518 
Phytophthora infestans, re- 
sistance of spores, 346. 
— —, simple sporophores, 
47*. 
— —, swarm-spores, 108*, 
— —, taking up of colouring 
matter, 14. 
— omnivora, 135. 
— —, parasitism, 359, 365, 
385. 
—, parasitism, 367, 389, 392. 
—, simple sporophores, 47. 
Pietra fungaja, 42. 
Pilacre Petersii, 335. 
Pilaira, 150, 152. 
—., discharge of spores, 83. 
Pileus, 287. 
— in Hymenomycetes, 48. 
Pilobolus, 152, 155. 
— anomalus, 150. 
— —, detaching of sporangia, 
83. 
—, conditions of germina- 
tion, 350. 
— coloured fatty matters, 7. 
— crystallinus, 150. 
— —, abjection of sporangia, 
72, 83. 
—, formation :of spores, 74, 
75+ 
—, membrane, 12. 
—, mode of life, 357. 
— oedipus, 163. 
— —, abjection of sporangia, 
72*, 83. 
——, resistance of spores, 
346. 
—, structure of spores, 106. . 
Piptocephalideae (Piptoce- 
phalidei), 149, 151, 153. 
Piptocephalis, 147, 149, 153, 
155. 
—, formation of spores, 67. 
— Freseniana, 150, 153*. 
— —, conjugation, 149*. 
— —, haustoria, 20. 
—, parasitism, 360, 363, 385. 
Pistillaria hederaecola, scle- 
rotia, 42. 
— micans, sclerotia, 42. 
Pits, 13. 
— in spore-membrane, 100. 
Pityriasis versicolor, 376. 
Placodium, 223. 
—, calcium oxalate, 409. 
— cartilagineum, incrusta- 
_ tions, 409. 
—, distribution of Algae in 
thallus, 404. 
—, structure of thallus, 404, 
Plasmodia, 423. 
—, movement, 449. 
—, nutrition, 451. 
—, phenomena of life, 449, 
INDEX. 
Plasmodiophora, 444. 
— Brassicae, 448. 
Plastids, 7. 
Plectopsora, structure of 
thallus, 412, 413. 
— botryosa, structure of 
thallus, 414*. 
Pleomorphism, 126, 238. 
Pleospora, 186, 191, 200, 
235, 239, 245, 248, 271. 
— Alternariae, 230, 255. 
— —, development of pyc- 
nidia, 247*. 
— Clavariarum, 244. 
—, ejection of spores, 95. 
—, formation of gonidia, 
66. 
— herbarum, 220, 229, 230, 
247, 255. 
— —, compound spores, 98. 
— —, development of spores, 
79. 
— —, ejection of 
95”. an 
— —, germination, 114. 
— polytricha, 245, 247. 
— sarcinulae, 230. 
—, sclerotioid | compound 
sporophores, 43. 
Pleurococcus in Lichen- 
thallus, 397. 
Pleurostoma, 191. 
Pleurotus, 297. 
Podaxon, 317, 318. 
— carcinomatis, capillitium- 
threads, 318*. 
— pistillaris, 318*. 
Podetia (podetium), 222,402. 
Podosphaera, 198, 201, 233, 
235, 236, 237. 
— Castagnei, development 
of spores, 79. 
— —, development of sporo- 
phores, 201*, 226*. 
— —, haustoria, 19*, 
— pannosa, 226*. 
Pollinaria, 305. 
Polyactis, 252. 
Polyblastia, 223. 
— rugulosa, Algae of thallus, 
409. 
— —, hymenial Algae, 400, 
401. 
— —, structure of thallus, 
400, 
Polydesmus, 229. 
— exitiosus, parasitism, 362. 
—, spores, 68. 
Polyphagus, 169. 
— Euglenae, 162*, 
— —, parasitism, 361. 
— parasiticus, 164. 
—, Swarm-spores, 107. 
Polyplocium, 337. 
spores, 
Polyporeae (Polyporei), 288, 
333, 337. ; 
—, annual layers in com- 
pound sporophores, 57. 
—, duration of growth in 
compound sporophores, 
51. 
Polyporus, 288, 301, 303, 
307. 
— abietinus, mycelial mem- 
branes, 22. : 
— annosus, parasitism, 384. 
— —, structure of sporo- 
phore, 57. 
— borealis, 335. 
— —, parasitism, 384. 
—, cellulose, 13. 
—, clamp-connections, z. 
— destructor, abjection of 
spores, 73. 
— dryadeus, parasitism, 384. 
— fomentarius, cellulose, 8. 
— —, membranes, 12. 
— —, periodic growth of 
compound sporophores, 
57. 
— —, structure of sporo- 
phore, 58. 
— fulvus, 307. 
— —, parasitism, 384. 
— —, structure of sporo- 
phore, 58. 
—, growth of compound 
sporophore, 50, 57. 
— hirsutus, hairs, 59. 
— hispidus, hairs, 59. 
— igniarius, 303, 307. 
— —, cellulose, 8. 
— —, parasitism, 384. 
— —, periodic growth of 
compound sporophore, 57. 
— lucidus, structure of spo- 
rophore, 59*. 
—, membranes, 12. 
— mollis, parasitism, 384. 
— obvallatus, 337. 
— officinalis, cellulose, 8. 
— —, membranes, 12. 
— —, secretion of resin, Io. 
— ptychogaster, 334, 335. 
— Ribis, periodic growth, 
57. 
— sulphureus, 
384. 
— tuberaster, mycelium, 42. 
— umbellatus, 304. 
— vaporarius, parasitism, 
384. 
— versicolor,membranes, ı2. 
— volvatus, 337. 
— zonatus, membranes, 12. 
— —, Periodic growth, 57, 
Polysaccum, 309, 326, 327. 
—, formation of spores, 63. 
parasitism, 
