Of the Nightshade family (Solanaceae), the black nightshade (Solanum nigrum).

Black Nightshade

Of the Nightshade family (Solanaceae), the black nightshade (Solanum nigrum).

Of the Nightshade family (Solanaceae), the leaf and flower of the bittersweet nightshade (Solanum Dulcamara).

Bittersweet Nightshade

Of the Nightshade family (Solanaceae), the leaf and flower of the bittersweet nightshade (Solanum Dulcamara).

Of the Nightshade family (Solanaceae), the leaf and flower of the Virginia ground cherry (Physalis virginiana).

Virginia Ground Cherry

Of the Nightshade family (Solanaceae), the leaf and flower of the Virginia ground cherry (Physalis virginiana).

Of the Nightshade family (Solanaceae), the purple thorn apple (Datura Tatula).

Purple Thorn Apple

Of the Nightshade family (Solanaceae), the purple thorn apple (Datura Tatula).

Of the Figwort family (Scrophulariaceae), the great mullein (Verbascum Thapsus).

Great Mullein

Of the Figwort family (Scrophulariaceae), the great mullein (Verbascum Thapsus).

Of the Figwort family (Scrophulariaceae), the moth mullein (Verbascum Blattaria).

Moth Mullein

Of the Figwort family (Scrophulariaceae), the moth mullein (Verbascum Blattaria).

Of the Figwort family (Scrophulariaceae), the toad-flax (Linaria vulgaris).

Toad Flax

Of the Figwort family (Scrophulariaceae), the toad-flax (Linaria vulgaris).

Of the Figwort family (Scrophulariaceae), the blue toad flax (Linaria Canadensis).

Blue Toad Flax

Of the Figwort family (Scrophulariaceae), the blue toad flax (Linaria Canadensis).

Of the Figwort family (Scrophulariaceae), the false pimpernel (Ilysanthes dubia).

False Pimpernel

Of the Figwort family (Scrophulariaceae), the false pimpernel (Ilysanthes dubia).

Of the Figwort family (Scrophulariaceae), the pentstemon (Penstemon hirsutus).

Pentstemon

Of the Figwort family (Scrophulariaceae), the pentstemon (Penstemon hirsutus).

Of the Figwort family (Scrophulariaceae), the common speedwell (Veronica officinalis).

Common Speedwell

Of the Figwort family (Scrophulariaceae), the common speedwell (Veronica officinalis).

Of the Figwort family (Scrophulariaceae), the Alpine speedwell (Veronica alpina).

Alpine Speedwell

Of the Figwort family (Scrophulariaceae), the Alpine speedwell (Veronica alpina).

Of the Figwort family (Scrophulariaceae), the thyme-leaved speedwell (Veronica serpyllifolia).

Thyme-Leaved Speedwell

Of the Figwort family (Scrophulariaceae), the thyme-leaved speedwell (Veronica serpyllifolia).

Of the Figwort family (Scrophulariaceae), the American brooklime (Veronica americana).

American Brooklime

Of the Figwort family (Scrophulariaceae), the American brooklime (Veronica americana).

Of the Figwort family (Scrophulariaceae), the culver's root (Veronica virginica).

Culver's Root

Of the Figwort family (Scrophulariaceae), the culver's root (Veronica virginica).

Of the Figwort family (Scrophulariaceae), the downy false foxglove (Gerardia flava).

Downy False Foxglove

Of the Figwort family (Scrophulariaceae), the downy false foxglove (Gerardia flava).

Of the Figwort family (Scrophulariaceae), the fern-leaved false foxglove (Gerardia pedicularia).

Fern-Leaved False Foxglove

Of the Figwort family (Scrophulariaceae), the fern-leaved false foxglove (Gerardia pedicularia).

Of the Figwort family (Scrophulariaceae), the sea-side gerardia (Gerardia maritima).

Sea-Side Gerardia

Of the Figwort family (Scrophulariaceae), the sea-side gerardia (Gerardia maritima).

Of the Figwort family (Scrophulariaceae), the purple gerardia (Gerardia purpurea).

Purple Gerardia

Of the Figwort family (Scrophulariaceae), the purple gerardia (Gerardia purpurea).

Of the Figwort family (Scrophulariaceae), the slender gerardia (Gerardia tenuifolia).

