INDEX 



419 



Prasiola crispa (176) 

 Preissia quadrata 344 

 Psathjrella atom aria 44 



disseminata 44 

 Pseudoleskea atrovirens 292, 306 



radicosa 292 



rigescens (292) 



stenophylla 292, 306 

 Pseudopeziza bistortae 23 



cerastiorum arenarise 23 

 Pseudovalsa ribesia 29, 60, p1. v, £. 14 

 Psilocybe poljtrichi 44 

 Psilopilum arcticum 287 

 Pteridium aquilinumi pubescens 379 



lanuginosum (379) 

 Pteridofhytes 4, 8, 9, 373 

 Pteris aquilina (379) 



aquilina lanuginosa (379) 



argentea (379) 



lanuginosa (379) 

 PterygophjUum lucens 291, 306 

 Ptilidium californicum 343, 363 



ciliare 363 

 Ptilota asplenoides 159, 203 



plumosa 159, 203 



serrata 160, 203 

 Puccinia asteris 39 



bullata 38 



caricis 37, 40 



circaese 38 



fergussoni 39 



gentianae 37 



geranii silvatici 37, 39 



heucherse 39 



laurentiana 38 



moliniae 37 



porphjrogenita 39 



prenanthis 39 



procera 39 



saxifragae 39 



saxifragae-ciliatae 38 



thlaspeos 39 



tiarellae 39 



uliginosa 40 



Valerianae 39 

 Punctaria plantaginea 158, 184 



plantaginea linearis 184 

 Pycnothalia cladinoides 147 

 Pylaiella littoralis 158, 196 



Pylaiella littoralis acuta 182 



densa 183 

 macrocarpa 183 

 opposita 182 

 varia 183 

 PTrenophora chrjsospora 28 

 connata 28 

 phaeospora 28 

 poljphragmia 28 



polyphragmoides 28, 60, p1. v, f . 13 

 Pyrenula 78 



gemmata 70 

 Pjthium gracile 35 



Radula arctica (366) 



bolanderi 343, 366 



complanata 366 



krausei (366) 

 Ralfsia clavata 158, 188 



deusta 158, 180, 188 

 Ramalina 3 



calicaris farinosa 147 



cuspidata 147 



geniculata (147) 



minuscula 147 



polymorpha 146 

 emplecta 146 



pusilla geniculata 147 

 Ramularia aequivoca 17 



anserina 16 



arnicalis 17 



cercosporoides 16 



heraclei 17 



macrospora 17 



pratensis 17 



punctiformis 16, 56, pi. in, f. 8 

 Raphidostegiumpseudorecurvans(30i) 



subdemissum 296 

 Red snow 173 

 Reindeer 7 

 Remedies 5 

 Rhabdonema arcuata 207 



biquadratum 207 



elegans 207 



fauriae 207 



japonica 207 



slriatula 207 

 Rhabdospora camptospora z8, 62, pi. 

 VI, f. 26 



