THE MARINE BOTANIST. O 



prevalence of southerly gales, it is uprooted, and 

 chokes up all the harbours and bays along the 

 coast. On the Fuegian shores, species of the 

 genus Lessonia are particularly abundant ; they 

 resemble in their growth submerged forest trees : 

 among their branches harbours an infinite vaiiety 

 of animal hfe, and beautiful species of parasitical 

 algce grow on their long woody stems. Nor are 

 the humbler forms of our Tangles (Laminarias), 

 without inhabitants; various kinds of MoUuscse, 

 Crustacese, (fee, harbour in their fibrous roots ; and 

 the stems of Laminaria digitata are generally 

 adorned with a luxuriant growth of the smaller 

 and more delicate species of parasitic sea-weeds. 

 The tribe of the Dictyotacese are distinguished by 

 the net-like appearance of the surface of their 

 fronds when viewed through the miscroscope. 

 Many of the more rare and beautiful among the 

 flat-fronded species flourish along the southern 

 shores of England and Ireland. 



Dictyota dichotoma is about the commonest 

 species, and the curious Padina Pavonia is the 



