Plate 34 



Figs. 1-3. Oedogonium Reinschii Roy, x 700 



Fig. 4. Oedogonium psaegmatosporum Nordstedt, x 590 



Figs. 5, 6. Oedogonium pyriforme Wittrock, x 675 



Figs. 7-9. Oedogonium minus (Wittr. ) Wittrock: 8, oogonium 

 with extrusions of mucilage through the punctae of 

 the wall; all x 600 



Fig. 10. Oedogonium Kurzii Zeller, x 300 



Figs. 11, 12. Oedogonium autumnale Wittrock: 11, x 675; 12, x 375 



Figs. 13, 14. Oedogonium gracilimum Wittrock & Lundell, on fila- 

 ment of Microspora, x 750 



Figs. 15, 16. Oedogonium Gunnii Wittrock, x 590 



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