INDEX 



Pseudotsuga Douglasii 139, 140 



Puberulence 126 



Pubescence 124, 126 



Pulvinar spines 128, 129, 197 



Pulvinus 128 



Pungent leaf 141 



Punica 37 



Purple Osier 253 



Purple twigs 112 



Purple Willow 251, 252 



Pyramidal Poplar 221 



Pyrus 96, 118, 246, 247 



P. Aria 111, 126, 224, 236, 237, 



238, 246 



P. Aucuparia 225, 226, 227 

 P. communis 196, 239, 240 

 P. Mains 229, 230 

 P. Sorbus 108, 111, 112, 223 

 P. torminalis 109, 111, 112, 235, 



236, 246 



Quercus Cerris 110, 112, 118, 126, 



216, 218 



Q. coccinea 110, 112, 218 

 Q. Ilex 148 

 Q. ilicifolia 26 

 Q. pedunculata 217 

 Q. pubescens 126, 218 

 Q. Robur 47, 216, 217 

 Q. rubra 111, 218 

 Q. sessiliftora 218 

 Q. Suber 149 

 Quick-growing shoots 72 



Kadicle 5, 6 



Rapidity of growth 71 



Easpberry 125, 202, 203 



Eecurrent growth 75 



Eed-berried Elder 159 



Eed Currant 33, 53, 55, 63, 108, 



117, 119, 122, 209 

 Eed Maple 26 

 Eed Oak 117 

 Eed twigs 110 

 Eeduced leaves, 18, 49, 51 

 Eelations of leaf to shoot-axis 100 

 Eeplacement of epidermis 94 

 Eesinous excretions 15, 56, 57, 81, 



84, 91, 125 

 Eevolute leaf 58, 61 

 Rhamnus 46, 80, 95, 96, 193 



R. catharticus 31, 46, 59, 63, 111, 



112, 128, 159, 160 

 R. Frangula 27, 51, 111, 112, 126, 



215 

 Rhododendron 51, 54, 55, 56, 59, 



61, 223 



R. ponticum 149 

 Rhus 118, 123 

 R. typhina 25, 50, 111, 117, 119, 



122, 126, 211 

 Ribes 96, 99, 108, 125 

 R. alpinum 209 

 R. Grossularia 197, 198 

 R. nigrum 109, 207, 208, 209 

 R. rubrum 209 

 Ricinus 93 



Eing-shaped leaf-scars 117 

 Eobinia 29, 33, 35, 39, 96, 99, 



108, 110, 112, 122, 128, 197, 



198 



R. pseudacacia 25, 197, 198 

 Eoot-climbers 129, 146 

 Eoot-system 3, 4 

 Rosa 125, 202 

 R. arvensis 202 

 R. canina 201, 202, 204 

 R. rubiginosa 202 

 R. spinosissima 204 

 R. viilosa 204 

 Eose 18, 33, 52, 53, 55, 59, 60, 92, 



96, 110, 111, 112, : 117, 118, 119, 



127 



Eose Bay 149 

 Eough bark 96, 99 

 Eowan 53, 55, 108, 109, 110, 111, 



114, 117, 119, 121, 122, 126, 225, 



226, 227, 246 

 Rubus 37, 92 



R. fructicosus 145, 202, 203 

 R. Idaus 202, 203 

 R. odoratus 97 

 Eugose surface 127 

 Ruscus aculeatus 150 

 Eusty hairs 126 



Salix 37 



S. alba 87, 109, 111, 249, 252, 253 



S. aurita 108, 111, 256, 258 



S. Caprea 255, 256, 257, 258 



S. cinerea 256, 257, 258 



S. daphnoides 83, 112, 124, 248 



S. decipiens 249 



