Abies balsamea
balsam fir

Acer pensylvanicum
striped maple

Acer rubrum
red maple

Acer saccharinum
silver maple

Acer saccharum
sugar maple

Acer spicatum
mountain maple

Achillea millefolium
common yarrow

Actaea pachypoda
white baneberry

Actaea podocarpa
mountain bugbane

Actaea racemosa
black cohosh

Actaea rubifolia
Appalachian bugbane

Actaea rubra
red baneberry

Adiantum pedatum
maidenhair fern

Aesculus parviflora
bottlebrush buckeye

Aesculus pavia
red buckeye

Agastache foeniculum
Anise hyssop

Ageratina altissima
white snakeroot

Agrostis perennans
autumn bentgrass

Allium cernuum
nodding onion

Allium tricoccum
ramps

Alnus incana
speckled alder

Alnus serrulata
smooth alder

Amelanchier arborea
downy serviceberry

Amelanchier canadensis
Canada serviceberry

Amelanchier laevis
Allegheny serviceberry

Amelanchier spicata
running serviceberry

Ammophila breviligulata
American beach grass

Amsonia hubrictii
blue star

Amsonia tabernaemontana
bluestar

Anaphalis margaritacea
pearly everlasting

Andromeda polifolia var. glaucophylla 'Breton Blue'
Cape Breton bog rosemary

Andropogon gerardii
big bluestem

Andropogon gerardii 'Red October'
'Red October' big bluestem

Andropogon glomeratus
bushy bluestem

Anemone acutiloba
sharp-lobed hepatica

Anemone americana
blunt-lobed hepatica

Anemone canadensis
Canada windflower

Anemone multifida 'Annabella Deep Pink'
pink cut-leaved windflower

Anemone multifida 'Annabella White'
white cut-leaved windflower

Anemone virginiana
tall windflower

Angelica atropurpurea
purple stemmed angelica

Antennaria neglecta
field pussytoes

Antennaria plantaginifolia
plantain pussytoes

Aquilegia canadensis
red columbine

Aralia nudicaulis
wild sarsaparilla

Aralia racemosa
American spikenard

Aralia spinosa
devil's walking stick

Arctostaphylos uva-ursi
red bearberry

Arisaema dracontium
green dragon

Arisaema triphyllum
Jack in the pulpit

Aronia arbutifolia
red chokeberry

Aronia arbutifolia 'Brilliantissima'
red chokeberry

Aronia floribunda
purple chokeberry

Aronia melanocarpa
black chokeberry

Aruncus dioicus
goat's beard

Asarum canadense
Canada wild ginger

Asclepias exaltata
poke milkweed

Asclepias incarnata
swamp milkweed

Asclepias syriaca
common milkweed

Asclepias tuberosa
butterfly milkweed

Asimina triloba
pawpaw

Astilbe biternata
Appalachian false goat's beard

Athyrium angustum
lady fern

Athyrium angustum 'Lady in Red'
red lady fern

Athyrium angustum 'Victoriae'
lady fern