Botanica Pacifica

Taxonomic novelties

Botanica Pacifica. A journal of plant science and conservation 2023. 12(2):81-119
Article first published online: 06 JUL 2023 | DOI: 10.17581/bp.2023.12s03

Additions to Trichia botrytis complex (Myxomycetes): 9 new species

Fedor M. Bortnikov1 ORCID, Nadezhda A. Bortnikova2 ORCID, Vladimir I. Gmoshinskiy1 ORCID, Ilya S. Prikhodko2 ORCID & Yuri K. Novozhilov2 ORCID

1 M.V. Lomonosov Moscow State University, Faculty of Biology, Mycology and Algology Dept., Moscow, Russia
2 V.L. Komarov Botanical Institute RAS, Saint Petersburg, Russia

A taxonomic revision of the Trichia botrytis species complex based on the study of specimens from the LE and MYX fungaria was made. Six of 7 previously described species of the complex (except for T. subfusca) and 10 taxa new to science (9 species and 1 variety) were recognized. Each studied morphotype, including the previously known ones, is described in detail and illustrated with LM and SEM photographs. In addition, nrSSU, mtSSU, and EF1α genes sequences are given for all 16 morphotypes. The variability of different features (including fruiting body morphology and species ecology) is discussed thoroughly, as well as their taxonomic significance and applicability in practice. A set of features that are highly recommended to be used in subsequent descriptions of new Trichia species and closely related genera is proposed and some methodological recommendations for morphological analysis are given.

Бортников Ф.М., Бортникова Н.А., Гмошинский В.И., Приходько И.С., Новожилов Ю.К. Расширение комплекса Trichia botrytis (Myxomycetes): 9 новых видов. На основании исследования образцов из фунгариев LE и MYX проведена таксономическая ревизия комплекса T. botrytis. Рассмотрены 6 из 7 ранее описанных видов (за исключением T. subfusca) и описано 10 новых таксонов (9 видов и 1 разновидность). Каждый исследованный морфотип, включая ранее известные, детально описан и проиллюстрирован микрофотографиями, полученными с помощью светового и сканирующего электронного микроскопов. Кроме того, приводятся частичные последовательности генов nrSSU, mtSSU и EF1α для всех 16 морфотипов. Обсуждается вариабельность различных признаков (включая морфологию и экологию) и их таксономическая значимость и применимость на практике. Предлагается набор признаков, который настоятельно рекомендуется использовать в последующих описаниях новых видов Trichia и близких родов, а также даются некоторые методические рекомендации по морфологическому анализу.

Keywords: Myxomycetes, Trichiales, multigene phylogeny, SEM, species complex, taxonomic revision, видовой комплекс, мультигенная филогения, СЭМ, таксономическая ревизия

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