Plate 111 



Fig. 1. Phor7nidium ambiguiim Gomont, x 750 



Fig. 2. Phormidium favosum ( Bory ) Gomont, x 485 (redrawn 



from Fremy ) 



Fig. 3. Phormidium inundatum Kuetzing, x 750 



Figs. 4, 5. Phormidium mucicola Naumann & Huber-Pestalozzi: 

 4, X 3200; 5, X 750 



Fig. 6. Phormidium Retzii ( C. A. Ag. ) Gomont, x 380 



Fig. 7. Phormidium tenue ( Menegh. ) Gomont, x 1125 



Fig. 8, Lyngbya aestuarii ( Mert. ) Liebmann, x 1050 



Fig. 9. Lyngbya Birgei G. M. Smith, x 750 



Figs. 10, 11. Lyngbya aerugineo-caerulea (Kuetz.) Gomont: 10, x 

 900; 11, X 450 



[882] 



