15-i BKITISH SEA -WEEDS. [J\Iela7iosperm€(B. 



fiiniished witli a limbus, pedicellate, borne on accessory ramuli. 

 — The name is from two Greek words, signifying a branchy and 

 a crown. — Harvey. 



1. Cladostephus verticillatus, Lpigh. (Plate IV. 

 fig. 14, a branch of C. verticiUatus, natural size; and at 

 the base on the left a small portion of a branch with a 

 whorl, magnified.) 



Hab. In the sea, on rocks and stones. Perennial. Pruiting 

 in winter. It is pretty common in most places. It is not 

 common, however, on the coast of xVyrshire, but when I say 

 the coast of Ayrshire, I generally mean that part of it \^dtli 

 which I have the opportunity of being best acquainted, 

 viz., some dozen miles or so, in the neighbourhood of Salt- 

 coats and Ardrossan. The sea-coast of Ayrshire, strictly 

 speaking, extends nearly ninety miles. On the opposite coast 

 of Arran this species is pretty common. 



The filaments are from three to nine inches in length; 

 the colour olive-brown, becoming browner in drying. It 

 does not adhere to paper. 



%. Cladostephus spongiosus, Afjarclh. 



This is a commoner and a clumsier plant than the pre- 

 ceding. 



