424 DESCRIPTIONS OF THE PLATES. 



DESCRIPTION OF PLATE XXII. 



Laboulbenia luxurians Peyritsch. 

 Fig. 1. Mature individual. A 12. 



Figs. 2-7. Young individuals, showing successive stages of development. D 2. 

 Fig. 8. Spore. D 10. 



Laboulbenia fumosa Thaxter. 



Figs. 9-17. Successive stages of development from germinating spore. D 2. 

 Fig. 18. Mature individual. A 12. 

 Fig. 19. Antheridium. D 12. 

 Fig. 20. Spore. D 4. 



Laboulbenia confusa Thaxter. 

 Fig. 21. Mature individual. A 12. 



Fig. 22. Young individual with unbroken appendages. A 12. 



Laboulbenia compacta Thaxter. 



Fig. 23. Mature individual. A 12. 

 Fig. 24. Young individual. D 2. 

 Fig. 25. Spore. D 4. 



Laboulbenia Philonthi Thaxter. 

 Mature individual. A 12. 



Young individual, showing divisions of basal cell of inner appendage. A 12. 

 Young individual with peculiarly modified basal cell. D 2. 

 Tip of perithecium with trichogyne. D 4. 

 Spore. D 4. 



Laboulbenia Gyrinidarum Thaxter. 

 Fig. 31. Mature individual. A 12. 



Figs. 32-34. Young individuals, showing cell-structure at base of appendages. One of the 

 characteristic branches is just beginning to develop at the right in Fig. 34. D 2. 

 Fig. 35. Spore. D 4. 

 Fig. 36. Trichogyne. D 2. 

 Fig. 37. Tip of perithecium enlarged. 



Laboulbenia Guerinii Robin. 

 Fig. 38. Mature individual. A 12. 



Fig. 39. 



Laboulbenia Oberthuri Giard. 

 Mature individual. A 4. 



