BJwdomelece.'] polysiphonia. 301 



capillary branches in rich tufts adorn the tips of the branches, 

 it is a beautiful plant, especially when the tufts are of a fine 

 rosy-red colour. 



23. Polysiphonia elongella, Harvey. (Plate XI Y. 

 fig. 55, portion of the frond, natural size; a, branchlet with 

 capsules ; h, a branchlet with tetraspores, both magnified.) 



Hab. On rocks and Algse ; rather rare. Biennial. Spring 

 and summer. England, Mrs. Grifiiths, Miss Cutler, Eev. 

 W. S. Hore ; Ireland, Miss Ball, Miss Gower, Mrs. Apjohn, 

 Mr. W. Thompson, Dr. Drummond, Mr. D. Moore, Mr. 

 M^Calla; Orkney, Eev. Mr. PoUexfen; Ardrossan, Major 

 Martin ; D. L., Saltcoats ; by Miss H. M. AYhite, Jersey. 



This is one of the lovehest of our marine Algae. In early 

 summer, when arrayed in its new attire with rich tufts of 

 crimson ramuli, it is extremely attractive. These crimson 

 tufts form a good contrast with the darker hue of the stems. 

 The summer specimens we have got on the coast of Ayrshire 

 are more beautiful than any we have seen, even from Devon- 

 shire. In winter it is rigid, and quite in undress. "The 

 winter and summer aspects of a cleciduous tree are not 

 more different from each other than are specimens of this 

 beautiful plant collected at opposite seasons. ^■' In winter 

 the abundant pencils of rosy-red ramuli have all fallen 



