A note about Common Names
Common names of plants vary widely from region to region, from person to person, and from book to book. The common names I have used for each species on this website are usually the ones from Newcomb's Wildflower Guide. There are some exceptions, however (for example, what I call Heath Aster (Symphyotrichum ericoides) is not what is listed as "Heath Aster" in Newcomb's).

I have included in this list all the common names that I am aware of. Therefore, a species may be listed here more than once.

There is also on this site a list of just the common names I have used to identify each species on this site (each species listed only once). CLICK HERE to go to that list.

If you can't find what you are looking for, click here

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

Aconite, Winter (Eranthis hyemalis)
Adder's Mouth, Green (Malaxis unifolia)
Adder's Tongue, White (Erythronium albidum)
Adder's Tongue, Yellow (Erythronium americanum)
Agrimony, Many-flowered (Agrimonia parviflora)
Agrimony, Small-flowered (Agrimonia parviflora)
Agrimony, Tall (Agrimonia gryposepala)
Agrimony, Tall Hairy (Agrimonia gryposepala)
Alexanders, Dark Purple (Angelica atropurpurea)
Alexanders, Golden (Zizia aurea)
Alyssum, Hoary (Berteroa incana)
Amaranth, Green (Amaranthus retroflexus)
Anemone, Canada (Anemone canadensis)
Anemone, Long-fruited (Anemone cylindrica)
Anemone, Long-headed (Anemone cylindrica)
Anemone, Northern (Anemone parviflora)
Anemone, Rue (Thalictrum thalictroides)
Anemone, Small-flowered (Anemone parviflora)
Anemone, Tall (Anemone virginiana)
Anemone, Wood (Anemone quinquefolia)
Angelica, Great (Angelica atropurpurea)
Angelica, Purple-stemmed (Angelica atropurpurea)
Apple, May (Podophyllum peltatum)
Apple-of-Peru, Physalis-like (Nicandra physalodes)
Arabis, Smooth (Borodinia laevigata)
Arbutus, Trailing (Epigaea repens)
Archangel, Yellow (Lamiastrum galeobdolon)
Arrow Grass, Seaside (Triglochin maritima)
Arrowgrass, Common Bog (Triglochin maritima)
Arrowgrass, Marsh (Triglochin palustris)
Arrowgrass, Seaside (Triglochin maritima)
Arrowgrass, Slender Bog (Triglochin palustris)
Arrowhead, Common (Sagittaria latifolia)
Artichoke, Jerusalem (Helianthus tuberosus)
Arum, Dragon (Arisaema dracontium)
Arum, Water (Calla palustris)
Asparagus, Garden (Asparagus officinalis)
Asphodel, Sticky False (Triantha glutinosa)
Aster, Amethyst (Symphyotrichum x amethystinum)
Aster, Annual Salt Marsh (Symphyotrichum subulatum)
Aster, Arrow-leaved (Symphyotrichum urophyllum)
Aster, Azure (Symphyotrichum oolentangiense)
Aster, Blue Wood (Symphyotrichum cordifolium)
Aster, Bog (Oclemena nemoralis)
Aster, Calico (Symphyotrichum lateriflorum)
Aster, Ciliolate (Symphyotrichum ciliolatum)
Aster, Common Blue Wood (Symphyotrichum cordifolium)
Aster, Flat-topped (Doellingeria umbellata)
Aster, Flat-topped White (Doellingeria umbellata)
Aster, Fringed Blue (Symphyotrichum ciliolatum)
Aster, Frost (Symphyotrichum pilosum)
Aster, Frostweed (Symphyotrichum pilosum)
Aster, Glaucous (Symphyotrichum laeve)
Aster, Glossy-leaved (Symphyotrichum puniceum)
Aster, Hairy White Old Field (Symphyotrichum pilosum)
Aster, Heart-leaved (Symphyotrichum cordifolium)
Aster, Heart-leaved (Eurybia divaricata)
Aster, Heath (Symphyotrichum ericoides)
Aster, Heath (Symphyotrichum pilosum)
Aster, Heath White (Symphyotrichum ericoides)
Aster, Lance-leaved (Symphyotrichum lanceolatum)
Aster, Large-leaved (Eurybia macrophylla)
Aster, Lindley's (Symphyotrichum ciliolatum)
Aster, Many-flowered (Symphyotrichum ericoides)
Aster, Mountain (Oclemena acuminata)
Aster, New England (Symphyotrichum novae-angliae)
Aster, Northern (Symphyotrichum boreale)
Aster, Northern Bog (Symphyotrichum boreale)
Aster, Old Field (Symphyotrichum pilosum)
Aster, One-sided (Symphyotrichum lateriflorum)
Aster, Ontario (Symphyotrichum ontarionis)
Aster, Panicled (Symphyotrichum lanceolatum)
Aster, Pringle's (Symphyotrichum pilosum)
Aster, Purple-stemmed (Symphyotrichum puniceum)
Aster, Rayless Annual (Symphyotrichum ciliatum)
Aster, Rush (Symphyotrichum boreale)
Aster, Sharp-leaved (Oclemena acuminata)
Aster, Shreber's (Eurybia schreberi)
Aster, Sky Blue (Symphyotrichum oolentangiense)
Aster, Slender White (Symphyotrichum boreale)
Aster, Small Salt Marsh (Symphyotrichum subulatum)
Aster, Small White (Symphyotrichum lateriflorum)
Aster, Smooth (Symphyotrichum laeve)
Aster, Smooth Blue (Symphyotrichum laeve)
Aster, Smooth-leaved (Symphyotrichum laeve)
Aster, Starved (Symphyotrichum lateriflorum)
Aster, Swamp (Symphyotrichum puniceum)
Aster, Tufted White Prairie (Symphyotrichum ericoides)
Aster, Umbellate (Doellingeria umbellata)
Aster, Upland White (Solidago ptarmicoides)
Aster, White Arrowleaf (Symphyotrichum urophyllum)
Aster, White Panicle (Symphyotrichum lanceolatum)
Aster, White Wood (Eurybia divaricata)
Aster, White Woodland (Symphyotrichum lateriflorum)
Aster, Whorled (Oclemena acuminata)
Aster, Whorled Wood (Oclemena acuminata)
Aster, Willow (Symphyotrichum praealtum)
Aster, Wood (Oclemena nemoralis)
Avens, Canada (Geum canadense)
Avens, Catlings (Geum X catlingii)
Avens, Common (Geum aleppicum)
Avens, Early Water (Geum vernum)
Avens, Purple (Geum rivale)
Avens, Spring (Geum vernum)
Avens, Three-flowered (Geum triflorum)
Avens, Water (Geum rivale)
Avens, White (Geum canadense)
Avens, Wood (Geum urbanum)
Avens, Yellow (Geum aleppicum)

