Contribution to the Knowledge of Fungi of the Kampinos National Park (Central Poland): Part 6 – With Particular Emphasis on the Species Occurring on Windthrown Areas

We identified 17 species of fungi that are new to Kampinos National Park. Sixteen were found during surveys of areas damaged by a strong wind in 2017. e remaining species was found outside the windthrow area. Descriptions of four species new to Poland ( Cortinarius subcompar , Hyaloscypha quercicola , Hypocrea tremelloides , and Trechispora aﬀ. invisitata ) are also provided. e current number of macromycetes taxa identified in Kampinos National Park is 1,654.


Introduction
Kampinos National Park (KNP) is located in central Poland, west of Warsaw.e current number of macromycetes taxa identified in KNP is 1,637 (1,413 Basidiomycota and 224 Ascomycota) (Szczepkowski et al., 2022).KPN is one of the most mycologically explored areas in Poland.However, each year, new species of fungi have been reported for KPN (e.g., Gierczyk, Szczepkowski, et al., 2019;Marciszewska et al., 2020;Szczepkowski et al., 2021).Aer the forest was wind-damaged in the western part of KNP (summer 2017), a 4-year project surveying fungi on windthrown trees was undertaken (2018)(2019)(2020)(2021).e survey has revealed many interesting findings concerning taxa of all lignicolous fungi and has identified new species of non-lignicolous fungi in KPN (Szczepkowski et al., 2021(Szczepkowski et al., , 2022;;Zaniewski et al., 2019).is paper presents newly identified species of fungi in windthrow areas of KNP during the final year of the project (2021) and provides condensed information on their distribution in Poland.Additionally, one interesting fungal species, new to KNP, which was found outside the windthrow area, is included.

Material and Methods
e study involved two plots located in the Rózin and Grabina protective subdistricts/forest subdistricts (in Kampinos Protective District/Forest District).

Results -List of the Species
In 2021, 16 species of fungi new to Kampinos National Park were found in wind-damaged areas affected by a strong wind in 2017.e remaining species of fungus was novel to KNP and was found outside the windthrow area.

Conclusions
During the course of the study on the windthrow area of KNP, 222 taxa were collected (identified to the level of species, forms, varieties, and, in a few cases, genera).Field research in KNP in 2021 yielded interesting mycological findings.Seventeen taxa new to KNP were noted comprising five ascomycetes and 12 basidiomycetes.One species (Buchwaldoboletus lignicola) was found in a strictly protected area in Granica.Sixteen species were found during studies of areas damaged by the gale in 2017.Some recorded fungi (for example Hypocrea auranteffusa, Mollisia cfr.olivaceocinerea, and Ramaria fennica var.fumigata) are rare in Poland, having hitherto been mentioned in single localities.Four species (Cortinarius subcompar, Hyaloscypha quercicola, Hypocrea tremelloides, and Trechispora aff.invisitata) have not been reported previously in Poland.e current number of macromycete taxa identified in KNP is 1,654 (1,425 Basidiomycota and 229 Ascomycota).Detailed results and analyses of the succession of fungal biota in wind-damaged areas will be presented in a separate publication.

Figure 2
Figure 2 Stromata (young in le panel, mature in right panel) of Hypocrea tremelloides from Kampinos National Park; October 9, 2021.Photography by A. Kujawa.