the Briti/h Fuci, with particular Defer ipt ions of each Species. 167 



3$. FUCUS PINNATIFIDU3, 



F. fronde cartilaginea ramofa ; ramis patentibus fub-duplicato- 

 pinnatifidis, ramulis obtufis callofis. Herb. Buddie, p. 18. 

 ». 7, 8. Petiver, p. 25. n. I, 2. Uvedale, p. 12. n. 4. Acl. 

 Pari/. 17 1 2. p. 34.'/. 4. / 6. M?r. J2J?, Oxon. iii. /. 646. 

 / I* t. %.f. 2. ' 

 Fucus Ofmunda. Gme/in, p. 155. /. 16. jC 2. 

 F. pinnatifidus. Gmelin, p, 156. /. 16. f. 3. 

 F. pinnatifidus. FL Ang. p. 581. F/. Scot. p. 953. Withering 



vo/.^.p. 247. 

 F. multifidus. FY. Ang. p. 581. JVithering, vol. 3. /. 248. 

 F. fi lie in us. F/. Sec/. ^. 954. 

 Habitat in rupibus et faxis marinis frequens. 

 Radix callus expanfus ex quo cauliculi plurimi conferti oriuntur 

 . — From cartilaginea plana avenia ramofior, ramis et ramulis difti- 

 chis oppofitis alternifque — Ramuli breves, modo truncati, faepius 

 apice obtufo rotundato, et pra? tuberculis innatis, ut videtur, callofo. 

 Rami pro habitu et loco, pinnatifidi, 2 — ^plicato-pinnatifidi et 

 multifidi — Altitudo 1 — 5uncialis — Subjlantia fub-cartilaginea — Color 

 variat flavefcens, olivaceus, et ex olivaceo ruber — Fruelificatio tuber- 

 cula ad ramulorum apices. 



Fucus pinnatifidus varies very much with refpecl: to the divifion 

 of its frond. Hence botanifts have imagined it to contain different 

 fpecies, and have been at no fmall pains to afcertain their refpective 

 limits. As it happens to be a very common plant, frequent have 

 been our opportunities of obferving it. After very careful and re- 

 peated examinations, we can venture to pronounce that the pinnati-. 

 fidus and multifidus of Hudfon and the pinnatifidus and filicinus of 



Lightfoot 



