Plate 69 



Figs. 1-3. PhyUosiphon Arisari Kiihn: 1, x 300; 2, x 100; 3, x 60 

 ( redrawn from Just ) 



Figs. 4-6. Mougeotiopsis calospora Palla: 4, x 590 (after Skuja); 

 5, x 625; 6, X 590 



Fig. 7. Zygnemopsis spiralis (Fritsch) Transeau, x 590 



Fig. 8. Zygnemopsis desmidioides (West & West) Transeau, 



x590 



Figs. 9, 10. Zygnema pectinatiim (Vauch.) C. A. Agardh: 9, x 375; 

 10 (after Smith), X 400 



[798] 



