198 



Tamarack, 101. 

 Taiiacetum, 66. 

 Tansy, 66. 

 Taraxacum, 69. 

 Tare, 46. 

 Taxodium, 102. 

 Taxus, 102. 

 Teasel, 60, 169. 

 Teasel Family, 60. 

 Tecoma, 77. 

 Teplirosia, 45. 

 Tetraphidese, 139. 

 Tetraphis, 139, 170. 

 Teucrium, 80. 

 Thalaspi, 34. 

 Thalictrum, 29. 

 Thallophytes, 149. 

 Thaspium, 56. 

 Thelia, 141. 

 Thelieaj, 141. 

 Theloscliistes, l.'^O. 

 Thimbleherry, 49. 

 Thin Grass,;i23. 

 Thistle, 68. 

 Thoroughwort, 61. 

 Three-seeded Mercury, 94. 

 Three-thorned Acacia, 47. 

 Thyme, -81. 

 Thymeleaceae, 93. 

 Thyme-leaved Sandwort, 31 

 Thymus, 81. 

 Tiarella, 52. 



Tick-seed Sunflower, 65. 

 Tiger Lily, 112. 

 Tilia, 40. 

 Tiliacese, 40. 

 Timothy, 123. 

 Toad Flax, 78. 

 Tower Mustard, 33. 

 Tracy, Cyrus M., 25. 

 Tree-of-Heaven, 42. 

 Trichocolea, 145. 

 Trichostema, 81. 

 Trichostomeae, 139. 



Trichostomum, 139. 

 Tricuspis, 125. 

 Trieiitalis, 75. 

 Trifolinm, 45. 

 Triglochin, 106. 

 Trillium, 110. 

 Triosteum, 69. 

 Triticum, 127. 

 Trumpet Flower, 77. 

 Trumpet Honeysuckle, 58. 

 Trypethelium, 155. 

 Tsuga, 101. 



Tufted Loosestrife, 75. 

 Tulip Tree, 31, 169. 

 Turk's Cap Lily, 112. 

 Tupelo, 58. 

 Turtle-head, 78. 

 Tussilago, 61. 

 Tway-blade, 109. 

 Twisted-stalk, 111. 

 Typha, 103. 

 Typhacese, 103. 



Ulraus, 94. 

 Ulva, 166. 

 Umbellifera3, 55. 

 Umbilicaria, 151. 

 Upland Boneset, 61. 

 Upright Chess, 127. 

 Urceolaria, 153. 

 Urtica, 95. 

 Urticacese, 94. 

 Usnea, 150. 

 Utricularia, 76. 

 Uvularia, 111. 



Vaccinium, 71. 



Vaccinium, Vitis-Idsea, 12, 71. 



Vallisneria, 107. 



Vanilla Grass, 120. 



Vascular Cryptogams, 131. 



Vaucheria, 166. 



Velvet Grass, 128. 



Velvet Leaf, 40. 



