Index of Common Names

acid-water arrowhead — Sagittaria engelmanniana J. G. Small — 9 images
alder-leaved mountain-ash — Sorbus alnifolia (Siebold et Zucc.) K. Koch — 1 image
Allegheny blackberry, common blackberry — Rubus allegheniensis Porter — 22 images
Allegheny buttercup — Ranunculus allegheniensis Britton — 5 images
alsike clover — Trifolium hybridum L. — 4 images
American beech — Fagus grandifolia Ehrh. — 32 images
American bittersweet — Celastrus scandens L. — 8 images
American black currant — Ribes americanum P. Miller — 4 images
American black nightshade — Solanum ptycanthum Dun. — 8 images
American chestnut — Castanea dentata (Marsh.) Borkh. — 45 images
American cranberry, large cranberry — Vaccinium macrocarpon Ait. — 33 images
American dog violet — Viola conspersa Reichenb. — 11 images
American duckweed — Lemna valdiviana Phil. — 2 images
American elm, white elm — Ulmus americana L. — 19 images
American field mint — Mentha canadensis L. ( = arvensis var. villosa (Benth.) S.R. Stewart) — 6 images
American germander, saltmarsh germander — Teucrium canadense L. — 9 images
American hazelnut — Corylus americana Walt. — 22 images
American heal-all — Prunella vulgaris ssp. lanceolata (W. Barton) Hulten — 1 image
American holly — Ilex opaca Ait. — 29 images
American starflower — Trientalis borealis Raf. ( = Lysimachia borealis (Raf.) U Manns et A. Anderb.) — 10 images
American water-horehound — Lycopus americanus Muhl. ex W. Barton — 10 images
American white waterlily, fragrant waterlily — Nymphaea odorata Ait. — 19 images
American willow-herb — Epilobium ciliatum Raf. — 14 images
Amur corktree — Phellodendron amurense Rupr. — 21 images
Amur honeysuckle — Lonicera maackii (Rupr.) Maxim. — 18 images
Amur peppervine, porcelain berry — Ampelopsis brevipedunculata (Maxim.) Trautv. ( = heterophylla var. brevipedunculata C. L. Li) — 8 images
annual bluegrass — Poa annua L. — 6 images
annual glasswort — Salicornia maritima Wolff et Jefferies ( = europaea auct. non L.) — 24 images
annual honesty — Lunaria annua L. — 11 images
annual knawel — Scleranthus annuus L. — 8 images
annual ragweed — Ambrosia artemisiifolia L. — 14 images
annual saltmarsh aster — Aster subulatus Mischaux ( = Symphyotrichum subulatum (Michaux) Nesom) — 10 images
annual sow-thistle — Sonchus oleraceus L. — 7 images
annual umbrella-sedge — Fuirena pumila (Torrey) Sprengel — 29 images
Appalachian polypody — Polypodium appalachianum Haufler et Windham — 3 images
apple — Malus pumila P. Miller — 3 images
arbor vitae — Thuja occidentalis L. — 8 images
arrow-arum — Peltandra virginica (L.) Schott — 12 images
arrow-leaf tearthumb — Polygonum sagittatum L. ( = Persicaria sagittata (L.) H. Gross) — 15 images
arrow-leaf violet — Viola sagittata Aiton ( = fimbriatula J.I. Smith) — 28 images
ash willow — Salix cinerea L. — 36 images
Asiatic sweetleaf, sapphireberry — Symplocos paniculata (Thunb.) Miq. — 2 images
Atlantic Joe-Pye-weed — Eupatorium dubium Willd. ex Poiret ( = Eutrochium dubium (Willd. ex Poir.) E.E. Lamont) — 20 images
Atlantic white cedar — Chamaecyparis thyoides (L.) B.S.P. — 49 images
Austrian pine — Pinus nigra Arnold — 9 images
autumn-olive, oleaster — Elaeagnus umbellata Thunb. — 31 images
autumn willow — Salix serissima (Bailey) Fern. — 11 images
awned vernalgrass, Puel's vernalgrass — Anthoxanthum aristatum Boiss. — 3 images
awnless brome — Bromus inermis Leysser — 4 images
awnless woodland-muhly — Muhlenbergia sobolifera (Muhl. ex Willd.) Trin. — 1 image
ball mustard — Neslia paniculata (L.) Desv. — 1 image
balm-of-Gilead — Populus x jackii Sarg. ( = balsamifera x deltoides ) — 1 image
balsam fir — Abies balsamea (L.) P. Miller — 22 images
balsam poplar — Populus balsamifera L. — 5 images
barnyard grass — Echinochloa crus-galli (L.) Beauv. — 11 images
barren brome — Bromus sterilis L. — 2 images
barren oak — Quercus marilandica Muench. — 1 image
basket willow — Salix purpurea L. — 4 images
basswood, American linden — Tilia americana L. — 18 images
bastard toadflax — Comandra umbellata (L.) Nutt. — 19 images
bayberry — Myrica pensylvanica Loisel. ( = Morella pensylvanica (Mirbel) Kartesz) — 27 images
bay forget-me-not — Myosotis laxa Lehm. — 5 images
bayonet rush — Juncus militaris Bigelow — 32 images
beach bean — Strophostyles helvola (L.) Ell. — 7 images
beach pea — Lathyrus japonicus var. maritimus (L.) Kartesz et Gandhi — 14 images
beach pinweed — Lechea maritima Leggett ex B.S.P. — 64 images
beach plum — Prunus maritima Marsh. — 39 images
beaded broom-sedge or necklace broom-sedge — Carex projecta Mackenzie — 1 image
beaked hazelnut — Corylus cornuta Marsh. — 16 images
Bebb's willow — Salix bebbiana Sarg. — 27 images
beech-drops — Epifagus virginiana (L.) W.P.C. Barton — 12 images
beggar-ticks — Bidens frondosa L. — 13 images
big bluestem — Andropogon gerardii Vitman — 6 images
big cordgrass — Spartina cynosuroides (L.) Roth — 5 images
big-headed horned sedge — Rhynchospora macrostachya Torrey ex A. Gray — 28 images
big-leaved pondweed — Potamogeton amplifolius Tuckerman — 3 images
big star sedge — Carex rosea Schkuhr. ex Willd. — 2 images
bigtooth aspen — Populus grandidentata Michaux — 29 images
big water-smartweed, coarse smartweed — Polygonum robustius (Small) Fern. ( = robustior (Small) Bicknell, punctatum var. majus (Meisner) Fassett) — 7 images
birdfoot-trefoil — Lotus corniculatus L. — 4 images
birdseye speedwell — Veronica chamaedrys L. — 2 images
birdsfoot violet — Viola pedata L. — 26 images
bird vetch — Vicia cracca L. — 13 images
bitternut hickory, swamp hickory — Carya cordiformis (Wangenh.) K. Koch — 22 images
black ash — Fraxinus nigra Marshall — 20 images
black bulrush — Scirpus atrovirens var. georgianus (Harper) Fern. ( = georgianus Harper) — 5 images
black cherry — Prunus serotina Ehrh. — 48 images
black chokeberry — Aronia melanocarpa (Michx.) Ell. ( = Photinia melanocarpa (Michaux) Robertson et Phipps) — 27 images
black-eyed Susan — Rudbeckia hirta var. pulcherrima Farw. — 8 images
black-fruited spike-rush — Eleocharis melanocarpa Torrey — 36 images
black-girdled woolsedge, dusky woolgrass — Scirpus atrocinctus Fern. — 1 image
black highbush blueberry — Vaccinium fuscatum Ait. ( = atrococcum (Gray) Heller) — 7 images
black huckleberry — Gaylussacia baccata (Wangenh.) K. Koch — 26 images
black locust — Robinia pseudoacacia L. — 22 images
black medick — Medicago lupulina L. — 5 images
black nightshade — Solanum nigrum L. — 4 images
black oak — Quercus velutina Lam. — 29 images
black oatgrass — Piptochaetium avenaceum (L.) Parodi ( = Stipa avenacea L.) — 18 images
black raspberry — Rubus occidentalis L. — 12 images
black snakeroot — Sanicula marilandica L. — 3 images
black spruce — Picea mariana (P. Miller) B.S.P. — 24 images
black swallow-wort — Cynanchum louiseae Kartez et Ghandi ( = nigrum (L.) Pers.) — 19 images
black walnut — Juglans nigra L. — 9 images
black willow — Salix nigra Marsh. — 38 images
bladder-campion — Silene vulgaris (Moench) Garcke ( = cucubalus Wibel) — 6 images
bladder-sedge or swamp sedge — Carex intumescens Rudge — 10 images
bladder senna — Colutea arborescens L. — 3 images
blanket flower — Gaillardia x grandiflora (G. aristata x G. pulchella) — 1 image
bloodroot — Sanguinaria canadensis L. — 18 images
bluebead-lily — Clintonia borealis (Aiton) Ref. — 15 images
blue cohosh — Caulophyllum thalictroides (L.) Michaux — 4 images
blue heart-leaf aster — Aster cordifolius Michaux ( = Symphyotrichum cordifolium G.L.Nesom 1994) — 9 images
blue huckleberry, dangleberry — Gaylussacia frondosa (L.) Torr. et Gray ex Torr. — 19 images
blue scorpion-grass — Myosotis stricta Link ex Roemer et J.A. Schultes — 4 images
blue toadflax, old-field toadflax — Nuttallanthus canadensis (L.) D.A. Sutton ( = Linaria canadensis (L.) Chaz.) — 29 images
bluets — Houstonia caerulea L. ( = Hedeyotis caerulea (L.) Hooker) — 25 images
blue vervain, common vervain — Verbena hastata L. — 18 images
blunt-leaved bedstraw or large marsh bedstraw — Galium obtusum Bigelow — 4 images
blunt-lobed liverleaf — Hepatica nobilis var. obtusa (Pursh) Steyermark ( = Anemone americana (DC.) H. Hara) — 17 images
bogbeans — Menyanthes trifoliata L. — 7 images
bog huckleberry — Gaylussacia dumosa var. bigelowiana Fern. ( = bigelowiana (Fern.) Sorrie et Weakley) — 4 images
bog laurel — Kalmia polifolia Wangenh. — 2 images
bog rosemary — Andromeda polifolia var. glaucophylla (Link) DC. — 3 images
bog white violet, lance-leaf violet — Viola lanceolata L. — 25 images
bog willow — Salix pedicellaris Pursh — 24 images
Bohemian knotweed — Polygonum x bohemicum ( = Fallopia x bohemica (Chrtek et Chrtkova) J.P. Balley, P. cuspidatum x P. sachalinense ) — 13 images
boneset, thoroughwort — Eupatorium perfoliatum L. — 26 images
Boston ivy — Parthenocissus tricuspidata (Zieb. et Zucc.) Planchon — 7 images
bottlebrush grass — Hystrix patula Moench ( = Elymus hystrix L.) — 8 images
bottle sedge — Carex utriculata Boott ( = rostrata var. utriculata (Boott) Bailey) — 11 images
bouncing bet, soapwort — Saponaria officinalis L. — 6 images
boxelder — Acer negundo L. — 6 images
boxelder — Acer negundo var. violaceum (Kirsch.) Jaeg. — 18 images
bracken fern — Pteridium aquilinum (L.) Kuhn — 16 images
bracted plantain — Plantago aristata Michaux — 12 images
branching centaury — Centaurium pulchellum (Sw.) Druce — 4 images
Brazilian waterweed, Brazilian elodea — Egeria densa Planchon — 4 images
bristly aster, swamp aster — Aster puniceus L. ( = Symphyotrichum puniceum A. et D. Löve 1982) — 6 images
bristly blackberry, bog blackberry — Rubus setosus Bigelow — 5 images
bristly dewberry, swamp dewberry — Rubus hispidus L. — 25 images
bristly foxtail — Setaria parviflora (Poiret) Kerguelen — 7 images
bristly locust — Robinia hispida L. — 9 images
bristly sarsaparilla — Aralia hispida Vent. — 19 images
bristly sedge — Carex comosa Boott — 11 images
broad beech fern — Phegopteris hexagonoptera (Michaux) Fée — 5 images
broad-leaved cattail — Typha latifolia L. — 16 images
broad-leaved panic-grass — Dichanthelium latifolium (L.) Gould et Glark — 7 images
broad-leaved peppergrass — Lepidium latifolium L. — 8 images
broad-leaved ragwort — Senecio obovatus Muhl. ex Willd. ( = Packera obovata (Muhl. ex Willd.) W.A. Weber et A. Love) — 7 images
broad-leaved spring-beauty — Claytonia caroliniana Michx. — 4 images
broad-leaved woodland sedge — Carex platyphylla Carey — 2 images
brome-like sedge — Carex bromoides Schkuhr. ex Willd. — 6 images
broom-crowberry — Corema conradii (Torrey) Torrey ex Loudon — 38 images