Balsam Apple, Wild (Echinocystis lobata)
Baneberry, Red (Actaea rubra)
Baneberry, White (Actaea pachypoda)
Bartonia, Yellow (Bartonia virginica)
Basil, Field (Clinopodium vulgare)
Basil, Wild (Clinopodium vulgare)
Beach Heath, Woolly (Hudsonia tomentosa)
Bean, Trailing Wild (Strophostyles helvola)
Bearberry, Common (Arctostaphylos uva-ursi)
Beardtongue, Foxglove (Penstemon digitalis)
Beardtongue, Hairy (Penstemon hirsutus)
Beardtongue, White (Penstemon digitalis)
Bedstraw, Bog (Galium labradoricum)
Bedstraw, Fragrant (Galium triflorum)
Bedstraw, Labrador (Galium labradoricum)
Bedstraw, Labrador Marsh (Galium labradoricum)
Bedstraw, Lady's (Galium verum)
Bedstraw, Purple (Galium latifolium)
Bedstraw, Small (Galium trifidum)
Bedstraw, Sweet-scented (Galium triflorum)
Bedstraw, Three-cleft (Galium trifidum)
Bedstraw, Yellow (Galium verum)
Bee Balm, American (Monarda didyma)
Beechdrops, False (Hypopitys monotropa)
Beechdrops, Virginia (Epifagus virginiana)
Beggarticks, Water (Bidens beckii)
Bellflower, American (Campanula americana)
Bellflower, Bedstraw (Campanula aparinoides)
Bellflower, Bluebell (Campanula rotundifolia)
Bellflower, Clustered (Campanula glomerata)
Bellflower, Creeping (Campanula rapunculoides)
Bellflower, Marsh (Campanula aparinoides)
Bellflower, Tall (Campanula americana)
Bellwort, Clasping (Triodanis perfoliata)
Bellwort, Large-flowered (Uvularia grandiflora)
Bellwort, Perfoliate (Uvularia perfoliata)
Bellwort, Sessile-leaved (Uvularia sessilifolia)
Bellwort, Wild (Uvularia sessilifolia)
Bergamot, Wild (Monarda fistulosa)
Betony, Canada Wood (Pedicularis canadensis)
Betony, Head (Pedicularis canadensis)
Betony, Wood (Pedicularis canadensis)
Bindweed, Black (Fallopia convolvulus)
Bindweed, Eurasian Black (Fallopia convolvulus)
Bindweed, Field (Convolvulus arvensis)
Bindweed, Hedge (Calystegia sepium)
Bindweed, Low (Calystegia spithamaea)
Bindweed, Low False (Calystegia spithamaea)
Bindweed, Small (Convolvulus arvensis)
Bindweed, Upright (Calystegia spithamaea)
Bird's Nest, Giant (Pterospora andromedea)
Bishop's Cap, Naked (Mitella nuda)
Bishop's Cap, Two-leaved (Mitella diphylla)
Bistort, Alpine (Bistorta vivipara)
Bladderwort, Common (Utricularia vulgaris)
Bladderwort, Flat-leaved (Utricularia intermedia)
Bladderwort, Greater (Utricularia vulgaris)
Bladderwort, Horned (Utricularia cornuta)
Bladderwort, Humped (Utricularia gibba)
Bladderwort, Intermediate (Utricularia intermedia)
Bladderwort, Swollen-spurred (Utricularia gibba)
Blanket Flower, Showy (Gaillardia pulchella)
Blazing Star, Cylindric (Liatris cylindracea)
Blazing Star, Dense (Liatris spicata)
Blazing Star, Spiked (Liatris spicata)
Bleeding Heart, Wild (Dicentra canadensis)
Blephilia, Downy (Blephilia ciliata)
Blue Curls, Forked (Trichostema dichotomum)
Blue Flag, American (Iris versicolor)
Blue Flag, Larger (Iris versicolor)
Blue Flag, Multi-coloured (Iris versicolor)
Blue Flag, Northern (Iris versicolor)
Blue-eyed Grass, Common (Sisyrinchium montanum)
Blue-eyed Grass, Little (Sisyrinchium montanum)
Blue-eyed Grass, Little Common (Sisyrinchium montanum)
Blue-eyed Grass, Montane (Sisyrinchium montanum)
Blue-eyed Grass, Narrow-leaved (Sisyrinchium mucronatum)
Blue-eyed Grass, Pointed (Sisyrinchium angustifolium)
Blue-eyed Grass, Slender (Sisyrinchium mucronatum)
Blue-eyed Grass, Stout (Sisyrinchium angustifolium)
Blue-eyed Grass, White (Sisyrinchium albidum)
Bluebells, Northern (Mertensia paniculata)
Bluehearts, American (Buchnera americana)
Boneset, Common (Eupatorium perfoliatum)
Boneset, Purple (Eutrochium purpureum)
Bower, Virgin's (Clematis virginiana)
Broom-rape, Naked (Orobanche uniflora)
Broom-rape, One-flowered (Orobanche uniflora)
Buckwheat, Wild (Fallopia convolvulus)
Bugloss, Sea (Mertensia maritima)
Bur Reed, Floating (Sparganium fluctuans)
Bur Reed, Lesser (Sparganium americanum)
Bur Reed, Nuttall's (Sparganium americanum)
Bur Reed, Three-square (Sparganium americanum)
Bur Reed, Water (Sparganium fluctuans)
Burdock, Common (Arctium minus)
Burnet, Salad (Poterium sanguisorba)
Burnet, Small (Poterium sanguisorba)
Bush Clover, Round-headed (Lespedeza capitata)
Buttercup, Bristly (Ranunculus pensylvanicus)
Buttercup, Celery-leaved (Ranunculus sceleratus)
Buttercup, Cursed (Ranunculus sceleratus)
Buttercup, Fig (Ficaria verna)
Buttercup, Hispid (Ranunculus hispidus)
Buttercup, Hooked (Ranunculus recurvatus)
Buttercup, Kidney-leaved (Ranunculus abortivus)
Buttercup, Small Yellow Water (Ranunculus gmelinii)
Buttercup, Swamp (Ranunculus hispidus)
Buttercup, White Water (Ranunculus aquatilis)

