Data from: Competition for hummingbird pollination shapes flower color variation in Andean Solanaceae

Nathan Muchhala, Sönke Johnsen & Stacey Dewitt Smith
One classic explanation for the remarkable diversity of flower colors across angiosperms involves evolutionary shifts among different types of pollinators with different color preferences. However, the pollinator shift model fails to account for the many examples of color variation within clades that share the same pollination system. An alternate explanation is the competition model, which suggests that color divergence evolves in response to interspecific competition for pollinators, as a means to decrease interspecific pollinator movements....
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