Absinthium          

Acadian Quillwort          

Acinos          

Adam And Eve          

Adderstongue          

Adirondack Blackberry          

Adlumia          

Adorned Hawthorn          

Agrimony          

Agueweed          

Alder          

Aleutian Maidenhair          

Alfalfa          

Alkaligrass          

Allegheny Blackberry      

Allegheny Hawkweed          

Allegheny Monkeyflower          

Allegheny Mountain Buttercup          

Allegheny Serviceberry      

Allegheny Vine          

Alliaria          

Alpine Bistort      

Alpine Bulrush          

Alpine Fescue          

Alpine Knapweed          

Alpine Milkvetch          

Alpine Pondweed          

Alpine Rattlesnakeroot          

Alpine Sweetgrass          

Alpine Sweetvetch      

Alpine Violet          

Alpine Woodsia          

Alsike Clover      

Alternateflower Watermilfoil          

Alternateleaf Dogwood      

American Basswood      

American Beachgrass      

American Beech      

American Bittersweet      

American Black Currant      

American Black Elderberry      

American Bladdernut          

American Bur-reed      

American Burnweed