Ulmus 'Exoniensis': Difference between revisions
Exeter elm seed is in typical position for wych, on stalk side of samara. No evidence of hybridisation in fruit. |
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{{Short description|Elm cultivar}} |
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{{Use dmy dates|date=April 2022}} |
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{{DISPLAYTITLE:''Ulmus'' 'Exoniensis'}} |
{{DISPLAYTITLE:''Ulmus'' 'Exoniensis'}} |
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{{Infobox Cultivar |
{{Infobox Cultivar |
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| origin = Exeter, England |
| origin = Exeter, England |
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}} |
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'''''Ulmus''''' ''''Exoniensis'''', the |
'''''Ulmus''''' ''''Exoniensis'''', the '''Exeter elm''', was discovered near [[Exeter]], [[England]], in 1826, and propagated by the Ford & Please nursery in that city.<ref name=Bean>Bean, W. J. (1981). ''Trees and shrubs hardy in Great Britain'', 7th edition. Murray, London</ref><ref name=Elwes>{{cite book|last1=Elwes|first1=Henry John|author-link1=Henry John Elwes|last2=Henry|first2=Augustine|author-link2=Augustine Henry|date=1913|title=The Trees of Great Britain & Ireland|volume=7|page=1866|url=https://archive.org/stream/treesofgreatbrit07elweuoft#page/1866/mode/2up}}</ref><ref name=Richens>Richens, R. H. (1983). ''Elm''. Cambridge University Press.</ref><ref name=White>White, J. & More, D. (2003). ''Trees of Britain and Northern Europe''. Cassell's, London.</ref><ref name = Harvey>Harvey, J. (1974). ''Early Nurserymen''. p.104. Phillimore & Co. Ltd. 1975. {{ISBN|978-0850331929}}</ref> Traditionally believed to be a [[cultivar]] of the Wych Elm [[Ulmus glabra|''U. glabra'']], its fastigiate shape when young, upward-curving tracery, small [[samara (fruit)|samarae]] and leaves, late leaf-flush and late leaf-fall, taken with its south-west England provenance, suggest a link with the [[Ulmus minor 'Stricta'|Cornish Elm]], which shares these characteristics. The seed, however, is on the stalk side of the [[samara (fruit)| samara]], a feature of wych elm and its cultivars, whereas in hybrids it would be displaced towards the notch.<ref>Coleman, Max, ed.: ''Wych Elm'' (Edinburgh, 2009)</ref><ref>[https://www.exetertrees.uk/exeter-elm.html Fruit of Exeter elm, exetertrees.uk]</ref> |
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==Description== |
==Description== |
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The tree initially has an upright, columnar form,<ref>[http://www.nrk.no/hage/%3Faction%3DBrowse%26typeId%3D4%26familyId%3D568 Photograph of fastigiate form of young Exeter elm]</ref> but later develops a large rounded crown and occasionally reaches 17 m in height. Older specimens may develop pendulous branches.<ref>Wilkinson, Gerald, ''Epitaph for the Elm'' (London 1978), p.62</ref> Exeter Elm is chiefly distinguished by its contorted leaves, < 11 cm long by 8 cm broad, rounder than the type [wych] and with more [[laciniate]] margins,<ref>Bean, W. J. (1936) ''Trees and shrubs hardy in Great Britain'', 7th edition, Murray, London, vol. 2, p.617</ref> which occasionally wrap around the branchlets and remain thus well into winter.<ref>[http://www.florapictures.com/photodetail.php?dir=2&photocount=3&plants=ULGEXONI&photoid=1002227800 Photograph of 'Exoniensis' leaves in early summer]</ref> 'Exoniensis' is often pollarded to produce a denser, fan-shaped crown (see main picture). |
