-156- 



Streptopus 1 1 



Striped Maple 70 



Strophostyles 58 



Stylophorum 41 



Sugar Maple 70 



Sumach 68, 69 



Summer Grape 72 



Summer Savory 97 



Sundew 48 



Sundew Family 48 



Sundrops 78 



Sunflower 128-130 



Sunflower, Tickseed 124 



Swamp Birch 22 



Swamp Currant 49 



Swamp Dewberry 53 



Swamp Laurel 85 



Swamp Milkweed 91 



Swamp Rose 52 



Swamp Valerian in 



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 I IO,1 1 1 



Symphytum 93 



Symplocarpus 8 



Synthyris 102 



Syringa 88 



Taenidia 81 



Tall Dock , 26 



Tamarack I 



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 1 1 7, 1 18 



Thistle, Canada 1 18 



Thistle, Cotton 1 18 



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 i 



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 



Trienjalis 87 



Trifolium 60, 6 1 



Triglochin 3 



Trillium 12 



Trjosteum 109 



Trollius 36 



Tsuga i 



Tulip Tree 4 



Tumble Weed 30 



Turk's-cap Lily 12 



Turtlehead 104 



Tussilago 122 



Tway-blade 1 7 



Twig Rush 8 



Twin-leaf . 4 



