''Ulmus'' 'Rebona' is an American

hybrid Hybrid may refer to: Science * Hybrid (biology), an offspring resulting from cross-breeding ** Hybrid grape, grape varieties produced by cross-breeding two ''Vitis'' species ** Hybridity, the property of a hybrid plant which is a union of two dif ...

cultivar A cultivar is a type of cultivated plant that people have selected for desired traits and when propagated retain those traits. Methods used to propagate cultivars include: division, root and stem cuttings, offsets, grafting, tissue culture, ...

raised by the

Wisconsin Alumni Research Foundation The Wisconsin Alumni Research Foundation is the independent nonprofit technology transfer organization serving the University of Wisconsin–Madison and Morgridge Institute for Research. It provides significant research support, granting tens ...

(WARF) as selection 'W916', derived from a crossing of

Japanese Elm Japanese elm is a common name for several plants and may refer to: * ''Ulmus davidiana'' var. ''japonica'' *''Zelkova serrata ''Zelkova serrata'' (Japanese zelkova, Japanese elm or keyaki or keaki; ja, 欅 (ケヤキ) keyaki /槻 (ツキ) tsu ...

clone W43-8 = 'Reseda' with Siberian Elm clone W426 grown from seed collected from a street tree at

Yankton, South Dakota Yankton is a city in and the county seat of Yankton County, South Dakota, United States. The population was 15,411 at the 2020 census, and it is the principal city of the Yankton Micropolitan Statistical Area, which includes the entirety of Y ...

. The tree was registered in 1993 by Conrad Appel KG, of

Darmstadt Darmstadt () is a city in the States of Germany, state of Hesse in Germany, located in the southern part of the Frankfurt Rhine Main Area, Rhine-Main-Area (Frankfurt Metropolitan Region). Darmstadt has around 160,000 inhabitants, making it th ...

(ceased trading 2006) and is a sibling of 'New Horizon' (selection 'W917'). In Europe, 'Rebona' is marketed as a ''Resista'' el

protected under E U Plant breeders' rights, breeders' rights (E U council decision 2100/94).

Description

'Rebona' bears a close resemblance to its sibling 'New Horizon', but requires less maintenance owing to a better leader. The tree grows rapidly, developing a fastigiate pyramidal shape with ascending branches. The glossy clear-green leaves are comparatively small, though slightly larger than those of 'New Horizon'.Heybroek, H. M., Goudzwaard, L, Kaljee, H. (2009). ''Iep of olm, karakterboom van de Lage Landen'' (:Elm, a tree with character of the Low Countries). KNNV, Uitgeverij.

Pests and diseases

'Rebona' is highly resistant to

Dutch elm disease Dutch elm disease (DED) is caused by a member of the sac fungi (Ascomycota) affecting elm trees, and is spread by elm bark beetles. Although believed to be originally native to Asia, the disease was accidentally introduced into Americas, America ...

, rated 5 out of 5.

Cultivation

'Rebona' has been widely planted as a street tree in Germany

the Netherlands, and to a lesser extent in France and the UK.Brookes, A. H. (2020). ''Disease-resistant elm cultivars''. Butterfly Conservation, Lulworth, England

/ref>

Synonymy

* 'Rebone'

Accessions

Europe

*Botanischer Garten Marbur

Marburg Marburg ( or ) is a university town in the German federal state (''Bundesland'') of Hesse, capital of the Marburg-Biedenkopf district (''Landkreis''). The town area spreads along the valley of the river Lahn and has a population of approximate ...

, Germany. No details available. *

Grange Farm Arboretum The Grange Farm Arboretum is a small private arboretum comprising 3 hectares accommodating over 800 trees, mostly native and ornamental species or cultivars, notably oaks, ashes, walnuts and elms, growing on a calcareous loam.Ostler, J. (2009) ' ...

Lincolnshire Lincolnshire (abbreviated Lincs.) is a county in the East Midlands of England, with a long coastline on the North Sea to the east. It borders Norfolk to the south-east, Cambridgeshire to the south, Rutland to the south-west, Leicestershire ...

, UK. Acc. no. not known. *

Royal Botanic Gardens, Kew Royal Botanic Gardens, Kew is a non-departmental public body in the United Kingdom sponsored by the Department for Environment, Food and Rural Affairs. An internationally important botanical research and education institution, it employs 1,100 ...

, UK. Acc. no. not known. *

Sir Harold Hillier Gardens The Sir Harold Hillier Gardens is an arboretum comprising 72 hectares (180 acres) accommodating over 42,000 trees and shrubs in about 12,000 taxa, notably a collection of oaks, camellia, magnolia and rhododendron. The Gardens are located nor ...

Romsey Romsey ( ) is a historic market town in the county of Hampshire, England. Romsey was home to the 17th-century philosopher and economist William Petty and the 19th-century British prime minister, Lord Palmerston, whose statue has stood in the t ...

, UK. One tree planted Crookhill overflow parking area. Acc. no. 2018.0019 *Wijdemeren City Council, Netherlands. Elm Collection, first planted 2005 De Vijnen, Nederhorst den Berg. Used in elm trials Ankeveen 2009.

Nurseries

Europe

*Baumschule Grossbötzl Ort, Austria. *Björkhaga Plantskola

Veberöd Veberöd () is a locality situated in Lund Municipality, Skåne County, Sweden Sweden, formally the Kingdom of Sweden,The United Nations Group of Experts on Geographical Names states that the country's formal name is the Kingdom of Swed ...

, Sweden. *Clasen & Co

Rellingen Rellingen is a municipality in the district of Pinneberg, in Schleswig-Holstein, Germany. It is situated approximately 7 km east of Pinneberg, and 10 km northwest of Hamburg. Population as of December 31, 2007 is 13,746. The total land ...

, Germany. *Eisele GmbH

, Germany. *Hilliers Nurserie

Liss, Hampshire, Liss, UK. *Noordplan

Glimmen Glimmen is a village in the northeastern Netherlands. It is located in the municipality of Groningen, about 10 kilometres from the city. It had a population of around 1,342 in 2021. The river Drentsche Aa flows past the village, nearby the ''Huis ...

, Netherlands. *Pépinières Rouy-Imbert Monfavet-

Avignon Avignon (, ; ; oc, Avinhon, label=Provençal dialect, Provençal or , ; la, Avenio) is the Prefectures in France, prefecture of the Vaucluse Departments of France, department in the Provence-Alpes-Côte d'Azur Regions of France, region of So ...

, France.

References

Hybrid elm cultivar Ulmus articles with images Ulmus {{Ulmaceae-stub