EXPLANA TION OF PL A TE 1. 



ASCOMYCES EXTENSUS Peck. 



Fig. 1. A leaf partly Killed and discolored by the fungus. 

 Fig. 2. An ascus containing spores x 400. 

 Fig. 3. Four spores x 400. 



Agaricus (Nolanea) Babingtonii Blox. 

 Fig. 4. . One young plant and two mature plants, the two at the left having the 



pileus moist and striatulate. 

 Fig. 5. Vertical section of a pileus and the upper part of its stem. 

 Fig. 6. Transverse section of the stem. 

 Fig. 7, Three spores x 400. 



Pestalozzia consocia Peck. 

 Fig. 8. Part of a leaf with a discolored spot dotted by the fungus. 

 Fig. 9. Four spores, the one at the left immature x 400. 



Pestalozzia campsospekma Peck. 

 Fig. 10. A leaf bearing the fungus. 

 Fig. 11. Four spores x 400. 



Sph^rella lycopodii P^c^-. 

 Fig. 12. Two spikes of the host plant bearing the fungus. 

 Fig. 13. A slightly magnified scale dotted by the fungus. 

 Fig. 14. An ascus containing spores x 400. 

 Fig. 15. Four spores x 400. 



GoDRONiA CASSANDRJi; Peek. 

 Fig. 16. Part of a branch bearing the fungus. 

 Fig. 17. A receptacle magnified. 

 Fig. 18. Vertical section of the same. 



Fig. 19. A paraphysis and two asci containing spores x 400. 

 Fig. 20. Three spores s 400. 



Clavari.\. circinans Peck. 

 Fig. 21. Two plants. 

 Fig. 22. Five spores x 400. 



