Alaskan violet 
Albany bottlebrush 
Albany daisy 
Albardine 
Albizia saman 
Alcantarea imperialis 
Alcea acaulis 
Alcea dissecta 
Alcea striata 
Alcea tabrisiana 
Alchemilla haumannii 
Alchemilla orbiculata 
Alchemilla xanthochlora 
Aldama grandiflora 
Alder buckthorn 
Aleppo Crocus 
Aleppo Milkvetch 
Aleppo oak 
Alexanders 
Alfalfa 
Alfalfa Dodder 
Algerian Iris 
Alhagi graecorum 
Alkali Goldenbush