THE MARINE BOTANIST. 195 



rocks and stones at half-tide level, frequently wliei\^ 

 a small streamlet runs into the sea. Very rare. 

 Perennial. October to December. SidmoutL. 

 Exmouth ^Wery fine/' Mrs. Gulson. Torbay. 

 Gwyllyn-vase Bay, Falmouth "rare," Mr. W. P. 

 Cocks. St. MichaeFs Mount plentiful, and Long- 

 Rock in Mount^s Bay more sparingly. Whitsand 

 Bay, near the Land's End. Aberystwith. Ilfra- 

 combe. Lynmouth, Rev. W. S. Hore. Mineheaa, 

 Somerset local, but not scarce, I. G. 



GELIDIUM. 



" Name, from gelu, frost ; whence also gelatine, " None 

 of the species of the genus as it is now constituted are 

 gelatinous. 



Frond between cartilaginous and horny; com- 

 pressed, linear, more or less regularly pinnated- 

 Fructification: 1. Tubercles {favellidid) contain- 

 ing a mass of spores immersed in swollen ramuli. 

 2. Tetraspores in the ramuli. 



