Acrostichum
Acrostichum
Acrostichum L.
Engl.: leatherfern.
Acrostichum lingua:
Acrostichum lingua Thunb., Polypodiaceae: See Pyrrosia lingua (Thunb.) Farw.
A herbal distance course
Henriette's herbal is one of the oldest and largest herbal medicine sites on the net. It's been online since 1995, and is run by Henriette Kress, a herbalist in Helsinki, Finland.