Absinthium          

Acadian Quillwort          

Adderstongue          

Adlumia          

Adorned Hawthorn          

Agrimony          

Agueweed          

Alder          

Alfalfa          

Alkali Buttercup      

Alkaligrass          

Allegheny Blackberry      

Allegheny Hawkweed          

Allegheny Monkeyflower          

Allegheny Serviceberry      

Allegheny Vine          

Alliaria          

Alpine Arctic Cudweed          

Alpine Azalea          

Alpine Bearberry      

Alpine Bistort      

Alpine Bittercress          

Alpine Bulrush          

Alpine Milkvetch          

Alpine Mountainsorrel      

Alpine Pondweed          

Alpine Rattlesnakeroot          

Alpine Sweetgrass          

Alpine Sweetvetch      

Alpine Timothy      

Alpine Violet          

Alsike Clover      

Alternateflower Watermilfoil          

Alternateleaf Dogwood      

American Alkaligrass          

American Alpine Speedwell      

American Basswood      

American Beachgrass      

American Beech      

American Bittersweet      

American Black Currant      

American Black Elderberry      

American Bladdernut          

American Bur-reed