184 



MIDDLESEX FLOEA. 



Arbor-Vitse, 97. 

 Arbutus, 61. 

 Arqhangelica, 40. 

 Arctium, 57. 

 Arctostaphylos, 61. 

 Arenaria, 15. 

 Arethusa, 103. 

 Argemone, 4. 

 Arisaema, 97. 

 Aristida, 125. 

 Aristolochiaeese,, 82. 

 Arrhenatherum, 128. 

 Arrow-grass, 101. 

 Arrow-head, 102. 

 Arrow-wood, 44. 

 Artemisia, 54. 

 Arthonia, 173. 

 Arthrodesmus, 161. 

 Arum, 97. 

 Asarum, 82. 

 Asclepiadaceae, 81. 

 Asclepias, 81. 

 Ascophyllum, 154. 

 Ash, 82. 

 Asparagus, 108. 

 Aspen, 96. 

 Asperugo, 76. 

 Aspidium, 136. 

 Asplenium, 135. 

 Asprella, 134. 

 Aster, 47. 

 Atrichum, 144. 

 Atriplex, 84. 

 Aulacomnion, 144. 

 Avena, 128. 

 Avens, 31. 

 Azalea, 62. 



Bachelor's Button, 56. 

 Bseomyces, 172. 

 B%ria, 53. 

 Ballota, 74. 

 Balm of Gilead, 96. 

 Balsam, 96. 



Balsam Apple, 40. 

 Bambusiua, 159. 

 Baneberry, 3. 

 Baptisia, 29. 

 Barbarea, 7. 

 Barberry, 3. 

 Barbula, 142. 

 Barley, 134. 

 Barnyard Grass, 123. 

 Bartonia, 80. 

 Bartramia, 143. 

 Basil, 71. 

 Basswood, 18. 

 Bastard Toad-flax, 89. 

 Batrachospermum, 153. 

 Bayberry, 93. 

 Bazzania, 150. 

 Beak-rush, 114. 

 Bearberry, 61. 

 Beard Grass, 124, 127. 

 Bedstraw, 44. 

 Beech, 93. 

 Beech-drops, 67. 

 Beech Fern, 136. 

 Beggar-ticks, 52. 

 Beggar's-lice, 76. 

 Beggiatoa, 164. 

 Bellls, 49. 

 Bell wort, 107. 

 Bengal Grass, 123. 

 Benjamia Bush, 89. 

 Bent Grass, 127. 

 Berberidaceae, 3. 

 Berberis, 3. 

 Bergamot, 72. 

 Betonica, 73. 

 Betony, 69, 73. 

 Betula, 94. 

 Betulaceae, 94. 

 Biatora, 172. 

 Bidens, 52. 

 Bindweed, 77, 87. 

 Birch, 94. 

 Bkd Millet, 123. 



