228 BRITISH SEA-WEEDS. \_RJiodos]:ien)ie(B. 



Hab. On rocks or stones near low- water mark, or more 

 frequently dredged in deeper water. Annual. Summer. 

 Frequent in the south of England^ and not rare in the 

 south of Ireland. Got in Orkney, and not very rare in the 

 \vest of Scotland, where it has been repeatedly dredged off 

 Arran and Cumbraes and the coast of Ayrshire by Major 

 ^Martin and D. L. It has been found at Southend, Kintyre, 

 by the Eev. Mr. Lambie. It is much more common in 

 England and in Jersey. 



AYhen the colour is rose-red, as it often is, this is a 

 beautiful plant, especially if the frond is broad ; but it is 

 very variable in form. At times the frond is quite narrow 

 and dichotomous. For the fruit and structure, see Phyc. 

 Brit., PI. cxii. 



Genus LXI. GIIVNANIA, Mont. 

 Gen. Char. Frond terete, dichotoDious, merabnmaceo-gelali- 

 uous, traversed by a fibrous axis, from which slender, dichoto- 

 mous, horizontal filaments radiate towards the membranous 

 periphery ; sm'facc cellules hexafj:onal. Fructilication, spherical 

 masses immersed in the froud, athxed to the inner coating, com- 

 posed of radiating filaments, whose apical joints are converted 

 into spores. — Name in honour of Count Ginnani, an Italian 

 botanist. — Harvey. 



