Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Geum urbanum (Rosaceae), a new naturalized species for Connecticut.

Abstract

This paper provides information on the discovery of the occurrence of Geum urbanum in a wetland of Aton Forest, a biological research station in Norfolk, Connecticut, USA, in 24 July 2005. Subsequently, additional plants were found in uplands adjacent to the wetland. A second naturalized location was discovered on August 18, 2007, approximately 930 m southeast of the original site on neighboring private property at a woodland edge and was considered a separate population. Another occurrence was observed in 1 June 2017, in Southbury, New Haven County, Connecticut. This is thought to be the first report of the presence of G. urbanum in Connecticut, USA. If this G. urbanum is more common than currently known, it may warrant consideration as a potential invasive as well as a threat to G. rivale through hybridization. This discovery highlights the importance of thorough floristic inventories that are well documented with voucher specimens.