LAMINARIACE^E. 53 



whether it is not entitled to rank as a distinct species. 

 The stem is longer and less rigid, and the whole frond 

 is much more more limp and slender than the ordinary 

 form of L. digitata. There is also a difference in the 

 root. 



Laminaria bulbosa. Bulbous Laminaria. 



Stem flat, with a waved margin, and having a hollow 

 bulb or tuber just above the root; frond oblong, cleft into 

 several strips. 



The distinctive character of this plant is the bulb 

 from which it takes its name, and which is to be found 

 in specimens of all ages. 



Laminaria longicruris. Long-stalked Laminaria. 



Stem ei^ht to ten feet long, solid at the base, becoming 

 thicker and hollow in the middle, and thence tapering up- 

 wards; frond from six to eight feet long, and from two to 

 three feet wide, oval, waved at the edge, rounded at the top. 



This is another of the waifs and strays of foreign 

 climes which has been occasionally found on our shores 

 in a very worn and imperfect state, and which has, I 

 fear, but small claim to be admitted to a place among 

 our native Sea-weeds. Dr. Harvey has included it in his 

 ' Phycologia Britannica/ and I follow his example. It 

 is abundant on the coast of North America. 



Laminaria saccharina. Sugared Laminaria. 



Stem cylindrical, slender; solid ; frond leathery or almost 

 membranous, lanceolate, entire. 



This is a very well-known common species, and is 

 probably familiar to many of my readers as the cottager's 



