Plate 22 



Figs. 1-4, Cladophora profunda var. Nordstedtiana Brand, x 100 



Figs. 5, 6. Pithophora Mooreana Collins, x 60 



Figs. 7-10. Pithophora oedogonia (Mont.) Wittrock: 7, x 25; 8, x 

 100; 9, X 30; 10, portion of cell showing chloroplasts, 



xl25 



[704] 



