(Principal flower color in parenthesis)
Achillea millefolium subsp. millefolium (white)
Actaea pachypoda f. pachypoda (white)
Ageratina altissima var. altissima (white)
Ambrosia trifida var. trifida (green-yellow)
Andropogon gerardi var. gerardi (purple)
Anemone virginiana var. alba (white)
Antennaria parlinii subsp. fallax (white)
Arabidopsis lyrata subsp. lyrata (white)
Artemisia ludoviciana subsp. ludoviciana (yellow-white)
Asclepias incarnata subsp. incarnata (red)
Asclepias tuberosa subsp. interior (orange)
Campanula rapunculoides subsp. rapunculoides (blue-purple)
Centaurea stoebe subsp. australis (pink-purple-white)
Cerastium fontanum subsp. vulgare (white)
Chenopodium album var. album (green)
Cichorium intybus subsp. intybus (blue-white)
Circaea lutetiana subsp. canadensis (white)
Cirsium arvense var. arvense (purple)
Cirsium vulgare subsp. vulgare (purple)
Dalea candida var. candida (white)
Dalea purpurea var. purpurea (purple)
Daucus carota subsp. carota (white)
Dianthus armeria subsp. armeria (pink)
Drymocallis arguta subsp. arguta (white)
Elymus hystrix var. hystrix (white)
Epilobium ciliatum subsp. ciliatum (purple)
Erechtites hieraciifolius var. hieraciifolius (white-yellow)
Erigeron annuus subsp. annuus (white)
Fragaria vesca subsp. americana (white)
Frangula alnus subsp. alnus (white)
Geum triflorum var. triflorum (red-white)
Helianthus occidentalis subsp. occidentalis (yellow)
Hesperis matronalis subsp. matronalis (white)
Hieracium umbellatum subsp. umbellatum (yellow)
Houstonia longifolia var. longifolia (white-pink)
Hydrophyllum virginianum var. virginianum (pink-purple)
Hylotelephium spectabile var. spectabile (red)
Hypericum perforatum subsp. perforatum (yellow)
Impatiens balsamina var. balsamina (white-yellow)
Leucanthemum vulgare subsp. vulgare (white)
Liatris pycnostachya var. pycnostachya (pink-red)
Lindernia dubia var. dubia (white-blue-purple)
Maianthemum racemosum subsp. racemosum (white)
Mimulus ringens var. ringens (blue-purple)
Monarda punctata var. villicaulis (yellow)
Myosotis scorpioides subsp. scorpioides (blue)
Ostrya virginiana subsp. virginiana (brown-green)
Persicaria amphibia var. emersa (pink)
Persicaria maculosa var. maculosa (pink)
Phlox divaricata subsp. divaricata (purple-pink)
Phryma leptostachya var. leptostachya (white-pink)
Physostegia virginiana subsp. virginiana (pink)
Plantago major subsp. major (white-green)
Potentilla recta subsp. recta (yellow)
Prunus virginiana var. virginiana (white)
Ranunculus recurvatus var. recurvatus (yellow)
Rudbeckia hirta var. pulcherrima (yellow)
Rudbeckia laciniata var. laciniata (yellow)
Rumex acetosella subsp. acetosella (red)
Scilla siberica subsp. siberica (blue)
Silene latifolia subsp. latifolia (white)
Solidago altissima subsp. altissima (yellow)
Solidago nemoralis subsp. nemoralis (yellow)
Solidago ulmifolia var. ulmifolia (yellow)
Symphyotrichum drummondii var. drummondii (blue-purple-white)
Symphyotrichum ericoides var. ericoides (white)
Symphyotrichum laeve var. laeve (blue-purple)
Tanacetum vulgare subsp. vulgare (yellow)
Teucrium canadense var. canadense (white-purple)
Tragopogon dubius subsp. dubius (yellow)
Urtica dioica subsp. gracilis (white)
Vicia americana var. americana (purple)
Viola pedata var. pedata (purple-blue)
Viola sagittata var. sagittata (blue-purple)
(Principal flower color in parenthesis)
Alder Buckthorn (white)
Allegheny Monkey Flower (blue-purple)
