I am pretty sure this is Late Horse Gentian, since all of the leaves were perfoliate. Or as S&W says 'middle leaves pandurate, narrowed below the middle, dialated and clasping-connate at the base.' The fruits were very attractive, with their color and geometric arrangement around the stem. I found these in an open woodland in Henry County, Indiana. Triosteum is an herbaceous member of the Honeysuckle (Caprifoliaceae) family.