This is a sport of Hosta 'Golden Tiara' that I found in my garden about ten years ago. In it's second year, I carefully separated and replanted it. I have made multiple divisions and none have reverted back to the original two-tone. It is a treat to find an unusual delight in the garden. I think the contrast of the purplish flowers and glowing golden lime green is stunning.
This is my second Hosta which has produced a sport.