Diachea racemosa (Myxomycetes = Myxogastrea): a new species with cespitose sporocarps from southern Vietnam and its position within the phylogenetic clade Diachea sensu lato (Physarales)

Novozhilov, Y.K.; Prikhodko, I.S.; Bortnikov, F.M.; Shchepin, O.N.; Luptakova, A.D.; Dobriakova, K.D.; Thi Ha, G.P.

Авторы: Novozhilov Yu K., Prikhodko I.S., Bortnikov F.M., Shchepin O.N., Luptakova A.D., Dobriakova K.D., Thi Ha Giang Pham
Журнал: Protistology
Том: 17
Номер: 4
Год издания: 2023
Издательство: Protozoological Society affiliated with RAS, Institute of Cytology RAS, Penza State University
Местоположение издательства: Russia
Первая страница: 189
Последняя страница: 204
DOI: 10.21685/1680-0826-2023-17-4-1
Аннотация: A new species of dark-spored myxomycetes is described from specimens collectedin Bidoup Nui Ba National Park (Dalat Plateau, southern Vietnam) on cushionsof mosses covering coarse wood debris of Quercus sp. and a log of an indeterminatedeciduous tree. Relevant details of morphological characters of the new taxon areprovided: shortly ovoid or cylindrical sporocarps assembled in clusters of 0.3–1cm in diameter and hanging on white or light cream-rose membranous strandsof hypothallus; columella membranous and flexuous, pale at the base and darkin the upper part; limeless brown threads of capillitium, spreading from all partsof the columella, slender at the tips; thin membranous silver-metallic iridescentperidium without visible inclusions of lime; free ellipsoid or slightly polygonallarge spores covered with rough warts merging into short crests and clusters.Phylogeny reconstruction based on partial sequences of three unlinked genesshows that a new species forms a monophyletic clade with Diachea cylindrica(sensu Lado et al., 2022) and occupies position within the clade Diachea sensulato. The genus-level taxonomical classification of some members of this clade iscurrently uncertain. In this context, the morphology and phylogenetic positionof Paradiachea cylindrica and Badhamia lilacina based on specimens collectedin the Russian Far East and the European part of Russia correspondingly arediscussed. Decisions that can be made for the taxonomic revision of the generaDiachea, Paradiachea and Scyphium are summarized.
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Diachea racemosa (Myxomycetes = Myxogastrea): a new species with cespitose sporocarps from southern Vietnam and its position within the phylogenetic clade Diachea sensu lato (Physarales)статья

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