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Clarity in species delimitation is fundamental for successfully testing evolutionary theory and is integral to implementing conservation strategies. The Old World Spiranthes sinensis species complex Orchidaceae has been a source of systematic confusion due to its expansive distribution and morphological variation, lacking a comprehensive systematic review.
Working under an integrative phylogenetic species concept, we provide an expansive molecular phylogenetic sampling of the S. Our data support a re-circumscription of the S. The recognition of S. Our research indicates phenological divergence, reinforced by glacial vicariance, may have strongly influenced the evolution and speciation of this clade, with few observable or measurably significant morphological differences among these species other than pubescence.
We also discuss the importance and prevalence of autogamy among island populations of Spiranthes. Our work can be used by researchers working on the systematics and biogeography of other Asian and Australasian species complexes, and we underscore the continued importance of nomenclatural and specimen review and correct species identification in evolutionary and ethnobotanical studies.
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Sign In or Create an Account. Sign In. Advanced Search. Article Navigation. Close mobile search navigation Article Navigation. Volume Illuminating the systematics of the Spiranthes sinensis species complex Orchidaceae : ecological speciation with little morphological differentiation Matthew C Pace.