PILL-WORT. 
393 
PILL- WORT, [natural size), 
PiLULARIA GLOBULIFERA, LinneUS. 
The Pill-wort or Pepper-grass is found on the extreme mar- 
gins of ponds, or on swampy ground, submerged during the 
winter and more or less exposed during the summer. It is 
sometimes so abundant as to form a dense and almost inextrica- 
bly matted covering to the ground. In no instance that has 
come to my knowledge has it been found in deep water, or in a 
state of constant submersion. 
It is widely— but not very generally or abundantly — distributed 
over England and Wales : the following localities are all of 
which I have made memoranda. 
Anglesea. — Mr. Wilson informs me he has found it at Llan- 
faelog, in this county ; and the Rev. Mr. Davies says that it 
occurs in spongy meadows and ditches. 
Caernarvonshire. — Mr. Babington informs me he has found 
it in Llanberis lake ; and Mr. Wilson in Llyn Idwel. 
