Table S1 List of species including cytogenetic sampling, mean diploid chromosome number, categorical predictor variables, climate predictor variables and morphological predictor variables

Notes S1 Accession data for voucher specimens for DNA sequences used in this study.

Notes S2 Ultrametric phylogenetic tree in parenthetical format from the consensus (using maximum clade credibility tree and mean heights in TreeAnnotator v.1.61) of 9000 trees from BEAST analysis of 139 accessions of Cyperaceae.

Notes S3 Phylogenetic matrix in nexus format with 139 taxa and 2588 characters.

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