THE LOWEST-TIDE POOL. Ill 



a starling's wing, and makes a lovely specimen. It 

 seems to prefer the rough waves of the northern coast, 

 and grows in deep rock-pools at lowest tide. In "Wales 

 the plant is very delicate and finely formed. "We get 

 very good specimens sometimes after a storm. 



Sphacellaeia. Cieehosa is quite a common species, 

 parasitic on larger Algce, floating sometimes in little 

 round halls on the surface of a rock-pool. It does 

 not adhere well to paper, but makes very pretty loose 

 sprays for basket fancy work, to mix with zoophytes 

 and Plocamium. 



Sphacellaeia Filicesa. — This grows on rocks at 

 low-vrater mark, from two to four inches high. It 

 has a little sister plant of great beauty, SjjJiacellaria 

 Sertularia,bvLt both are very rare: probably -we should 

 only find it on the roots of Laminaria, thrown up 

 after a storm. Miss White and Miss Turner have 

 found it in Jersey. 



Sphacellaeia Fusca, Sphacellaeia Radicals, 

 Sphacellaeia Bacemos a. — These are all small varie- 

 ties not often found. 



Fructification of this seaweed is very'simple, merely 

 oblong or pear-shaped spores, seated on the branches. 



