INDEX. 



269 



Odontoglossum, 173 



citrosmum, 172 



{Edomyces leproides, 92, 245 

 CEnothera, pest on, 49 

 Oidium abortifaciens, 235 



Balsamii, 84, 150, 243 

 Berberidis, 186-7 

 bullatum, 122 

 Chrysanthemi, 50 

 Cydoniae, 124 

 erumpens, 60 

 erysiplioides, 100 

 ,, Euonymi-japonicae, 190 

 farinosum, 110, 111 

 ,, leucoconium, 45 

 mespilinum, 124 

 monilioides, 237 

 pactolinum, 167 

 Tuckeri, 45, 84, 156, 157 

 Oleander leaf-spots not in Britain, 178 

 Olive pests of slight consequence in this 



country, 164 

 Olpidium Brassicae, 82 

 Oncidium anthracnose, 174 

 Onion, bacterial rot, 106 

 ,, mildew, 104 

 mucor, 106 

 rot-mould, 105 

 rust, 104 

 scab, 104 

 sclerote, 106 

 smut, 106 

 spindle-mould, 104 

 Oospora Cookei, 176 

 inaequalis, 176 

 Scabies, 92 

 Opium poppy, 22 

 Orange anthracnose, 163 



blotch, 164 

 foot-rot, 163 

 leaf-spot, 163 

 ,, mould in Italy, 163 

 scab, 163 

 sooty blotch, 162 

 Australian, 162 

 Italian, 162 

 ,, Sicilian, 162 

 mould, 162 

 Orchard Agarics, 142 



trees, pests of, 109 

 Orchid anthracnose, American, 173 

 Bidgood's, 173 



,, Malagasy, 174 



Mexican, 174 



black mould, 172 

 disease, 170 

 Hemileia, 174 

 ,, leaf-spot, 171 

 rust, 171 



Ornithogalutn black mould, 67 

 brand, 67 



smut, 66 



umbellatum, 67 



Osier rust, 221 

 Ovularia Berberidis, 186 

 circumscissa, 131 

 Clematidis, 20, 21 

 elliptica, 64 

 exigua, 248 



Ovularia interstitialis, 56 

 ,, necans, 124 

 primulana, 56 

 Syringae, 191 



Paeony brown mould, 19 

 drooping disease, 19 

 leaf-spot, 18 

 rust, 18 

 Palm leaf-spot, 176 

 Palm-leaf black mould, 175 



pustule, 175 

 Pansy diseases, 23 

 Paraffin, 254 

 Parsley leaf-spot, 89 

 Parsnip rot-mould, 90 < 



spot-mould, 90 

 Partridge wood, 210 

 Passalora bacilligera, 216 

 Passion-flower black mould, 168 

 Passiflora quadrangularis, 168 

 Pavia, leaf -spot on, 204 

 Pea anthracnose, 87 

 mildew, 88, 249, 255 

 pod spot, 87 

 rust, 88, 249 

 Peach anthracnose, 132 

 curl, 133 

 freckle, 134 

 leaf-blister, 133 



frosty mildew, 134 

 rot, 132 

 rust, 132 

 scab, 134 



shot-hole fungus, 131 

 spot-mould, 134 

 yellows, 134 

 Pear, brown rot, 135 



cluster-cups on, 196 

 leaf-blight, 122 



American, 123 

 blister, 122 

 cluster-cups, 120 



not in Scotland, 122 

 spots, 123 

 mould, 123 

 scab, 123 



sulphury wood-rot, 208 

 tree canker, 119 

 twig pustule, 119 

 Pelargonium anthracnose, 40 

 leaf-spot, 40, 41 

 rust, 41 



stem-rot, 40 



Pellicularia Koleroga, 167 

 Penicillium digitatum, 162 

 Pentstemon leaf-spot, 62 

 Peridermium columnare, 224 

 elatinum, 224 



Pini, 224 



Periwinkle leaf-spot in Europe, 59 

 rot-mould in Europe, 59 



rust, 59 



Permanganate of potash, 254 

 Peronospora arborescens, 22 

 ,, Candida, 57 

 crispula, 22 



Dianthi, 36 



