PLATE 22. 



Ceratostomeae. (Figs, i to 13) 



Fig. 1. Hypsothecasubcorticalis, (0. & B.) natural size oii oak 

 bark. 



" 2. Same enlarged. 



" 3. A perithecium broken open shoving the asci attached to 

 the surface of the inner wall. 



■' 4. An ascus. 



" 5. Two Bporidia. 



" 6. Ceratosphaeria microdoma E. & E. natural size, on bark of 

 elder. 



" 7. Same enlarged. 



" 8. An ascus. 



" 9. A sporidium. 



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



" 11. Portion of same enlarged. 



" 12. An ascus. 



" 13. Two sporidia. 



14. Trematosphaeria pertusa, (Fers) 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. 



