588 



DISEASES OF CULTIVATED PLANTS 



Phytopthora, 123. 



infestans, 123. 



omnivora, 127, 128. 



phaseoli, 130. 



syringae, 561. 



Phytoptus carinatus, 543. 



theae, 543. 



Pilobolus, 19. 

 Picus major, 536. 



medius, 536. 



Pine trametes, 368. 

 Placosphaeria onobrychidis, : 



slellatarum, 280. 



Plasmodiophora alni, 522. 



brassicae, 524. 



californica, 61. 



vitis, 60, 65. 



Plasmopara, 118. 



cubensis, 121. 



densa, 122. 



nivea, 122. 



pygmaea, 122. 



vilicola, 119. 



Pleospora, 243. 



albicans, 243. 



gummipara, 244 



trichostoma, 246. 



Pleurotus atrocoeruleus, 363. 



corticatus, 363.' 



mitis, 363. 



ostreatus, 



saligniis, 363. 



ulmarius, 363. 



Plowrightia, 211. 



morbosa, 213. 



ribesia, 212. 



Pluteus cervinus, 363. 

 Podospha 



oxyai 1 ' 1 1 5. 



ribis, 213. 



111 1 (6. 



Polygonaceae, hi. 



Polyporus, 377. 



adustus, 387. 



k tulinus, 379. 

 borealis, 1 



destructor, 381. 



dryadeus, 380. 



fulvus, 377. 



giganteus, 382. 



hispidus, 378, 385. 



salignus, 381. 



schweinitzii, 385. 



spumeus, 381. 



squaniosus, 384. 



sulphurous, 382. 



Polystigma, 178. 



257- 



Polystigma rubrum, 178. 

 Poria, 369. 



laestadii, 370. 



subacida, 369. 



vaporaria, 369. 



Postgenital fusion, 45. 

 Potassium sulphide, 56. 

 Potato bacteriosis, ^13. 

 Powdery mildew of cherry, 145. 



of vine, 154. 



Primary cause of disease, 3. 

 Primula elatior, 413. 

 Protomyces, 88. 



ari, 89. 



concomitans, 89. 



macrosporus, 88. 



menianthis, 89. 



pachydermus, 89. 



purpureo-tingens, 89. 



rhizobius, 88. 



Pruning, 28. 



dangers of, 28. 



self, 27. 



Psathyrella disseminata, 362. 

 Pseudomonas campestris, 510, 512. 

 flourescens exitiosus. 519. 



iridis, 519. 



stewarti, 512. 



syringae. 



Pseudope :i :a, 277. 



1 'So. 



cerastiorum, 280. 



divergens, 278. 



medicaginis, 279. 



radians. 280. 



ranunculi. 280. 



repanda, 280. 



ribis, 278. 



trifolii, 277. 



Psilocybe, 361. 



henningsii, 361, 



spadicea, 362. 



Ptyi I utiacus, 384, 



I 'in 1 inia, 297. 



arenariae, 1 1 1 



asparagi, 



bullata, 307. 



chrysanthemi, 299. 



coronata, 306. 



dispersa, 306. 



gem o- 



glumarum, 306. 



graminis, 301. 



iridis, 309, 336. 



malvacearum, 310. 



menthae, 298. 

 obtegens, 308. 



pazschkei, 312. 



