326 



INDEX 



Peridermium Pini, 172, 175 



in regard to turpentine, 51 

 acicola, 172 

 corticola, 172 

 Strobi, 175 



Peridium of Uredineae, 1 53 

 Perithecium of Pyrenomycetes, 72 

 Peronospora Sempervivi, 58 



viticola, 65 

 Peronosporeae, 57 

 Persica vulgaris, Exoascus deformans 



on, 132 



Pestalozzia Hartigii, 136 

 Peziza aeruginosa, 42, 224 

 calycina, 117, 139 

 ciborioides, 130 

 Fuckeliana, 130 

 Sclerotiorum, 130 

 Willkommii, 117, 299 



in regard to moisture, 46 

 Pezizae, 117 

 Phacideas, 105 



Phanerogams, Injuries due to, 23 

 Phelloderm, 226 

 Phellogen, 226 

 Phoma abietina, 138 

 Phragmidium incrassatum, 1 56 

 Rubi Idaea, 156 

 subcorticum, 156 

 Phycis abietella, 175 

 Phycomycetes, 57 



Formation of spores by, 44 

 Phyllactinia, 70 

 Phylloxera vestatrix, 83 

 Physalopsora Bidwellii, 103 

 Phytophthora Fagi, 58 

 infestans, 36, 64 

 omnivora, 58 



a facultative saprophyte, 47 

 its action on starch, 52 

 its manner of spreading, 49 

 vitality of oospores of, 45 

 Picea, see also Spruce. 



Menziesii, Septoria parasitica on, 



146 

 Sitkasnsis, Rhizina undulata on, 



125 



Pileus, 35 



Pine, Dematophora necatrix on, 82 

 Eraphomyces granulatus on, 7 1 

 Hysterium pinastri on, no 

 Nectria Cucurbitula on, 89 

 New parasite of, 147 

 Rosette shoots of, 240 

 Black Austrian, Disease of, 140 

 Mountain, Herpotrichia nigra on, 

 76 



Pine, Scotch, see Pinus sylvestris 

 "Weymouth, see Pinus Strobus 

 Beauty moth, 175 

 leaf blight, 1 1 1 

 twist, 1 66 



in regard to aspens, 9 



moisture, 46 



Pinus halepensis, Bacterial disease of, 

 38 



Gymnosporangium Sabinae on, 



. J 5 8 . 



rigida in regard to stool-shoots, 



262 



Strobus, Bark-drought of, 295 

 Hysterium brachysporum on, 



117 



Peridermium on, 175 

 Polyporus Schweinitzii on, 198 

 Restocking diseased areas with, 



116 



Rhizina undulata on, 125 

 Withering of the leaves of, 



in 

 sylvestris, see also Pine 



Peridermium Cornui on, 175 

 Polyporus Schweinitzii on, 



198 



Plant-food in soil, 270 

 Planting, Deep, 278 

 Plants, Importance of rejecting weak, 



22 



Injuries due to, 20 

 Plasmodiophora Alni, 39 



Brassicae, 39 

 Plasmolysis, 288 

 Platanus, Gloeosporium nervisequium 



on, 140 



Plowrightia morbosa, 102 

 Plum, see also Prunus 



Black-knot of, 103 

 Plums, Mock, Pocket, or Starved, 



131 



Poa pratensis, Bunt on, 68 

 Pocket plums, 131 

 Poisons, Plant, 279, 301 

 Polyporei, Preventive measures 



against, 206 

 Polyporus betulinus, 206 



borealis, 42, 55, 196 



dryadeus, 201 



fomentarius, 206 



fulvus, 194 



Hartigii, 180, 194 



igniarius, 51,201 



laavigatus, 206 



mollis, 198 



Schweinitzii, 53, 56, 198 



