Daijiang Li, Luke Potgieter, Myla Aronson, Irena Axmanová, Benjamin Baiser, Marta Carboni, Laura Celesti-Grapow, Sonja Knapp, Ingolf Kühn, Ana Carolina Lacerda de Matos, Zdeňka Lososová, Flavia Montaño-Centellas, Petr Pyšek, David Richardson, Lauren Trotta, Rafael Zenni, Sarel Cilliers, Bruce Clarkson, Amy Davis, Rebecca Dolan, Marcin Dyderski, Franz Essl, Orou Gaoue, Joanne Gui, Charly Géron, Gustavo Heringer, Cang Hui, Anzar Khuroo, Stefan Klotz, Peter Matti Kotanen, Holger Kreft, Frank La Sorte, Jonas J Lembrechts , Bernd Lenzner, Christopher Lepczyk, Scott MacIvor, Cristina Martínez-Garza, Akira Mori, Charles Nilon, Jan Pergl, Stefan Siebert, Alyona Tretyakova, Toby Tsang, Kei Uchida, Mark van Kleunen, Montserrat Vilà, Hua-Feng Wang, Patrick Weigelt, Peter Werner, Nicholas Williams, Marten Winter, Marc Cadotte 

1. Urban areas are foci for the introduction of non-native plant species, and they often act as launching sites for invasions into the wider environment. Although interest in biological invasions in urban areas is growing rapidly, and the extent and complexity of problems associated with invasions in these systems have increased, data on the composition and numbers of non-native plants in urbanized areas remain scattered and idiosyncratic.
2. We assembled data from multiple sources to create the Global Urban Biological Invasions Compendium (GUBIC) for vascular plants representing 553 urban centres from 61 countries across every continent except Antarctica.
3. The GUBIC repository includes 8,140 non-native plant species from 253 families. The number of urban centres in which these non-native species occurred had a log-normal distribution, with 65.2% of non-native species occurring in fewer than 10 urban centres.
4. Wider implications and relevance: The dataset has wider applications for urban ecology, invasion biology, macroecology, conservation, urban planning and sustainability. We hope this dataset will stimulate future research in invasion ecology related to the diversity and distributional patterns of non-native flora across urban centres worldwide. Further, this information should aid the early detection and risk assessment of potential invasive species, inform policy development, and assist in setting management priorities.