The herbarium at the National Museum of Natural History in Sofia has been registered at the Index Herbariorum
since 2021 with the acronym BNHM. It contains two collections — vascular plants and lichens. The vascular plant collection consists of over 5000 specimens whereas the lichenological collection is one of the richest in the country — it contains over 3000 specimens, which are in good shape and well organised.
In 2020 all collections were moved to new storage, where the specimens have been reorganised and stored under appropriate conditions. Digitalisation of the herbarium specimens is underway as part of the Distributed System of Scientific Collections (DiSSCo) in Bulgaria (DiSSCo-BG