Ulmus americana | Ulmus parvifolia | Ulmus minor | Ulmus mexicana | ''Ulmus davidiana'' var. ''japonica'' | Zamia pumila | ''U. pumila'' var. ''arborea'' | Ulmus 'Sapporo Autumn Gold' | Ulmus procera | Ulmus microcarpa | Ulmus × hollandica | Ulmus 'Hoersholmiensis' | Ulmus 'Commelin' | Ulmus americana 'Patmore' |
The cultivar arose from a 1970 crossing of the Siberian Elm Ulmus pumila (female parent) with the hybrid N 215 ('Commelin' × (U. pumila var. arborea × U. minor 'Hoersholmiensis')), the latter grown from seed sent in 1960 to the University of Wisconsin-Madison elm breeding team by Hans Heybroek of the De Dorschkamp Research Institute in the Netherlands.
The Ulmus pumila cultivar 'Aurescens' originated in the National Arboretum, Zöschen, near Merseburg, Germany.