418 Canadian Record of Science 



U. tenerrima, Kiitzing. 



Filaments 7-9 micr. diam., cells cylindrical, 

 chromatophore contracted to one side of cell, 

 pyrenoid, single. In light green, silky masses. 



Mount Royal, Amherst Park. 



Microspora crassior, Hansg. 



Filaments long, dark green, nearly cylindrical. 

 28-33 micr. diam. cells 1-16 diam. long, with 

 wall 2.5-3 micr., thick, chromatophore dense, 

 covering whole cell wall. 



Bout de Tile, Mount Royal. 



Family 2. (Edogoniaceae. 



OEdogonium sp? 



Bout de l'lle, Back River. 



Family 3. Chaetophoracese. 



Chaetophora incrassata (Huds.) Hazen. 



Thalli irregularly extended, branched, closely 

 packed, main filaments elongate, secund 

 branches, setiferous ramuli, cells of main fila- 

 ments 8-16 micr. diam. 2-6 diam. long, ramuli 

 6-11 micr. diam. cells 1-2 diam. long. 



Verdun. 



Stigeoclonium tenue (Ag.) Kiitz. 



Tufts up to 1 cm. high, bright green, filaments 

 slender, 7-10 micr. diam. below, 5-6 micr. in 

 ramuli, cells cylindrical 1-3 diam. long, about 

 equal in ramuli, main branches opposite, ramuli 

 numerous, tapering to slender seta. 



Bout de l'lle- 



