Scientific Names (also known as Latin Names) are the universally recognized way to distinctly refer to individual species of plants. Common Names will vary from region to region, but Scientific Names are consistent across regions. However, that doesn't mean that there is only one Scientific Name for each species; often there are several.

Please note that over the past couple of years many Scientific names for species have been changing due to DNA research. Therefore the Scientific name that you see on this site may not be the one that you are used to seeing for a particular species. For a list of those "Traditional" Scientific Names, CLICK HERE.

This is a list of all of the Scientific Names of species that appear on this site.

List of Scientific Names for all species on this site (each species appears only once).
List of ALL Scientific Names for all species on this site.
List if "Traditional" Scientific Names for all species on this site (each species appears only once).
List of all Scientific Genus Names on this site.

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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Abies balsamea (Balsam Fir)
Abutilon abutilon (Velvetleaf)
Abutilon avicennae (Velvetleaf)
Abutilon theophrasti (Velvetleaf)
Acer negundo (Manitoba Maple)
Acer nigrum (Black Maple)
Acer platanoides (Norway Maple)
Acer saccharum (Sugar Maple)
Achillea borealis (Yarrow)
Achillea millefolium (Yarrow)
Achillea nigrescens (Yarrow)
Achroanthes unifolia (Green Adder's Mouth)
Acorus calamus (Sweetflag)
Acrostichum platyneuros (Ebony Spleenwort)
Actaea pachypoda (White Baneberry)
Actaea rubra (Red Baneberry)
Actinea acaulis (Lakeside Daisy)
Actinea herbacea (Lakeside Daisy)
Adiantum pedatum (Maidenhair Fern)
Adicea pumila (Clearweed)
Aesculus glabra (Ohio Buckeye)
Aesculus hippocastanum (Horsechestnut)
Agastache nepetoides (Yellow Giant Hyssop)
Agrimonia gryposepala (Agrimony)
Agrimonia hirsuta (Agrimony)
Agrimonia parviflora (Small-flowered Agrimony)
Agropyron caninum (Wild Rye)
Agropyron psammophilum (Great Lakes Wheat Grass)
Agropyron tenerum (Wild Rye)
Agrostis cryptandra (Sand Dropseed)
Ailanthus altissima (Ailanthus)
Ailanthus glandulosus (Ailanthus)
Ailanthus peregrina (Ailanthus)
Aira macrantha (Prairie Junegrass)
Aletris farinosa (Colicroot)
Alliaria alliaria (Garlic Mustard)
Alliaria officinalis (Garlic Mustard)
Alliaria petiolata (Garlic Mustard)
Allium cernuum (Nodding Wild Onion)
Allium schoenoprasum (Chives)
Allium tricoccum (Wild Leek)
Alnus glutinosa (European Black Alder)
Alnus incana (Speckled Alder)
Alnus viridis (Green Alder)
Alsine michauxii (Rock Sandwort)
Alyssum incana (Hoary Alyssum)
Amaranthus retroflexus (Green Amaranth)
Amelanchier alnifolia (Low Serviceberry)
Amelanchier arborea (Downy Serviceberry)
Amelanchier bartramiana (Mountain Juneberry)
Amelanchier canadensis (Swamp Serviceberry)
Amelanchier humilis (Low Serviceberry)
Amelanchier intermedia (Swamp Serviceberry)
Amelanchier laevis (Smooth Serviceberry)
Amerorchis rotundifolia (Small Round-leaved Orchid)
Ammophila arenaria (American Beach Grass)
Ammophila arundinacea (American Beach Grass)
Ammophila breviligulata (American Beach Grass)
Amorpha fruticosa (False Indigo)
Anchistea virginicum (Virginia Chain Fern)
Andromeda glaucophylla (Bog Rosemary)
Andromeda polifolia (Bog Rosemary)
Andropogon chrysocomus (Big Bluestem)
Andropogon furcatus (Big Bluestem)
Andropogon gerardii (Big Bluestem)
Andropogon hallii (Big Bluestem)
Andropogon littoralis (Little Bluestem)
Andropogon nutans (Indian Grass)
Andropogon provincialis (Big Bluestem)
Andropogon scoparius (Little Bluestem)
Anemone acutiloba (Sharp-lobed Hepatica)
Anemone americana (Round-lobed Hepatica)
Anemone borealis (Small-flowered Anemone)
Anemone canadensis (Canada Anemone)
Anemone cylindrica (Long-fruited Anemone)
Anemone groenlandica (Goldthread)
Anemone hepatica (Round-lobed Hepatica)
Anemone parviflora (Small-flowered Anemone)
Anemone quinquefolia (Wood Anemone)
Anemone virginiana (Thimbleweed)
Anemonella thalictroides (Rue Anemone)
Angelica atropurpurea (Great Angelica)
Angelica triquinata (Great Angelica)
Anonymos caroliensis (Hairy Puccoon)
Anoplanthus uniflorus (One-flowered Cancerroot)
Antennaria campestris (Field Pussytoes)
Antennaria fallax (Parlin's Pussytoes)
Antennaria farwelli (Parlin's Pussytoes)
Antennaria munda (Parlin's Pussytoes)
Antennaria neglecta (Field Pussytoes)
Antennaria parlinii (Parlin's Pussytoes)
Antennaria plataginifolia (Parlin's Pussytoes)
Anthoxanthum hirta (Sweetgrass)
Anthoxanthum hirtum (Sweetgrass)
Anthriscus sylvestris (Wild Chervil)
Antirrhinum dalmaticum (Dalmation Toadflax)
Antirrhinum elatine (Sharpleaf Cancerwort)
Antirrhinum minus (Dwarf Snapdragon)
Antirrhinum spurium (Roundleaf Cancerwort)
Aphyllon uniflorum (One-flowered Cancerroot)
Aphyllon uniflorum (One-flowered Cancerroot)
Aquilegia canadensis (Wild Columbine)
Aquilegia coccinea (Wild Columbine)
Aquilegia flaviflora (Wild Columbine)
Arabidopsis lyrata (Lyre-leaved Rock Cress)
Arabidopsis thaliana (Mouse Ear Cress)
Arabis douglassii (Purple Cress)
Arabis hirsuta (Hairy Rock Cress)
Arabis laevigata (Smooth Rock Cress)
Arabis lyrata (Lyre-leaved Rock Cress)
Arabis ovata (Hairy Rock Cress)
Arabis petiolata (Garlic Mustard)
Arabis pycnocarpa (Hairy Rock Cress)
Arabis reptans (Carolina Whitlow Grass)
Arabis thaliana (Mouse Ear Cress)
Aralia elata (Hercules' Club)
Aralia quinquefolia (Ginseng)
Aralia spinosa (Hercules' Club)
Aralia trifolia (Dwarf Ginseng)
Arbutus uva-ursi (Bearberry)
Archangelica atropurpurea (Great Angelica)
Arctium minus (Common Burdock)
Arctostaphylos uva-ursi (Bearberry)
Arenaria leptoclados (Thyme-leaved Sandwort)
Arenaria michauxii (Rock Sandwort)
Arenaria serpyllifolia (Thyme-leaved Sandwort)
Arenaria stricta (Rock Sandwort)
Arethusa bulbosa (Arethusa)
Arethusa ophioglossoides (Rose Pogonia)
Argentia anserina (Silverweed)
Argentia litoralis (Silverweed)
Argentia vulgaris (Silverweed)
Argentina argentea (Silverweed)
Arisaema atrorubens (Jack-in-the-Pulpit)
Arisaema dracontium (Green Dragon)
Arisaema triphyllum (Jack-in-the-Pulpit)
Aristolochia durior (Dutchman's Pipe)
Aristolochia macrophylla (Dutchman's Pipe)
Aristolochia sipho (Dutchman's Pipe)
Aronia alnifolia (Low Serviceberry)
Aronia melanocarpa (Chokeberry)
Arum dracontium (Green Dragon)
Arum triphyllum (Jack-in-the-Pulpit)
Arundo arenaria (American Beach Grass)
Arundo australis (Phragmites)
Arundo phragmites (Phragmites)
Asarum canadense (Wild Ginger)
Asclepias exaltata (Poke Milkweed)
Asclepias incarnata (Swamp Milkweed)
Asclepias nigra (Black Swallowwort)
Asclepias purpurascens (Purple Milkweed)
Asclepias syriaca (Common Milkweed)
Asclepias tuberosa (Butterfly Milkweed)
Asclepias verticillata (Whorled Milkweed)
Asparagus officinalis (Asparagus)
Asperula odorata (Sweet Woodruff)
Aspidium acrostichoides (Christmas Fern)
Aspidium aculeatum (Braun's Holly Fern)
Aspidium angustum (Lady Fern)
Aspidium braunii (Braun's Holly Fern)
Aspidium cristatum (Crested Shield Fern)
Aspidium filix-mas (Male Fern)
Aspidium goldianum (Goldie's Fern)
Aspidium intermedium (Intermediate Wood Fern)
Aspidium lonchitis (Northern Holly Fern)
Aspidium marginale (Marginal Shield Fern)
Aspidium noveboracense (New York Fern)
Aspidium spinulosum (Spinulose Wood Fern)
Aspidium thelypteris (Marsh Fern)
Asplenium acrostichoides (Silvery Glade Fern)
Asplenium angustifolium (Narrow-leaved Glade Fern)
Asplenium cryptolepis (Wall Rue)
Asplenium ebeneum (Ebony Spleenwort)
Asplenium filix-femina (Lady Fern)
Asplenium melanocaulon (Maidenhair Spleenwort)
Asplenium platyneuron (Ebony Spleenwort)
Asplenium pycnocarpon (Narrow-leaved Glade Fern)
Asplenium rhizophyllum (Walking Fern)
Asplenium ruta-muraria (Wall Rue)
Asplenium scolopendrium (Hart's Tongue Fern)
Asplenium thelypterioides (Silvery Glade Fern)
Asplenium trichomanes (Maidenhair Spleenwort)
Asplenium trichomanes-ramosum (Green Spleenwort)
Asplenium viride (Green Spleenwort)
Asprella hystrix (Bottle-brush Grass)
Asprella oryzoides (Rice Cut Grass)
Aster acuminatus (Whorled Aster)
Aster angustus (Rayless Annual Aster)
Aster azureus (Azure Aster)
Aster borealis (Rush Aster)
Aster brachyactis (Rayless Annual Aster)
Aster calvus (Purple-stemmed Aster)
Aster chasei (Shreber's Aster)
Aster choralis (Heart-leaved Aster)
Aster ciliolatus (Fringed Blue Aster)
Aster compactus (Purple-stemmed Aster)
Aster condupicatus (Purple-stemmed Aster)
Aster cordifolius (Heart-leaved Aster)
Aster corymbosus (White Wood Aster)
Aster curvescens (Shreber's Aster)
Aster demissus (Purple-stemmed Aster)
Aster diffusus (Calico Aster)
Aster diffusus (Ontario Aster)
Aster divaricatus (White Wood Aster)
Aster divaricatus (Whorled Aster)
Aster ericoides (Heath Aster)
Aster finkii (Heart-leaved Aster)
Aster firmus (Purple-stemmed Aster)
Aster glomeratus (Shreber's Aster)
Aster hesperius (Panicled Aster)
Aster hirtellus (Arrow-leaved Aster)
Aster ianthinus (Large-leaved Aster)
Aster junceus (Rush Aster)
Aster junciformis (Rush Aster)
Aster laevis (Smooth Aster)
Aster lanceolatus (Panicled Aster)
Aster lateriflorus (Calico Aster)
Aster lateriflorus (Ontario Aster)
Aster laurentianus (Rayless Annual Aster)
Aster laxifolius (Rush Aster)
Aster lindleyanus (Fringed Blue Aster)
Aster linifolius (Small Salt Marsh Aster)
Aster lowrieanus (Heart-leaved Aster)
Aster lucidulus (Purple-stemmed Aster)
Aster maccallae (Fringed Blue Aster)
Aster macrophyllus (Large-leaved Aster)
Aster missouriensis (Ontario Aster)
Aster multiflorus (Heath Aster)
Aster multiformis (Large-leaved Aster)
Aster nemoralis (Bog Aster)
Aster nobilis (Large-leaved Aster)
Aster novae-angliae (New England Aster)
Aster ontarionis (Ontario Aster)
Aster oolentangiensis (Azure Aster)
Aster paniculatus (Panicled Aster)
Aster pansus (Heath Aster)
Aster pantotrichus (Ontario Aster)
Aster pilosus (Frost Aster)
Aster plumarius (Heart-leaved Aster)
Aster polycephalus (Heath Aster)
Aster praealtus (Willow Aster)
Aster ptarmicoides (Upland White Aster)
Aster pubentior (Flat-topped White Aster)
Aster puniceus (Purple-stemmed Aster)
Aster riciniatus (Large-leaved Aster)
Aster roscidus (Large-leaved Aster)
Aster roseus (New England Aster)
Aster sagittifolius (Arrow-leaved Aster)
Aster sagittifolius (Heart-leaved Aster)
Aster saundersii (Fringed Blue Aster)
Aster schreberi (Shreber's Aster)
Aster simplex (Panicled Aster)
Aster subgeminatus (Fringed Blue Aster)
Aster subulatus (Small Salt Marsh Aster)
Aster tradescantii (Ontario Aster)
Aster umbellatus (Flat-topped White Aster)
Aster urophyllus (Arrow-leaved Aster)
Aster vimineus (Calico Aster)
Aster violaris (Large-leaved Aster)
Aster wilsoni (Fringed Blue Aster)
Aster wilsonii (Fringed Blue Aster)
Aster x amethystinus (Amethyst Aster)
Astragalus canadensis (Canada Milkvetch)
Atheropogon curtipendulus (Side Oats Gramma)
Athyrium acrostichoides (Silvery Glade Fern)
Athyrium angustum (Lady Fern)
Athyrium filix-femina (Lady Fern)
Athyrium pycnocarpon (Narrow-leaved Glade Fern)
Athyrium pycnocarpum (Silvery Glade Fern)
Athyrium thelypterioides (Silvery Glade Fern)
Atropa physalodes (Apple-of-Peru)

