304 THE MARINE BOTANIST. 



entangled, woolly tufts, an inch long, pale green. 

 Very closely related to C. arcta and C. imcialis, 

 from the former of which it differs chiefly by its 

 smaller size and less branching filaments, and from 

 the latter more by habit than by any very decided 

 character." 



C, uncialis. Grows on rocks near low water- 

 mark. Torquay. St. Michael's Mount, Cornwall. 

 Aberystwith. Newcastle, coast of Down. Rathlin, 

 Antrim. Common at Balbriggan. Rocks beyond 

 Kingstown. Malahide. Malbay, west of Ireland. 

 Jersey. Orkney. Tufts an inch high, dark green, 

 spongy. ^^This," Dr. Harvey remarks, ^^more 

 nearly resembles C. lanosa than any other of our 

 native species, and sometimes cannot be readily 

 distinguished without a close examination ; but it 

 forms much more dense and spongy tufts, which 

 finally become more intricately woven together; 

 and the apices are seldom so distinctly fastigiate as 

 in that species. The habitat in which C. unciahs 

 occurs affords an additional clue. It usually fre- 

 quents rocky places, growing on the rock itself, or 



