902 CRYPTOGAMIA ALG/E. 



ferraltis I. FUCUS fronde plana dichotoma coftata lerrato- 

 dentata, frudtificationibus terminalibus tubercu- 

 lofis. 



Syjt. Nat. edit. 13. p. 811. Sp. pi. 1626. (Moris, 

 hiji. 3. p. 648. fe^. 15. /. 9. /. I. Bajler. 

 cpufc. lib. 6. p. 120. n. 3. tab. 11. Jig. 3.) 



Serrated Fucus, or Sea Wrack. Anglis. 



Upon the fea rocks about low- water mark. Fre- 

 quent at all feafons of the year, but produces 

 its feeds in July and Augiijl. 



It confifts of a flat, radical, dichotomous leaf, 

 about two itct lono-, the branches half an inch 

 wide, ferrated on the edges with dents ot un- 

 equal fize, and at unequal diftances, and having 

 a flat fl:alk or rib, divided like the leaf, and 

 running in the middle of it through all its va- 

 rious ramifications. 



The fru(5tifications appear like tumid circular 

 grains, with a pun6lurein their centre, generally 

 crowded together for the fpace of an inch upon 

 the fummits of the branches, and frequently 

 imbedded here and there throughout the whole 

 furface of the leaf, but not implanted on mu- 

 cilaginous veficles, as in the following fpe- 

 cies. 



Upon both fides of the leaf are frequently fcen 

 fmall pencil-like clufters of fliort v;hitifli capil- 

 lary fibres, which fome have fancied to be male- 



flowers. 



