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The Smooth-leaved Elm Ulmus minor subsp. minor cultivar 'Hoersholmiensis' [2] is a tree with an upright habit and rapid growth. The leaves are lanceolate or narrowly obovate, acuminate at the tip and with a cuneate base, clear green in colour [1]. The tree was planted in the Netherlands, notably along the Westlandsgracht in Amsterdam where it still survives, although upper branches are often killed by Coral-spot Fungus Nectria cinnabarina. The cultivar is believed to have originated in the Hørsholm Planteskole, Denmark, circa 1885 and propagated by the Nielsen nursery in Hørsholm [2]. Introduced to the USA, it was crossed and back-crossed there with the Siberian Elm Ulmus pumila to create several popular, disease-resistant cultivars in the 1970s.
[edit] Hybrid cultivars
[edit] Arboreta etc accessions
None known
[edit] Nurseries
[edit] Europe
[edit] Synonymy
- Ulmus carpinifolia 'Hoersholm': Krüssmann, Handbh. Laubgeh. 2: 534, 1962
- Ulmus carpinifolia 'Hoersholmensis': Meded. Comite Best. Iepenz, 13: 10, 1933
- Ulmus carpinifolia 'Hoersholmii': Plant Buyer's Guide, ed. 6, 285, 1958
- Ulmus carpinifolia var. horsholmii: Melville, Jour. Linn. Soc. Lond. Bot., 53: 88, 90. 1946
[edit] References
- ^ Bean, W. J. (1980) Trees and shrubs hardy in Great Britain (8th edition). Murray, UK.
- ^ Green, P. S. (1964). Registration of cultivar names in Ulmus. Arnoldia, Vol. 24. Arnold Arboretum, Harvard University. [1]
