402 INDEX OF HOST-PLANTS MENTIONED 
Populus (cont.) 
nigra (serotina) 348, 349 
ontariensis (candicans) 349 
pyramidalis (italica) 349 
tremula 350, 351, 352 
Potentilla 
argentea 292 
erecta 302 
Fragariastrum 290 
sterilis 290 
Tormentilla 302 
verna 292 
Poterium Sanguisorba 293, 387 
Primula 
acaulis (vulgaris) 180 
elatior 180 
veris 180 
Prunella vulgaris 174, 278 
Prunus 
domestica 209 
insititia 209 
Padus 369 
spinosa 209 
Pulicaria dysenterica 123 
Pulmonaria montana 262 
Pyrola 
minor 312, 368 
rotundifolia 312, 368 
Pyrus 
Aucuparia 308, 330 
communis 306, 307, 308 
torminalis, etc. 331 
Quercus pedunculata 316 
Ranuneulus 
acris 126, 271 
auricomus 127 
bulbosus 126, 127, 272 
Ficaria 107, 115, 127 
Lingua 387 
repens 126, 127, 272 
Rhamnus 
catharticus 209, 256 
Frangula 254 
Rheum officinale 274 
Rhinanthus Crista-galli 326 
Rhododendron 
dahuricum 385 
ferrugineum 3885 
hirsutum 384 
Ribes 
alpinum 343 
Grossularia 248, 342, 343 
nigrum 243, 317, 342 
rubrum 212, 317, 342 
Rosa 
alpina 295 
canina 294, 388 
spinosissima 294 
Rubus 
cesius 297 and p. xii 
fruticosus 296, 297, 301 and p. xii 
Ideus 299 
saxatilis 297 
Rumex 
Acetosa 116, 223, 275 
Acetosella 116, 118 
acutus 274 
conglomeratus 115, 274 
crispus 115, 274 | 
Hydrolapathum 115, 274 
nemorosus 115 
obtusifolius 115, 274 
Sagina 
nodosa 219 
procumbens 221 
Sagittaria sagittifolia 390 
Salicornia 
europea 114 
herbacea 114 
Salix 
alba 346 
aurita 339, 340, 341, 344 
Caprea 339, 340, 341 
cinerea, 340, 341 
fragilis 341, 345 
herbacea 346 
nigricans 341 
pentandra 345 
purpurea 341, 343 
repens 344 
reticulata 341 
Smithiana 341 
viminalis 341, 342 
Sanguisorba officinalis 303 
Sanicula europea 183 
Saponaria ocymoides 109 
Saxifraga 
Aizoon 213 
Cotyledon 213 
elatior 214 
granulata 213, 357 
longifolia 213 
stellaris 213 
umbrosa 213 
Scabiosa 390 
Scilla 
bifolia 121 
campanulata 121 
nutans 121 
Scirpus 
lacustris 240 
maritimus 125 
Scolopendrium vulgare 378 
Scrophularia 
aquatica 87 
nodosa 87 
Secale cereale 252, 259, 261 
