THE MARINE BOTANIST. 141 



soft. Colour, a pinky red. Parasitical on the 

 smaller algae, on most parts of our coasts, growing- 

 in tide-pools near low water-mark. 



CHYLOCLADIA ARTICULATA.— JOINTED 

 CORALLINE-LIKE CHYLOCLADIA. 



Fronds arising from a mass of fibres, tufted 

 from one to six, and sometimes twelve inclies long. 

 The contractions strongly marked throughout ; 

 branches springing in a forked manner; ramuli 

 either opposite or whorled. Colour, pale red 

 purple, transparent. Substance membranaceous. 

 Grows between tide-marks, on rocks, and the 

 larger algae. Annual. Summer. Frequent. 



CORALLINACE^.— CORALLINE TRIBE. 



'^ Rigid, articulated, or crustaceous, mostly cal- 

 careous sea-weeds, purple when recent, fading on 

 exposure to milk-white, composed of closely packed, 

 elongated cells or filaments, in which carbonate of 



