132 THE MARINE BOTANIST. 



LAURENCIA OBTUSA.— BLUNTED LAU- 

 EENCIA. 



^^ From three to six inches high -, the stem as 

 thick as pack-thread, of the colour of isinglass, but 

 the outer coats of the branches and their segments 

 have a beautiful pink colour." The ramuli are 

 mostly opposite, short, wedge-shaped, and blunt. 

 Ceramidia ovate on the smaller branches; tetraspores 

 immersed in the ramuli. Substance tender and 

 flaccid, but soon decomposing. Colour a fine but 

 fleeting pink. This plant is said to smell like violets. 

 Grows on the larger algae. Annual. Summer and 

 Autumn. Shores of England and Ireland frequent, 

 but rare in Scotland. Frith of Forth, Ayrshire, 

 Ardrossan, Arran. 



LAURENCIA DASYHYPLLA.-SEDUM- 

 LEAVED LAURENCIA. 



"Fronds from four to twelve inches high, the 



