The aim of this paper is to present one of the pioneers of Polish microbiology, Seweryn Józef Krzemieniewski, as a scholar with humanistic and interdisciplinary interests. His work covered primarily the history of botany and was an important contribution to the development of this discipline in the interwar period in Poland. Krzemieniewski is the author of works analyzing the research of Michał Boym, a missionary in China–, as well as of an article presenting the history of botany in Lviv. He also prepared biographies of Polish botanists, but not all of them were published. Additionally, the scientist was involved for several years in intensive work in nature conservation, which makes it possible to include him in the group of leading activists in this field in Poland of that period.
Krzemieniewski’s belief in the fundamental importance of education for the development of conscious and environmentally sensitive society seems to be at the root of his humanistic activities, which is clearly visible in his published works. This idea is also reflected in his activities as a popularizer of natural science and a lecturer.
