Aquatic plants of Croatia: Data derived from the ZA herbarium collection

As many as 963 herbarium sheets featuring 76 aquatic plant taxa from the ZA collection were digitised and published online through Virtual Herbarium. Aquatic plants have been collected over a period of 176 years, with three peaks (second decade 20th century, in 1940s 1950s, current decade). Most specimens Croatia smaller number neighbouring geographically close countries. The importance is expressed rare threatened species, because it represents only evidence their presence (the regionally extinct Caldessia parnassifolia, well Luronium natans, Callitriche platycarpa, C. truncata, hermaphroditica, Potamogeton alpinus, P. compressus, polygonifolius, Nuphar × spenneriana Sparganium minimum). valuable source data about historical recent distribution that constitute foundation for estimation changes, threat assessment conservation policies.