PLATE 15. 



Hypocreaceae. 



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



2. An ascus. 



3. A sporidiuin. 



4. Cordyceps Sphinguiii, (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 clavnlata, (Schw.) on dead scale insects on a 

 living twig offraxinus, somewhat enlarged. 



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

 thecia. 



" 13. A sporidiuin. 



" 14. Claviceps inicrocephala, Tul. somewhat enlarged. 

 " 15. An ascus. 

 " 16. A sporidiuin. 

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



