THE MARINE BOTANIST. 137 



men so nearly resembles one of the American 

 specimens, that it might have been supposed to 

 be from the same locality, while Mrs. Hay den's 

 in its rather broader form approaches the Orkney." 



CHYLOCLADIA. 



Name signifying juicy branch, in allusion to the succulent 

 frond. 



Frond (at least in the branches tubnlar) con- 

 stricted at regular intervals, and divided internally 

 by partitions 5 each division is filled with a watery 

 fluid, and traversed by a few longitudinal filaments. 

 Fructification. 1. Spherical, ovate, or conical cera- 

 midiaj containing a tuft of wedge-shaped spores ; 

 2. Tripartite tetraspores, immersed in the smaller 

 branches and ramuli. 



CHYLOCLADIA OVALIS.— OVAL-LEAFED 

 CHYLOCLADIA. 



Fronds two to ten inches high, naked below, 