broom sedge — Carex scoparia Schkuhr. ex Willd. — 15 images
broom-sedge — Andropogon virginicus L. — 5 images
brown beak-rush — Rhynchospora capitellata (Michx.) Vahl. — 26 images
brown knapweed — Centaurea jacea L. — 12 images
bulblet water-hemlock — Cicuta bulbifera L. — 12 images
bulbous bittercress, spring cress — Cardamine bulbosa (Schreb. ex Muhl.) B.S.P. — 7 images
bulbous bluegrass — Poa bulbosa L. — 4 images
bull thistle — Cirsium vulgare (Savi) Ten. — 23 images
bunchberry, dwarf cornel — Cornus canadensis L. ( = Chamaepericlymenum canadense (L.) Aschers. et Graebn.) — 8 images
bunched broom-sedge — Andropogon glomeratus (Walter) B.S.P. ( = virginicus var. abbreviatus (Hackel) Fern. et Grisc.) — 8 images
bush-honeysuckle — Diervilla lonicera L. — 13 images
butter-and-eggs — Linaria vulgaris P. Miller — 7 images
Butterbur — Petasites hybridus (L.) Gaertner, B. Meyer et Scherb. — 1 image
butterfly bush, summer lilac — Buddleja davidii Franch. — 19 images
butterfly milkweed — Asclepias tuberosa L. — 15 images
butternut — Juglans cinerea L. — 10 images
buttonweed — Diodia teres Walter — 12 images
calico aster — Aster lateriflorus (L.) Britton ( = Symphyotrichum lateriflorum (L.) A. et D. Löve 1982) — 5 images
California privet — Ligustrum ovalifolium Hassk. — 2 images
Canada anemone — Anemone canadensis L. — 2 images
Canada bluejoint — Calamagrostis canadensis (Michaux) Beauv. — 31 images
Canada goldenrod — Solidago canadensis L. — 6 images
Canada lily, wild yellow lily — Lilium canadense L. — 17 images
Canada mayflower — Maianthemum canadense Desf. — 9 images
Canada thistle — Cirsium arvense (L.) Scop. — 7 images
Canada yew — Taxus canadensis Marsh. — 19 images
Canadian St. John's-wort — Hypericum canadense L. — 12 images
Canadian wild ginger — Asarum canadense L. — 7 images
cardinalflower — Lobelia cardinalis L. — 18 images
Carey's smartweed — Polygonum careyi Olney ( = Persicaria careyi (Olney) Greene) — 21 images
Carolina fanwort — Cabomba caroliniana A. Gray — 33 images
Carolina rose, pasture rose — Rosa carolina L. — 6 images
Carolina silverbell — Halesia carolina L. — 5 images
carpetweed — Mollugo verticillata L. — 13 images
carrion-flower — Smilax herbacea L. — 8 images
castor aralia — Kalopanax septemlobus Koidzumi ( = K. pictus (Thunb.) Nakai) — 11 images
catberry — Nemopanthus mucronatus (L.) Loes. ( = Ilex mucronata (L.) M. Powell, Savol. et S. Andrews) — 35 images
catbrier, bullbrier — Smilax rotundifolia L. — 24 images
catnip — Nepeta cataria L. — 1 image
cattail — Typha sp. — 2 images
celandine — Chelidonium majus L. — 3 images
Chapman's bluegrass — Poa chapmaniana Scribner — 4 images
checkered rattlesnake-plantain — Goodyera tesselata Lodd. — 18 images
cheeses — Malva neglecta Wallr. — 5 images
chervil — Anthriscus sylvestris (L.) Hoffmann — 5 images
chestnut oak — Quercus prinus L. — 22 images
chicory — Cichorium intybus L. — 7 images
Chinese bush-clover — Lespedeza cuneata (Dum.-Cours.) G.Don — 15 images
Chinese corktree — Phellodendron chinense Schneider — 2 images
Chinese lantern plant — Physalis alkekengi L. — 5 images
Chinese smartweed — Polygonum cespitosum var. longisetum (deBruyn) A.N. Steward — 15 images
Chinese wisteria — Wisteria sinensis (Sims) DC. — 6 images
chokecherry — Prunus virginiana L. — 24 images
Christmas fern — Polystichum acrostichoides (Michaux) Schott — 15 images
cinnamon fern — Osmunda cinnamomea L. — 21 images
clasping aster, skydrops — Aster patens Ait. ( = Symphyotrichum patens (Ait.) Nesom 1994) — 12 images
clasping hartleaf aster — Aster undulatus L. ( = Symphyotrichum undulatum (L.) Nesom 1994) — 10 images
clasping milkweed — Asclepias amplexicaulis Sm. — 9 images
Clayton's bedstraw — Galium tinctorium (L.) Scop. — 21 images
clearweed, richweed — Pilea pumila (L.) A. Gray — 12 images
cleavers — Galium aparine L. — 9 images
cleft hempnettle — Galeopsis bifida Boenn. — 5 images
climbing false buckwheat — Polygonum scandens L. ( = Fallopia scandens (L.) Holub) — 18 images
climbing hempvine — Mikania scandens (L.) Willd. — 16 images
climbing nightshade, bittersweet nightshade — Solanum dulcamara L. — 13 images
Clinton's wood fern — Dryopteris clintoniana (D.C. Eaton ex A. Gray) Dowell — 1 image
cluster-leaved tick-trefoil — Desmodium glutinosum (Muhl. ex Willd.) Wood ( = Hylodesmum glutinosum (Mull. ex Willd.) H.Ohashi et R.R. Mill) — 5 images
coastal mannagrass — Glyceria obtusa (Muhl.) Trin. — 12 images
coastal sandbur — Cenchrus spinifex Cav. ( = parviflorus Benth.) — 9 images
coast-blite, red goosefoot — Chenopodium rubrum L. — 14 images
cocklebur, clotbur — Xanthium echinatum Murray ( = strumarium var. canadense (P.Miller) Torrey et Gray) — 14 images
coltsfoot — Tussilago farfara L. — 27 images
common agrimony, woodland agrimony — Agrimonia gryposepala Wallr. — 5 images
common arrowhead — Sagittaria latifolia Willd. — 17 images
common barberry — Berberis vulgaris L. — 15 images
common bittercress — Cardamine pensylvanica — 5 images
common bladderwort, great bladderwort — Utricularia vulgaris L. ( = macrorhiza Le Conte) — 10 images
common blue violet — Viola sororia Willd. ( = papilionacea Pursh) — 26 images
common buckthorn — Rhamnus cathartica L. — 14 images
common bugle — Ajuga reptans — 4 images
common bulrush — Scirpus cyperinus (L.) Kunth — 21 images
common bur-reed — Sparganium americanum Nutt. — 22 images
common buttonbush — Cephalanthus occidentalis L. — 15 images
common chickweed — Stellaria media (L.) Vill. — 17 images
common cinquefoil — Potentilla simplex Michaux — 5 images
common dandelion — Taraxacum officinale G.H. Weber ex Wiggers — 7 images
common elderberry — Sambucus canadensis L. — 17 images
common evening primrose — Oenothera biennis L. — 28 images
common flax — Linum usitatissimum L. — 8 images
common groundsel — Senecio vulgaris L. — 5 images
common hackberry — Celtis occidentalis L. — 24 images
common hairgrass — Deschampsia flexuosa (L.) Trin. — 8 images
common hop — Humulus lupulus L. — 4 images
common hoptree, stinking ash — Ptelea trifoliata L. — 4 images
common juniper, pasture juniper — Juniperus communis var. depressa Pursh — 26 images
common lime — Tilia x vulgaris Hayne ( = cordata x platyphyllos ) — 2 images
common marsh bedstraw — Galium palustre L. — 4 images
common milkweed — Asclepias syriaca L. — 24 images
common mouse-ear chickweed — Cerastium vulgatum L. ( = fontanum ssp. vulgare (Hartman) Greuter et Burdet) — 14 images
common mullein — Verbascum thapsus L. — 20 images
common pepperweed — Lepidium densiflorum Schrader — 1 image
common plantain, white man's foot — Plantago major L. — 8 images
common purslane — Portulaca oleracea L. — 10 images
common reed — Phragmites australis (Cav.) Trin. ex Steudel — 29 images
common rush — Juncus effusus L. — 8 images
common sand-spurrey — Spergularia rubra (L.) J. et K. Presl — 10 images
common sedge — Carex communis Bailey — 8 images
common serviceberry, smooth shadbush — Amelanchier arborea (Michaux f.) Fern. — 16 images
common speedwell — Veronica officinalis L. — 8 images
common St. John's-wort — Hypericum perforatum L. — 9 images
common sunflower, mirasol — Helianthus annuus L. — 3 images
common tansy — Tanacetum vulgare L. — 14 images
common teasel — Dipsacus fullonum L. — 4 images
common threesquare — Scirpus pungens Vahl. ( = americanus auct. non Pers.) — 7 images
common viper's bugloss, blue weed — Echium vulgare L. — 3 images
common winterberry — Ilex verticillata (L.) Gray — 27 images
common woodreed — Cinna arundinacea L. — 2 images
common wood-rush — Luzula multiflora (Retz.) Lej. — 15 images
common wormwood, mugwort — Artemisia vulgaris L. — 13 images
common yellow wood-sorrel — Oxalis stricta L. ( = europaea Jordan) — 11 images
Cooper's hardy iceplant, trailing iceplant — Delosperma cooperi (Hook. f.) L. Bolus ( = Mesembryanthemum cooperi Hook. f.) — 17 images
corn speedwell — Veronica arvensis L. — 13 images
cow parsnip — Heracleum maximum Bartram ( = lanatum Michaux) — 31 images
cow-wheat — Melampyrum lineare Desr. — 9 images
creeping buttercup — Ranunculus repens L. — 11 images
creeping jenny, moneywort — Lysimachia nummularia L. — 4 images
creeping snowberry — Gaultheria hispidula (L.) Muhl. ex Bigelow ( = Chiogenes hispidula (L.) Torrey and A. Gray) — 2 images
creeping sorrel — Oxalis corniculata L. ( = repens Thunberg) — 9 images
creeping spike-rush — Eleocharis palustris (L.) Roem. et Schultes — 7 images
crested wood fern — Dryopteris cristata (L.) A. Gray — 12 images
Cretian viper's bugloss — Echium creticum L. ( = Echium australe Lam.) — 8 images
crinkleroot — Cardamine diphylla (Michaux) Wood ( = Dentaria diphylla Michaux) — 6 images
crispy or curly pondweed — Potamogeton crispus L. — 1 image
cross-leaved milkwort — Polygala cruciata L. — 18 images
crowfoot, bulbous buttercup — Ranunculus bulbosus L. — 12 images
crown-vetch — Coronilla varia L. — 2 images
cuckoo-flower — Cardamine pratensis L. — 14 images
cultivar 'Viking' — Aronia mitschurinii Skvorts. ( = melanocarpa x Sorbus aucuparia ) — 3 images
curly dock — Rumex crispus L. — 21 images
cut-leaved grape-fern — Botrychium dissectum Sprengel — 4 images
cut-leaved mermaid-weed — Proserpinaca pectinata Lam. — 3 images
cypress spurge — Euphorbia cyparissias L. — 10 images
dame's rocket — Hesperis matronalis L. — 13 images
dayflower — Commelina communis L. — 3 images
debtford pink — Dianthus armeria L. — 4 images
deerberry — Vaccinium stamineum L. — 6 images
deer-tongue — Dichanthelium clandestinum (L.) Gould ( = Panicum clandestinum L.) — 7 images
depauperatepanic-grass — Dichanthelium depauperatum (Muhl.) Gould — 3 images
dewdrop crane's bill — Geranium thunbergii Sieb. et Zucc. ex Lindl. et Paxton ( = Geranium ibericum Cav.) — 11 images
ditch stonecrop — Penthorum sedoides L. — 7 images
dodder — Cuscuta gronovii Willd. ex J.A. Schultes — 16 images
dog-hobble, drooping fetterbush — Leucothoe fontanesiana (Steudel) Sleumer — 5 images
doll's eyes, white baneberry — Actaea pachypoda Ell. — 12 images
doorweed — Polygonum aviculare L. ( = arenastrum Jordan ex Boreau) — 12 images
dotted smartweed — Polygonum punctatum Ell. ( = Persicaria punctata (Ell.) Small) — 19 images
Douglas fir — Pseudotsuga menziesii E. Murray — 20 images
downy false foxglove — Aureolaria virginica (L.) Pernnell ( = Gerardia virginica (L.) B.S.P.) — 6 images
downy goldenrod — Solidago puberula Nutt. — 11 images
downy hawthorn — Crataegus submollis Sarg. ( = arnoldiana Sarg., pennsylvanica Ashe, champlainensis Sarg., mollis Scheele) — 2 images
downy rattlesnake-plantain — Goodyera pubescens (Willd.) R. Br. — 12 images
