CONFERVA ^EREA. 



C. filamcntis Gmplicibus rigidiufculis ftriftis ; diffepimentis byalinis con- 



traftis, articulis oblongis brevibus. 



On Stones in the Sea at Cromer, D. Turner. At the entrance of Laugharne 

 Harbor; at Ifmael's Ferry, and other parts of the Carmarthenfhire Coafl, 

 JV. W. Young. About Swanfea. 



THIS fpeeies, which hitherto appears to have efcap.ed the obfervation of any 

 author, was, above four years ago, fent by Dr. Gogclenough to D. Turner, under 

 the name of C. JErea, and has fince been found by my friend W. W. Young on 

 feveral parts of the Coaft of Carmarthenfhire -, nor is it by any means unfrequent 

 on the Chore about Swanfea. Several filaments iflue from the fame root; they 

 vary considerably in fize. At the beginning of the winter before laft I found 

 one nearly of the thicknefs of a crow quill, but they arc mod generally about 

 equal to large thread. They are invariably fimple : their length is from fix to 

 fifteen inches; the color a dark or bluifh green; they are brittle and rigid like 

 C. capillaris, but not at al! curled or entangled as in that fpeeies ; the filaments 

 contraaed at the diflepiments, which are remarkably pellucid and colorlefs ; the 

 length of the joints is lefs than their diameter, and two together often appear, 

 whofe united length is precifely the fame as that of one of the others, as if they 

 had originally formed only a fingle joint ; they are rounded at each end, which 

 gives the filament its beaded appearance. No fructification has been difcovered. 



When dried the filament affumes a more cylindrical form, and under the 

 higher powers of the microfcope longitudinal fibres are obfervable. It adheres 

 but ilightly to cither glafs or paper. 



A. C. concatenata, natural fize. 



B. Ditto magnified 2. 

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