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CHAPTER II. 



DESCRIPTION OF GENERA AND SPECIES. 



Sub-Class.— CBLOROSPOR^E. 

 Order.— SIPHONED. 



Genus.— BR YOPSIS* Lam. 



V71III: American genera of this order are ail inhabit- 

 C" ants of the warmer seas, except the Bryopsis 

 and that is represented by but one species in oui 

 northern waters. The characteristic of the order is 

 the tube-like structure of the different parts of the 

 frond. Each main stem branch or branchlet, is a 

 single long undivided cell, filled with a green granular 

 substam . ispended in the watery fluids of the plant. 



* L!iy<.pbis=Moss-l^c 



