450 



PLANT DISEASES 



Morel, tree, 163. 

 Moth-borer, 104. 

 Mutualism, 29. 

 Mycelium, 6. 



hibernating, 87. 



Mycogone, 134. 

 Mycoidea parasitica, 343. 

 M}Coplasma, 246. 

 Mystrosporium abrodens, 326. 



adust um, 325, 441. 



alliorum, 326, 441. 



Myxogastres, 29. 



Negator decretus, 327, 442. 

 Nectria ditissima, 127. 



cinnabarina, 131, 373. 



cucurbitula, 130, 373. 



goroshankiniana, 132, 374. 



ipomeae, 132, 374. 



pandani, 293, 374. 



vandae, 132, 374. 



New Zealand white root-rot, 115. 

 Nitrate of soda, 45. 

 Nitrification of soil, 31. 



Oedocephalum fimetarium, 



384. 



Oedomyces leproides, 225, 405. 

 Oidium tuckeri, 92. 

 Oipidium brassicae, 53, 349. 

 Oospora abietinum, 298, 433. 



■ scabies, 299, 433. 



Oospores, 10. 



Ozonium auricomum, 346. 



Paraffin, 40, 

 Parasites, 5. 

 Partridge wood, 172. 

 Peridermium cerebrum, 267. 



conorum, 266. 



cornui, 235, 422. 



coruscans, 266, 422. 



elatinum, 266, 423. 



filamentosum, 264. 



giganteum, 267. 



harknessi, 264. 



ornamentale, 264. 



pini, 261, 264. 



strobi, 233. 



thomsoni, 267. 



Permanganate of potash solution, 

 preparation of, 38. 



Peronospora cubensis, 80, 356. 



effusa, 79, 355. 



gangliformis, 74. 



hyoscyami, 81, 357. 



• maydis, 81, 357. 



parasitica, 79, 355. 



sachtii, 79, 356, 



schleideni, 75, 356. 



■ trichotoma, 78, 355. 



trifoliorum, 78, 356. 



violae, 80, 356. 



Pestalozzia guepini, 295, 432, 



hartigii, 297, 432. 



Peziza, 159. 



vesiculosa, 161, 384. 



— — willkommii, 145. 

 Pholiota adiposa, 207, 389. 



aurivella, 208, 388. 



destruens, 208, 389. 



squarrosa, 208, 388. 



Phoma abietina, 275. 



betae, 109. 



hennebergii, 272, 425. 



sanguinolenta, 270, 424. 



• solani, 272. 



tabifica, 109. 



tuberculata, 271. 



Phragmidium rubi-idaei, 258, 418. 



subcorticatum, 260, 419. 



Phycomycetes, 53. 

 Phyllactinia sufifulta, 98, 361. 

 Phyllosticta apii, 270. 

 prunicola, 268, 424. 



Phylloxera, 69. 



Phytophthora cactorum, 66, 353. 



infestans, 62, 353. 



omnivora, 66, 68, 353. 



phaseoli, 65, 353. 



Pistillaria flavida, 445. 



Plasmodiophora brassicae, 334. 



californica, 338. 



vitis, 338. 



Plasmodium, 30. 



Plasmopara viticola, 8, 69, 354. 



Ploeospora gummipara, 122, 371, 



Plowrightia morbosa, 136, 375. 



ribesia, 139, 376. 



Pocket plums, 85. 



Podosphaera oxyacantha, 98. 



Polyporus betuhnus, 189, 392. 



borealis, 197, 392. 



dryadeus, 197, 391. 



