Related Research Articles
The Field Elm cultivar Ulmus minor 'Propendens', described by Schneider in 1904 as U. glabra (:minor) var. suberosa propendens, Weeping Cork-barked elm, was said by Krüssmann (1976) to be synonymous with the U. suberosa pendula listed by Lavallée without description in 1877. Earlier still, Loudon's Arboretum et Fruticetum Britannicum 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.
The so-called American Elm cultivar Ulmus americana 'Variegata' was a Belgian clone mentioned by Wesmael in Bulletin de la Fédération des sociétés d'horticulture de Belgique, 1862, as Ulmus americana var. variegataHort. It was marketed by the Baudriller nursery of Angers as U. americana foliis variegatis. Wesmael's herbarium specimens, however, held in the Botanic Garden, Meise, both of his Ulmus americana and of his Ulmus americana var. variegata, do not appear to show American white elm leaves. It is known that nurseries in Europe and America marketed the golden wych elm Ulmus glabra 'Lutescens' as Ulmus americana aurea, and it is likely that Wesmael's Ulmus americana variegata was similarly misnamed, and perhaps derived from a reverting branch of aurea, whose leaves it resembled.
The Field Elm cultivar Ulmus minor 'Albo-Dentata' first featured in the Baudriller nursery catalogue of 1880 as U. microphylla foliis albo-dentata. It was distributed by the Späth nursery of Berlin in the late 19th and early 20th century, as U. campestris microphylla fol. albo-dentatis.
The Field Elm cultivar Ulmus minor 'Cucullata', the Hooded elm, was listed by Loddiges of Hackney, London, in their catalogue of 1823 as Ulmus campestris cucullata, and later by Loudon in Arboretum et Fruticetum Britannicum (1838), as U. campestris var. cucullata.
The Field Elm cultivar Ulmus minor 'Folia Alba-Punctata' was first identified by C. de Vos in 1867, as Ulmus campestris fol. albo punctatis. The tree is assumed to be U. minor by Green.
The Field Elm cultivar Ulmus minor 'Laciniata' was listed by Wesmael in Bulletin de la Fédération des sociétés d'horticulture de Belgique 1862: 390 1863 as Ulmus campestris var. nuda subvar. microphylla laciniataHort. Vilv..
The Field Elm cultivar Ulmus minor 'Argenteo-Variegata' or simply 'Variegata', known in Australasia and North America as Silver Elm or Tartan Elm, is said to have been cultivated in France from 1772. Green noted that variegated forms of Field Elm "arise frequently, and several clones may have been known under this name". Dumont de Courset (1802) listed an U. campestris var. glabra variegata, Loudon (1838) an U. nitens var. variegata, and Wesmael (1863) an U. campestris var. nuda microphylla variegata.
The elm cultivar Ulmus 'Argenteo-Marginata' was first mentioned by Deegen in Deutsches Magazin für Garten- und Blumenkund (1879), as Ulmus campestris elegans foliis argenteo-marginatis. An U. campestris fol. argenteo-marginataHort. was distributed by the Späth nursery, Berlin, from the 1890s to the 1930s.
The hybrid elm cultivar Ulmus × hollandica 'Tricolor' was first listed as U. suberosa tricolor by C. de Vos in 1867.
The elm cultivar Ulmus 'Folia Variegata Pendula' is possibly one of a number of Ulmus × hollandica cultivars arising from the crossing of Wych Elm Ulmus glabra with Field Elm Ulmus minor.
The Field Elm cultivar Ulmus minor 'Microphylla Pendula', the Weeping small-leaved elm, was first listed by the Travemünde nursery, Lübeck, and described by Kirchner in Petzold & Kirchner's Arboretum Muscaviense (1864), as Ulmus microphylla pendulaHort.. By the 1870s it was being marketed in nurseries in Europe and America as Ulmus campestris var. microphylla pendula.
The putative Wych Elm cultivar Ulmus glabra 'Latifolia' was identified in Audibert's Tonelle (1817) as U. campestrisLinn. [ = U. glabraHuds.] latifolia. The tree is reputed to have originated circa 1750 in or around Mechelen, and to have been widely planted throughout Belgium. A 1912 herbarium specimen from Oudenbosch, however, shows a hybrid leaf labelled Ulmus hollandica latifolia.
The hybrid elm cultivar Ulmus × hollandica 'Microphylla' was listed in the Loddiges, Catalogue of 1823 as U. stricta microphylla but without description. A specimen in the Herb. Nicholson at Kew was identified by Melville as U. × hollandica.
The Field Elm cultivar Ulmus minor 'Microphylla Rubra' was listed by C. de Vos in Handboek, 203, 1887, as Ulmus campestris microphylla rubra but did not include a description.
The Field Elm cultivar Ulmus minor 'Pendula' was said to have been raised in Belgium in 1863. It was listed as Ulmus sativa pendula by C. de Vos in 1887, and by Boom in 1959 as a cultivar.
'Pitteurs Pendula' was listed by C. de Vos in Handboek Supplement 16, 1890, as Ulmus pitteursii pendula. However, Hans M. Heybroek, erstwhile head of the elm breeding programme at the de Dorschkamp Research Institute for Forestry and Landscape Planning at Wageningen, Netherlands, identified the tree as Zelkova × verschaffeltii.
The elm cultivar Ulmus 'Rotundifolia' was raised from seed at the Jardin des plantes, Paris, and first described by Carrière in Revue Horticole, 1868, as Ulmus rotundifolia. It was later listed by Mottet in Nicholson & Mottet, Dictionnaire pratique d'horticulture et de jardinage (1898), as Ulmus campestris var.rotundifoliaHort.. It was considered "possibly Ulmus carpinifolia" by Green.
Ulmus boissieriGrudz.,, a disputed species of elm found in Iran, was identified by Grudzinskaya in 1977. She equated her "new species" with the U. campestris f. microphylla collected in 1859 in Kerman Province and described in his Flora Orientalis (1879) by Boissier, for whom she named it, treating Boissier's specimen as the "type". The tree is endemic the provinces of Kermanshah and Kerman., and also the Zagros forests, growing with Quercus brantii, Celtis australis, Platanus orientalis, Fraxinus sp., and Cerasus mahaleb.
Ulmus × hollandica 'Wentworthii 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 pendulaHort.. 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.
The Field Elm cultivar Ulmus minor 'Cucullata Variegata', a variegated form of U. minor 'Cucullata', was listed by C. de Vos, in 1867, as U. americana cucullata folia variegata and by Schelle in Beissner Handbuch der Laubholz-Benennung, 82 (1903) as U. campestris concavifolia cucullata variegataHort, without description.
References
- ↑ "Harvard University Herbaria & Libraries".
- ↑ Green, Peter Shaw (1964). "Registration of cultivar names in Ulmus". Arnoldia. Arnold Arboretum, Harvard University. 24 (6–8): 41–80. Retrieved 16 February 2017.