this one is not white though, obviously. I don't know if that means it is a different species or just bred to be purple.
Found on the interior of the the hill side in a area that was well shaded. While there was many in the immediate area there were none once I left the crease in the hillside.
Erythronium oregonum is a species of flowering plant in the lily family which is known by the common name giant white fawn lily.