EN
Birthday anniversaries of excellent mycologists professor Maria Lisiewska (born 2 January 1934) and professor Anna Bujakiewicz (born 1 February 1940) are an occasion for dedicating them the jubilee issue of Acta Mycologica. Both ladies are known as authors of remarkable papers on mycocoenology, chorology and taxonomy of fungi. Specially appreciated is their educational activity in the form of courses and seminars opened for people from the whole country. The entity of their work resulted with the creation of Poznań Mycocoenological School and was important for integration of Polish mycologists, which later contributed to establishing the Polish Mycological Society.