INDEX. 



Peltigera malacea, structure 



of thallus, 406. 

 , structure of thallus, 404, 



406. 

 Penicillium, 193, 198, 199, 



226, 232, 234, 239, 245, 



251, 254. 

 , abscision of gonidia, 66, 



70*. 



aureum, 206. 



, capacity of germination, 



348. 

 , conditions of germination, 



350. 

 , conditions of vegetation, 



353, 354- 

 , discharge of spores, 81, 



97. 

 , effect on substratum, 



358. 



, fatty matters, 7. 

 , formation of spores, 62. 

 , germination, in. 



glaucum, 204, 226. 



, abscision of gonidia, 



70*. 



-, capacity of germina- 

 tion, 344. 



, cell-nucleus, 6. 



, conditions of germina- 

 tion, 349. 



, mycelial membranes, 



21. 



, parasitism, 370, 380. 



, resistance of spores, 



347- 



, gonidiophores, 48. 



, sclerotioid compound 

 sporophores, 43. 



, secretion of ferment, 

 355. 



, simple sporophores, 46. 



, thallus, i. 



Perichaena, 435. 



liceoides, 423, 427, 428, 

 435, 44i, 448. 



Periconia, 252. 



, formation of spores, 66. 



Peridermium elatinum, 277, 



282. 

 , parasitism, 368, 388, 



390. 



Pini, parasitism, 388. 

 , structure of spores, 



100. 



Peridiola, 311, 320. 

 Peridium, 48, 193, 275, 



308. 



, inner, 311. 

 , outer, 311. 

 Periphyses, 192. 

 Peri plasm, 133. 

 Perithecia, 76, 187, 190, 239, 



401. 



Peronospora, 138, 232. 

 , abscision of spores, 72. 



Alsinearum, fertilisation, 



133*. 



arborescens, fertilisation, 



133*. 



Arenariae,parasitism,39i. 



calotheca, haustoria, 20*. 



densa, germination, 112. 

 , haustoria, 20. 



, parasitism, 393. 



, development, 134. 



, discharge of spores, 82. 



, membrane, 12. 



nivea, haustoria, 20. 

 , parasitism, 363, 393. 



parasitica, haustoria, 20. 

 , parasitism, 359, 363. 



, parasitism, 358, 386, 391. 



pygmaea, germination, 

 112. 



, haustoria, 20. 



, parasitism, 364. 



Radii, parasitism, 358, 

 364, 390, 391. 



, simple sporophores, 46, 



47. 



, thallus, r. 



Umbelliferarum, parasi- 

 tism, 363, 389. 



Valerianellae, 135. 



violacea, parasitism, 368, 



39, 39i. 



viticola, parasitism, 393. 

 Peronosporeae (Peronospo- 



rei), 132, 183, 232, 233, 



236. 



, absence of calcium, n. 

 , capacity of germination, 



343, 344, 349- 



, cell-nucleus, 6. 



, cellulose-membrane, 8. 



, conditions of germina- 

 tion, 350. 



discharge of spores, 82. 

 , formation of spores, 74, 



75- 



, germination, 113. 

 , haustoria, 20*. 

 , mycelium, 20*. 

 , parasitism, 359, 362, 386, 



393- 



, pleuroblastic, 20. 

 , resistance of spores, 345. 

 , resting state of spores, 



344- 



, swarm-spores, 109. 



, thallus, i. 



Pertusaria communis, ger- 

 mination, 114*. 



de Baryana, germination, 

 112*. 



fallax, calcium oxalate, 

 409. 



Pertusaria lejoplaca,develop- 



ment of spores, 78. 



, germination, 114*. 



, number of spores, 79. 

 , soredia, 415. 

 , structure of thallus, 405. 

 Peziza (see also Sclerotinia), 



189. 



abietina, 86. 



, ejection of spores, 86. 



, structure of spores, 



106. 



Acetabulum, develop- 

 ment of spores, 106. 



, ejection of spores, 85. 



, puffing of spores, 89, 



92. 

 , structure of spores, 77. 



aeruginosa, colouring mat- 

 ter, 8. 



Aglaospora, 343. 



arduennensis, 243. 



aurantia, fatty matters, 



7. 



, structure of spores, 



100. 



baccarum, sclerotium, 30, 

 41. 



benesuada, doubtful sper- 

 matia, 243*. 



bolaris, 243. 



, germination, 115. 



calycina, development of 

 spores, 78. 



Candolleana, sclerotium, 



3, 3i ? 32. 



ciborioides, sclerotium, 

 30, 41. 



confluens, 208. 



Development of spores, 



76,77*. 

 , ejection of spores, 86. 



convexula, ejection of 

 spores, 85, 86. 



, structure of spores, 



102. 



cupularis, ejection of 

 spores, 85, 86. 



Curreyana, desertion of 

 host, 388. 



, sclerotia, 33, 37, 41. 



Cylichnium, 243. 

 , germination, 115. 



, development of asco- 

 spores, 76. 



Duriaei, sclerotia, 37. 



Durieuana, 243. 



, desertion of host, 388. 



, sclerotia, 41. 



, ejection of spores, 89. 



Fuckeliana, 245, 254. 

 , abscision of spores, 



63, 72. 

 , cell-nucleus, 6. 



