INDEX 



263 



Finns Banksiana, 221 



Laricio, 126 



Strobus, 53 

 Pisum sativum, 61 

 Plantago major, 95 

 Plantain, 95 



Plant groups, sequence of, 130 

 Plants, evolution of, 124, 201 

 Pleurococcus, 80, 127 



vulgaris, 46, 47 

 Plover, American golden, 151 



Pacific golden, 151 

 Pluchea faetida, 164 

 Polydemics, 177 

 Polyphyletic hypothesis, 239 

 Polypodiacea, 139, 169 

 Polypodium, 7, 8, 9, 12 



punctatum, 6 



wno sum, 128 

 Polysiphonia, 135 

 Porretta, 128 

 Polentilla ninea, 161 

 Primofilices, 236 

 Prince's Island, 148 

 Pritchardia, 165 

 Proangiosperms, 216 

 Pro-anthostrobilus, 232 

 Problem, the modern, 100 

 Propagation, 32 



vegetative, 49, 50 

 Prothallus, 18, 19 

 Protonema, 17, 18 

 Protoxylem, 245 

 Prunus Graves ii, 180 



maritima, 180 

 Pteridophyta, 245 

 Pteridophytes, 244 

 Pteridosperms, 201 



significance of the, 206 

 Pteris, 9 



aquilina, 2, 8, 154 



longifolia, 6 



Pleropsida, 238 



Pucdnia glumarum, 71 



Pure line breeding, 68 



Purity of gametes, theory of, 63, 64 



Quercus chrysolepis, 103 

 Qu6telet, 105 

 QuStelet's curve, 106, 107 

 Quetelet's law, 103 



Race, middle, 223 

 Radium, 73, 242 

 Ranales, 218 

 Ranunculus aqiiatilis, 86, 87 



Ficaria, 226 

 Receptacle, 8 

 Reduction, 35 



nature and method of, 36 

 Relict endemic, 167 

 Relicts, 177 

 Reproduction, inheritance and, 50 



sexual, 32, 53 

 Rhizoid, 1 8, 17, 23 

 Rhizomes, 3 

 Rhizophora Mangle, 228 

 Rhizopus, 51 

 Rhododendron lapponicum, 159 



certicillatum, 147 

 Rlccia, 126, 129, 173 



trichocarpa, 128 



Rock strata, classification of, 189 

 Rocks, stratification of, 188 

 Root-stocks, 3 

 Rubiacece, 171, 172 

 Rubus chamaemorus, 155 

 Rudbeckia sp., 114 

 Rust disease, 71 



Salina, 199 



Saltation, orthogenetic, 109 



Sahinia, 82 



Sap, nuclear, 36 



