I had never seen this flower around here before this year and was surprised to find that it was goldenseal - one of the most popular herbal medicines around.
The Latin is Hydrastis canadensis and its other common names include orangeroot and yellow puccoon. It forms colonies at the edge of the woods.
The medicinal claims range from its effectiveness at reducing bacteria in the gut, to being used as a treatment for cancer. One of the active constituents is berberine, which can have unfortunate effects when used with other medications.
If you use goldenseal, make sure you do your research to know if it will interact badly with other medications and make sure to tell your doctor when you get any prescriptions.
