252 THE MARINE BOTANIST. 



CERAMIUM FASTIGIATUM.— SOFT- 

 TUFTED CERAMIUM. 



^^ Filaments four or five inches high, very slender, 

 nearly of equal diameter throughout, regularly 

 dichotomous from the base -, the lower axils distant, 

 the upper very close, many times forked ; the 

 apices fastigiate and hooked inwards. Lower 

 articulations generally three or four times as long- 

 as broad, colourless; upper very short, rosy; dis- 

 sepiments opaque, swollen, purple. Substance tender 

 and flaccid. Colour of the tuft pinky purple. 

 Grows on rocks, &c., in tide-pools, rare." — Harv, 

 Torquay, &c. Plymouth. Frith of Forth. 



Section 3. — CiHata : frond armed at the dissepi- 

 ments, with one or more prickles, or bristle-like 

 hairs. 



