PLATE 18. 



Sordarieae. 



Fig. 1. Podospora lutea, E. & E. natural size on decaying bark. 



" 2. The same somewhat magnified. 



" 3. Sectional view of a perithecium highly magnified. 



■' 4. An ascus. 



5. Four sporidia, A, B, C and D, in different stages of devel- 

 opment, C and D mature. 



" 6. Sporormia minima, Awd. somewhat magnified, on goat's 

 dung. 



7. A perithocium highly magnified and broken open, showing 

 the nsci within. 



" 8. A cluster of ai^ci, middle one mature. 



9. Two sporidia. 



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



