Acknowledgements
We thank colleagues and students at the FSci USB for assistance during field collecting, we thank Jakub Vlček for providing help with adapting several bioinformatic scripts. This work was supported by the Grant Agency of the Czech Republic (grant number 17-19831S to VH). Access to computing and storage facilities owned by parties and projects contributing to the National Grid Infrastructure MetaCentrum provided under the programme “Projects of Large Research, Development, and Innovations Infrastructures” (CESNET LM2015042), is greatly appreciated. We thank Joel J. Brown for his language corrections on this manuscript.