258 THE MARINE BOTANIST. 



with an obscure appearance of articulation ; branches 

 beset with short, hair-like, simple or subdivided, 

 scattered ramuli. Colour a dull red, fading to 

 brownish." — Harv. Man, Grows attached to rocks 

 between tide-marks. Southern shores of England. 

 Jersey. Holyhead. Aberfraw, Anglesea ; plentiful. 



GRIFFITHSIA. 



Named in honour of Mrs. Griffiths, of Torquay, Devon, 

 whose many discoveries in and intimate knowledge of the 

 marine algas are so well known to all Algologists. 



Frond rose-red, filamentous ; filaments articulated 

 throughout, mostly dichotomous; ramuli single- 

 tubed, often whorled ; dissepiments hyaline. Fruc- 

 tification: 1. roundish gelatinous, receptacles (fa- 

 vellae), containing minute spores ; 2. tetraspores 

 affixed to whorled ramuli. 



