2011-05-07 Burgenland, district Mattersburg (Kogelberg, 305 msm Quadrant 8264/4).German name: Europa-EdelkastanieTheir leaves are unmistakable - no other tree native to Austria has similar leaves.Here in Burgenland they are native, and while it is possible that this one has been planted it is more likely natural growth.The plant in the bottom left corner is Veratrum nigrum (and the one just left to it Primula veris, fruiting).