Absinthium
Adam And Eve
Adderstongue
Adlumia
Adoxa
Aethusa
Agoseris
Agrimony
Agueweed
Alder
Alfalfa
Alkali Buttercup
Alkali Cordgrass
Alkaligrass
Allegheny Blackberry
Allegheny Monkeyflower
Allegheny Serviceberry
Allegheny Vine
Alliaria
Alpine Bistort
Alpine Bulrush
Alpine Fescue
Alpine Groundsel
Alpine Knapweed
Alpine Milkvetch
Alpine Pondweed
Alpine Violet
Alpine Woodsia
Alsike Clover
Alternate-leaf Golden Saxifrage
Alternateflower Watermilfoil
Alternateleaf Dogwood
Alumroot
Amberique-bean
American Basswood
American Beachgrass
American Beech
American Bellflower
American Bittersweet
American Black Currant
American Black Elderberry
American Bladdernut
American Bugseed
American Bur-reed