47 



In a rapid ftreamlet at Coftefy, Norfolk. IV. J. Hsiker, Efo. 

 Mr. Hooker, who alone has difcovered, this fpecies in Britain, informs 

 me that he has feen the filaments carried oiJt by the current to the length 

 of fifteen or twenty feet : their thicknefs is fomewhat greater than that of 

 C. tortucfa, from which it may be at once diftinguifhed by its longer joints, 

 as well as by the curious manner in which they become alternately com- 

 preffed when the plant is dried without preflure. Mr. Hooker has dif- 

 covered lateral acuminated procefles iffuing from the filaments, precifely 

 fimilar to thole which Vaucher has figured on his Prolifera crifpa, and the 

 plant in other refpe£ls fo far accords with his defcription, as to leave no 

 doubt of the propriety of the above reference. He informs me that there 

 is a fpecimen of this fpecies preferved in the Linnxan Herbarium, with the 

 name of C. capillaris, but Linnxus in his defcription refers to the Hiftoria 

 Mufcorum, and it is certain that the fpecies there figured is what I have 

 reprefented at T. 9. I cannot therefore fee the neceflity for any alteration, 

 which as that plant is now almoft univerfally known by the name of 

 capillaris would in my opinion only tend to confufion. The drawing at 

 plate B, for which I am indebted to the liberality of Mr. Hooker, repre- 

 fents C. crifpa magnified 2. 

 31. capillaris. C. filis fimplicibus, rigidiufculis, crifpatis, fragilibus, laxe im- 

 plicatis, craflis, viridibus ; articulis diametrum longitudine vix cequantibus. 

 T. 9. 



&. minor. Filis triplo tenuioribus. 



For reafons given in the foregoing obfervations on C. crifpa, my former 

 reference to the fpecies Phntarum fhould have been omitted. Mr. Hooker 

 favored me with fpecimens of what I have here arranged as a variety, 

 which he difcovered growing mixed with C. crifpa, far from the neighbour- 

 hood of the fea, in the river at Hellefdon, near Norwich. The filaments 

 are thrice more flender than thofe of C. capillaris, which with its different 

 place of growth, feems to indicate that it fhould conftitute a feparate 



