85Swamp Milkweed,91Swamp Rose,52Swamp Valerian,111Swamp White Oak,23Sweet Birch,22Sweetbrier,52Sweet Cicely,82Sweet Fern,20Sweet Flag,8Sweet Gale,21Sweet Gale Family,20Sweet White Violet,76Sweet William,34,92Sweet William Catchfly,34Sycamore,51Symphoricarpos,110,111Symphytum,93Symplocarpus,8Synthyris,102Syringa,88Taenidia,81Tall Dock,26Tamarack,1Tanacetum,119Tansy,119Tansy Mustard,43Taraxacum,115Taxaceae,2Taxus,2Tear-thumb,28Teasel,112Teasel Family,112Tephrosia,60Teucrium,97Thalictrum,39Thaspium,81Thistle,117,118Thistle, Canada,118Thistle, Cotton,118Thistle, Globe,117Thistle, Milk,117Thistle, Russian,28Thistle, Sow,117Thlaspi,46Thorn-apple,100Thorny Amaranth,30Three-seeded Mercury,66Three-square,7Thuja,1Thymelaeaceae,77Thyme, Wild,97Thymus,97Tiarella,51Tickseed,123,124Tickseed Sunflower,124Tick Trefoil,62,63Tilia,72Tiliaceae,72Timothy,4Tipularia,16Toad-flax,24,103Tobacco, Indian,113Tobacco, Wild,101Tofieldia,14Toothwort,44Touch-me-not,71Touch-me-not Family,71Tradescantia,9Tragopogon,115Trailing Arbutus,85Tree of Heaven,65Trientalis,87Trifolium,60,61Triglochin,3Trillium,12Triosteum,109Trollius,36Tsuga,1Tulip Tree,40Tumble Weed,30Turk's-cap Lily,12Turtlehead,104Tussilago,122Tway-blade,17Twig Rush,8Twin-leaf,40Twin Flower,109Twisted-stalk,11Typha,2Typhaceae,2Ulmus,24Umbelliferae,80Umbrella-wort,31Upland Boneset,122Urtica,24Urticaceae,23Utricularia,106Uvularia,12Vaccinium,85-87Valerian,111Valeriana,111Valerianaceae,111Valerianella,111Valerian Family,111Valerian, Greek,92Vallisneria,3Velvet Leaf,72Venus' Looking Glass,112Verbascum,101Verbena,99-100Verbenaceae,99Verbena Family,99Vernonia,122Veronica,104,105Vervain,99,100Vetch,59Vetchling,59Vetch, Milk,60Viburnum,111Vicia,59Vinca,90Viola,75,76Violaceae,75Violet,75,76Violet Family,75Violet, Green,75Virginia Creeper,71Virginia Mallow,73Virginia Snakeroot,25Virgin's Bower,35Vitaceae,71Vitis,72Wahoo,69Waldsteinia,55Walnut, Black,21Walnut Family,21Water Arum,9Water Cress,45Water Crowfoot,37Water Dock,26Water Hemlock,82Water Hemp,30Water Hoarhound,95Water-leaf,93Water-leaf Family,93Water Lily,35Water Lily Family,35Water Lobelia,113Water Loosestrife,77Water Marigold,123Water Milfoil,79Water Milfoil Family,79Water Parsnip,81Water Pennywort,80Water Pimpernel,87Water Plantain,3Water Plantain Family,3Water Purslane,78Water Shield,35Water Smartweed,27,28Water Speedwell,105Water Starwort,68Water Starwort Family,68Water-weed,3Water Willow,107Waterwort,74Waterwort Family,74Weeping Willow,20White Ash,88White Campion,33White Cedar,1White Clover,61White Elm,24White Fringed Orchis,19White Ground Cherry,101White Lady's Slipper,18White Mulberry,24White Oak,23White Pine,1White Poplar,19White Snakeroot,122White Spruce,1White Sweet Clover,61Whitlow Grass,42,46Whorled Pogonia,18Wild Bean,58Wild Bergamot,96Wild Camomile,130Wild Carrot,82Wild Chives,13Wild Columbine,36Wild Comfrey,94Wild Crab,54Wild Cucumber,112Wild Flax,63Wild Geranium,64Wild Ginger,25Wild Gromwell,94Wild Indigo,61Wild Leek,13Wild Lettuce,115,116Wild Lily of the Valley,13Wild Mint,98Wild Onion,13Wild Pansy,76Wild Parsnip,81Wild Pea,59Wild Plum,54Wild Potato Vine,92Wild Radish,44,45Wild Rice,5Wild Rose,52Wild Rye,6Wild Sarsaparilla,80Wild Senna,60Wild Thyme,97Wild Tobacco,101Wild Yam,14Willow,20Willow Family,19Willow Herb,79Willow, Water,107Winter Cress,44Wintergreen,86Wintergreen, Flowering,65Wintergreen, One-flowered,85Wintergreen, Spotted,85Witch Grass,5Witch Hazel,51Witch Hazel Family,51Withe-rod,111Wolfberry,110Wolffia,9Wood Anemone,38Wood-grass,6Wood Lily,12Wood Nettle,24Wood Rush,10Wood Sage,97Wood Sorrel,64Wood Sorrel Family,64Wood Strawberry,56Wood Violet,76Wormseed,29Worm-seed Mustard,43Wormwood,119Xanthium,114Xyridaceae,9Xyris,9Yam Family,14Yam, Wild,14Yard Grass,6Yarrow,130Yellow Alyssum,42,46Yellow Birch,21Yellow Cress,43Yellow-eyed Grass,9Yellow-eyed Grass Family,9Yellow Foxtail,4Yellow Fringed Orchis,19Yellow Ironweed,128Yellow Lady's Slipper,18Yellow Lily,12Yellow Mignonette,48Yellow Monkey Flower,102Yellow Oak,23Yellow Sweet Clover,61Yellow Violet,76Yellow Willow,20Yew Family,2Zannichellia,2Zanthoxylum,65Zizania,5Zizia,81