Definitely Lilium lancifolium. While the flower may superficially look like michiganense, if you had the two plants together, even a novice gardener would see they are completely different. This is L. michiganense:
While it does grow "in the wild" here, L. lancifolium is more of a persistent dweller, as a relic from a previous gardeners of 30-100 years ago. If you find it growing wild, almost assuredly there was a homestead their sometime in the past. The species does not produce seed.