The tree initially has an upright, columnar form,<ref>[http://www.nrk.no/hage/%3Faction%3DBrowse%26typeId%3D4%26familyId%3D568 Photograph of fastigiate form of young Exeter elm]</ref> but later develops a large rounded crown and occasionally reaches 17 m in height. Older specimens may develop pendulous branches.<ref>Wilkinson, Gerald, ''Epitaph for the Elm'' (London 1978), p.62</ref> Exeter Elm is chiefly distinguished by its contorted leaves, < 11 cm long by 8 cm broad, rounder than the type [wych] and with more [[laciniate]] margins,<ref>Bean, W. J. (1936) ''Trees and shrubs hardy in Great Britain'', 7th edition, Murray, London, vol. 2, p.617</ref><ref name = "Frenchname">[https://science.mnhn.fr/institution/mnhn/collection/p/item/p06883092 "Muséum national d'histoire naturelle, spécimen P06883092"] Two clones, (left) ''U. exoniensis'' (misnamed "U. oxoniensis" in France in 19th century), (right) ''U. pyramidata'' (1863)</ref> which occasionally wrap around the branchlets and remain thus well into winter.<ref>[http://www.florapictures.com/photodetail.php?dir=2&photocount=3&plants=ULGEXONI&photoid=1002227800 Photograph of 'Exoniensis' leaves in early summer]</ref> 'Exoniensis' is often pollarded to produce a denser, fan-shaped crown (see main picture). |
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<gallery> |
<gallery> |
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File:Ulmus 'Exoniensis' samarae. Bruntsfield Links, Edinburgh.jpg|'Exoniensis' samarae |
File:Ulmus 'Exoniensis' samarae. Bruntsfield Links, Edinburgh.jpg|'Exoniensis' samarae |
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File:Ulmus 'Exoniensis'. Lochend House adjoining Lochend Park, Edinburgh (2).jpg|Bole of Exeter Elm |
File:Ulmus 'Exoniensis'. Lochend House adjoining Lochend Park, Edinburgh (2).jpg|Bole of Exeter Elm |
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File:Ulmus 'Exoniensis'. Lochend House adjoining Lochend Park, Edinburgh (1).jpg|Old unpollarded Exeter Elm, Lochend Park, Edinburgh, showing pendulous branch |
File:Ulmus 'Exoniensis'. Lochend House adjoining Lochend Park, Edinburgh (1).jpg|Old unpollarded Exeter Elm, Lochend Park, Edinburgh, showing pendulous branch |
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Image:Ulmus glabra 'Exoniensis' grafted on Ulmus minor.jpg|'Exoniensis' scion grafted on ''U. minor'' stock |
Image:Ulmus glabra 'Exoniensis' grafted on Ulmus minor.jpg|'Exoniensis' scion grafted on ''U. minor'' stock |
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</gallery> |
</gallery> |
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==Pests and diseases== |
==Pests and diseases== |
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[[Auguste Chevalier|Chevalier]] noted (1942) that ''Ulmus montana fastigiata'' (Exeter Elm) was one of four European cultivars found by researchers in The Netherlands to have significant resistance to the earlier strain of [[Dutch elm disease]] prevalent in the 1920s and '30s, the others being [[Ulmus minor 'Monumentalis'|'Monumentalis' <small>Rinz</small>]], [[Ulmus 'Berardii'|'Berardii']] and [[Huntingdon Elm|'Vegeta']]. The four were rated less resistant than ''U. foliacea'' clone 23, from Spain, later cultivated as [[Ulmus minor 'Christine Buisman'|'Christine Buisman']].<ref name=revue>{{cite journal |date=1942 |title=Les Ormes de France|journal= Revue de botanique appliquée et d'agriculture coloniale|volume=22|number=254|pages=441|url=http://www.persee.fr/docAsPDF/jatba_0370-3681_1942_num_22_254_1721.pdf}}</ref> 'Exoniensis' possesses a moderate resistance to the more virulent strain of |
