Araucaria araucana
Monkey-puzzle
Araucaria columnaris
New Caledonia 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
Arenaria montana
Mountain Sandwort
Arenaria serpyllifolia
Thyme-leaved Sandwort
Argemone subfusiformis
Prickly Poppy
Aristolochia clematitis
Birthwort
Armeria maritima
Thrift
Armoracia rusticana
Horse-radish
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
Asarina procumbens
Trailing Snapdragon