We are grateful to Marina M.Maslennikova and Viktor I.Yegorov for help with working on a FEI Company Quanta 200 scanning electron microscope(The Shared Research Facilities for Physical and Chemical Ultramicroanalysis,Limnological Institute SB RAS,Irkutsk).We wish to thank Sergey G.Kazanovsky(Herbarium of Siberian Institute of Plant Physiology and Biochemistry SB RAS)and collaborators of the Greenhouse of SIPPB SB RAS(Irkutsk,Russia).Sincere thanks are due to Nina S.Probatova(Federal Center for Biological Diversity of Terrestrial Biota of East Asia,Far Eastern Branch of the Russian Academy of Sciences,Vladivostok,Russia)and Violetta V.Kotseruba(Botanical Institute of the Russian Academy of Sciences,St.Petersburg,Russia)for some living and herbarium material of monocotyledonous plants for the preparation of epidermal microslides.Special thanks are extended to Josh Jenkins Shaw(Beijing,China)for correction of the English text of the manuscript.This work was carried out in the framework of the state task topic of the Institute of the Earth's Crust,Siberian Branch of the Russian Academy of Sciences(Project No.0346-2018-0004).This work involved the Centre of Geodynamics and Geochronology equipment at the Institute of the Earth's Crust,Siberian Branch of the Russian Academy of Sciences(Grant No.075-15-2021-682). （The Shared Research Facilities for Physical and Chemical Ultramicroanalysis,Limnological Institute SB RAS,Irkutsk）