https://unilib.phaidrabg.rs/o:10110 doi:10.46793/BiolNyss.17.1.21D application/pdf 510398 bytes Abstract: Herbarium collections are important sources of verifiable data for floristic research and conservation of endangered plant taxa. We surveyed the Herbarium of the University of Belgrade (BEOU) to document vascular plant taxa occurring in Serbia that are of international importance (listed in the Habitats Directive, the Bern Convention, CITES, and the EU Wildlife Trade Regulation). A total of 1315 herbarium sheets representing 128 taxa were observed. Although these data confirm the presence of many taxa in Serbia, 28 taxa reported in the literature lack herbarium specimens collected in Serbia since 1950 and deposited in BEOU, indicating lack of contemporary data based on vouchers. More than half of the taxa are represented by fewer than ten herbarium specimens, limiting reliable assessment of their national distribution. The results highlight the importance of herbarium data for identifying knowledge gaps and supporting conservation planning, and the need for targeted field research and deposition of specimens. eng Đurović, Sanja Z. Đorđević, Vladan Stevanovski, Ivana Buzurović, Uroš Kuzmanović, Nevena Lakušić, Dmitar Vukojičić, Snežana The BEOU herbarium as a valuable source of data on internationally important plant taxa in Serbia Biologica Nyssana 2026 info:eu-repo/semantics/article All rights reserved Bern Convention, biodiversity conservation, chorological data, CITES, EU Wildlife Trade Regulation, Habitats Directive, herbarium collections