INDEX 
281 
Phytoptus galiobus, 235 
,, goniothorax, 207 
,, macrochelus, 215 
,, myriadeum, 215 
,, padi, 198 
,, pyri, 204 
,, ribis, 195 
,, sanguisorbae, 202 
,, similis, 197 
,, taxi, 132 
,, tetratrichus, 217 
,, tiliarius, 217 
,, viburni, 237 
Picea exceLa, 133 
,, onentalis, 84, 134 
Pimpinella Saxilraga, 222 
Pine, Scotch, 51, 54, 117, 132, 133 
“ Pineapple” galls, 81 
Pinks, 103 
Pinus sylvestris, 54, 132 
Plantaginaceae, 233, 234 
Plantago lanceolata, 54, 233 
,, major, 233 
,, maritima, 234 
,, media, 233 
Plantain, Greater, 233 
,, Hoary, 49, 233 
,, Ribwort, 49, 54. 233 
,, Seaside, 49, 234 
Plasmodiophora alni, 158 
,, brassicae, 12, 121, 
188, 191, 192, 
194 
Platyptilia isodactyla, 55, 246 
Pleurotus ostreatus, 61 
Pliny the Elder, 1, 78 
Plowright, Dr., 7 
Poa annua, 137 
,, nemoralis, 138 
,, pratensis, 138 
Pocket galls, 49 
Pocket plums, 123 
Polygonaceae, 179-182 
Polygonum amphibium, 180 
,, aviculare, 54, 180 
,, bistorta, 180 
,, Convolvulus, 179 
„ Hydropiper, 180 
,, lapathifolium, 180 
,, Persicaria, 180 
P.»lyporus, 61 
“ Polythalamous ” (definition of), 25 
Pontania Bridgmanii, 148 
Pontaniafemoralis, 3i, 145, 150, 151 
,, leucosticta, 21, 142 
,, pedunculi, 21, 22, 64, 147, 
150 
,, proxima, 21, 22, 142, 143, 
148, 150, 152 
,, salicis, 21-23, 145, 146 
,, scotaspis, 21 
,, vacciniella, 23, 224 
,, vesicator, 21, 145,146, 151 
,, viminalis, 21, 145, 146 
Poplar, Black, 54, 55, 154, 155 
>> Grey, 55, 152 
,, White, 55, 152 
Poppy, Common, 28, 103, 187 
,, Smooth-headed, 28, 1S7 
Populus alba, 55, 152 
,, canescens, 55, 152 
,, fastigiata, 87 
,, nigra, 54, 55, 87, 154, 155 
,, tremula, 54, 153, 154 
Potatoes, “ black scab ” of, 122 
Poterium Sanguisorba, 202 
Potter, Professor M. C., 122 
Preserving and collecting galls, 
notes on, 14, 15 
Privet, Common, 226 
Protomyces chrysosplenii, 195 
,, macrosporus, 120, 222, 
223 
,, menyanthis, 226 
,, microsporus, 186 
,, pachydermus, 250 
Prunus Cerasus, 198 
,, domestica, 12 
,, insititia, 197 
,, Padus, 198 
,, spinosa, 196 
Pseudo-galls, 52 
Pseudohormomyia granifex, 139 
Psylla buxi, 88, 215 
„ crataegi, 207 
„ pyrisuga, 205 
Psyllidae, 77, 87, 88 
1 Psyllioides napi, 188, 189 
Psyllopsis fraxini, 88, 225, 226 
Pteris aquilina, 130 
. Pterophorus microdactylus, 54, 241 
Puccinia adoxae, 237 
,, aegopodii, 222 
,, apii, 221 
,, calthae, 186 
,, caricis, 119, 179 
