Data from: A first look at diversification of Beaksedges (tribe Rhynchosporeae: Cyperaceae) in habitat, pollination, and photosynthetic features

Tribe Rhynchosporeae (ca. 386 spp.; Cyperaceae) has high levels of endemicity (? 44%) in tropical and subtropical American savannas and can provide insights into the diversification of their biotas. Wind pollination, occupation of a savanna habitat, and a C3 photosynthetic pathway are common in the tribe, but showy (presumably insect-pollinated) inflorescences, occupation of forest habitat, and a C4 pathway also occur. We reconstructed a dated phylogenetic hypothesis for 79 taxa, inferring a mean crown-group age of 56 million years. Fitch parsimony infers the most recent common ancestor to have occupied a savanna habitat with eight or more shifts to forest. Features associated with insect pollination-white bracts and spikelets-were shown to evolve six or more times but werenot correlated with the shifts to forest habitat. We found evolutionary correlations in the pairwise comparisons of bract color versus spikelet color and bract positioning versus bract color. Members with anatomies associatedwith C4, photosynthesis though anatomically variable, form a clade with a crown age of 19 million years.1 Aligned trnL-F sequences used in this study—before using gblocks.1) Aligned trnL-F sequences used in this study—before and after using gblocks. Alignment of Rhynchospora, and Pleurostachys species plus some outgroups in Cyperaceae1 Buddenhagen et al Rhynchospora original alignment.nex1 Buddenhagen et al Rhynchospora alignment gblocked1) Aligned trnL-F sequences used in this study—after using gblocks. Alignment of Rhynchospora, and Pleurostachys species plus some outgroups in Cyperaceae Conserved regions of an alignment of Rhynchospora and Pleurostachys and some outgroups in Cyperaceae2 Character Coding Regions C4 habitat inflorescence2) Character state coding used in ancestral state reconstructions; explanation for codes provided at bottom of text file. This file contains the character coding for Regions, habitat, C4 photosynthetic pathway and inflorescence type.3 Buddenhagen et al Rhynchospora chronogram3) BEAST chronogram with node heights equal to the mean and support values indicated by posteriors and 95% credible intervals provided (graphical depiction)4 Buddenhagen et al Rhynchospora chronogram4) BEAST chronogram with support values indicated by posteriors and 95% credible intervals provided in nexus format