Mycology and PhytopathologyMycology and PhytopathologyМикология и фитопатология0026-36483034-5421The Russian Academy of Sciences69623810.31857/S0026364825060104SHORT COMMUNICATIONSКРАТКИЕ СООБЩЕНИЯResearch ArticleFirst Record of COMATRICHA MEANDRISPORA (MYXOMYCETES) in RussiaПЕРВАЯ НАХОДКА COMATRICHA MEANDRISPORA (MYXOMYCETES) В РОССИИSakulinS. V.СакулинС. В.sakulin.1999@mail.ruGmoshinskiyV. I.ГмошинскийВ. И.rubisco@list.ruKireevaN. I.КирееваН. И.espoir87@mail.ruP. G. Demidov Yaroslavl State UniversityЯрославский государственный университет им. П. Г. ДемидоваLomonosov Moscow State UniversityМосковский государственный университет им. М. В. ЛомоносоваIndependent ResearcherНезависимый исследователь15112025596VOL 59, NO6 (2025)ТОМ 59, №6 (2025)54855213112025Copyright ©; 2025, Russian Academy of SciencesCopyright ©; 2025, Российская академия наук2025Russian Academy of SciencesРоссийская академия наукhttps://oncopathology.abvpress.ru/0026-3648/article/view/696238

The first record of Comatricha meandrispora in Russia made in the Yaroslavl Region (National Park “Lake Pleshcheyevo” ) is presented. We describe the morphology of its sporocarps using light and scanning electron microscopy. The main diagnostic morphological characters of C. meandrispora are cylindrical light-brown sporangia up to 1.8 mm tall, small spores (5–6 µm) ornamented by low, thin, dark bands or strongly broken reticulation, with a few scattered, complete small meshes which form a characteristic irregular open labyrinth (distinct under SEM). Comparison with related species from genera Comatricha and Stemonitopsis, data on distribution in other countries, iconography, and information on ecology are given.

Сообщается о первой находке Comatricha meandrispora в России на территории Ярославской обл. (национальный парк “Плещеево озеро”). Представлено описание морфологии спороношений с использованием световой и сканирующей электронной микроскопии. Основными диагностическими морфологическими признаками C. meandrispora являются цилиндрические спорангии светло-коричневого цвета до 1.8 мм выс., небольшие споры (5–6 мкм), орнаментированные гребневидными утолщениями, формирующими одно-два темных звездчатых скопления на видимую часть споры. Приводится сравнение C. meandrispora с близкими видами родов Comatricha и Stemonitopsis, данные о распространении вида в других странах, иконография, а также сведения об экологии.

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