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'. Melville dismissed the Kew specimen as Ulmus × hollandica 'Vegeta' (the lower branches of open-grown Huntingdon elms can also be pendulous), though Wentworth Elm differs strikingly in form, leaf and bark from Huntingdon. Richens and Rackham noted that examples of pendulous Ulmus × hollandica occur in the East Anglian hybridization zone. At RBGE, Wentworth Elm (RBGE ref. no. 32931) was identified as a hybrid of the Huntingdon Elm and Plot's Elm. A Wageningen Arboretum herbarium leaf-specimen that appears identical to 'Wentworthii' (see 'External links') was labelled U. × hollandica 'Pendula'. Description A tall, conspicuously pendulous tree, bell-shaped when young, domed when older. The outer branchlets hang in long 'curtains', showing the 'bones' above the foliage rather like Ulmus glabra 'Horizontalis', with large deeply toothed hybrid leaves, some up to long. The upper leaf surface is glossy and very sparsely hairy. The petiole at <5 mm is shorter than that of Huntingdon Elm. The bark of mature trees is shallowly fissured, unlike the deeply fissured, often 'latticed' bark of Huntingdon. The tightly-clustered, apetalous wind-pollinated flowers are bright red, and appear in early spring. The seed is displaced towards the apex of the samara. Pests and diseases The