the Britj/h Fuel, with particular DeJ captions of each Species. t tj£ 



we have every resfon to think that it is fo in the fmooth variety of 

 faccharinus. 



Specimens of F. digitatus have been gathered at Harwich 

 with fwellings on the lower part of fome of the fegments, and 

 both digitatus and bulbofus have been obferved in Cornwall with 

 fwellings on the upper part of the fegments, as reprefented in FL 

 Dan. Whether thefe fwellings were mere inflations, or full of 

 mucilage, was not obferved ; however, no feeds were obferved in 

 them. The fame fort of fwellings appear mfaccharinus var. a , but 

 no feeds have been difcovered. However, all this confirms us in our 

 idea of the analogy between all thefe plants, and of the propriety of 

 calling our faccharinus var. <* the perfect plant, and bullatus the acci- 

 dental variety. We are thus al fo more ftrongly peifuaded to look 

 upon the mucus contained in the finuofities merely as the natural 

 confequence of fuch cavities in an extremely mucilaginous plant. 



Both thefe fpecies grow to a-*vaft fize, from one to nearly five 

 yards. 



Meffrs. Fongeroux de Bondaroy and Tillet, in their very ingeni- 

 ous treatife upon marine plants, Acl. Pari/. 1772, have confounded 

 digitatus and bulbofus together, alleging that the fipes is both round 

 and flat. 



28. FttCUS LACERATUS. 



F. fronde membranacea tenerrima ramofa; ramis ramulifque 



fublinearibus apice obtufrs. 

 F. laceratus. Gmelin, 179. /. 21./? 4. 

 F. endiviaefolius. Fl. Scot. p. 948. t. 32. 

 F. crifpatus. Fl. Ang. p. 580. lFithering\ vol. 3. p. 247. 

 ¥ar. /3 papyraceus — ramis ramulifque tenuioribus fub-finnatis* 



X 2 Far. 



