224 & r ' CiOODenough and Air. Woodward' j Ohfervahons on 



\)X\z?X?i--SuhflanUa cartilaginea rigida — Color recentis plantas fufcef- 

 cens, ficcatGE niger — Fructtficatio incognita. 



This fpecies, which was unknown to any of our Englifh authors 

 as of Britifh growth, is one of thofe in which the limits of the ge- 

 nera Fucus and Conferva too nearly approach each other; in confe- 

 quence of which it has been confidered by the author of FI. Dan, 

 as a Corferva, though placed by Linnaeus in the genus Fucus. 



The frond, of which three or four generally arife from the fame 

 bafe, is about fix or eight inches high, either fimple, or throwing 

 out a few fhort branches, which are rarely again divided. The 

 lower part, for about the fpace of an inch, is always naked; but the 

 whole of the remainder, to the fummit, is clofely imbricated with 

 ■fhort fubulate branches, either fimple or once divided, and termi- 

 nating fomewhat obtufely. Thefe ramuli have frequently, but not 

 conftantly, a fomewhat jointed appearance, which has occafioned 

 its being confidered by'Oeder as belonging to the genus Conferva. 

 As neverthelefs the Rem is perfectly free from this appearance, and 

 the rough and fquarrofe habit of the plant accords better with the 

 Fuel, and as it approaches confiderably in habit and character to 

 the Fucus pinafroides, which has alfo fome of its extreme ramuli 

 with a jointed appearance, we have thought it mofl proper to fol- 

 low the authority of Linnaeus, and arrange it as a Fucus. 



The fructification has not yet been difcovered, but will probably 

 be found analogous to that of Fucus pnajlroides, next in order to 

 which we have placed it. 



It has been found amongft other rejectamenta on the beach at 

 Yarmouth in Norfolk. 



69. Fucus 



