Ulmus × hollandica 'Dumont' explained

Ulmus × hollandica 'Dumont'
Hybrid:	U. glabra × U. minor
Cultivar:	'Dumont'
Origin:	Belgium

The hybrid elm cultivar Ulmus × hollandica 'Dumont' was a very vigorous elm raised from a tree discovered by a gardener on the estate of M. Dumont at Tournay, Belgium, c. 1865.^[1]

Description

The tree had a straight trunk and a narrow regular, pyramidal crown, Elwes likening it to Wheatley Elm in habit.^[2] The leaves were somewhat smaller than those of 'Belgica'.^{[3] [4]}

Pests and diseases

'Dumont' was very susceptible to Dutch elm disease.

Cultivation

No specimens are known to survive. The tree was once a popular choice for street planting in Belgium and France, notably at Ypres, where Henry collected a specimen for Kew Gardens in 1912,^[5] and at Versailles (town, not palace), where it was supplied by Moser's nursery and planted in "peculiar clipped avenues".^[2] Early 20th-century photographs of the Place Barascude and Avenue Thiers, Versailles, show Wheatley-like elms, some clipped, and pruned avenues by Moser's nursery.^{[6] [7]} An U. campestris Dumont, "a vigorous grower" with "large leaves", appeared in the 1909 catalogue of the Bobbink and Atkins nursery, Rutherford, New Jersey.^[8] The Hesse Nursery of Weener, Germany, marketed an Ulmus latifolia Dumont in the 1930s.^[9]

Synonymy

• Ulmus campestris var. Dumontii: Mottet http://kiki.huh.harvard.edu/databases/botanist_search.php?id=65665 in Nicholson http://asaweb.huh.harvard.edu:8080/databases/botanists?id=102243 & Mottet's Dictionnaire pratique d'horticulture et de jardinage 5: 383, 1898,^[10] and by Krüssmann http://kiki.huh.harvard.edu/databases/botanist_search.php?id=67644 in Handb, Laubgeh. 2: 537, 1962.
• Ulmus 'De Dumont': Plant Buyer's Guide, ed. 6. 286, 1958.

Notes and References

1. Green . Peter Shaw . Peter Shaw Green . 1964 . Registration of cultivar names in Ulmus. Arnoldia . 24. 41–80 . 6–8 . . 16 February 2017.
2. Book: Elwes. Henry John. Henry John Elwes. Henry. Augustine. Augustine Henry. 1913. The Trees of Great Britain & Ireland. 7. 1871–1872.
3. 1905 . Famille XV – Ulmacées. Annales des travaux publics de Belgique . 62. 1226.
4. Web site: Herbarium catalogue. Ulmus belgica v. Dumontii. Board of Trustees of the Royal Botanic Gardens, Kew. 17 October 2016. Ypres specimen (Augustine Henry, 1912); Long shoot, possibly juvenile; U. hollandica Mill. 'Dumonti'; Poort Bulten Arboretum specimen, Den Haag (1931); Long shoot, possibly juvenile; U. hollandica Mill. 'Dumontii' Rehd.; Den Haag specimen (1932)
5. http://apps.kew.org/herbcat/detailsQuery.do?barcode=K000852722 Ulmus belgica Burgsd. ex Rehder var. dumontii A.Henry, apps.kew.org, specimen K000852722
6. http://www.cartophilie-viroflay.org/article.php?id_article=66 Place Barascud (Barascude), Versailles, and Pépinière du Moser, 'Les quartiers de Versailles', cartophilie-viroflay.org
7. https://www.cparama.com/forum/versailles-gare-et-trains-t21696.html#p127535 Tramway de Saint Cyr au square Barascude, cparama.com
8. Book: 1909. Bobbink and Atkins, Rutherford. N.J.. 51.
9. Book: Hesse. Hermann Albert. Preis- und Sortenliste. 1932. 96–97. 18 January 2018.
10. Book: Mottet . Séraphin Joseph Mottet . Nicholson . George . Dictionnaire pratique d'horticulture et de jardinage . 1898 . 383 .