In 2024, a floristic survey of the Baikalsky Biosphere Reserve, its buffer zone and the adjacent section of the Baikal coast was carried out, as well as a revision of previously collected herbarium specimens. Field routes were laid out taking into account the degree of previous study, with special attention given to rarely visited areas that had not yet been sufficiently studied. The outcome of this floristic survey and herbarium revision was identification of 31 plant species new to the Reserve and its buffer zone, exclusion of 14 misidentified plant species, and updating of three plant species names.