Barbarea arcuata (Yellow Rocket)
Barbarea barbarea (Yellow Rocket)
Barbarea stricta (Yellow Rocket)
Barbarea vulgaris (Yellow Rocket)
Bartonia tenella (Yellow Bartonia)
Bartonia virginica (Yellow Bartonia)
Bartsia coccinea (Indian Paintbrush)
Batschia caroliniensis (Hairy Puccoon)
Behen vulgaris (Bladder Campion)
Bellis perennis (English Daisy)
Berberis thunbergii (Japanese Barberry)
Berberis vulgaris (European Barberry)
Berteroa incana (Hoary Alyssum)
Betula borealis (Dwarf Birch)
Betula glandulifera (Dwarf Birch)
Betula lenta (Cherry Birch)
Betula papyrifera (White Birch)
Betula pendula (European White Birch)
Betula populifolia (Gray Birch)
Betula pumila (Dwarf Birch)
Bicuculla canadensis (Squirrel Corn)
Bicuculla cucullaria (Dutchman's Breeches)
Bidens beckii (Water Marigold)
Bilderdykia convolulus (Eurasian Black Bindweed)
Bistorta vivipara (Alpine Bistort)
Blechnum virginicum (Virginia Chain Fern)
Blephariglottis blephariglottis (White Fringed Orchid)
Blephariglottis lacera (Ragged Fringed Orchid)
Blephariglottis leucophaea (Prairie White Fringed Orchid)
Blephariglottis psycodes (Smaller Purple Fringed Orchid)
Blephilia ciliata (Downy Wood Mint)
Borodinia laevigata (Smooth Rock Cress)
Botrychium coulteri (Leathery Grape Fern)
Botrychium dissectum (Cut-leaved Grape Fern)
Botrychium lunaria minganense (Mingan Moonwort)
Botrychium matricariifolium (Daisy Leaf Grape Fern)
Botrychium minganense (Mingan Moonwort)
Botrychium multifidum (Leathery Grape Fern)
Botrychium obliquum (Cut-leaved Grape Fern)
Botrychium ternatum (Leathery Grape Fern)
Botrychium virginianum (Rattlesnake Fern)
Botrypus virginianus (Rattlesnake Fern)
Bouteloua curtipendula (Side Oats Gramma)
Bouteloua racemosa (Side Oats Gramma)
Brachyactis angusta (Rayless Annual Aster)
Brachyactis ciliata (Rayless Annual Aster)
Brasenia peltata (Water Shield)
Brasenia schreberi (Water Shield)
Brauneria pallida (Pale Purple Coneflower)
Brauneria purpurea (Purple Coneflower)
Bromus commutatus (Smooth Brome)
Bromus kalmii (Kalm's Brome)
Bromus purgans (Kalm's Brome)
Buchnera americana (Bluehearts)
Buphthalum helianthoides (Oxeye)
Bursa bursa-pastoris (Shepherd's Purse)

