220 Dr. GooDENOUGH and Mr. Woodward'j Obfervations on 



pany with very accurate obfervations, taken on the fpot, we do not 

 hefitate to defcribc it as diftincl from arliculatus. It differs in the 

 texture, Avhich is cartilaginous and foiid ; in the form of the arti- 

 culations, which are broader and fhorter, in proportion to the fize 

 of the plant, and which are ufually comprefTed, though fometimes 

 y they may be found filiform ; in the difpofition of the branches, 



' which in this are always dichotomous ; and in colour, this being of 



a deep red or purple, whilft articulatus is always pale, though both 

 fpecies are fubjecl to have the upper joints tinged with green. The 

 place and mode of growth are very different, arliculatus growing 

 not only on the rocks, but being very frequently parafitical on the 

 larger and coarfer Fuci, which are ufually fubmerfed : opuntia, on the 

 contrary, is always found on the naked, and often on the perpen- 

 dicular rocks, between high and low water-mark. The frond ad-- 

 heres to thefe rocks by a fmall callous knob, from which fhoots. 

 arife, which, where they touch the rock, adhere, and throw out 

 branches ; thus forming large tufts, exadlly in the manner of the 

 Lichens. The branches are dichotomous, but never verticillated in 

 the manner of arliculatus ; and in thefe, we apprehend; as well as 

 the terminal ones, the feeds are to be found. 



66. FUCUS VARIABILIS. 



F. fronde filiforml ramofiffima, ramis fubimbricatis, ramulis 



brevifTimis fafciculatis acutis. 

 F. confervoides. Fl. Ang. 591. 

 Habitat inter rejedlamenta maris apud Yarmouth ia Norfolcia— 

 apud Exmouth in Devonia, fed rarius. 

 Rcdi^t fibrofa furculos emittens, unde novae oriuntur plantae* 



Frons 



