181 



Bircl's-foot Violet (V. pedata), 



35. 

 Birthwovt Family, 89. 

 Bitter Dock, 92. 

 Bitternut Iliclcory, 96. 

 Bittersweet, 85. 

 Black Alder, 74. 

 Black Ash, 891. 

 Blackberry, 49, 50; 

 Black Bindweed, 92. 

 Black Bireh, 9». 

 Black Cherry, 47. 

 Black Currant, 51. 

 Black Grass, 113. 

 Black Horehoiind, 83. 

 Black Medick-, 45. 

 Black Mustard, 34. 

 Black Oak, 97. 

 Black Oat Grass, 124. 

 Black Raspberry (Thimbleberry), 



49. 

 Black Scrub Oak, 97. 

 Black Snakeroot, 31, 56. 

 Black Spruce, 12, 101. 

 Black Thoru, 50. 

 Black Walnut, 96. 

 Bladder Campion, 38. 

 Bladderwort, 76. 

 BladdiM-wort Family, 76. 

 Bladder Ketmia, 40. 

 Blazing star, 60. 

 Blitum, 90. 

 Blue Beech, 98. 

 Blueberry, 71. 

 Bluebottle, 67. 

 Blue Cohosh, 31. 

 Blue-curls, 81. 

 Blue-eyed Grass, 110. 

 Blue Flag, 110. 

 Blue Grass, 126. 

 Blue-joint Grass, 124. 

 Blue Lettuce, 69. 

 Blue Ven-ain, 80. 

 Blue Violet, 35. 



Blue-weed, 83. 

 Bloodroot, 32. 

 Bojhmeria, 95. 

 Borage Family, 83. 

 Borraginacese, 83. 

 Bostrychia, 158. 

 Botrychium, 132. 

 Bottle Brush Grass, 128. 

 Bouncing Bet, 37. 

 Bouteloua, 125. 

 Brake, 133. 

 Brachyelytrum, 124. 

 Brasslca, 34. 

 Brasenia, 31. 

 Bristly Crowfoot, 30. 

 Bristly Sarsaparilla, 57. 

 Briza, 127. 

 Brizopyrum, 126. 

 Bromus, 127. 

 Broom-rape Family, 77. 

 Brown Bent Grass, 123. 

 Brnnella, 82. 

 Bryacese, 138. 

 Bryese, 140. 

 Bryopsis, 165. 

 Bryum, 140, 171. 

 Buckbean, 87. 

 Buckthorn, 43. 

 Buckthorn Family, 43. 

 Buckwheat, 92. 

 Buckwheat Family, 91, 92. 

 Buellia. 1.54. 

 Bngle-weed, 81. 

 Bunch Berry, 57. 

 Burdock, 68. 

 Bur-reed, 104. 

 Bush Honeysuckle, 95. 

 Butter-and-eggs, 78. 

 Buttercups, 30. 

 Butterfly-weed, 88. 

 Butternut, 96. 

 Button Bush, CO. 

 Button wood, 95. 

 Buxbaumiese, 140. 



