130 Dr. GoonEuovGB and Mr, Woodward'/ Obfervatwns on 



fome fort of callous expanfion, as we -.know that fuch are the roots- 

 of their affinities finicukceus and fbrcfus. 



I3, F'JCUS ERICOIDES. 



F. fronde filiform! ramofiflima, foliis fubularis, terminalibus 

 confertis arete imbricatis, bafi tuberculiferis. Herb. Linn. 

 Buddie ', p. 18. n. 2. 19. n. 2. 5, P ether, p. 40. n. 3. 

 Fucus erica marina. Gmeiirs^ p. 128. & II. f 2. — non bona, 



Linn. MSS. 

 Fucus tamarifcifolius. FL Ang. 576. Withering, 3. p. 239. 

 Habitat in rupibus fubmarinis in Infula. Portlandia. — In corn. 



Cornubise, Devoniae, Eboraei. 

 Radix callus expanfus craffus durus — Frons primo ortu dura lig- 

 nofa teres, at frequentius ramis vi fluctuum abruptis, fuperficie in- 

 asquali. Haud mora ramofa fit ramis omnibus dense ftipatis 

 — Rami longiufcull in plurimos ramulos alternatim fitos divi- 

 duntur. Hi ramuli folia plurima alterna fubulata gerunt inferne 

 remotiufcula, fuperne conferta arete imbricata— Ad apicem ramulo- 

 rum haic folia bafi extus tubercula exhibent, minuta, rotunda, gla- 

 berrima, veficulas referentia, quse fructificationem praeftant — Color 

 nigricans — Altitudo 3 — 9 uncialis, 



Obf. Tubercula ad bafm foliorum, foliis ipfis fub-duplo ampliora. 



Mr. Hudfon confounded our F. ericoides and fclaginoidcs under the 

 same tamarifcifolius, and, imagining them to be one and the fame, 

 framed his defcription accordingly. We have fpoken fufficiently 

 of fthginoides under that article. F. ericoides is conftantly diftin- 

 guiihable by its numerous branches growing clofe together in the 

 manner of a fhrub, and by its leaves alternate and fomewhat re- 



6 mote 



