Cclviii PROCEEDINGS OF THE ROYAL HORTICULTURAL SOCIETY. 



Pulvernaria floccifera, 514 



greeni, 514 



maskelli, 514 



newmani, 514 



nuitsiae, 514 



paradelpha, 514 



salicorniae, 514 



tecta, 514 



theae, 514 



Thorn psoni, 514 

 Pumpkin attacked by melon fly, 380 

 Pycnostachys Dawei, lxi 

 Pyracantha crenulata, A.M., lit, liv 

 Pyrethrum cinerariaefolium, cultiva- 

 tion, 528 



Pyrethrums tried at Wisley, 191 5, 

 265, cxxiv 



Pyrola rotundifolia, 23 

 uniflora, 23 



Pyrus Aria, 14 



communis, 160 

 floribunda purpurea, cc 

 japonica Wilsonii, A.M., cxxxii 

 Malus Sargentii, A.M., cxvii, 

 cxix 



Niedzwetzkyana, cc 

 occidentalis, 24 

 sitchensis, 24 

 sinensis, 160 

 Sorbus, 13 



maliformis, 14 

 pyriformis, 14 

 sp. hosts for fruit pests, 39 

 yunnanensis, 529 

 Pythium de Baryanum, 533 

 on tobacco, 168 



Quercus agrifolia, 27 

 alba, 159, 164 

 bi color, 164 

 californica, 164 

 chrysolepis, 27 

 densiflora, 26 

 digitata, 164 

 Emoryi, 164 

 Gambelii, 164 

 Garryana, 26 

 Ilex, 20 

 imbricaria, 164 

 lobata, 27, 164 

 Michauxii, 164 

 nigra, 164 



obtusata, 4, 8, 19, 20 

 pedunculata, 4, xliii 



var. scolopendrifolia, 

 xxxviii 

 Phellos, 164 

 rubra, 164 

 velutina, 164 

 Wislizeni, 26 

 Quince, 39 



' Vranja,' A.M., ccvi 



Radish, longevity of seed, 165 

 Ramondia pyrenaica, 420 

 Ranunculus Lyallii, cxxvii 

 Raspberry crown gall, 161 



moth, 31, 32 



pests, 31 



Raspberry saw-fly, 34 

 weevil, 31, 163 

 Rawson, H. E., on changes of colour 

 and structure of flowers by removing 

 sunlight at selected hours, 42 

 Red bud, see Cercis canadensis 

 gum, 154 

 spider, 511 

 Rendle, A. B., see Fawcett, W. 

 Report of Council, 191 4, hi 

 Retinispora Sanderi, 419 

 Rhamnus californica, 22 

 Purshiana, 22 

 sp. in Yunnan, 205 

 Rheum Alexandrae, 206 

 Rhinaria perdix, 533 

 Rhizoctonia on tobacco, 168 



Solani, 162, 383, 526, 527 

 sp., 533 

 Rhizopus nigricans, 533 

 Rhododendron adenogynum, 208 

 adenopodum, 163 

 albiflorum, 24 

 argyrophyllum, 163 

 aureum, 204 

 auriculatum, 163 

 Balfourianum, 204 

 Beesianum, 204 

 brachyanthum, 204 

 bullatum, 197, 202, 204 

 cal-ifornicum, 23 

 calophytum, 163 

 catawbiense, 23 

 campylogynum, 202, 204 

 cephalanthum, 208 

 ciliicalyx, 200, 202, 204 

 concinnum, 529 

 crassum, 163, 202, 204 

 cuneatum, 208 

 cyanocarpum, 204 

 dauricum rust, 532 

 Davidii, 163 

 Davidsonianum, 529 

 decorum, 204 

 Delavayi, 204 

 dichroanthum, 204 

 discolor, 163 

 effect of lime on, 529 

 eximium, lxii 

 Faberi, 163 

 fastigiatum, 163, 204 

 ferrugineum rust, 532 

 noccigerum, 204 

 foliage attacked by fungi, cx 

 formosum, 201 

 Fortunei, 201 

 haematodes, 204 

 Hanceanum, 163 

 hirsutum rust, 532 

 indicum var. balsaminaeflorum, 

 418 



intricatum, 204, 208, 417 

 irroratum, 204 



lacteum var. macrophyllum, 202 

 lignosum, 208 

 longesquamatum, 163 

 longistylum, 163 

 lutescens, 163 

 microphyton, 204 



