Plagiothecium talbotii, a new species from the Aleutian Islands (Alaska, U.S.A.)
- 1. University of Lodz, Lodz, Poland
- 2. Institute of Systematic Botany, The New York Botanical Garden, New York, United States of America
Description
Plagiothecium talbotii sp. 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.
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- Figure: 10.3897/phytokeys.194.81652.figure1 (DOI)
- Figure: 10.3897/phytokeys.194.81652.figure3 (DOI)
- Figure: 10.3897/phytokeys.194.81652.figure2 (DOI)