PLATE 21 



Melanommeae. 



Fig. 1. Melanomma occidental, Ell. natural size on "sage brush." 

 " 2. Fragment of same enlarged. 

 11 3. Sectional view of a perithecium. 



" 4. An ascus. 



* 



" 5. Two sport dia. 



" 6. Bombardia fasciculata, Fr. natural size on rotten wood. 



" 7. Same enlarged. 



" 8. Section of a perithecium more highly magnified. 



" 9. Three asci. 



" 10. Four sporidia, (A) mature, the others in various stages of 

 development. 



Note. Figures on this plate not drawn to any definite scale. 



