13° ■^'*' Turner's Defcr'iptions of 



Fuci the capfules, when mature, burft, and immediately die away ; 

 while the feeds, from that vifcidity which they are known fo emi- 

 nently to poflefs, adhere to the furface of the frond, till, upon the 

 whole plant at the end of autumn pafling into decay, they attach 

 themfelves to the ftems of the larger fpecies, or rocks, as the force 

 of the fea carries them, and there remain fixed till the latter months 

 of the following fpring again awake their vegetative powers. 



Excepting Fucus Hypoglojfum there is none in the Britifli lift with 

 which Fucus rufcifolius can poflibly be confounded, and 1 {hall there- 

 fore trouble the Society with no more upon the fubjedt. 



Fucus crenulatus. 



F. fronde plana coriace^ linear! dichotomS, ; ramorum apicibus bi- 

 furcis oblongo-lanceolatis. 



Tab. VIII. 



Fig. 3. Planta naturali magnitudine. 

 4. Frondis apex lente au£lus. 



Habitat prope Durium flumen in Lufitanise littoribus ; /3 apud Du- 



brem. D. L. W. Dillwyn. 

 Perennis ? Floret Augufto, Septembri. 



Radix callus expanfus, fibrarum aliquot craffiufcularum rudimentis 

 plerumque in{lru6lus. Frondes pliirimas, vix palmares, plans, 

 enerves, flipiti brevi, tereti infidentes, late expanfas, undique di- 

 chotomy, lineares, fingulari modo, prsfertim extremitates versus, 

 obtufd, fed et minutiflime crenatas. Apices bifidi, angulis acutis, 

 in lobos oblongo-lanceolatos defmentes. Rami plurimi, nunquam 

 proliferi. Frudificatio tubercula hemifphserica, magnitudine fe- 



minis 