Cactus humifusus (Prickly Pear Cactus)
Calamintha arkansana (Low Calamint)
Calamintha arkansanum (Low Calamint)
Calamintha clinopodium (Wild Basil)
Calamintha nuttallii (Low Calamint)
Calla palustris (Water Arum)
Callitriche autumnalis (Hermaphrodite Water Starwort)
Callitriche hermaphroditica (Hermaphrodite Water Starwort)
Calopogon pulchellus (Grass Pink)
Calopogon tuberosus (Grass Pink)
Caltha palustris (Marsh Marigold)
Calypso borealis (Calypso)
Calypso bulbosa (Calypso)
Calystegia arvensis (Field Bindweed)
Calystegia inflata (Hedge Bindweed)
Calystegia sepium (Hedge Bindweed)
Calystegia spithamaea (Upright Bindweed)
Cammarum hyemale (Winter Aconite)
Campanula americana (Tall Bellflower)
Campanula aparinoides (Marsh Bellflower)
Campanula glomerata (Clustered Bellflower)
Campanula linifolia (Harebell)
Campanula perfoliata (Venus's Looking-glass)
Campanula rapunculoides (Creeping Bellflower)
Campanula rotundifolia (Harebell)
Campanula scheuchzeri (Harebell)
Campanula uliginosa (Marsh Bellflower)
Campanulastrum uliginosa (Marsh Bellflower)
Campe barbarea (Yellow Rocket)
Campe stricta (Yellow Rocket)
Campsis radicans (Trumpet Creeper)
Camptosorus rhizophyllus (Walking Fern)
Capnoides aureum (Golden Corydalis)
Capnoides flavulum (Yellow Corydalis)
Capsella bursa-pastoris (Shepherd's Purse)
Cardamine bulbosa (Spring Cress)
Cardamine douglassii (Purple Cress)
Cardamine hirsuta (Hairy Bitter Cress)
Cardamine pratensis (Cuckooflower)
Cardamine purpurea (Purple Cress)
Carduus arvensis (Canada Thistle)
Carduus discolor (Field Thistle)
Carduus leiophyllus (Nodding Thistle)
Carduus macrolepis (Nodding Thistle)
Carduus nutans (Nodding Thistle)
Carduus pitcheri (Pitcher's Thistle)
Carduus thoermeri (Nodding Thistle)
Carduus vulgaris (Bull Thistle)
Carex albursina (White Bear Sedge)
Carex aurea (Golden Sedge)
Carex brevior (Plains Oval Sedge)
Carex canescens (Silvery Sedge)
Carex convoluta (Rosy Sedge)
Carex hirtifolia (Hairy Wood Sedge)
Carex intumescens (Bladder Sedge)
Carex lacustris (Lake Sedge)
Carex pedunculata (Long-stalked Sedge)
Carex plantaginea (Plantain-leaved Sedge)
Carex pubescens (Hairy Wood Sedge)
Carex riparia (Lake Sedge)
Carex rosea (Rosy Sedge)
Carex tuckermanii (Tuckerman's Sedge)
Carpogymnia robertiana (Robert's Fern)
Carya cordiformis (Bitternut Hickory)
Carya laciniosa (Shellbark Hickory)
Cassia hebecarpa (Wild Senna)
Cassia marilandica (Wild Senna)
Castanea dentata (American Chestnut)
Castilleja coccinea (Indian Paintbrush)
Caucalis anthriscus (Japanese Hedge Parsley)
Caucalis japonica (Japanese Hedge Parsley)
Caulophyllum giganteum (Blue Cohosh)
Caulophyllum thalictroides (Blue Cohosh)
Ceanothus herbaceus (Narrow-leaved New Jersey Tea)
Ceanothus ovatus (Narrow-leaved New Jersey Tea)
Celastrus alatus (Winged Euonymus)
Centaurium erythraea (Centaury)
Centaurium minus (Centaury)
Centaurium pulchellum (Branching Centaury)
Centaurium umbellatum (Centaury)
Cephalanthus occidentalis (Buttonbush)
Cerastium arvense (Field Chickweed)
Cerastium caespitosum (Mouse-ear Chickweed)
Cerastium fontanum (Mouse-ear Chickweed)
Cerastium holosteoides (Mouse-ear Chickweed)
Cerastium tomentosum (Snow in Summer)
Cerastium triviale (Mouse-ear Chickweed)
Cerastium vulgatum (Mouse-ear Chickweed)
Ceratophyllum demersum (Common Coontail)
Cercis canadensis (Redbud)
Chaenorrhinum minus (Dwarf Snapdragon)
Chamaedaphne calyculata (Leatherleaf)
Chamaelirium carolinianum (Devil's Bit)
Chamaelirium luteum (Devil's Bit)
Chamaelirium obovale (Devil's Bit)
Chamaenerion latifolium (River Beauty)
Chamaesyce maculata (Milk Purslane)
Chamaesyce supina (Milk Purslane)
Chamerion latifolium (River Beauty)
Chelidonium diphyllum (Celandine Poppy)
Chelidonium majus (Celandine)
Chelone digitalis (Foxglove Beardtongue)
Chelone glabra (Turtlehead)
Chelone hirsutus (Hairy Beardtongue)
Chenopodium album (Lamb's Quarters)
Chenopodium lanceolatum (Lamb's Quarters)
Chenopodium paganum (Lamb's Quarters)
Chenopodium viride (Lamb's Quarters)
Chimaphila maculata (Striped Wintergreen)
Chimaphila umbellata (Pipsissewa)
Chimaphilla corymbosa (Pipsissewa)
Chiogenes hispidula (Creeping Snowberry)
Chloris curtipendula (Side Oats Gramma)
Chrysanthemum lacustre (Oxeye Daisy)
Chrysanthemum leucanthemum (Oxeye Daisy)
Chrysanthemum tanacetum (Tansy)
Chrysanthemum vulgare (Tansy)
Chrysocoma gigantea (Tall Ironweed)
Chrysocoma graminifolia (Grass-leaved Goldenrod)
Chrysopogon avenaceus (Indian Grass)
Chrysopogon nutans (Indian Grass)
Chrysosplenium americanum (Golden Saxifrage)
Cichorium intybus (Chicory)
Cicuta bulbifera (Bulb-bearing Water Hemlock)
Cicuta maculata (Water Hemlock)
Cicuta occidentalis (Water Hemlock)
Circaea canadensis (Enchanter's Nightshade)
Circaea lutetiana (Enchanter's Nightshade)
Circaea quadrisulcata (Enchanter's Nightshade)
Cirsium arvense (Canada Thistle)
Cirsium discolor (Field Thistle)
Cirsium hillii (Hill's Thistle)
Cirsium lanatum (Canada Thistle)
Cirsium lanceolatum (Bull Thistle)
Cirsium pitcheri (Pitcher's Thistle)
Cirsium pumilum (Hill's Thistle)
Cirsium pumilus (Hill's Thistle)
Cirsium vulgare (Bull Thistle)
Cladorhiza maculata (Spotted Coralroot)
Claytonia caroliniana (Carolina Spring Beauty)
Claytonia virginica (Narrow-leaved Spring Beauty)
Clematis virginiana (Virgin's Bower)
Cleome dodecandra (Clammyweed)
Clinopodium arkansanum (Low Calamint)
Clinopodium glabrum (Low Calamint)
Clinopodium vulgare (Wild Basil)
Clintonia borealis (Yellow Clintonia)
Cnicus arvensis (Canada Thistle)
Cnicus discolor (Field Thistle)
Cnicus hillii (Hill's Thistle)
Cnicus lanceolatus (Bull Thistle)
Cnicus pitcheri (Pitcher's Thistle)
Coeloglossum viride (Long-bracted Green Orchid)
Comptonia peregrina (Sweetfern)
Conium maculatum (Poison Hemlock)
Conopholis americana (Squawroot)
Convallaria borealis (Yellow Clintonia)
Convallaria pubescens (Hairy Solomon's Seal)
Convallaria racemosa (False Solomon's Seal)
Convallaria stellata (Star-flowered Solomon's Seal)
Convolvulus americanus (Hedge Bindweed)
Convolvulus arvensis (Field Bindweed)
Convolvulus camporum (Upright Bindweed)
Convolvulus sepium (Hedge Bindweed)
Convolvulus spithamaeus (Upright Bindweed)
Coprosmanthus herbaceus (Carrion Flower)
Coptis groenlandica (Goldthread)
Coptis trifolia (Goldthread)
Corallorhiza corallorhiza (Early Coralroot)
Corallorhiza innata (Early Coralroot)
Corallorhiza macrae (Striped Coralroot)
Corallorhiza maculata (Spotted Coralroot)
Corallorhiza multiflora (Spotted Coralroot)
Corallorhiza striata (Striped Coralroot)
Corallorhiza trifida (Early Coralroot)
Coreopsis tripteris (Tall Coreopsis)
Cornus alternifolia (Alternate-leaved Dogwood)
Cornus canadensis (Bunchberry)
Cornus florida (Flowering Dogwood)
Cornus obliqua (Silky Dogwood)
Cornus racemosa (Gray Dogwood)
Cornus sericea (Red Osier Dogwood)
Cornus stolonifera (Red Osier Dogwood)
Corydalis aurea (Golden Corydalis)
Corydalis canadensis (Squirrel Corn)
Corydalis flavula (Yellow Corydalis)
Criosanthes arietina (Ram's Head Lady's Slipper)
Crocus vernus (Crocus)
Cryptogramma stelleri (Slender Cliffbrake)
Cryptotaenia canadensis (Honewort)
Cubelium concolor (Green Violet)
Cucubalus latifolius (Bladder Campion)
Cymbidium pulchellum (Grass Pink)
Cynanchum louiseae (Black Swallowwort)
Cynanchum medium (Pale Swallowwort)
Cynanchum nigrum (Black Swallowwort)
Cynanchum rossicum (Pale Swallowwort)
Cynanchum vincetoxicum (White Swallowwort)
Cynoglossum officinale (Hound's Tongue)
Cynoxylon floridum (Flowering Dogwood)
Cyperus arundinaceus (Three-way Sedge)
Cyperus bipartitus (Umbrella Sedge)
Cyperus rivularis (Umbrella Sedge)
Cyperus schweinitzii (Schweinitz's Umbrella Sedge)
Cyperus spathaceus (Three-way Sedge)
Cypripedium acaule (Pink Lady's Slipper)
Cypripedium album (Showy Lady's Slipper)
Cypripedium arietinum (Ram's Head Lady's Slipper)
Cypripedium bulbosa (Calypso)
Cypripedium candidum (Small White Lady's Slipper)
Cypripedium furcatum (Large Yellow Lady's Slipper)
Cypripedium humile (Pink Lady's Slipper)
Cypripedium parviflorum var makasin (Small Yellow Lady's Slipper)
Cypripedium parviflorum var pubescens (Large Yellow Lady's Slipper)
Cypripedium parviflorum X C. candidum (Hybrid Lady's Slipper)
Cypripedium pubescens (Large Yellow Lady's Slipper)
Cypripedium reginae (Showy Lady's Slipper)
Cypripedium spectabile (Showy Lady's Slipper)
Cystopteris bulbifera (Bulblet Fern)
Cystopteris dickieana (Fragile Fern)
Cystopteris fragilis (Fragile Fern)
Cystopteris tenuis (Mackay's Fragile Fern)
Cythera bulbosa (Calypso)

Dactylis cynosuroides (Tall Cord Grass)
Dactylis glomerata (Orchard Grass)
Dactylorhiza viridis (Long-bracted Green Orchid)
Dalea purpurea (Purple Prairie Clover)
Dalea violacea (Purple Prairie Clover)
Dalibarda fragarioides (Barren Strawberry)
Dasiphora floribunda (Shrubby Cinquefoil)
Dasiphora fruticosa (Shrubby Cinquefoil)
Daucus carota (Wild Carrot)
Decodon verticillatus (Swamp Loosestrife)
Deparia acrostichoides (Silvery Glade Fern)
Deparia pycnocarpon (Silvery Glade Fern)
Desmodium canadense (Showy Tick Trefoil)
Dicentra canadensis (Squirrel Corn)
Dicentra cucullaria (Dutchman's Breeches)
Dichanthelium leibergii (Leiberg's Panic Grass)
Diclytra canadensis (Squirrel Corn)
Diclytra cucullaria (Dutchman's Breeches)
Diervilla canadensis (Bush Honeysuckle)
Diervilla diervilla (Bush Honeysuckle)
Diervilla lonicera (Bush Honeysuckle)
Diervilla trifida (Bush Honeysuckle)
Digitaria sanguinalis (Large Crab Grass)
Diplazium acrostichoides (Silvery Glade Fern)
Diplazium pycnocarpon (Narrow-leaved Glade Fern)
Dipsacus fullonum (Teasel)
Dipsacus sylvestris (Teasel)
Dirca palustris (Leatherwood)
Disporum lanuginosum (Yellow Mandarin)
Doellingeria umbellata (Flat-topped White Aster)
Draba caroliniana (Carolina Whitlow Grass)
Draba praecox (Spring Whitlow Grass)
Draba reptans (Carolina Whitlow Grass)
Draba verna (Spring Whitlow Grass)
Dracaena borealis (Yellow Clintonia)
Drosera intermedia (Spatulate-leaved Sundew)
Drosera linearis (Linear-leaved Sundew)
Drosera rotundifolia (Round-leaved Sundew)
Dryas integrifolia (White Mountain Avens)
Dryas tenella (White Mountain Avens)
Drymocallis agrimonioides (Tall Cinquefoil)
Drymocallis arguta (Tall Cinquefoil)
Dryopteris acrostichoides (Christmas Fern)
Dryopteris braunii (Braun's Holly Fern)
Dryopteris carthusiana (Spinulose Wood Fern)
Dryopteris clintoniana (Clinton's Wood Fern)
Dryopteris cristata (Crested Shield Fern)
Dryopteris disjuncta (Oak Fern)
Dryopteris filix-mas (Male Fern)
Dryopteris goldiana (Goldie's Fern)
Dryopteris hexagonoptera (Broad Beech Fern)
Dryopteris intermedia (Intermediate Wood Fern)
Dryopteris lonchitis (Northern Holly Fern)
Dryopteris marginalis (Marginal Shield Fern)
Dryopteris noveboracensis (New York Fern)
Dryopteris phegopteris (Long Beech Fern)
Dryopteris robertiana (Robert's Fern)
Dryopteris spinulosa (Spinulose Wood Fern)
Duchesnea chrysantha (Indian Strawberry)
Duchesnea indica (Indian Strawberry)
Dulichium arundinaceum (Three-way Sedge)
Dulichium canadense (Three-way Sedge)
Dulichium spathaceum (Three-way Sedge)

