the Br hip Fuci, with particular Defer ipt ions of each Species, 197 



pofTeffion fpecimens agreeing exactly with the defcription, and with 

 the figure of Petiver there quoted. 



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

 recent ftate, 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, preferved in Petiver's and Buddie's Hortus 

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



52. FUCUS DIFFUSUS. 



F. fronde filiformi dichotoma articulata; ramis divaricatis dif- 

 fufis apice acutis. Fl. AngLp. 589. 

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

 tings, & alibi. 



Radix callus parvus expanfus — Frons filiformis, dichotoma, ra- 

 mofa, faspius ramofiffima, fili emporetici minoris craffitie, ramis di- 

 varicatis, difFufis, articulatis, articulis breviflimis, npice acutis — 

 Magnitudo biuncialis, dodrantalis — SuhJIantia cartilaginea — Color ru« 

 bens— FruEiificatio nondum a nobis vifa eft. 



W T e have felt fome little difficulty in arranging this fpecies among 

 the Fuci. Its habit and jointed form, and want of fructification 

 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 Conferva ufually 



are 5 