Slender Gerardia

Of the Figwort family (Scrophulariaceae), the slender gerardia (Gerardia tenuifolia).

Of the Figwort family (Scrophulariaceae), the painted cup (Castilleja coccinea).

Painted Cup

Of the Figwort family (Scrophulariaceae), the painted cup (Castilleja coccinea).

Of the Figwort family (Scrophulariaceae), Castilleja pallida var. septentrionalis.

Castilleja

Of the Figwort family (Scrophulariaceae), Castilleja pallida var. septentrionalis.

Of the Figwort family (Scrophulariaceae), the yellow rattle (Rhinanthus Crista-Galli).

Yellow Rattle

Of the Figwort family (Scrophulariaceae), the yellow rattle (Rhinanthus Crista-Galli).

Of the Figwort family (Scrophulariaceae), the eyebright (Euphrasia americana).

Eyebright

Of the Figwort family (Scrophulariaceae), the eyebright (Euphrasia americana).

Of the Figwort family (Scrophulariaceae), the lousewort (Pedicularis canadensis).

Lousewort

Of the Figwort family (Scrophulariaceae), the lousewort (Pedicularis canadensis).

Of the Figwort family (Scrophulariaceae), Pedicularis lanceolata.

Pedicularis lanceolata

Of the Figwort family (Scrophulariaceae), Pedicularis lanceolata.

Of the Figwort family (Scrophulariaceae), cow-wheat (Melampyrum lineare).

Cow-Wheat

Of the Figwort family (Scrophulariaceae), cow-wheat (Melampyrum lineare).

Of the Broom-rape family (Orobanchaceae), the squawroot (Conopholis americana).

Squawroot

Of the Broom-rape family (Orobanchaceae), the squawroot (Conopholis americana).

Of the Broom-rape family (Orobanchaceae), the beech-drops (Epifagus virginiana).

Beech-Drops

Of the Broom-rape family (Orobanchaceae), the beech-drops (Epifagus virginiana).

Of the Broom-rape family (Orobanchaceae), the naked broom-rape (Orobanche uniflora).

Naked Broom-Rape

Of the Broom-rape family (Orobanchaceae), the naked broom-rape (Orobanche uniflora).

Of the plantain family (Plantaginaceae), the blackseed plantain (Plantago Rugelii).

Blackseed Plantain

Of the plantain family (Plantaginaceae), the blackseed plantain (Plantago Rugelii).

Of the plantain family (Plantaginaceae), the English plantain (Plantago lanceolata).

English Plantain

Of the plantain family (Plantaginaceae), the English plantain (Plantago lanceolata).

Of the plantain family (Plantaginaceae), the common plantain (Plantago major).

Common Plantain

Of the plantain family (Plantaginaceae), the common plantain (Plantago major).

Of the Madder family (Rubiaceae), the large houstonia (Houstonia purpurea).

Large Houstonia

Of the Madder family (Rubiaceae), the large houstonia (Houstonia purpurea).

Of the Madder family (Rubiaceae), the bluets (Houstonia caerulea).

Houstonia Bluets

Of the Madder family (Rubiaceae), the bluets (Houstonia caerulea).

Of the Madder family (Rubiaceae), the Northern bedstraw (Galium boreale).

Northern Bedstraw

Of the Madder family (Rubiaceae), the Northern bedstraw (Galium boreale).

Of the Madder family (Rubiaceae), the yellow bedstraw (Galium verum).

Yellow Bedstraw

Of the Madder family (Rubiaceae), the yellow bedstraw (Galium verum).

Of the Madder family (Rubiaceae), cleavers (Galium Aparine).

Cleavers

Of the Madder family (Rubiaceae), cleavers (Galium Aparine).

Of the Madder family (Rubiaceae), the partridgeberry (Mitchella repens).

Partridgeberry

Of the Madder family (Rubiaceae), the partridgeberry (Mitchella repens).

Of the Madder family (Rubiaceae), the small bedstraw (Galium trifidum).

Small Bedstraw

Of the Madder family (Rubiaceae), the small bedstraw (Galium trifidum).

Of the Madder family (Rubiaceae), the rough bedstraw (Galium asprellum).

Rough Bedstraw

Of the Madder family (Rubiaceae), the rough bedstraw (Galium asprellum).

Of the Madder family (Rubiaceae), the licorice bedstraw (Galium circaezans).

