Aberdeen Dewberry          

Acinos          

Adam And Eve          

Adderstongue          

Adlumia          

Aethusa          

Agrimony          

Agueweed          

Ailanthus          

Alabama Lipfern          

Alabama Supplejack          

Albizia          

Alder          

Alfalfa          

Alkaligrass          

Allegheny Blackberry      

Allegheny Brookfoam          

Allegheny Hawkweed          

Allegheny Monkeyflower          

Allegheny Mountain Buttercup          

Allegheny Mountain Goldenbanner          

Allegheny Serviceberry      

Allegheny Stonecrop          

Allegheny Vine          

Allegheny-spurge          

Alliaria          

Alligator-flag          

Alligatorweed      

Alpine Knapweed          

Alpine Rockcress          

Alpine Violet          

Alsike Clover      

Alternateleaf Dogwood      

Alumroot          

Amazon Sprangletop          

Amberique-bean          

American Alumroot          

American Barberry          

American Basswood      

American Beakgrain          

American Beech      

American Bellflower      

American Bittercress          

American Bittersweet