INDEX OF HOSTS 



599 





Ornithogalum umbellatum, 103. 

 Orobus, 113. 

 Oryza sativa, 347. 

 Ostrya virginiana, 363. 



Paeonies dropping disease, 267. 



Paeony, 321. 



Palm, betel nut, 129. 



bud rot of, 105. 



smut, 350. 



Palmyra palm, 105. 

 Pandanus, 433, 508. 

 Panicum, 92. 347, 493. 

 Paris quadrifolia, 349. 

 Parsley, 307. 



leaf-scorch, 425. 



rot, 565. 



Parsnip leaf blight, 486. 

 Paspalum, 493. 

 Paulownia tomentosa, 438. 



witches' brooms of, 438. 



Pavetta inriica, 522. 

 Pea leaf blotch, 474. 



nut, 567. 



rust, 296. 



seedling blight, 476. 



spot, 431. 



Peas, 159, 160, i6i, 431. 

 Peach, 308, 440, 452, 454, 483. 



leaf curl, 138. 



Pear, 317, 318, 378, 392, 410, 



45 2 . 



5. 423, 



4^4- 



54. 

 leaf blister mite, 540. 



cluster-cups, 317 



fleck, le/f. 



spot, 2j, 



leaves, 1^4: 



scab, 208. 



Pelargonium, 441. 

 Pepper wilt, 187. 

 Petunias, 266. 

 Phillyrea latifolia, 337. 

 Phleum pratense, 307. 

 Phlox stem canker, 420. 

 Phoenix dactylifera, 350. 

 Phragmites communis, 299. 

 Phyllostachys, 343. 

 Picea, 374. 



excelsa, 284, 285. 



menziesii, 428. 



morunda, 324. 



pungens, 573. 



rubens, 385. 



silkaensis, 254. 



Pigeon-pea wilt, 187. 

 Pimpinella, 122. 

 magna, 95. 

 Pine blister blight, 320. 



Pine branch twist, 325. 



cluster-cups, 331. 



cone fungus, 336. 



disease, 574. 



leaf cast, 249. 



fungus, 222, 258. 



pitch, 321. 

 Pineapple heait-rot, 63. 

 Pink, 311. 



rot, 467. 



rust, 311. 



Pinus, 374, 574. 



contorta, 322. 



densiflora, 324. 



-excelsa, 284, 322. 



insignis, 322, 331, 574. 



lambertiana, 320. 



laricio, 281. 



longifolia, 322. 



maritima, 331. 



pinaster, 574. 



ponderosa, 322. 



pumilio, 281. 



sabiniana, 322. 



silvestris, 258, 281, 320, 331, 



57 A- 



strobus, 254, 320, 331, 386, 



574- 



thunbergii, 324. 



Pirus aria, var. Kamaoensis, 318. 



miyabei, 318. 



Pisum sativum, 476. 

 Pitch pine, 321. 

 Plane leaf scorch, 201. 

 Platanus acerifolia, 203. 



occidentalis, 203. 



orientalis, 203. 



Plectronia campanulata, 329. 

 Plum, 213, 378, 392, 410, 455. 



leaf blight, 446. 



blister, 178. 



rust, 308. 



leaves of, 146. 



scab, 474. 



tree, 308. 



Plum-pockets, 139. 

 Poa, 92. 



annua, 88, 247. 



Polygonum chinense, 344. 

 Poplar, 259, 327, 363, 382. 



black, 144. 



twig disease, 240. 



Poppy, in. 



Populus canadensis, 363. 



tremula, 143. 



Potato, blackleg of, 514. 



black scab of, 573. 



brown rot of, 467. 



