266 
Senecio, 247 
Sensitive Brier, 129 
Sensitive Rose, 129 
Service Berry, 118 
Shad Bush, 118 
Shame Vine, 12° 
Sheep Lice, 204 
Sheep Sorrel, 70 
Shellbark, 63 
Shepherd’s Purse, 103 
Sheriff Pink, 247 
Shin Leaf, 178 
Shoe Strings, 136 
Shooting Star, 188 
Shrub, 94 
Sickle Pod, 107 
Sicyos, 257 
Sidesaddle Flower, 109 
Sieversia, 121 
Silene, 80 
Silverweed, 120 
Sisymbrium, 104 
Sisyrinchium, 47 
Sitilias, 253 
Skullcap, 210 
Skunk Cabbage, 25 
Smartweed, 71 
Smilacez, 32 
Smilacina, 3 
Smilax, 42 
Snakeroot, Black, 173 
Snakeroot, Samson’s, 
135 
Snakeroot, Seneca, 145 
Snapdragon, 218 
Snappers, 81 
Snapweed, 154 
Sneezeweed, 246 
Snow on the Mountain, 
147 
Snowball, 23 
Snowberry, 282 
Solanaceve, 214 
Solanum, 214 
Solomon’s Seal, 41 
Sonchus, 251 
Sophora, 132 
Sorbus, 116 
Sorrel, Sheep, 70 
Spanish Dagger, 39 
KEY AND FLORA 
Spathyema, 25 
Spatter-Dock, 82 
Spearwort, 84 
Specularia, 238 
Speedwell, 220 
Spice Bush, 96 
Spiderwort, 27 
Spiderwort Family, 26 
Spikenard, False, 40 
Spinach, 73 
Spinacia, 73 
Spireea, 115 
Spiranthes, 48 
Spring Beauty, 77 
Spruce, 16, 17 
Spurge, 147, 148 
Spurge Family, 145 
Spurge Nettle, 146 
Squash, 237 
Squaw Vine, 229 
Squawroot, 42 
Squill, 37 
Squirrel Corn, 99 
Stachys, 212 
Staggerbush, 181 
Staphylea, 151 
Staphyleacee, 151 
Star Flower, 187 
Star Grass, 45 
Star of Bethlehem, 38 
Steironema, 186 
Stellaria, 78 
Stick-Tights, 204 
Stitchwort, 78 
Stock, 102 
Straw Lilies, 34 
Strawberry, 118, 119 
Strawberry Bush, 94, 
150 
Streptopus, 40 
Sugar Pear, 118 
Sumac, 148 
Sumac Family, 148 
Sundrops, 168 
Supple Jack, 154 
Sweet Alyssuim, 101 
Sweet Bay, 92 
Sweet Cicely, 173 
Sweet Clover, 135 
Sweet Fern, 52 
Sweet Flag, 26 
Sweet Pea, 139 
Sweet Potato, 198 
Sweet William, 81 
Sweetbrier, 124 
Sweet-Scented Shrub, 94 
Sycamore, 113 
Sycamore Family, 113 
Symphoricarpus, 232 
Symplocarpus, 25 
Syndesmon, 86 
Syringa, 111, 190 
Tamarack, 18 
Tangleberry, 182 
Tansy Mustard, 104 
Taraxacum, 261 
Tassel Tree, 158 
Taxodium, 18 
Tecoma, 222 
Thalesia, 224 
Thalictrum, 85 
Thaspium, 174 
Thistle, 248, 249, 251 
Thuja, 18 
Thyme, 213 
Thymus, 218 
Tiarella, 110 
Tickseed, 245, 246 
Tilia, 157 
Tiliaceee, 157 
Tinker Weed, 233 
Tipsin, 136 
Toadtlax, 218 
Toadflax, Bastard, 67 
Tomato, 215 
Tongue Grass, 102 
Toothache Tree, 144 
Toothwort, 106 
Toxrylon, 65 
Tradescantia, 27 
Trailing Arbutus, 182 
Trefoil, Marsh, 192 
Trientalis, 187 
Trifolium, 183 
Trillium, 41 
Triosteum, 233 
Troprolaces, 142 
Tropreolum, 145 
Tropeolum Family, 142 
