. 



.. 



PLATE 33. 



Valseae. 



Fig. 1. Valsa floriformis, E. & E. somewhat enlarged, on bark. 



2. Horizontal section through a stroma. 



3. Vertical section, much enlarged, showing the perithecia 



lying around the labyrinthiform, central sperniogonial 

 cavities. 



4. An ascus. 



5. Two sporidia. 



6. Two sperniogonial spores. 



7. Calosphaeria niicrosperma, E. & E. somewhat enlarged, on 



bark of Cctrpinus. 



8. A cluster of perithecia somewhat enlarged and exposed by 



the removal of the bark. 



9. Three clusters of asci arising from interwoven, branching 



filaments in the bottom of the perithecia and accom- 

 panied by very long stout paraphyses. 



" 10. Four spoi'idia. 



11. Entypa echinata, E, & E. somewhat enlarged, on Fraxi- 



nus. 



12. An ascus. 



13. Three sporidia. 



14. Diaporthe tuberculosa, Ell., an ascus. 



15. A sporidium. 



Diaporthe densissima, Ell., two sporidia. 









