Plate 39 



Oedogonium Sawyerii Prescott, x 590 



Oedogonium sexangulare Cleve: 2, x 600; 3, x 300 



Oedogonium gallicum Hirn, x 590 



Oedogonium subsexangulare Tiffany, x 450 



Oedogonium perfectum (Hirn) Tiffany: 6, x 360; 7, x 

 175 



Oedogonium Westii Tiffany, x 325 



Oedogonium rugulosum fa. rotundatum (Hirn) Tif- 

 fany, X 500 



Oedogonium striatum. Tiffany, x 175 



Oedogonium rugulosum fa. rotundatum (Hirn) Tif- 

 fany, X 500 



[738] 