[[Auguste Chevalier|Chevalier]] noted (1942) that ''Ulmus montana fastigiata'' (Exeter Elm) was one of four European cultivars found by researchers in The Netherlands to have significant resistance to the earlier strain of [[Dutch elm disease]] prevalent in the 1920s and '30s, the others being [[Ulmus minor 'Monumentalis'|'Monumentalis' <small>Rinz</small>]], [[Ulmus 'Berardii'|'Berardii']] and [[Huntingdon Elm|'Vegeta']]. The four were rated less resistant than ''U. foliacea'' clone 23, from Spain, later cultivated as [[Ulmus minor 'Christine Buisman'|''U. minor'' 'Christine Buisman']].<ref name=revue>{{cite journal |date=1942 |title=Les Ormes de France|journal= Revue de botanique appliquée et d'agriculture coloniale|volume=22|number=254|pages=441|url=http://www.persee.fr/docAsPDF/jatba_0370-3681_1942_num_22_254_1721.pdf}}</ref> 'Exoniensis' possesses a moderate resistance to the more virulent strain of [[Dutch elm disease]], and consequently often featured in the Dutch elm breeding programme in association with the Field Elm (''[[Ulmus minor|U. minor]]'') and Himalayan Elm (''[[Ulmus wallichiana|U. wallichiana]]'').<ref name=Heybroek>{{cite book|last1=Heybroek|first1=H.M.|editor1-last=Sticklen|editor1-first=Mariam B.|editor2-last=Sherald|editor2-first=James L.|title=Dutch Elm Disease Research|date=1993|publisher=Springer-Verlag|location=New York, USA|pages=16–25|access-date=26 October 2017|chapter=The Dutch Elm Breeding Program|chapter-url=https://books.google.com/books?id=avvxBwAAQBAJ&pg=PA16|isbn=978-1-4615-6874-2}}</ref> |
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==Cultivation== |
==Cultivation== |
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Once commonly planted in the |
Once commonly planted in the UK and parts of western Europe, 'Exoniensis' is also known to have been marketed in Poland in the 19th century by the Ulrich nursery,<ref name=Ulrich>Ulrich, C. (1894), ''Katalog Drzew i Krezewow, C. Ulrich'', Rok 1893–94, Warszawa</ref> [[Warsaw]], and remains in commerce there. The [[Späth nursery]] of Berlin cultivated the tree as ''U. montana fastigiata'' (''U. exoniensis'' <small>Hort.</small>) from the early 20th century.<ref name=spath1903>{{cite book |date=1902–1903|title=Katalog |publisher=L. Späth Baumschulenweg|location=Berlin, Germany|volume=108|pages=132–133 |url=https://commons.wikimedia.org/wiki/File:L._Sp%C3%A4th_Baumschulenweg_Katalog_1903_pages_131-133.pdf}}</ref> It is possible that three trees supplied by the [[Späth nursery]] to the [[Royal Botanic Garden Edinburgh]] in 1902 as ''U. montana fastigiata''<ref name=Edinburgh>{{cite book |date=1902|title=Accessions book|publisher=Royal Botanic Garden Edinburgh|pages=45,47 |url=https://commons.wikimedia.org/wiki/File:Royal_Botanic_Garden_Edinburgh._(1902)._Accessions_book_pages_45,47.jpg}}</ref> were Exeter Elm,<ref name=spath1903/> old specimens of which survive in [[Edinburgh]] (it was the practice of the Garden to distribute trees about the city).<ref name=Edinburgh/> In Sweden 'Exoniensis' is sometimes pruned from an early age to form a tidy cone-shaped tree called locally 'pyramidalm' (: pyramid elm - also one of Späth's names for 'Exoniensis').