230 THE MARINE BOTANISr. 



from which often arise another series of similar 

 branches J all the extremities of the frond drawn 

 out and pointed. This species, in ontward aspect, 

 somewhat resembles Dumontia filiformis 5 but seen 

 under a lens of low power, the branches appear, it 

 is said, like tubes of g-lass, densely covered with 

 brilliant purple studs. Substance tender, soft, and 

 slippery, but not very elastic. Colour varying- 

 from a fine deep purple-red to a dull pink, rapidly 

 given out in fresh water, and becoming browner in 

 drying. Grows on stones, and in sandy places 

 among' Zostera^ near low-water mark. AnnuaL 

 Summer, Eare, Sidmouth. Exmouth, Mrs. 

 Gulson ; remarkably broad in the frond. One 

 specimen this lady informs me she found^ in the 

 autumn of 1849, "in height not more than seven 

 and a half inches ; but the breadth of the fronds is 

 most remarkable, in some parts measuring more 

 than an inch across, and in many places three- 

 quarters and an inch ! It is so different from the 

 usual examples found at Torbay or Sidmouth, that 

 only a microscopic examination would convince the 



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