INDEX 



305 



Papijriis 7 



Parasite 219 



Passifloracese 114 



Passion Flower 111 



Paullinia 111. 112 



Fa I- id 177 



Pea 102 



Pear 50, 62, 198, 223; see also 



Pijrus coiinnunis 

 Perexkia 128 



Perfoliate Honeysuckle 221, 222 

 Periderm 91 

 Periwinkle 116, 117 

 Petermannia 114 

 Pharhiti-s 106 

 Philadelphus 94 

 Picea excelsa 3, 7, 11, 31, 32, 



36, 45, 61, 95, 98, 99, 133, 



146, 147, 274 

 Pine 23, 36, 39, 53, 65, 67, 74-8, 



163, 177, 182; see also Pinus 

 Piniis 23, 36, 39, 53, 65, 67, 74-8, 



163, 177, 182 



P. Cembra 142, 143, 156, 274, 



275 

 P. e.veelsa 144, 275 

 P. Laricio 136, 139, 273 

 P. montana 138, 272 

 P. monticola 144 

 P. Pinaster 136, 139, 140, 273 

 P. Piuea 8, 10, 69, 136, 137, 



139, 141, 274 

 P. Pimilio 7 



P. Strobn.s 136, 143, 144, 275 

 P. sijlvestri.-i 24, 44, 61, 67, 68, 



95, 97, 99, 136, 138, 182, 272 

 P. T<cda 136, 139 

 Piper flumense 102 

 Pistia' 127 

 Pisum fiatintm 109 

 Plane 62, 69, 72, 87, 90, 94, 164, 



175, 176, 213, 283, 284; see also 



Platduits 

 Platniius 62, 69, 72, 87, 90, 94, 



164, 175, 176, 213, 283, 284 

 P. acerifolia 175 



P. occideiitdlis 175 



P. orientalis 175 



Plum 56, 259, 277, 279 ; see also 



Prutius ditmextica 

 Plumbago 106 

 Poa aquatica 127 



P. fluitans 127 



Polarity of shoots 48 



Pollarding 61 



Pollard Oak 16 



Pollard Wilow 16 



Pohjqonum 106, 117 



P. liistorta 120 



P. cusjndatinn 120, 121 



Pontederia 127 



Poplar 32, 36, 38, 44, 45, 61, 62, 



86, 164, 201, 260; see also 



Populus 

 Populus 26, 32, 36, 38, 44, 45, 



61, 62, 86, 164, 201, 260, 289 

 P. alba 56, 182, 187, 188 

 P. canadetisis 214 

 P. cinerea 187 

 P. ni(jra 95, 213, 214 

 P. nigra v. pi/ramidalis 10, 11, 12, 



64," 65, 134, 182 

 P. tremula 182, 187 

 Portulacaceas 129 

 Potamogeton 127 

 Potato 118, 122 

 Potentilhc 116 

 Primrose 119 

 Privet 62, 82, 247, 253 ; see also 



Ligustrnm rulgare 

 Procumbent stem 117 

 Prostrate stem 117 

 Pruning 63 



Prumis 26, 175, 182, 293 

 P. Amii>idalus 174, 298, 299 

 P. Avium 148, 173, 174 

 P. C ems us 173 

 P. domestica 56, 174, 259, 277, 



279 

 P. insititia 174, 233, 277 

 P. Ijaurocerasus 253 

 P. lusitatiica 253 

 P. Mahaleb 277, 278 

 P. P«(;«.s 44, 62, 148, 174, 277, 



278 

 P. s/)iHOAa 23, 27, 28, 62, 233, 



234, 259, 277, 278 

 Psamma arenaria 122 

 Pseudo-bulbs 126 

 Pseudotsuqa Douglaifii 146, 147, 



148, 163, 272 

 Pterocarija 191 

 Purple Willow 257, 263 

 Pyramidal trees 11 



