Alkaliweed          

Allenrolfea          

Alligator Juniper          

Allthorn          

Alpine Bistort      

Alpine Cancer-root          

Alpine Clover          

Alpine False Springparsley          

Alpine Fescue          

Alpine Leafybract Aster          

Alpine Lewisia          

Alpine Mountainsorrel      

Alpine Oreoxis          

Alpine Pennycress          

Alpine Shootingstar          

Alpine Timothy      

Alpine Woodsorrel          

Alpinegold          

Alsike Clover      

Alumroot          

Alyssum Evening Primrose          

Ambrosia Leaf Bur Ragweed          

American Alpine Speedwell      

American Bird's-foot Trefoil          

American Bistort      

American Black Elderberry      

American Black Nightshade          

American Bugseed          

American Century Plant      

American Dragonhead          

American Eelgrass      

American Licorice      

American Mannagrass          

American Plum      

American Pokeweed      

American Red Raspberry      

American Rockbrake          

American Sloughgrass          

American Speedwell      

American Spikenard          

American Star-thistle          

American Tarwort      

American Threefold          

American Vetch