Data used in manuscript, \"Context-dependent concordance between physiological divergence and phenotypic selection in sister taxa with contrasting phenology and mating systems\"

PREMISE: The study of phenotypic divergence of, and selection on, functional traits in closely related taxa provides the opportunity to detect the role of natural selection in driving diversification. Where selection in field populations differs between taxa in a pattern that is consistent with the phenotypic difference between them, this provides evidence that natural selection reinforces the divergence. Few studies have sought evidence for such concordance for physiological traits.

METHODS: Herbarium specimen records were used to detect phenological differences between sister taxa independent of the effects on flowering time of long-term variation in the climate across collection sites. In the field, physiological divergence in photosynthetic rate, transpiration rate, and instantaneous water use efficiency were recorded during vegetative growth and flowering in 13 field populations of two taxon pairs of Clarkia, each comprised of a self-pollinating and a outcrossing taxon.

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