taken, especially by tliofe who have only feen the figure of that plant in the Flora 

 Danica. It often may be found on pieces of decaying wood, &c. but I much 

 doubt its at all adhering to them, as it does not appear to poflefs any root ; it 

 confifls merely of a filament equally"obtufe at both ends, and divided regularly by 

 difTepiments at very fhort distances from each other. 



Dillenius's C. gelatinofa, omnium tenerrima, &c. * publifhed in the fecond 

 Fafciculus of this work under the name of C. limofa, I am inclined to fufpeft 

 is only the prefent fpecies in a younger ftate, and that when covered with water 

 that plant in time rifes to the furface and aflumes the appearances here defcribed, 

 the principal difference is in the fize and color; in C. fontinalis the filaments 

 are much larger, the color browner and not glofTy as in C. limofa ; the joints 

 alfo are far more diftindi and more regularly difpofed. It is nearly allied to C. 

 decorticans, but differs materially in fize, in color, and in its much fhorter 

 joints, nor does it ever form the denfely matted patches, which give a ftriking 

 character to that fpecies. 



The growth of C. fontinalis is aftonifhingly rapid, and M. Adanfon's obfer- 

 vations, from which I have given an extract in the defcription of C. limofa, 

 apply equally to this and that plant. 



When dried it alters its appearance but little, and adheres firmly to either 

 Glafs or Paper. 



A. C. fontinalis, natural fize. 



B. Ditto, magnified I. 



» Hift. Mu'c. p. 15. t. ». f.j. 



