910 CRYPTOGAMIA ALG^. 



pair immediately under it. The angular one 

 is often bifid or lunular, which occafions a 

 wide ftradling or divarication in that angle of 

 the leaf. The fru6tifications are fimilar to 

 thofe of the preceding, but not fo large, th 

 plant itfelf which produces them being fmaller. 



inflatus 4. F. fronde plana dichotoma integerrima pundata 

 ovato-lanceolata inflata, apice divilb. Syjl. nat. 

 812. 



F. fronde bifida, lacihiis ovato-lanceolatis infiatis, 

 apice bifidis. Sp.pl. 1627. (Fig. nulla fJenda.) 



Inflated Fucus. Anglis. 



Upon the Ihore near Mufslehurgh. 



Mr. Talden. VII. VIII. 



This has all the habit of the F. 'ueficulofus^ and is 

 fuppofed by Gmelin to be only a variety of it. 

 Its chief charafler confifts in this, that the up- 

 permoft fegments of the leaf are inflated longi- 

 tudinally, as if air had been blown in between 

 the two furfaces. Thefe inflations fometimcs 

 run fingly on one fide of the middle rib of the 

 leaf, but more frequently another runs parallel 

 to it on the oppofite fide. They feem to have 

 much of the fame nature and ufe with the air- 

 bladders in the F. veficulofus. And in fome 

 fpecimens a few air-bladders are found placed 

 here and there in the angles of the branches. 



The 



