85

Swamp Milkweed, 91

Swamp Rose, 52

Swamp Valerian, 111

Swamp White Oak, 23

Sweet Birch, 22

Sweetbrier, 52

Sweet Cicely, 82

Sweet Fern, 20

Sweet Flag, 8

Sweet Gale, 21

Sweet Gale Family, 20

Sweet White Violet, 76

Sweet William, 34, 92

Sweet William Catchfly, 34

Sycamore, 51

Symphoricarpos, 110, 111

Symphytum, 93

Symplocarpus, 8

Synthyris, 102

Syringa, 88


Taenidia, 81

Tall Dock, 26

Tamarack, 1

Tanacetum, 119

Tansy, 119

Tansy Mustard, 43

Taraxacum, 115

Taxaceae, 2

Taxus, 2

Tear-thumb, 28

Teasel, 112

Teasel Family, 112

Tephrosia, 60

Teucrium, 97

Thalictrum, 39

Thaspium, 81

Thistle, 117, 118

Thistle, Canada, 118

Thistle, Cotton, 118

Thistle, Globe, 117

Thistle, Milk, 117

Thistle, Russian, 28

Thistle, Sow, 117

Thlaspi, 46

Thorn-apple, 100

Thorny Amaranth, 30

Three-seeded Mercury, 66

Three-square, 7

Thuja, 1

Thymelaeaceae, 77

Thyme, Wild, 97

Thymus, 97

Tiarella, 51

Tickseed, 123, 124

Tickseed Sunflower, 124

Tick Trefoil, 62, 63

Tilia, 72

Tiliaceae, 72

Timothy, 4

Tipularia, 16

Toad-flax, 24, 103

Tobacco, Indian, 113

Tobacco, Wild, 101

Tofieldia, 14

Toothwort, 44

Touch-me-not, 71

Touch-me-not Family, 71

Tradescantia, 9

Tragopogon, 115

Trailing Arbutus, 85

Tree of Heaven, 65

Trientalis, 87

Trifolium, 60, 61

Triglochin, 3

Trillium, 12

Triosteum, 109

Trollius, 36

Tsuga, 1

Tulip Tree, 40

Tumble Weed, 30

Turk's-cap Lily, 12

Turtlehead, 104

Tussilago, 122

Tway-blade, 17

Twig Rush, 8

Twin-leaf, 40

Twin Flower, 109

Twisted-stalk, 11

Typha, 2

Typhaceae, 2


Ulmus, 24

Umbelliferae, 80

Umbrella-wort, 31

Upland Boneset, 122

Urtica, 24

Urticaceae, 23

Utricularia, 106

Uvularia, 12


Vaccinium, 85-87

Valerian, 111

Valeriana, 111

Valerianaceae, 111

Valerianella, 111

Valerian Family, 111

Valerian, Greek, 92

Vallisneria, 3

Velvet Leaf, 72

Venus' Looking Glass, 112

Verbascum, 101

Verbena, 99-100

Verbenaceae, 99

Verbena Family, 99

Vernonia, 122

Veronica, 104, 105

Vervain, 99, 100

Vetch, 59

Vetchling, 59

Vetch, Milk, 60

Viburnum, 111

Vicia, 59

Vinca, 90

Viola, 75, 76

Violaceae, 75

Violet, 75, 76

Violet Family, 75

Violet, Green, 75

Virginia Creeper, 71

Virginia Mallow, 73

Virginia Snakeroot, 25

Virgin's Bower, 35

Vitaceae, 71

Vitis, 72


Wahoo, 69

Waldsteinia, 55

Walnut, Black, 21

Walnut Family, 21

Water Arum, 9

Water Cress, 45

Water Crowfoot, 37

Water Dock, 26

Water Hemlock, 82

Water Hemp, 30

Water Hoarhound, 95

Water-leaf, 93

Water-leaf Family, 93

Water Lily, 35

Water Lily Family, 35

Water Lobelia, 113

Water Loosestrife, 77

Water Marigold, 123

Water Milfoil, 79

Water Milfoil Family, 79

Water Parsnip, 81

Water Pennywort, 80

Water Pimpernel, 87

Water Plantain, 3

Water Plantain Family, 3

Water Purslane, 78

Water Shield, 35

Water Smartweed, 27, 28

Water Speedwell, 105

Water Starwort, 68

Water Starwort Family, 68

Water-weed, 3

Water Willow, 107

Waterwort, 74

Waterwort Family, 74

Weeping Willow, 20

White Ash, 88

White Campion, 33

White Cedar, 1

White Clover, 61

White Elm, 24

White Fringed Orchis, 19

White Ground Cherry, 101

White Lady's Slipper, 18

White Mulberry, 24

White Oak, 23

White Pine, 1

White Poplar, 19

White Snakeroot, 122

White Spruce, 1

White Sweet Clover, 61

Whitlow Grass, 42, 46

Whorled Pogonia, 18

Wild Bean, 58

Wild Bergamot, 96

Wild Camomile, 130

Wild Carrot, 82

Wild Chives, 13

Wild Columbine, 36

Wild Comfrey, 94

Wild Crab, 54

Wild Cucumber, 112

Wild Flax, 63

Wild Geranium, 64

Wild Ginger, 25

Wild Gromwell, 94

Wild Indigo, 61

Wild Leek, 13

Wild Lettuce, 115, 116

Wild Lily of the Valley, 13

Wild Mint, 98

Wild Onion, 13

Wild Pansy, 76

Wild Parsnip, 81

Wild Pea, 59

Wild Plum, 54

Wild Potato Vine, 92

Wild Radish, 44, 45

Wild Rice, 5

Wild Rose, 52

Wild Rye, 6

Wild Sarsaparilla, 80

Wild Senna, 60

Wild Thyme, 97

Wild Tobacco, 101

Wild Yam, 14

Willow, 20

Willow Family, 19

Willow Herb, 79

Willow, Water, 107

Winter Cress, 44

Wintergreen, 86

Wintergreen, Flowering, 65

Wintergreen, One-flowered, 85

Wintergreen, Spotted, 85

Witch Grass, 5

Witch Hazel, 51

Witch Hazel Family, 51

Withe-rod, 111

Wolfberry, 110

Wolffia, 9

Wood Anemone, 38

Wood-grass, 6

Wood Lily, 12

Wood Nettle, 24

Wood Rush, 10

Wood Sage, 97

Wood Sorrel, 64

Wood Sorrel Family, 64

Wood Strawberry, 56

Wood Violet, 76

Wormseed, 29

Worm-seed Mustard, 43

Wormwood, 119


Xanthium, 114

Xyridaceae, 9

Xyris, 9


Yam Family, 14

Yam, Wild, 14

Yard Grass, 6

Yarrow, 130

Yellow Alyssum, 42, 46

Yellow Birch, 21

Yellow Cress, 43

Yellow-eyed Grass, 9

Yellow-eyed Grass Family, 9

Yellow Foxtail, 4

Yellow Fringed Orchis, 19

Yellow Ironweed, 128

Yellow Lady's Slipper, 18

Yellow Lily, 12

Yellow Mignonette, 48

Yellow Monkey Flower, 102

Yellow Oak, 23

Yellow Sweet Clover, 61

Yellow Violet, 76

Yellow Willow, 20

Yew Family, 2


Zannichellia, 2

Zanthoxylum, 65

Zizania, 5

Zizia, 81