Angelica archangelica
Garden Angelica
Angelica sylvestris
Wild Angelica
Antennaria dioica
Mountain Everlasting
Anthoxanthum odoratum
Sweet Vernal-grass
Anthriscus sylvestris
Cow Parsley
Aphanes arvensis
Parsley-piert
Arabidopsis petraea
Northern Rock-cress
Arabidopsis thaliana
Thale Cress
Arabis hirsuta
Hairy Rock-cress
Arabis scabra
Bristol Rock-cress
Arctium minus
Lesser Burdock
Arenaria serpyllifolia
Armoracia rusticana
Horse-radish
Arrhenatherum elatius
False Oat-grass
Asparagus verticillatus
Asplenium onopteris
Irish Spleenwort
Atriplex laciniata
Frosted Orache
Atriplex littoralis
Grass-leaved Orache
Atriplex portulacoides
Sea-purslane
Atriplex prostrata
Spear-leaved Orache
Avena sativa
Oat
Baldellia ranunculoides
Lesser Water-plantain
Ballota nigra
Black Horehound
Barbarea vulgaris
Winter-cress