Echinacea pallida (Pale Purple Coneflower)
Echinacea purpurea (Purple Coneflower)
Echinocystis lobata (Wild Cucumber)
Echinops sphaerocephalus (Globe Thistle)
Echium vulgare (Viper's Bugloss)
Elaeagnus umbellata (Autumn Olive)
Elatinoides elatine (Sharpleaf Cancerwort)
Elatinoides spuria (Roundleaf Cancerwort)
Elymus canadensis (Canada Wild Rye)
Elymus glaucifolius (Canada Wild Rye)
Elymus hystrix (Bottle-brush Grass)
Elymus lanceolatus (Great Lakes Wheat Grass)
Elymus robustus (Canada Wild Rye)
Elymus trachycaulus (Wild Rye)
Epifagus americana (Beechdrops)
Epifagus virginiana (Beechdrops)
Epigaea repens (Trailing Arbutus)
Epilobium latifolium (River Beauty)
Epipactis decipiens (Green-leaved Rattlesnake Plantain)
Epipactis helleborine (Helleborine)
Epipactis pubescens (Downy Rattlesnake Plantain)
Epipactis repens (Dwarf Rattlesnake Plantain)
Epipactis viridiflora (Helleborine)
Eranthis hyemalis (Winter Aconite)
Erigenia bulbosa (Harbinger-of-Spring)
Erigeron bellidifolius (Robin's Plantain)
Erigeron ciliata (Rayless Annual Aster)
Erigeron pulchellus (Robin's Plantain)
Erophila spathulata (Spring Whitlow Grass)
Erophila verna (Spring Whitlow Grass)
Erophila vulgaris (Spring Whitlow Grass)
Erysimum barbarea (Yellow Rocket)
Erythraea centaurium (Centaury)
Erythraea pulchella (Branching Centaury)
Erythraea ramosissima (Branching Centaury)
Erythronium albidum (White Trout Lily)
Erythronium americanum (Trout Lily)
Eucephalus nemoralis (Bog Aster)
Euonymus alata (Winged Euonymus)
Eupatorium maculatum (Spotted Joe Pye Weed)
Eupatorium perfoliatum (Boneset)
Eupatorium purpureum (Sweet-scented Joe Pye Weed)
Eupatorium truncatum (Boneset)
Euphorbia corollata (Flowering Spurge)
Euphorbia cyparissias (Cypress Spurge)
Euphorbia maculata (Milk Purslane)
Euphorbia supina (Milk Purslane)
Eurybia divaricata (White Wood Aster)
Eurybia glomerata (Shreber's Aster)
Eurybia macrophylla (Large-leaved Aster)
Eurybia schreberi (Shreber's Aster)
Euthamia graminifolia (Grass-leaved Goldenrod)
Eutrochium maculatum (Spotted Joe Pye Weed)
Eutrochium purpureum (Sweet-scented Joe Pye Weed)

Fallopia convolvulus (Eurasian Black Bindweed)
Fallopia japonica (Japanese Knotweed)
Felix bulbifera (Bulblet Fern)
Ficaria ficaria (Lesser Celandine)
Ficaria ranunculoides (Lesser Celandine)
Ficaria verna (Lesser Celandine)
Filix fragilis (Fragile Fern)
Fissipes acaulis (Pink Lady's Slipper)
Floerkea proserpinacoides (False Mermaid)
Fragaria indica (Indian Strawberry)
Fragaria vesca (Woodland Strawberry)
Fragaria virginiana (Wild Strawberry)
Frangula alnus (Glossy Buckthorn)
Frasera caroliniensis (American Columbo)
Frasera walteri (American Columbo)
Fraxinus americana (White Ash)
Fraxinus nigra (Black Ash)
Fraxinus pennsylvanica (Red Ash)
Fraxinus profunda (Pumpkin Ash)
Fraxinus quadrangulata (Blue Ash)
Fumaria cucullaria (Dutchman's Breeches)
Fumaria flavula (Yellow Corydalis)

Gaillardia pulchella (Showy Blanket Flower)
Galanthus nivalis (Snowdrops)
Galatella nemoralis (Bog Aster)
Galearis rotundifolia (Small Round-leaved Orchid)
Galearis spectabilis (Showy Orchis)
Galeorchis spectabilis (Showy Orchis)
Galium labradoricum (Labrador Bedstraw)
Galium latifolium (Purple Bedstraw)
Galium odorata (Sweet Woodruff)
Galium odoratum (Sweet Woodruff)
Galium tinctorium (Labrador Bedstraw)
Galium trifidum (Small Bedstraw)
Galium triflorum (Sweet-scented Bedstraw)
Galium verum (Yellow Bedstraw)
Gaultheria hispidula (Creeping Snowberry)
Gaultheria procumbens (Wintergreen)
Gentiana linearis (Narrow-leaved Gentian)
Gentiana procera (Smaller Fringed Gentian)
Gentiana pulchella (Branching Centaury)
Gentiana ramosissima (Branching Centaury)
Gentianopsis virgata (Smaller Fringed Gentian)
Geranium bicknellii (Bicknell's Cranesbill)
Geranium maculatum (Wild Geranium)
Geranium robertianum (Herb Robert)
Geum agrimonioides (Tall Cinquefoil)
Geum aleppicum (Yellow Avens)
Geum canadense (Catlings Avens)
Geum canadense (White Avens)
Geum canadense (Yellow Avens)
Geum carolinianum (White Avens)
Geum ciliatum (Prairie Smoke)
Geum fragarioides (Barren Strawberry)
Geum rivale (Water Avens)
Geum strictum (Yellow Avens)
Geum triflorum (Prairie Smoke)
Geum urbanum (Wood Avens)
Geum vernum (Spring Avens)
Geum X catlingii (Catlings Avens)
Ginkgo biloba (Ginkgo)
Ginseng quinquefolium (Ginseng)
Ginseng trifolium (Dwarf Ginseng)
Glechoma hederacea (Ground Ivy)
Gleditsia triacanthos (Honey Locust)
Goodyera menziesii (Green-leaved Rattlesnake Plantain)
Goodyera oblongifolia (Green-leaved Rattlesnake Plantain)
Goodyera ophioides (Dwarf Rattlesnake Plantain)
Goodyera pubescens (Downy Rattlesnake Plantain)
Goodyera repens (Dwarf Rattlesnake Plantain)
Gymnadeniopsis clavellata (Club Spur Orchid)
Gymnocarpium dryopteris (Oak Fern)
Gymnocarpium robertianum (Robert's Fern)
Gymnocladus dioicus (Kentucky Coffee Tree)
Gymnostichum hystrix (Bottle-brush Grass)
Gyrostachys cernua (Nodding Ladies' Tresses)

Habenaria blephariglottis (White Fringed Orchid)
Habenaria clavellata (Club Spur Orchid)
Habenaria dilatata (White Bog Orchid)
Habenaria hookeri (Hooker's Orchid)
Habenaria hyperborea (Northern Green Orchid)
Habenaria lacera (Ragged Fringed Orchid)
Habenaria leucophaea (Prairie White Fringed Orchid)
Habenaria macrophylla (Large Round Leaf Orchid)
Habenaria obtusata (Blunt Leaf Rein Orchid)
Habenaria orbiculata (Large Round Leaf Orchid)
Habenaria psycodes (Smaller Purple Fringed Orchid)
Habenaria tridentata (Club Spur Orchid)
Habenaria unalascensis (Alaska Orchid)
Habenaria viridis (Long-bracted Green Orchid)
Halenia deflexa (Spurred Gentian)
Hamamelis virginiana (Witch Hazel)
Hedeoma arkansana (Low Calamint)
Hedeoma glabra (Low Calamint)
Hedysarum canadense (Showy Tick Trefoil)
Helenium autumnale (Sneezeweed)
Helenium grandiflorum (Sneezeweed)
Helenium pubescens (Sneezeweed)
Helianthus divaricatus (Woodland Sunflower)
Helianthus giganteus (Tall Sunflower)
Helianthus maximilianii (Maximilian Sunflower)
Helianthus tuberosus (Jerusalem Artichoke)
Heliopsis helianthoides (Oxeye)
Heliopsis laevis (Oxeye)
Heliopsis scabra (Oxeye)
Helleborus hyemalis (Winter Aconite)
Helleborus trifolius (Goldthread)
Hepatica acuta (Sharp-lobed Hepatica)
Hepatica acutiloba (Sharp-lobed Hepatica)
Hepatica americana (Round-lobed Hepatica)
Hesperis matronalis (Dame's Rocket)
Heuchera americana (Alumroot)
Homalocenchrus oryzoides (Rice Cut Grass)
Homalosorus pycnocarpos (Narrow-leaved Glade Fern)
Hudsonia tomentosa (False Heather)
Hyacinthus botryoides (Grape Hyacinth)
Hybanthus concolor (Green Violet)
Hydrastis canadensis (Goldenseal)
Hydrocharis morsus-ranae (Frogbit)
Hydropeltis purpurea (Water Shield)
Hydrophyllum canadense (Broad-leaved Waterleaf)
Hydrophyllum virginianum (Virginia Waterleaf)
Hymenoxys acaulis (Lakeside Daisy)
Hymenoxys herbacea (Lakeside Daisy)
Hypericum kalmianum (Kalm's St Johnswort)
Hypericum prolificum (Shrubby St Johnswort)
Hypericum spathulatum (Shrubby St Johnswort)
Hypopitys lanuginosa (Pinesap)
Hypopitys monotropa (Pinesap)
Hypoxis erecta (Yellow Stargrass)
Hypoxis hirsuta (Yellow Stargrass)
Hyssopus nepetoides (Yellow Giant Hyssop)
Hystrix hystrix (Bottle-brush Grass)
Hystrix patula (Bottle-brush Grass)

Ibidium cernuum (Nodding Ladies' Tresses)
Ibidium platagineum (Wide-leaved Ladies' Tresses)
Ilex mucronata (Mountain Holly)
Ilex verticillata (Winterberry)
Impatiens aurea (Pale Touch-me-not)
Impatiens glandulifera (Himalayan Balsam)
Impatiens pallida (Pale Touch-me-not)
Inula helenium (Elecampane)
Iris lacustris (Dwarf Lake Iris)
Iris pseudacorus (Yellow Iris)
Iris versicolor (Blue Flag Iris)
Isanthus brachiatus (False Pennyroyal)
Isotrema macrophyllum (Dutchman's Pipe)

Jeffersonia bartonis (Twinleaf)
Jeffersonia binata (Twinleaf)
Jeffersonia diphylla (Twinleaf)
Juglans cinerea (Butternut)
Juglans nigra (Black Walnut)
Juglans regia (English Walnut)
Juncoides pilosa (Hairy Wood Rush)
Juncus balticus (Baltic Rush)
Juniperus virginiana (Eastern Red Cedar)

Kickxia elatine (Sharpleaf Cancerwort)
Kickxia spuria (Roundleaf Cancerwort)
Koeleria cristata (Prairie Junegrass)
Koeleria gracilis (Prairie Junegrass)
Koeleria macrantha (Prairie Junegrass)
Koeleria pyramidata (Prairie Junegrass)
Koellia pilosa (Hairy Mountain Mint)
Koellia virginiana (Virginia Mountain Mint)
Kuhnistera purpurea (Purple Prairie Clover)

