Ectocarj^ere.'] sphacelaria. 157 



shire coast, but found in several places in the Island of 

 Arran. 



■^ "^ Stems nahecl at the base. 



4. Sphacelaria plumosa, Lyncjhye. 



Hab. On rocks at low- water mark, and in rock-pools. 

 Perennial. Found by Mr. Borrer at Beachy Head ; Sir J. 

 Eichardson and Dr. Greville, Trith of Torth ; by Mr. Ealfs 

 in England and Wales ; by Mr. W. Thompson, Belfast Bay ; 

 Miss Gower, Howth ; Eev. Mr. Pollexfen, Orkney ; Major 

 Martin, Ayrshire; D. L., Island of Arran; D. L., jun., 

 Joppa, Prith of Forth. 



Professor Harvey says that this beautiful pla-nt is pecu- 

 liarly a northern one. The figure given in Phyc. Brit., 

 PI. Lxxxvii., is taken from a Welsh specimen, and, though 

 true, I doubt not, to nature, is greatly inferior to those we 

 get in the west of Scotland. Those found at Ardrossan 

 and in Arran are finer in colour and broader in the frond. 

 However, D. L., jun., sent me specimens gathered by him 

 in a rock -pool at Joppa, near Edinburgh, which, though 

 very different from those got by us on the west coast, will 

 stand a comparison with them in beauty. The fronds are 

 numerous ; they are scarcely so large as the western ones, 

 but they are beautifully feathered; and instead of being 



