Bui. 25, Div. Veg. Phys. & Path., U. S. Dept. of Agriculture. 



PLATE VI. 



k'^^^itjiim 



Fig. 1. Red Spruce: Early stage of the decay caused by Trametes pini forma abietis 





Fig 2. Red Spruce: Advanced stage of the decay caused by 

 Trametes pini forma abietis. 



