Tulipa sylvestris probably came to Norway in 18th century as ballast plants, and it is established in many parts of Norway today, both in gardens and in the wild, especially in the south. The ships transported timber to the rest of Europe, and when they returned, the goods they brought back was usually not heavy enough, and they need to fill the ships with ballast, usually soil, sand and gravel. A lot of plants were imported that way, not all of them as nice as the tulips.
I still think T. orphanidea is much nicer, though, and I am still looking for a source.