■ CRYPTOGAMIA ALG.^. 943 



We obferv'd it upon the coaft of Bute and Jona, 

 in great plenty, &c. VIII. 



This is a moft elegant fpecies, of a bright-red or 

 purple color, and thin, membranaceous, pel- 

 lucid fubflance. 



The ftalk is fhort, roundiOi, and branched. The 

 leaves are of an oval oblong form, intire, but 

 waved on the edges ; from fix to twelve inches 

 long, and from one to three inches wide; 

 ribb'd in the middle throughout; the rib pin- 

 nated with oppcfite or alternate nerves. 



The frudlifications we have never yet obferv'd. 

 Oeder has drawn them like fmall, oval, pedun- 

 culated veficles, growing in a fpike out of the 

 footftalk, at the bafe of the leaf. 



ruhens. 25. F. frondibus membranaceis oblongis undulatis 

 finuatis, llirpe tereti ramola. Syfi. nat. edit. 13, 

 jp. 816. Sp. pi. 1630. n. 27. (Mart. cent. 32. 

 /. 32. FUCUS crenatiis. Gmel. hifi. fucor. 

 p. 184. /. 24. /. I. Oeder. Dan. t. 652. bon.) 



Red Oak-leav'd ferrated Fucus. Anglis. 



Upon thefhores of Jona^ and other places, plen- 

 tifully. VIII. 



The color of this is red ; the fubflance mem- 

 branaceous, very thin and delicate ; the whole 

 length from four to fix inches. 



The ftalk is fhort, round, and branched. The 



leaves 



