From distyly to stigma-height dimorphism: phylogenetic insights into the evolutionary breakdown of distyly in Jasminum

Background and Aims Distylous polymorphisms (distyly) are adaptations for plants to improve efficiency of cross-pollination and reduce pollen wastage. Theoretical models suggest that distyly evolves from stylar monomorphism via an intermediate stage of stigma-height dimorphism (SHD), however, this evolutionary scenario is only observed in few distylous lineages. The genus Jasminum have many…

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