Data for: Variation in the role of the flag leaf in the reproductive effort of semi-arid rangeland bunchgrasses

This is the complete data set used in the manuscript titled "Variation in the role of the flag leaf in the reproductive effort of semi-arid rangeland bunchgrasses". It includes the responses of total propagule production, percentage of filled and unfilled seeds, and filled seed-specific mass in response to seed head shading and flag leaf removal in two semi-arid perennial bunchgrasses, crested wheatgrass (Agropyron cristatum) and squirreltail wild rye (Elymus elemoides). Seasonal volumetric soil moisture data is also provided.