downy swamp milkweed — Asclepias incarnata ssp. pulchra (Ehrh. ex Willd.) Woodson — 23 images
downy yellow violet — Viola pubescens Aiton — 4 images
dragon's mouth — Arethusa bulbosa L. — 7 images
drooping brome, downy chess — Bromus tectorum L. — 8 images
duckweed — Lemna minor L. — 4 images
dune grass — Ammophila breviligulata Fern. — 18 images
dustymiller, beach wormwood — Artemisia stelleriana Bess. — 18 images
Dutchman's breeches — Dicentra cucullaria (L.) Bernh. — 7 images
dwarf chestnut oak — Quercus prinoides Willd. — 42 images
dwarf cinquefoil — Potentilla canadensis L. — 13 images
dwarf dandelion — Krigia virginica (L.) Willd. — 26 images
dwarf ginseng — Panax trifolius L. — 14 images
dwarf glasswort — Salicornia bigelovii Torrey — 7 images
dwarf Japanese knotweed — Polygonum cuspidatum var. compactum (Hook. f.) L.H. Bailey ( = compactum J. D. Hooker) — 5 images
dwarf upland willow — Salix tristis Ait. ( = humilis var. microphylla (Anderss.) Fern., occidentalis Walter) — 51 images
dyer's greenwed — Genista tinctoria L. — 2 images
early azalea — Rhododendron prinophyllum (Small) Millais ( = roseum (Loisel.) Rehder) — 7 images
early goldenrod — Solidago juncea Aiton — 9 images
early meadow-rue — Thalictrum dioicum L. — 14 images
eastern blue-eyed-grass — Sisyrinchium atlanticum Bicknell — 2 images
eastern cottonwood — Populus deltoides Bartram ex Marsh. — 14 images
eastern daisy fleabane — Erigeron annuus (L.) Pers. — 7 images
eastern hemlock — Tsuga canadensis (L.) Carr. — 33 images
eastern hop-hornbeam — Ostrya virginiana (P. Mill.) K. Koch — 21 images
eastern red cedar — Juniperus virginiana L. — 65 images
eastern willow-herb, purple-leaved willow-herb — Epilobium coloratum Biehler — 3 images
ebony spleenwort — Asplenium platyneuron (L.) B.S.P. — 12 images
Elliott's goldenrod — Solidago latissimifolia P. Miller — 10 images
elliptic shinleaf — Pyrola elliptica Nutt. — 10 images
Emmons' sedge — Carex albicans var. emmonsii J. Rettig ( = emmonsii Dewey ex Torrey) — 3 images
enchanter's nightshade — Circaea luteniana ssp. canadensis (L.) Aschers. et Magnus ( = quadrisulcata var. candensis (L.) Hara) — 9 images
English elm — Ulmus procera Salisb. — 2 images
English ivy — Hedera helix L. — 6 images
English oak — Quercus robur L. — 11 images
erect sea-blite — Suaeda linearis (Ell.) Moq. — 12 images
erect water smartweed — Polygonum amphibium var. emersum Michaux. ( = P. coccineum Muhl., Persicaria amphibia (L.) Gray) — 15 images
Eurasian heal-all — Prunella vulgaris ssp. vulgaris L. — 7 images
European alder — Alnus glutinosa (L.) Gaertner — 3 images
European beech — Fagus sylvatica L. — 6 images
European clotbur, European cocklebur — Xanthium strumarium L. — 1 image
European highbush cranberry, guelder-rose — Viburnum opulus L. — 4 images
European larch — Larix decidua P. Miller — 10 images
European mountain-ash — Sorbus aucuparia L. — 6 images
European spindletree — Euonymus europaea L. — 10 images
European water horehound — Lycopus europaeus L. — 1 image
evergreen blackberry — Rubus laciniatus Willd. — 13 images
fall dandelion — Leontodon autumnalis L. ( = Scorzoneroides autumnalis (L.) Moench) — 3 images
fall panic-grass — Panicum dichotomiflorum Michaux — 16 images
false buckwheat, black bindweed — Polygonum convolvulus L. ( = Fallopia convolvulus (L.) A. Love) — 1 image
false hellebore — Veratrum viride Aiton — 14 images
false nettle, bog-hemp — Boehmeria cylindrica (L.) Sw. — 8 images
false pimpernel — Lindernia dubia (L.) Pennell — 11 images
false shagbark hickory — Carya ovalis (Wangenh.) Sarg. — 8 images
false Solomon's seal — Smilacina racemosa (L.) Desf. ( = Maianthemum racemosum (L.) Link) — 9 images
false water-pepper — Polygonum hydropiperoides Michaux ( = Persicaria hydropiperoides (Michaux) Small) — 12 images
fascicled panic-grass — Dichanthelium acuminatum var. fasciculatum (Torrey) Freckmann ( = Panicum lanuginosum Ell.) — 18 images
featherfoil — Hottonia inflata Ell. — 7 images
feathertop, bushgrass — Calamagrostis epigeios (L.) Roth — 10 images
fernleaf yellow false foxglove — Aureolaria pedicularia (L.) Raf. ( = Gerardia pedicularia L.) — 25 images
field chickweed — Cerastium arvense L. — 2 images
field-cress, cow-cress — Lepidium campestre (L.) Aiton f. — 7 images
field garlic — Allium vineale L. — 7 images
field horsetail, common horsetail — Equisetum arvense L. — 21 images
field pennycress — Thlaspi arvense L. — 15 images
field sow-thistle — Sonchus arvensis L. — 10 images
field stitchwort — Stellaria graminea L. — 7 images
fireweed, pilewort — Erechtites hieracifolius (L.) Raf. ex DC. — 23 images
five-leaved akebia — Akebia quinata (Houtt.) Dcne. — 13 images
five-leaved aralia — Eleutherococcus pentaphyllus (Sieb. et Zucc.) Nakai ( = Aralia pentaphylla Sieb. et Zucc.) — 4 images
flameleaf sumac, winged sumac — Rhus copallina L. — 20 images
flat pea — Lathyrus sylvestris L. — 2 images
flat-stemed bluegrass — Poa compressa L. — 10 images
flat-stemmed panic-grass — Panicum rigidulum Bosc ex Nees ( = Coleataenia longifolia ssp. rigidula (Bosc ex Nees) Soreng) — 12 images
flat-topped goldenrod — Euthamia graminifolia (L.) Nutt. ( = Solidago graminifolia (L.) Salisb.) — 7 images
floating heart — Nymphoides cordata (Ell.) Fern. — 15 images
flowering dogwood — Cornus florida L. ( = Benthamidia florida (L.) Spach) — 26 images
foamflower — Tiarella cordifolia L. — 11 images
fool's parsley — Aethusa cynapium L. — 5 images
forked bluecurls — Trichostema dichotomum L. — 22 images
forked panic-grass — Dichanthelium dichotomum (L.) Gould ( = Panicum dichotomum L.) — 6 images
four-leaved milkweed — Asclepias quadrifolia Jacq. — 3 images
four-o'clock — Mirabilis nyctaginea (Michaux) MacMillan — 10 images
four-seed vetch — Vicia tetrasperma (L.) Schreber — 6 images
fowlmeadow grass — Glyceria striata (Lam.) A. S. Hitche — 5 images
fowl-meadow grass — Poa palustris L. — 6 images
fox grape — Vitis labrusca L. — 23 images
fox sedge — Carex vulpinoidea Michaux ( = setacea Dewey) — 10 images
fragile fern — Cystopteris fragilis (L.) Bernh. — 11 images
freshwater or prairie cordgrass — Spartina pectinata Link — 17 images
fringed gentian — Gentianopsis crinita (Froel.) Y.C. Ma ( = Gentiana crinita Froel.) — 5 images
fringed loosestrife — Lysimachia ciliata L. — 3 images
fringed polygala, flowering wintergreen — Polygala paucifolia Willd. — 6 images
fringed sedge — Carex crinita Lam. — 7 images
fumitory — Fumaria officinalis L. — 5 images
garden asparagus — Asparagus officinalis L. — 11 images
garden burnet — Sanguisorba minor ssp. muricata (Spach) Nordb. — 4 images
garden columbine, European columbine — Aquilegia vulgaris L. — 3 images
garden lupine, Washington lupine — Lupinus polyphyllus Lindley — 9 images
garden red currant — Ribes rubrum L. — 2 images
garden strawberry — Fragaria x ananasa Duchesne ( = chiloensis x F. virginiana ) — 3 images
garden violet — Viola tricolor L. — 2 images
garlic — Allium sativum L. — 3 images
garlic mustard — Alliaria petiolata (Bieb.) Cavara et Grande ( = officinalis Andrz.) — 12 images
giant bur-reed — Sparganium eurycarpum Engelm. ex A. Gray — 10 images
giant foxtail — Setaria faberi Herrm. ex Rosen — 10 images
giant Solomon seal — Polygonatum biflorum (Walter) Ell. — 4 images
globose water-meal — Wolffia columbiana Karsten — 6 images
glory-of-the-snow — Chionodoxa luciliae Boiss. — 4 images
glossy buckthorn — Rhamnus frangula L. ( = Frangula alnus P. Miller) — 23 images
goat's rue — Tephrosia virginiana (L.) Pers. — 12 images
golden clover, palmate clover — Trifolium agrarium L. ( = aureum Pollich) — 8 images
golden hedge-hyssop — Gratiola aurea Pursh — 29 images
golden ragwort — Senecio aureus L. ( = Packera aurea (L.) A. et D. Love) — 11 images
golden saxifrage, water-carpet — Chrysosplenium americanum Schwein. ex Hooker — 17 images
golden zizia — Zizia aurea (L.) Koch — 5 images
goldmoss stonecrop — Sedum acre L. — 6 images
gooseneck loosestrife — Lysimachia clethroides Duby in DC. — 1 image
goutweed — Aegopodium podagraria L. — 11 images
grass-leaf arrowhead — Sagittaria graminea Michaux — 6 images
grassleaf pondweed — Potamogeton gramineus L. — 4 images
grass-leaf rush — Juncus marginatus Rostk. — 7 images
grass-pink — Calopogon tuberosus (L.) B.S.P. — 8 images
Gray's flatsedge — Cyperus grayi Torr. — 16 images
gray birch — Betula populifolia Marsh. — 24 images
gray dogwood — Cornus racemosa Lam. ( = Swida racemosa (Lam.) Moldenke) — 8 images
gray goldenrod — Solidago nemoralis Ait. — 13 images
great blue lobelia — Lobelia siphilitica L. — 2 images
great burdock — Arctium lappa L. — 8 images
greater bittercress — Cardamine flexuosa With. — 34 images
greater duckweed — Spirodela polyrhiza (L.) Schleiden — 3 images
great laurel, rosebay — Rhododendron maximum L. — 27 images
great leopard's bane — Doronicum pardalianches L. — 6 images
great water dock — Rumex orbiculatus A. Gray ( = britannica L.) — 12 images
great willow-herb — Epilobium angustifolium L. ( = Chamerion angustifolium (L.) Holub) — 4 images
green ash — Fraxinus pennsylvanica Marsh. — 19 images
green bean — Phaseolus vulgaris L. — 5 images
Greene's pussytoes — Antennaria neodioica Greene ( = howellii ssp. neodioica (Greene) Bayer) — 10 images
Greene's rush — Juncus greenei Oakes et Tuckerman — 13 images
green-flowered shinleaf — Pyrola chlorantha Sw. ( = virens Schreb.) — 4 images
green foxtail — Setaria viridis (L.) Beauv. — 2 images
green-fruited bur-reed — Sparganium erectum L. ( = chlorocarpum Rydb.) — 3 images
green woodland orchis — Platanthera clavellata (Michaux) Luer ( = Habenaria clavellata (Michaux) Sprengel) — 11 images
Gronovius' hawkweed — Hieracium gronovii L. — 16 images
ground-ivy — Glechoma hederacea L. — 8 images
groundnut — Apios americana Medik. — 8 images
grove sandwort — Moehringia lateriflora (L.) Fenzl ( = Arenaria lateriflora L.) — 6 images
hair-fescue — Festuca filiformis Pourret — 8 images
hairlike pondweed — Potamogeton bicupulatus Fernald ( = capillaceus Poiret) — 2 images
hairy bedstraw — Galium pilosum Aiton — 14 images
hairy boneset — Eupatorium rotundifolium var. ovatum (Bigelow) Torrey ( = pubescens Muhl. ex Willd.) — 3 images
hairy bush-clover — Lespedeza hirta (L.) Hornem. — 8 images
hairy bush-pea, Blue Ridge buckbean — Thermopsis villosa (Walter) Fern. et Schubert — 3 images
hairy cat's-ear — Hypochaeris radicata L. — 36 images
hairy pinweed — Lechea mucronata Raf. ( = villosa Ell.) — 45 images
hairy quickweed — Galinsoga quadriradiata Ruiz et Pavon ( = ciliata (Raf.) Blake) — 8 images
