DESCRIPTIONS OF THE PLATES. 



421 



DESCRIPTION OF PLATE XIX. 



Laboulbenia mexicana Thaxter. 



Fig. 1. Mature individual. A 12. 

 Fig. 2. Branch with antheridia. D 12. 

 Fig. 3. Spore. D 4. 



Laboulbenia melanotheca Thaxter. 

 Fig. 4. Mature individual. A 12. 



Laboulbenia longicollis Thaxter. 

 Fig. 5. Mature individual. A 12. 



Fig. 6. Mature individual : terminal portion, the branches all broken from the basal cells of the 

 appendages. A 12. 



Fig. 7. Branches of inner appendage with groups of antheridia. D 12. 

 Fig. 8. Spore. 



Laboulbenia Galeritai Thaxter. 

 Fig. 9. Mature individual. A 12. 



Fig. 10. Lateral view of base of appendages, showing insertion of branches. 

 Fig. 11. Fertile branch of inner appendage with three antheridia D 12. 

 Fig. 12. Spore. D 4. 



Laboulbenia australiensis Thaxter. 

 Mature individual. A 12. 



Younger individual, showing thick perithecial wall. A 12. 

 Antheridium. D 12. 

 Spore. D 4. 



Laboulbenia Panagazi Thaxter. 



Figs. 17, 18. Two mature individuals. A 12. 

 Fig. 19. Two antheridia. D 12. 

 Fig. 20. Spore. D 4. 



