Illustrations 327 



Fig. 13. Hapalosiphon fontinalis (Ag.) Born. (After Lemmermann) 

 Fig. 14, 15. Hapalosiphon laminosus (Kuetz.) Hansh. (After Buscalioni) 



PLATE XV. 



Fig. 1-4. Hapalosiphon ma}or Tilden. (Original) 



Fig. 5. Hapalosiphon intricatus W. and G. S. West. (After W. and G. 



S. West) 

 Fig. 6, 7. Hapalosiphon arboreus W. and G. S. West. (After W. and G. 



S. West) 

 Fig. 8,9. Fischerella ambigua (Naeg.) Gom. (After W. and G. S. West) 

 Fig. 10, II. Fischerella thermalis (Schabe) Gom. (After Lemmermann) 

 Fig. 12. Fischerella thermalis var. mucosa Lemm. (After Lemmermann) 

 Fig. 13. Stigonema hormoides (Kuetz.) Born, and Flah. (After W. and 



G. S. West) 

 Fig. 14. Stigonema aefugineum Tilden. (Original) 

 Fig. 1S-17. Stigonema ocellatum (Dillw.) Thur. (After West) 

 Fig. 18, 19. Stigonema minutum (Ag.) Hass. (After West) 

 Fig. 20. Stigonema turfaceum (Berk.) Cooke. (After Engler and Prantl) 

 Fig. 21. Stigonema informe Kuetz. (After Kuetzing) 

 Fig. 22. Stigonema mamillosum (Lyngb.) Ag. (After Gomont) 



PLATE XVL 



Capsosira brebissonii Kuetz. (After Engler and Prantl) 

 Nostochopsis lobatus Wood. (After Engler and Prantl) 

 Amphithrix janthina (Mont.) Born, and Flah. (After Engler and 



Prantl) 

 Amphithrix violacea (Kuetz.) Born, and Flah. (After Kuetzing) 

 Calothrix Juliana (Menegh.) Born, and Flah. (After Kuetzing) 

 6-8. Calothrix confervicola (Roth) Ag. (After Bornet and Thuret) 

 Calothrix consociata (Kuetz.) Born, and Flah. (After Kuetzing) 

 Calothrix fusco-violacea Crouan. (After Crouan) 

 12. Calothrix scopulorum (Web. and Mohr) Ag. (After Bornet and 

 Thuret) 

 Calothrix contarenii (Zan.) Born, and Flah. (After Kuetzing) 

 Calothrix pulvinata (Mert.) Ag. (After Bornet and Thuret) 

 16. Calothrix parasitica (Chauv.) Thur. (After Bornet and Thuret) 



PLATE XVIL 



Fig. I. Calothrix aeruginea (Kuetz.) Thur. (After Bornet and Thuret) 

 Fig. 2-6. Calothrix Crustacea Thur. (After Bornet and Thuret) 

 Fig. 7. Calothrix scytonemicola Tilden. (Original) 

 Fig. 8, 9. Calothrix stagnalis Gom. (After Lemmermann) 

 Fig. 10, II. Calothrix fusca (Kuetz.) Born, and Flah. (After Teodoresco) 

 Fig. 12. Calothrix sandvicensis (Nordst.) Schmid. (After Schmidle) 

 Fig. 13, 14. Calothrix adscendens (Naeg.) Born, and Flah. (After Teodo- 

 resco) 



PLATE XVIIL 



Fig. 1-5. Calothrix thermalis (Schwabe) Hansg. (Original) 

 Fig. 6, 7. Calothrix calida P. Richter. (After Richter) 

 Fig. 8-10. Calothrix kuntzei P. Richter. (After Richter) 

 Fig. II. Calothrix braunii Born, and Flah. (After Lemmermann) 

 Fig. 12. Calothrix parietina (Naeg.) Thur. (After West) 

 Fig. 13. Calothrix lacucola Wolle. (After Wolle) 

 Fig. 14. Schizosiphon obscurus Dickie. (After Dickie) 

 Fig. 15. Mastigonema paradoxum Kuetz. (After Kuetzing) 

 Fig. 16. Dichothrix orsiniana (Kuetz.) Born, and Flah. (After West) 

 Fig. 17. Dichothrix calcarea Tilden. (Original) 



Fig. 18. Dichothrix baueriana (Grun.) Born, and Flah. (After Lemmer- 

 mann) 