Cactus, Compressed (Opuntia humifusa)
Cactus, Prickly Pear (Opuntia humifusa)
Calamint, Limestone (Clinopodium arkansanum)
Calamint, Low (Clinopodium arkansanum)
Calamint, Ozark (Clinopodium arkansanum)
Calamint, Wild (Clinopodium arkansanum)
Calla, Wild (Calla palustris)
Campion, Bladder (Silene latifolia)
Campion, Bladder (Silene vulgaris)
Campion, Red (Lychnis dioica)
Campion, White (Silene latifolia)
Cancer Root, American (Conopholis americana)
Cancerroot, One-flowered (Orobanche uniflora)
Cancerwort, Roundleaf (Kickxia spuria)
Cancerwort, Sharpleaf (Kickxia elatine)
Candles, Swamp (Lysimachia terrestris)
Cardinal Flower, Blue (Lobelia siphilitica)
Carrion Flower, Common (Smilax lasioneura)
Carrion Flower, Hairy-nerved (Smilax lasioneura)
Carrion Flower, Herbaceous (Smilax herbacea)
Carrion Flower, Illinois (Smilax illinoensis)
Carrot, Wild (Daucus carota)
Cat's-foot, Field (Antennaria neglecta)
Catchfly, Night-flowering (Silene noctiflora)
Catchfly, Wide-leaved Bladder (Silene latifolia)
Cattail, Broad-leaved (Typha latifolia)
Cattail, Common (Typha latifolia)
Cattail, Narrow-leaved (Typha angustifolia)
Celandine, Greater (Chelidonium majus)
Celandine, Lesser (Ficaria verna)
Centaury, Branched (Centaurium pulchellum)
Centaury, Branching (Centaurium pulchellum)
Centaury, Common (Centaurium erythraea)
Centaury, Erythraea-like (Centaurium erythraea)
Centaury, European (Centaurium erythraea)
Centaury, Lesser (Centaurium pulchellum)
Chervil, Wild (Anthriscus sylvestris)
Chickweed, Field (Cerastium arvense)
Chickweed, Larger Mouse-ear (Cerastium fontanum)
Chickweed, Meadow (Cerastium arvense)
Chickweed, Mouse-ear (Cerastium fontanum)
Chives, Wild (Allium schoenoprasum)
Cicely, Smoother Sweet (Osmorhiza longistylis)
Cicely, Sweet (Osmorhiza claytonii)
Cicely, Woolly Sweet (Osmorhiza claytonii)
Cinquefoil, Common (Potentilla simplex)
Cinquefoil, Old Field (Potentilla simplex)
Cinquefoil, Prairie (Drymocallis arguta)
Cinquefoil, Silvery (Potentilla anserina)
Cinquefoil, Tall (Drymocallis arguta)
Cinquefoil, Three-leaved (Sibbaldia tridentata)
Cinquefoil, Three-toothed (Sibbaldia tridentata)
Clammyweed, Roughseed (Polanisia dodecandra)
Clearweed, Dwarf (Pilea pumila)
Clearweed, Wood (Pilea pumila)
Clintonia, Yellow (Clintonia borealis)
Clover, Purple Prairie (Dalea purpurea)
Cockle, Sticky (Silene noctiflora)
Cockle, White (Silene latifolia)
Coffee, Wild (Triosteum perfoliatum)
Coffee, Wild (Triosteum aurantiacum)
Cohosh, Blue (Caulophyllum giganteum)
Cohosh, Blue (Caulophyllum thalictroides)
Cohosh, Green-flowered Blue (Caulophyllum thalictroides)
Cohosh, Purple-flowered Blue (Caulophyllum giganteum)
Colicroot, Northern White (Aletris farinosa)
Coltsfoot, Arctic Sweet (Petasites frigidus)
Coltsfoot, Northern Sweet (Petasites frigidus)
Coltsfoot, Sweet (Petasites frigidus)
Columbine, Wild (Aquilegia canadensis)
Columbo, American (Frasera caroliniensis)
Coneflower, Cut-leaved (Rudbeckia laciniata)
Coneflower, Gray-headed (Ratibida pinnata)
Coneflower, Green-headed (Rudbeckia laciniata)
Coneflower, Pale Purple (Echinacea pallida)
Coneflower, Pinnate Prairie (Ratibida pinnata)
Coneflower, Purple (Echinacea purpurea)
Coneflower, Tall (Rudbeckia laciniata)
Coontail, Common (Ceratophyllum demersum)
Coralroot, Early (Corallorhiza trifida)
Coralroot, Large (Corallorhiza maculata)
Coralroot, Northern (Corallorhiza trifida)
Coralroot, Spotted (Corallorhiza maculata)
Coralroot, Striped (Corallorhiza striata)
Coralroot, Three-parted (Corallorhiza trifida)
Coralroot, Yellow (Corallorhiza trifida)
Coreopsis, Tall (Coreopsis tripteris)
Corn, Squirrel (Dicentra canadensis)
Cornel, Dwarf (Cornus canadensis)
Corydalis, Golden (Corydalis aurea)
Corydalis, Yellow (Corydalis flavula)
Cowbane, Spotted (Cicuta maculata)
Cowwheat, Narrowleaf (Melampyrum lineare)
Cranberry, American (Vaccinium macrocarpon)
Cranberry, European (Vaccinium oxycoccos)
Cranberry, Large (Vaccinium macrocarpon)
Cranberry, Small (Vaccinium oxycoccos)
Cranesbill, Bicknell's (Geranium bicknellii)
Cranesbill, Spotted (Geranium maculatum)
Creeper, Trumpet (Campsis radicans)
Creeper, Virginia (Parthenocissus quinquefolia)
Cress, Common Winter (Barbarea vulgaris)
Cress, Dock (Lapsana communis)
Cress, Hairy Bitter (Cardamine hirsuta)
Cress, Hairy Rock (Arabis hirsuta)
Cress, Lyre-leaved Rock (Arabidopsis lyrata)
Cress, Mouse Ear (Arabidopsis thaliana)
Cress, Purple (Cardamine douglassii)
Cress, Smooth Rock (Borodinia laevigata)
Cress, Spring (Cardamine bulbosa)
Crocus, Dutch (Crocus vernus)
Crowfoot, Bristly (Ranunculus pensylvanicus)
Crowfoot, Cursed (Ranunculus sceleratus)
Crowfoot, Hooked (Ranunculus recurvatus)
Crowfoot, Rough (Ranunculus recurvatus)
Crowfoot, Small Yellow Water (Ranunculus gmelinii)
Crowfoot, Small-flowered (Ranunculus abortivus)
Crowfoot, White Water (Ranunculus aquatilis)
Cucumber Root, Indian (Medeola virginiana)
Cucumber, Indian (Medeola virginiana)
Cucumber, One-seeded Bur (Sicyos angulatus)
Cucumber, Prickly (Echinocystis lobata)
Cucumber, Wild (Echinocystis lobata)
Culver's Root, Beaumont's (Veronicastrum virginicum)
Culver's Root, Virginia (Veronicastrum virginicum)

Daisy, English (Bellis perennis)
Daisy, Garden (Bellis perennis)
Daisy, Lakeside (Tetraneuris herbacea)
Daisy, Oxeye (Leucanthemum vulgare)
Dandelion, Common (Taraxacum officinale)
Disporum, Hairy (Prosartes lanuginosa)
Dock, British (Rumex britannica)
Dock, Great Water (Rumex britannica)
Dock, Greater Water (Rumex britannica)
Dock, Prairie (Silphium terebinthinaceum)
Dock, Water (Rumex britannica)
Dogwood, Bunchberry (Cornus canadensis)
Duckweed, Common (Lemna minor)
Duckweed, Lesser (Lemna minor)

Echinacea, Pale (Echinacea pallida)

Fairy Bells, Yellow (Prosartes lanuginosa)
Fawnlily, White (Erythronium albidum)
Figwort, Maryland (Scrophularia marilandica)
Five-finger, Decumbent (Potentilla simplex)
Flag, Sword (Iris pseudacorus)
Flag, Water (Iris versicolor)
Fleabane, Poor Robin (Erigeron pulchellus)
Fluellin, Female (Kickxia spuria)
Fluvellin, Sharpoint (Kickxia elatine)
Frog-bit, Eurpoean (Hydrocharis morsus-ranae)

