Pteridophyte distribution of the Urals and adjacent areas: a dataset oleh Denis Melnikov, Alyona Tretyakova, Nickolay Grudanov, Olga Baranova, Stepan Senator, Albert Muldashev, Elena Podgaevskaya, Natalya Zolotareva, Nickolay Erokhin, Alex Vorobiev, Mikhail Knyazev, Valerii Glazunov, Olga Kapitonova, Venera Allayarova, Nikolay Naumenko, Elena Efimik, Sergey Malykh, Vera Merker, Yulia Morozyuk, Daria Burundukova, Dmitriy Shubin, Denis Shilov