240 
NUMMULARIA DISCRETa, 19,20. 
Nummularia EXCaVATA, 20. 
Nummularia exutans, 22. 
Nummularia glycyrrhiza, 21. 
Nummularia hyfophl^a, 21,22. 
Nummularia micropi.aca, 21. 
Nummularia obularia, 21. 
Nummularia pezizoides, 19. 
Nummularia repanda, 19. 
Nummularia rumpens, 22,23. 
Nummularia subapiculata, 23. 
Nummularia subconcava, 20. 
Nyctalis, 99. 
Oidiura, 220, 224. • 
(Milium erysipboides, 82. 
Oidium lactis, 55, 99. 
OlDIUM PIRINUM, G8. 
Oidium Tuckeri, 46. 
Oligoporus, 99. 
Oomycetes, 101, 168. 
OVULARIA CARLETONI, 144. 
OVULARIA COMPACTA, 68. 
Penicillium, 173. 
Penicillium glaucum, 158, 173. 
Peniopliora occideutalis, 83. 
Peridermium pini, 176. 
Poronospora, 10, 86,107,168, 201, 202. 
Poronospora alta, 9. 
Peronospora androsacos, 161. 
Peronospora Artkuri, 8, 94. 
Poronospora caiotheca, 9. 
Peronospora corydalis, 94. 
Peronospora Cubensis, 168, 201, 216. 
Peronospora effusa, 8. 
Peronospora euphorbias, 9. 
Peronospora gangliformis, 8, 83. 
Peronospora geranii, 8. 
Peronospora graminicola, 9. 
Peronospora Halstedii, 7. 
Peronospora leptosperma, 9. 
Peronospora lopkanthi, 9. 
Peronospora myosotidis, 83. 
Peronospora obducens, 8. 
Peronospora parasitica, 8, 9. 
Peronospora polygoni, 9. 
Peronospora potentillae, 8. 
Peronospora pygmaea, 8, 83. 
Poronospora Sebleideniana, 178. 
Peronospora sordida, 9. 
Peronospora trifolioruiu, 9. 
Peronospora violae, 202. 
Peronospora viticola, 7, 202. 
Peronosporcae, 9,10,11, 69,101,188, 201. 
Pestalozzia affinis, 156. 
Pestalozzia aquatica, 157. 
Pestalozzia concenlrica, 149. 
Pestalozzia flagellifera, 156. 
Pestalozzia maura, 157. 
Pestalozzia nerval is, 157. 
Pestalozzia pallida, 143, 156. 
Pestalozzia uncinata, 143. 
Pestalozziella Andersoni, 65. 
Pestalozziella subsessilis, 65. 
Peziza, 48, 130, 224. 
Pezizabulborum, 225. 
Peziza calycina, 164. 
Peziza sclerotiorum, 225. 
Peziza tuberosa, 224, 225. 
Peziza vogoensis, 65. 
Tilacreae, 101. 
Pilolobus, 101. 
Piptocepbalideae, 101. 
rhalloiileae, 101. 
Pballoiilei, 168, 169. 
Phallus impudicus, 168. 
Plileospora aceris, 154. 
PlILEOSPORA OXYTROPIDI8, 65, 83. 
Phlebia mcrismoides, 84. 
Pboma, 106,145. 
Pkoma abietina, 164. 
Pboma ailanthi, 78. 
Pboma armeniacae, 222. 
Plioma asparagi, 147. 
Pboma lanceolata, 147. 
Pboma mamillariae, 81. 
Phoma media, 147. 
Phoma Thermopsidis, 65, 84. 
Phragmidium, 105. 
Pbragmidium fragariae, 80. 
Pliragmidium potentillae, 82. 
Pbragmidium sauguisorbae, 162. 
Pbragmidium speciosum, 91. 
Pbragmidium subcorticium, 32, 80, 85,162. 
Phycomycetes, 101. 
Phyllactinia suffulta, 81, 83,193. 
Pbyllosticta, 151. 
Pbyllosticta altbaeina, 151. 
Phyllosticta calaminth,®, 145. 
Pbyllosticta circumcissa, 222, 223. 
Pbyllosticta cirsii, 79. 
Phyllosticta Commonsii, 146. 
Pbyllosticta cornicola, 148. 
Phyllosticta desmodii, 146. 
Phyllosticta deutzias, 146. 
Phyllosticta fraxini, 142,145. 
Pbyllosticta fraxinicola, 145. 
Phyllosticta Halstedii, 146. 
Phyllosticta humuli, var. major, 145. 
Phyllosticta hydrangea, 145. 
Pbyllosticta ipomceae, 161. 
Phyllosticta maclur^e, 145. 
Pbyllosticta maculitormis, 106. 
Pbyllosticta nebulosa, 148. 
Phyllosticta orontii, var. advena, 146. 
Phyllosticta palmetto, 146. 
Pbyllosticta phomiformis, 79. 
Phyllosticta pyrolas, 145. 
Phyllosticta rhei, 145. 
Pbyllosticta syringae, 146. 
Phyllosticta variegata, 145. 
Pbyllosticta vindobonensis, 222. 
Phyllosticta viridis, 142,145. 
Pliysalospora, 45. 
Pliysalospora megastoma, 81. 
Physcuum nodulosum, 186. 
Physarum Sehumacheri, 187. 
PlI YSARUM SCYPHOIDEB, 186, 187. 
Phytophthora cactorum, 221. 
Pbytopbtborainfestans,7, 158,160, 178, 202, 221, 227. 
Phytophthora phaseoli, 221. 
I'lasmodiopbora, 111. 
Plasmopara viticola, 160. 
