CRYPTOGAMIA ALG^, 



919 



Moris, hift. Ox. p. 647. fe^. 15. t. 8. f. 2. or- 

 dinis inedii. Reaumur, a^. Gall. 1712. />. 26. 

 /. 31. Bajler. opufc. VI. p. 121. /. ii./. 5. 

 Ofi. D^«. /. 146. Gmel. hifi. fucor. p. 78. 

 tab. i.B. /^. I. et var.fig. 2.) 



Knobbed Fucus. Sea-Whiftles. Anzlis. 



Upon rocky fliores common. VII. VIIL 



The ftalks of this fpecies are conimonly about 

 two feet long, and nearly a quarter of an inch 

 wide ; but are found, from a foot to two yards 

 in length, lying procumbent on the rocks ; 

 their fubftance hard and cartilaginous j ;heir 

 color olive when frelh, but blackifii when dry. 



Thefe ilalks are linear, comprefs'd, and generally 

 dichotomous, hui fometimes the branches grow 

 pinnated. The^are furnidied with flat, feffile, 

 wedge-fhaped, or oblong blunt leaves, about 

 half an inch in length, growing dillichous out 

 of the edges of the ilalks, either oppofite or 

 alternate, and either one, two, three or more, 

 from the fame bafc or focket, 



Thefe leaves, in the fru6tified flate, become tur- 

 gid at the extremities, and full of Mucus, in 

 which are imbedded numerous fmall grains or 

 feed-bearing capiules. 



In the middle of the ftalk and branches grow, one 



above another, at unequal diilances, large oval 



hollow air-bladders, wider than the llalk itfelf, 



N n n 4 and 