<ref>Photographs of 'Pyramidalm' and unpruned 'Exoniensis' in Sweden, www.tradgardsakademin.se [http://www.tradgardsakademin.se/aktuella-uppdateringar/ulmus-glabra-exoniensis-pyramidalm]</ref><ref name="Lustgarden94">{{cite journal|last1=Lagerstedt|first1=Lars|title=Märkesträd i Sverige - 10 Almar|journal=Lustgården|date=2014|volume=94|pages=63,73|url=http://www.dendrologerna.se/wp-content/uploads/2016/05/Lustgarden-2014.pdf#page=54|access-date=15 May 2018|trans-title=Notable trees in Sweden - 10 Elms}}</ref><ref>[http://www.dendrologerna.se/wp-content/uploads/2016/06/Lustgarden_arg093_2013_0001_index_optimerad_250_dpi.pdf Lars Lagerstedt, Pyramid Elm in ''Lustgarden'', 2013, p.40]</ref> It is found in Australia at the [[Ballarat Botanical Gardens]] where it is listed on the Significant Tree Register of the National Trust. An ''Ulmus plumosa'' (a synonym of 'Exoniensis' in continental Europe<ref name = devos1867>{{cite book |title= Beredeneerd woordenboek der voornaamste heesters en coniferen, in Nederland gekweekt|date=1867|last=De Vos|first =C.|location=Groningen|publisher=J. B. Wolters|pages=135 |url=https://archive.org/stream/beredeneerdwoord1867vosc#page/135/mode/2up}}</ref>), of "elegant and pyramidal shape" and "dark green foliage", appeared in the 1902 catalogue of the Bobbink and Atkins nursery, [[Rutherford, New Jersey]].<ref name=bobink>{{cite book |date=1902 |title=Bobbink and Atkins, Rutherford. N.J.|pages=51|url=https://archive.org/stream/CAT31285383#page/51/mode/2up}}</ref> |
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<gallery> |
<gallery> |
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File:Goteborg Tradgardsforeningen 2.jpg|'Pyramidalm' [:pyramid elm] (pruned 'Exoniensis'), [[Garden Society of Gothenburg]], Sweden (2014) |
File:Goteborg Tradgardsforeningen 2.jpg|'Pyramidalm' [:pyramid elm] (pruned 'Exoniensis'), [[Garden Society of Gothenburg]], Sweden (2014) |
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==Notable trees== |
==Notable trees== |
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[[William Jackson Bean|Bean]] (1936) noted a large old specimen, 12 feet in girth, in the garden of the Old Vicarage, [[Bitton]], Gloucestershire.<ref>Bean, W. J. (1936) ''Trees and shrubs hardy in Great Britain'', 7th edition, Murray, London, vol. 2, p.617</ref> A 180-year-old specimen in [[Hamburg]] has attained a height of 28 m and a trunk diameter of 1.45 m.<ref>''U. glabra'' 'Exoniensis', the "Planten un Blomen", Hamburg: from the ''Handbuch der Ulmengewächse'', [http://www.ulmen-handbuch.de/handbuch/ulmus/u_glabra_exoniensis.html]</ref> The UK [[Tree Register of the British Isles|TROBI]] Champion tree is in Scotland, at [[Baxter |
[[William Jackson Bean|Bean]] (1936) noted a large old specimen, 12 feet in girth, in the garden of the Old Vicarage, [[Bitton]], Gloucestershire.<ref>Bean, W. J. (1936) ''Trees and shrubs hardy in Great Britain'', 7th edition, Murray, London, vol. 2, p.617</ref> A 180-year-old specimen in [[Hamburg]] has attained a height of 28 m and a trunk diameter of 1.45 m.<ref>''U. glabra'' 'Exoniensis', the "Planten un Blomen", Hamburg: from the ''Handbuch der Ulmengewächse'', [http://www.ulmen-handbuch.de/handbuch/ulmus/u_glabra_exoniensis.html]</ref> The UK [[Tree Register of the British Isles|TROBI]] Champion tree is in Scotland, at [[Baxter Park]], [[Dundee]], measuring 15 m high by 103 cm [[diameter at breast height|d.b.h.]] in 2004.<ref name=Johnson>Johnson, O. (2011). ''Champion Trees of Britain & Ireland'', p. 169. Kew Publishing, Kew, London. {{ISBN|9781842464526}}.</ref> The cultivar is represented in Éire by a tree at [[Birr Castle]] (Mount Palmer), [[County Offaly]], with a [[d.b.h.]] of 29 cm when measured in 2002. |
