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On resurrection of Marsupella parvitexta Steph. (Gymnomitriaceae, Marchantiophyta) as a semi cryptic species of the genus Gymnomitrion

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Comparative morphological study supports the resurrection of Marsupella parvitexta Steph. as Gymnomitrion parvitextum (Steph.) Mamontov, Konstant. et Potemkin comb. nov. The species is recorded for the first time from Russia on the basis of collections from Primorye Territory, Russian Far East. The study shows that shape and distribution of papillae on leaf surfaces are important characters for the differentiation between G. parvitextum and G. verrucosum. Study of the holotypes of G. verrucosum and G. parvitextum has shown that the specimen recently reported as G. verrucosum from Japan is in fact G. parvitextum. Molecular phylogenetic study confirms the separation of M. parvitexta and its transfer to the genus Gymnomitrion. A key for the differentiation between G. parvitextum, G. commutatum and G. verrucosum is provided, and their distinguishing characters are discussed. Detailed morphological descriptions of G. parvitextum, SEM and LM photomicrographs and original drawings are presented for the first time.
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Keywords: EAST ASIA; GYMNOMITRION; LIVERWORTS; MARSUPELLA PARVITEXTA; RESURRECTION

Document Type: Research Article

Publication date: February 1, 2018

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  • Nova Hedwigia is an international journal publishing original, peer-reviewed papers on current issues of taxonomy, morphology, ultrastructure and ecology of all groups of cryptogamic plants, including cyanophytes/cyanobacteria and fungi. The half-tone plates in Nova Hedwigia are known for their high quality, which makes them especially suitable for the reproduction of photomicrographs and scanning and transmission electron micrographs.
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