INDEX. 



271 



Phvllosticta Petunia, 61 



Phillyreae, 184 

 phillyrina, 184 

 pirioola, 123 

 pirina, 123 

 Podophylli, 16 

 primalcecola, 53 

 prunicola, 131 

 Pyrorum, 110 

 Rhamni, 188 

 rhamnigena, 188 

 Rhododendri, 177 

 rbododendricola, 177 

 ribicola, 144 

 Roumeguerii, 181 

 ruscicola, 185 

 Saccardoi, 177 

 sanguinea, 185 

 sidsecola, 192 

 Stephanotidis, 168 

 syriaca, 192 

 Syringie, 191 

 syringicola, 192 

 tenerrima, 30 

 tinea, 181 

 tineola, 181 

 Trollii, 13 

 Tropaeoli, 41 

 Violae, 23 

 Vitalba, 21 

 viticola, Sacc, 153 

 viticola, B. & C, 153 

 Vitis, 153 

 Phytophthora infestans, 93, 97 

 omnivora, 212 

 Pbaseoli, 249 

 Piggotia astroidea, 205 

 Pine brancb twist, 225 

 „ cluster-cups, 224 

 ,, leaf-cast, 227 

 „ Witches' Broom, 224 

 Pink mould on Deutzia, 193 

 Pinks, disease of, 29, 30, 31 

 Pinus Pinea, 224 



„ sylvestris, 224 

 Plane leaf anthracnose, 203 

 „ „ nerve antbracnose, 203 

 „ spot, 204 

 Plasmodiophora Alni, 217 



,, Brassicae, 83, 244 



„ californica, 161 



Vitis, 159 

 Plasmopara cubensis, 101 

 „ nivea, 90 



pygmaea, 13 

 „ viticola, 159 



Plceospora Kentiie, 176 

 Plowrightia morbosa, 131 

 Plum, American black knot, 131 

 „ black mould, 125 

 „ gummosis, 125 

 „ leaf-blotch, 127 

 „ „ shot-hole fungus, 131 

 „ pockets, 126 t*- i 

 „ powdery mildew, 125 

 „ tree mildew, 127 

 i, „ pustule, 113 

 „ rust, 126 

 Poa, bunt on, 239 



Poa, grass rust, 239, 241 

 Podisoma foliicola, 197 

 Podophyllum peltatum, 16 

 Podosphaera clandestina, 195 

 ,, Oxyacanthae, 194 



„ tridactyla, 127 



Polyactis cana, 64 

 Polypore, currant, 146 

 ,, gooseberry, 146 



,, on larch, 227 



„ „ oak, 210 



„ Scotch fir, 227 

 „ tinder, 142 



„ on Weymouth pine, 227 



Polyporus betulinus, 214 

 „ dryadeus, 210 

 ,, hispidus, 20(5 



„ Schweinitzii, 227 



„ sulfureus, 208 

 Polystigma rubra, 127 

 Polystigmina, 127 

 Polythrincium Trifolii, 247 

 Poplar leaf anthracnose, 218 

 „ „ blister, 220 



„ spot, 218 

 „ Lombardy disease, 220 

 ,, mealy mildew, 223 

 „ rust, black, 220 

 ,, ,, white, 219 

 „ sulphury wood-rot, 208 

 Poppy rot-mould, 22 

 Populus alba, 218, 219, 220 

 „ balsamifera, 220 

 italica, 218, 220 

 nigra, 218, 220 

 tremula, 219, 220 

 Potash permanganate, 254 

 Potassium sulphide, 254 

 Potato, American scab, 92 

 ,, bacteriosis, 95 

 „ black ring, 95 

 „ collar rot, 95 

 „ disease, 93 

 „ hyacinth bacillus on, 70 

 „ leaf-curl, 95 

 ,, Macrosporium, 95 

 ,, Peziza, 94 

 ,, Rhizoctonia, 94 



rot-mould, 93, 97 

 „ scab, 92 

 „ sclerote, 94 

 „ spindle-mould, 91 

 „ spot-mould, 95 

 „ tumour, 92 

 Powder, David's, 254 



,, fungicides, 254 

 Powdery maize smut, 236 



„ mildew, buckthorn, 189 

 „ „ hawthorn, 194 



„ „ honeysuckle, 50 



„ „ plum and sloe, 125 



i, ii vine, 157 



Primrose cluster-cups, 54 



„ evening, leaf-spot, 46 



„ parasites, 53 



„ rot-mould, 57 



„ rust, 55 



„ simple brand, 55 



„ smut, 54 



