PLATE 22. 

 Ceratostomeae. (Figs, l to 13) 



Fig. 1. Hypsothecasubcorticalis, (C. & 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 bark of 

 elder. 



" 7. Same enlarged. 



M 8. An ascus. 



" 9. A sporidium. 



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



" 11. Portion of same enlarged. 



" 12. An ascus. 



" 13. Two sporidia. 



" 14. Trematosphaeria pertusa, (Pers) natural size, on dead 

 wood. 



" 15. Portion of the same enlarged, 



" 16. An ascus. 



" 17. A sporidium 1-septate. 



" 18. " " 2-septate. 



" 19. " " 3-septate. 



