PROPERTIES AND USES. 395 



Ophioglossum vulgatum. 



Adders' Tongue Fern in this country is extensively 

 collected by herb gatherers ; being mucilagenous it is used 

 in the preparation of salves, but now, with its congener, 

 the moonwort, its use has become obsolete. 



Helminfhostachys dulcis. 



A native of Ceylon, India, and Malay Islands, and is 

 used as a pot herb; the young fronds are eaten as 

 asparagus. 