Gaillardia, Showy (Gaillardia pulchella)
Gentian, American Spurred (Halenia deflexa)
Gentian, Lesser Fringed (Gentianopsis virgata)
Gentian, Narrow-leaved (Gentiana linearis)
Gentian, Narrowleaf (Gentiana linearis)
Gentian, Orange-fruited Horse (Triosteum aurantiacum)
Gentian, Smaller Fringed (Gentianopsis virgata)
Gentian, Spurred (Halenia deflexa)
Geranium, Bicknell's (Geranium bicknellii)
Geranium, Robert's (Geranium robertianum)
Geranium, Rock (Heuchera americana)
Geranium, Spotted (Geranium maculatum)
Geranium, Wild (Geranium maculatum)
Ginger, Indian (Asarum canadense)
Ginger, Wild (Asarum canadense)
Ginseng, Dwarf (Panax trifolius)
Ginseng, Five-leaved (Panax quinquefolius)
Goldenrod, Atlantic (Solidago arguta)
Goldenrod, Blue-stem (Solidago caesia)
Goldenrod, Blue-stemmed (Solidago caesia)
Goldenrod, Bog (Solidago uliginosa)
Goldenrod, Broad-leaved (Solidago flexicaulis)
Goldenrod, Canada (Solidago canadensis)
Goldenrod, Cut-leaved (Solidago arguta)
Goldenrod, Early (Solidago juncea)
Goldenrod, Evergreen (Solidago sempervirens)
Goldenrod, Flat Top (Euthamia graminifolia)
Goldenrod, Flat-topped Bushy (Euthamia graminifolia)
Goldenrod, Giant (Solidago gigantea)
Goldenrod, Grass-leaved (Euthamia graminifolia)
Goldenrod, Gray (Solidago nemoralis)
Goldenrod, Gray-stemmed (Solidago nemoralis)
Goldenrod, Grey (Solidago nemoralis)
Goldenrod, Hairy (Solidago hispida)
Goldenrod, Hard-leaved (Solidago rigida)
Goldenrod, Houghton's (Solidago houghtonii)
Goldenrod, Lance-leaved (Euthamia graminifolia)
Goldenrod, Late (Solidago altissima)
Goldenrod, Late (Solidago gigantea)
Goldenrod, Marsh (Solidago uliginosa)
Goldenrod, Noble (Solidago speciosa)
Goldenrod, Ohio (Solidago ohioensis)
Goldenrod, Rigid (Solidago rigida)
Goldenrod, Rock (Solidago canadensis)
Goldenrod, Rough (Solidago rugosa)
Goldenrod, Rough-leaved (Solidago patula)
Goldenrod, Rough-stemmed (Solidago rugosa)
Goldenrod, Rugged (Solidago squarrosa)
Goldenrod, Seaside (Solidago sempervirens)
Goldenrod, Sharp-leaved (Solidago arguta)
Goldenrod, Sharp-toothed (Solidago juncea)
Goldenrod, Showy (Solidago speciosa)
Goldenrod, Smooth (Solidago gigantea)
Goldenrod, Spreading (Solidago patula)
Goldenrod, Stiff (Solidago rigida)
Goldenrod, Stiff-leaved (Solidago rigida)
Goldenrod, Stout (Solidago squarrosa)
Goldenrod, Stout Ragged (Solidago squarrosa)
Goldenrod, Tall (Solidago altissima)
Goldenrod, Tall (Solidago gigantea)
Goldenrod, Tall Hairy (Solidago rugosa)
Goldenrod, Upland (Solidago hispida)
Goldenrod, White (Solidago bicolor)
Goldenrod, Wood (Solidago nemoralis)
Goldenrod, Wreath (Solidago caesia)
Goldenrod, Wrinkleleaf (Solidago rugosa)
Goldenrod, Zigzag (Solidago flexicaulis)
Goosefoot, White (Chenopodium album)
Grass-of-Parnassus, American (Parnassia glauca)
Grass-of-Parnassus, Blue-green (Parnassia glauca)
Grass-of-Parnassus, Fen (Parnassia glauca)
Gromwell, Carolina (Lithospermum caroliniense)
Ground Cherry, Clammy (Physalis heterophylla)
Ground Cherry, Smooth (Physalis longifolia)
Groundsel, Platte (Packera plattensis)

Heather, False (Hudsonia tomentosa)
Hedge Parsley, Erect (Torilis japonica)
Hedge Parsley, Japanese (Torilis japonica)
Hedge Parsley, Upright (Torilis japonica)
Hellebore, Bastard (Epipactis helleborine)
Hellebore, Winter (Eranthis hyemalis)
Helleborine, Broadleaf (Epipactis helleborine)
Helleborine, Common (Epipactis helleborine)
Hemlock, Bulb-bearing Water (Cicuta bulbifera)
Hemlock, Bulblet-bearing Water (Cicuta bulbifera)
Hemlock, Bulbous Water (Cicuta bulbifera)
Hemlock, Poison (Conium maculatum)
Hemlock, Spotted Water (Cicuta maculata)
Hemlock, Water (Cicuta maculata)
Hepatica, Round-lobed (Anemone americana)
Hepatica, Sharp-lobed (Anemone acutiloba)
Hogweed, Little (Portulaca oleracea)
Honeysuckle, Bush (Diervilla lonicera)
Horsemint, Dotted (Monarda punctata)
Horsemint, Spotted (Monarda punctata)
Horsemint, Wild (Monarda fistulosa)
Hound's Tongue, Common (Cynoglossum officinale)
Hyacinth, Common Grape (Muscari botryoides)
Hyacinth, Grape (Muscari botryoides)
Hyssop, Catnip Giant (Agastache nepetoides)
Hyssop, Yellow Giant (Agastache nepetoides)

Indian Pipe, One-flowered (Monotropa uniflora)
Indigo, Desert False (Amorpha fruticosa)
Indigo, False (Amorpha fruticosa)
Indigo, Shrubby False (Amorpha fruticosa)
Iris, Blue Flag (Iris versicolor)
Iris, Dwarf Lake (Iris lacustris)
Iris, Yellow (Iris pseudacorus)
Ironweed, Tall (Vernonia gigantea)
Ivy, Climbing Poison (Toxicodendron rydbergii)
Ivy, Ground (Glechoma hederacea)
Ivy, Poison (Toxicodendron rydbergii)

Jack-in-the-Pulpit, Small (Arisaema triphyllum)
Jarvil, Sweet (Osmorhiza claytonii)
Jewelweed, Pale (Impatiens pallida)
Joe Pye Weed, Purple (Eutrochium purpureum)
Joe Pye Weed, Spotted (Eutrochium maculatum)
Joe Pye Weed, Sweet-scented (Eutrochium purpureum)
Jointweed, Coast (Polygonum articulatum)
Jointweed, Northern (Polygonum articulatum)
Jointweed, Sand (Polygonum articulatum)

