the Briti/b Fuci, with particular Vefcriptions of each Species. 113 



In feme of the older fpecimens, but very rarely, thefe proceflTes are 

 aifo to be feen on the nerves, as well lateral as principal, on each 

 fur face of the leaf; and even on the naked nerve, where it has been 

 deprived of its membrane. When in this ftate they are of different 

 fizes, and clearly fhew themfelves to be really proliferous leaves, 

 evincing the remarkably ftrong reproductive property polTeffed by 

 this fpecies, to which the various forms in which it appears are 

 principally owing ; for, in a very advanced ftate, it frequently hap- 

 pens that the membranaceous part of the leaf is much torn and de- 

 stroyed, the ribs then appear like branchings of the Item, and from 

 every part of them young leaves are feen to arife, and even from 

 the ribs and nerves of the decaying leaves. 



The whole plant is bright red, the leaves membranaceous, ex- 

 tremely thin and delicate ; the fructification deep red, when ripe 

 nearly black. 



jS. a variety occurs, though rarely of a fubftance approaching to 

 cartilaginous, in which the proceffes on the margin are more dif- 

 tant, much larger, and appear flat to the naked eye, mewing them- 

 felves to be teeth and not fpines or cilia, each having, when in 

 fructification, a larger and more conspicuous tubercle imbedded in 

 it. We have met with this variety only at Cromer on the coaft of 

 Norfolk. 



4. Fucus Hypoglossum. 



F. caule ramofo alato, foliis lineari-lanceolatis planis integer- 

 rim is proliferis. Linn. Tranf. v. 1. p. 30. t. 7. 

 F. Hypogloffum — F. lingulatus. Solander in Herb. Bankf. 

 Habitat in rupibus fubmarinis fatis frequens. 

 Radix callus minimus craffus — Frons 2 — 3 uncialis Iaste rubra, 

 Vojl. III. Q membranacea 