hairy rock-cress, hoary bittercress — Cardamine hirsuta L. — 30 images
hairy small-leaved tick-trefoil — Desmodium ciliare (Muhl. ex Willd.) DC. — 9 images
halberd-leaf orache — Atriplex prostrata Boucher ex DC ( = A. patula var. hastata auct. non (L.) A. Gray) — 23 images
halberdleaf tearthumb — Polygonum arifolium L. ( = Persicaria arifolia (L.) Haroldson) — 11 images
hard-stemmed bulrush — Scirpus acutus Muhl. ex Bigelow ( = Schoenoplectus acutus (Muhl. ex Bigel.) A. et D. Love) — 5 images
hay-scented fern — Dennstaedtia punctilobula (Michaux) T. Moore — 17 images
heartleaf willow — Salix eriocephala Michaux — 51 images
heath white aster — Aster ericoides L. ( = Symphyotrichum ericoides (L.) Nesom) — 13 images
hedge-maple — Acer campestre L. — 1 image
hedge mustard — Sisymbrium officinale (L.) Scop. — 4 images
helleborine — Epipactis helleborine (L.) Crantz — 18 images
henbit — Lamium amplexicaule L. — 5 images
Hickey's clubmoss — Lycopodium hickeyi W.L. Wagner, Beitel et Moran — 6 images
highbush blueberry — Vaccinium corymbosum L. — 45 images
hightide bush, saltmarsh-elder — Iva frutescens ssp. oraria (Bartlett) R.C. Jackson — 24 images
hillside blueberry, dryland blueberry — Vaccinium pallidum Ait. ( = vacillans Kalm ex Torr.) — 29 images
Himalayan knotweed, garden smartweed — Polygonum polystachyum Wallich ex Meisner ( = Persicaria wallichii Greuter et Burdet, Reynoutria polystachya (Wallich ex Meisner) Moldenke) — 13 images
hoary alyssum — Berteroa incana (L.) DC. — 5 images
hoary mountain-mint — Pycnanthemum incanum (L.) Michx. — 4 images
hoary rockrose — Helianthemum bicknellii Fernald ( = Crocanthemum bicknellii (Fern.) Barnh.) — 20 images
hoary willow — Salix candida Fluegge ex Willd. — 18 images
hog-peanut — Amphicarpaea bracteata (L.) Fern. — 7 images
hollow-stemmed Joe-Pye-weed — Eupatorium fistulosum Barratt ( = Eutrochium fistulosum (Barratt) E.E. Lamont) — 14 images
hooked crowfoot — Ranunculus recurvatus Poiret — 19 images
hop sedge — Carex lupulina Muhl. ex Willd. — 4 images
horned bladderwort, naked bladderwort — Utricularia cornuta Michaux — 27 images
horse-chestnut — Aesculus hippocastanum L. — 4 images
horse-nettle — Solanum carolinense L. — 8 images
horseweed, hogweed — Conyza canadensis (L.) Cronq. ( = Erigeron canadensis L.) — 26 images
hosta — Hosta sp. — 3 images
humped bladderwort — Utricularia gibba L. — 2 images
hybrid of brittle and white willow — Salix x fragilis — 13 images
hyssop — Hyssopus officinalis L. — 2 images
hyssop hedge-nettle — Stachys hyssopifolia Michaux — 15 images
hyssop-leaved boneset — Eupatorium hyssopifolium L. — 13 images
India lovegrass — Eragrostis pilosa (L.) Beauv. — 2 images
Indian cucumber-root — Medeola virginiana L. — 20 images
Indian hemp — Apocynum cannabinum L. — 7 images
Indian pipe — Monotropa uniflora L. — 14 images
Indian strawberry — Duchesnea indica (Andr.) Focke — 9 images
Indian sweetgrass — Hierochloe odorata (L.) Beauv. ( = Anthoxanthum nitens (Weber) Y.Schouten et Veldcamp) — 8 images
Indian tobacco — Lobelia inflata L. — 17 images
indigo bush — Amorpha fruticosa L. — 8 images
inflated bladderwort — Utricularia inflata Walter — 16 images
inkberry — Ilex glabra (L.) Gray — 20 images
intermediate wood fern — Dryopteris intermedia (Muhl. ex Willd.) A. Gray — 17 images
interrupted fern — Osmunda claytoniana L. — 17 images
inundated horn-sedge — Rhynchospora inundata (Oakes) Fern. — 2 images
ironwood, hornbeam — Carpinus caroliniana Walter — 19 images
Italian ryegrass — Lolium multiflorum Lam. — 6 images
ivy-leaved speedwell — Veronica hederifolia L. — 4 images
Jack-in-the-pulpit — Arisaema triphyllum (L.) Schott — 15 images
Jack pine — Pinus banksiana Lamb. — 9 images
jagged chickweed — Holosteum umbellatum L. — 16 images
Japanese andromeda — Pieris japonica (Thunb.) D. Don — 5 images
Japanese barberry — Berberis thunbergii DC. — 16 images
Japanese black pine — Pinus thunbergii Parl. ( = thunbergiana Franco) — 15 images
Japanese flowering crabapple — Malus floribunda Sieb. ex Van Houtte — 5 images
Japanese holly — Ilex crenata Thunb. — 5 images
Japanese honeysuckle — Lonicera japonica Thunb. — 18 images
Japanese knotweed — Polygonum cuspidatum Sieb. et Zucc. ( = Fallopia japonica (Houtt.) L.P. Ronse Decraene, Reunoutria japonica Houtt.) — 20 images
Japanese maple — Acer palmatum Thunb. — 3 images
Japanese millet — Echinochloa frumentacea (Roxb.) Link ( = Echinochloa crus-galli var. frumentacea (Link) W.F.Wight) — 3 images
Japanese pagoda-tree — Styphnolobium japonicum (L.) Schott. ( = Sophora japonica L.) — 3 images
Japanese privet, ibota privet — Ligustrum obtusifolium Sieb. et Zucc. — 14 images
Japanese rose, saltspray rose — Rosa rugosa Thunb. — 28 images
Japanese spiraea — Spiraea japonica L. f. — 7 images
Japanese spurge — Pachysandra terminalis Sieb. et Zucc. — 4 images
Jerisalem artichoke — Helianthus tuberosus L. — 3 images
jetbead, white kerria — Rhodotypos scandens (Thunb.) Makino — 13 images
jewelweed — Impatiens capensis Meerb. — 12 images
Jimson-weed — Datura stramonium L. — 7 images
jointweed — Polygonella articulata (L.) Meisner ( = Polygonum articulatum L.) — 27 images
jumpseed — Polygonum virginianum ( = Tovara virginiana (L.) Raf., Persicaria virginiana (L.) Gaertner) — 7 images
June grass — Poa pratensis L. — 3 images
katsura tree — Cercidiphyllum japonicum Zieb. et Zucc. — 1 image
kidney-leaved buttercup, small-flowered crowfoot — Ranunculus abortivus L. — 7 images
king-devil, meadow hawkweed — Hieracium pratense Tausch ( = H. caespitosum Dumort.) — 14 images
kinnikinnik, bearberry — Arctostaphylos uva-ursi A. et D. Love et Kapoor — 23 images
kudzu — Pueraria montana var. lobata (Willd.) Maesen et S. Almeida — 12 images
lady's thumb — Polygonum persicaria L. ( = Persicaria maculosa (L.) S.F. Gray) — 20 images
lanceleaf tickseed — Coreopsis lanceolata L. — 6 images
large crabgrass — Digitaria sanguinalis (L.) Scop. — 12 images
large-leaved aster — Aster macrophyllus L. ( = Eurybia macrophylla (L.) Cassini 1825) — 16 images
large-leaved white violet — Viola incognita Brainerd — 3 images
largepod pinweed — Lechea intermedia Leggett ex Britt. — 20 images
large purple fringed orchis — Platanthera grandiflora (Bigelow) Lindley ( = Habenaria fimbriata (Aiton) R. Br.) — 7 images
large pussy willow — Salix discolor Muhl. — 51 images
larger water-plantain, northern water-plantain — Alisma triviale Pursh ( = plantago-aquatica var. americanum Schultes et Schultes) — 7 images
large whorled pogonia — Isotria verticillata (Willd.) Raf. — 9 images
leatherleaf, cassandra — Chamaedaphne calyculata (L.) Moench — 18 images
leatherwood — Dirca palustris L. — 5 images
Leggett's pinweed — Lechea pulchella var. pulchella Raf. ( = leggettii Britton et Hollick) — 3 images
lemon balm — Melissa officinalis L. — 15 images
lesser celandine, pilewort — Ranunculus ficaria L. ( = Ficaria verna (L.) Huds.) — 8 images
lesser or common burdock — Arctium minus Bernh. — 7 images
lesser water-plantain, southern water-plantain — Alisma subcordatum Raf. ( = plantago-aquatica var. parviflorum (Pursh) Torrey) — 2 images
licorice goldenrod, sweet goldenrod — Solidago odora Aiton — 17 images
lily-of-the-valley — Convallaria majalis L. — 7 images
linear-leaved panic-grass — Dichanthelium linearifolium (Scribner) Gould ( = Panicum linearifolium Scribner) — 4 images
little bluestem — Schizachyrium scoparium (Michaux) Nash — 18 images
little ladies' tresses — Spiranthes tuberosa Raf. — 7 images
little lovegrass — Eragrostis minor Host ( = poaeoides Beauv. ex R. et S.) — 2 images
little merrybells — Uvularia sessilifolia L. — 16 images
little ricegrass — Oryzopsis pungens (Torrey ex Spreng.) A. S. Hitchc. ( = Piptatherum pungens (Torr. ex Spreng.) Dom) — 3 images
livid amaranth — Amaranthus blitum ssp. emarginatus Carreter ( = lividus L.) — 9 images
Loesel's mustard — Sisymbrium loeselii L. — 5 images
Lombardy poplar, black poplar — Populus nigra L. — 13 images
Long's bulrush — Scirpus longii Fernald — 2 images
long-beaked baldsedge — Rhynchospora scirpoides (Torrey) A. Gray — 40 images
long-beaked Pennsylvania sedge — Carex lucorum Willd. ex Link ( = Carex pensylvanica var distans Peck) — 6 images
longbranch frostweed — Helianthemum canadense (L.) Michx. ( = Crocanthemum canadense (L.) Britton) — 36 images
long-culmed sedge — Carex folliculata L. — 11 images
long-leaved pondweed — Potamogeton nodosus Poiret — 4 images
long-spurred violet — Viola rostrata Pursh — 5 images
long-stalked aster — Aster dumosus L. ( = Symphyotrichum dumosum G.L.Nesom 1994) — 14 images
long-stalked monkey-flower — Mimulus ringens L. — 10 images
loose-flowered woodland sedge — Carex laxiflora Lam. — 11 images
lowbush blueberry — Vaccinium angustifolium Ait. — 14 images
low cudweed — Gnaphalium uliginosum L. — 5 images
low frostweed, low rockrose — Helianthemum propinquum Bicknell ( = Crocanthemum propinquum (Bicknell) Bicknell) — 18 images
lowly water-milfoil — Myriophyllum humile (Raf.) Morong — 25 images
lucerne, blue alfalfa — Medicago sativa L. — 3 images
mad-dog skullcap, blue skullcap — Scutellaria lateriflora L. — 11 images
mahaleb cherry — Prunus mahaleb L. — 3 images
maidenhair spleenwort — Asplenium trichomanes L. — 1 image
maleberry — Lyonia ligustrina (L.) DC. — 36 images
male fern — Dryopteris filix-mas (L.) Schott. — 4 images
maple-leaf goosefoot — Chenopodium simplex (Torrey) Raf. ( = hybridum L.) — 7 images
maple-leaf viburnum — Viburnum acerifolium L. — 15 images
marginal wood fern — Dryopteris marginalis (L.) A. Gray — 17 images
marsh blue violet — Viola cucullata Aiton — 9 images
marsh cinquefoil — Comarum palustre L. ( = Potentilla palustris (L.) Scop.) — 10 images
marsh fern — Thelypteris palustris Schott — 14 images
marsh hedge-nettle — Stachys palustris L. — 13 images
marsh marigold — Caltha palustris L. — 10 images
marsh or Canada rush — Juncus canadensis Gay ex LaHarpe — 22 images
marsh scullcap, common scullcap — Scutellaria galericulata L. ( = epilobiifolia Hamilton) — 5 images
marsh St. John's-wort — Triadenum virginicum (L.) Raf. ( = Hypericum virginicum L.) — 13 images
marsh yellowcress — Rorippa palustris (L.) Besser — 17 images
Maryland or smooth small-leaved tick-trefoil — Desmodium marilandicum (L.) DC. — 10 images
Massachusetts fern — Thelypteris simulata (Davenport) Nieuwl. — 15 images
matted pearlwort, birdseye — Sagina procumbens L. — 13 images
meadow blue-eyed grass — Sisyrinchium montanum var. crebrum Fern. — 2 images
meadow foxtail — Alopecurus pratensis L. — 2 images
meadow horsetail — Equisetum pratense Ehrh. — 3 images
