Absinthium          

Acacia          

Adam And Eve          

Adderstongue          

African Mustard          

Agoseris          

Agrimony          

Agueweed          

Ailanthus          

Alabama Lipfern          

Alder          

Alderleaf Mountain Mahogany      

Alfalfa          

Alkali Buttercup      

Alkali Cordgrass      

Alkali Mallow          

Alkali Sacaton      

Alkali Swainsonpea          

Alkali Yellowtops          

Alkaligrass          

Allegheny Blackberry      

Allegheny Monkeyflower          

Alliaria          

Alpine Bladderpod          

Alsike Clover      

Alumroot          

Alyssum          

Amberique-bean          

American Alumroot          

American Basswood      

American Bellflower      

American Bittersweet      

American Black Elderberry      

American Black Nightshade          

American Bladdernut          

American Bluehearts          

American Bugseed          

American Bur-reed      

American Burnweed          

American Elm      

American False Pennyroyal          

American Ginseng          

American Hazelnut      

American Hogpeanut