CARTER: ILLINOIS TREES: THEIR DISEASES 



77 



Fig. 73. — Fruiting bodies of the needle blight fungus push out through 

 fissures in diseased needles of Austrian pine. They appear as dark brown 

 to black pustules or bumps. 



« 4te -M»- 



t ^ •»■ - -« 



Fig. 74. — Fruiting bodies of the needle cast tungus' 

 black, oval spots on diseased portions of pine needles. 



appear as s 



mall. 



Fig. 7.5. — Conspicuous cream- to orange-colored, baglike fruiting bodies 

 attached to pine needles affected with rust contain numerous, orange, pow- 

 der-like spores of the fungus. 



