Anthyllis vulneraria
Kidney Vetch
Antigonon leptopus
Coral Vine
Antirrhinum majus
Snapdragon
Aphanamixis polystachya
Pithraj Tree
Aphanes arvensis
Parsley-piert
Aphanes arvensis agg.
Parsley-piert
Aphanes australis
Slender Parsley-piert
Aquilegia alpina
Alpine Columbine
Aquilegia pyrenaica
Pyrenean Columbine
Aquilegia vulgaris
Columbine
Arabidopsis petraea
Northern Rock-cress
Arabidopsis thaliana
Thale Cress
Arabis caucasica
Garden Arabis
Arabis hirsuta
Hairy Rock-cress
Arabis scabra
Bristol Rock-cress
Arachis hypogaea
Penut
Arachnothryx leucophylla
Bush Pentas
Araucaria araucana
Monkey-puzzle
Araucaria columnaris
New Caledonia Pine
Araucaria heterophylla
Norfolk Island Pine
Arbutus menziesii
Pacific Madrone
Arbutus sp.
Arbutus unedo
Strawberry-tree
Arctium lappa
Greater Burdock
Arctium minus
Lesser Burdock
Arctium minus sens. str.
Lesser Burdock
Arctium nemorosum
Wood Burdock
Arctium tomentosum
Woolly Burdock
Ardisia crenata
Christmas Berry
Ardisia elliptica
Coralberry
Arenaria montana
Mountain Sandwort
Arenaria serpyllifolia
Thyme-leaved Sandwort
Argemone subfusiformis
Prickly Poppy
Aristolochia clematitis
Birthwort
Armeria maritima
Thrift
Armoracia rusticana
Horse-radish
Arrhenatherum elatius
False Oat-grass
Artemisia vulgaris
Mugwort
Arthropodium candidum
Forest#Floor Lily
Artocarpus odoratissimus
Merang
Arum italicum
Italian Lords-and-Ladies
Arum maculatum
Lords-and-Ladies
Aruncus dioicus
Buck's-beard
Arundina graminifolia
Bamboo Orchid
Asarina procumbens
Trailing Snapdragon
Asparagus officinalis
Garden Asparagus
Asparagus verticillatus
Climbing Asparagus
Asperula cynanchica
Squinancywort
Asphodelus albus
White Asphodel
Asphodelus fistulosus
Hollow-stemmed Asphodel
Asplenium adiantum-nigrum
Black Spleenwort
Asplenium ceterach
Rustyback
Asplenium marinum
Sea Spleenwort
Asplenium nidus
Bird's-nest Fern
Asplenium onopteris
Irish Spleenwort
Asplenium ruta-muraria
Wall-rue
Asplenium scolopendrium
Hart's-tongue
Asplenium septentrionale
Forked Spleenwort
Asplenium trichomanes
Maidenhair Spleenwort
Asplenium viride
Green Spleenwort
Astragalus glycyphyllos
Wild Liquorice
Astrantia major
Astrantia
Asystasia gangetica
Chinese Violet
Athyrium filix-femina
Lady-fern
Athyrium nipponicum
Athyrium
Atriplex glabriuscula
Babington's Orache
Atriplex halimus
Shrubby Orache
Atriplex laciniata
Frosted Orache
Atriplex littoralis
Grass-leaved Orache
Atriplex portulacoides
Sea-purslane