Injuries on trees that are reliable indicators of cull 



m^!'^''' 



Fig. 10. — Old scar a:.>^ Joiik of Fomes 

 pinicola on lower bole of Sitka 

 spruce, either of which is a 

 reliable indicator. 



Fig. 11. — Frost crack in lower 

 bole of Sitka spruce showing 

 decay from Fomes pinicola which 

 entered through the frost crack. 



Fig. 13. — Rotten canker caused by 

 dwarfmistletoe infection in the 

 upper bole of a western hemlock tree. 



Fig. 12. — Scar from deep wound in lower bole 

 of western hemlock tree and cross section 

 of bole from kO feet above the ground, 

 showing rot caused by Fomes pinicola which 

 entered through the old scar at the base. 



-16- 



