18 



OSCILLARIACE AE . 



OSCILLARIA Kiit/. 

 O. Froelichii Kiitz. 



Frequent. 

 O. aeruginea-caerulea Kiitz. 



Frequent. 

 O. limosa Kutz. 



Queens : Jamaica Bay, Whitestone, Pike. 



MICROCOLEUS Desmaz. 



M. chthonoplastes (Fl. Dan.) Thuret. 



Kings: Fort Hamilton, Pike. Suffolk : Greenport, Pike. Queens: 

 Cold Spring Harbor, Johnson. 



SPIRULINA Turpin. 



S. tenuissima Kiitz. 



Kings : Fort Hamilton, Gravesend, Pike. Queens : Cold Spring 

 Harbor, Johnson. 

 S. Thuretii Con. 



Queens : Cold Spring Harbor, Johnson. 



SPHAEROZYGA Ag. 

 S. polysperma Kiitz. 



Queens : Cold Spring Harbor, Johnson. 



LYNGBYA Ag. 



L. aestuarii (Jiirg. ) Laebm. 



Kings : Bay Ridge, Pike. Queens : Cold Spring Harbor, 

 Johnson. 

 L. luteofusca (Ag. ) J. Ag. 



Xot infrequent throughout coast. 

 L. ma'uscula (Dill.) Harv. 



Kings : Canarsie, College Point, Pike. 

 L. nigrescens Harv. 



Xot infrequent throughout coast. 

 L. tenerrima Thuret. 



Kings : College Point, Pike. 

 NODULARIA Martens. 



Kings : Bay Ridge, Hellgate, Pike. 



RIVULARIACEAE. 



CALOTHRIX Ag. 



C. convervicola (Roth) Ag. 



Not infrequent. 

 C. Crustacea (Sch.) B. & Thuret. 

 Kings : Bay Ridge, Pike. 



