NOSTOCE/e. 



PL. 91. 





( V 



5 



OSI^ 



v,- 



\\rni ' 



; 





11 



13. \ontochumifugum. Carm. 47. Nostoc commune. Vnuch. 

 8 11. Nostoc sph&ricum. Vouch. 12 J-5. Nostoc wjieKtre. Kutz. 



