DESCRIPTIONS OF THE PLATES. 



415 



DESCRIPTION OF PLATE XIII. 



Laboulbenia vulgaris Peyritsch. 



Figs. 1, 2. Two mature individuals. A 12. 

 Fig. 3. Spore. D 4. 



Laboulbenia pedicillata Thaxter. 



Fig. 4. Mature individual, short form. A 12. 



Fig. 5. Young individual of short form. A 12. 



Fig. 6. Spore. D 4. 



Fig. 7. Mature individual, elongate form. A 12. 



Fig. 8. Young individual of elongate form. A 12. 



Laboulbenia subterranea Thaxter. 



Figs. 9, 10. Two mature individuals. A 12. 

 Fig. 11. Spore. D 4. 



Laboulbenia truncata Thaxter. 



Fig. 12. Mature individual, the tip of the appendage broken. A 12. 



Fig. 13. Young individual, showing character of inner and outer appendage. A 12. 



Fig. 14. Spore. D 4. 



Laboulbenia perpendicularis Thaxter. 



Fig. 15. Mature individual, the tip of the outer appendage broken. A 12. 



Fig. 16. Inner appendage with single antheridium at left. D 12. 



Fig. 17. Young individual with unbroken appendages. A 12. 



Fig. 18. Spore. 



Laboulbenia JVebiice Peyritsch. 



Fig. 19. Mature individual. A 12. 



Fig. 20. Young individual with three antheridia on inner appendage. A 12. 



Fig. 21. Inner appendage with a single antheridium at the left. A 12. 



Laboulbenia Casnonioz Thaxter. 



Fig. 22. Mature individual. A 12. 

 Fig. 23. Spore. D 4. 



Laboulbenia paupercula Thaxter. 



Figs. 24, 25. Two individuals in which the inner appendage occupies opposite positions in either 

 case. A 12. 



Fig. 26. Branch of inner appendage with two antheridia. D 12. 

 Fig. 27. Spore. D 4. 



Laboulbenia cornuta Thaxter. 



Fig. 28. Mature individual, the appendages broken. A 12. 

 Fig. 29. Young individual. A 12. 



Fig. 30. Tip of perithecium, showing appendage formed by the outgrowth of one of the lip- 

 cells. A 12. 



