the Brltlj}} Fuci^ •with particular Defer ipt ions of each Species. 197 



pofTcfrion fpecimens agreeing exacSlly with the defcription, and with 

 the figure of Pctiver there quoted. 



We have never had an opportunity of examining this fpecies in a 

 recent flate, but have been favoured by Mr. Stackhoufe with a draw- 

 ing accompanied with an account of the plant; from which, and 

 from dried fpecimens, we have been enabled to draw up the fore- 

 going defcription. 



The dried fpecimens, preferyed in Petiver's and Buddie's HorUa 

 f ecus in the Britifh Mufeum, are exceedingly good ones. 



52. FUCUS DIFFUSUS. 



F. fronde filiform! dichotoma articulata ; ramis divaricatis dif- 

 fufis apiceacutis. F/. ^«^/./. 589. 

 Habitat in rupibus & faxis fubmarinis — apud Weymouth, Haf- 

 tings, & alibi. 



RaJix callus parvus expanfus — Fro?is filiformis, dichotoma, ra- 

 mofa, faepius ramofiflima, fill emporetici minoris craffitie, ramis di- 

 varicatis, difFufis, articulatis, articulis brdviflimis, apice acutis — 

 Magnitudo biuncialis, dodrantalis— 6«^/7«//<7 cartilaginea — Color ru- 

 bens — Frudlificatio nondum a nobis vifa eft. 



We have felt fome little difficulty in arranging this fpecies among 

 the F«c/. Its habit and jointed form, and want of frucftification 

 as far as we have been able to obferve, indicate fo clofe an affinity 

 to the genus Conferva^ that we were almoft tempted to omit it. 

 However, as we have reafon to believe that this is the plant de- 

 figned by Mr. Hudfon, under this name, we looked upon the 

 onus probandi as laid upon us, if we ventured to alter his arrange- 

 ment. The fubftance is of a firmer texture than Conferv<f ufually 



are; 



