CONFERVA ROTHII, 



C. filamentis cre<ftis dichotomls bneyibus denfiffime csefpitofjs pbaeni- 

 ciis j ramis altcrnis, ariiculis breviufeulis. 



C. Rothii. Turton's Syftem of Nature, VI. p. 1806. 



C. violacea. Roth. Cat. Bot. I. p. 190, t. 4. f. 1. III. p. 224. Fl. Germ. III. 

 pars. 1. p. 525. 



On a Rock by the Sea-fhore on the N. E. Coaft of Anglefea, between Trofy- 

 marian and Penmain Park. — Rev. Hugh Davits. 



I RECEIVED fpecimens of the prefent beautiful fpecies from my friend the 

 Rev. Hugh Davies, who firft noticed it in Britain. He informs me, that it 

 grows on a tophus, formed by the conftant dripping of frefh water from an 

 impending rock on the north-eafb fide of Anglefea, between Trofymarian and 

 Penmain Park, which is wafhed by the fea at fpring-tides, and in rough weadier. 

 It appears to have been firft difcovered by Dr. Roth, on the piles placed on the 

 fhore, near Eckwarden, in the Duchy of Oldenburg. He defcribed it under the 

 name of C. violacea in his Cataledta Botanica, but as Hudfon, in the Flora 

 Anglica, had previoufly taken up a very different plant under that denomination, 

 I have followed Dr. Turton, who, in his Syftem of Nature, has altered its name 

 to that of C. Rothii, in honor of its firft difcoverer. 



C. Rothii grows in patches of various fizes, generally, according to Dr. Roth, 

 affecting an oblong form. The color is a bright red, fometimes tending to brown, 

 and changing, when dried, to a beautiful Ihining crimfon ; the filaments are very 

 (lender, frequently not more than three lines, and, I believe, never exceeding an 

 inch in length •, they are erect, denfely matted together, and much branched ; the 



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