Ulmus 'Nanguen' (selling name Lutèce) is a complex fourth generation Dutch hybrid cultivar raised at the Dorschkamp Research Institute for Forestry & Landscape Planning, Wageningen. Lutèce was derived from the cross 'Plantyn' × ('Bea Schwarz' selfed), an ancestry comprising four field elms (U. minor), a wych elm (U. glabra), the curious Exeter Elm ('Exoniensis'), and a frost-resistant selection of the Himalayan elm (U. wallichiana). Lutèce has been deemed the modern cultivar most closely resembling the native European elms.