The article discusses the occurrence, distribution and phytosociological affinity of Laserpitium krapfii in Slovenia. According to some literature sources (Tutin 1968, Fischer et al. 2008) and the distribution patterns, two subspecies of L. krapfii are be expected in Slovenia: L. krapfii subsp. krapfii and L. krapfii subsp. gaudinii. The revision of the Slovene herbarium material in LJU and LJS herbaria confirmed only the occurrence of its type subspecies. It has a Dinaric pattern of distribution (NW-SE) in the Alpine, Prealpine, Dinaric and Predinaric phytogeographical regions, with most of its known localities in the hills south of Ljubljana, in the Snežnik mountains, in the Kočevje region with the Kolpa Valley and in the Gorjanci mountains. Since the species mostly thrives in the mountain beech forests, it can be considered as a diagnostic (differential) species of the Illyrian alliance Aremonio-Fagion.