Inventory of the urban flora of Budapest (Hungary) highlighting new and noteworthy floristic records

The systematic urban floristic research of Budapest was started in 2018 by the authors with detailed methodology. One scope of the research was to gain knowledge on the plant taxa appearing in Budapest and to compile the inventory of the urban flora of Budapest.We have provided the inventory of the urban flora of Budapest, which includes distribution data for all 973 taxa found in Budapest between May 2018 and May 2023. We also provided new detailed occurrence data for 49 species in Budapest. Seven of them are new to the adventive flora of Hungary (Campanula portenschlagiana Roem. & Schult., Clinopodium nepeta (L.) Kuntze, Chasmanthium latifolium (Michx.) H.O.Yates, Cyrtomium fortunei J.Sm., Linaria maroccana Hook.f., Talinum paniculatum (Jacq.) Gaertn.), three were rediscovered in Hungary (Glebionis coronaria (L.) Cass. ex Spach, Lagenaria siceraria (Molina) Standl., Sisymbrium irio L.) and 18 were recorded for the first time in Budapest. We also provided data for two data-poor (Artemisia scoparia Waldst. & Kit., Polygonum rurivagum Jord. ex Boreau) species and we documented the major expansion of six species.