CClviii PROCEEDINGS OF THE ROYAL HORTICULTURAL SOCIETY. 



Plant and environment, 197, 208 



associations and evaporation, 633 

 distribution, 219 

 growth and temperature, 356 

 " Plant Life," by S. H. Russell, 



reviewed, 600 

 " Plant Physiology," by L. Jost, 



reviewed, 125 

 " Plant Societies of Chicago and 



Vicinity, The," by H. C. Cowles, 



reviewed, 115 

 Plantago, 350 

 Planting in grass, 368 

 " Planting in Uganda," by E. Brown 



and H. Hunter, reviewed, 118 

 Plants, improvement of strains, 177 

 Plasmodiophora Brassicae, 193 

 Plasmolysis brought about by water, 



172 



Platanus orientalis, 349 

 Platyceriurn alcicorne, cxxx 



Cordreyi, A.M., cxxx 

 Platyclinis glumacea, Ixxiv 

 Platymiscium, 162 

 Pleione Bulbocodium, 634 



Delavayi, 634 



Forrestii, 634 



grandiflora, 634 



Hookeriana, 634 



humilis, 634 



Lagenaria, 634 



maculata, 634 



pogonioides, 634 



praecoxis, 634 



Reichenbachiana, 634 



Schilleriana, 634 



yunnanensis, 634 

 Plenodomus destruens, 356 

 Plocoglottis porphyrophylla, 167 

 Ploeosporium nymphaearum, cxv 

 Plum aphis, spraying for, 613 



' Bolen,' 344 



buds damaged by insects, 625 

 ermine moth, 301 

 Euclea indeterminata on, 346 

 fire-blight, 320, 321 

 ' French,' 634 

 ' Gephart,' 344 

 ' Hildebrand,' 344 

 ' Holman,' 344 

 ' Imperial Epic are,' 340 

 ' Johnson,' 344 

 ' Llano,' 344 

 ' Middleburgh,' 340 

 Myrobalan blossom rot, 621 

 ' Pearl,' 341 

 ' Ramsey,' 344 

 ' Shropshire,' 634 

 silver leaf, 146 

 ' Stuart,' 344 

 ' Sumlin,' 344 

 ' Tennant,' 341 

 ' Victoria,' 184 

 ' Whittaker,' 344 

 ' Willow,' 344 

 yellow leaf disease, 312 

 Plumbago, 349 



Plums, imported, 149 | 

 Plusia sp., attacking lettuce, cxviii 1 



I Poa annua, 375 

 I .distans, 375 



pratensis, 375 



trivialis, 375 

 I Podocarpus Totara, precocious flower- 

 j ing, 176 



! Poinsettias, a new race, 172 

 Poisonous plants, 172, 341 

 Poisons, antagonism of, 634 



metallic, 173, 315 

 Polemonium carneum, cxxxi 



coeruleum gynandrous, 84 

 Pollen, chemiotaxis, 205, 213 



germination, 139, 205, 213 

 Pollination in orchards, 635, xlv 



of cherry, 312 



of Geranium Robertianum, 151 

 self, 316 



Polyanthus ' Orange King,' A.M., Ixvi 

 Polygonatum officinale, 319 

 Polygonum, 163 



aviculare, 350 

 chinense smut, 213 

 convolvulus, 348 

 Polygonums, 369 

 Polynema sp., 45 

 Polypodium aureum, xxxix 

 Dryopteris, 369 

 Phegopteris, 369 

 X Schneideri, fruiting, xxxix 

 vulgare, 348, 369 



elegantissimum, xxxix 

 Polyporus Berkleyi, 336, 341 

 dryadeus, 336 

 dryophilus, 336 

 frondosus, 336 

 Mylittae, clxxx 

 Pilotae, 336 

 Polystichum, 148 



aculeatum, 369 

 angulare, 369 



divisilobatum plumosum 

 densum superbum, A.M., 

 cxcviii, ccii 

 munitum, 569, cxxxvi 



undulatum, A.M., cxxxvi 

 Pomegranate, 349 



Pomology, a gaide to its literature, 414 

 Poplar, Australian, see Omolanthus 

 populifolius 

 black, 341, 612 

 Canadian as wind-break, 365 

 yellow, see Liriodendron tulipi- 

 fera 



Poppy, 348 



Population, statistics of horticultural, 

 635 



Populus angulata, 341, 636 



deltoides, 341, 633 



missouriensis, 341 

 monilifera, 341 

 occidentalis, 341 

 on sand dunes, 633 



Eugenei, 342 

 X generosa, 636 



Henryana, 342 



lasiocarpa, 217 



Lloydii, 342 



X marilandica, 342 