Knotweed, Japanese (Fallopia japonica)
Knotweed, Virginia (Persicaria virginiana)

Ladies' Tresses, Drooping (Spiranthes cernua)
Ladies' Tresses, Great Plains (Spiranthes magnicamporum)
Ladies' Tresses, Hooded (Spiranthes romanzoffiana)
Ladies' Tresses, Nodding (Spiranthes cernua)
Ladies' Tresses, Northern Slender (Spiranthes lacera)
Ladies' Tresses, Prairie (Spiranthes magnicamporum)
Ladies' Tresses, Shining (Spiranthes lucida)
Ladies' Tresses, Shiny (Spiranthes lucida)
Ladies' Tresses, Wide-leaved (Spiranthes lucida)
Lady's Slipper, Hybrid (Cypripedium parviflorum X C. candidum)
Lady's Slipper, Large Yellow (Cypripedium parviflorum var pubescens)
Lady's Slipper, Larger Yellow (Cypripedium parviflorum var pubescens)
Lady's Slipper, Lesser Yellow (Cypripedium parviflorum var makasin)
Lady's Slipper, Pink (Cypripedium acaule)
Lady's Slipper, Queen (Cypripedium reginae)
Lady's Slipper, Ram's Head (Cypripedium arietinum)
Lady's Slipper, Showy (Cypripedium reginae)
Lady's Slipper, Small White (Cypripedium candidum)
Lady's Slipper, Small Yellow (Cypripedium parviflorum var makasin)
Lady's Slipper, Smaller Yellow (Cypripedium parviflorum var makasin)
Lady's Slipper, Stemless (Cypripedium acaule)
Leatherleaf, Calyxed (Chamaedaphne calyculata)
Leek, Wild (Allium tricoccum)
Lettuce, Glaucous White (Nabalus racemosus)
Lettuce, Tall White (Nabalus altissimus)
Lettuce, White (Nabalus albus)
Lily, Bluebead (Clintonia borealis)
Lily, Corn (Clintonia borealis)
Lily, Flag (Iris versicolor)
Lily, Grass (Ornithogalum umbellatum)
Lily, Michigan (Lilium michiganense)
Lily, Red (Lilium philadelphicum)
Lily, Snake (Iris versicolor)
Lily, Trout (Erythronium americanum)
Lily, White Trout (Erythronium albidum)
Lily, Wild Lent (Narcissus pseudonarcissus)
Lily, Wood (Lilium philadelphicum)
Lily-of-the-Valley, False (Maianthemum canadense)
Lily-of-the-Valley, Wild (Maianthemum canadense)
Lily-of-the-Valley, Wild (Maianthemum stellatum)
Liverleaf, American (Anemone americana)
Liverleaf, Round-lobed (Anemone americana)
Liverleaf, Sharp-lobed (Anemone acutiloba)
Lobelia, Great (Lobelia siphilitica)
Looking-glass, Venus's (Triodanis perfoliata)
Loosestrife, Earth (Lysimachia terrestris)
Loosestrife, Four-flowered (Lysimachia quadriflora)
Loosestrife, Four-flowered Yellow (Lysimachia quadriflora)
Loosestrife, Four-leaved (Lysimachia quadrifolia)
Loosestrife, Fringed (Lysimachia ciliata)
Loosestrife, Prairie (Lysimachia quadriflora)
Loosestrife, Purple (Lythrum salicaria)
Loosestrife, Spiked (Lythrum salicaria)
Loosestrife, Swamp (Decodon verticillatus)
Loosestrife, Tufted (Lysimachia thyrsiflora)
Loosestrife, Whorled (Lysimachia quadrifolia)
Loosestrife, Whorled Yellow (Lysimachia quadrifolia)
Loosestrife, Yellow (Lysimachia terrestris)
Lopseed, Slender-spiked (Phryma leptostachya)
Lungwort, Sea (Mertensia maritima)
Lungwort, Tall (Mertensia paniculata)
Lupine, Perennial (Lupinus perennis)
Lupine, Wild (Lupinus perennis)
Lychnis, Evening (Silene latifolia)

Mallow, Indian (Abutilon theophrasti)
Mandarin, Rose (Streptopus lanceolatus)
Mandarin, Yellow (Prosartes lanuginosa)
Marigold, Beck's Water (Bidens beckii)
Marigold, Marsh (Caltha palustris)
Marigold, Water (Bidens beckii)
Marigold, Yellow Marsh (Caltha palustris)
Mayflower, Canada (Maianthemum canadense)
Mayflower, Creeping (Epigaea repens)
Meadow Beauty, Common (Rhexia virginica)
Meadow Parsnip, Golden (Zizia aurea)
Meadow Rue, Early (Thalictrum dioicum)
Medick, Black (Medicago lupulina)
Medick, Hop (Medicago lupulina)
Mermaid, False (Floerkea proserpinacoides)
Mermaid, Proserpinca-like (Floerkea proserpinacoides)
Mermaidweed, False (Floerkea proserpinacoides)
Mignonette, Wild (Reseda lutea)
Mignonette, Yellow (Reseda lutea)
Mignonette, Yellow Cut-leaved (Reseda lutea)
Mignonette, Yellow Upright (Reseda lutea)
Milkvetch, Canada (Astragalus canadensis)
Milkweed, Butterfly (Asclepias tuberosa)
Milkweed, Common (Asclepias syriaca)
Milkweed, Poke (Asclepias exaltata)
Milkweed, Purple (Asclepias purpurascens)
Milkweed, Swamp (Asclepias incarnata)
Milkweed, Whorled (Asclepias verticillata)
Milkwort, Fringed (Polygaloides paucifolia)
Mint, Arkansas (Clinopodium arkansanum)
Mint, Downy Wood (Blephilia ciliata)
Miterwort, Coolwort (Mitella diphylla)
Miterwort, Naked (Mitella nuda)
Mitrewort, False (Tiarella cordifolia)
Mitrewort, Heart-leaved False (Tiarella cordifolia)
Moccasin Flower, Pink (Cypripedium acaule)
Monkey Flower, Square-stemmed (Mimulus ringens)
Moonseed, Canada (Menispermum canadense)
Moonseed, Common (Menispermum canadense)
Mountain Avens, Entire-leaved (Dryas integrifolia)
Mountain Avens, White (Dryas integrifolia)
Mountain Mint, Hairy (Pycnanthemum verticillatum)
Mountain Mint, Virginia (Pycnanthemum virginianum)
Mouth, Dragon's (Arethusa bulbosa)
Mullein, Black (Verbascum nigrum)
Mullein, Common (Verbascum thapsus)
Mullein, Dark (Verbascum nigrum)
Mullein, Moth (Verbascum blattaria)
Mustard, Garlic (Alliaria petiolata)

