The Field Elm

Field Elm

Ulmus minor Mill., the Field Elm, is by far the most polymorphic of the European species, although its taxonomy remains a matter of contention. Its natural range is predominantly south European, extending to Asia Minor; its northern outposts are the Baltic islands of Öland and Gotland, although it...

 Ulmus minor sensu latissimo cultivar

Cultivar

A cultivar'Cultivar has two meanings as explained under Formal definition. When used in reference to a taxon, the word does not apply to an individual plant but to all those plants sharing the unique characteristics that define the cultivar. is a plant or group of plants selected for desirable...

 'Hoersholmiensis' http://images.google.nl/images?q=Ulmus%20minor%20'Hoersholmiensis' is believed to have originated in the Hørsholm

Hørsholm

Hørsholm Kommune is a municipality in the Copenhagen Capital Region in the northern part of the island of Zealand in eastern Denmark. The municipality covers an area of 31 km², and has a total population of 24,197...

 Planteskole, Denmark

Denmark

Denmark is a Scandinavian country in Northern Europe. The countries of Denmark and Greenland, as well as the Faroe Islands, constitute the Kingdom of Denmark . It is the southernmost of the Nordic countries, southwest of Sweden and south of Norway, and bordered to the south by Germany. Denmark...

, circa 1885 and was propagated by the Nielsen nursery in Hørsholm .

Description

The tree has an upright habit and rapid growth. The leaves are lanceolate

Leaf shape

In botany, leaf shape is characterised with the following terms :* Acicular : Slender and pointed, needle-like* Acuminate : Tapering to a long point...

 or narrowly obovate

Leaf shape

In botany, leaf shape is characterised with the following terms :* Acicular : Slender and pointed, needle-like* Acuminate : Tapering to a long point...

, acuminate

Leaf shape

In botany, leaf shape is characterised with the following terms :* Acicular : Slender and pointed, needle-like* Acuminate : Tapering to a long point...

 at the tip and with a cuneate

Leaf shape

In botany, leaf shape is characterised with the following terms :* Acicular : Slender and pointed, needle-like* Acuminate : Tapering to a long point...

 base, clear green in colour , turning a deep yellow in autumn.

Pests and diseases

'Hoersholmiensis' is susceptible to Dutch elm disease

Dutch elm disease

Dutch elm disease is a disease caused by a member of the sac fungi category, affecting elm trees which is spread by the elm bark beetle. Although believed to be originally native to Asia, the disease has been accidentally introduced into America and Europe, where it has devastated native...

 and Coral-spot Fungus Nectria cinnabarina

Nectria cinnabarina

Nectria cinnabarina is a plant pathogen that causes cankers on many tree species and also a disease known as coral spot.- External links :* *...

.

Cultivation

Fine specimens can be seen in Stockholm

Stockholm

Stockholm is the capital and the largest city of Sweden and constitutes the most populated urban area in Scandinavia. Stockholm is the most populous city in Sweden, with a population of 851,155 in the municipality , 1.37 million in the urban area , and around 2.1 million in the metropolitan area...

, in Raoul Wallenberg square and the Karlaplan. The tree was planted in the Netherlands

Netherlands

The Netherlands is a constituent country of the Kingdom of the Netherlands, located mainly in North-West Europe and with several islands in the Caribbean. Mainland Netherlands borders the North Sea to the north and west, Belgium to the south, and Germany to the east, and shares maritime borders...

, notably along the Westlandsgracht in Amsterdam

Amsterdam

Amsterdam is the largest city and the capital of the Netherlands. The current position of Amsterdam as capital city of the Kingdom of the Netherlands is governed by the constitution of August 24, 1815 and its successors. Amsterdam has a population of 783,364 within city limits, an urban population...

 where it still survives, although upper branches are often killed by Coral-spot Fungus.

Hybrid cultivars

The tree was hybridized with 'Commelin' and U. pumila as part of the Dutch elm breeding programme at the De Dorschkamp Institute, Wageningen

Wageningen

' is a municipality and a historical town in the central Netherlands, in the province of Gelderland. It is famous for Wageningen University, which specializes in life sciences. The city has 37,414 inhabitants , of which many thousands are students...

. Seeds arising from the crossing were donated by Hans Heybroek

Hans M. Heybroek

Hans M. Heybroek is a Dutch botanist best known for his researches into the genus Ulmus at the Dorschkamp Research Institute for Forestry & Landscape Planning. Until his retirement in 1992, he was responsible for the raising and release of numerous elm hybrid cultivars, notably 'Columella'...

 to the University of Wisconsin-Madison programme in 1960. The clone 'Regal' was a frost-hardy selection from the resultant seedlings, whilst the later 1984 USDA release 'Homestead' arose from the crossing of another with U. pumila.

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
  Ronald Melville
  Ronald Melville was an English botanist, based at the Royal Botanic Gardens Kew. He is chiefly remembered for his wartime research into rosehips as a source of vitamin C, prompted by the epidemic of scurvy amongst children owing to the reduced importation of fresh fruit...
  
  , Jour. Linn. Soc. Lond. Bot., 53: 88, 90. 1946