Data from: A geographic cline in the ability to self-fertilize is unrelated to the pollination environment

Laura Galloway, Matt Koski, Jeremiah Busch & Dena Grossenbacher
The reproductive assurance (RA) hypothesis predicts that the ability to autonomously self-fertilize should be favored in environments where a lack of mates or pollinators limits outcross reproduction. Because such limits to outcrossing are predicted to be most severe at range edges, elevated autonomy in peripheral populations is often attributed to RA. We test this hypothesis in 24 populations spanning the range of Campanula americana, including sampling at the range interior and three geographic range edges....
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