THE MARINE BOTANIST. 263 



WRANGELIA. 



Name in honour of Baron von Wrangel, a Swedish 

 Naturalist. 



Frond purplish or rose-red, filamentous, jointed ; 

 filaments single tubed. Fructification : 1, gelati- 

 nous receptacles {favellce) terminating the branches, 

 surrounded by an involucre, and containing spores 

 compacted together. 2. tetrasporesy affixed to the 

 ramuli, scattered. 



WRANGELIA MULTIFIDA.— WHORLED 

 WRANGELIA. 



From four to six inches high, articulated, oppo- 

 site multified or whorled ramuli spring from each 

 joint; in the variety jS pilifera these are much 

 lengthened, half an inch long, and either simple or 

 pinnate. The joints of the stem are much longer 

 than broad, but vary much in length in difierent 

 specimens. Tetraspores on the ramuli either oppo- 



