the B? iti/h Fuc/\ with particular Def captions of each Species. 147 



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

 in Fuci is no character of diftinttion, as occafionally it is feen in all 

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

 Britiih plant. 



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

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

 upon the fubject. 



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

 at the axilla? of the dichotomies. 



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



his a, and by Hudfon to his variety /3, belongs to that variety of 



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



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



he has fallen into many miftakes. 



In Buddie's Herbarium, p. 7. n. 4, 5. are fpecimens of veficuhfus ex- 

 tremely twifted. 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 EfTcx. 

 They are our laft variety, if indeed any exact 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. 2. R. Syn. p. 41. n. j. 

 Fl. Ban. t. 286. Finn. Sp. PL 1627. Fl. Ang. p. SU- 

 FI. Scot. p. 911. Stackboufe, Ner. Brit. p. 10. /. 5. 



U 2 Var. 