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==Hybrid cultivars== |
==Hybrid cultivars== |
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[[Ulmus 'Clusius'|'Clusius']], [[Ulmus 'Columella'|'Columella']], [[Ulmus 'Dodoens'|'Dodoens']], [[Ulmus 'Lobel'|'Lobel']], [[Ulmus 'Plantyn'|'Plantyn']], [[Ulmus 'Nanguen' = Lutece|'Nanguen' = {{tdes|Lutèce|caps}} |
[[Ulmus 'Clusius'|'Clusius']], [[Ulmus 'Columella'|'Columella']], [[Ulmus 'Dodoens'|'Dodoens']], [[Ulmus 'Lobel'|'Lobel']], [[Ulmus 'Plantyn'|'Plantyn']], [[Ulmus 'Nanguen' = Lutece|'Nanguen' = {{tdes|Lutèce|caps}}]], [[Ulmus 'Wanoux' = Vada|'Wanoux' = {{tdes|Vada|caps}}]]. The cultivar 'Columella' features the same rough, rounded, contorted leaves, the result of a recessive gene inherited from the Exeter Elm. |
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'Exoniensis' also indirectly featured in the Italian elm breeding programme as an ancestor of 'Plantyn', which was crossed with clones of the [[Siberian Elm]] ''[[Ulmus pumila]]'' to produce the cultivars [[Ulmus 'Arno'|'Arno']], [[Ulmus 'Plinio'|'Plinio']], and [[Ulmus 'San Zanobi'|'San Zanobi']].<ref name="Santini,A">Santini A., Fagnani A., Ferrini F. & Mittempergher L., (2002) 'San Zanobi' and 'Plinio' elm trees. [http://www.cnr.it/istituti/ArticoliJCR.html?cds=064&id=3107] ''HortScience'' 37(7): |
'Exoniensis' also indirectly featured in the Italian elm breeding programme as an ancestor of 'Plantyn', which was crossed with clones of the [[Siberian Elm]] ''[[Ulmus pumila]]'' to produce the cultivars [[Ulmus 'Arno'|'Arno']], [[Ulmus 'Plinio'|'Plinio']], and [[Ulmus 'San Zanobi'|'San Zanobi']].<ref name="Santini,A">Santini A., Fagnani A., Ferrini F. & Mittempergher L., (2002) 'San Zanobi' and 'Plinio' elm trees. [http://www.cnr.it/istituti/ArticoliJCR.html?cds=064&id=3107] ''HortScience'' 37(7): 1139–1141. 2002. American Society for Horticultural Science, Alexandria, VA 22314, USA.</ref><ref name="Santini">Santini A., Fagnani A., Ferrini F., Mittempergher L., Brunetti M., Crivellaro A., Macchioni N., Elm breeding for DED resistance, the Italian clones and their wood properties. [http://www.inia.es/gcontrec/pub/179-184-(15)-Elm_breeding_1161943564468.pdf] {{Webarchive|url=https://web.archive.org/web/20071026213739/http://www.inia.es/gcontrec/pub/179-184-%2815%29-Elm_breeding_1161943564468.pdf |date=26 October 2007 }} ''Invest Agrar: Sist. Recur. For.'' (2004) 13 (1), 179–184. 2004</ref> |
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==Synonymy== |
==Synonymy== |
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<section begin=Synonymy /> |
<section begin=Synonymy /> |
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*''Ulmus campestris'' var. ''nuda'' subvar. ''fastigiata oxfortii'' <small>Hort. Vilv.</small>, probable misspelling. |
*''Ulmus campestris'' var. ''nuda'' subvar. ''fastigiata oxfortii'' <small>Hort. Vilv.</small>, probable misspelling. |
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*''Ulmus fordii'' <small>Hort.</small>: [[John Claudius Loudon|Loudon]], [https://archive.org/stream/arboretumetfruti03loudrich#page/1399/mode/1up ''Arboretum et Fruticetum Britannicum'', 3: 1399, 1838]. |
*''Ulmus fordii'' <small>Hort.</small>: [[John Claudius Loudon|Loudon]], [https://archive.org/stream/arboretumetfruti03loudrich#page/1399/mode/1up ''Arboretum et Fruticetum Britannicum'', 3: 1399, 1838]. |
