Figure S1. Primers used to PCR-amplify the trnK-matK marker.

Figure S2. The frequency distribution of carbon isotope ratios in the Molluginaceae sensu lato.

Figure S3: Detail of PEPC phylogeny.

Figure S4: Effect of removing calibration points on dating analyses.

Figure S5. Light micrographs of Molluginaceae.

Table S1. Carbon isotope ratios of accessions used in this study.

Table S2. Caryophyllales accessions and markers used in phylogenetic analyses.

Table S3. Taxa sampled for phylogenetic analyses outside Caryophyllales.

Table S4. List of ppc sequences generated in this study.

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