277 



Pestallozia • ' 203 



Petalonema 240 



Petasites 70, 105 



Peziza 190, 217, 220, 221 



Phacidium 223 



Phalaris 152, 266 



Phallus 193 



Phascum 157 



Phaseolus 259 



Phegopteris 154 



Phlebia 187 



Phleum 1 9 



Phlox 124,256 



Phoenix 209 



Phoma 197 



Phormidium 242 



Phragmidium 204 



Phragmites 151, 206, 228 



Phryma 120 



Phyllachora 22S 



Phyllactinia 214 



Phyllosticta 201 



Physalacria 191 



Physalis 125, 262, 268 



Physarum 194, 196 



Physcia 168 



Physcomitrium 160 



Physostegia 121, 206 



Phytolacca 128 



Picea 136 



Pilacre 214 



Pilea 132 



Pileolaria 208 



Pilobolus 214 



Pimpinella. 100, 205 



Pinguicula 70, 71, 117, 268 



Pinnularia 248 



Pinus 136, 257 



Pistillaria 191 



Placodium 169 



Plagiochila 166 



Plantago 116, 257, 261, 268 



Platanus 132, 199, 202, 229, 230 



Platygyrium 163 



Pleurocarpus 238 



Pleurococcus 240 



Pleurosigma 249 



Pleuroteenium 238 



Pleurotus 177 



Plicatura , 182 



Poa 150 



Podisoma 207 



Podophyllum 80, 204 



Podosporium 211 



Podospheeria 215 



Pogonatum 161 



Pogonia 140 



Polanisia 84 



Polemonium 123 



Polyactis .213 



Polycystis .• 207 



Polygala 91, 201, 204, 259, 267 



Polygonatum. . 143, 200, 201 



Polygonum. .73, 129, 199, 200, 206, 207 

 [208, 233, 268 



Polymnia 108 



Polypodium 153 



Polyporus iS2, 185, 221, 225, 226 



Polythrincium 212 



Polytrichum 161 



Pontederia 144 



Populus 134, 201, 208, 263 



Porphyridium , 236 



Portulaca 87, 213 



Potamogeton ...73, 138, 263, 264, 26S 



Potentilla 95, 204, 219, 228, 259 



Poterium 95, 259, 267 



Pottia 158 



Preissia 165 



Prenanthes 112, 267 



Primula 70, 71, 116 



Prosartes 143 



Proserpinaca 98 



Protomyces 209 



Prunus 94, 204 



Ptelea 71, 89 



Pteris 154, 235 



Pterospora 71, 115 



Ptilidium 166 



Ptychogaster 196. 



Puccinia 204, 207 



Pycnanthemum 120 



Pylaissea 162 



Pyrenula ...173 



Pyrola 115, 209 



Pyrus 96, 260, 267 



Pyxine 168 



Quaternaria 230 



Quercus 72, 73, 133, 216. 224 



Rabenhorstia 229 



Radula 166 



Ramalina ... 167 



Ramularia 212 



Ranunculus 72, 77, 207, 257, 266 



Raphanus 258 



Reseda 84, 258 



Rhamnus 90, 226 



Rhaphidium . . .239 



Rheum 263 



Rhizina 217 



Rhizoclonium 237 



Rhizosolenia 250 



Rhododendron 115, 203. 224, 234 



Rhoicosphenia 246 



Rhus 90, 198. 200, 201, 208, 210 



[226, 259 



Rhinchospora 146 



Rhytisma 223 



Riccia 165 



Ribes. . . 97, 226, 228 



