M. pulchrum Farlow. 



Frequent. 



M. latissimum Thur. 



Queens : Colri Spring Harbor, Johnson. 



ULVA L. 



U. enteromorpha Le Jolis. 



Common along the coasts. 

 U. Lactuca (L. ) Le Jolis. 



Common along the coasts. 

 U. clathrata Ag. 



Common along the coasts. 

 V. Hopkirkii (McCalla) Harv. 



Queens : Cold Spring Harbor, Johnson. 

 V. aureola (Ag. ) Kiitz. 



Queens : Cold Spring Harbor, Johnson. 



ULOTHRICHACEAE. 



ULOTHRIX Kiitz. 



U. flacca (I)illw. ) Thur. 



Frequent along the coasts. 

 U. isogona (Engl.) Thur. 



Frequent along the coasts. 



CONFERVA (L.) Lagehn. 



C. vulgaris Rab. 



Kings : Prospect Park. 



CHAETOPHORACEAE. 



DRAPARNALDIA Ag. 



D. glomerata Ag. 



In pools, quite commonly distributed. 

 CHAETOPHORA Schrank. 

 C. pisiformis (Roth) Ag. 



Kings : Canarsie, Greenwood, Brainerd. 

 C. endiviaefolia Ag. 



Kings : Greenwood, Brainerd. 



TRENTEPOHLIA Ag. 



T. virgatula (Harv. ) Farlow. 



Kings: College Point, Pike. Common in Long Island Sound, 

 Farlow. 



BULBOCOLEON Prings. 

 B. piliferum Prings. 



Suffolk : Greenport, Pike. 



