Some conks that are 

 reliable indicators of 

 cull on Sitka spruce 



Fig. 6. — Fomes pinicola on upper bole. Fig. 7* — Fomes pini on lower bole. 



Fig. 8. — Polyporus sulphureus on 

 lower bole. 



Fig. 9« — Typ^^al Polyporus 



schweinitzii conk growing out of 

 stump. On standing trees these 

 conks usually occur on or near 

 the ground at the tree base. 



-15- 



