226 THE MARINE BOTANIST. 



circular^ afterwards irregularly shaped; between 

 g-elatinous and leathery -, wholly composed of ver- 

 tical filaments set in a colourless jelly.'' — Harv. 

 Common on smooth exposed rocks and stones 

 between tide-marks. Perennial. Fruiting in Feb- 

 ruary. West of Ireland very abundant. 



NACCARIA. 



Named in honour of F. L. Naccari, an Italian Algologist. 



'' Frond cylindrical or compressed; filiform^ rose- 

 red y central cells large^ empty ; those of the 

 surface minute. Hamuli composed of jointed, 

 dichotomouS; whorled filaments, surrounded by free 

 gelatine. Fructification: spores attached to the 

 whorled filaments of the swollen ramuli." — Harv, 



NACCARIA WIGGHII.— WIGG'S 

 NACCARIA. 



Frond from six to twelve inches high, filiform, 

 cylindrical ] main stem set with alternate branches, 



