This one took a while because there's very little information on them. The Central European subspecies is heavily hybridized up to a point I might as well not have included them.
There was a lot of different subspecies listed by different sources (between 10 to 21 depending on where you look). So I just ended up using a mixture of wikipedia's list for the basics, then using other sources until I was able to fill in the full map.
So in all honesty I have no idea how valid they are