American Burn-weed (white-yellow)
American Germander (white-purple)
American Hop-hornbeam (brown-green)
American Lop-seed (white-pink)
American Lopseed (white-pink)
American Vetch (purple)
American Willowherb (purple)
Annual Fleabane (white)
Arrow-leaved Violet (blue-purple)
Arrowhead Violet (blue-purple)
Arrowleaf Violet (blue-purple)
Aster lisse (blue-purple)
Balsam (white-yellow)
Big Bluestem (purple)
Bird's-foot Violet (purple-blue)
Birdfoot Violet (purple-blue)
Bitter Buttons (yellow)
Black Chokecherry (white)
Black-eyed Susan (yellow)
Bladder Campion (white)
Blisterwort (yellow)
Blue Daisy (blue-white)
Blue Dandelion (blue-white)
Blue Phlox (purple-pink)
Blue Sailors (blue-white)
Blue Weed (blue-white)
Blue Wood Phlox (purple-pink)
Bottlebrush Grass (white)
Breaking Buckthorn (white)
Broad-leaved Plantain (white-green)
Broadleaf Enchanter's Nightshade (white)
Bull Thistle (purple)
Butterfly Milkweed (orange)
Butterfly Stonecrop (red)
Butterfly-weed (orange)
Canada Germander (white-purple)
Canada Thistle (purple)
Canadian Germander (white-purple)
Canadian Thistle (purple)
Chicory (blue-white)
Choke Cherry (white)
Chokeberry (white)
Chokecherry (white)
Ciliate Willowherb (purple)
Coast Willowweed (purple)
Common Chickweed (white)
Common Chokecherry (white)
Common Daisy (white)
Common Enchanter's-nightshade (white)
Common Forget-me-not (blue)
Common Mouse-ear (white)
Common Nettle (white)
Common Plantain (white-green)
Common Sheep Sorrel (red)
Common St. Johnswort (yellow)
Common Tansy (yellow)
Common Thistle (purple)
Common Yarrow (white)
Cow Bitter (yellow)
Creeping Bellflower (blue-purple)
Creeping Thistle (purple)
Cut-leaf Coneflower (yellow)
Cutleaf (yellow)
Daisy Fleabane (white)
Damask Violet (white)
Dame's Rocket (white)
Dame's Violet (white)
Deptford Pink (pink)
Doll's-eyes (white)
Dotted Horsemint (yellow)
Drummond's Aster (blue-purple-white)
Dyer's-weed Goldenrod (yellow)
Eastern Bottlebrush Grass (white)
Eastern Chokecherry (white)
Eastern Daisy Fleabane (white)
Eastern Hop-hornbeam (brown-green)
Eastern Waterleaf (pink-purple)
Elm-leaf Goldenrod (yellow)
Elm-leaved Goldenrod (yellow)
Enchanter's Nightshade (white)
European Alder Buckthorn (white)
European Bellflower (blue-purple)
European Buckthorn (white)
False Dragonhead (pink)
False Pimpernel (white-blue-purple)
False Solomon's Seal (white)
False Spikenard (white)
Fat Hen (green)
Feathery False Lily of the Valley (white)
Few-leaf Sunflower (yellow)
Few-leaved Sunflower (yellow)
Field Daisy (white)
Field Goldenrod (yellow)
Field Sorrel (red)
Field Thistle (purple)
Fireweed (white-yellow)
Fistulous Goat's-beard (yellow)
Forest Phlox (purple-pink)
Fringed Willowherb (purple)
Germander (white-purple)
Giant Ragweed (green-yellow)
Glossy Buckthorn (white)
Glumeless wlldrye (white)
Golden Buttons (yellow)
Golden Glow (yellow)
Gray Goldenrod (yellow)
Great Ragweed (green-yellow)
Greater Sand Goat's-beard (yellow)
Green-headed Coneflower (yellow)
Hairy Heart-leaved Aster (blue-purple-white)
Hairy Willowherb (purple)
Heartsease (pink)
Heath Aster (white)
Hillside Strawberry (white)
Hooked Buttercup (yellow)
Hooked Crowfoot (yellow)
Hop Hornbeam (brown-green)
Horse-cane (green-yellow)
Horsemint (yellow)
Horseweed (green-yellow)
Ice Plant (red)
Ironwood (brown-green)
John's-cabbage (pink-purple)
Klamath-weed (yellow)
Lady's-thumb (pink)
Lamb's Quarters (green)
Lamb's-quarters (green)
Large False Solomon's-seal (white)