Lamiastrum galeobdolon (Yellow Archangel)
Lapsana communis (Nipplewort)
Larix decidua (European Larch)
Larix laricina (Tamarack)
Lasallea ericoides (Heath Aster)
Lasallea novae-angliae (New England Aster)
Lathyrus japonicus (Beach Pea)
Lathyrus maritimus (Beach Pea)
Lathyrus ochroleucus (Pale Vetchling)
Lathyrus palustris (Marsh Vetchling)
Lathyrus pilosus (Marsh Vetchling)
Lathyrus pratensis (Yellow Vetchling)
Lathyrus tuberosus (Tuberous Vetchling)
Lechea mucronata (Hairy Pinweed)
Lechea villosa (Hairy Pinweed)
Leersia oryzoides (Rice Cut Grass)
Lemna minor (Lesser Duckweed)
Lemna minuta (Lesser Duckweed)
Leontodon taraxacum (Common Dandelion)
Lepachys pinnata (Gray-headed Coneflower)
Leptamnium virginianum (Beechdrops)
Leptandra virginica (Culver's Root)
Leptorchis loeselii (Loesel's Twayblade)
Lespedeza bicknellii (Round-headed Bush Clover)
Lespedeza capitata (Round-headed Bush Clover)
Lespedeza frutescens (Round-headed Bush Clover)
Lespedeza velutina (Round-headed Bush Clover)
Leucanthemum leucanthemum (Oxeye Daisy)
Leucanthemum praecox (Oxeye Daisy)
Leucanthemum vulgare (Oxeye Daisy)
Liatris cylindracea (Cylindric Blazing Star)
Liatris spicata (Spiked Blazing Star)
Ligustrum vulgare (Privet)
Lilium carolinianum (Michigan Lily)
Lilium michiganense (Michigan Lily)
Lilium philadelphicum (Wood Lily)
Limnocharis fragrans (White Bog Orchid)
Limnorchis dilatata (White Bog Orchid)
Limnorchis hyperborea (Northern Green Orchid)
Limodorum tuberosum (Grass Pink)
Linaria dalmatica (Dalmation Toadflax)
Linaria elatina (Sharpleaf Cancerwort)
Linaria minor (Dwarf Snapdragon)
Linaria spuria (Roundleaf Cancerwort)
Linaria vulgaris (Butter-and-eggs)
Lindera benzoin (Spicebush)
Linnaea americana (Twinflower)
Linnaea borealis (Twinflower)
Liparis liliifolia (Purple Twayblade)
Liparis loeselii (Loesel's Twayblade)
Liriodendron tulipifera (Tulip Tree)
Listera auriculata (Auricled Twayblade)
Listera cordata (Heart-leaved Twayblade)
Listera ovata (European Common Twayblade)
Lithospermum angustifolium (Fringed Puccoon)
Lithospermum caroliniense (Hairy Puccoon)
Lithospermum croceum (Hairy Puccoon)
Lithospermum hirtum (Hairy Puccoon)
Lithospermum incisum (Fringed Puccoon)
Lithospermum linearifolium (Fringed Puccoon)
Lobelia cardinalis (Cardinal Flower)
Lobelia inflata (Indian Tobacco)
Lobelia siphilitica (Great Lobelia)
Lonicera canadensis (American Fly Honeysuckle)
Lonicera diervilla (Bush Honeysuckle)
Lophanthus nepetoides (Yellow Giant Hyssop)
Lotus corniculatus (Birdsfoot Trefoil)
Lupinus perennis (Wild Lupine)
Luzula acuminata (Hairy Wood Rush)
Luzula pilosa (Hairy Wood Rush)
Luzula vernalis (Hairy Wood Rush)
Lychnis alba (White Campion)
Lychnis dioica (Red Campion)
Lychnis vespertina (White Campion)
Lysias hookeriana (Hooker's Orchid)
Lysias orbiculata (Round Leaf Orchid)
Lysias orbiculata (Large Round Leaf Orchid)
Lysiella obtusata (Blunt Leaf Rein Orchid)
Lysimachia borealis (Starflower)
Lysimachia ciliata (Fringed Loosestrife)
Lysimachia quadriflora (Prairie Loosestrife)
Lysimachia quadrifolia (Whorled Loosestrife)
Lysimachia terrestris (Yellow Loosestrife)
Lysimachia thyrsiflora (Tufted Loosestrife)
Lythrum salicaria (Purple Loosestrife)

Magnolia acuminata (Cucumber Magnolia)
Maianthemum canadense (Canada Mayflower)
Maianthemum racemosum (False Solomon's Seal)
Maianthemum stellatum (Star-flowered Solomon's Seal)
Malaxis ophioglossoides (Green Adder's Mouth)
Malaxis unifolia (Green Adder's Mouth)
Malus domestica (Common Apple)
Malus pumila (Common Apple)
Matteuccia pensylvanica (Ostrich Fern)
Matteuccia struthiopteris (Ostrich Fern)
Meconopsis diphylla (Celandine Poppy)
Medeola virginiana (Indian Cucumber Root)
Medicago lupulina (Black Medick)
Medicago sativa (Alfalfa)
Megalodonta beckii (Water Marigold)
Megalodonta nudata (Water Marigold)
Meibomia canadensis (Showy Tick Trefoil)
Melampyrum lineare (Cowwheat)
Melandrium noctiflorum (Night-flowering Catchfly)
Menispermum canadense (Canada Moonseed)
Menyanthes trifoliata (Buckbean)
Mertensia maritima (Sea Lungwort)
Mertensia paniculata (Northern Bluebells)
Mespilus arborea (Downy Serviceberry)
Micrampelis lobata (Wild Cucumber)
Micranthes virginiensis (Early Saxifrage)
Microstylis ophioglossoides (Green Adder's Mouth)
Milium racemosum (Black-seed Rice Grass)
Mimulus ringens (Square-stemmed Monkey Flower)
Minuartia michauxii (Rock Sandwort)
Mitchella repens (Partridgeberry)
Mitella diphylla (Miterwort)
Mitella nuda (Naked Miterwort)
Mitella prostrata (Naked Miterwort)
Momordica echinata (Wild Cucumber)
Monarda ciliata (Downy Wood Mint)
Monarda didyma (Oswego Tea)
Monarda fistulosa (Wild Bergamot)
Monarda menthifolium (Wild Bergamot)
Monarda punctata (Horsemint)
Moneses grandiflora (One-Flowered Pyrola)
Moneses uniflora (One-Flowered Pyrola)
Monotropa hypopitys (Pinesap)
Monotropa procera (Giant Bird's Nest)
Monotropa uniflora (Indian Pipe)
Morella pensylvanica (Bayberry)
Muscari botryoides (Grape Hyacinth)
Myrica gale (Sweet Gale)
Myrica pensylvanica (Bayberry)
Myrrhis claytonii (Sweet Cicely)
Myrrhis longistylis (Aniseroot)

Nabalus albus (White Lettuce)
Nabalus altissimus (Tall Rattlesnakeroot)
Nabalus racemosus (Glaucous Rattlesnakeroot)
Nabalus trifoliolatus (Three-leaved Rattlesnakeroot)
Narcissus pseudonarcissus (Daffodil)
Narthecium glutinosum (Sticky Tofieldia)
Nemopanthus mucronata (Mountain Holly)
Neottia auriculata (Auricled Twayblade)
Neottia cordata (Heart-leaved Twayblade)
Neottia lacera (Northern Slender Ladies' Tresses)
Neottia lucida (Wide-leaved Ladies' Tresses)
Neottia ovata (European Common Twayblade)
Neottia pubescens (Downy Rattlesnake Plantain)
Nepeta cataria (Catnip)
Nepeta glechoma (Ground Ivy)
Nepeta hederacea (Ground Ivy)
Nephrodium acrostichoides (Christmas Fern)
Nephrodium tenue (Mackay's Fragile Fern)
Nephrodium thelypteroides (New York Fern)
Nicandra physalodes (Apple-of-Peru)

Oakesia sessilifolia (Sessile-leaved Bellwort)
Oclemena acuminata (Whorled Aster)
Oclemena nemoralis (Bog Aster)
Oligoneuron houghtonii (Houghton's Goldenrod)
Oligoneuron ohioense (Ohio Goldenrod)
Oligoneuron rigidum (Stiff-leaved Goldenrod)
Onoclea sensibilis (Sensitive Fern)
Ophioglossum pusillum (Northern Adder's Tongue)
Ophrys cernua (Nodding Ladies' Tresses)
Ophrys cordata (Heart-leaved Twayblade)
Ophrys loeselii (Loesel's Twayblade)
Ophrys ovata (European Common Twayblade)
Opuntia compressa (Prickly Pear Cactus)
Opuntia humifusa (Prickly Pear Cactus)
Opuntia rafinesquii (Prickly Pear Cactus)
Opuntia vulgaris (Prickly Pear Cactus)
Orchis blephariglottis (White Fringed Orchid)
Orchis clavellata (Club Spur Orchid)
Orchis dilatata (White Bog Orchid)
Orchis fimbriata (Smaller Purple Fringed Orchid)
Orchis huronensis (Northern Green Orchid)
Orchis hyperborea (Northern Green Orchid)
Orchis lacera (Ragged Fringed Orchid)
Orchis leucophaea (Prairie White Fringed Orchid)
Orchis obtusata (Blunt Leaf Rein Orchid)
Orchis orbiculata (Round Leaf Orchid)
Orchis orbiculata (Large Round Leaf Orchid)
Orchis psycodes (Smaller Purple Fringed Orchid)
Orchis rotundifolia (Small Round-leaved Orchid)
Orchis spectabilis (Showy Orchis)
Ornithogalum hirsutum (Yellow Stargrass)
Ornithogalum umbellatum (Star-of-Bethlehem)
Orobanche americana (Squawroot)
Orobanche purpurea (One-flowered Cancerroot)
Orobanche uniflora (One-flowered Cancerroot)
Orobanche virginiana (Beechdrops)
Orthilia secunda (One-sided Pyrola)
Oryza oryzoides (Rice Cut Grass)
Oryzopsis melanocarpa (Black-seed Rice Grass)
Oryzopsis racemosa (Black-seed Rice Grass)
Osmorhiza aristata (Aniseroot)
Osmorhiza brevistylis (Sweet Cicely)
Osmorhiza claytonii (Sweet Cicely)
Osmorhiza longistylis (Aniseroot)
Osmunda cinnamomea (Cinnamon Fern)
Osmunda claytoniana (Interrupted Fern)
Osmunda interrupta (Interrupted Fern)
Osmunda multifida (Leathery Grape Fern)
Osmunda regalis (Royal Fern)
Osmunda virginiana (Rattlesnake Fern)
Osmundastrum cinnamomeum (Cinnamon Fern)
Oxalis acetosella (Common Wood Sorrel)
Oxalis montana (Common Wood Sorrel)
Oxycoccus hagerupii (Small Cranberry)
Oxycoccus macrocarpus (Large Cranberry)
Oxycoccus oxycoccus (Small Cranberry)
Oxycoccus quadripetalus (Small Cranberry)

