INDEX 



267 



Opposite bud-scales 42, 46, 49, 54 

 Opposite leaves 11 

 Origin of periderm 94, 96 

 Osier 249, 254, 255 

 Outgrowths- of epidermis 81 



Palm 29, 84, 93 



Pansy 92 



Papaya 29 



Pappus 93 



Parasitic plants 124, 129, 142 



Pear 33, 52, 53, 55, 59, 61, 80, 

 96, 109, 110, 111, 114, 116, 117, 

 119, 121, 122, 128, 239, 240 



Peeling of epidermis 94 



Peltate scales 90, 91 



Perfoliate Honeysuckle 163 



Periderm 94, 96, 98, 107 



Periodic growth 64, 75 



Persistent epidermis 81, 94 



Perulae 19, 133 



Petiole 11, 101, 105 



Petty Whin 190 



Philadelphia 25, 35, 96, 122, 197 



P. Coronarius 96 



Philodendron 29 



Phlomis 90 



Picea 30 



P. excelsa 20, 31, 139 



Pilose hairs 126 



Pine 7, 9, 17, 18, 19, 20, 21. 25, 

 28, 31, 34, 36, 51, 53, 54, 55, 

 57, 59, 63, 68, 77, 80, 96, 99, 

 116, 121, 123, 133 



Pinguicula 92 



Pinus Austriaca 136 



P. Cembra 126, 134 



P. excelsa 134 



P. Laricio 136 



P. montana 136 



P. monticola 134 



P. Pinaster 136 



P. Pinea 136 



P. Strobus 134 



P. sylvestris 109, 135, 136 



P. Taeda 134 



Piperaceas 91 



Pith 212 



Plan-diagram of bud 9, 41, 46 



Plane 35, 52, 53, 56, 57, 59, 61, 

 95, 109, 112, 117, 118, 121, 122, 

 123, 127, 189, 213, 214 



Plane leaf 58, 63 



Platanus 25, 35, 189, 197_ 



P. occidentalis 213, 214 



P. orientalis 214 



Plicate leaf 44, 58, 63, 70 



Plum 33, 52, 54, 61, 80, 83, 110, 



116, 117, 119, 121, 123 

 Plumule 3, 6, 7, 9, 12 

 Polished surface 127 

 Polygonum 37 

 Poplar 23, 24, 26, 33, 45, 53, 55, 



59, 61, 68, 80, 93, 95, 96, 119, 



121, 122, 142 



Populus alba 108, 227, 228 



P. canadensis 27, 109, 123 



P. nigra 27, 45, 109, 221-223 



P. pyramidalis 221 



P. tremula 219, 220, 221, 227 



Portugal Laurel 52, 150 



Position of buds 25, 30, 36 



Position of leaf-scars 116 



Potentilla 88, 90 



Prickles 5, 81, 92, 124, 127, 189, 



199 



Primary bud 3, 9, 13 

 Primary root 5, 6 

 Primary stem 6 

 Primulaceae 91 

 Privet 51, 53, 54, 63, 97, 98, 109, 



110, 115, 116, 117, 118, 119, 



122, 144, 173, 174 

 Protective functions of bud-scales 



23, 27 



Pruinose twigs 112 

 Pnuws 28, 34, 37, 55, 60, 68, 



95, 96, 118, 126, 241-247 

 P. Amygdalus 60 

 P. Avium 25, 27, 50, 59, 60, 69, 



108, 110, 111, 219, 244, 246, 



247 



P. Cerasus 60, 244, 245, 247 

 P. domestica 192, 242, 243, 247 

 P. insititia 126, 192, 231, 243, 



245 



P. Laiiro-cerasus 149 

 P. I^usitanica 149, 150 

 P. Padus 34, 60, 126, 241, 242 

 P. spinosa 60, 162, 192, 193, 243, 



245 



Pseudo-distichous 137 

 Pseudo-terminal bud 113, 114 

 Pseudo-whorls 30, 31, 34, 133 



