Bui. 1298, U. S. Dept. of Agriculture 
Plate 
Fig. 1. — Mycelium of a wood-destroying fungus on ground wood after six months' storage in a 
mill basement 
Fig. 2. — Mycelium of Trametes pini in southern yellow pine. The small black lines are the 
fungous threads. The heavy lines are the walls of the wood fibers. Note the numerous small 
holes where the threads have perforated the walls of the fibers 
Fig. 3. — Spore print of a mushroom, Lcpiota naucina, obtained by placing the cap, gills down, 
on a piece of black paper. The spores were cast by the billion. (After Atkinson) 
Fig. 4. — Fruit bodies of Polystictus hirsutus on the end of an aspen pulp log. This fungus is 
limited to hardwoods 
Fig. 5. — Fruit bodies of Fomes roseus (the larger) and Polystictus abietinus on the end of spruce 
pulp logs in the pile of three-year wood shown in PI. VI, fig. 3. These two fungi are the most 
prevalent species on conifers 
Fig. 6.— Fruit bodies of Lenzites sepiaria on spruce pulp logs. This fungus is confined almost 
entirely to conifers and develops readily on the drier exposed timbers 
