Another rogue plant

Or a gift from God, as you care to think of it. Recently, I was bemoaning the fact that tulips don't stay with me for long, particularly the lovely ones with green markings. Today I spotted this beauty emerging from an overgrown patch of senecio on the bank. I never planted it or anything like it there. The new clematis I decided must have come from next door but this tulip...hmm, considering what I have planted in the past it would have to be a very strange mutation.