INDEX TO THE ILLUSTRATIONS. 



573 



Nemalion multifidum, 275 

 Nepenthes ampullaria, 483 

 Nitella flexilis, 331 

 Nostoc, 37, 217 

 Nuphar adveua, 20 



Oat, 454 



Ochrolechia pallescens, 299 



(Edogonium, 22, 247 



(E^iogonium ciliatum, 248 



(Edogonium gemelliparuin, 248 



Onion, 76 



Orchis mascula, 469 



Oscillatoria, 37, 217 



Osmunda, 877 



P;ilm (stem), 443 



Pandorina Morum, 222 



Papaver Rhoeas, 555 



Parmelia aipolia, 296 



Parmelia tiliacea, 302 



Peach (flower), 530 



Pediastrum granulatum, 65, 224 



Penicillium chartarum, 285 



Peronospora, 261 



Peronospora Alsinearutn, 48, 261 



Peronospora calotheca, 258 



Peronospora infestans, 258 



Pertusaria ceuthocarpa, 299 



Pertusaria Wuli'eni, 309 



Peziza confluens, 286 



Peziza convexula, 42, 287 



Peziza omphalodes, 287 



Phaseolus multiflorus, 43, 475 



Phoenix dactylifera, 452 



Phragmidiuiu bulbosum, 315 



Phragmidium mucronatuni, 315 



Physarum leucopus, 208 



Pilularia globulifera, 380 



Pinus Larico, 401 



Pinus pinaster, 72, 124 



Pinus Pinea, 405 



Pinus sylvestris, 25, 26, 394, 395 



398 



Piptocephalis Freseniana, 239 

 Pirus communis, 528 

 Pirus Cydonia, 528 

 Pisum sativum, 54 

 Plagiochiiia aspleniotdett, 349 

 Polypodium, 373 

 Polypodiura vulgare, 108 

 Potainojreton pectinatus, 129 

 Potato (flower), 501 

 Primula sinensis, 97 

 Prunns Cerasus, 530 



Psoralea bituminosa, 122, 476 

 Pteris aquilina, 24, 27, 72, 81, 83, 



107.371.372,373 

 Puccinia graminis, 311, 313 

 Puccinia Moliniae, 314 



QUINCE, 528 



Quercus Robur, 449, 478 



RANUNCULUS REPENS, 119 



Rhizomorpha subcorticalis, 66 



Rhubarb, 60 



Riccia jjlauca, 345, 346 



Rice. 455 



Ricinus communis, 117, 118, 474 



Rosa canina, 427 



Rosa rubigiuosa, 429 



Rye, 96 



SACCHAROMYCES CEREVISI.E, 39, 



214 



Salix capraea, 486 

 Salvinia natans, 380, 381 

 Sambucus nigra, 445, 446 

 Saprolegnia, 255 

 Saprolegnia androgyna, 257 

 Sarracenia purpurea, 557 

 Schizwa, 377 

 Scorzonera Mspanica, 75 

 Scrophularia. 499 

 Sedum purpurascens, 101 

 Selaginella caulescens, 384 

 Selaginella inaequifolia, 111. 386 

 Selaginella Martensii, 384, 385 

 Sequoia giorantea, 80 

 Shepherd's Purse, 553 

 Silphium laciniatum, 157 

 Solanum, 501 



Sorisporiutu Saponariae, 320 

 Sphaeria morbosa. 293 

 Sphaarophorus globiferus, 298, 302 

 Sphseroplea annulina, 245 

 Sphserotheca Castagnei, 280 

 Sphaerotheca pannoea, 280 

 Sphagnum acutifolium, 355 

 Sphagnum squarrosum, 355 

 Spirillum volutans, 213 

 Spirochaete plicatilis, 213 

 Spirogyra longata, 45, 46, 51, 233 

 Stachys angustifolius, 441 

 Sticta fuliginosa, 295 

 Sticta pulmonacea, 308 

 Stipa spartea, 158 

 j Sunflower, 68 



