cclxiv PROCEEDINGS OF THE ROYAL HORTICULTURAL SOCIETY 



Peziza on anemone, 15 

 on onion, 827 

 „ postuma, 816 

 „ potato, 816 

 ,, vesiculosa, 393 

 Phlox pests in N, America, 383 

 Phoma destructiva, 819 

 ,, devastatrix, 376 

 Phragmidium subcorticum, 43 

 Phycomyces splendens, 817 

 Phyllosticta althaeicola, 36 

 . ,, altheina, 36 

 ., aquilegicola, 17 

 „ armoraciae, 807 

 „ atrozonata, 10 

 „ bacteriosperma, 20 

 brassica?, 801, 808 

 caprifolii, 371 

 ,, chrysanthemi, 373 

 ,, clematidis, 20 

 ,, Commonsii, 18 

 ,, corrodens, 20 

 ,, cruenta, 393 

 ,, cyclaminis, 380 

 ,, destructiva, 36 



dianthi, 28 

 „ Haldensis, 18 

 „ helleborella, 9 

 „ helleboriana, 10 

 „ helleboricola, 10 

 Liberta?, 22 

 lilii, 386 

 ,, liliicola, 386 

 „ lonicera?, 371 

 ,, moutan, 18 



napi, 802 

 „ nitidula, 371 

 ,, peeonia?, 18 

 ,, pentastemonis, 385 

 „ petunia?, 384 

 „ podophylli, 16 

 ,, primuhtcola, 376 

 ,, tenerrima, 29 



trollii, 13 

 „ tropasoli, 40 

 • „ viola?, 22 

 Vitalba, 20 

 Phytophthora infestans, 815 

 Pinks, disease of, 28, 29, 30 

 Plasmodiophora brassica?, 805 

 Plasmopara cubensis, 823 

 nivea, 823 

 ,, pygmaea, 13 

 Podophyllum peltatum, 16 

 Polyactis cana, 387 

 Poppy rot-mould, 20 

 Potash permanganate, 403 

 Potassium sulphide, 403 

 Potato, American scab, 814 

 „ bacteriosis, 817 

 „ black rot, 817 

 ,, collar ring, 817 

 „ disease, 815 



,, „ mould similar to, 12 

 „ hyacinth bacillus on, 393 

 „ macrosporium, 817 

 ,, peziza, 816 



rhizoctonia, 816 

 „ rot-mould, 815 



Potato scab, 814 



„ sclerote, 816 



„ spindle-mould, 813 

 „ spot-mould, 817 

 „ tumour, 815 

 Powder, David's, 404 



„ fungicides, 404 

 Powdery mildew on honeysuckle, 372 

 Primrose cluster-cups, 377 



„ evening, pest on, 369 



„ pests on, 376 



,, rot-mould, 380 



„ rust, 378 



„ simple brand, 378 



„ smut, 377 



,, white mould, 379 

 Primula elatior, 376, 379 

 integrifolia, 378 

 leaf-spot, 376 

 vera, 376, 379 



„ vulgaris, 376 

 Pseudomonas campestris, 806 

 „ hyacinthi, 392 

 Ptarmica dot, 375 

 Puccinia asgra, 25 



,, alpina, 25 



„ apii, 811 



„ arenaria, 33 



„ asparagi, 828 

 Berkeleyi, 382 



,, centaurea, 374 



,, delphinii, 13 



„ dianthi, 32 



„ fastidiosa, 33 



„ Fergusonii, 25 



„ fusca, 15 



„ gentiana?, 381 

 gladioli, 399 



,, granulans, 40 



„ hastata, 25 



„ helianthi not in this country, 373 

 „ hieracii, 374, 375 

 „ on hollyhock not in this 

 country, 373 

 iridis, 397 

 „ Kalchbrenneriana, 390 



liliacearum, 386, 390 

 „ malvacearum, 36 

 „ menthas, 819 



mixta, 826 

 „ porri, 825 

 „ primulas, 378 

 „ Schroeteri, 396 

 „ silenes, 33 

 „ soldanellas, 381 

 ,, trollii, 13 

 ,, truncata, 397 



tulipa?, 389 

 ,, vine®, 382 

 ,, violas, 24 

 Pulsatilla smut, 11, 14 

 Purple leaf-spot on Chrysanthemum, 373 



,, ,, ,, columbine, 17 



Pythium De Baryanum, 804 

 „ intermedium, 401 



Ragwort pests, 375 

 Ramularia agrestis, 26 



