LABOULBENIALES 



387 



Fig. 261. — Tettigomyces africanus. 1. Mature individual. 2. Young antheridium 

 showing relation of adnate trichogyne to antheridial cells and carpogenic cell. 3. Older 

 antheridium; the adnate trichogyne with two free branchlets seen sidewise, and showing 

 necks and discharging spermatia. 4, 5. Tettigomyces intermedins, showing the antheridia 

 disorganized. 6. Tettigomyces gracilis. 7. Tettigomyces chaetophilus, showing free tricho- 

 gyne. 8. Tettigomyces Gryllotalpae . 9. Tettigomyces vulgaris, showing the tip of anther- 

 dial appendage beginning to disorganize and free spermatia. 10. Distal portion of young 

 ndividual showing terminal spine. Adnate trichogyne, x; ascogonium, y; young anther- 

 idium not fully mature, paired daughter cells below indicating intercalary division. 11. 

 Small individual; antheridial appendage partly disorganized. 12. Large individual with 

 antheridial appendage completely disorganized. {After Thaxter, 1926.) 



