Senna roemeriana

Senna roemeriana

Twin-leaf Senna, Twoleaf Senna

Serratula tinctoria

Serratula tinctoria

Centaury, Dyer's Plumeless Saw-wort, Sawwort

Silene chalcedonica

Silene chalcedonica

Burning Love, Dusky Salmon, Flower of Bristol, Jerusalem Cross, Maltese Cross, Nonesuch

Silene vulgaris

Silene vulgaris

Bladder Campion, Maidenstears

Sisyrinchium idahoense

Sisyrinchium idahoense

Idaho Blue-eyed Grass

Solidago canadensis

Solidago canadensis

Canada Goldenrod

Succisa pratensis

Succisa pratensis

Devil's Bit Scabious, Devilsbit

Symphyotrichum lateriflorum

Symphyotrichum lateriflorum

Calico Aster

Symphyotrichum nova-angliae

Symphyotrichum novae-angliae

New England Aster

Symphytum officinale

Symphytum officinale

Comfrey, Common Comfrey

Telekia speciosa

Telekia speciosa

Giant Ox Eye, Giant Oxeye, Heartleaf Oxeye, Yellow Oxeye

Teucrium canadense

Teucrium canadense

American Wood Sage, Canada Germander, Germander

Thalictrum aquilegifolium

Thalictrum aquilegifolium

Columbine Meadow-rue, Meadow Rue

Trifolium pratense

Trifolium pratense Mammoth

'Mammoth'

Mammoth Red Clover, Red Clover

Trifolium pratense

Trifolium pratense Medium

'Medium'

Medium Red Clover, Red Clover

Trifolium repens

Trifolium repens

Dutch Clover, Irish Shamrock, True Irish Shamrock, White Clover

Trifolium repens

Trifolium repens Ladino

'Ladino'

Ladino White Clover, White Clover

Trillium grandiflorum

Trillium grandiflorum

Large White Trillium, White Trillium

Trillium ovatum

Trillium ovatum

Coast Trillium, Pacific Trillium

Trollius europaeus

Trollius europaeus

Common Globeflower

Tussilago farfara

Tussilago farfara

Coltsfoot

Valeriana officinalis

Valeriana officinalis

Common Valerian, Garden Valerian

Veratrum album

Veratrum album

White False Hellebore, White Hellebore

Veratrum nigrum

Veratrum nigrum

Black False Hellebore, False Hellebore

Verbena hastata

Verbena hastata

American Vervain, Blue Vervain, False Vervain, Indian Hyssop, Swamp Verbena, Swamp Vervain, Vervain, Wild Hyssop

Vernonia angustifolia

Vernonia angustifolia

Narrow Leaf Ironweed, Tall Ironweed

Vernonia gigantea

Vernonia gigantea

Giant Ironweed, Tall Ironweed

Vernonia noveboracensis

Vernonia noveboracensis

Ironweed, N.Y. Ironweed, New York Ironweed

Viola sororia

Viola sororia

Butterfly Violet, Common Blue Violet

Xerophyllum tenax

Xerophyllum tenax

Bear Grass, Bear Lily, Elk Grass, Indian Basket Grass, quip-quip, Soap Grass, Squaw Grass, Western Turkeybeard

Yucca filamentosa

Yucca filamentosa

Adam's Needle, True Adams Needle

Yucca glauca

Yucca glauca

Great Plains Yucca, Soapweed , Soapweed Yucca, Soapwell