72 COMMON SEAWEEDS. 



Chondetjs Noryegicus. — A native of Norway. 

 Small arid delicate. Often found on the south coast of 

 England. 



CLADOSTEPHUS. 



(Name meaning a " branch " and a " crown.") 



Dark green tufts from three to nine inches high, 

 much branched, unjointed, rigid, whorled with short 

 ramuli, spores borne by additional small branches. 



This will soon be found in a deep tide-pool. It dries 

 of a darker colour, and will require fixing on the 

 paper. Two species only are on our list — 



Cladostephtts Verticillatus ("Whorled Clado- 

 stephus), and a shorter, more bushy, spongy kind, 

 called Cladostephus Spoxgiostjs, because it really 

 feels like a sponge when taken from the water ; and 

 the chief difference between them is in the shorter 

 bristles whorled round the stem, and that this species 

 is of a dirty brown or dirty olive green. 



On both these seaweeds we find Polysiplionia of 

 several kinds. 



. CHOEDAEIA ELAGELLIFOEMIS. 



(Name from chorda, a cord.) 



Very quickly are we likely to notice in most half- 

 tide pools a brown, branching, glistening weed, that 

 feels soft and slimy in the fingers, about the size of 



