Tanacetum parthenium
From:http://www.stevenfoster.com/education/monograph/feverfew.html

"The famous (or infamous) English herbalist, Nicholas Culpepper, whose seventeenth
century "English Physician" is the most widely printed English-language herbal of all
time, also observed use of feverfew for headache. My 1787 Dublin edition of Culpepper
says, "It is very effectual for all pains in the head coming of a cold cause, the herb being
bruised and applied to the crown of the head; as also for the Vertigo, that is a sunning
or swimming of the head".

I think you have to be pretty gullible to believe that crushing it and plastering in on your head
will do any good.

Another example of blue sky idiotic acceptance of worthless claims.