904. ^^ CRYPTOGAMIA ALGJE. 



mucous veficles with which the following 

 abounds, and which would fooner ferment and 

 become putrid. 



vs/rulofus F. fronde plana dichotoma^ coftata integerrima ; 



2' veficulis axillaribus geminis, terminalibus tuber- 



culatis. Syjl.nat.edit. 13./;. 812. Spec.pl. 1626. 



{Ger. emac. is6y. f. 4. Bajler. opufc. lib. vi. 



p. 120. /. II. /. 2.) 



Bladder Fucus, or Common Sea Wrack. Anglis, 

 Sea-ware. Scoiis. 

 Feamainn. Gaulis, 



Upon the fea rocks about low-water mark abun- 

 dantly, producing its frudifications in July and 

 Auguji. 



This has the fame habit, color, and fubftance as 

 the preceding, the leaf being} dichotomous 

 and ribbed throughout ; but it manifeftly differs 

 from it in the following refpefls ; — The edges 

 of the leaf have no ferratures, but are quite 

 intire — In the difc or furface are immerfed hol- 

 low fpha:rical or oval air-bladders, hairy within, 

 growing generally in pairs, but often fingle in 

 the angles of the branches ; about the fize of 

 large peafe or hazel-nuts ; which fome authors 

 fuppofe to be male-fru6lifications, but others, 

 with more appearance of truth, to be only air- 

 bladders deftined to buoy up the plant in the 

 2 water 



