Bitter Root

I am looking for dried Bitter root. Does anyone know of a source where I can purchase some for my own use?

Can you describe what the root looks like? I am sorry, but I don't know all the roots and herbs in different states. I kinda thought it might have another name. Lots of bitter tasting roots in the woods.

It has several names, it's also the Montana state flower. Maybe this link will help, I'm not very familiar with its other names.
http://www.wisegeek.com/what-is-a-bitterroot.htm

Don, it's also known as Lewisia Rediviva. Any help is appreciated.

Doubt I can do you much good as I have never seen a price list that had that name on the list. I will keep looking and see if i can find anything about it.

Thank you sir!