2i8 Dr. GooDENouGH and Mr. Woodward'/ Obfervatlom on 



Habitat in Taxis, lupibus, tignifque fub-marinis, necnon in Fucis 

 grandioiibiis Devoniae et Cornubias. 



Radix callus minutus vix expanfus — Frons 3 — 4nncialis, craffitie 

 fili emporetici, membranacea, tenera, filiformis, tubulola, omnino 

 concatenatim articulata, ramofiffima — Rami primarii faepius dicho- 

 toir.i, aliis conftanter verticillatis obfiti — Ramuli aut oppofiti aut 

 verticillati funt, fupremi frequentiffime dichotomi — Planta frudifi- 

 cante, ramuli unarticulati folia ovalia mentientes verticillatim pofiti 

 articulos fupremos circumdant, feminibus minutis rubris repleti — 

 Color pallide ruber vel purpurafcens, nonnunquam olivaceo-viridis. 



This plant has been arranged amongft the Ulva; by Mr. Hudfon, 

 but was removed to the genus Fucus by Mr. Lightfoot, the frudli- 

 fication according with that genus ; and this arrangement we choofe 

 to follow, there being no certain limits to be drawn between the 

 two genera of Fucus and Viva, but fuch as arife from the nature 

 and fituation of the frudlification. 



The jointed ftrufture gives this fpecies fome affinity with the 

 Conferva^ but the fruilification again clearly points out the impro- 

 priety of placing it in that genus. 



The figure of Morifon well exprefles the habit of the plant. The 

 principal branches are ufually dichotomous, and throw out, at in- 

 tervals, whorls of fomewhat fmaller branches, ufually four or five 

 in a whorl, which are again divided into fmaller, fometimes oppofite, 

 fometimes verticillate ; the terminations are ufually dichotomous. 

 When in fru6lification, there are generally whorls of fingle joints, 

 refembling oval leaves, furrounding fome of the fmaller branches ; 

 thefe perform the fundtions of tubercles, and contain numerous 

 dark red feeds ; and the fame are alfo found in fome of the termi- 

 nating 



