 Not to be confused with Loudon's "U. campestris nana" (1838), a dwarf field elm "with small, narrow, rough leaves", or with "Ulmus" 'Monstrosa', a long-petioled dwarf field-elm cultivar sometimes referred to as 'Nana Monstrosa'.The tree rarely exceeds 5 m in height, but is often broader.The dark green leaves are smaller than the wych type, 5–9 cm long, often with one or two cusp-like lobes either side of the apex.