Absinthium          

Adam And Eve          

Adderstongue          

Adlumia          

Agrimony          

Agueweed          

Ailanthus          

Alabama Azalea          

Alabama Croton          

Alabama Hawthorn          

Alabama Lipfern          

Alabama Snow-wreath          

Alabama Supplejack          

Albizia          

Alder          

Alfalfa          

Allegheny Blackberry      

Allegheny Brookfoam          

Allegheny Hawkweed          

Allegheny Monkeyflower          

Allegheny Mountain Buttercup          

Allegheny Mountain Goldenbanner          

Allegheny Plum          

Allegheny Serviceberry      

Allegheny Vine          

Allegheny-spurge          

Alliaria          

Alligatorweed      

Alpine Rockcress          

Alpine Violet          

Alsike Clover      

Alternateleaf Dogwood      

Alumroot          

Amazon Sprangletop          

Amberique-bean          

American Alumroot          

American Barberry          

American Basswood      

American Beakgrain          

American Beautyberry      

American Beech      

American Bellflower      

American Bittercress          

American Bittersweet