(194) 



assuredly of very little importance as a specific character; all the species, 

 we believe, being more or less of a greenish olive when young, and 

 changing to a brownish or orange yellow when old. 



With resj)ect to the present species, the fructification is certainly the 

 most obvious character. The articulations in both ai-e much about tho 

 same, or in the present perhaps a little longer, being about as long as 

 their diameter in the main branches, and a little longer than their 

 diameter in the pinnules. 



We have been kindly favoured with specimens of the present species 

 in fruit from the Isle of Wight, collected by our kind correspondent, 

 Mr. Albert Hamburgh, as well as by other friends from the west 

 of England ; they are all marine, and are attached to old fronds of 

 Rliodymenia palmata. The fructification is mostly confined to the joints, 

 but occasionally a spore is observed immersed in the internode. 



ECTOCARPUS EKACniATUS. 



EXPLANATION OF DISSECTIONS. 



Fig. 1. — Brancli. 

 2. — Same. 

 3. — Fruit. All mamified. 



