EXP LA NA TION OF PL A TE 2 . 



DiAPORTHE MARGINALIS Peck. 



Fig. 1. Part of a branch beariog the fungus. 



Fig. 2. A pustule magnified. 



Fig. 3. Vertical section of a magnified pustule, showing three perithecia. 



Fig. 4. Two asci containing spores x 400. 



Fig. 5. Four spores x 400. 



DiAPORTHE Neilli^ Pecl: 

 Fig. 6. Part of a branch bearing the fungus. 



Fig. 7. A perithecium magnified, its rostrum piercing the epidermis. * 

 Fig. 8. Two asci containing spores x 400. 

 Fig. 9. Four spores x 400. 



Leptosph^-eria Kalmi^ Peck. 

 Fig. 10. Part of a branch bearing the fungus. 

 Fig. 11. a piece of the bark with two perithecia magnified. 

 Fig. 12. A perithecium more highlj' magnified. 

 Fig. 13. a paraphysis and an ascus containing spores x 400. 

 Fig. 14, Four spores x 400. 



L-3ESTADIA MscvIjI Peek. 

 Fig. 15. Part of a petiole bearing the fungus. 

 Fig. 16. A perithecium magnified. 

 Fig. 17. Two asci containing spores x 400. 

 Fig. 18. Four spores x 400. 



MoNiLiA Peckiana S. <& V. 

 Fig. 19. a leaf partly discolored and its petiole frosted by the fungus. 

 Fig. 20. Two chains of spores x 400. 

 Fig. 21. A single spore x 400. 



M. Peckiana var. angustior S. 

 Fig. 22. Part of a raceme with four of its young fruits frosted by the fungus. 

 Fig. 23. Two chains of spores x 400. 

 Fig. 24. Two spores x 400, 



