192 TREE WOUNDS AND DISEASES 



and brittle-wooded tree, and very liable to have 

 heavy limbs broken off during stormy weather. 

 Quite a number of fungi attack diseased elms, 

 but such are noticed under the chapter dealing 

 with that particular pest of our woodlands. 

 As the elm usually breaks into many heavy 

 branches, and the timber is brittle and short- 

 grained, bracing is more necessary in this than 

 any other tree. Owing to exudation, the sur- 

 face of a wound should be painted every third 

 year, else splitting of the wood and rot are 

 apt to take place. The Cornish elm suffers 

 much from root-rot in London. 



Evergreen Oak or Ilex. Though an excellent 

 tree for exposed situations, yet heavy branches 

 are apt to get broken from old specimens in 

 stormy weather. Bracing is therefore recom- 

 mended. Little liable to attacks from insects, 

 though fungi take possession of damaged por- 

 tions of the root and stem. 



Ginkgo^ or Maidenhair Tree. Not liable to 

 damage from either insects or fungus, though 

 in isolated cases the roots have been attacked 

 by the latter, particularly the well-known 

 Fomes annosus. 





