Ulmus 'Rebona' is an American hybrid cultivar raised by the Wisconsin Alumni Research Foundation (WARF) as selection 'W916', derived from a crossing of Japanese Elm clone W43-8 = 'Reseda' with Siberian Elm clone W426 grown from seed collected from a street tree at Yankton, South Dakota.[1] The tree was registered in 1993 by Conrad Appel KG, of Darmstadt (ceased trading 2006) and is a sibling of 'New Horizon' (selection 'W917'). In Europe, 'Rebona' is marketed as a Resista elm[2] protected under E U breeders' rights (E U council decision 2100/94).
| Ulmus 'Rebona' | |
|---|---|
_120606a.jpg) 'Rebona', Treskowstrasse, Heinersdorf, Berlin (2014) | |
| Genus | Ulmus |
| Hybrid parentage | U. davidiana var. japonica × U. pumila |
| Cultivar | 'Rebona' |
| Origin | US |
Description
edit
'Rebona' bears a close resemblance to its sibling 'New Horizon', but requires less maintenance owing to a better leader. The tree grows rapidly,[3] developing a fastigiate pyramidal shape with ascending branches. The glossy leaves (6 to 9 cm long by 3 to 5 wide) are described by Resista Ulmen as "a little smaller and darker" than those of 'New Horizon'.[3][4] The petiole is 10 to 15 mm long.[5][6]
Pests and diseases
edit'Rebona' is highly resistant to Dutch elm disease, rated 5 out of 5.[4]
Cultivation
edit'Rebona' has been widely planted as a street tree in Germany, the Netherlands, and to a lesser extent in France and the UK.[7]
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![Lines of 'Rebona' in Purmerend city centre, the Netherlands (2015)[8]](//up.wiki.x.io/wikipedia/commons/thumb/3/31/Koemarkt_Purmerend_in_de_zomer.JPG/120px-Koemarkt_Purmerend_in_de_zomer.JPG)
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'Rebona' in spring, Treskowstrasse, Berlin-Heinersdorf (2012) -
!['Rebona' lining Utrechtsebaan, The Hague (September 2023)[8]](//up.wiki.x.io/wikipedia/commons/thumb/9/9d/A-12_buses_used_for_transport_20230909.jpg/120px-A-12_buses_used_for_transport_20230909.jpg)
'Rebona' lining Utrechtsebaan, The Hague (September 2023)[8] -
!['New Horizon' and 'Rebona' alternating in the Wilhelminaplein, Naaldwijk (2019)[9][10]](//up.wiki.x.io/wikipedia/commons/thumb/f/f9/Wilhelminaplein_Naaldwijk_2019.jpg/120px-Wilhelminaplein_Naaldwijk_2019.jpg)
![Lines of 'Rebona' in Purmerend city centre, the Netherlands (2015)[8]](/wiki/File:Koemarkt_Purmerend_in_de_zomer.JPG)
!['Rebona' lining Utrechtsebaan, The Hague (September 2023)[8]](/wiki/File:A-12_buses_used_for_transport_20230909.jpg)
!['New Horizon' and 'Rebona' alternating in the Wilhelminaplein, Naaldwijk (2019)[9][10]](/wiki/File:Wilhelminaplein_Naaldwijk_2019.jpg)
Synonymy
edit- 'Rebone' [1]
Accessions
editEurope
edit- Botanischer Garten Marburg, Marburg, Germany. No details available.
- Grange Farm Arboretum, Lincolnshire, UK. Acc. no. not known.
- Royal Botanic Gardens, Kew, UK. Acc. no. not known.
- Sir Harold Hillier Gardens, Romsey, UK. One tree planted Crookhill overflow parking area. Acc. no. 2018.0019
Nurseries
editEurope
editReferences
edit- ^ a b Santamour, Frank S.; Bentz, Susan E. (May 1995). "Updated Checklist of Elm (Ulmus) Cultivars for use in North America". Journal of Arboriculture. 21 (3): 122–131. Retrieved 20 June 2016.
- ^ Resista elms, resista-ulmen.com
- ^ a b Ulmus 'Rebona', resista-ulmen.com
- ^ a b 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. ISBN 978 90 5011 281 9
- ^ Ulmus 'Rebona', ulmen-handbuch.de
- ^ Philipp Schönfeld, Ulmus 'Rebona', gartenpraxis.de/aktuelles/news/ulme-rebona; 30 October 2023
- ^ Brookes, A. H. (2020). Disease-resistant elm cultivars. Butterfly Conservation, Lulworth, England. [1]
- ^ a b 'Rebona' photos on noordplant.nl
- ^ Jolanda Faber, 'Regional history: Trees on Wilhelminaplein', 2016
- ^ 'For public spaces in Naaldwijk'; Naaldwijk-wilhelminaplein-19-juli-2016-vo-openbare-ruimte
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