melli, noticed in the specific phrase by most authors, is not 

 constant, for these are often forked in the present species, though 

 more usually simple. The colour is darker than that of C. ver- 

 ticillatiis, and, on the whole, the present is a much less elegant 

 plant. The accessory ramelli, which constitute the SpJiacelaria 

 Bertiana of Italian writers, are found on this species equally as 

 on C. verticittatus. The figure of Dillwyn which represents ovate 

 capsules, discharging spores through a terminal pore, appears to 

 be incorrect ; at least, I have never seen anything similar in the 

 multitudes of specimens which have passed through my hands. 



C. s]jo?igiosus is a very common plant throughout the northern 

 Atlantic, growing on rocks and stones between tide marks, and 

 is also found in the Baltic and Mediterranean Seas. Dr, Hooker 

 collected specimens at Hermite Island, Cape Horn, which offer 

 no character by which they can be distinguished from individuals 

 of British growth. 



Fig. 1. Cladostephus spongiosis : — of the natural size. 2. Apex of one of 

 the branches. 3. Ramelli. 4. Fertile ramelli, produced in winter. 5. 

 Spore or utricle, in situ : — all more or less magnified. 