Nightshade, Broadleaf Enchanter's (Circaea canadensis)
Nightshade, Broadleaved Enchanter's (Circaea canadensis)
Nightshade, Canada Enchanter's (Circaea canadensis)
Nightshade, Enchanter's (Circaea canadensis)
Nightshade, Yellowish Enchanter's (Circaea canadensis)

Oats, Wild (Uvularia sessilifolia)
Oats, Wild (Uvularia perfoliata)
Onion, Nodding (Allium cernuum)
Onion, Nodding Wild (Allium cernuum)
Orchid, Alaska (Platanthera unalascensis)
Orchid, Blunt Leaf Rein (Platanthera obtusata)
Orchid, Blunt-leaved (Platanthera obtusata)
Orchid, Bog (Platanthera dilatata)
Orchid, Bracted Green (Dactylorhiza viridis)
Orchid, Club Spur (Platanthera clavellata)
Orchid, Fen (Liparis loeselii)
Orchid, Frog (Dactylorhiza viridis)
Orchid, Hooker's (Platanthera hookeri)
Orchid, Large Round Leaf (Platanthera macrophylla)
Orchid, Large Round-Leaved (Platanthera macrophylla)
Orchid, Long-bracted Green (Dactylorhiza viridis)
Orchid, Northern Green (Platanthera hyperborea)
Orchid, One Leaf Rein (Platanthera obtusata)
Orchid, Prairie Fringed (Platanthera leucophaea)
Orchid, Prairie White Fringed (Platanthera leucophaea)
Orchid, Ragged Fringed (Platanthera lacera)
Orchid, Round Leaf (Platanthera orbiculata)
Orchid, Slender Spire (Platanthera unalascensis)
Orchid, Small Round-leaved (Galearis rotundifolia)
Orchid, Small Round-leaved (Platanthera orbiculata)
Orchid, Smaller Purple Fringed (Platanthera psycodes)
Orchid, Tall Northern Green (Platanthera hyperborea)
Orchid, Tall White Bog (Platanthera dilatata)
Orchid, White Bog (Platanthera dilatata)
Orchid, White Fringed (Platanthera blephariglottis)
Orchis, Alaska (Platanthera unalascensis)
Orchis, Alaska Rein (Platanthera unalascensis)
Orchis, Blunt-leaved (Platanthera obtusata)
Orchis, Fen (Liparis loeselii)
Orchis, Green Fringed (Platanthera lacera)
Orchis, Green Wood (Platanthera clavellata)
Orchis, Green Woodland (Platanthera clavellata)
Orchis, Hooker's (Platanthera hookeri)
Orchis, Hooker's Fringed (Platanthera hookeri)
Orchis, Large Round-Leaved (Platanthera macrophylla)
Orchis, Leafy White (Platanthera dilatata)
Orchis, Long-bracted (Dactylorhiza viridis)
Orchis, Northern Green (Platanthera hyperborea)
Orchis, One-leaf (Galearis rotundifolia)
Orchis, Prairie Fringed (Platanthera leucophaea)
Orchis, Prairie White Fringed (Platanthera leucophaea)
Orchis, Ragged Fringed (Platanthera lacera)
Orchis, Round-leaved (Galearis rotundifolia)
Orchis, Showy (Galearis spectabilis)
Orchis, Small Northern Bog (Platanthera obtusata)
Orchis, Small Purple Fringed (Platanthera psycodes)
Orchis, Small Round-leaved (Galearis rotundifolia)
Orchis, Smaller Purple Fringed (Platanthera psycodes)
Orchis, Tall Leafy Green (Platanthera hyperborea)
Orchis, Tall White Bog (Platanthera dilatata)
Orchis, White Bog (Platanthera dilatata)
Orchis, White Fringed (Platanthera blephariglottis)
Oxeye, Sweet (Heliopsis helianthoides)

Paintbrush, Scarlet Indian (Castilleja coccinea)
Painted Cup, Scarlet (Castilleja coccinea)
Pansy, Field (Viola bicolor)
Parilla, Yellow (Menispermum canadense)
Parosela, Purple (Dalea purpurea)
Parsley, Cow (Anthriscus sylvestris)
Parsley, Wild Beaked (Anthriscus sylvestris)
Parsnip, Fragrant Water (Sium suave)
Parsnip, Hemlock Water (Sium suave)
Parsnip, Water (Sium suave)
Partridgeberry, Creeping (Mitchella repens)
Pea, Beach (Lathyrus japonicus)
Pea, Seaside (Lathyrus japonicus)
Pea, Tuberous (Lathyrus tuberosus)
Peavine, Marsh (Lathyrus palustris)
Pennyroyal, Bastard (Trichostema dichotomum)
Pennyroyal, False (Trichostema brachiatum)
Pennyroyal, False (Trichostema dichotomum)
Penstemon, Digitalis (Penstemon digitalis)
Periwinkle, Common (Vinca minor)
Pickerelweed, Heart-leaved (Pontederia cordata)
Pickerelweed, Lance-leaved (Pontederia cordata)
Pigweed, Redroot (Amaranthus retroflexus)
Pilewort, Marsh (Ficaria verna)
Pimpernel, Water (Veronica anagallis-aquatica)
Pimpernel, Yellow (Taenidia integerrima)
Pinedrops, Andromedea-like (Pterospora andromedea)
Pinesap, Hairy (Hypopitys monotropa)
Pink, Wild (Arethusa bulbosa)
Pinweed, Hairy (Lechea mucronata)
Pinweed, Large (Lechea mucronata)
Pipsissewa, Common (Chimaphila umbellata)
Pipsissewa, Mottled (Chimaphila maculata)
Plantain, Robin's (Erigeron pulchellus)
Pogonia, Rose (Pogonia ophioglossoides)
Pokeweed, American (Phytolacca americana)
Polygala, Fringed (Polygaloides paucifolia)
Poppy, Celandine (Stylophorum diphyllum)
Poppy, Wood (Stylophorum diphyllum)
Prickly Pear, Spreading (Opuntia humifusa)
Primrose, Bird's-eye (Primula mistassinica)
Primrose, Dwarf Canadian (Primula mistassinica)
Prince's Pine, Striped (Chimaphila maculata)
Puccoon, Fringed (Lithospermum incisum)
Puccoon, Hairy (Lithospermum caroliniense)
Puccoon, Incised (Lithospermum incisum)
Puccoon, Linear-leaved (Lithospermum incisum)
Puccoon, Plains (Lithospermum caroliniense)
Purslane, Milk (Euphorbia maculata)
Pussytoes, Field (Antennaria neglecta)
Pussytoes, Parlin's (Antennaria parlinii)
Pussytoes, Plantain-leaved (Antennaria parlinii)
Pyrola, Green-flowered (Pyrola chlorantha)
Pyrola, Greenish-flowered (Pyrola chlorantha)
Pyrola, One-Flowered (Moneses uniflora)
Pyrola, One-sided (Orthilia secunda)
Pyrola, Shinleaf (Pyrola elliptica)

