51 



On Lichens. In the New Foreft ; Mr. Lyell. About Belfafi ; Mr. 

 Tanplcton. In Houghton and St. Leonard's Foreft, Sufiex ; Mr. Barter. 



This fpecies is nearly related to C. aurea, from which fome of the fila- 

 ments feem fcarcely to differ, except in their Fmaller fise. 



70. attrea. C. filis ramofis ccefpi;ofis, abbreviatis, auveis ficcitate ilcmura 

 cinereis ; ramis longis patentibus rigidiufculis, fub-incurvis ; articulis cy- 

 lindraceis, diametro fefquilongioribus. T. 35 and T. C. 



Since the publication of my defcription of C. aurea I have difc.vered it 

 with capfules, which are reprefented in the fupplementary Plate C. mag- 

 nified 1. C. Ulc'icola of Englifh Botany does not appear to me at all difdncr, 

 from this fpecies, and I have been favored by Mr. Temjdeton with fomc 

 fpecimens gathered on the trunks of Quercus Ilex, in Lord Dungannon's 

 Park, near Belvoir, in Ireland, with capfules prccifely refembling thofe of 

 C. aurea. 



71.* oiivacea. C. filis ramofis, erectis, ccefpitolis, implexis, abbreviatis, rigidi- 

 ufculis, fufco olivaceis-, ramis fubfimplicibus, alternis, obtufis; articulis 

 longitudine diametrum requantibus. T. C. 



-On Marine Rocks in Papa Weftra, Orknies. Air. Borrer and Mr. Hooker. 

 I am indebted to Mr. Borrer for fpecimens of this hitherto nond'efeript 

 fpecies, which, in company with Mr. Hooker, he difcovered during their 

 late tour through Scotland. The filaments of a brownifh olive color, are 

 not more than a quarter of an inch in length, and grow fo matted together 

 a6 to form a minute turf on the rocks. It may be diftinguifhed from C. 

 radicans, to which it feems mo ft nearly allied, by its different mode of 

 growth, fhorter filaments and longer joints. The drawing was made by 

 Mr. Hooker from a dried fpecimen, and reprefents a filament when mag- 

 nified with powers 3, 2 and 1 of his microfcope. 



72.* radicans. C. filis ramofis hie illic radicantibus, ftriclis, rigidaifculis, 

 fufco olivaceis ; ramis fimplicibus, fparfis, eredis, obtufis, bafi attenuatis ; 

 articulis diametro fub-dimidio -brevioribus. T. C. 



H 



