Boechera_experiment_flowering_success.txt contains family-level flowering success data for the Boechera stricta experiment (Tables S11a-S11c) for control and snow removal treatments for both cohorts of experimental plants. In the main text, we analyzed the two cohorts separately. Column headings: growing_season: The growing season in which phenology was measured. source_population: The unique identifier for each source population of the maternal families in the experiment. maternal_family: Identity of the maternal family (=genotype) planted. tource_elevation: The elevation of origin (m) for each maternal family. treatment: The experimental treatment (control vs. snow removal). c is control and r is snow removal. planted: Number of individuals planted per family and cohort. flowered: Number of individuals per family that flowered successfully in each growing season and cohort. cohort: The experimental cohort. We planted one cohort in the fall of 2013 and the second in the fall of 2014. Please contact Jill Anderson (jta24@uga.edu) with any questions