I know to which it bears any ftrong refemblance. Some parts of DiDenius' 

 defcription of his • Conferva mucofa confragofis rivulis inafcens' fo exatHy cor- 

 refpond with the prefent plant, th::t it may juftly be doubted, whether, when he 

 wrote his account of that fpecies, he did not blend two or three together : as, 

 however, Mr. Hudfon has referred that fynonym to a different plant, and all 

 fucceeding botanifts have followed him in fo doing, it is not worth difcufiing the 

 queftion." 



A. C. myochrous, natural fize. ■ 



B. C. Ditto magnified 2. 

 D. Ditto 1. 



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