Abies procera
Noble Fir
Acaena ovalifolia
Two-spined Acaena
Acer platanoides
Norway Maple
Acer pseudoplatanus
Sycamore
Aesculus hippocastanum
Horse-chestnut
Alcea rosea
Hollyhock
Alchemilla mollis
Garden Lady's-mantle
Allium paradoxum
Few-flowered Garlic
Allium roseum
Rosy Garlic
Allium triquetrum
Three-cornered Garlic
Alnus cordata
Italian Alder
Amaranthus hybridus
Green Amaranth
Amaranthus retroflexus
Common Amaranth
Amaryllis belladonna
Jersey Lily
Ambrosia artemisiifolia
Ragweed
Amelanchier lamarckii
Juneberry
Ammi majus
Bullwort
Amsinckia micrantha
Common Fiddleneck
Anaphalis margaritacea
Pearly Everlasting
Anchusa azurea
Garden Anchusa
Anemone ranunculoides
Yellow Anemone
Angelica archangelica
Garden Angelica
Antirrhinum majus
Snapdragon
Aquilegia pyrenaica
Pyrenean Columbine