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      A new synonym from Hawaii and lectotypification of Plagiothecium longisetum (Plagiotheciaceae)

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          Abstract

          Plagiothecium mauiense was first described in 1927 by V.F. Brotherus, based on materials from Hawaii. It has, so far been, treated as a separate species. A detailed analysis of the original material housed in the New York Botanical Garden Herbarium (NY01256708) found the specimen to be characterised by a lack of metallic lustre; concave, asymmetrical, lanceolate to lanceolate-ovate leaves, shrunken in their dry condition; a straight, not denticulate, acute to apiculate apex; elongate-hexagonal cells in irregular transverse rows, 101–131 × 15–21 µm at mid-leaf; very lax areolation, with decurrencies composed of three rows of cells. These characteristics indicate that this species is identical to the original material of P. longisetum (e.g. H-SOL 1563 011; PC0132572). Hence, we propose that P. mauiense should be recognised as a new synonym of P. longisetum . In addition, a review of P. longisetum syntypes found one (H-SOL 1563 011) to have the same date of collection as the protologue, and to possess a quite abundant gametophyte turf with well-preserved sporophytes, indicating it to be fertile. Considering the above, we propose that specimen H-SOL 1563 011 be designated the lectotype of P. longisetum .

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          Most cited references 17

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          International Code of Nomenclature for algae, fungi, and plants

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            A Revision of Plagiothecium and Its Related Genera from Japan and Her Adjacent Areas

             Z Iwatsuki (1970)
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              Morphological and anatomical variability of Plagiothecium nemorale in Central Poland.

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                Author and article information

                Contributors
                Journal
                PhytoKeys
                PhytoKeys
                3
                urn:lsid:arphahub.com:pub:F7FCE910-8E78-573F-9C77-7788555F8AAD
                PhytoKeys
                Pensoft Publishers
                1314-2011
                1314-2003
                2020
                21 October 2020
                : 164
                : 21-31
                Affiliations
                [1 ] Department of Geobotany and Plant Ecology, Faculty of Biology and Environmental Protection, University of Lodz, ul. Banacha 12/16, 90-237 Lodz, Poland University of Lodz Lodz Poland
                [2 ] Department of Plant Biology, Institute of Biology, Faculty of Biology and Animal Science, Wrocław University of Environmental and Life Sciences, ul. Kożuchowska 7a, 51-631 Wrocław, Poland Wrocław University of Environmental and Life Sciences Wrocław Poland
                Author notes
                Corresponding author: Grzegorz J. Wolski ( grzegorz.wolski@ 123456biol.uni.lodz.pl )

                Academic editor: Matt Renner

                Article
                56612
                10.3897/phytokeys.164.56612
                7593317
                Grzegorz J. Wolski, Jarosław Proćków

                This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

                Categories
                Research Article
                Plagiotheciaceae
                Taxonomy
                World

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