Fig. S1 Maximum likelihood phylogeny for the 107 angiosperm species used in the analysis, based on rbcL sequence data.

Table S1 Species used in the analysis, their pollen to ovule (P : O) ratios, outcrossing rates (t), pollination syndrome (anemophily, a; biotic pollination, b), life form, rbcL data used for phylogenetic correction (*, original sequence data of the species available) and GenBank accession numbers

Table S2 Reference list for P : O ratios and outcrossing rates (t)

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