Exploring species in Bulgaria
Abbotswood Cinquefoil 
Acanthostachys strobilacea 
Acer tataricum 
Acmaeoderella flavofasciata 
Actinotia radiosa 
Addax 
Adonis vernalis 
Adscita obscura 
Aegilops geniculata 
Aeonium decorum 
Aeonium simsii 
Aesculapian snake 
Aethionema 
African violet 
Agelena labyrithica 
Agile frog 
Alabonia staintoniella 
Alfalfa 
Alfalfa snout beetle 
Alkanna stribrnyi 
Alpine Dark Bush-Cricket 
Alpine squill 
Alternate-leaved golden-saxifrage 
Althaea cannabina