Alisma plantago-aquatica
Water-plantain
Allamanda blanchetii
Purple Allamanda
Allamanda cathartica
Golden Trumpet
Allamanda schottii
Bush llamanda
Alliaria petiolata
Garlic Mustard
Allium ampeloprasum
Allium cepa
Onion
Allium oleraceum
Field Garlic
Allium paradoxum
Few-flowered Garlic
Allium roseum
Rosy Garlic
Allium schoenoprasum
Chives
Allium siculum
Honey Garlic
Allium trifoliatum
Hirsute Garlic
Allium triquetrum
Three-cornered Garlic
Allium tuberosum
Chinese Chives
Allium ursinum
Ramsons
Allium vineale
Wild Onion
Alnus cordata
Italian Alder
Alnus glutinosa
Alder
Alocasia macrorrhizos
Giant Taro
Alocasia sanderiana
Kris plant
Alopecurus aequalis
Orange Foxtail
Alopecurus geniculatus
Marsh Foxtail
Alopecurus pratensis
Meadow Foxtail
Alpinia purpurata
Red Ginger
Alstonia pneumatophora
Marsh Pulai
Alstroemeria brasiliensis
Alstroemeria
Alstroemeria ligtu
Peruvian lily
Alternanthera bettzickiana
Calico-plant
Alternanthera brasiliana
Ruby Leaf
Alternanthera ficoidea
Joseph's Coat
Althaea officinalis
Marsh-mallow
Alyogyne huegelii
Blue Hibiscus
Alysicarpus ovalifolius
Alyce Clover
Alysicarpus vaginalis
Alyce Clover
Amaranthus hybridus
Green Amaranth
Amaranthus retroflexus
Common Amaranth
Amaryllis belladonna
Jersey Lily
Ambrosia artemisiifolia
Ragweed
Amelanchier lamarckii
Juneberry
Ammi majus
Bullwort
Ammophila arenaria
Marram
Amorphophallus prainii
Voodoo Lily
Amsinckia micrantha
Common Fiddleneck
Anacamptis morio
Green-winged Orchid
Anacamptis pyramidalis
Pyramidal Orchid
Anamirta cocculus
Indian Berry
Anaphalis margaritacea
Pearly Everlasting
Anchusa azurea
Garden Anchusa
Andrographis paniculata
Creat
Andromeda polifolia
Bog-rosemary
Androsace villosa
Hairy Androsace
Anemone nemorosa
Wood Anemone
Anemone ranunculoides
Yellow Anemone
Anemone sylvestris
Snowdrop Anemone
Angelica archangelica
Garden Angelica
Angelica sylvestris
Wild Angelica
Annona squamosa
Sugar Apples
Anomodon viticulosus
Rambling Tail-moss
Antennaria dioica
Mountain Everlasting
Anthemis arvensis
Corn Chamomile
Anthemis cotula
Stinking Chamomile
Anthoxanthum odoratum
Sweet Vernal-grass
Anthriscus caucalis
Bur Chervil
Anthriscus sylvestris
Cow Parsley
Anthurium andraeanum
Laceleaf
Anthurium hookerii
Anthurium scherzerianum
Flamingo Flower
Anthurium schlechtendalii
Pheasant's Tail
Anthyllis vulneraria
Kidney Vetch