28o 



BRITISH GALLS 



Papaver Rhaeas, 103, 187 

 ,, somniferuin, 103 



Papaveraeeae, 187 



Paris Daisy, crown-gall on, 123 



Parsnip, 223 



" Parthenogenesis" (definition of), 30 



Pazlavsky, 29 



■' Pea galls " on oak leaves, 37-39 



Peach, 122 



Pear Midge, 75 

 ,, Tree, 205, 206 



Pear-leaf Blister mite, 105 



Pearl wort, 184 



Pedicularis sylvatica, 233 



Pemphigus affinis, 87, 155 



bursarius, 87, 155 

 iilaginis, 242 

 pallidas, 177, 178 

 spirothecae, 87, 155 

 ulmi, 177 



Pennycress, 193 



Pepperwort, Common, 193 

 „ Whitlow, 193 



Peridermium elatinum, 7, 13, 116, 



i;33. 134 



„ pini, H7, 133 



Perrisia acrophila, 225 

 affims, 219 

 alpina, 183 

 aparines, 236 

 capitigena, 214 

 cardaminis, 188, 189 

 carpini, 159 

 cerastii, 183 

 crataegi, 11, 207 

 epilobii, 220 

 filicina, 9, 66, 130 

 (ilipendalae, 64 

 fraxini, 225 

 galeobdolontis, 230 

 galii, 11,67, 68, 234 

 galiicola, 235 

 genisticola, 208 

 glechomae, 65, 229 

 hyperici, 218, 219 

 ignorata, 210 

 Inchbaldiana, 66, 144 

 inclusa, 137 

 lathyricola, 214 

 lotharingiae, 1 83 

 loticola, 212 

 lychnidis, 183 

 mali, 206 



Perrisia marginem-torquens, 66,143, 

 149 

 muricatae, 139 

 onobrychidis, 213 

 papaveris, 187 

 persicariae, 180 

 plicatrix, 199-201 

 pteridicola, 66 

 pyri, 20s 



ranunculi, 185, 186 

 rosarum, 202, 203 

 serotina, 218 

 stachydis, 229 

 terminalis, 66, 143, 144 

 tiliamvolvens, 217 

 trachelii, 241 

 trifolii, 211, 212 

 tubicola, 209 



ulmariae, 63, 64, 198, 199 

 urticae, 9, 65, 179 

 veronicae, 11, 64, 65, 232 

 viciae, 313, 214 

 violae, 219, 220 

 Peucedanum sativum, 223 

 Peyritsch on experimental galls, 6, 



90, 102, 103 

 Phalonia atricapitana, 55, 245 

 Fhleum pratense, 1 1 2 

 Phloeodes tetraquetrana, 155, 157 

 Phoibia brassicae, 75, 191, 192 



„ seneciella, 246 

 Phorodon galeopsidis, 230 



„ humuli, 196 

 Phragmites communis, 137 

 Phyllaphis fagi, 176 

 Phyllerium, 93 



„ on fossil maple leaves, 



98 

 „ rubi, 200 



„ tortulqsum, 156, 157 



Phyllocoptes acericola, 94, 97, 215 

 „ fraxini, 94, 225, 226 



„ magairostis, 144 



,, oblongus, 96 



,, pedicularis, 233 



„ populi, 154 



Physoderma heleocharidis, 139 

 Fhytoptus aceris, 215 

 „ ajngae, 230 

 „ coryli, 160 

 „ crataegi, 207 

 „ fraxini, 226 

 „ galii, 2^6 



