four new Species ofFucus. 135 



have had a difficulty in diftingui(hing it. Thefe marks, which are 

 very obvious, will be altogether fufficient to enable any botaiiift to 

 determine between the plants ; but I extremely regret that, when I 

 had an opportunity of examining F. kaliformis frelh, I omitted fub- 

 jedtiiig the capfules to a ftrong microfcope, and feeing if the feeds, 

 which to the naked eye and in a dry ftate appear round, be not in 

 reality, as in F. clavellofus, rather cordate. If they be not, and I 

 wilh thofe naturaUfts who have it in their power would attend to 

 this circumftance, a fufficient and perhaps more fatisfaclory dif- 

 ference is at once eftablifhed. 



Fucus Wigghii. 



F. fronde filiformi fubgelatinos^ ramofiffima; ramis ramulifque 

 fetaceis ; fetis in filiculas lanceolatas mucronatas extenfis. 



Tab. X. 



Fig. I. Frons naturali magnitudine. 

 2. Ramuli particula lente aufta. 



Inter reje£tamenta maris apud Yarmouth rariffime ledta. 



Radix, ut in plerifque huic proximis, callus minutus. Frons filifor- 

 mis, teres craffitie fili emporetici minoris, vix fpithaniaea, ramofiffi- 

 ma ; rami fa^pius alterni, ramulis ita cin6li -ut pinnati quodam- 

 modo appareant : omnes, tarn maximi quam minimi, fetis, ut ita 

 dicam, cin£ti; quae plerumque fimplices, interdum autem funt bi- 

 furcae, interdumque, fed rariffime, ita divifje ut in ramulos novcs 

 tranfire videantur. Setas hce pedunculorum vice funguntur, fili- 

 culafque parvas, ovato-lanceolatas, feminibus repletas, in mucro- 

 nem definentes, ad extremitates ferunt. Semina faturate rubraj 

 minima, oculo nifi valdc armato, non difcernenda. Peduncu'i 



filiculis 



