Plagiothecium talbotii, a new species from the Aleutian Islands (Alaska, U.S.A.)

By

Wolski, Grzegorz J.
Nowicka-Krawczyk, Paulina
Buck, William Russel 1950-

Type

Article

Date of Publication

2022-4-15

Original Publication

PhytoKeys

Volume

194

Pages

63--73

Subjects

Attu Island , Bryophyta , Plagiotheciaceae , S. S. Talbot , taxonomy

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers [2010]-

Identifiers

DOI: https://doi.org/10.3897/phytokeys.194.81652

 

Abstract

Plagiothecium talbotiisp. nov. is described from Attu Island, Alaska, U.S.A. The newly-described species is not similar in appearance to any Northern Hemisphere species; only the habit is similar to P. platyphyllum. However, it not only occupies a different habitat than that species, but genetically and morphologically, it is clearly distinct from it. The results of DNA sequencing, a detailed description of the morphological features, illustrations, ecological preferences and currently known geographical distribution of P. talbotii are presented. The most important distinguishing morphological features of this species are: the size of the plant; dimensions and symmetry of the leaves; dimensions of cells and their areolation; entire leaf apex; and long decurrencies with some inflated cells. Additionally, we propose to place P. talbotii in section Plagiothecium, which is confirmed by genetic analysis and morphological features.