meadowsweet — Spiraea alba var. latifolia (Aiton) Dippel ( = latifolia (Aiton) Borkh.) — 11 images
mermaid-weed — Proserpinaca palustris L. — 16 images
Mexican tea, wormseed — Chenopodium ambrosioides L. ( = Dysphania ambrosioides (L.) Mosyakin et Clemants) — 13 images
mile-a-minute — Polygonum perfoliatum L. ( = Persicaria perfoliata (L.) H. Gross) — 27 images
mockernut hickory — Carya alba (L.) Nutt. ex Ell. ( = tomentosa (Lam. ex Poiret) Nutt.) — 19 images
morning-glory — Calystegia sepium (L.) R. Br. — 10 images
Morrow's honeysuckle — Lonicera morrowii A. Gray — 28 images
motherwort — Leonurus cardiaca L. — 4 images
moth mullein — Verbascum blattaria L. — 6 images
mountain laurel — Kalmia latifolia L. — 26 images
mouse-ear cress — Arabidopsis thaliana (L.) Heynh. — 18 images
mouse-ear hawkweed — Hieracium pilosella L. — 5 images
mud hedge-hyssop — Gratiola neglecta Torrey — 7 images
multiflora rose — Rosa multiflora Thunb. ex Murray — 18 images
musk mallow — Malva moschata L. — 4 images
nake-flowered tick-trefoil — Desmodium nudiflorum (L.) DC. ( = Hylodesmum nudiflorum (L.) H. Ohashi et R.R. Mill) — 5 images
nannyberry, sweet viburnum — Viburnum lentago L. — 18 images
Nantucket shadbush — Amelanchier nantucketensis Bickn. — 9 images
narrow beech fern — Phegopteris connectilis (Michaux) Watt ( = Thelypteris phegopteris (L.) Slosson) — 11 images
narrow-leaved bittercress — Cardamine parviflora var. arenicola (Britton) O.E. Schulz — 11 images
narrow-leaved bush-clover — Lespedeza angustifolia (Pursh) Ell. — 9 images
narrow-leaved cattail — Typha angustifolia L. — 12 images
narrow-leaved loosestrife — Lysimachia hybrida Michaux — 11 images
narrow-leaved peppergrass — Lepidium ruderale L. — 3 images
narrow-leaved plantain, English plantain — Plantago lanceolata L. — 7 images
narrow-leaved vetch — Vicia sativa ssp. nigra (L.) Ehrh. — 5 images
narrow-leaved white-topped aster — Sericocarpus linifolius (L.) B.S.P. ( = Aster solidagineus Michaux) — 13 images
narrow-leaved willow-herb — Epilobium leptophyllum Raf. — 2 images
needle spike-rush — Eleocharis acicularis (L.) R. et S. — 28 images
netted chain fern — Woodwardia areolata (L.) T. Moore — 19 images
New England aster — Aster novae-angliae L. ( = Symphyotrichum novae-angliae Nesom 1994) — 18 images
New England blazingstar — Liatris scariosa var. novae-angliae Lunell — 19 images
New England boneset, pondshore boneset — Eupatorium leucolepis var. novae-angliae Fernald ( = novae-angliae V.I. Sullivan) — 8 images
New Jersey tea — Ceanothus americanus L. — 12 images
New York aster — Aster novi-belgii L. ( = Symphyotrichum novi-belgii (L.) Nesom 1994) — 29 images
New York fern — Thelypteris noveboracensis (L.) Nieuwl. — 8 images
nimblewill — Muhlenbergia schreberi J.F. Gmelin — 2 images
nipplewort — Lapsana communis L. — 10 images
nodding bur-marigold — Bidens cernua L. — 4 images
nodding ladies' tresses — Spiranthes cernua (L.) L.C. Rich. — 15 images
nodding smartweed — Polygonum lapathifolium L. ( = Persicaria lapathifolia (L.) S.F. Gray) — 2 images
nodding trillium — Trillium cernuum L. — 7 images
northern arrow-wood — Viburnum dentatum var. lucidum Ait. ( = recognitum Fern.) — 10 images
northern bladderwort, flat-leaved milfoil — Utricularia intermedia Hayne — 6 images
northern blueflag — Iris versicolor L. — 21 images
northern bog clubmoss — Lycopodiella inundata (L.) Holub — 15 images
northern coastal violet, Britton's violet — Viola brittoniana Pollard — 7 images
northern dewberry — Rubus flagellaris Willd. — 11 images
northern dwarf St. John's-wort submersed form — Hypericum boreale f. callitrichoides Fassett — 9 images
northern fimbry — Fimbristylis autumnalis (L.) R. et S. — 11 images
northern lady-fern — Athyrium filix-femina var. angustum (Willd.) Lawson — 18 images
northern maidenhair — Adiantum pedatum L. — 7 images
northern meadowbeauty, wingstem meadow-pitchers — Rhexia virginica L. — 28 images
northern prickly ash — Zanthoxylum americanum P. Miller — 13 images
northern red oak — Quercus rubra L. — 41 images
northern ticklegrass — Agrostis scabra Willd. — 10 images
northern tickseed sunflower — Bidens coronata (L.) Britton — 10 images
northern white violet — Viola macloskeyi ssp. pallens (Banks ex DC.) M.S. Baker — 5 images
Norway maple — Acer platanoides L. — 16 images
Norway spruce — Picea abies (L.) Karst. — 34 images
Nuttall's milkwort — Polygala nuttallii Torrey et A. Gray — 10 images
Oakes' pondweed — Potamogeton oakesianus Robbins — 13 images
oak fern — Gymnocarpium dryopteris — 3 images
oak-leaf goosefoot — Chenopodium glaucum L. — 3 images
oats — Avena sativa L. — 1 image
olive spike-rush — Eleocharis flavescens var. olivacea (Torrey) Gleason ( = olivacea Torrey) — 19 images
one-flowered cancer-root — Orobanche uniflora L. — 4 images
one-seeded burr cucumber — Sicyos angulatus L. — 4 images
orange day-lily — Hemerocallis fulva (L.) L. — 8 images
orangegrass — Hypericum gentianoides (L.) B.S.P. — 19 images
orange hawkweed — Hieracium aurantiacum L. — 2 images
orchard grass — Dactylis glomerata L. — 6 images
Oriental bittersweet, Asian bittersweet — Celastrus orbiculata Thunb. — 62 images
ostrich fern — Matteuccia struthiopteris (L.) Todaro — 19 images
oxeye daisy — Leucanthemum vulgare Lam. — 5 images
pagoda dogwood, alternate-leaved dogwood — Cornus alternifolia L. f. ( = Swida alternifolia (L.f.) Small) — 16 images
painted trillium — Trillium undulatum WIlld. — 4 images
pale corydalis or rock-harlequin — Corydalis sempervirens (L.) Pers. ( = Capnoides sempervirens (L.) Borkh.) — 18 images
pale mannagrass — Torreyochloa pallida (Torrey) Church ( = Glyceria pallida (Torrey) Trin.) — 1 image
pale St. John's-wort — Hypericum ellipticum Hooker — 16 images
pale swallow-wort — Cynanchum rossicum (Kleopov) Borhidi — 10 images
panickled screw-stem — Bartonia paniculata (Michaux) Muhl. — 6 images
panicled tick-trefoil — Desmodium paniculatum (L.) DC. — 6 images
paper birch — Betula papyrifera Marsh. — 25 images
paper birch x gray birch — Betula papyrifera x populifolia — 4 images
partridgeberry — Mitchella repens L. — 12 images
partridge pea — Chamaecrista fasciculata (Michaux) Greene ( = Cassia fasciculata Michaux) — 9 images
pasture thistle — Cirsium pumilum (Nutt.) Sprengel — 11 images
path rush, yard rush — Juncus tenuis Willd. — 7 images
peach — Prunus persica (L.) Batsch — 15 images
pear — Pyrus communis L. — 2 images
Pennsylvania sedge — Carex pensylvanica Lam. — 12 images
peppermint — Mentha x piperita L. — 4 images
perennial glasswort — Salicornia virginica L. — 26 images
perennial pea — Lathyrus latifolius L. — 2 images
perennial saltmarsh aster — Aster tenuifolius L. ( = Symphyotrichum tenuifolium (L.) Nesom) — 18 images
periwinkle — Vinca minor L. — 9 images
perplexing tick-trefoil — Desmodium perplexum Schub. ( = glabellum (Mischx.) DC.) — 3 images
Philadelphia fleabane — Erigeron philadelphicus L. — 5 images
pickerel-weed — Pontederia cordata L. — 12 images
Pickering's reedgrass — Calamagrostis pickeringii A. Gray — 9 images
pignut hickory — Carya glabra (P. Miller) Sweet — 23 images
pigweed, lamb's quarters — Chenopodium album L. — 18 images
pin cherry, fire cherry, bird cherry — Prunus pensylvanica L. f. — 29 images
pineapple weed — Matricaria discoidea DC. ( = matricarioides auct. ) — 3 images
pinebarren golden heather — Hudsonia ericoides L. — 31 images
pine-sap, false beech-drops — Monotropa hypopitys L. ( = Hypopitys monotropa Crantz) — 20 images
pink lady's slipper — Cypripedium acaule Aiton — 7 images
pink tickseed — Coreopsis rosea Nutt. — 33 images
pinkweed — Polygonum pensylvanicum L. ( = Persicaria pensylvanica (L.) G. Maza) — 20 images
pin oak — Quercus palustris Muenchh. — 11 images
pipewort, white buttons — Eriocaulon aquaticum (Hill) Druce ( = septangulare With.) — 28 images
pipsissewa — Chimaphila umbellata ssp. cisatlantica (Blake) Hulten — 6 images
pitch pine — Pinus rigida P. Mill. — 81 images
plantain-leaf sedge — Carex plantaginea Lam. — 2 images
plantain-leaved pussytoes — Antennaria plantaginifolia (L.) Richardson — 9 images
Plymouth gentian — Sabatia kennedyana Fern. — 40 images
pod-grass — Scheuchzeria palustris L. — 15 images
poison ivy — Toxicodendron radicans (L.) Kuntze ( = Rhus radicans L.) — 38 images
poison sumac — Rhus vernix L. ( = Toxicodendron vernix (L.) Kuntze) — 19 images
pokeweed — Phytolacca americana L. — 15 images
pondshore flatsedge — Cyperus dentatus Torrey — 17 images
pondshore muhly — Muhlenbergia uniflora (Muhl.) Fern. — 19 images
pondshore nutsedge — Scleria reticularis Michaux — 30 images
pondshore or terete arrowhead — Sagittaria teres S. Watson — 47 images
pondshore panic-grass — Dichanthelium acuminatum var. implicatum (Scribn.) Freckmann et Lelong ( = Panicum meridionale Ashe, Panicum implicatum (Scribn.) Fern.) — 8 images
pondshore pennywort — Hydrocotyle umbellata L. — 4 images
pondshore rush — Juncus pelocarpus E. Meyer — 23 images
pondshore smartweed — Polygonum puritanorum Fern. ( = Persicaria puritanorum (Fern.) Sojak) — 6 images
pondshore water-horehound, sessile water-horehound — Lycopus amplectens Raf. — 13 images
post oak — Quercus stellata Wangenh. — 9 images
poverty grass — Sporobolus vaginiflorus (Torrey ex A. Gray) Wood — 4 images
poverty-grass — Aristida dichotoma Michaux — 5 images
prairie ironweed — Vernonia fasciculata Michaux — 7 images
prairie willow, upland willow — Salix humilis Marsh. — 60 images
prickly lettuce — Lactuca serriola L. — 21 images
prickly or seabeach saltwort — Salsola kali L. — 26 images
primrose-leaf violet — Viola x primulifolia L. — 7 images
princess-pine or tree clubmoss — Lycopodium obscurum L. — 19 images
Pringle's aster — Aster pilosus var. pringlei (A. Gray) Blake ( = Symphyotrichum pilosum var. pringlei (A. Gray) Nesom) — 8 images
prostrate amaranth, tumbleweed — Amaranthus blitoides S. Watson — 4 images
prostrate orache — Atriplex glabriuscula Edmondston — 12 images
prostrate or creeping juniper — Juniperus horizontalis Moensch — 8 images
prostrate tick-trefoil — Desmodium rotundifolium DC. — 7 images
purple bladderwort — Utricularia purpurea Walt. — 17 images
purple chokeberry — Aronia x prunifolia (Marsh.) Rehder ( = x floribunda (Lindl.) Spach) — 19 images
purple deadnettle — Lamium purpureum L. — 9 images
purple false foxglove — Agalinis purpurea (L.) Pernnell ( = Gerardia purpurea L.) — 20 images
purple-flowering raspberry, thimbleberry — Rubus odoratus L. — 10 images
purple-head sneezeweed — Helenium flexuosum Raf. ( = nudiflorum Nutt.) — 6 images
purple loosestrife — Lythrum salicaria L. — 15 images
