the Britj/b Fuci, with particular Defer iptlons of $acb Species', 199 



lengths, and not faftigiated or level ; from dift'ufus, by havin^ its 

 branches all blunted at the end, and fwclled by the fru&ification 

 included in them ; and from p/icatus, by its upright, fimple and 

 unentangled growth. 



The plants found at the Ifle of Portland are ufually of humble 

 growth, and are well reprefented by Dr. Withering* s figure : but 

 at Ilfracombe in the north of Devonfhire they are of a much taller 

 figure, and the divifions of the frond are very numerous. 



The fructifications are always at the ends of the branches, and 

 imbedded in the fubftance of them. The plant in a recent flute 

 is always of a pale olive colour, but when dried it turns nearly or 

 quite black. 



It adheres to the firmed rocks very ftrongly by means of a thick 

 leathery fubftance, from which feveralftalks fometimes arife in a 

 fort of clufter. We have never obferved it growing upon movea- 

 ble ftones, but only on the fixed firm rock. 



54. FtTCUS FASTIGIATUS. 



F. fronde filiformi dichotoma ramofiflima ; ramis faftioqatis 

 obtufis, angulis ramificationum fub-rectis. Herb. Linn. Pe- 

 liver, p. 31. n. 4. Mori/on, Hi/?. Ox. 3. p. 649. / 15. /. g, 

 f. 9. FI. Dan, 393. optima. 

 Far, Interceptus. Dichotomiis ultimis omnibus geniculato- 

 annulatis. 

 Habitat in rupibus et faxis marinis paflim--/3 apud Cromer in 

 Norfokia. 



Radix callus expanfus — fed frons ad bafin valde furculofa — Surcu- 



li ubi faxa attingunt difco novo explanato, qui radix alterius fit, faz- 



pius adhaerent, unde caulicuh plurimi conferti affurgunt— Hi cauli- 



2 culi 



