Ulvacem.'] BANGiA. 325 



Genus XCIV. BANGIA, Lpigli/e. 



Gen. Cliar. Prond flat, capillary, membranaceous, of a green, 

 reddish, or purple colour. Fructification, granules arranged 

 more or less in a transverse manner. — jSTamed Bangia, in honour 

 of Hoffman Bang. — Greville. 



1. Bangia' Pusco-PURPUREA, Lyngl. 



Hab. On rocks and planks of wood in the sea. Annual. 

 Spring and summer. Brighton, Mr. Borrer ; Cornwall, 

 Mr. Eashleigh ; Bantry Bay, Miss Hutchins ; Prith of 

 Forth, Professor Walker iVruott; Isle of Bute, lii'. Greville; 

 Isle of Arran, D. L., jun. ; Portincross, Ayrshire, Major 

 Martin. 



Fronds growing in a tufted manner, and generally 

 covering a considerable extent of rock ; colour, a fine dark 

 purple, which it retains in drying* k. curious circumstance 

 is that it is found in beauty both in the sea and in fresh- 

 water rivers. 



It is generally thought that this plant is rare in Scot- 

 land. We were once of that opinion, but have since had 

 reason to think tliat we had been treading upon it every 

 spring without observing it. When the tide is out, it 

 clings so closely to the rocks that it may be passed without 



