The True Queen's Root

The Queen Elizabeth Root used in hoodoo is usually nowadays an orris root. In older hoodoo it was taken from a plant called stillingia, or Queen's Root. I cannot find the exact point at which the new name was acquired, but it appears that the name "Queen Elizabeth" came to use coincidental with the time that it was being replaced in curio catalogues with orris root. In this instance, it was probably to evade accusations of fraud or mislabeling for selling queen's root from a different plant. 

A similar thing happened with John the Conqueror root, where the easier to acquire jalap replaced the more traditional root, usually identified as either Solomon's Seal root or a Jack in the Pulpit root.