244 THE MARINE BOTANIST, 



CERAMIUM BOTRYOCARPUM.^GRAPE« 

 FRUITED CERAMIUM. 



Filaments curved at the base, ramuli numerous^ 

 mostly simple or once-forked. Favellse in clusters^ 

 without surrounding" ramuli, colour a purplish red, 

 often fading to green and yellow. " This is known 

 from C. rubrum by its remarkable fruit, consisting 

 of a great number of favellae, without involucre, 

 heaped together like bunches of grapes. The 

 colour is generally darker and more purple than 

 C. rubrum, and the tips of the branchlets are 

 straight." These, according to Dr. Harvey, are 

 the principal characters on which it is proposed to 

 establish the species. Grows on rocks and algae 

 between tide-marks. Discovered by Miss Amelia 

 E. Griffiths in 1844, in great plenty on Preston 

 rocks near Torquay ; every subsequent season it has 

 been met with in equal abundance. Annual, in 

 perfection in June and July. Ardrossan, Ayrshire. 



