Index
- Abrus precatorius, rosary pea
- Abutilon hulseanum, red Indian mallow
- Abutilon theophrasti, butter-print velvet-leaf
- Acacia choriophylla, tamarindillo, thornless acacia
- Acacia farnesiana, sweet acacia
- Acacia pinetorum, pine acacia
- Acacia tortuosa, long-spine acacia, steel acacia
- Acanthocereus tetragonus, dildoe cactus, barbed wire cactus
- Acer negundo, box-elder
- Acer platanoides, Norway maple
- Acer rubrum, red maple
- Acer saccharinum, silver maple
- Acer saccharum, sugar maple
- Acer saccharum subsp. floridanum, Florida maple
- Acer saccharum subsp. leucoderme, sugar maple
- Acer spicatum, mountain maple
- Achillea millefolium, yarrow, milfoil
- Achyranthes aspera, devil's horsewhip
- Acmella oppositifolia var. repens, button of gold, oppositeleaf spotflower
- Acoelorraphe wrightii, parotis palm
- Acrostichum aureum, golden golden leather fern
- Acrostichum danaeifolium, giant leather fern
- Actaea pachypoda, white baneberry, doll's eyes
- Adiantum capillus-veneris, Venus maidenhair fern
- Adiantum caudatum, tailed maidenhair fern
- Adiantum pedatum, northern maidenhair fern
- Adiantum tenerum, fan maidenhair fern, brittle maidenhair fern
- Adlumia fungosa, Allegheny-vine
- Aeschynomene pratensis, meadow jointvetch
- Aeschynomene viscidula, prostrate jointvetch
- Aesculus pavia, red buckeye
- Agalinis divaricata, pineland falsefoxglove
- Agalinis fasciculata, beach falsefoxglove, purple falsefoxglove
- Agalinis filicaulis, Jackson falsefoxglove
- Agalinis filifolia, Seminole falsefoxglove
- Agalinis linifolia, flax-leaf falsefoxglove
- Agalinis maritima, saltmarsh falsefoxglove
- Agalinis obtusifolia, ten-lobe falsefoxglove
- Agalinis purpurea, large purple false-foxglove, purple gerardia
- Agalinis setacea, threadleaf falsefoxglove
- Agalinis tenuifolia, slender falsefoxglove
- Agarista populifolia, Florida hobblebush, pipewood, agarista
- Agave decipiens, false sisal
- Ageratina altissima, white snakeroot
- Ageratina aromatica, wild hoarhound
- Ageratina jucunda, ageratina
- Agrimonia incisa, harvest lice, incised agmony
- Agrimonia striata, roadside agrimony
- Ajuga reptans, carpet-bugle
- Albizia julibrissin, mimosa, silk tree
- Albizia lebbeck, woman's-tongue
- Alcea rosea, hollyhock
- Aletris aurea, golden colic-root
- Aletris lutea, yellow colic-root
- Aletris obovata, southern colic-root, white colic-root
- Allamanda cathartica, golden-trumpet
- Allamanda violaceae, purple allamanda
- Alliaria petiolata, garlic-mustard
- Allium canadense, wild onion, meadow garlic
- Allium vineale, field garlic
- Alnus incana subsp. rugosa, speckled alder
- Alnus serrulata, hazel alder
- Aloe vera, aloe
- Alpinia zerumbet, shell ginger
- Alternanthera flavescens, yellow joyweed
- Alternanthera philoxeroides, alligator-weed
- Alvaradoa amorphoides, alvardoa
- Amaranthus australis, southern amaranth, giant amaranth
- Amaranthus blitum, prostrate pigweed
- Amaranthus hybridus, common pigweed
- Amaranthus viridis, green amaranth
- Ambrosia artemisiifolia, annual ragweed
- Ambrosia hispida, coastal ragweed
- Ambrosia trifida, giant ragweed
- Amelanchier arborea, serviceberry
- Ammannia coccinea, scarlet ammannia
- Ammannia latifolia, pink redstem, toothcups
- Amorpha fruticosa, false indigo-bush, bastard-indigo
- Amorpha herbacea, cluster-spike indigo-bush
- Ampelopsis arborea, pepper-vine
- Amphicarpum muhlenbergianum, blue maidencane
- Amsonia ciliata, slimpod, bluestar, blue dogbane
- Amyris elemifera, torchwood
- Anagallis arvensis, scarlet pimpernel
- Andromeda polifolia var. glaucophylla, bog rosemary
- Andropogon brachystachyus, short-spike bluestem
- Andropogon glomeratus, bushy bluestem
