Data from: Convergent evolution of floral shape tied to pollinator shifts in Iochrominae (Solanaceae)

Flower form is one of many floral features thought to be shaped by
pollinator-mediated selection. Although the drivers of variation in flower
shape have often been examined in microevolutionary studies, relatively
few have tested the relationship between shape evolution and shifts in
pollination system across clades. In the present study, we use
morphometric approaches to quantify shape variation across the Andean
clade Iochrominae and estimate the relationship between changes in shape
and shifts in pollination system using phylogenetic comparative methods.
We infer multiple shifts from an ancestral state of narrow, tubular
flowers toward open, bowl-shaped or campanulate flowers as well as one
reversal to the tubular form. These transitions in flower shape are
significantly correlated with changes in pollination system. Specifically,
tubular forms tend to be hummingbird-pollinated and the open forms tend to
be insect-pollinated, a pattern consistent with experimental work as well
as classical floral syndromes. Nonetheless, our study provides one of the
few empirical demonstrations of the relationship between flower shape and
pollination system at a macroevolutionary scale.