PLATE 15. 



Hypocreaceae. 



Fig. 1. Ophionectria Everhartii, E. & G., enlarged perithecium. 



" 2. An ascus. 



'' 3. A sporidium. 



" 4. Cordyceps Sphingum, (Tul.) natural size growing from a 

 dead larva in a cocoon. 



" 5. An enlarged piece of a stroma bearing perithecia. 



" 6, A perithecium highly magnified. 



" 7. An ascus. 



" 8. Epichloe typhina, (Pers.), natural size, on culm of grass. 



" 9. Enlarged section through the stroma and perithecia. 



" 10. An ascus with the lower part broken away showing the 

 protruding sporidia. 



" 11. Cordyceps clavulata, (Schw.) on dead scale insects on a 

 living twig of Fraxinus, somewhat enlarged. 



" 12. An enlarged head of one of the stromata showing the peri- 

 thecia. 



" 13. A sporidium. 



" 14. Claviceps microcephala, Tul. somewhat enlarged. 



" 15. An ascus. 



" 16. A sporidium. 



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



