PLATE 22. 



Ceratostomeae. (Figs. i to 13) 



Fig. 1. Hypsothecasubcorticalis, (C. <fe E.) natural size on oak 

 bark. 



2. Same enlarged. 



3. A perithecium broken open showing the asci attached to 



the surface of the inner wall. 



4. An ascus. 



5. Two sporidia. 



6. Ceratosphaeria microdoma E. & E. natural size, on hark of 



elder. 



7. Same enlarged. 



8. An ascus. 



9. A sporidium. 



10. Ceratostoma subriifum, E. &. E on wood of dead oak limb. 



11. Portion of same enlarged. 

 " 12. An ascus. 



13. Two sporidia. 



14. Trematosphaeria pertnsa, (Pers) natural size, on dead 



wood. 



15. Portion of the same enlarged. 



16. An ascus. 



17. A sporidium 1-septate. 



2-soptate. 

 3-septate. 



" " 



