the generic Charadler ofUlva, ^c. 53 



approaching Boletus, but without pores, and is not un'il'.e B. verfi- 

 color. Whether Ulva montana Ligbi. 973 be the fame with this, 

 or to what genus it properly ought to be referred, muft be deter- 

 mined by inch perfon^ as may have an opportunity of examining 

 it in its native place of growth. 



Ulva atomaria — fronde membranacea plana dilatati palmata : 

 fegmentis linearibus fubramofis fubciliatis. Species nova. 



Radix nulla, nifi bafis frondis paululum explanata, fuperne 

 tomentofa. — Frons brunnea, tenerrima, membranacea, plana, 

 dodrantalis vel femipedalis, a tenui principio orta ftatim late- 

 fcens, et port paululum progreflus in plurimas lacinias divifa. 

 Lacinise lineares, ad originem fimplices, dein fubramoi^e, mar- 

 ginibus nunc integris, nunc cillis paucis brevibus furfum ten- 

 dentibus obfitis. — Fru<5lificatio — granula feu femina minutiffi- 

 ma, intra utramque frondis paginam fita, et in fafciis tranfverfioi 

 concentricis congefta. 



Inter rejectamenta maris apud Yarmouth, Norfolciae, in- 

 venit D. Wigg. 



This elegant plant was found by Mr. Wigg on the beach at 

 Yarmouth, and is fuppofed to have been walhed from the rocks, 

 either at Cromer to the northward, or Harwich to the fouthward 

 of that place. The fubftance is membranaceous, extremely thin 

 and delicate ; the colour an earthy brown, varying in different 

 fpecimcns, of a lighter or darker fhade, but always having a con- 

 fiderable degree of tranfparency. The height of the largeft fpeci- 

 mens hitherto found has not exceeded fix or feven inches ; the 

 breadth about half as much. lu fome the frond is fuddenly dilated 



into 



