Inventory of the urban flora of Budapest (Hungary) highlighting new and noteworthy floristic records Author Rigo, Attila Doctoral School of Environmetnal Sciences, Hungarian University of Agriculture & Life Sciences, Pater Karoly u. 1, 2100, Goedoello, Hungary & Experimental Vegetation Ecology Research Group, Institute of Ecology and Botany, Centre for Ecological Research, Alkotmany ut 4, 2163, Vacratot, Hungary rigo.attila@ecolres.hu Author Malatinszky, Akos https://orcid.org/0000-0001-6388-9191 Institute for Wildlife Management and Nature Conservation, Hungarian University of Agriculture and Life Sciences, Pater Karoly u. 1, 2100, Goedoello, Hungary Author Barina, Zoltan https://orcid.org/0000-0003-3117-7186 H- 1095, Ipar utca 3, Budapest, Hungary text Biodiversity Data Journal 2023 2023-11-27 11 110450 110450 http://dx.doi.org/10.3897/BDJ.11.e110450 journal article http://dx.doi.org/10.3897/BDJ.11.e110450 1314-2828-11-e110450 707633EA8EE556CAA96973004EF439FA Cyperus eragrostis Lam. 1791 Materials Type status: Other material . Occurrence : recordedBy: Attila Rigo , Akos Malatinszky ; individualCount: 4 ; reproductiveCondition: fruit-bearing; occurrenceID: 86215EC2-B0FC-5239-BCB2-94576C287559 ; Taxon : scientificName: Cyperus eragrostis; family: Cyperaceae ; taxonRank: species; Location : continent: Europe ; country: Hungary ; county: Budapest ; municipality: Budapest III.; locality: Agoston street ; decimalLatitude: 47.545764 ; decimalLongitude: 19.031707 ; Identification : identifiedBy: Attila Rigo ; Event : eventDate: 23/09/2022 ; habitat: irrigated lawn in residential area Type status: Other material . Occurrence : recordedBy: Attila Rigo ; individualCount: 3 ; reproductiveCondition: fruit-bearing; occurrenceID: 886EA755-6A31-53BA-B1FF-ACBF05618556 ; Taxon : scientificName: Cyperus eragrostis; family: Cyperaceae ; taxonRank: species; Location : continent: Europe ; country: Hungary ; county: Budapest ; municipality: Budapest VIII.; locality: ELTE Botanical Garden ; decimalLatitude: 47.485348 ; decimalLongitude: 19.084849 ; Identification : identifiedBy: Attila Rigo ; Event : eventDate: 26/10/2022 ; habitat: flower pot in botanical garden Type status: Other material . Occurrence : recordedBy: Attila Rigo ; individualCount: 2 ; reproductiveCondition: fruit-bearing; occurrenceID: 561D2ED8-0B11-5534-9204-79FC7897BC51 ; Taxon : scientificName: Cyperus eragrostis; family: Cyperaceae ; taxonRank: species; Location : continent: Europe ; country: Hungary ; county: Budapest ; municipality: Budapest X.; locality: Kobanyai road ; decimalLatitude: 47.483073 ; decimalLongitude: 19.117633 ; Identification : identifiedBy: Attila Rigo ; Event : eventDate: 28/10/2022 ; habitat: flower pot in garden store Notes Native to South America, but occurs in southern, western and central Europe, North Africa and North America as an alien introduced as an ornamental ( Mokni and Verloove 2021 ), with some recent Hungarian records ( Mesterhazy 2021 ). These are the first records of the plant from Budapest. Aside from these records, the authors found a small population at the bank of the Danube, north of Budapest. The plant might become invasive.