Two new for Russia Arrhenia species collected in the Altay Republic, Western Siberia, Russia

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Abstract

The article provides information on two new species for Russia, Arrhenia leucotricha and A. subglobisemen, collected in the territory of the Altai Republic. The macro- and micromorphological characteristics of both species were described in detail, and their ITS nrDNA sequences were acquired and analysed. The data on the substrate specificity, ecological preferences in the southern part of Western Siberia, and their geographical distribution in the Holarctic region are discussed.

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About the authors

I. A. Gorbunova

Central Siberian Botanical Garden of the Siberian Branch of the Russian Academy of Sciences

Author for correspondence.
Email: fungi2304@gmail.com
Russian Federation, Novosibirsk, 630090

N. V. Filippova

Yugra State University

Email: filippova.courlee.nina@gmail.com
Russian Federation, Khanty-Mansiysk, 628012

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2. Fig. 1. Basidiomata and micromorphological structures of studied specimens: A – Arrhenia leucotricha [in the right inset – basidiomata (bar – 1 cm), on the left inset – spores and basidia (bar – 10 µm]; B – A. subglobisemen [in the right inset – basidiomata (bar – 1 cm), in the left inset – spores and basidia (bar – 10 µm)].

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3. Fig. 2. ML best tree of selected ITS sequences of Arrhenia acerosa complex reconstructed based on the ITS sequence dataset, obtained by analysis in IQTREE1.6.12. The newly generated sequences are highlighted in bold font, and bootstrap percentage is provided above the branches.

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