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

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...

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Main Authors: Grzegorz J. Wolski, Jarosław Proćków
Format: Article
Language:English
Published: Pensoft Publishers 2020-10-01
Series:PhytoKeys
Online Access:https://phytokeys.pensoft.net/article/56612/download/pdf/
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author Grzegorz J. Wolski
Jarosław Proćków
author_facet Grzegorz J. Wolski
Jarosław Proćków
author_sort Grzegorz J. Wolski
collection DOAJ
description 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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spelling doaj.art-4be46bdef2e348b19a49fff24749858e2022-12-21T21:20:51ZengPensoft PublishersPhytoKeys1314-20032020-10-01164213110.3897/phytokeys.164.5661256612A new synonym from Hawaii and lectotypification of Plagiothecium longisetum (Plagiotheciaceae)Grzegorz J. Wolski0Jarosław Proćków1University of LodzWrocław University of Environmental and Life SciencesPlagiothecium 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.https://phytokeys.pensoft.net/article/56612/download/pdf/
spellingShingle Grzegorz J. Wolski
Jarosław Proćków
A new synonym from Hawaii and lectotypification of Plagiothecium longisetum (Plagiotheciaceae)
PhytoKeys
title A new synonym from Hawaii and lectotypification of Plagiothecium longisetum (Plagiotheciaceae)
title_full A new synonym from Hawaii and lectotypification of Plagiothecium longisetum (Plagiotheciaceae)
title_fullStr A new synonym from Hawaii and lectotypification of Plagiothecium longisetum (Plagiotheciaceae)
title_full_unstemmed A new synonym from Hawaii and lectotypification of Plagiothecium longisetum (Plagiotheciaceae)
title_short A new synonym from Hawaii and lectotypification of Plagiothecium longisetum (Plagiotheciaceae)
title_sort new synonym from hawaii and lectotypification of plagiothecium longisetum plagiotheciaceae
url https://phytokeys.pensoft.net/article/56612/download/pdf/
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AT grzegorzjwolski newsynonymfromhawaiiandlectotypificationofplagiotheciumlongisetumplagiotheciaceae
AT jarosławprockow newsynonymfromhawaiiandlectotypificationofplagiotheciumlongisetumplagiotheciaceae