Ii8 Dr. GooDENoUGH and Mr. Woodward'^ Obfervations on 



Habitat in rupibus Infularum Jura. D. Light/not. Inter rejetSla-- 

 menta maris apud Yarmouth Norfolcis legimus. 



Radix callus paululum explanatus — i^;o«j' triuncialis ex albo vire- 

 fcens, nonnunquam etiam rubefcens, tenera — Caulis teres, filifor- 

 mis, crafTitic fill emporetici minoris, ramofus — Rami dichotomi, 

 fubdivaricati, caule vix tenuiores — Folia cylindrica utrinque atte- 

 nuata, nonnunquam bifida, fparfa, ad fuperiorem frondis partem 

 confertiffima, gelatinofa — FruBifaatio, tubercula numerofiflima, 

 minutiffima, l^te rubra, in foliis praefertim fuperioribus fita. 



This fpecics is fufficiently dlftinguiflied from its affinities, ovalis 

 and dajyphyl/us, in thedefi-riptions of thofe plants. That it has been 

 confounded with ova/is cannot be doubted by any one who confi- 

 ders the defcriptions of Hudfon and Lightfoot, and compares them 

 with the account given by Gmelin in his H'Ji. Fucorum (p. 162 — 

 186) of his two fpecies, vermicularis and polypodioides. Mr. Light- 

 foot's accurate defcription of vermicularis clearly points out this 

 plant; and though it was not neceffary for him to mark any dif- 

 tindions between this and Mr. Hudfon's ovalis, it is certain he con- 

 fidered them diftind, from his not quoting ovalis as a lynonym, or 

 taking any notice oiGmtYm 5 polypodioides. 



The fhape and growth of the leaves very much referable the 

 . Sedum album of Linn, as obferved in Fl. Scot. ; and this has induced us 

 to give to this fpecies the trivial name oifedoides, inftead of the un- 

 meaning one of vermicularis, which had been adopted from Gmelin. 

 The whole plant is more tender and gelatinous than ovalis, and 

 the frudification differs confiderably, confifting of extremely mi- 

 nute red tubercles, placed on the leaves, particularly the upper 

 ones, and fcarcely rifing above the furface. In this circumftance 

 It nearly approaches the genus Viva ; but when it is confidered^that 



the 