Licorice Bedstraw

Of the Madder family (Rubiaceae), the licorice bedstraw (Galium circaezans).

Of the Honeysuckle family (Caprifoliaceae), the red-berried elder (Sambucus racemosa).

Red-Berried Elder

Of the Honeysuckle family (Caprifoliaceae), the red-berried elder (Sambucus racemosa).

Of the Honeysuckle family (Caprifoliaceae), the feverwort (Triosteum perfoliatum).

Feverwort

Of the Honeysuckle family (Caprifoliaceae), the feverwort (Triosteum perfoliatum).

Of the Honeysuckle family (Caprifoliaceae), the hobble-bush (Viburnum alnifolium).

Hobble-Bush

Of the Honeysuckle family (Caprifoliaceae), the hobble-bush (Viburnum alnifolium).

Of the Honeysuckle family (Caprifoliaceae), the Indian currant (Symphoricarpos orbiculatus) and the leaves of elder (Sambucus canadensis).

Indian Currant and Elder Leaves

Of the Honeysuckle family (Caprifoliaceae), the Indian currant (Symphoricarpos orbiculatus) and the…

Of the Honeysuckle family (Caprifoliaceae), the fly-honeysuckle (Lonicera canadensis).

Fly-Honeysuckle

Of the Honeysuckle family (Caprifoliaceae), the fly-honeysuckle (Lonicera canadensis).

Of the Honeysuckle family (Caprifoliaceae), the trumpet honeysuckle (Lonicera sempervirens).

Trumpet Honeysuckle

Of the Honeysuckle family (Caprifoliaceae), the trumpet honeysuckle (Lonicera sempervirens).

Of the Honeysuckle family (Caprifoliaceae), the bush honeysuckle (Diervilla Lonicera).

Bush Honeysuckle

Of the Honeysuckle family (Caprifoliaceae), the bush honeysuckle (Diervilla Lonicera).

Of the Valerian family (Valerianaceae), the swamp valerian (Valeriana uliginosa).

Swamp Valerian

Of the Valerian family (Valerianaceae), the swamp valerian (Valeriana uliginosa).

Of the Valerian family (Valerianaceae), the corn salad (Valerianella Woodsiana).

Valerianella Woodsiana

Of the Valerian family (Valerianaceae), the corn salad (Valerianella Woodsiana).

Of the Gourd family (Cucurbitaceae), the climbing wild cucumber (Echinocystis lobata).

Climbing Wild Cucumber

Of the Gourd family (Cucurbitaceae), the climbing wild cucumber (Echinocystis lobata).

Of the Gourd family (Cucurbitaceae), the leaf of the one-seeded bur-cucumber (Sicyos angulatus).

One-Seeded Bur-Cucumber

Of the Gourd family (Cucurbitaceae), the leaf of the one-seeded bur-cucumber (Sicyos angulatus).

Of the Bellflower family (Campanulaceae), the tall bellflower (Campanula americana).

Tall Bellflower

Of the Bellflower family (Campanulaceae), the tall bellflower (Campanula americana).

Of the Bellflower family (Campanulaceae), Venus's looking-glass (Specularia perfoliata).

Venus's Looking-Glass

Of the Bellflower family (Campanulaceae), Venus's looking-glass (Specularia perfoliata).

Of the Bellflower family (Campanulaceae), the marsh bellflower (Campanula aparinoides).

Marsh Bellflower

Of the Bellflower family (Campanulaceae), the marsh bellflower (Campanula aparinoides).

Of the Bellflower family (Campanulaceae), the bellflower (Campanula rapunculoides).

Bellflower

Of the Bellflower family (Campanulaceae), the bellflower (Campanula rapunculoides).

Of the Bellflower family (Campanulaceae), the harebell (Campanula rotundifolia).

Harebell

Of the Bellflower family (Campanulaceae), the harebell (Campanula rotundifolia).

Of the Lobelia family (Lobeliaceae), the cardinal flower (Lobelia cardinalis).

Cardinal Flower

Of the Lobelia family (Lobeliaceae), the cardinal flower (Lobelia cardinalis).

Of the Lobelia family (Lobeliaceae), Indian tobacco (Lobelia inflata).

Indian Tobacco

Of the Lobelia family (Lobeliaceae), Indian tobacco (Lobelia inflata).