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).

Of the Lobelia family (Lobeliaceae), the great lobelia (Lobelia syphilitica).

Great Lobelia

Of the Lobelia family (Lobeliaceae), the great lobelia (Lobelia syphilitica).

Of the Lobelia family (Lobeliaceae), the pale spiked lobelia (Lobelia spicata).

Pale Spiked Lobelia

Of the Lobelia family (Lobeliaceae), the pale spiked lobelia (Lobelia spicata).

Of the Lobelia family (Lobeliaceae), the water lobelia (Lobelia Dortmanna).

Water Lobelia

Of the Lobelia family (Lobeliaceae), the water lobelia (Lobelia Dortmanna).

Of the Lobelia family (Lobeliaceae), the downy lobelia (Lobelia puberula).

Downy Lobelia

Of the Lobelia family (Lobeliaceae), the downy lobelia (Lobelia puberula).

Of the Composite family (Compositae), the New York ironweed (Vernonia Noveboracensis).

New York Ironweed

Of the Composite family (Compositae), the New York ironweed (Vernonia Noveboracensis).

Of the Composite family (Compositae): left, white snakeroot (Eupatorium urticaefolium); right, boneset (Eupatorium perfoliatum).

White Snakeroot and Boneset

Of the Composite family (Compositae): left, white snakeroot (Eupatorium urticaefolium); right, boneset…

Of the Composite family (Compositae), the boneset (Mikania scandens).

Boneset

Of the Composite family (Compositae), the boneset (Mikania scandens).

Of the Composite family (Compositae), the tall blazing star (Liatris scariosa).

Tall Blazing Star

Of the Composite family (Compositae), the tall blazing star (Liatris scariosa).

Of the Composite family (Compositae), Joe-Pye-weed (Eupatorium purpureum)

Joe-Pye-Weed

Of the Composite family (Compositae), Joe-Pye-weed (Eupatorium purpureum)

Of the Composite family (Compositae), the curved-leaved golden aster (Chrysopsis falcata).

Curved-Leaved Golden Aster

Of the Composite family (Compositae), the curved-leaved golden aster (Chrysopsis falcata).

Of the Composite family (Compositae), the golden aster (Chrysopsis Mariana).

Golden Aster

Of the Composite family (Compositae), the golden aster (Chrysopsis Mariana).

Of the Composite family (Compositae), the grass-leaved golden aster (Chrysopsis graminifolia).

Grass-Leaved Golden Aster

Of the Composite family (Compositae), the grass-leaved golden aster (Chrysopsis graminifolia).

Of the Composite family (Compositae), the blue-stemmed golden-rod (Solidago caesia).

Blue-Stemmed Golden-Rod

Of the Composite family (Compositae), the blue-stemmed golden-rod (Solidago caesia).

Of the Composite family (Compositae), the leaf of the rough-stemmed golden-rod (Solidago rugosa).

Rough-Stemmed Golden-Rod

Of the Composite family (Compositae), the leaf of the rough-stemmed golden-rod (Solidago rugosa).

Of the Composite family (Compositae), the leaf of the late golden-rod (Solidago serotina).

Late Golden-Rod

Of the Composite family (Compositae), the leaf of the late golden-rod (Solidago serotina).

Of the Composite family (Compositae), the seaside golden-rod (Solidago sempervirens).

Seaside Golden-Rod

Of the Composite family (Compositae), the seaside golden-rod (Solidago sempervirens).

Of the Composite family (Compositae), the late golden-rod (Solidago serotina).

Late Golden-Rod

Of the Composite family (Compositae), the late golden-rod (Solidago serotina).

Of the Composite family (Compositae), the Canada golden-rod (Solidago Canadensis).

Canada Golden-Rod

Of the Composite family (Compositae), the Canada golden-rod (Solidago Canadensis).

Of the Composite family (Compositae), the lance-leaved golden-rod (Solidago graminifolia).

Lance-Leaved Golden-Rod

Of the Composite family (Compositae), the lance-leaved golden-rod (Solidago graminifolia).

Of the Composite family (Compositae), the showy aster (Aster spectabilis).

Showy Aster

Of the Composite family (Compositae), the showy aster (Aster spectabilis).

Of the Composite family (Compositae), the rough-leaved aster (Aster radula).

Rough-Leaved Aster

Of the Composite family (Compositae), the rough-leaved aster (Aster radula).

Of the Composite family (Compositae), the heart-leaved aster (Aster cordifolius).

Heart-Leaved Aster

Of the Composite family (Compositae), the heart-leaved aster (Aster cordifolius).

Of the Composite family (Compositae), the heath aster (Aster ericoides).

Heath Aster

Of the Composite family (Compositae), the heath aster (Aster ericoides).

Of the Composite family (Compositae): left, New York aster (Aster Novi-Belgii); right, Tradescant's aster (Aster Tradescanti).

New York Aster and Tradescant's Aster

Of the Composite family (Compositae): left, New York aster (Aster Novi-Belgii); right, Tradescant's…

Of the Composite family (Compositae), the purple-stemmed aster (Aster puniceus).

Purple-Stemmed Aster

Of the Composite family (Compositae), the purple-stemmed aster (Aster puniceus).

Of the Composite family (Compositae), the sharp-leaved wood aster (Aster acuminatus).

Sharp-Leaved Wood Aster

Of the Composite family (Compositae), the sharp-leaved wood aster (Aster acuminatus).

Of the Composite family (Compositae), horseweed (Erigeron Canadensis).

Horseweed

Of the Composite family (Compositae), horseweed (Erigeron Canadensis).

Of the Composite family (Compositae), the common fleabane (Erigeron philadelphicus).

Common Fleabane

Of the Composite family (Compositae), the common fleabane (Erigeron philadelphicus).

Of the Composite family (Compositae), the daisy fleabane (Erigeron ramosus).

Daisy Fleabane

Of the Composite family (Compositae), the daisy fleabane (Erigeron ramosus).