turrita
Arctium × ambiguum
Arctium × mixtum
Arctium lappa
Arctium minus
Arctium nemorosum
Arctium tomentosum
Arctostaphylos uva-ursi
Arenaria serpyllifolia
Arenaria serpyllifolia agg.
Armeria elongata
Armeria elongata subsp. elongata
Armoracia rusticana
Arnica montana
Arnoseris minima
Arrhenatherum elatius
Artemisia absinthium
Artemisia annua
Artemisia campestris
Artemisia dracunculus
Artemisia pontica
Artemisia scoparia
Artemisia verlotiorum
Artemisia vulgaris
Aruncus dioicus
Asarum europaeum
Asclepias syriaca
Asparagus officinalis
Asperula cynanchica
Asperula tinctoria
Asplenium × alternifolium
Asplenium adiantum-nigrum
Asplenium cuneifolium
Asplenium ruta-muraria
Asplenium scolopendrium
Asplenium septentrionale
Asplenium trichomanes
Asplenium trichomanes subsp. quadrivalens
Asplenium trichomanes subsp. trichomanes
Asplenium viride
Aster amellus
Aster sp.
Astragalus austriacus
Astragalus cicer
Astragalus danicus
Astragalus exscapus
Astragalus glycyphyllos
Astrantia major
Athyrium distentifolium
Athyrium filix-femina
Atocion armeria
Atriplex hortensis
Atriplex micrantha
Atriplex oblongifolia
Atriplex patula
Atriplex prostrata
Atriplex prostrata subsp. latifolia
Atriplex sagittata
Atriplex tatarica
Atropa bella-donna
Aubrieta deltoidea
Aurinia saxatilis
Aurinia saxatilis subsp. saxatilis
Avena fatua
Avena sativa
Avenella flexuosa