American wigeon 
American Wintergreen 
American witch-hazel 
American woodcock 
Americobdella valdiviana 
Amerila astreus 
Amerila crokeri 
Amerila madagascariensis 
Amerila omissa 
Ametastegia carpini 
Amethyst broomrape 
Amethyst Deceiver 
Amethyst Meadow Squill 
Amethyst sea holly 
Amethyst shooting star 
Amethyst Sunbird 
Amethyst Woodstar 
Amethyst-throated sunangel 
Amicta cabrerai 
Amicta zelleri 
Ammalo helops 
Ammatho cuneonotatus 
Ammi majus 
Ammophila aberti