 Earlier still, Loudon's "Arboretum et Fruticetum Britannicum" (Volume 7, 1854) had included an illustration of a pendulous "cork-barked field elm", "U. campestris suberosa".An "U. campestris suberosa pendula" was in nurseries by the 1870s (see 'Cultivation').Not to be confused with "U. campestris" (