Quercitron Oak, i156. 
Quercus alba, 153. 
aquatica, 157. 
bicolor, 154. 
Cerris, 159. 
coccinea, 156. 
faleata, 157. 
fastigiata, 159. 
heterophylla, 152. 
ilicifolia, 157. 
imbricaria, 158. 
lyrata, 154. 
macrocarpa, 153. 
Michauxii, 154. 
Muhlenbergii, 155. 
nigra, 158. 
palustris, 156. 
pedunculata, 159, 
pendula, 159. 
Phellos, 152, 158. 
prinoides, 155. 
Prinus, 154, 
Robur, 158. 
rubra, 152, 156. 
sessiliflora, 159. 
stellata, 153. 
tinetoria, 156. 
virens, 155. 
Quince-tree, 102. 
Rabbit-berry, 132. 
Red Ash, 123. 
Bay, 130. 
Birch, 147. 
Buckeye, 82. 
Cedar, 199. 
Cherry, 99. 
Elm, 134. 
Horse-chestnut, 82. 
Maple, 85. 
Mulberry, 138. 
Oak, 156. 
Pine, 176, 
Plum, 98. 
INDEX TO PART III 221 
Redbud, 94. 
Red-leaved Alder, 148. 
-Redwood, 193. 
Retinospora, 193, 196, 197. 
Rhamnacee, 79. 
Rhamunus, 79, 80. 
Rhododendron, 117. 
Rhus, 89-91. 
River Birch, 147. 
Robinia, 93, 94. 
Rock Elm, 134. 
Maple, 86. 
Rosacee, 97. 
Rose-acacia, 94. 
Rose Family, 97. 
Rough Oak, 153. 
Round-leaved Maple, 88. 
Rowan-tree, 103. 
Rue Family, 73. 
Rutacew, 73. 
Salicaces, 161. 
Salisburia, 201. 
Salix Alba, 164. 
amygdaloides, 163, 
angustata, 165. 
annularis, 164, 
Babylonica, 164. 
caprea, 166. 
cinerea, 167. 
cordata, 165. 
decipiens, 164. 
discolor, 166. 
falcata, 163. 
fragilis, 163. 
longifolia, 167. 
lucida, 164. 
myricoides, 165. 
nigra, 163. 
pentandra, 165. 
purpurea, 165. 
rigida, 165. 
rostrata, 166. 
rufeseens, 165, 
