INDEX. 



ccxcvii 



Pears, packing of, 471 

 sterility of, 481 

 Peas at Wisley, 1911, 403 

 Pecan leaf-blotch, 472 

 Pedicularis recutita, 66 

 Pelargonium, ' Lord Bute,' A.M., cxl 



„ peltatum, 275 



„ ' Maxim Kovalesky,' A.M., 



„ scented, 103 



sp., 103 

 Pemphigius populicaulis, 274 



„ populi-transversus, 274 



,, tesselatus, 647 

 Pennisetum, sp., 487 

 Pennyroyal, 529 



Pentatoma ligata injuring cotton, 24 5 



„ sayi injuring cotton, 246 

 Perfumery plants, 469 

 Peridermium cerebrum, 472 



fructigenum, 282, 283 

 „ Harknessii, 472 



Peckii, 282 

 Pernettya mucronata, 53, 54 

 Persica Davidiana, 234 

 Persicaria, 45 



„ seedling, 46 

 Petasites, 291 



„ niveus, 66 

 Petrocallis, 86 

 Petroselinum sativum, 529 



,, „ diseased, 119 



Petunia, 56 



Phaedranassa Carmioli, 473 

 Phalaenopsis ' Hebe,' 473 

 Philadelphus Lemoinei 'Virginal,' F.C.C., 

 cxxxvii 

 ' Virginal,' 270 

 Philesia buxifolia, 84 

 Phlegethontius quinquemaculata, 288 



sexta, 288 

 Phlox diseases, 275 



„ variegated, 271 

 Phlyctaena Magnusiana, 119 

 Phoma betae, 238 

 „ sp., 276 

 „ stictica, 273 

 Phomopsis Stewartii, 274 

 Phormium tenax, 63 

 Phosphate deposits in U.S.A., 271 

 Phragmites communis, time to cut, xxvii 

 Phyllachora pomigena, 645 

 Phyllocactus stem, ccxxi 

 Phyllosticta betae, 273 



,, brassicae, ccxiii 

 ,, labruscae, 274 

 Phyteuma comosum, 86 



„ hemisphaericum, 84 

 „ humile, 86 

 Phytophthora infestans, 279, 382 

 Picea excelsa nidiformis, 473 



„ Omorica, 493 

 Pimpinella Anisum, 525 

 Pineapple cultivation, 271 



„ diseased, xxiv 

 Pineapples, dried, their preparation, 272 

 Pinguicula alpina, 68 

 Pinus Armandii, 272 

 „ Cembra, 68 



Pinus koraiensis, 97 

 „ Laricio, 454 



sp., attacked by Peridermium sp., 

 473 



,, sylvestris with witches' broom, 



ccxiii 

 „ Thunbergii, 97 

 Pisum, crosses in, ccxvii 



,, sativum, 111 

 Plagianthus betulinus var. chatamicus, 

 62, 64 



,, Lyallii, A.M., cxliv, cxlv 

 Plant diseases in Britain, 541 



in New York, 272 

 ,, ,, remedies for, 473 

 ,, ,, resistance and immunity, 

 473 



,, enemies and their destruction, 474 



,, -growing under calico, 272 

 " Plant-Life," by E. Warming, 436 

 " Plant Life in Alpine Switzerland," 



E. A. Newell Arber, reviewed, 187 

 " Plant Life on Land," by F. 0. Bower, 



reviewed, 436 

 " Plant Physiology," by B. M. Duggar, 



reviewed, 582 

 Plants given to Garden, &c., 1911, 590 



,, insect- catching, 474 

 Plasmodiophora brassicae, 273 

 Plasmopara pygmaea, 274 

 Platy ceriums, 276 



Platyclinis glumacea validae, B.C., Ixiii 

 Platycodon (Campanula) grandiflora, 254 

 Pleiocarpa mutica, 276 

 Plowrightia morbosa, 275 

 Plum attacked by Xyleborus dispar, 

 xxxiii 



„ ' Blackbird,' A.M., cxxvi 



„ diseases, 275 



,, -rust, its life-history, 638 



,, ' Vert's Violet,' A.M., ccxxvi, 

 ccxxvii 



„ weevil, 639 

 Plums, sterility of, 481 

 Plutella cruciferarum, 457 

 Poa chatamica, 60 

 Podesesia fraxini, 647 

 Podocarpus, sp., 52 

 Podosphaera leucotricha, 273 



,, oxyacanthae, 274 

 Polhnation in orchards, 237, 238, 276, 



350, 474, 531, ccxvi 

 Polygonum Aviculare, 45, 47 

 Bistorta, 66 

 Convolvulus, 46, 47, 48 

 ,, Persicaria, 45, 46 

 Polypodium vulgare var., xxviii 

 Polyporeae attacking trees, 288 

 Polystachya dendrobiifolia, 471 

 Pomegranate fruiting in open, ccxix 

 Pontia brassicae, 484 

 " Popular Garden Flowers," W. P. 



Wright, reviewed, 196 

 Populus deltoides, 274 

 Portulaca oleracea, 319 

 Potato ' Arduthie Early,' A.M., 570, 

 exxv 



' Balgownie Seedling,' A.M., 572, 

 ccxxiv 



