THE FIEST-TIEE POOL. 31 



Claeophoea Pellucie2E. — This grows in tufts 

 from four to six inches high : rigid erect filaments, 

 forked, and with bunches of little branches on the 

 older stems, which distinguish the plant. Sometimes 

 it is wearily difficult to a young botanist, the discern- 

 ing of species, but this one requires only the observa- 

 tion of the forks at the tips of filaments; the long cells 

 reaching always from joint to joint ; and its general 

 rigid, wiry nature. 



In drying it fades and does not adhere well to paper. 

 This is most common in the south of England — Tar- 

 mouth, Falmouth, Isle of Wight, Channel Islands. 



Cladophoea Diffusa grows on rocks in grass- 

 green or dark green tufts, so rigid as to bristle up 

 when taken from the pool. It adheres but not strongly 

 to the paper ; and observe the number of small cells 

 in the stem between the branches, also that the 

 branches are distantly placed, and not by any means 

 numerous. 



Cladophoea Laxosa. — This specimen will teaea 

 you not to despise small tufts growing upon other 

 common coarse seaweeds, such as the Fucus, on every 

 rock, even at high tide ; for if you examine small yel- 

 lowish silky tufts upon the stem, you will obtain this 

 CladopJiora, and a variety of other more beautiful 

 seaweeds which I will describe hereafter. I do not 

 recommend this species for the herbarium, as it fades 

 so much in drying, and loses its gloss, but it is worth 

 observing with a lens or microscope. 