purple lovegrass — Eragrostis spectabilis (Pursh) Steudel — 14 images
purple milkwort, common milkwort — Polygala sanguinea L. — 5 images
purple pitcherplant — Sarracenia purpurea L. — 15 images
purple sandgrass — Triplasis purpurea (Walter) Chapman — 7 images
purslane speedwell, neckweed — Veronica peregrina L. — 3 images
pussytoes — Antennaria neglecta Greene — 6 images
Queen Anne's lace — Daucus carota L. — 3 images
quickweed, gallant soldiers — Galinsoga parviflora Cav. — 2 images
rabbit-foot clover — Trifolium arvense L. — 8 images
racemed milkwort, bitter mlkwort — Polygala polygama Walter — 13 images
ragged robin — Lychnis flos-cuculi L. — 6 images
rampion or creeping bellflower — Campanula rapunculoides L. — 3 images
rattlesnake-fern — Botrychium virginianum (L.) Sw. — 13 images
rattlesnake grass — Glyceria canadensis (Michaux) Trin. — 9 images
rattlesnake weed — Hieracium venosum L. — 4 images
red-berried elderberry — Sambucus racemosa ssp. pubens (Michaux) House — 3 images
red campion — Silene dioica (L.) Clairv. ( = Lychnis dioica L.) — 3 images
red clover — Trifolium pratense L. — 5 images
red fescue — Festuca rubra L. — 2 images
red maple — Acer rubrum L. — 59 images
red osier — Cornus sericea L. ( = Swida sericea (L.) Holub, stolonifera Michaux) — 4 images
red pine — Pinus resinosa Ait. — 15 images
redroot — Lachnanthes caroliniana (Lam.) Dandy — 18 images
red-seeded dandelion — Taraxacum laevigatum (Willd.) DC. ( = erythrospermum Andrz. ex Besser) — 4 images
red spruce — Picea rubens Sarg. — 9 images
red trillium, purple trillium — Trillium erectum L. — 12 images
red-veined dock — Rumex obtusifolius L. — 23 images
reed bluejoint — Calamagrostis coarctata (Torrey) Eaton ( = cinnoides W. Barton) — 4 images
reed canarygrass — Phalaris arundinacea L. — 17 images
resupinate bladderwort — Utricularia resupinata B.D. Greene ex Bigelow — 19 images
rhodora — Rhododendron canadense (L.) Torrey — 10 images
rice cut-grass — Leersia oryzoides (L.) Sw. — 31 images
river-bank grape, frost grape — Vitis riparia Michaux — 1 image
river birch — Betula nigra L. — 24 images
river bulrush — Scirpus fluviatilis (Torrey) A. Gray ( = Bolboschoenus fluviatilis (Torr.) Sojak) — 4 images
river horsetail — Equisetum fluviatile L. — 22 images
Robbins' spike-rush — Eleocharis robbinsii Oakes — 41 images
Robert geranium — Geranium robertianum L. — 12 images
rockcap fern or common polypody — Polypodium virginianum L. — 13 images
rock knotweed — Polygonum tenue Michaux — 12 images
rose pogonia — Pogonia ophioglossoides (L.) Ker-Gawler — 9 images
rose wisted-stalk — Streptopus roseus Michaux ( = lanceolatus var. roseus ) — 6 images
rough avens, floodplain avens — Geum laciniatum Murray — 13 images
rough bedstraw — Galium asprellum L. — 4 images
rough bluegrass — Poa trivialis L. — 5 images
rough boneset, verbena boneset — Eupatorium pilosum Walter ( = rotundifolium var. saundersii (Porter) Cronq.) — 25 images
rough fleabane — Erigeron strigosus Muhl. — 6 images
rough goldenrod, barrens goldenrod — Solidago rugosa ssp. aspera (Aiton) Cronq. — 10 images
rough hawkweed — Hieracium scabrum Michaux — 10 images
rough-stemmed goldenrod — Solidago rugosa P. Miller — 12 images
round-fruited seedbox — Ludwigia sphaerocarpa Elliott — 7 images
round-headed bush-clover — Lespedeza capitata Michx. — 11 images
roundleaf sundew — Drosera rotundifolia L. — 24 images
round-leaved dogwood, talus dogwood — Cornus rugosa Lam. ( = Swida rugosa (Lam.) Rydb.) — 6 images
round-leaved shinleaf, glossy shinleaf — Pyrola americana Sweet ( = rotundifolia var. americana (Sweet) Fern.) — 22 images
royal fern — Osmunda regalis L. — 22 images
running clubmoss, common clubmoss — Lycopodium clavatum L. — 9 images
running serviceberry, running shadbush — Amelanchier spicata (Lam.) K. Koch ( = stolonifera Wiegand) — 33 images
Russian olive, oleaster, silverberry — Elaeagnus angustifolia L. — 4 images
rusty and ash willow with hybrids — Salix atrocinerea and cinerea — 15 images
rusty willow — Salix atrocinerea Brotero ( = S. cinerea ssp. oleifolia (Smith) Macreight) — 93 images
sago false pondweed, sago pondweed — Stuckenia pectinata (L.) Boerner ( = Potamogeton pectinatus L. ) — 1 image
Sakhalin corktree — Phellodendron sachalinense (Fr. Schmidt) Sarg. — 18 images
Sakhalin spindletree — Euonymus sachalinensis (Fr. Schmidt) Maxim. — 9 images
saline spike-rush, one-glumed spike-rush — Eleocharis uniglumis (Link) Schultes ( = halophila Fern. et Brack.) — 12 images
sallow sedge — Carex lurida Wahlenb. — 14 images
salt grass — Distichlis spicata (L.) Greene — 8 images
salt-hay — Spartina patens (Aiton) Muhl. — 17 images
saltmarsh arrow-grass — Triglochin maritimum L. — 20 images
saltmarsh bulrush — Scirpus robustus Pursh ( = Bolboschoenus robustus (Pursh) Sojak) — 9 images
saltmarsh false foxglove — Agalinis maritima (Raf.) Raf. ( = Gerardia maritima Raf.) — 11 images
saltmarsh fleabane — Pluchea odorata var. succulenta (Fern.) Cronq. — 7 images
saltmarsh rush — Juncus gerardii Loisel — 9 images
saltmarsh sand-spurrey — Spergularia salina J. et K. Presl ( = marina (L.) Griseb.) — 14 images
saltmarsh sea-blite — Suaeda maritima (L.) Dumort. — 27 images
saltmarsh silverweed — Potentilla egedii ssp. groenlandica (Tratt.) A. Loeve ( = Argentina egedii ssp. groenlandica (Tratt.) A. Loeve, anserina var. groenlandica Tratt.) — 8 images
saltmarsh spikerush, beaked spikerush — Eleocharis rostellata (Torrey) Torrey — 16 images
saltmarsh straw sedge — Carex hormathodes Fernald — 12 images
saltmarsh threesquare — Scirpus americanus Pers. ( = Schoenoplectus americanus (Pers.) Volk. ex Schrinz et Keller) — 5 images
saltmarsh wild rye — Elymus virginicus var. halophilus (Bickn.) Wieg. — 6 images
saltwater cordgrass — Spartina alterniflora Loisel — 21 images
sand cherry — Prunus depressa Pursh — 7 images
sand cherry — Prunus susquehanae Willd. ( = pumila var. susquehanae (Willd.) Jaeger) — 23 images
sand-sedge — Bulbostylis capillaris (L.) C.B. Clarke — 13 images
sassafras — Sassafras albidum (Nutt.) Nees — 47 images
Saul's oak — Quercus x saulii C. Schneider — 14 images
Savoy hawkweed, Canada hawkweed — Hieracium sabaudum L. ( = canadense hort. Goett ex Froel.) — 11 images
sawbrier, wild sarsaparilla — Smilax glauca Walter — 20 images
scarlet lychnis, Maltese cross — Lychnis chalcedonica L. — 10 images
scarlet oak — Quercus coccinea Muenchh. — 27 images
scarlet pimpernel — Anagallis arvensis L. — 6 images
scotch, sea-lovage — Ligusticum scothicum L. — 4 images
scotch broom — Cytisus scoparius (L.) Link — 6 images
Scotch elm — Ulmus glabra Hudson — 3 images
Scotch heather — Calluna vulgaris (L.) Hull — 16 images
Scotch pine — Pinus sylvestris L. — 10 images
scouring-rush — Equisetum hyemale L. — 10 images
screw-stem — Bartonia virginica (L.) B.S.P. — 14 images
Scribner's panic-grass — Dichanthelium oligosanthes var. scribnerianum (Nash) Gould — 9 images
scrub oak, bear oak — Quercus ilicifolia Wangenh. — 53 images
seabeach dock, white dock — Rumex pallidus Bigelow — 4 images
seabeach orache — Atriplex cristata Humb. et Bonpl. ex Willd. ( = arenaria Nutt.) — 10 images
seabeach pigweed — Chenopodium berlandieri var. macrocalycium (Aellen) Cronq. ( = macrocalycium Aellen) — 26 images
seabeach quack-grass — Elytrigia pungens (Pers.) Tutin ( = Agropyron littorale (Host) Dur.) — 2 images
seabeach quack-grass — Thinopyrum pycnanthum (Pers.) Barkworth ( = Elymus pungens ssp. pycnanthus (Godr.) O. Bolos et Vigo) — 3 images
seabeach sandwort — Honckenya peploides ssp. robusta (Fern.) Hulten — 20 images
sea lavender — Limonium carolinianum (Walt.) Britt. — 22 images
sea milkwort — Glaux maritima L. ( = Lysimachia maritima (L.) Galasso, Banfi et Soldano) — 5 images
sea-myrtle — Baccharis halimifolia L. — 12 images
sea rocket — Cakile edentula (Bigelow) Hook. — 14 images
seaside alkali-grass — Puccinellia maritima (Hudson) Parl. — 4 images
seaside angelica — Angelica lucida L. — 12 images
seaside goldenrod — Solidago sempervirens L. — 32 images
seaside knotweed — Polygonum glaucum Nutt. — 10 images
seaside pilewort — Erechtites hieracifolius var. megalocarpus (Fern.) Cronq. ( = Erechtites megalocarpus Fern.) — 1 image
seaside plantain — Plantago maritima var. juncoides (Lam.)A.Gray — 13 images
seaside spurge — Euphorbia polygonifolia L. ( = Chamaecyce polygonifolia (L.) Small) — 15 images
seaside wormwood — Artemisia campestris ssp. caudata (Michaux) Hall et Clements — 23 images
secund rush — Juncus secundus Beauv. ex Poiret — 5 images
sensitive fern — Onoclea sensibilis L. — 21 images
shadbush, serviceberry — Amelanchier cf. laevis — 33 images
shagbark hickory — Carya ovata (P. Miller) K. Koch — 20 images
sharp-leaved aster, whorled wood aster — Aster acuminatus Michaux ( = Oclemena acuminata (Michx.) Greene 1903) — 14 images
sharp-leaved goldenrod — Solidago arguta Aiton — 3 images
sharp-lobed liverleaf — Hepatica nobilis var. acuta (Pursh) Steyermark ( = Anemone acutiloba (DC.) G. Lawson) — 2 images
sheep's bit — Jasione montana L. — 15 images
sheep laurel — Kalmia angustifolia L. — 23 images
sheep sorrel, red sorrel — Rumex acetosella L. — 17 images
shepherd's purse — Capsella bursa-pastoris (L.) Medicus — 11 images
shepherd cress — Teesdalia nudicaulis Ait. f. — 33 images
shining clubmoss — Huperzia lucidula (Michaux) Trev. — 7 images
shining willow — Salix lucida Muhl. — 15 images
shiny rose, New England rose — Rosa nitida Willd. — 9 images
shore horsetail — Equisetum x litorale Kuhl. ex Rupr. ( = arvense x fluviatile ) — 7 images
shore juniper — Juniperus conferta Parl. — 28 images
short-beaked baldsedge — Rhynchospora nitens (Vahl.) A. Gray — 11 images
short-stalked bedstraw — Galium brevipes Fern. et Wiegand ( = trifidum ssp. brevipes A. et D. Love) — 4 images
short-toothed mountain mint — Pycnanthemum muticum (Michaux) Pers. — 15 images
showy aster — Aster spectabilis Ait. ( = Eurybia spectablis (Ait.) G.L.Nesom 1994) — 34 images
showy goldenrod — Solidago speciosa Nutt. — 1 image
showy ticktrefoil — Desmodium canadense (L.) DC. — 14 images
Siberian crabapple — Malus baccata (L.) Borkh. — 7 images
Siberian elm — Ulmus pumila L. — 7 images
Siberian squill — Scilla sibirica Haw. — 5 images
sickle-leaved golden aster — Pityopsis falcata (Pursh) Nutt. ( = Chrysopsis falcata (Pursh) Ell.) — 27 images
sickle-pod — Arabis canadensis L. ( = Boechera canadensis (L.) Al-SHehbaz) — 10 images
Siebold's euonymus — Euonymus sieboldiana Blume — 7 images
silky dogwood — Cornus amomum P. Miller ( = Swida amomum (P. Miller) Small) — 15 images
