INDEX TO THE ILLUSTRATIONS. 



573 



Nemalion multifidum, 275 

 Nepenthes ampullaria, 483 

 Nitella flexilis, 331 

 Nostoc, 37, 217 

 Nuphar advena, 20 



Oat, 454 



Ochrolechia pallescens, 299 



(Edogonium, 22, 247 



(E.logonium ciliatum, 248 



OZdogonium geuielliparuin, 248 



Onion, 76 



Orchis mascula, 469 



Oscillatoria, 37, 217 



Osmunda, 377 



Palm (stem), 443 



Pandorina Morum, 222 



Papaver lihoeas, 555 



Parmelia aipolia, 296 



Parmelia tiliacea, 302 



Peach (flower), 530 



Pediastrum granulatum, Go, 224 



Penicillium chartarum, 285 



Peronospora, 261 



Peronospora Alsinearum, 48, 261 



Peronospora calotheca, 258 



Peronospora infestans, 258 



Pertusaria ceuthocarpa, 299 



Pertusaria Wulteni, 309 



Peziza confluens, 286 



Peziza convexula, 42, 287 



Peziza omphalodes, 287 



Phaseolus multiflorus, 43, 475 



Phoenix dactylifera, 452 



Phragmidium bulbosum, 315 



Phragmidium rnucronatum, 315 



Physarum leucopus, 208 



Pilularia jrlobulifera, 380 * 



Pinus Larico, 401 



Pinus pinaster, 72, 124 



Pinus Pinea, 405 



Pinus sylvestris, 25, 26, 394, 395, 



398 



Piptocephalis Freseniana, 239 

 Pirus conimunis, 528 

 Pirus Cydonia, 528 

 Pisum sativum, 54 

 Plagiochilia a&plenioides, 349 

 Polypodium, 373 

 Polypodium vulgare, 108 

 Potauioereton pectinatus, 129 

 Potato (flower), 501 

 Primula sinensis, 97 

 Prunus 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 



Rhizoinorpha subcorticalis, 66 



Rhubarb, 60 



Riccia fflauca, 345, 346 



Rice. 455 



Ricinus communis, 117, 118, 474 



Rosa canina, 427 



Rosa rubiginosa, 429 



Rye, 96 



SACCHAROMYCES CEREVISI^E, 39, 



214 



Salix capraea, 486 

 Salvinia nataus, 380. 381 

 Sambucus nigrra. 445, 446 

 Saprolegnia, 255 

 Saprole<rnia androeyna, 257 

 Sarracenia purpurea, 557 

 Schizasa, 377 

 Scorzonera hispanica, 75 

 Scrophularia, 499 

 Seduni purpurascens, 101 

 Selaginella caulesceus, 384 

 Selaginella inaequifolia, 111. 386 

 Selaginella Martensii, 384, 385 

 Sequoia gijrantea, 80 

 Shepherd's Purse, 553 

 Silphium laciniatum, 157 

 Solanum, 501 



Sorisporium Saponariae, 320 

 Sphaeria morbosa, 293 

 Spluerophorus ^lobiferus, 298, 302 

 Sphseroplea annulina, 245 

 Sphserotheca Castagnei, 280 

 Sphserotheca pannosa, 280 

 Sphajrnum acuti folium, 355 

 Ipliagnum squarrosum, 355 

 Spirillum volutans. 213 

 ipirochaete plicatilis, 213 . 

 Spirogyra '.ongata, 45, 46, 51, 233 

 Jtachys anpustifolius, 441 

 ^ticta fuliginosa, 295 

 Sticta pulmonacea, 303 

 Stipa spartea, 158 

 Sunflower, 68 



