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Taxonomic Studies of the Diplazium mettenianum Complex (Woodsiaceae; Pteridophyta) in Japan: Morphology, Cytology and Taxonomy of Plants with Normal-Shaped Spores

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Diplazium mettenianum

complex, including two polymorphic species D. mettenianum and D. griffithii, with normal-shaped spores collected from 62 sites. An analysis of 20 qualitative morphological characters showed that the complex can be divided into five forms. A statistical analysis of 16 quantitative morphological characters supported the distinctness of five forms which are regarded as independent species: D. mettenianum, D. fauriei, D. deciduum nom. nov. (=D. mettenianum var. tenuifolium), D. griffithii, and D. hayatamae sp. nov. A cytological study on 150 plants showed that D. deciduum and plants in a single population of D. fauriei are sexual hexaploids (2n=6x=246=123ll), and all others are sexual tetraploids (2n=4x=164=82ll).

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Authors and Affiliations

  1. Department of Environmental Science, Graduate School of Science and Technology, Kumamoto University, Kurokami 2–39–1, Kumamoto, 860–8555 Japan, , , , , , JP

    Noriko Ohta

  2. Department of Environmental Science, Faculty of Science, Kumamoto University, Kurokami 2–39–1, Kumamoto, 860–8555 Japan, , , , , , JP

    Masayuki Takamiya

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  1. Noriko Ohta
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  2. Masayuki Takamiya
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Received 18 May 1998/ Accepted in revised form 3 December 1998

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Ohta, N., Takamiya, M. Taxonomic Studies of the Diplazium mettenianum Complex (Woodsiaceae; Pteridophyta) in Japan: Morphology, Cytology and Taxonomy of Plants with Normal-Shaped Spores. J Plant Res 112, 67–86 (1999). https://doi.org/10.1007/PL00013860

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  • DOI: https://doi.org/10.1007/PL00013860

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