silky willow — Salix sericea Marsh. — 17 images
silver birch — Betula pendula Roth — 7 images
silver cinquefoil — Potentilla argentea L. — 6 images
silver maple — Acer saccharinum L. — 27 images
silverrod, white goldenrod — Solidago bicolor L. — 15 images
silvery hairgrass — Aira caryophyllea L. — 8 images
silvery spleenwort — Deparia acrostichoides (Swartz) M. Kato ( = Asplenium acrostichoides Sw.) — 5 images
six-weeks fescue — Vulpia octoflora var. tenella (Willd.) Fern. — 4 images
skunk-cabbage — Symplocarpus foetidus (L.) Salisb. ex Nutt. — 15 images
sleepy catchfly — Silene antirrhina L. — 7 images
slender, subulate, or zigzag bladderwort — Utricularia subulata L. — 13 images
slender bush-clover — Lespedeza virginica (L.) Britton — 8 images
slender cottonweed — Froelichia gracilis (Hooker) Moq. — 15 images
slender drooping sedge — Carex gracillima Schwein. — 5 images
slender gerardia — Agalinis tenuifolia (Vahl.) Raf. ( = Gerardia tenuifolia Vahl.) — 4 images
slender goldenrod — Euthamia tenuifolia (Pursh) Nutt. ( = Solidago tenuifolia Pursh, Euthamia caroliniana (L.) Greene ex Potter et Britton) — 16 images
slender ground-cedar, wiry ground-cedar — Diphasiastrum tristachyum (Pursh) Holub ( = Lycopodium tristachyum Pursh) — 11 images
slender-leaved mountain mint — Pycnanthemum tenuifolium Schrader — 12 images
slender mannagrass — Torreyochloa pallida var. fernaldii (A.S. Hitchc.) Dore ex Koyama et Kawano ( = Glyceria fernaldii (A.S. Hitchc.) St. John) — 4 images
slender marsh-pink — Sabatia campanulata (L.) Torrey — 7 images
slender naiad — Najas gracillima (A. Braun) Magnus — 2 images
slender pinweed — Lechea tenuifolia Michaux — 17 images
slender sand flatsedge — Cyperus lupulinus (Spreng.) Marcks. ( = filiculmis Vahl) — 15 images
slender spike-rush — Eleocharis tenuis (Willd.) Schultes — 1 image
slender willow, meadow willow — Salix petiolaris J. E. Smith — 33 images
slim amaranth, smooth pigweed — Amaranthus hybridus L. — 2 images
small beggar-ticks — Bidens discoidea (Torrey et A. Gray) Britton — 8 images
small floating bladderwort — Utricularia radiata Small ( = inflata var. minor Chapman) — 18 images
small-flowered gerardia — Agalinis paupercula (A. Gray) Britton ( = Gerardia purpurea var. parviflora Bentham) — 4 images
Smith's club-sedge — Scirpus smithii A. Gray ( = Schoenoplectus smithii (A. Gray) Sojak) — 14 images
smooth alder, common alder — Alnus serrulata (Ait.) Willd. — 27 images
smooth aster — Aster laevis L. ( = Symphyotrichum laeve A. et D. Löve 1982) — 9 images
smooth crabgrass — Digitaria ischaemum (Schreber) Muhl. — 2 images
smooth goldenrod, late goldenrod — Solidago gigantea Aiton — 12 images
smooth hawkweed — Hieracium piloselloides Vill. ( = florentinum All.) — 3 images
smooth panic grass — Dichanthelium spretum (J.A. Schultes) Freckmann ( = acuminatum var. spretum (J.A. Schultes) Freckm. et Lelong) — 3 images
smooth shadbush — Amelanchier laevis Wiegand ( = arborea var. laevis (Wieg.) Ahles) — 4 images
smooth spiderwort — Tradescantia ohiensis Raf. — 3 images
smooth sumac — Rhus glabra L. — 10 images
smooth white oldfield aster — Aster racemosus Ell. ( = Symphyotrichum racemosum Nesom 1994) — 6 images
smooth witherod — Viburnum nudum L. — 4 images
soft-stemmed bulrush — Scirpus tabernaemontani K.C. Gmelin ( = Schoenoplectus tabernaemontani (K.C. Gmelin) Pallas, validus Vahl.) — 15 images
soft-stemmed spike-rush — Eleocharis obtusa (Willd.) J.A. Schultes — 38 images
soft-stemmed spike-rush — Eleocharis obtusa var. ellipsoidalis Fern. — 10 images
soft-stemmed spike-rush — Eleocharis obtusa var. jejuna Fern. — 2 images
Solomon's seal — Polygonatum pubescens (Willd.) Pursh — 16 images
southern catalpa — Catalpa bignonioides Walter — 5 images
southern ground-cedar — Diphasiastrum digitatum (Dill. ex A. Br.) Holub ( = Lycopodium digitatum Dill. ex A. Brown, Lycopodium complanatum var. flabelliforme Fern.) — 13 images
Spanish bayonet, Adam's needle — Yucca filamentosa L. — 15 images
speckled alder — Alnus rugosa (Du Roi) Spreng. — 36 images
spicebush — Lindera benzoin (L.) Blume — 32 images
spinulose wood fern — Dryopteris carthusiana (Vill.) H. P. Fuchs ( = spinulosa (O.F.Mueller) Watt) — 10 images
spiny-leaved sow-thistle — Sonchus asper (L.) Hill — 1 image
spoonleaf sundew — Drosera intermedia Hayne — 14 images
spotted or bushy knapweed — Centaurea stoebe ssp. micranthos (Gugler) Hayek ( = maculosa auct.) — 47 images
spotted pondweed — Potamogeton pulcher Tuckerman — 2 images
spotted spurge — Euphorbia maculata L. ( = Chamaesyce maculata (L.) Small, supina Raf.) — 14 images
spotted St. John's-wort — Hypericum punctatum Lam. — 12 images
spreading cotoneaster — Cotoneaster divaricatus Rehd. et Wilson in Sarg. — 3 images
spreading dogbane — Apocynum androsaemifolium L. — 14 images
spreading ricegrass — Oryzopsis asperifolia Michaux — 15 images
spreading tick-trefoil — Desmodium x humifusum (Muhl. ex Bigelow) Beck ( = D. paniculatum x D. rotundifolium ) — 3 images
spring vetch — Vicia sativa L. — 3 images
spurrey — Spergula arvensis L. — 23 images
squaw-root, cancer-root — Conopholis americana (L.) Wallr. f. — 9 images
staghorn sumac — Rhus typhina L. ( = R. hirta (L.) Sudworth) — 19 images
star-of-Bethlehem — Ornithogalum umbellatum L. — 4 images
starry Solomon's seal — Smilacina stellata (L.) Desf. ( = Maianthemum stellatum (L.) Link) — 7 images
steeplebush — Spiraea tomentosa L. — 12 images
stiff aster, spruce aster — Ionactis linariifolia (L.) Greene ( = Aster linariifolius L.) — 24 images
stiff clubmoss — Lycopodium annotinum L. — 1 image
stiff-leaved sand sedge, shaved sedge — Carex tonsa (Fern.) Bickn. ( = rugosperma var. tonsa (Fern.) E. Voss) — 19 images
stinging nettle — Urtica dioica ssp. dioica L. — 12 images
stout blue-eyed-grass — Sisyrinchium angustifolium P. Miller — 15 images
strawberry — Fragaria vesca L. — 3 images
straw-colored flatsedge — Cyperus strigosus L. — 17 images
straw sedge — Carex straminea Willd. ex Schkuhr. — 7 images
strict hairgrass — Aira praecox L. — 8 images
striped maple — Acer pensylvanicum L. — 17 images
striped pipsissewa, spotted wintergreen — Chimaphila maculata (L.) Pursh — 11 images
Stueve's bush-clover — Lespedeza stuevei Nutt. — 4 images
sugar maple — Acer saccharum Marsh. — 15 images
sulphur cinquefoil — Potentilla recta L. — 10 images
summer-cypress — Kochia scoparia (L.) Schrader — 11 images
summer grape — Vitis aestivalis Michaux — 8 images
surface pondweed, ribbon-leaf pondweed — Potamogeton epihydrus Raf. — 15 images
swamp azalea — Rhododendron viscosum (L.) Torr. — 16 images
swamp beggar-ticks — Bidens connata Muhl. ex Willd. — 8 images
swamp candles — Lysimachia terrestris (L.) B.S.P. — 13 images
swamp cottonwood — Populus heterophylla L. — 4 images
swamp dewberry, dwarf raspberry — Rubus pubescens Raf. — 4 images
swamp fetterbush — Leucothoe racemosa (L.) Gray ( = Eubotrys racemosa (L.) Nutt.) — 21 images
swamp goldenrod — Solidago uliginosa Nutt. — 5 images
swamp gooseberry — Ribes hirtellum Michaux — 9 images
swamp loosestrife, water-willow — Decodon verticillatus (L.) Ell. — 25 images
swamp mallow — Hibiscus moscheutos L. ( = palustris L.) — 11 images
swamp pennywort, woodland pennywort — Hydrocotyle americana L. — 12 images
swamp rose — Rosa palustris Marsh. — 21 images
swamp saxifrage — Saxifraga pensylvanica L. ( = Micranthes pensylvanica (L.) Haw.) — 11 images
swamp white oak — Quercus bicolor Willd. — 47 images
Swan's sedge — Carex swanii (Fern.) Mackenzie — 6 images
sweetbay magnolia — Magnolia virginiana L. — 13 images
sweet birch, cherry birch, black birch — Betula lenta L. — 15 images
sweet cherry — Prunus avium (L.) L. — 7 images
sweet everlasting, fragrant cudweed — Gnaphalium obtusifolium L. ( = Pseudognaphalium obtusifolium (L.) Hilliard et Burtt) — 15 images
sweetfern — Comptonia peregrina (L.) Coulter — 20 images
sweetflag — Acorus calamus L. — 16 images
sweet gale — Myrica gale L. — 19 images
sweetgum — Liquidambar styraciflua L. — 10 images
sweet Joe-Pye-weed — Eupatorium purpureum L. ( = Eutrochium purpureum (L.) E.E. Lamont) — 7 images
sweet pepperbush — Clethra alnifolia L. — 31 images
sweet vernalgrass — Anthoxanthum odoratum L. — 15 images
sweet white violet — Viola blanda Willd. — 6 images
sweet woodruff — Galium odoratum (L.) Scop. ( = Asperula odorata L.) — 3 images
switchgrass — Panicum virgatum L. — 16 images
sycamore — Platanus occidentalis L. — 24 images
sycamore maple — Acer pseudoplatanus L. — 11 images
tall bush-clover — Lespedeza thunbergii ssp. formosa (Nakai) H. Ohashi — 25 images
tall buttercup — Ranunculus acris L. — 4 images
tall cinquefoil, glandular cinquefoil — Potentilla arguta Pursh ( = Drymocallis arguta (Pursh) Rydb.) — 6 images
tall fescue — Festuca arundinacea Schreber — 4 images
tall flat-topped white aster — Aster umbellatus P. Miller ( = Doellingeria umbellata (Mill.) Nees 1832) — 7 images
tall goldenrod — Solidago altissima L. ( = canadensis var. scabra Torr. et Gray) — 7 images
tall meadow-rue — Thalictrum pubescens Pursh ( = polygamum Muhl. ex Spreng.) — 17 images
tall milkweed — Asclepias exaltata L. — 6 images
tall oatgrass — Arrhenatherum elatius (L.) J. et K. Presl — 6 images
tall rattlesnake-root — Prenanthes altissima L. ( = Nabalus altissimus (L.) Hooker) — 9 images
tall rattlesnake-root, gall-of-the-earth — Prenanthes trifoliolata (Cass.) Fern. ( = Nabalus trifoliolatus Cass.) — 16 images
tall white aster, panicled aster — Aster lanceolatus Willd. ( = Symphyotrichum lanceolatum Nesom 1994) — 6 images
tall white violet — Viola canadensis L. — 4 images
tamarack, American larch — Larix laricina (DuRoi) K. Koch — 14 images
thicket shadbush, eastern serviceberry, juneberry — Amelanchier canadensis (L.) Medicus — 34 images
thimbleweed — Anemone virginiana L. — 1 image
thread-leaf sundew — Drosera filiformis Raf. — 26 images
threadstem sedge — Carex atlantica ssp. capillacea (Bailey) Reznicek ( = howei Mackenzie) — 9 images
three-finger, strawberry weed — Potentilla norvegica L. — 9 images
three-leaf goldthread — Coptis trifolia ssp. groenlandica (Oeder) Hulten ( = trifolia (L.) Salisb.) — 13 images
three-lobed violet — Viola palmata var. triloba (Schwein.) Gingins ex DC. ( = triloba Schwein.) — 12 images
three-seeded mercury — Acalypha rhomboidea Raf. — 7 images
three-toothed cinquefoil — Sibbaldiopsis tridentata (Aiton) Rydb. ( = Potentilla tridentata Aiton) — 2 images
three-way sedge — Dulichium arundinaceum (L.) Britton — 17 images
thyme-leaf pinweed — Lechea minor L. — 12 images
thyme-leaf speedwell — Veronica serpyllifolia L. — 6 images
