cclxxx PROCEEDINGS OF THE ROYAL HORTICULTURAL SOCIETY. 



Phyllosticta vitis, 314 

 Plasmodiophora californica, 322 



i vitis, 321 

 Plasmopara viticola, 320 

 Plctospora kentia?, 337 

 Plownghtia morbosa, 23 

 Plum, American black knot, 23 



„ black mould, 17 



„ gummosis, 17 



„ leaf-blotch, 18 



„ „ shot-hole fungus, 22 



,, pockets, 18 



„ powdery mildew, 16 



„ tree mildew, 19 



„ „ pustule, 4 



„ ,, rust, 17 

 Podosphaera tridactyla, 19 

 Polypore, currant, 37 

 „ gooseberry, 37 

 „ tinder, 34 

 Polystigma rubra, 18 

 Polystigmina, 19 



Powdery mildew on plum and sloe, 16 

 Protomyces concomitans, 331 

 Puccinia pruni, 17, 24 

 Pustule on fruit-trees, 4, 10 



Quince anthracnose, 16 

 „ blight, 14 

 „ leaf-spot, 16 

 „ white mould, 16 



Ramularia Tulasnei, 41 

 Raspberry, agaric on, 39 

 „ anthracnose, 38 

 brand, 39 



cane blight in U.S.A., 38 

 „ „ spot, 38 



Red currant bleached spot, 35 



„ spot on grapes, 315 

 Rhizomorphs, 33 

 Rhododendron blotch, 326 

 Roestelia cancellata, 12 

 Root fungi, 32 

 Rosellinia necatrix, 322 

 Riisslera hypogaea, 322 

 Rot, bitter, 8, 9 



,, brown, 6 



„ coffee-leaf, 328 



„ currant, 35 



„ fig, 29 



„ grape, 315 



„ black, 319 



,, „ white, 315 



,, peach, 23 



,, raspberry, 38 



„ tree, 33 



„ walnut, 27 

 Rust, gooseberry, 35 



„ peach, 24 



„ plum-tree, 17 



„ raspberry, 39 



Saccardo's leaf-spot, 314 

 Saccharomyces glutinis, 331 

 hnicidium viticola, 314 



I Savin as host-plant to Roestelia, 13 

 Scab, apple, 6 

 „ Camellia, 326 

 „ lemon, 324 

 ,, orange, 324 

 „ peach, 25 

 „ pear, 14 

 Sclerotinia Fuckeliana, 319 

 Screw-pine black anthracnose, 335 

 „ mould, 336 

 „ nectria on, 336 

 Septoria ampelina, 314 

 „ avellanas, 31 

 azaleae, 329 

 Badhami, 313 

 fragariae, 40 

 „ hoyae, 327 

 ,, mespili, 16 

 ,, nigerrima, 14 



pallens, 22 

 „ pyricola, 1 



Ralfsii, 6 

 „ ribis, 34 

 | „ transversalis, 330 

 ,, vinea?, 314 

 „ viticola, 314 

 Shot-hole fungus not in Britain, 23 

 Silkworm disease, supposed cause of, 30 

 Silver-leaf, 26 

 Sloe leaf-blotch, 18 



„ powdery mildew, 16 

 Smilax blotch, 326 

 Sorokin's vine spot, 314 

 South African apple-tree white mould, 2 

 Sphaceloma, ampelinum, 314 

 Sphasrella fragariae, 41 



Gibelliana, 324 

 Sphffiria malorum, 9 

 Sphaeropsis malorum, 10 

 Sphaerotheca castagnei, 42 

 ,, humuli, 42 



„ mali, 3, 4 

 „ mors-uvae, 37 

 Spilocaea pomi, 9 

 Spiranthes, 332 

 Spot, black, 25 

 „ bleached, 35 



„ leaf, 1, 2, 14, 16, 20, 30, 31, 34, 35, 

 39, 313, 314, 324, 327, 329, 330, 

 332 



„ mould, 25, 31, 41, 316 

 „ raspberry cane, 38 

 „ red, 315 

 Squirt Berry, 316 

 Stagonospora kentiae, 337 

 Stephanotis leaf -spot, 329 

 Stereum purpureum, 26 

 Strawberry anthracnose, 40 

 leaf-blight, 41 

 ii » spot, 40 



„ little, 39 

 ,, mildew, 42 



rot, 40 

 ,, spot mould, 41 

 Sulphate of copper, 320, 327 

 Sulphate of potassium, 9 

 Sulphide „ „ 37, 41, 43 

 Sulphur, powdered, 16, 37, 318, 319 

 Sycamore canker, 11 



