Ulmus 'Pitteurs'

Infobox Cultivar | name = "Ulmus"

---

image_caption = Ulmus 'Pitteurs', drawing from Morren Morren, C. (1848)."Journal d'Agriculture Pratique - d'economie forestiere, d'economie rurale et d'education des animaux domestiques du Royaume de Belgique" p. 114] , also picturing H. B. T de Pitteurs?
cultivar = 'Pitteurs'
origin = Belgium

'Pitteurs' is probably one of a number of cultivars arising from the crossing of the Wych Elm "Ulmus glabra" with a variety of Field Elm "Ulmus minor". The tree was first identified by Morren as "l'orme Pitteurs" Morren, C. (1848)."Journal d'Agriculture Pratique - d'economie forestiere, d'economie rurale et d'education des animaux domestiques du Royaume de Belgique" p. 114] .

Description

'Pitteurs' was a tall tree, chiefly distinguished by its huge, rounded, convex leaves, < 20 cm long by < 19 cm broad, a little attenuate at the apex and with prominent venation.

Cultivation

Reputedly one of two varieties obtained in 1845 by Henri Bonaventure Trudon de PitteursSchelev, A. (1854) "Annuaire statistique et historique belge", page 325, Brussel - Leipzig] of St-Trond (Flemish: Sint-Truiden), near Liege, Belgium, the tree was planted on his estate and along roadsides in the region. Augustine Henry thought the tree, which produced shoots growing almost one metre a year, identical with those he saw at Looymans' nursery at Oudenbosch, which he considered identical to a variety of Wych Elm occasionally sold as var. "macrophylla" Elwes, H. J. & Henry, A. (1913). "The Trees of Great Britain & Ireland". Vol. VII. pp 1848-1929. Private publication, Edinburgh. [http://fax.libs.uga.edu/QK488xE4/7tgbi/] ] .

In 1998 an unsuccessful search of the de Pitteurs-Hiegaerts Estate (now in the public domain and known as the Speelhof park) was mounted in an attempt to rediscover the elm Driesen, W. (2008), Stedelijke bibliotheek de Leidrad, Sint-Truiden] . It is assumed the cultivar fell victim to Dutch elm disease, as did thousands of other elms in the same district. However, 'Pitteurs' was known to have been marketed (as "U. montana" 'Pitteursi') in Poland in the 19th century by the Ulrich nursery Ulrich, C. (1894), "Katalog Drzew i Krezewow, C. Ulrich", Rok 1893-94, Warszawa] , Warsaw, and so may still survive in Eastern Europe. Several trees thought to survive near Brighton Johnson, Owen (ed.) (2003). "Champion Trees of Britain & Ireland". Whittet Press, ISBN 9781873580615.] in England are now considered large-leafed examples of "Ulmus laevis". The only confirmed specimen, at the Extra Mural Cemetery in Brighton, was blown down in the Great Storm of 1987. 'Pitteurs' is not known to have been introduced to North America or Australasia.

Hybrid cultivars

'Pitteurs' was crossed with "Ulmus × hollandica" in the Dutch elm breeding programme before World War II, but none of the progeny were retained Went, J. C. (1954). The Dutch elm disease - Summary of 15 years' hybridisation and selection work (1937-1952). "European Journal of Plant Pathology", Vol 60, 2, March 1954.] .

ynonymy

* l'Orme gras
*?l'Orme St. Trond
*"Ulmus campestris latifolia, foliis rotundata": Morren, "Jour. Agric. Prat. Belg." 4: 509, 511, 1851.
*"Ulmus campestris" var "pitteursii": Wesmael in "Bull. Fed. Soc. Hort. Belg." 1862: 382, 1863.
*"Ulmus scabra macrophylla" Hort.: Dieck, (Zöschen, Germany), "Haupt-Cat, 1885" p. 82.

References