Packera plattensis (Prairie Ragwort)
Panax quinquefolius (Ginseng)
Panax trifolium (Dwarf Ginseng)
Panax trifolius (Dwarf Ginseng)
Panicum diffusum (Wood Panic Grass)
Panicum leibergii (Leiberg's Panic Grass)
Panicum lithophilum (Wood Panic Grass)
Panicum minus (Wood Panic Grass)
Panicum philadelphicum (Wood Panic Grass)
Panicum sanguinale (Large Crab Grass)
Panicum tuckermanii (Wood Panic Grass)
Panicum virgatum (Switch Grass)
Parnassia glauca (Grass-of-Parnassus)
Parthenocissus quinquefolia (Virginia Creeper)
Paspalum sanguinale (Large Crab Grass)
Patis racemosa (Black-seed Rice Grass)
Pcynanthemum muticum (Hairy Mountain Mint)
Pedicularis canadensis (Wood Betony)
Pellaea atropurpurea (Purple-stemmed Cliffbrake)
Pellaea glabella (Smooth Cliffbrake)
Pellaea gracilis (Slender Cliffbrake)
Penstemon digitalis (Foxglove Beardtongue)
Penstemon hirsutus (Hairy Beardtongue)
Penstemon pubescens (Hairy Beardtongue)
Peramium pubescens (Downy Rattlesnake Plantain)
Persicaria arifolia (Halberd-leaved Tearthumb)
Persicaria sagittata (Arrow-leaved Tearthumb)
Persicaria virginiana (Jumpseed)
Petalostemon violaceum (Purple Prairie Clover)
Petalostemum purpureum (Purple Prairie Clover)
Petasites frigidus (Sweet Coltsfoot)
Petasites japonicus (Butterbur)
Petasites palmatus (Sweet Coltsfoot)
Phalaris oryzoides (Rice Cut Grass)
Phegopteris connectilis (Long Beech Fern)
Phegopteris dryopteris (Oak Fern)
Phegopteris hexagonoptera (Broad Beech Fern)
Phegopteris polypodioides (Long Beech Fern)
Phleum pratense (Timothy)
Phragmites australis (Phragmites)
Phragmites communis (Phragmites)
Phragmites phragmites (Phragmites)
Phryma leptostachya (Lopseed)
Phyllitis fernaldiana (Hart's Tongue Fern)
Phyllitis scolopendrium (Hart's Tongue Fern)
Physalis heterophylla (Clammy Ground Cherry)
Physalis longifolia (Smooth Ground Cherry)
Physalis subglabrata (Smooth Ground Cherry)
Physalodes peruvianum (Apple-of-Peru)
Physalodes physalodes (Apple-of-Peru)
Phytolacca americana (Pokeweed)
Phytolacca decandra (Pokeweed)
Phytolacca thyrsiflora (Pokeweed)
Picea abies (Norway Spruce)
Pilea pumila (Clearweed)
Pimpinella integerrima (Yellow Pimpernel)
Pinguicula vulgaris (Butterwort)
Pinus banksiana (Jack Pine)
Pinus mugo (Mugo Pine)
Pinus nigra (Austrian Pine)
Pinus resinosa (Red Pine)
Pinus rigida (Pitch Pine)
Pinus strobus (Eastern White Pine)
Pinus sylvestris (Scots Pine)
Piperia unalascensis (Alaska Orchid)
Piptatherum racemosum (Black-seed Rice Grass)
Pisum maritimum (Beach Pea)
Platanthera blephariglottis (White Fringed Orchid)
Platanthera clavellata (Club Spur Orchid)
Platanthera dilatata (White Bog Orchid)
Platanthera hookeri (Hooker's Orchid)
Platanthera hyperborea (Northern Green Orchid)
Platanthera lacera (Ragged Fringed Orchid)
Platanthera leucophaea (Prairie White Fringed Orchid)
Platanthera macrophylla (Large Round Leaf Orchid)
Platanthera obtusata (Blunt Leaf Rein Orchid)
Platanthera orbiculata (Round Leaf Orchid)
Platanthera psycodes (Smaller Purple Fringed Orchid)
Platanthera rotundifolia (Small Round-leaved Orchid)
Platanthera unalascensis (Alaska Orchid)
Platanus occidentalis (Sycamore)
Pneumaria maritima (Sea Lungwort)
Podophyllum diphyllum (Twinleaf)
Podophyllum peltatum (Mayapple)
Pogonia ophioglossoides (Rose Pogonia)
Polanisia dodecandra (Clammyweed)
Polanisia graveolens (Clammyweed)
Polygala senega (Seneca Snakeroot)
Polygala uniflora (Fringed Polygala)
Polygaloides paucifolia (Fringed Polygala)
Polygonatum biflorum (Great Solomon's Seal)
Polygonatum canaliculatum (Great Solomon's Seal)
Polygonatum pubescens (Hairy Solomon's Seal)
Polygonella articulata (Northern Jointweed)
Polygonum arifolium (Halberd-leaved Tearthumb)
Polygonum articulatum (Northern Jointweed)
Polygonum convolvulus (Eurasian Black Bindweed)
Polygonum cuspidatum (Japanese Knotweed)
Polygonum sagittatum (Arrow-leaved Tearthumb)
Polygonum virginianum (Jumpseed)
Polygonum viviparum (Alpine Bistort)
Polypodium bulbiferum (Bulblet Fern)
Polypodium carthusianum (Spinulose Wood Fern)
Polypodium connectile (Long Beech Fern)
Polypodium cristata (Crested Shield Fern)
Polypodium dryopteris (Oak Fern)
Polypodium filix-mas (Male Fern)
Polypodium fragile (Fragile Fern)
Polypodium hexagonopterum (Broad Beech Fern)
Polypodium lonchitis (Northern Holly Fern)
Polypodium marginale (Marginal Shield Fern)
Polypodium noveboracense (New York Fern)
Polypodium robertianum (Robert's Fern)
Polypodium vinlandicum (Polypody)
Polypodium virginianum (Polypody)
Polypodium vulgare (Polypody)
Polystichum acrostichoides (Christmas Fern)
Polystichum braunii (Braun's Holly Fern)
Polystichum lonchitis (Northern Holly Fern)
Polystichum X marginale (Northern Holly Fern)
Pontederia cordata (Pickerelweed)
Pontederia lancifolia (Pickerelweed)
Populus grandidentata (Large-toothed Aspen)
Populus nigra (Lombardy Poplar)
Populus tremuloides (Trembling Aspen)
Portulaca oleracea (Purslane)
Potentilla anserina (Silverweed)
Potentilla arguta (Tall Cinquefoil)
Potentilla egedii (Silverweed)
Potentilla fruticosa (Shrubby Cinquefoil)
Potentilla indica (Indian Strawberry)
Potentilla simplex (Common Cinquefoil)
Potentilla tridentata (Three-toothed Cinquefoil)
Potentilla yukonensis (Silverweed)
Poterium polyganum (Small Burnet)
Poterium sanguisorba (Small Burnet)
Prenanthes alba (White Lettuce)
Prenanthes altissima (Tall Rattlesnakeroot)
Prenanthes racemosa (Glaucous Rattlesnakeroot)
Prenanthes trifoliata (Three-leaved Rattlesnakeroot)
Primula intercedens (Dwarf Canadian Primrose)
Primula mistassinica (Dwarf Canadian Primrose)
Primula veris (Cowslip)
Prosartes lanuginosa (Yellow Mandarin)
Prunus mollis (Canada Plum)
Prunus nigra (Canada Plum)
Prunus pumila (Sand Cherry)
Prunus virginiana (Chokecherry)
Pseudo-acacia odorata (Black Locust)
Ptelea trifoliata (Hop Tree)
Pteretis nodulosa (Ostrich Fern)
Pteretis pensylvanica (Ostrich Fern)
Pteridium aquilinum (Bracken)
Pteridium latiusculum (Bracken)
Pteris aquilina (Bracken)
Pteris atropurpurea (Purple-stemmed Cliffbrake)
Pteris stelleri (Slender Cliffbrake)
Pterospora andromedea (Giant Bird's Nest)
Pulmonaria maritima (Sea Lungwort)
Pulmonaria paniculata (Northern Bluebells)
Pycnanthemum lanceolatum (Virginia Mountain Mint)
Pycnanthemum pilosum (Hairy Mountain Mint)
Pycnanthemum verticillatum (Hairy Mountain Mint)
Pycnanthemum virginianum (Virginia Mountain Mint)
Pyrola chlorantha (Green-flowered Pyrola)
Pyrola elliptica (Shinleaf)
Pyrola secunda (One-sided Pyrola)
Pyrola umbellata (Pipsissewa)
Pyrola uniflora (One-Flowered Pyrola)
Pyrola virens (Green-flowered Pyrola)

Quercus ellipsoidalis (Hill's Oak)
Quercus muehlenbergii (Chinquapin Oak)
Quercus prinoides (Dwarf Chinquapin Oak)
Quercus shumardii (Shumard Oak)

Ranunculus abortivus (Small-flowered Crowfoot)
Ranunculus aquatilis (White Water Buttercup)
Ranunculus ficaria (Lesser Celandine)
Ranunculus gmelinii (Small Yellow Water Crowfoot)
Ranunculus hispidus (Hispid Buttercup)
Ranunculus pensylvanicus (Bristly Crowfoot)
Ranunculus purshii (Small Yellow Water Crowfoot)
Ranunculus recurvatus (Hooked Crowfoot)
Ranunculus sceleratus (Cursed Crowfoot)
Ranunculus subrigidus (White Water Buttercup)
Ranunculus trichophyllus (White Water Buttercup)
Ratibida pinnata (Gray-headed Coneflower)
Reseda lutea (Yellow Upright Mignonette)
Rhamnus alnifolia (Alder-leaved Buckthorn)
Rhamnus cathartica (Common Buckthorn)
Rheum rhabarbarum (Rhubarb)
Rheum rhaponticum (Rhubarb)
Rhexia latifolia (Meadow Beauty)
Rhexia virginica (Meadow Beauty)
Rhus aromatica (Fragrant Sumac)
Rhus radicans (Poison Ivy)
Ribes americanum (Wild Black Currant)
Ribes cynosbati (Prickly Gooseberry)
Ribes hirtellum (Wild Gooseberry)
Ribes hudsonianum (Northern Wild Black Currant)
Ribes oxyacanthoides (Bristly Wild Gooseberry)
Robinia pseudoacacia (Black Locust)
Rosa acicularis (Prickly Wild Rose)
Rosa engelmanni (Prickly Wild Rose)
Rosa palustris (Swamp Rose)
Rosa sayi (Prickly Wild Rose)
Rosa setigera (Prairie Rose)
Rubus carolinianus (Wild Red Raspberry)
Rubus chamaemorus (Baked-apple Berry)
Rubus idaeus (Wild Red Raspberry)
Rubus idaeus (Wild Red Raspberry)
Rubus melanolasius (Wild Red Raspberry)
Rubus neglectus (Wild Red Raspberry)
Rubus occidentalis (Black Raspberry)
Rubus odoratus (Purple-flowering Raspberry)
Rubus strigosus (Wild Red Raspberry)
Rudbeckia hirta (Black-eyed Susan)
Rudbeckia laciniata (Green-headed Coneflower)
Rudbeckia pallida (Pale Purple Coneflower)
Rudbeckia pinnata (Gray-headed Coneflower)
Rudbeckia purpurea (Purple Coneflower)
Rumex britannica (Greater Water Dock)
Rumex orbiculatus (Greater Water Dock)

