INDEX 



341 



Oxidising reagents 72 



Oxygen 85, 89, 91, 92, 95, 96, 126, 



132, 134 

 Oxygen respiration 122, 125 



Paired leaflets 44 



Palaeontology 36 



Palisade cells 86, 88 



Palisade tissue 88, 119 



Palmate leaf 38, 40, 42, 43, 45, 



157, 158, 175 

 Palmate venation 32, 34, 35, 46, 



48, 49, 54, 59, 62, 64, 180, 184, 



216, 218, 219, 224 

 Palmate-looped venation 35 

 Palmate-pinnate venation 35, 64, 



65 

 Palmate-reticulate venation 35 

 Palmately lobed leaf 40, 45 

 Palmatifid leaf 40, 45, 180 

 Palmatisect leaf 40 

 Pal niati- partite leaf 40 

 Palms 4, 35 



Parallel venation 32, 33, 35 

 Parasitic plants 75 

 Pari-pinnate leaf 44, 151 

 Paris quadrifolia 7 

 Partition-walls 102 

 Partitions of cells 67, 68, 72 

 Passion Flower 4 

 Pathological conditions 37 

 Peach 71 

 Pear 6, 14, 21, 25, 29, 30, 52, 59, 



71, 99, 118, 252, 274, 275, 290, 



293 

 Pendent leaves 113, 148, 248, 309 

 Perennials 145 



Perfoliate Honeysuckle 199, 200 

 Periodic changes 114 

 Periodic differences of turgescence 



115 

 Periodic movements 108, 112, 115 

 Permeable cell-walls 89 

 Persistent sheath 310 

 Persistent stipules 20, 211, 236 

 Petiolar glands 270 

 Petiolate leaf 14, 17 

 Petioles 11, 14, 17, 18, 19, 22, 23, 



40, 43, 44, 46, 48, 80, 82, 84, 



109, 110, 113, 120, 125, 148, 



159, 262 

 Petioles, eglandular 273, 277 



Petioles, glandular 268 



Petiolule 38, 41, 42, 43, 109, 113, 



151, 153, 171 

 Petty Whin 297 

 Phaseolus 110 

 Philadelphus 110 

 Phormium 148 



Photographic starch-figures 137 

 Photo-synthesis 86, 95, 108, 109, 



125, 128 

 Phvlloclades 139, 147 

 Phyllodes 99, 138, 147 

 Ph'yllotaxy 3, 4, 5, 6, 7, 8, 9, 



12 

 Physical forces 92 

 Phvsiologieal machinery 109, 128 

 Physiology of leaf 108, 123, 128 

 Picea excelsa 316, 317 

 Pilose surface 37, 303 

 Pine 20, 24, 36, 37, 55, 89, 100, 



118, 140, 141, 309 

 Pinnate leaf 38, 39, 40, 41, 44, 



157, 158, 161, 170, 171 

 Pinnate venation 32, 34, 35, 46, 



47, 48, 49, 52, 54, 55, 57, 59, 



61, 62, 154, 203, 207, 232, 250, 



253 

 Pinnate-arcuate venation 46, 58, 



59, 189, 195, 196, 291 

 Pinnate-looped venation 46, 57, 



58, 164, 194, 197, 250, 251, 

 255, 265. 266 

 Pinnate-reticulate venation 46, 59, 



60, 65, 66, 154, 197, 199, 201, 

 204, 244, 245 



Pinnately lobed leaf 40, 45 



Pinnatifid leaf 40, 44 



Pinnati-partite leaf 40 



Pinnatisect leaf 40 



Pinus Ceiubra 308 



P. Corsica 312 



P. excelsa 309 



P. Laricio, Poir, var. Austriaca 



311, 312 

 P. montana 310 

 P. monticola 309 

 P. Pinaster 313 

 P. Pinea 312 

 P. pyrenaica 312 

 P. Strobus 308, 309 

 P. syluestris 310, 311 

 P. Teeda 310 



