"Ulmus montana nana", 'Dwarf Scotch Elm', was introduced to the USA in the late 19th century, appearing as a "new variety" in the 1897 catalogue of the Mount Hope Nursery (also known as Ellwanger and Barry) of Rochester, New York.A 'Nana' appeared as "U. nana", 'Dwarf American elm', a "very small" elm with compact habit, in Kelsey's 1904 catalogue, New York.