Sabulina michauxii (Rock Sandwort)
Sagina virginica (Yellow Bartonia)
Sagittaria latifolia (Common Arrowhead)
Salix acutidens (Heart-leaved Willow)
Salix adenophylla (Heart-leaved Willow)
Salix babylonica (Weeping Willow)
Salix bebbiana (Bebb's Willow)
Salix candida (Sage-leaved Willow)
Salix cordata (Heart-leaved Willow)
Salix cordata (Missouri Willow)
Salix discolor (Pussy Willow)
Salix eriocephala (Missouri Willow)
Salix exigua (Sandbar Willow)
Salix falcata (Black Willow)
Salix fluviatilis (Sandbar Willow)
Salix humilis (Prairie Willow)
Salix interior (Sandbar Willow)
Salix laurentiana (Pussy Willow)
Salix longifolia (Sandbar Willow)
Salix lucida (Shining Willow)
Salix lutea (Missouri Willow)
Salix luteosericea (Sandbar Willow)
Salix missouriensis (Heart-leaved Willow)
Salix nigra (Black Willow)
Salix pentandra (Laurel Willow)
Salix prinoides (Pussy Willow)
Salix purpurea (Basket Willow)
Salix reticulata (Net-veined Willow)
Salix rigida (Missouri Willow)
Salix rostrata (Bebb's Willow)
Salix syrticola (Heart-leaved Willow)
Salix tristis (Prairie Willow)
Salsola kali (Common Saltwort)
Salsola pestifer (Common Saltwort)
Salsola ruthenica (Common Saltwort)
Salsola tragus (Common Saltwort)
Sambucus callicarpa (Red-berried Elderberry)
Sambucus canadensis (Common Elderberry)
Sambucus cerulea (Common Elderberry)
Sambucus mexicana (Common Elderberry)
Sambucus microbotrys (Red-berried Elderberry)
Sambucus nigra (Common Elderberry)
Sambucus orbiculata (Common Elderberry)
Sambucus pubens (Red-berried Elderberry)
Sambucus racemosa (Red-berried Elderberry)
Sambucus simpsonii (Common Elderberry)
Sanguinaria canadensis (Bloodroot)
Sanguisorba minor (Small Burnet)
Sanguisorba muricata (Small Burnet)
Sanguisorba sanguisorba (Small Burnet)
Satureja arkansana (Low Calamint)
Satureja glabella (Low Calamint)
Satureja glabra (Low Calamint)
Satureja virginiana (Virginia Mountain Mint)
Satureja vulgaris (Wild Basil)
Satyrium repens (Dwarf Rattlesnake Plantain)
Saururus cernuus (Lizard's Tail)
Savastana hirta (Sweetgrass)
Saxifraga virginiensis (Early Saxifrage)
Sceptridium dissectum (Cut-leaved Grape Fern)
Sceptridium multifidum (Leathery Grape Fern)
Scheuchzeria palustris (Scheuchzeria)
Schizachyrium scoparium (Little Bluestem)
Schizachyrium scoparium (Little Bluestem)
Scilla siberica (Scilla)
Scolopendrium vulgare (Hart's Tongue Fern)
Scrophularia marilandica (Carpenter's Square)
Sedum acre (Mossy Stonecrop)
Senecio plattensis (Prairie Ragwort)
Senecio pseudotomentosus (Prairie Ragwort)
Senna hebecarpa (Wild Senna)
Serapias helleborine (Helleborine)
Serapias viridiflora (Helleborine)
Serratula arvensis (Canada Thistle)
Sibbaldia tridentata (Three-toothed Cinquefoil)
Sibbaldiopsis tridentata (Three-toothed Cinquefoil)
Sicyos angulatus (One-seeded Bur Cucumber)
Sicyos lobata (Wild Cucumber)
Sida abutilon (Velvetleaf)
Sieversia ciliata (Prairie Smoke)
Silene alba (White Campion)
Silene cucubalus (Bladder Campion)
Silene flos-cuculi (Ragged Robin)
Silene latifolia (Bladder Campion)
Silene latifolia (White Campion)
Silene noctiflora (Night-flowering Catchfly)
Silene vulgaris (Bladder Campion)
Silphium laciniatum (Compass Plant)
Silphium pinnatifidum (Prairie Dock)
Silphium terebinthinaceum (Prairie Dock)
Sison bulbosum (Harbinger-of-Spring)
Sisymbrium alliaria (Garlic Mustard)
Sisymbrium thaliana (Mouse Ear Cress)
Sisyrinchium albidum (White Blue-eyed Grass)
Sisyrinchium angustifolium (Stout Blue-eyed Grass)
Sisyrinchium bermudiana (Stout Blue-eyed Grass)
Sisyrinchium graminoides (Stout Blue-eyed Grass)
Sisyrinchium montanum (Common Blue-eyed Grass)
Sisyrinchium mucronatum (Slender Blue-eyed Grass)
Sium cicutaefolium (Water Parsnip)
Sium latifolium (Water Parsnip)
Sium lineare (Water Parsnip)
Sium suave (Water Parsnip)
Smilacina racemosa (False Solomon's Seal)
Smilacina stellata (Star-flowered Solomon's Seal)
Smilax herbacea (Carrion Flower)
Smilax illinoensis (Illinois Carrion Flower)
Smilax lasioneura (Carrion Flower)
Smyrnium aureum (Golden Alexanders)
Smyrnium integerrimum (Yellow Pimpernel)
Solea concolor (Green Violet)
Solidago aestivalis (Rough-stemmed Goldenrod)
Solidago altissima (Tall Goldenrod)
Solidago angustifolia (Seaside Goldenrod)
Solidago arguta (Sharp-leaved Goldenrod)
Solidago aspera (Rough-stemmed Goldenrod)
Solidago axillaris (Blue-stemmed Goldenrod)
Solidago bicolor (Silverrod)
Solidago caesia (Blue-stemmed Goldenrod)
Solidago canadensis (Canada Goldenrod)
Solidago elongata (Canada Goldenrod)
Solidago flexicaulis (Zigzag Goldenrod)
Solidago gigantea (Late Goldenrod)
Solidago gracilis (Blue-stemmed Goldenrod)
Solidago graminifolia (Grass-leaved Goldenrod)
Solidago harrisii (Sharp-leaved Goldenrod)
Solidago hirsuta (Hairy Goldenrod)
Solidago hispida (Hairy Goldenrod)
Solidago houghtonii (Houghton's Goldenrod)
Solidago humilis (Bog Goldenrod)
Solidago jejunifolia (Bog Goldenrod)
Solidago juncea (Early Goldenrod)
Solidago lanceolata (Grass-leaved Goldenrod)
Solidago lateriflora (Calico Aster)
Solidago muhlenbergii (Sharp-leaved Goldenrod)
Solidago neglecta (Bog Goldenrod)
Solidago nemoralis (Gray Goldenrod)
Solidago nuttallii (Grass-leaved Goldenrod)
Solidago ohioensis (Ohio Goldenrod)
Solidago patula (Rough-leaved Goldenrod)
Solidago pitcheri (Late Goldenrod)
Solidago ptarmicoides (Upland White Aster)
Solidago purshii (Bog Goldenrod)
Solidago rigida (Stiff-leaved Goldenrod)
Solidago rigidiuscula (Showy Goldenrod)
Solidago rugosa (Rough-stemmed Goldenrod)
Solidago rupestris (Canada Goldenrod)
Solidago sempervirens (Seaside Goldenrod)
Solidago serotina (Late Goldenrod)
Solidago shinnersii (Late Goldenrod)
Solidago speciosa (Showy Goldenrod)
Solidago squarrosa (Stout Goldenrod)
Solidago uliginosa (Bog Goldenrod)
Solidago vaseyi (Sharp-leaved Goldenrod)
Solidago villosa (Rough-stemmed Goldenrod)
Sorbaria sorbifolia (False Spirea)
Sorghastrum nutans (Indian Grass)
Sorghum nutans (Indian Grass)
Sparganium americanum (Lesser Bur Reed)
Sparganium androcladum (Floating Bur Reed)
Sparganium fluctuans (Floating Bur Reed)
Sparganium simplex (Floating Bur Reed)
Spartina cynosuroides (Tall Cord Grass)
Spartina pectinata (Tall Cord Grass)
Spartina polystachya (Tall Cord Grass)
Specularia perfoliata (Venus's Looking-glass)
Spiranthes cernua (Nodding Ladies' Tresses)
Spiranthes decipiens (Green-leaved Rattlesnake Plantain)
Spiranthes lacera (Northern Slender Ladies' Tresses)
Spiranthes latifolia (Wide-leaved Ladies' Tresses)
Spiranthes lucida (Wide-leaved Ladies' Tresses)
Spiranthes magnicamporum (Great Plains Ladies' Tresses)
Spiranthes romanzoffiana (Hooded Ladies' Tresses)
Spiranthes unalascensis (Alaska Orchid)
Sporobolus cryptandrus (Sand Dropseed)
Staphylea trifolia (Bladdernut)
Stenophragma thaliana (Mouse Ear Cress)
Streptopus lanceolatus (Rose Twisted Stalk)
Streptopus lanuginosus (Yellow Mandarin)
Streptopus longipes (Rose Twisted Stalk)
Streptopus roseus (Rose Twisted Stalk)
Strophostyles helvola (Trailing Wild Bean)
Struthiopteris pensylvanica (Ostrich Fern)
Stylipus vernus (Spring Avens)
Stylophorum diphyllum (Celandine Poppy)
Swertia caroliniensis (American Columbo)
Symphyotrichum boreale (Rush Aster)
Symphyotrichum ciliatum (Rayless Annual Aster)
Symphyotrichum ciliolatum (Fringed Blue Aster)
Symphyotrichum cordifolium (Heart-leaved Aster)
Symphyotrichum ericoides (Heath Aster)
Symphyotrichum firmum (Purple-stemmed Aster)
Symphyotrichum laeve (Smooth Aster)
Symphyotrichum lanceolatum (Panicled Aster)
Symphyotrichum lateriflorum (Calico Aster)
Symphyotrichum novae-angliae (New England Aster)
Symphyotrichum ontarione (Ontario Aster)
Symphyotrichum ontarionis (Ontario Aster)
Symphyotrichum oolentangiense (Azure Aster)
Symphyotrichum pilosum (Frost Aster)
Symphyotrichum praealtum (Willow Aster)
Symphyotrichum puniceum (Purple-stemmed Aster)
Symphyotrichum sagittifolium (Heart-leaved Aster)
Symphyotrichum subgeminatum (Fringed Blue Aster)
Symphyotrichum subulatum (Small Salt Marsh Aster)
Symphyotrichum urophyllum (Arrow-leaved Aster)
Symphyotrichum x amethystinum (Amethyst Aster)
Symplocarpus foetidus (Skunk Cabbage)
Syntherisma sanguinale (Large Crab Grass)
Syringa vulgaris (Common Lilac)

