Ulmus minor 'Viminalis'

The field elm cultivar Ulmus minor 'Viminalis' (:'willow-like'), occasionally referred to as the twiggy field elm, was raised by Masters in 1817, and listed in 1831 as U. campestris viminalis, without description. Loudon added a general description in 1838, and the Cambridge University Herbarium acquired a leaf specimen of the tree in 1866. Moss, writing in 1912, said that the Ulmus campestris viminalis from Cambridge University Herbarium was the only elm he thought agreed with the original Plot's elm (not U. minor 'Plotii') as illustrated by Dr. Plot in 1677 from specimens growing in an avenue and coppice at Hanwell near Banbury. Elwes and Henry (1913) also considered Loudon's Ulmus campestris viminalis to be Dr Plot's elm. Its 19th-century name, U. campestris var. viminalis, led the cultivar to be classified for a time as a variety of English Elm. On the Continent, 'Viminalis' was listed as Ulmus antarctica Hort., the 'zierliche Ulme' [:'dainty elm'] of Kirchner's Arboretum Muscaviense (1864).

Melville considered 'Viminalis' one form, the 'type' cultivar, of the natural, variable hybrid, U. minor × U. minor 'Plotii', which occurs in England where the two trees overlap, and which he called, believing U. plotii Druce a species, U. × viminalis. He questioned, however, Henry's claim that 'Viminalis' was Dr Plot's elm. Writing in 1940 and referring to a pencil rubbing in Herb. Druce, vol. 113 of the Sloane Collection, he wrote "I can see no reason to doubt that this is Plot's plant," but "it is [not] U. × viminalis Lodd". Boom (1959) and Bean (1988) listed 'Viminalis' as a cultivar and the 'type' clone of Melville's U. × viminalis.