IXDEX. 79 



i-age 



Elm, mildew injury 18 



mistletoe injury 15 



slime-flux injury 24 



white-rot, susceptibility 48 



Environment, influence on prevalence of white heart-rot 31-33 



Europe, investigations of effects of sulphur fumes on vegetation 10, 11, 12 



Fagus spp. See Beech. 



False-tinder fungus. See Fomes igniarius. 



Fence posts, decay caused by Polystictus versicolor 53-56 



Flux, slime, diseases, description 24-25 



Fomes applanatus, cause of sap-rot of cottonwood 58-60 



habits 52 



everhartii, cause of heart-rot of oak, description and sporophores 48, 74 



fomentarius, description and injury to trees 50-51, 74 



fraxinophilus, cause of white heart-rot of ash, description, etc 46-47 



sporophores, description 46 



fulvus, cause of red heart-rot of birch, description 47 



destruction of olive trees in Italy 47 



igniarius^ distribution, description, growth, and prevention 27-37, 74 



effect on wood structure 34-35 



fungus causing white heart -rot 25-37 



sporophores, formation 30 



synonymy 29 



nigricans, description, growth habits, and injuries to trees 42-44 



sporophores, description and growth 43 



rimosus, cause of black locust disease, description and growth 45^16 



sporophores, growth and appearance 45-46 



Forest trees. See Trees, forest. 

 Fraxinus spp. See Ash. 



Freeman, E. M., reference to work 49 



Fruit trees. See Trees, fruit. 



Fungi, beneficial, development, effect of soil conditions 13 



causing leaf diseases 18-21 



sap-rot through tree wounds, description 49-52 



disease-bearing, classification 9,18 



growing on dead wood 31, 38, 42, 49, 52-61 



leaf-blister, injuries to trees 21 



miscellaneous, causing diseases of trees 18-25 



root-rotting, description and effects 23-24 



sap-rotting, resembling Polystictus versicolor and P. pergamenus 61 



eaprophytic 52-61 



cause of decay in structural timber 62 



soil, development, effect of soil conditions 13 



wound, causing diseases of forest trees 25-52 



Fungus, coral, causing white-rot, description, growth, etc 44-45 



false-tinder. See Fomes igniarius. 



micorrhizal, development, effect of soil conditions 13 



tinder, description and injury to trees 50-51 



transmission from oaks to fruit trees 24 



Gas condensation a preventive of injury to vegetation 11, 12 



injury, preventive methods 12 



Gases, sulphur, injuries to trees 10-12 



Gloeosporium nervisequum, cause of sycamore leaf-blight 20 



79152 Bui. 14909 6 