Taenidia integerrima (Yellow Pimpernel)
Tanacetum vulgare (Tansy)
Taraxacum dens-leonis (Common Dandelion)
Taraxacum officinale (Common Dandelion)
Taraxacum taraxacum (Common Dandelion)
Taraxacum vulgare (Common Dandelion)
Taxus canadensis (Yew)
Tetraneuris acaulis (Lakeside Daisy)
Tetraneuris herbacea (Lakeside Daisy)
Thalesia uniflora (One-flowered Cancerroot)
Thalictrum dioicum (Early Meadow Rue)
Thalictrum thalictroides (Rue Anemone)
Thaspium aureum (Golden Alexanders)
Thelypteris cristata (Crested Shield Fern)
Thelypteris dryopteris (Oak Fern)
Thelypteris filix-mas (Male Fern)
Thelypteris goldiana (Goldie's Fern)
Thelypteris hexagonoptera (Broad Beech Fern)
Thelypteris marginalis (Marginal Shield Fern)
Thelypteris noveboracensis (New York Fern)
Thelypteris palustris (Marsh Fern)
Thelypteris phegopteris (Long Beech Fern)
Thelypteris spinulosa (Spinulose Wood Fern)
Thlapsi bursa-pastoris (Shepherd's Purse)
Thuja occidentalis (Eastern White Cedar)
Tiarella cordifolia (Foamflower)
Tilia americana (Basswood)
Tiniaria convolvulus (Eurasian Black Bindweed)
Tithymalopsis corollata (Flowering Spurge)
Tofieldia glutinosa (Sticky Tofieldia)
Torilis anthriscus (Japanese Hedge Parsley)
Torilis japonica (Japanese Hedge Parsley)
Tovara virginiana (Jumpseed)
Toxicodendron altissimum (Ailanthus)
Toxicodendron radicans (Poison Ivy)
Toxicodendron rydbergii (Poison Ivy)
Toxicodendron vernix (Poison Sumac)
Tracaulon arifolium (Halberd-leaved Tearthumb)
Tracaulon sagittatum (Arrow-leaved Tearthumb)
Trachynotia polystachya (Tall Cord Grass)
Triantha glutinosa (Sticky Tofieldia)
Trichostema brachiatum (False Pennyroyal)
Trichostema dichotomum (Blue Curls)
Trientalis borealis (Starflower)
Triglochin elata (Seaside Arrowgrass)
Triglochin maritima (Seaside Arrowgrass)
Triglochin maritimum (Seaside Arrowgrass)
Triglochin palustris (Marsh Arrowgrass)
Trillium cernuum (Nodding Trillium)
Trillium erectum (Red Trillium)
Trillium erythrocarpum (Painted Trillium)
Trillium grandiflorum (White Trillium)
Trillium luteum (Yellow Trillium)
Trillium rhomboideum grandiflorum (White Trillium)
Trillium undulatum (Painted Trillium)
Triodanis perfoliata (Venus's Looking-glass)
Triosteum aurantiacum (Orange-fruited Horse Gentian)
Triosteum perfoliatum (Wild Coffee)
Tripolium angustum (Rayless Annual Aster)
Tripolium subulatum (Small Salt Marsh Aster)
Triticum dasystachyum (Great Lakes Wheat Grass)
Triticum trachycaulum (Wild Rye)
Tsuga canadensis (Eastern Hemlock)
Tulipa sylvestris (Tulip)
Tussilago farfara (Coltsfoot)
Typha angustifolia (Narrow-leaved Cattail)
Typha latifolia (Common Cattail)

Unifolium canadense (Canada Mayflower)
Urachne racemosa (Black-seed Rice Grass)
Urtica pumila (Clearweed)
Utricularia biflora (Humped Bladderwort)
Utricularia cornuta (Horned Bladderwort)
Utricularia fornicata (Humped Bladderwort)
Utricularia gibba (Humped Bladderwort)
Utricularia intermedia (Flat-leaved Bladderwort)
Utricularia vulgaris (Common Bladderwort)
Uva-ursi uva-ursi (Bearberry)
Uvularia grandiflora (Large-flowered Bellwort)
Uvularia perfoliata (Perfoliate Bellwort)
Uvularia sessilifolia (Sessile-leaved Bellwort)

Vaccinium hispidulum (Creeping Snowberry)
Vaccinium macrocarpon (Large Cranberry)
Vaccinium microcarpum (Small Cranberry)
Vaccinium myrtilloides (Velvetleaf Blueberry)
Vaccinium oblongifolium (Large Cranberry)
Vaccinium oxycoccos (Small Cranberry)
Vaccinium propinquum (Large Cranberry)
Vagnera racemosa (False Solomon's Seal)
Vagnera stellata (Star-flowered Solomon's Seal)
Veratrum luteum (Devil's Bit)
Verbascum blattaria (Moth Mullein)
Verbascum nigrum (Dark Mullein)
Verbascum thapsus (Common Mullein)
Verbena hastata (Blue Vervain)
Verbena paniculata (Blue Vervain)
Verbena pinnatifida (Blue Vervain)
Verbena rigens (Hoary Vervain)
Verbena stricta (Hoary Vervain)
Vernonia altissima (Tall Ironweed)
Vernonia gigantea (Tall Ironweed)
Vernonia noveboracensis (Tall Ironweed)
Veronica anagallis (Water Speedwell)
Veronica anagallis-aquatica (Water Speedwell)
Veronica buxbaumii (Persian Speedwell)
Veronica catenata (Water Speedwell)
Veronica chamaedrys (Bird's-eye Speedwell)
Veronica comosa (Water Speedwell)
Veronica connata (Water Speedwell)
Veronica filiformis (Slender Speedwell)
Veronica officinalis (Common Speedwell)
Veronica persica (Persian Speedwell)
Veronica scutellata (Marsh Speedwell)
Veronica serpyllifolia (Thyme-leaved Speedwell)
Veronica tournefortii (Persian Speedwell)
Veronica undulata (Water Speedwell)
Veronica virginica (Culver's Root)
Veronicastrum virginicum (Culver's Root)
Viburnum alnifolium (Hobblebush)
Viburnum dentatum (Smooth Arrowwood)
Viburnum lantanoides (Hobblebush)
Viburnum lentago (Nannyberry)
Viburnum nudum (Wild Raisin)
Viburnum rafinesqueanum (Downy Arrowwood)
Viburnum rafinesquianum (Downy Arrowwood)
Viburnum recognitum (Smooth Arrowwood)
Vilfa tenacissima (Sand Dropseed)
Vinca minor (Periwinkle)
Vincetoxicum album (White Swallowwort)
Vincetoxicum hirundinaria (White Swallowwort)
Vincetoxicum medium (Pale Swallowwort)
Vincetoxicum nigrum (Black Swallowwort)
Vincetoxicum officinale (White Swallowwort)
Vincetoxicum rossicum (Pale Swallowwort)
Viola adunca (Sand Violet)
Viola amoena (Sweet White Violet)
Viola bicolor (Field Pansy)
Viola blanda (Sweet White Violet)
Viola brainerdii (Kidney-leaved Violet)
Viola canadensis (Canada Violet)
Viola concolor (Green Violet)
Viola conspersa (Dog Violet)
Viola cucullata (Marsh Blue Violet)
Viola eriocarpa (Downy Yellow Violet)
Viola esculenta (Palmate Violet)
Viola falcata (Palmate Violet)
Viola incognita (Sweet White Violet)
Viola kitaibeliana (Field Pansy)
Viola labradorica (Labrador Violet)
Viola longipes (Sand Violet)
Viola macloskeyi (Northern White Violet)
Viola muhlenbergii (Dog Violet)
Viola nephrophylla (Northern Bog Violet)
Viola pallens (Northern White Violet)
Viola palmata (Palmate Violet)
Viola papilionacea (Marsh Blue Violet)
Viola papilionacea (Common Blue Violet)
Viola pedata (Birdfoot Violet)
Viola pensylvanica (Downy Yellow Violet)
Viola pubescens (Downy Yellow Violet)
Viola punctata (Labrador Violet)
Viola rafinesquei (Field Pansy)
Viola rafinesquii (Field Pansy)
Viola renifolia (Kidney-leaved Violet)
Viola rostrata (Long-spurred Violet)
Viola rotundifolia (Round-leaved Violet)
Viola rugulosa (Canada Violet)
Viola sagittata (Arrow-leaved Violet)
Viola sororia (Woolly Blue Violet)
Viola stoneana (Palmate Violet)
Viola striata (Pale Violet)
Viola triloba (Palmate Violet)
Viola vagula (Northern Bog Violet)
Virgulus ericoides (Heath Aster)
Virgulus novae-angliae (New England Aster)
Volvulus spithamaeus (Upright Bindweed)

Waldsteinia fragarioides (Barren Strawberry)
Washingtonia claytoni (Sweet Cicely)
Washingtonia longistylis (Aniseroot)
Woodsia glabella (Smooth Woodsia)
Woodwardia virginica (Virginia Chain Fern)

Yucca filamentosa (Yucca)

Zanthoxylum americanum (Prickly Ash)
Zizia aurea (Golden Alexanders)
Zizia integerrima (Yellow Pimpernel)

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

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Ontario Wildflowers   Ontario Trees & Shrubs   Ontario Ferns   Ontario Grasses   Ontario Insects   World of Mosses
Wildwood Canada   Mumart   Wild Ontario   Ontario Trackers   Orangeville Trackers   Wildwood Trackers   Earth Caretaker

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Plants - Scientific (Latin) NamesAll Scientific Names for all species on this site

Plants - Scientific (Latin) Names
All Scientific Names for all species on this site