Pretty much another thing you can find out in the woods. Its an extremely slow growing plant that is harvested for its root. Sometimes its eaten raw or put into teas. The Chinese thought it was a cure to all diseases, so maybe it could be put into a tea for maximum effect or eaten raw for half effect. Maybe an Increase in FEP gain for a brief amount of time or it would heal you a little? It's extremely hard to find in the woods and should require some perception or exploration skill to find.
Just a thought.