35 THE MARINE BOTANIST. 



the rural name of ^^ Cows^ Tailsy^ L. digitata is 

 often hung- up in the cottages and poorer farm- 

 houses in England, where it serves the purpose of a 

 natural hygrometer. 



LAMINARIA BULBOSA— BULBOUS- 

 ROOTED LAMINARIA, or GREAT 

 FURBELOWED LAMINARIA. 



Frond long, narrow, undivided when young, 

 but when full grown leathery, thick, and cleft 

 into many narrow segments; the root is large, 

 hollow, and tuberous, thickly set with protu- 

 berances; from the base proceed strong fibres, 

 which fix and secure the plant in its growing place. 

 Young plants are at first unprovided with tliis 

 support; it shows itself in the middle of th 

 young stem like a small enlargement or collar, 

 which enlarges gradually, becoming broader and 

 quite flat, eventually forming a hollow-shaped 

 tuber, as described above. The fronds are very 



