I found a yellow flowered plant in one of our pastures that I cannot identify even after searching through every wildflower book and website I can find. It was located in what would be a dry tallgrass prairie type area. It was about 2 feet tall with a single tall stalk with leaves alternating up the stalk along with yellow flowers. The flowers were not daisy like, pea like or compound. They were almost tulip-like with frilly yellow stamens sticking out the top. And the sepals were sticking backwards away from the flower like a star. It is so hard to explain! I've posted pictures on my website in the hopes that someone can enlighten me. This is my first link so hopefully it works.

photo at bottom of page