the Britijh Fua\ with particular Defer ipt ions of each Specie u I gt 



to be the diftkhus of Linnaeus, From examining the Linnaean Her- 

 barium, and from Murray's defcription of diftkhus in the S\ft. Nat. 

 we are convinced that it is not a native of Britain. The difticbut 

 is quite thin and herbaceous — the ceranoides always membranaceous, 

 and of a firm texture. 



The branches have numerous fmall dots in rows on each fide of 

 the rib or nerve, as happens in ferratus and veficulofus : it varies in 

 height from three inches to nearly, or perhaps quite, two feet. 



As the plant grows old, it lofes the membrane of the whole 

 lower part of the frond. In this cafe it has the property of put- 

 ting forth new branches, which, growing clofe to each other, and 

 from their multitude not very large, give the plant a pretty fringed 

 appearance. Before it has lofl the membrane, this proliferous qua- 

 lity does not make its appearance. 



Mr. Laghtfoot's defcription mentions its being only a few inches 

 in height. It is very probable that in certain fituations, and efpe- 

 cially when remote from freih water, it may be of more humble 

 growth. 



25. F'UCUS SACCHARINUS. 



F. fronde fimplice enfiformi. Herb. Buddie, p. 21. Petiver, 

 vol. 1. p. 15. Act. Natures Curioforum, vol. 8. p. 450. /. g„. 

 f. 2. Gmelift, t. 28. 

 Var. /3. bullatus — fronde bullata marginibus undulatis. Buddie, 

 p. 22. Petiver, vol. 1. p. 16. Uvedale, vol. I. p. 14, 15. 

 Acl. Par if. 17 1 2. p. 29. t. 3. f. 4. Gmelin, t, 27. 

 Habitat in rupibus et faxis iubmarinis pafTim. 

 Radix fibrofa — From modo folitaria, modo gregaiia ; nempe ali- 



quandc 



