Ulmus × hollandica 'Wentworthii Pendula'

Ulmus × hollandica 'Wentworthii Pendula' (in continental Europe also spelled 'Wendworthii Pendula'), commonly known as the Wentworth Elm or Wentworth Weeping Elm, is a cultivar with a distinctive weeping habit that appears to have been introduced to cultivation towards the end of the 19th century. The tree is not mentioned in either Elwes and Henry's or Bean's classic works on British trees. The earliest known references are Dutch and German, the first by de Vos in Handboek tot de praktische kennis der voornaamste boomen (1890). At about the same time, the tree was offered for sale by the Späth nursery of Berlin as Ulmus Wentworthi pendula Hort. (see Etymology). The 'Hort.' in Späth's 1890 catalogue, without his customary label "new", confirms that the tree was by then in nurseries as a horticultural elm. De Vos, writing in 1889, states that the Supplement to Volume 1 includes entries announced since the main volume in 1887, putting the date of introduction between 1887 and 1889.

De Vos suggested that the tree was a form of Ulmus × hollandica, a view accepted in the Ulmus names lists of Royal Botanic Gardens, Kew and Royal Botanic Garden Edinburgh. At Kew the cultivar was labelled Ulmus × hollandica 'Wentworthii'. Green claimed (1964), without citation, that Melville had identified the Kew specimen as 'Vegeta' (the lower branches of open-grown 'Vegeta' can also be pendulous), though Wentworth differs strikingly in form, leaf and bark from Huntingdon. Melville probably meant 'Vegeta' group, as he had already identified (1958) the RBGE Wentworth elm, the same clone as Kew's, as a hybrid of Ulmus × hollandica and Plot Elm. A Wageningen Arboretum herbarium leaf-specimen (1962) that appears identical to 'Wentworthii' was labelled U. × hollandica 'Pendula'.

Richens and Rackham noted that examples of pendulous Ulmus × hollandica occur in the East Anglian hybridization zone.