82 



cidedly of opinion that they are perfectly diftindt. It differs in having its 

 main filament of far greater thicknefs than the reft, and the whole of its 

 branches remarkably Itraight and erect, while the habit of the other is par- 

 ticularly bufhy. The outline too of the two fpecies is very diftimilar, that 

 of C. fitcoides being nearly orbicular, but that of C. nigrefcens narrowly 

 cuneiform . 

 156.* urceolata. C. filis ramofiflimis, venofis, diffufis, rufo-fufcis ; ramulis 

 patentibus, brevibus •, articulis caulis longis, ramulorum brevioribus. T. G. 

 C. nigrefcens. Fl. Aug. p. 602 ? 



On Rocks and the larger Fuci in the Sea. On Items of F. digitate*, 

 and on Rocks oppofite the Bathing-houfe at Scarbro' ; Sir T. Frankland. 

 On ftems of F. digitatus in the Ifle of Wight ; Mr. Turner and Mr. Borrer. 

 Alfo on the fame Fucus on the Beach at Brighton -, Mr. Borrer. Near 

 Forres ; Mr. Brodie. Devonfhire Coaft ; Mifs Hill. 



For fpecimens of this plant I have to exprefs my obligations to Sir 

 Thomas Frankland, who, as mentioned under the preceding fpecies, fent 

 it to me by the name of C. nigrefcens of Hudfon. Mr. Turner informs 

 me that he has feen it in fome Herbaria marked by Mr. Lightfoot, " C. 

 urceolata, M. S." an appellation peculiarly appropriate, as the capfules differ 

 in their fhape from thofe of every other Conferva, and approach, efpecially 

 when dried, thofe of Splachnum urceolatum or ampullaccum. It moft com- 

 monly grows parafitically on the larger Fuci, and as remarked by Mifs 

 Hill, looks then at firft fight like red wool. Its color in that itate is a fine 

 rich brown red, which would hardly be fuppofed from the dull black that 

 it affumes in drying. The veins or tubes which compofe the filament are 

 fewer than thofe of C. fucoides and bear more refemblance to thofe of C. 

 Jlricla. The joints towards the root are long, but become gradually fhorter 

 as they approach the ultimate ramult, in which their length fcarcely exceeds 

 the diameter. The drawing at Plate G was made by Mr. Hooker from a 



