2i8 Dr. Goodenough and Mr. Woodward; Obfervafwm- on 



Habitat in faxis, rupibus, tignifque iub-marinis, necnon in Fucis 

 grandioribus Devonian et Cornubiae. 



Radix callus minutus vix expanfus — From 3 — 4nncialis, craflitie 

 fili emporetici, membranacea, tenera, filiformis, tubulofa, omnino 

 concatenatim articulata, ramofifiima — Rami primarii faepius dicho- 

 toiri, aliis conftanter verticillatis obfiti — Ramu 7 Vt aut oppofiti aut 

 verticillati funt, fupremi frequentiiTiiTie dichotomi — Planta fru&ifi- 

 cantc, ramuli unarticulati folia ovaiia mentientes verticillatim pofiti 

 articulos fupremos circnmdant, feminibus minutis rubris repleti — 

 Color pallide ruber vel purpurafcens, nonnuiiquam olivaceo-viridis. 



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

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

 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 ariie from the nature 

 and fituation of the fructification. 



The jointed ftructure gives this fpecies fome affinity with the 

 Ccnferv^e^ but the fruclincation again clearly points out the impro- 

 priety of placing it in that genus. 



The figure of Morifon. well exprefTes 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 fructification, there are generally whorls of fingie joints, 

 refembling oval leaves, furrounding fome of the fmaller branches ; 

 thefe perform the functions of tubercles, and contain numerous 

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

 nating 



