A temperature-based climate map of the study area and its localization in Austria. The map shows the mean annual air temperature for the period 1971 – 2000 with linearized color interpolation and is based on the data of Hiebl et al. (2011). The white circles indicate the collection localities. The mean annual air temperature of these localities, based on the years 1971 – 2000, range from -0.7 to 3.7 °C.