the BiitiJJj Fuci, with particular Defcriptions of each Species. 147 



only it is extremely twiftcd : however, the contortion of the frond 

 in Fuci is no charader of clifl:in6tion, as occafionally it is fcen in all 

 the varieties above mentioned. The volubilis of Linnxus is not a 

 Biitilh plant. 



He who would wilh for farther information, would do well to 

 confult Gmelin, Lightfoot, and others, who have written largely 

 upon the fubjedl. 



Its true and conftant charaiSter is veficles on the branches, and 

 at the axilte of the dichotomies. 



The figure of Morifonyi 15. /. %.f. 10, as quoted by Gmelin to 



his a, and by Hudfon to his variety /2, belongs to that variety of 



fpiralis which has plain and entire margins, and not to vejiculofus. 



The fynonyms of Gmelin are to be received with great caution : 



he has fallen into many miftakes. 



In Buddie s Herbarium, p. 7. «. 4, 5. are fpecimens of vejiculofus ex- 

 tremely tvvifted. They are the fpiralis or volubilis of Mr. Hudfon, 

 not of Linnaeus and Mr. Lightfoot. There . is a note fubjoined, 

 mentioning, that they were gathered near Fambridge ferry in EfTex. 

 They are our laft variety, if indeed any exa£t limit can be drawn 

 between that and the firft; for, as we have already obferved, 

 contortion feems accidental in this fpecies. 



23. Fucus spiralis; 



F. fronde plana dichotoma asquali, apicibus tumidis tubercula- 

 tis obtufis. 

 Var. a. undulatus — ramis margine fub-undulato, apicibus obtufif- 

 fimis. Herb. Linn. Buddie^ p. 6. n. 1. R. Syn. p. 41. n. 5. 

 Fl. Dan. t. 286. Linn. Sp. PL 1627. Fl. Ang. p. 577, 

 Fl. Scot. p. 911. Stackhoufe, Ner. Brit. p. 10. /. 5. 



U 2 Var, 



