It is known in Latin as Lilium superbum. The wildflower merits the name, though this single specimen and quick grab shot do not.
But here is another instance in which, had the dog not momentarily disappeared into the deep forest, we would not have had a reason to venture to its edge and find a single surviving plant of the dozens growing there before the deer found them.
I was hiking with a wildlife professional once who measured deer populations indirectly by the number of surviving Turk’s Cap lilies. They must be a delicacy for those herbivores. I appreciate them leaving me a sample to remember how magnificent an entire meadow of them would have been.