Temporal and spatial herbarium density of Favratia zoysii (Wulfen) Feer (Campanulaceae): Insights into type material and historical distribution of an alpine endemic

<i>Favratiazoysii</i> (Wulfen) Feer is a chasmophyte endemic to the south-eastern Alps and the sole representative of the genus <i>Favratia</i> Feer. Its primary occurrences are in Julian Alps and on Mt. Storžič (Kamnik-Savinja Alps) in Slovenia. This study aims at elucidating the original material utilised by Wulfen in the initial description of <i>Campanulazoysii</i>, later reclassified as <i>F.zoysii</i> by Feer, while also exploring the temporal and spatial density of the species' herbarium collections. To this end, we examined preserved collections from six institutions, including botanical gardens and museums. A total of 127 herbarium vouchers were analysed to identify the specimens referenced by Wulfen. This comprehensive examination of historical collections, spanning over two centuries, allowed us to designate a lectotype, thereby providing a clear typification of <i>F.zoysii</i>. Additionally, we analysed the frequency and geographic distribution of herbarium specimens, a concept referred to as temporal and spatial herbarium density. This combined typification and spatial-temporal analysis not only strengthens the taxonomic clarity of the species, but also provides valuable insights into its botanical history, distribution patterns and conservation needs.