39 



C. mucofa confragofis rivulis inn-fans. Dill. Hid. Mufc. p. 15. t. 2. f. 4. 



In the fupplementary plate A I have given a highly magnified drawing 

 by Mr. Young, of the appearance of capfules on this fpecies, which is 

 defcribed in my introduction. Although there can be fcarcely any doubt 

 of the propriety of the above references, as has been mentioned in my 

 remarks on Hudfon's fpecies, yet more than one fpecies having been de- 

 fcribed under the name of violacea, I have thought it beft to retain that of 

 decorlicans, by which it is now generally known, and which is very cha- 

 racteristic of the plant. 



10. muralis. C. fa lis fimplicibus, curvis, longis, rigidiufculis, fparfis, fafciatis 

 viridibus ; articulis breviffimis. T. 7. 



C. mural's. Roth. Cat. Bo!. III. p. 189. 



C.frigida. Cat. Bot. I. p. l65. Ft. Germ. III. pars. 1. p. 491. 



11. conftrvicola. C. fills fimplicibus, abbreviatis, fafciculatis, liberis, fafciatis, 

 intense scruginofis, apice acuminatis ; articulis breviffimis. T. 8. andT. A. 



Since the publication of this fpecies, Mr. Hooker has difcovered on 

 fome fpecimens, capfules furrounded by a pelludid limbus, and tranfverely 

 divided by a pellucid line in the fame manner as thofe of C. interrupt a. 

 The acuminated apices of this fpecies and of C. fcspulorum, have always 

 made me doubtful whether they fliould be regarded as true Ofcillatoria, 

 and this fufpicion has been ftrengthened by Mr. Hooker's difcovery. For 

 the highly magnified iketch of one of thefe capfules, made from a recent 

 fpecimen and given in my fupplementary plate A, I am indebted to Mr. 

 Hooker. 

 12.* fcoputorum. C. filis fimplicibus, curvis, abbreviatis, fafciatis, atro-viren- 

 tibus, baii per vifcofitatem cceherentibus, apice attenuatis ; articulis bre- 

 viffimis. T. A. 



C.fcopulorum. Weber, and Mohr Reife durch Schweden, p. 195. T. 3. 

 f. 3. Roth, Cat. Bot. III. p. 191. 



On Planks in the Sea, between Bognor and Aldwick ; Mr. Borrcr. 