Ragwort, Platte (Packera plattensis)
Ragwort, Prairie (Packera plattensis)
Rattlesnake Plantain, Creeping (Goodyera repens)
Rattlesnake Plantain, Downy (Goodyera pubescens)
Rattlesnake Plantain, Dwarf (Goodyera repens)
Rattlesnake Plantain, Giant (Goodyera oblongifolia)
Rattlesnake Plantain, Green-leaved (Goodyera oblongifolia)
Rattlesnake Plantain, Lesser (Goodyera repens)
Rattlesnake Plantain, Menzie's (Goodyera oblongifolia)
Rattlesnake-root, White (Nabalus albus)
Rattlesnakeroot, Glaucous (Nabalus racemosus)
Rattlesnakeroot, Glaucous White (Nabalus racemosus)
Rattlesnakeroot, Tall (Nabalus altissimus)
Rattlesnakeroot, Tall (Nabalus trifoliolatus)
Rattlesnakeroot, Tall White (Nabalus altissimus)
Rattlesnakeroot, Three-leaved (Nabalus trifoliolatus)
Red-root, Herbaceous (Ceanothus herbaceus)
Rocket, Dame's (Hesperis matronalis)
Rocket, Yellow (Barbarea vulgaris)
Rosemary, Bog (Andromeda polifolia)
Rosinweed, Prairie (Silphium terebinthinaceum)
Rubberweed, Stemless (Tetraneuris herbacea)

Saltwort, Common (Salsola tragus)
Sandmat, Spotted (Euphorbia maculata)
Sandwort, Rock (Sabulina michauxii)
Sandwort, Thyme-leaved (Arenaria serpyllifolia)
Savory, Limestone (Clinopodium arkansanum)
Savory, Wild (Clinopodium arkansanum)
Saxifrage, American Golden (Chrysosplenium americanum)
Saxifrage, Early (Micranthes virginiensis)
Saxifrage, Golden (Chrysosplenium americanum)
Saxifrage, Virginia (Micranthes virginiensis)
Scheuchzeria, Marsh (Scheuchzeria palustris)
Senna, American (Senna hebecarpa)
Senna, Wild (Senna hebecarpa)
Shinleaf, One-sided (Orthilia secunda)
Silverweed, Common (Potentilla anserina)
Smartweed, Arrow-leaved (Persicaria sagittata)
Smartweed, Virginia (Persicaria virginiana)
Snakeroot, Seneca (Polygala senega)
Snapdragon, Dwarf (Chaenorrhinum minus)
Snapweed, Pale (Impatiens pallida)
Sneezeweed, Common (Helenium autumnale)
Snowberry, Creeping (Gaultheria hispidula)
Snowdrops, Common (Galanthus nivalis)
Snowdrops, Milky (Galanthus nivalis)
Snowflake, Summer (Ornithogalum umbellatum)
Solomon's Seal, False (Maianthemum racemosum)
Solomon's Seal, Great (Polygonatum canaliculatum)
Solomon's Seal, Hairy (Polygonatum pubescens)
Solomon's Seal, Star-flowered (Maianthemum stellatum)
Solomon's Seal, Star-flowered False (Maianthemum stellatum)
Sorrel, Common Wood (Oxalis montana)
Sorrel, True Wood (Oxalis montana)
Speedwell, Bird's-eye (Veronica chamaedrys)
Speedwell, Common (Veronica officinalis)
Speedwell, Creeping (Veronica filiformis)
Speedwell, Germander (Veronica chamaedrys)
Speedwell, Hairlike (Veronica filiformis)
Speedwell, Marsh (Veronica scutellata)
Speedwell, Persian (Veronica persica)
Speedwell, Skullcap (Veronica scutellata)
Speedwell, Slender (Veronica filiformis)
Speedwell, Thyme-leaved (Veronica serpyllifolia)
Speedwell, Water (Veronica anagallis-aquatica)
Spikenard, False (Maianthemum racemosum)
Spikenard, Wild (Maianthemum racemosum)
Spring Beauty, Carolina (Claytonia caroliniana)
Spring Beauty, Narrow-leaved (Claytonia virginica)
Spring Beauty, Virginia (Claytonia virginica)
Spring Beauty, Wide-leaved (Claytonia caroliniana)
Spurge, Blooming (Euphorbia corollata)
Spurge, Blotched (Euphorbia maculata)
Spurge, Cypress (Euphorbia cyparissias)
Spurge, Flowering (Euphorbia corollata)
Spurge, Spotted (Euphorbia maculata)
Star-grass, Mealy (Aletris farinosa)
Stargrass, Yellow (Hypoxis hirsuta)
Starwort, Hermaphrodite Water (Callitriche hermaphroditica)
Starwort, Narrow-leaf Water (Callitriche hermaphroditica)
Starwort, Northern Water (Callitriche hermaphroditica)
Starwort, Water (Callitriche hermaphroditica)
Stitchwort, Michauxii 's (Sabulina michauxii)
Stonecrop, Goldmoss (Sedum acre)
Stonecrop, Mossy (Sedum acre)
Strawberry, Appalachian Barren (Geum fragarioides)
Strawberry, Barren (Geum fragarioides)
Strawberry, Dry (Geum fragarioides)
Strawberry, Field (Fragaria virginiana)
Strawberry, Hedge (Fragaria vesca)
Strawberry, Indian (Potentilla indica)
Strawberry, Mock (Potentilla indica)
Strawberry, Scarlet (Fragaria virginiana)
Strawberry, Virginia (Fragaria virginiana)
Strawberry, Wild (Fragaria virginiana)
Strawberry, Wood (Fragaria vesca)
Strawberry, Woodland (Fragaria vesca)
Sundew, Linear-leaved (Drosera linearis)
Sundew, Round-leaved (Drosera rotundifolia)
Sundew, Roundleaf (Drosera rotundifolia)
Sundew, Slenderleaf (Drosera linearis)
Sundew, Spatulate-leaved (Drosera intermedia)
Sundew, Spoonleaf (Drosera intermedia)
Sunflower, False (Heliopsis helianthoides)
Sunflower, Giant (Helianthus giganteus)
Sunflower, Maximilian (Helianthus maximilianii)
Sunflower, Swamp (Helenium autumnale)
Sunflower, Tall (Helianthus giganteus)
Sunflower, Woodland (Helianthus divaricatus)
Swallowwort, Black (Cynanchum louiseae)
Swallowwort, European (Cynanchum rossicum)
Swallowwort, Pale (Cynanchum rossicum)
Swallowwort, Poison-rope (Cynanchum vincetoxicum)
Swallowwort, Russian (Cynanchum rossicum)
Swallowwort, White (Cynanchum vincetoxicum)
Sweetroot, Clayton's (Osmorhiza claytonii)
Sweetroot, Longstyle (Osmorhiza longistylis)

