EXPLANATION OF PLATE 1 



Onibrophila rubella Qnel. 

 Fig. 1. Frag-ment of bark bearing the fungus. 

 Fig. 2. A plant and its matrix magnified. 



Fig. 3. A branched filament bearing four clustei"S of spoi'es magnified. 

 Fig. 4. Five spores, X 400. 



Geoglossvim vitelliimin Bres. 

 Fig. 5. Five plants of various forms. 



Fig. 6. Three asci ; two containing spores an(i two united below. 

 Fig. 7. Four spoi-es, X 400. 



Pericoiila albiceps Pk. 



Fig. 8. Piece of a stem bearing the fungus. 



Fig. 9. Two plants magnified. 



Fig. 10. Filaments of the head; two of them bearing spores, X 400. 



Fig. 11. Foui" spores, X 400. 



Helotium frateruuiii Pk 



Fig. 12. A petiole bearing four examples of the fungus. 

 Fig. 13. Two plants magnified. 



Fig. 14. A paraphysis and an ascus containing spores, X 400. 

 Fig. 15. Three spores, X 400. 



Acreinonium flexuosiini Pk. 



Fig. 16. A piece of v/ood bearing the fungus. 



Fig. 17. Branching filaments ; one of them bearing two spores. X 400. 



Fig. 18. Three spores, X 400. 



Morcliella aiigii.sticeps Pk. 



Fig. 19. A plant of medium size. 



Fig. 20. Two undeveloped asci ; one containing crowded nuclei, X 400. 



Fig. 21. An ascus containing spores, X 400. 



II 