Late Goldenrod (yellow)
Long-leaf Bluets (white-pink)
Longleaf Summer Bluet (white-pink)
Longroot Smartweed (pink)
Lopseed (white-pink)
Louisiana Sage-wort (yellow-white)
Lyrate Rock-cress (white)
Lyre-leaved Rock Cress (white)
Marguerite (white)
Milfoil (white)
Moist Bank Pimpernel (white-blue-purple)
Monkey Flower (blue-purple)
Mother-of-the-evening (white)
Mouse-ear Chickweed (white)
Naked-stemmed Sunflower (yellow)
Narrow-leaf Hawkweed (yellow)
Narrow-leaved Hawkweed (yellow)
Night-scented Gilliflower (white)
Northern Hawkweed (yellow)
Obedience (pink)
Obedient Plant (pink)
Old Man's Whiskers (red-white)
Old-field Goldenrod (yellow)
Orange Milkweed (orange)
Ox-eye Daisy (white)
Parlin's Pussytoes (white)
Perennial Thistle (purple)
Pigweed (green)
Pilewort (white-yellow)
Plainleaf Pussytoes (white)
Plantain (white-green)
Plantain Pussy-toes (white)
Prairie Blazing Star (pink-red)
Prairie Cinquefoil (white)
Prairie Smoke (red-white)
Prickly Thistle (purple)
Purple Prairie Clover (purple)
Purple Prairie-clover (purple)
Purple Vetch (purple)
Purple-Leaved Willow-Herb (purple)
Queen Anne's Lace (white)
Queen's Gilliflower (white)
Rampion Bellflower (blue-purple)
Red Chokecherry (white)
Red Sorrel (red)
Rocket (white)
Rose Milkflower (red)
Rose Milkweed (red)
Rough Crowfoot (yellow)
Rough-fruited Cinquefoil (yellow)
Rover Bellflower (blue-purple)
Sand Cress (white)
Shawnee-salad (pink-purple)
Sheep Sorrel (red)
Showy Stonecrop (red)
Siberian Squill (blue)
Silver Sage (yellow-white)
Silver Wormwood (yellow-white)
Slender White Prairie-clover (white)
Small-flowered Thistle (purple)
Smooth Aster (blue-purple)
Smooth Blue Aster (blue-purple)
Smooth-leaved Aster (blue-purple)
Solomon's-plume (white)
Spear Thistle (purple)
Spotted Bee Balm (yellow)
Spotted Beebalm (yellow)
Spotted Horsemint (yellow)
Spotted Knapweed (pink-purple-white)
Spotted Ladysthumb (pink)
Spotted Snapweed (white-yellow)
Squarrose White Aster (white)
St. John's-wort (yellow)
Starweed (white)
Stinging Nettle (white)
Sulphur Cinquefoil (yellow)
Sulphur Five-fingers (yellow)
Swamp Milkweed (red)
Swamp Silkweed (red)
Swamp Smartweed (pink)
Sweet Rocket (white)
Tall Anemone (white)
Tall Cinquefoil (white)
Tall Coneflower (yellow)
Tall Goldenrod (yellow)
Tall Potentilla (white)
Tall Thimbleweed (white)
Tansy (yellow)
Thick-spike Blazing-star (pink-red)
Thick-spike Gay-feather (pink-red)
Thimbleweed (white)
Thin-leaved Wild Strawberry (white)
Three-sisters (red-white)
Torchflower (red-white)
Touch-Me-Not (white-yellow)
True Forget-me-not (blue)
Turkey-foot (purple)
Violet Prairie-clover (purple)
Virginia Waterleaf (pink-purple)
Water Forget-me-not (blue)
Water Heart's-ease (pink)
Water Knotweed (pink)
Water Scorpion Grass (blue)
Water Smartweed (pink)
Western Chokecherry (white)
Western Goat's Beard (yellow)
Western Mugwort (yellow-white)
Western Sunflower (yellow)
White Baneberry (white)
White Campion (white)
White Cockle (white)
White Goosefoot (green)
White Heath Aster (white)
White Prairie Aster (white)
White Prairie Clover (white)
White Sage (yellow-white)
White Snakeroot (white)
Wild Blue Phlox (purple-pink)
Wild Carrot (white)
Wild Golden Glow (yellow)
Wild Strawberry (white)
Wild Sweet-William (purple-pink)
Wood Sage (white-purple)
Woodland Phlox (purple-pink)
Woodland Strawberry (white)
Yarrow (white)
Yellow Goat's Beard (yellow)
Yellow Salsify (yellow)
Yellowseed False-pimpernel (white-blue-purple)