Abrus          

Acacia          

Acid-loving Sedge          

Acidswamp Yelloweyed Grass          

Adam And Eve          

Adderstongue          

Agrimony          

Agueweed          

Aiken Hawthorn          

Ailanthus          

Air Yam          

Airplant          

Alabama Azalea          

Alabama Cherry          

Alabama Hawthorn          

Alabama Larkspur          

Alabama Leather Flower          

Alabama Lipfern          

Alabama Milkvine          

Alabama Serviceberry          

Alabama Snow-wreath          

Alabama Supplejack          

Alabama Warbonnet          

Alachua Bully          

Albany Hawthorn          

Albizia          

Alder          

Alfalfa          

Algal Bulrush          

Allegheny Blackberry      

Allegheny Brookfoam          

Allegheny Hawkweed          

Allegheny Monkeyflower          

Allegheny Mountain Goldenbanner          

Allegheny Serviceberry      

Allegheny Stonecrop          

Allegheny-spurge          

Alliaria          

Alligator-flag          

Alligatorlily          

Alligatorweed      

Aloe Yucca      

Alpine Violet          

Alsike Clover