EXPLANATION OF PLATE 4 



Eamulaeia graminicola Peck. 



Fig. 1. Upper part of a grass leaf marked with three fungous spota. 

 Fig. 2. A cluster of four hyphae, two of them bearing spores, x 400. 

 Fig. 3. Five spores x 400. 



Eamulaeia destruens Peck. 



Fig. 4. A leaflet with the upper half blackened by the fungus and showing 



two fungous spots. 

 Fig. 5. Tufts of hyphsB, two filaments bearing spores, x 400. 

 Fig. 6. Six spores x 400. 



Cercosporella Veratri Peck. 



Fig. 7. Upper part of a leaf with two fungous spots. 

 Fig. 8. Three spores x 400. 



Aspergillus aviarius Peck. 



Fig. 9. Piece of membrane bearing a patch of the fungus. 



Fig. 10. A spore-bearing vesicle and its filament, the former partly 



denuded of its chains of spores, x 400. 

 Fig. 11. A single chain of spores x 400. 

 Fig. 12. A group of free spores x 400. 



Septomyxa Carpini Peck. 



Fig. 13. A piece of bark bearing six heaps of spores. 

 Fig. 14. Five spores x 400. 



BiSPORA EFFUSA PCCk. 



Fig. 15. Piece of wood bearing a patch of the fungus. 

 Fig. 16. Three chains of spores and a sterile hypha x 400. 

 Fig. 17. Four free spores x 400. 



Oartospora minor Peck. 



Fig. 18. A hickory nut bearing a group of the perithecia. 



Fig. 19. A perithecium enlarged. 



Fig. 20. An ascus containing spores x 400. 



Fig. 21. Three spores x 400. 



Phyllosticta LuDwiGiiE Peck. 



Fig. 22. >A leaf showing three fungous spots. 

 Fig. 23. Four spores x^400. 