- Andropogon glomeratus var. glaucopsis, purple bluestem
- Andropogon ternarius, splitbeard bluestem
- Andropogon virginicus, broomsedge bluestem
- Andropogon virginicus var. decipiens, broomsedge bluestem
- Andropogon virginicus var. glaucus, chalky bluestem
- Anemia adiantifolia, pine fern
- Anemone americana, liverleaf, round-leaf hepatica
- Anemonella thalictroides, rue-anemone
- Angadenia berteroi, pineland allamanda
- Annona glabra, pond-apple, custard-apple
- Annona squamosa, sugar-apple, sweetsop
- Anredera vesicaria, Madiera vine
- Antennaria plantaginifolia, plantain-leaved pussytoes
- Antigonon leptopus, coral-vine
- Apios americana, American groundnut
- Apocynum cannabinum, Indian hemp, dogbane
- Aquilegia canadensis, wild columbine, red columbine
- arachis glabrata, perrenial peanut
- Aralia racemosa, American spikenard
- Aralia spinosa, devil's-walkingstick
- Arctium lappa, burdock
- Ardisia crenata, marlberry
- Ardisia escallonioides, marlberry, marbleberry
- Arenaria serpyllifolia, thyme-leaved sandwort
- Argemone albiflora, Carolina pricklypoppy
- Argemone mexicana, Mexican pricklypoppy
- Argusia gnaphalodes, sea-lavender, sea-rosemary
- Argythamnia blodgettii, Blodgett's wild-mercury
- Arisaema dracontium, green dragon
- Arisaema triphyllum, jack-in-the-pulpit
- Aristida purpurascens, arrowfeather
- Aristida spiciformis, bottlebrush grass
- Aristida stricta var. beyrichiana, wiregrass
- Aristolochia serpentaria, snakeroot
- Aristolochia tomentosa, wooly Dutchman's pipe
- Arnoglossum floridanum, Indian-plantain
- Arnoglossum ovatum, egg-leaf Indian-plantain
- Aronia melanocarpa, black-fruited chokeberry
- Arundinaria gigantea, switchcane, giant cane
- Arundo donax, giant-reed
- Asarum arifolium, heartleaf, wild ginger
- Asarum canadense, wild ginger
- Asclepias cinerea, Carolina milkweed
- Asclepias connivens, large-flower milkweed
- Asclepias curassavica, scarlet milkweed
- Asclepias curtissii, Curtis' milkweed
- Asclepias exaltata, tall milkweed
- Asclepias feayi, Feay's milkweed
- Asclepias humistrata, sandhill milkweed
- Asclepias incarnata, swamp milkweed
- Asclepias lanceolata, red (fen-flower) milkweed
- Asclepias longifolia, long-leaf milkweed
- Asclepias michauxii, milkweed
- Asclepias obovata, pineland milkweed
- Asclepias pedicellata, Savannah milkweed
- Asclepias perennis, aquatic milkweed
- asclepias syriaca, common milkweed
- Asclepias tuberosa, butterflyweed
- Asclepias variegata, variegated milkweed
- Asclepias verticillata, whorl-leaf milkweed
- Asclepias viridiflora, green-flowered milkweed
- Asclepias viridula, southern (=green) milkweed
- Asimina angustifolia, narrowleaf pawpaw
- Asimina incana, polecat bush, flag pawpaw
- Asimina obovata, flag pawpaw
- Asimina parviflora, small-fruited pawpaw
- Asimina pygmea, dwarf pawpaw
- Asimina reticulata, dog banana, reticulate pawpaw
- Asimina tetramera, four-petal pawpaw
- Asimina triloba, common pawpaw, dog-banana, Indian-banana
- Asparagus aethiopicus, Sprenger's asparagus-fern
- Asparagus officinalis, garden aparugus-fern asparagus
- Asparagus setaceus, asparagus-fern
- Asplenium erosum, auricled spleenwort
- Asplenium heterochroum, Wagner's spleenwort, varicolored spleenwort
- Asplenium monanthes, San Felasco spleenwort
- Asplenium platyneuron, ebony spleenwort
- Asplenium serratum, bird's nest spleenwort
- Asplenium verecundum, delicate spleenwort, modest speenwort
- Aureolaria flava, smooth yellow false foxgove
- Aureolaria pedicularia var. pectinata, fernleaf yellow false foxglove
- Avicennia germinans, black mangrove
- Axonopus fissifolius, common carpetgrass
- Axonopus furcatus, big carpetgrass
- Azolla caroliniana, mosquito fern