Aberdeen Dewberry          

Absinthium          

Acinos          

Actinidia          

Adam And Eve          

Addersmeat          

Adderstongue          

Adlumia          

Adorned Hawthorn          

Aethusa          

Agrimony          

Agueweed          

Ailanthus          

Albizia          

Alder          

Alfalfa          

Alkaligrass          

Allegheny Blackberry      

Allegheny Hawkweed          

Allegheny Monkeyflower          

Allegheny Mountain Buttercup          

Allegheny Serviceberry      

Allegheny Stonecrop          

Allegheny Vine          

Alliaria          

Alpine Knapweed          

Alpine Violet          

Alsike Clover      

Alternateleaf Dogwood      

Alumroot          

Amberique-bean          

American Alumroot          

American Basswood      

American Beachgrass      

American Beakgrain          

American Beech      

American Bellflower      

American Bittercress          

American Bittersweet      

American Black Currant      

American Black Elderberry      

American Bladdernut          

American Bluehearts          

American Bugseed