Raw data from occurrence records and experiments performed to quantify strength and species- and morph-dependent asymmetries of reproductive isolation between Primula elatior and P. vulgaris.

The excel file contains raw data of (i) number of 1x1 km grid cells from occurrence data of Switzerland that was used to estimate ecogeographic isolation (RIecogeo); (ii) number of pollen grains, diameter of pollen grains, anther and stigma positions, and anther-stigma distance from the pollen-transfer experiment that was used to estimate mechanical isolation (RImech); (iii) number of seeds, filled seeds, seedlings, and flowers, and proportion of fruits and survivors from the hand-pollination experiment that was used to estimate F1 seedling formation (RIseedling) and F1 survivorship (RIsurvivorship); (iv) number of plants and open flowers per census day, date of onset, peak, and end of flowering time, number of flowers, number of seeds and filled seeds from the common garden experiment that was used to estimate phenological isolation (RIphenoP), F1 phenology (RIphenoF1), F1 flower production (RIflower), and F1 seed set (RIseed set); and (v) number of seeds, filled seeds, and seedlings from the hand-pollination backcross experiment that was used to estimate F1 male sterility (RImale). Data for occurrence records and each experiment are presented in an individual worksheet. Names of column headings correspond with terms used in the original paper (Table 1).