Plate 76 



Figs. 1, 2. Spirogyra rhizobrcichialis Jao: 1, x 187; 2, x 375 



Figs. 3, 4. Spirogyra scrohiculata (Stock.) Czurda: 3, x 440- 4 x 

 220 



Figs. 5-7. Spirogyra stictica ( Engl. Bot. ) Wille, x 175 



Figs. 8-10. Spirogyra Weberi Kuetzing, x 240 



Figs. 11, 12. Spirogyra varians ( Hass. ) Kuetzing, x 350 



[812] 



