Reappraisal ofDiplolabellum coreanum (orchidaceae) as inferred from molecular data |
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| Authors: | Sang Mi Eum Tomohisa Yukawa Yibo Luo John V Freudenstein Nam Sook Lee |
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| Institution: | (1) Division of Eco Science, Ewha Womans University, 120-750 Seoul, Korea;(2) Tsukuba Botanical Garden, National Science Museum, 305-0005 Amakubo, Tsukuba, Japan;(3) Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, 100093 Beijing, China;(4) Department of Evolution, Ecology and Organismal Biology, Ohio State University Herbarium, 43212 Columbus, Ohio, USA |
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| Abstract: | The taxonomic treatment of a monotypic genus,Diplolabellum, has been disputed by various authors. Maekawa (1935) described the genus on the basis ofOreorchis coreana IFinet. Because distribution of its plants is very limited, i.e., to Jeju Island of the South Korean Peninsula, it has not
been well studied. To reappraise the phylogenetic relationship ofDiplolabellum coreanum Finet, we obtained ITS,matK, trnT-trnL, andtrnL-trnF sequences from several species ofOreorchis and related genera. Sequence analysis showed thatD. coreanum is closely related to one group ofOreorchis that consists ofO. patens Lindle andO. fargesii Finet. Therefore, our molecular data support treating the species asO. coreana rather than asD. coreanum, even though the latter genus is distinct fromOreorchis in morphological characters such as callus, pedicel, column, and caudicle. |
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| Keywords: | Diplolabellum coreanum ITS matK phylogenetic relationship trnL-trnF trnT-trnL |
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