Plate XLIX. 



Fig. 220. DUDEESNAIA COCCINEA. 



Colour, Rosy-red; pinkisli when young. 



Substance. Yery tender and gelatinous; loose and slippery-feeling. 



Character of Frond. Cylindrical stem and brandies; rather distantly^ and 

 very irregularly divided (alternate, opposite, forked, or secund); each 

 set gradually finer upwards. Branchlets much divided; young 

 specimens, when seen through a lens, looking as if beaded with rose- 

 coloured dots owing to the structure {densely -tufted, dichotomous 

 filaments, whorling a colourless axis!) 



Measurement. From 4 to 8 inches long. 



Fructification. Of two kinds. 1. Dark red globules of sjpores attached to 

 the filaments which form the outer layer of the frond. 2. Tetrasjjores 

 in transparent cells similarly placed. Very rare. 



Habitat. Southern shores of England and Ireland. On rocks near low- 

 water mark; or from deep water. Very rare. 



Fig. 221. DUDKESNAIA DIVARICATA. 



Colour. Pale red. 



Substance. Gelatinous; very soft; elastic. 



Character of Frond. A cylindrical, thread-like {filamentous), much-branched 

 stem; undivided; set with long opposite or alternate, horizontally- 

 spread branches. Branches three or four times re-branched; all the 

 branches alternate; horizontally spread. Branchlets numerous; 

 horizontal; obtuse. 



Measurement. From 3 to 6 inches long. 



Fructification. Only one kind known. Globules of spores attached to the 

 filaments which form the outer layer of the frond. 



Habitat. The warmer stations on our coasts. On stones and the smaller 

 algae near low- water mark; and deeper. Very rare. 



Now HehdntJiora divaricata. 



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