A new synonym from Hawaii and lectotypification of Plagiothecium longisetum (Plagiotheciaceae)
Grzegorz J. Wolski , Jarosław Proćków
AbstractPlagiothecium 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.
|Journal series||PhytoKeys, ISSN 1314-2011, e-ISSN 1314-2003, (N/A 100 pkt)|
|Publication size in sheets||0.5|
|Keywords in English||Codes of Botanical Nomenclature, Orthophyllum section, Plagiothecium, Plagiothecium mauiense, Plagiothecium nemorale, typification|
|License||Journal (articles only); author's original; ; with publication|
|Score||= 100.0, 22-02-2021, ArticleFromJournal|
|Publication indicators||= 0; : 2017 = 1.13; : 2019 = 1.225 (2) - 2019=1.222 (5)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.