Tansy, Common (Tanacetum vulgare)
Tea, Narrow-leaved New Jersey (Ceanothus herbaceus)
Tea, Oswego (Monarda didyma)
Teaberry, Eastern (Gaultheria procumbens)
Tearthumb, Arrow-leaved (Persicaria sagittata)
Tearthumb, Halberd-leaved (Persicaria arifolia)
Teasel, Draper's (Dipsacus fullonum)
Teasel, Wild (Dipsacus fullonum)
Thistle, Bull (Cirsium vulgare)
Thistle, Canada (Cirsium arvense)
Thistle, Common Globe (Echinops sphaerocephalus)
Thistle, Creeping (Cirsium arvense)
Thistle, Field (Cirsium discolor)
Thistle, Globe (Echinops sphaerocephalus)
Thistle, Hill's (Cirsium pumilum)
Thistle, Musk (Carduus nutans)
Thistle, Nodding (Carduus nutans)
Thistle, Pitcher's (Cirsium pitcheri)
Thistle, Prickly Russian (Salsola tragus)
Thistle, Russian (Salsola tragus)
Thistle, Spear (Cirsium vulgare)
Thoroughwort, Perfoliate (Eupatorium perfoliatum)
Tick Trefoil, Canadian (Desmodium canadense)
Tick Trefoil, Showy (Desmodium canadense)
Tickseed, Tall (Coreopsis tripteris)
Toad-flax, Round-leaved (Kickxia spuria)
Toadflax, Dalmation (Linaria dalmatica)
Toadflax, Lesser (Chaenorrhinum minus)
Tobacco, Indian (Lobelia inflata)
Tobacco, Wild (Lobelia inflata)
Tofieldia, Sticky (Triantha glutinosa)
Touch-me-not, Pale (Impatiens pallida)
Trefoil, Birdsfoot (Lotus corniculatus)
Trefoil, Horned (Lotus corniculatus)
Triantha, Glutinous (Triantha glutinosa)
Trillium, Large-flowered (Trillium grandiflorum)
Trillium, Nodding (Trillium cernuum)
Trillium, Painted (Trillium undulatum)
Trillium, Purple (Trillium erectum)
Trillium, Red (Trillium erectum)
Trillium, White (Trillium grandiflorum)
Trillium, Yellow (Trillium luteum)
Turnip, Indian (Arisaema triphyllum)
Turtlehead, White (Chelone glabra)
Twayblade, Auricled (Neottia auriculata)
Twayblade, Bog (Liparis loeselii)
Twayblade, Common (Neottia ovata)
Twayblade, Eggleaf (Neottia ovata)
Twayblade, European Common (Neottia ovata)
Twayblade, Fen (Liparis loeselii)
Twayblade, Heart-leaved (Neottia cordata)
Twayblade, Heartleaf (Neottia cordata)
Twayblade, Loesel's (Liparis loeselii)
Twayblade, Oval-leaved (Neottia ovata)
Twayblade, Oval-leaved (Neottia cordata)
Twayblade, Purple (Liparis liliifolia)
Twinflower, Northern (Linnaea borealis)
Twisted Stalk, Rose (Streptopus lanceolatus)
Twisted Stalk, Sessile-leaved (Streptopus lanceolatus)

Vervain, Blue (Verbena hastata)
Vervain, False (Verbena hastata)
Vervain, Hoary (Verbena stricta)
Vervain, Mullein-leaved (Verbena stricta)
Vetchling, Cream-colored (Lathyrus ochroleucus)
Vetchling, Marsh (Lathyrus palustris)
Vetchling, Meadow (Lathyrus pratensis)
Vetchling, Pale (Lathyrus ochroleucus)
Vetchling, Tuberous (Lathyrus tuberosus)
Vetchling, Yellow (Lathyrus pratensis)
Vine, Black Dog Strangling (Cynanchum louiseae)
Vine, Dog Strangling (Cynanchum louiseae)
Vine, Dog Strangling (Cynanchum rossicum)
Vine, Dog Strangling (Cynanchum vincetoxicum)
Violet, Alpine (Viola labradorica)
Violet, American Dog (Viola conspersa)
Violet, Arrow-leaved (Viola sagittata)
Violet, Birdfoot (Viola pedata)
Violet, Birds-foot (Viola pedata)
Violet, Canada (Viola canadensis)
Violet, Common Blue (Viola papilionacea)
Violet, Common Blue (Viola sororia)
Violet, Cream (Viola striata)
Violet, Crowfoot (Viola pedata)
Violet, Dame's (Hesperis matronalis)
Violet, Dog (Viola conspersa)
Violet, Dogtooth (Erythronium americanum)
Violet, Downy Yellow (Viola pubescens)
Violet, Early Blue (Viola palmata)
Violet, Eastern Green (Hybanthus concolor)
Violet, Green (Hybanthus concolor)
Violet, Hairy (Viola pubescens)
Violet, Hairy Blue (Viola sororia)
Violet, Heath Dog (Viola adunca)
Violet, Hooked (Viola adunca)
Violet, Hooked-spur (Viola adunca)
Violet, Kidney-leaved (Viola renifolia)
Violet, Labrador (Viola labradorica)
Violet, Large-leaved White (Viola blanda)
Violet, Long-spurred (Viola rostrata)
Violet, Macloskey's (Viola macloskeyi)
Violet, Marsh Blue (Viola cucullata)
Violet, Northern Bog (Viola nephrophylla)
Violet, Northern White (Viola macloskeyi)
Violet, Pale (Viola striata)
Violet, Palmate (Viola palmata)
Violet, Round-leaved (Viola rotundifolia)
Violet, Sand (Viola adunca)
Violet, Smooth Yellow (Viola pubescens)
Violet, Striped (Viola striata)
Violet, Sweet White (Viola blanda)
Violet, White Dogtooth (Erythronium albidum)
Violet, Wood (Viola palmata)
Violet, Woolly Blue (Viola sororia)
Violet, Yellow (Viola rotundifolia)
Violet, Yellow (Viola pubescens)

Wake-robin, Ill-scented (Trillium erectum)
Wake-robin, Nodding (Trillium cernuum)
Wake-robin, Painted (Trillium undulatum)
Waterleaf, Broad-leaved (Hydrophyllum canadense)
Waterleaf, Canada (Hydrophyllum canadense)
Waterleaf, Virginia (Hydrophyllum virginianum)
Weed, Tinker's (Triosteum perfoliatum)
Whitlow Grass, Carolina (Draba reptans)
Whitlow Grass, Spring (Draba verna)
Wild Licorice, Spear (Galium latifolium)
Wild Licorice, Torrey's (Galium latifolium)
Willow Herb, River Beauty (Chamerion latifolium)
Willow Herb, Sweet Broad-leaved (Chamerion latifolium)
Willow, Water (Decodon verticillatus)
Wintergreen, Flowering (Polygaloides paucifolia)
Wintergreen, Greenish-flowered (Pyrola chlorantha)
Wintergreen, One-Flowered (Moneses uniflora)
Wintergreen, One-sided (Orthilia secunda)
Wintergreen, Sidebells (Orthilia secunda)
Wintergreen, Spotted (Moneses uniflora)
Wintergreen, Spotted (Chimaphila maculata)
Wintergreen, Striped (Chimaphila maculata)
Woodruff, Sweet (Galium odoratum)
Woodruff, Sweet White (Galium odoratum)

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