tiger lily — Lilium lancifolium Thunb. ( = tigrinum Ker.) — 3 images
timothy — Phleum pratense L. — 12 images
tiny vetch, hairy vetch — Vicia hirsuta (L.) S.F. Gray — 3 images
toad rush — Juncus bufonius L. — 5 images
toothed white-topped aster — Sericocarpus asteroides (L.) B.S.P. ( = Aster paternus Cronq.) — 12 images
Toringo crabapple — Malus sieboldii (Regel) Rehder — 9 images
tower mustard — Arabis glabra (L.) Bernh. ( = Turritis glabra L.) — 14 images
Tradescant's aster — Aster tradescantii L. ( = Symphyotrichum tradescantii (L.) Nesom) — 4 images
trailing arbutus, mayflower — Epigaea repens L. — 32 images
trail oatgrass — Danthonia compressa Austin ex Peck — 14 images
tree-of-heaven — Ailanthus altissima (P. Miller) Swingle — 39 images
trembling aspen — Populus tremuloides Michaux — 31 images
trout-lily — Erythronium americanum Ker-Gawler — 13 images
trumpet creeper — Campsis radicans (L.) Seemann ex Bureau — 6 images
trumpet honeysuckle — Lonicera sempervirens L. — 8 images
tubercled spikerush — Eleocharis tuberculosa (Michaux) Roemer et Schultes — 14 images
tuberous water-horehound — Lycopus uniflorus Michaux — 40 images
tufted loosestrife — Lysimachia thyrsiflora L. — 9 images
tufted lovegrass — Eragrostis pectinacea (Michaux) Nees — 8 images
tuliptree — Liriodendron tulipifera L. — 13 images
tumbling mustard — Sisymbrium altissimum L. — 4 images
tupelo, black gum — Nyssa sylvatica Marshall — 68 images
Turk's cap lily — Lilium superbum L. — 3 images
tussock sedge — Carex stricta Lam. — 10 images
twig-sedge — Cladium mariscoides (Muhl.) Torrey — 7 images
twin-scaped bladderwort — Utricularia geminiscapa Benj. — 7 images
twisted yellow-eyed grass — Xyris torta Small — 19 images
twistwood, wayfaring tree — Viburnum lantana L. — 8 images
twoleaf miterwort, coolwort — Mitella diphylla L. — 1 image
upright yellow rocket — Barbarea stricta Andrz. — 3 images
variable watermilfoil — Myriophyllum heterophyllum Michaux — 12 images
variable water-starwort — Callitriche heterophylla Pursh — 9 images
variegated scouring rush — Equisetum variegatum Schleicher ex Weber et Mohr — 5 images
velvet-fruited sedge — Carex vestita Willd. — 11 images
velvet grass — Holcus lanatus L. — 10 images
velvet-leaf — Abutilon theophrasti Medicus — 2 images
velvet-leaf blueberry — Vaccinium myrtilloides Michaux — 3 images
Venus' looking-glass — Triodanis perfoliata (L.) Nieuwl. ( = Specularia perfoliata (L.) A. DC.) — 4 images
violet bush-clover — Lespedeza frutescens (L.) Hornem. ( = violacea auct., non (L.) Pers.) — 4 images
violet crabgrass — Digitaria violascens Link ( = ischaemum var. violascens (Link) Radford) — 9 images
violet wood-sorrel — Oxalis violacea L. — 4 images
virgin's-bower — Clematis virginiana L. — 11 images
Virginia chain fern — Woodwardia virginica (L.) Smith — 19 images
Virginia cotton-grass — Eriophorum virginicum L. — 8 images
Virginia creeper — Parthenocissus quinquefolia (L.) Planchon — 27 images
Virginia pepperweed — Lepidium virginicum L. — 21 images
Virginia rose, low rose — Rosa virginiana P. Miller — 24 images
Virginia spiderwort — Tradescantia virginiana L. — 10 images
Virginia water-horehound, floodplain water-horehound — Lycopus virginicus L. — 15 images
Virginia yellow flax — Linum virginianum L. — 5 images
wallflower (garden hybrid, parentage uncertain) — Erysimum x marshalli (Henfr.) Bois. — 4 images
Walter's cockspur — Echinochloa walterii (Pursh) Heller — 14 images
wand bush-clover — Lespedeza violacea (L.) Pers. ( = intermedia (S. Wats.) Britt.) — 12 images
wand-loosestrife — Lythrum virgatum L. — 5 images
Warty panic-grass — Panicum verrucosum Muhl. — 17 images
water-arum — Calla palustris L. — 15 images
water bulrush, floating bulrush — Scirpus subterminalis Torrey — 14 images
water chestnut; water caltrop — Trapa natans L. — 4 images
water chickweed — Callitriche stagnalis Scop. — 31 images
water-clover — Marsilea quadrifolia L. — 7 images
water-cress — Rorippa nasturtium-aquaticum (L.) Hayek ( = Nasturtium officinale Ait. f.) — 11 images
water-hemlock — Cicuta maculata L. — 10 images
water hyacinth — Eichhornia crassipes (Marth.) Solms-Laubach ( = speciosa Kunth) — 3 images
water lobelia — Lobelia dortmanna L. — 13 images
water parsnip — Sium suave Walter — 10 images
water-purslane, mud loosestrife — Ludwigia palustris (L.) Ell. — 19 images
watershield — Brasenia schreberi J.F. Gmel. — 24 images
waxy-leaved meadow-rue — Thalictrum revolutum DC. — 10 images
western ragweed — Ambrosia psilostachya DC. — 2 images
western wheatgrass — Pascopyrum smithii (Rydb.) A. Love ( = Agropyron smithii Rydb.) — 5 images
whip hawkweed — Hieracium flagellare Willd. — 7 images
white ash — Fraxinus americana L. — 31 images
white avens — Geum canadense Jacq. — 12 images
white beak-rush — Rhynchospora alba (L.) Vahl. — 13 images
white bedstraw — Galium mollugo L. — 17 images
whitebell honeysuckle — Lonicera x bella Zabel ( = morrowii x tatarica ) — 13 images
white campion or evening lychnis — Silene latifolia ssp. alba (P. Mill.) Greuter et Burdet ( = Lychnis alba P. Miller) — 19 images
white clover — Trifolium repens L. — 14 images
white fringed orchid — Platanthera blephariglottis (Willd.) Lindley ( = Habenaria blephariglottis (Willd.) Hooker) — 12 images
white mulberry — Morus alba L. — 7 images
white oak — Quercus alba L. — 48 images
white oldfield aster — Aster pilosus Willd. ( = Symphyotrichum pilosum (Willd.) Nesom) — 31 images
white pine — Pinus strobus L. — 57 images
white poplar — Populus alba L. — 7 images
white snakeroot — Ageratina altissima (L.) King et H.E.Robinson ( = Eupatorium rugosum Houtt.) — 10 images
white sweet-clover — Melilotus albus Medicus — 7 images
white turtlehead — Chelone glabra L. — 8 images
white vervain — Verbena urticifolia L. — 11 images
white willow — Salix alba L. — 6 images
white wood aster — Aster divaricatus L. ( = Eurybia divaricata (L.) G.L.Nesom 1994) — 10 images
whitlow-grass — Draba verna L. — 18 images
whorled loosestrife — Lysimachia quadrifolia L. — 12 images
whorled milkwort — Polygala verticillata L. — 9 images
wild barley — Hordeum leporinum Link ( = murinum ssp. leporinum ) — 7 images
wild basil — Clinopodium vulgare L. ( = Satureja vulgaris (L.) Fritsch) — 1 image
wild blue lettuce — Lactuca biennis (Moench) Fern. — 9 images
wild columbine, red columbine — Aquilegia canadensis L. — 19 images
wild cucumber, prickly cucumber — Echinocystis lobata (Michaux) Torrey et Gray — 8 images
wild geranium — Geranium maculatum L. — 8 images
wild leek — Allium tricoccum Ait. — 2 images
wild licorice — Galium circaezans Michaux — 9 images
wild licorice — Galium lanceolatum Torrey — 7 images
wild lupine — Lupinus perennis L. — 11 images
wild oatgrass, poverty grass — Danthonia spicata (L.) Beauv. — 6 images
wild parsnip — Pastinaca sativa L. — 8 images
wild radish — Raphanus raphanistrum L. — 19 images
wild raisin, witherod — Viburnum nudum var. cassinoides (L.) Torr. et Gray — 28 images
wild red raspberry — Rubus idaeus ssp. strigosus (Michaux) Focke — 10 images
wild rye — Elymus virginicus L. — 8 images
wild sarsaparilla — Aralia nudicaulis L. — 19 images
wild sensitive plant — Chamaecrista nictitans (L.) Moench ( = Cassia nictitans L.) — 8 images
wild strawberry — Fragaria virginiana Duchesne — 11 images
willow — Salix sp. (hybrid) — 7 images
willow-leaf dock — Rumex salicifolius Weinm. — 4 images
wine raspberry — Rubus phoenicolasius Maxim. — 8 images
winged bindweed — Polygonum cristatum Engelm. et A. Gray ( = Fallopia cristata (Engelm. et Gray) Holub) — 10 images
winged spindletree, burning bush — Euonymus alata (Thunb.) Sieb. — 16 images
winter creeper — Euonymus fortunei (Turcz.) Hand.-Maz. — 7 images
wintergreen, checkerberry, eastern teaberry — Gaultheria procumbens L. — 21 images
witch-grass — Panicum capillare L. — 6 images
witch-hazel — Hamamelis virginiana L. — 28 images
witch-hobble — Viburnum lantanoides Michaux ( = alnifolium Marsh.) — 12 images
wolf's milk — Euphorbia esula L. — 9 images
wood anemone, wind-flower — Anemone quinquefolia L. — 21 images
wood-betony, Canadian lousewort, common lousewort — Pedicularis canadensis L. — 8 images
wood figwort — Scrophularia nodosa L. — 9 images
woodgrass — Brachyelytrum septentrionale (Babel) G. Tucker ( = aristosum (Michaux) Trel., erectum var. septentrionale Babel) — 5 images
woodland bedstraw — Galium triflorum Michaux — 8 images
woodland bluegrass — Poa nemoralis L. — 5 images
woodland brome or Canada brome — Bromus pubescens Muhl. ex Willd. — 5 images
woodland bulrush — Scirpus verecundus Fern. ( = Trichophorum planifolium (Spreng.) Palla) — 7 images
woodland hawkweed — Hieracium paniculatum L. — 15 images
woodland horsetail — Equisetum sylvaticum L. — 3 images
woodland sunflower — Helianthus divaricatus L. — 15 images
wood lily — Lilium philadelphicum L. — 26 images
woolly beach heather — Hudsonia tomentosa Nutt. — 24 images
woolly mint (M. spicata x M. suaveolens) — Mentha x villosa Hudson — 3 images
wormseed mustard — Erysimum cheiranthoides L. — 4 images
wreath goldenrod, bluestem goldenrod — Solidago caesia L. — 5 images
Wright's panic grass — Dichanthelium wrightianum (Scribner) Freckmann ( = Panicum wrightianum Scribner) — 2 images
yam-leaf clematis — Clematis terniflora DC. ( = dioscoreifolia Levl. et Vaniot) — 4 images
yarrow — Achillea millefolium L. — 9 images
yellow birch — Betula alleghaniensis Britt. ( = lutea Michx.) — 27 images
yellow-eyed-grass — Xyris difformis Chapman — 10 images
yellow foxtail — Setaria glauca (L.) Beauv. — 5 images
yellow-fruited fox sedge — Carex annectens (Bickn.) Bickn. — 6 images
yellow goat's-beard — Tragopogon pratensis L. — 5 images
yellow hornpoppy — Glaucium flavum Crantz — 1 image
yellow iris — Iris pseudacorus L. — 11 images
yellow oak, chinquapin oak — Quercus muehlenbergii Englem. — 1 image
yellow rattle — Rhinanthus minor L. ( = crista-galli L. pro parte) — 2 images
yellow rocket — Barbarea vulgaris R. Br. — 25 images
yellow star-grass — Hypoxis hirsuta (L.) Cov. — 10 images
yellow sweet-clover — Melilotus officinalis (L.) Lam. — 4 images
yellow thistle — Cirsium horridulum Michaux — 8 images
yellow water crowfoot — Ranunculus flabellaris Raf. — 4 images
yellow waterlily, spatterdock — Nuphar variegata Durand ex Clinton — 17 images
yellow wild indigo, horsefly weed — Baptisia tinctoria (L.) R. Br. ex Ait. f. — 10 images
yellow wild lettuce — Lactuca canadensis L. — 19 images
yellowwood — Cladrastis kentukea (Dum.-Cours.) Rudd — 4 images
zigzag goldenrod — Solidago flexicaulis L. — 5 images