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*''{{lang|la|Ulmus montana fastigiata}}'': [[John Claudius Loudon|Loudon]], [https://archive.org/stream/arboretumetfruti03loudrich#page/1399/mode/1up ''Arboretum et Fruticetum Britannicum'', 3: 1399, 1838]. |
*''{{lang|la|Ulmus montana fastigiata}}'': [[John Claudius Loudon|Loudon]], [https://archive.org/stream/arboretumetfruti03loudrich#page/1399/mode/1up ''Arboretum et Fruticetum Britannicum'', 3: 1399, 1838]. |
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*''Ulmus montana'' f. ''fastigiata plumosa'' <small>Hort.</small>: [[Ernst Schelle|Schelle]] in [[Ludwig Beissner|Beissner]] et al. [https://archive.org/stream/Laubholzbenennung1903/Laubholzbenennung#page/n46/mode/1up ''Handbuch der Laubholz-Benennung'' 85. 1903]. |
*''Ulmus montana'' f. ''fastigiata plumosa'' <small>Hort.</small>: [[Ernst Schelle|Schelle]] in [[Ludwig Beissner|Beissner]] et al. [https://archive.org/stream/Laubholzbenennung1903/Laubholzbenennung#page/n46/mode/1up ''Handbuch der Laubholz-Benennung'' 85. 1903]. |
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*''Ulmus plumosa'': [[Cornelis de Vos, botanist|C. de Vos]] [http://kiki.huh.harvard.edu/databases/botanist_search.php?id=71879],<ref name = devos1867b>{{cite book |title= Beredeneerd woordenboek der voornaamste heesters en coniferen, in Nederland gekweekt|date=1867|last=De Vos|first =C.|location=Groningen|publisher=J. B. Wolters|pages=136 |url=https://archive.org/stream/beredeneerdwoord1867vosc#page/136/mode/2up}}</ref> |
*''Ulmus plumosa'': [[Cornelis de Vos, botanist|C. de Vos]] [http://kiki.huh.harvard.edu/databases/botanist_search.php?id=71879],<ref name = devos1867b>{{cite book |title= Beredeneerd woordenboek der voornaamste heesters en coniferen, in Nederland gekweekt|date=1867|last=De Vos|first =C.|location=Groningen|publisher=J. B. Wolters|pages=136 |url=https://archive.org/stream/beredeneerdwoord1867vosc#page/136/mode/2up}}</ref> |
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*''Ulmus plumosa foliis variegatis'': [[Cornelis de Vos, botanist|C. de Vos]], ''Woordenboek'' 137, 1867. |
*''Ulmus plumosa foliis variegatis'': [[Cornelis de Vos, botanist|C. de Vos]], ''Woordenboek'' 137, 1867. |
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*''Ulmus suberosa oxoniensis'': [[Urbain Audibert|Audibert]], [[Tonelle]], [[Tarascon]], [[France]] Catalogue, 1832, probable misspelling. |
*''Ulmus suberosa oxoniensis'': [[Urbain Audibert|Audibert]], [[Tonelle]], [[Tarascon]], [[France]] Catalogue, 1832, probable misspelling.<ref name = "Frenchname"/> |
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*''Ulmus ?'' var. ''replicata'': [[William Masters (botanist)|Masters]], [https://books.google. |
*''Ulmus ?'' var. ''replicata'': [[William Masters (botanist)|Masters]], [https://books.google.com/books?id=SfdaAAAAQAAJ&pg=PA67 ''Hortus Duroverni'', 67, 1831], name in synonymy. |
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<section end=Synonymy /> |
<section end=Synonymy /> |
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;Europe |
;Europe |
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*[[Arboretum Trompenburg]] [http://www.trompenburg.nl/], Netherlands. No details available. |
*[[Arboretum Trompenburg]] [http://www.trompenburg.nl/], Netherlands. No details available. |
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*[[Brighton & Hove]] City Council, UK |
*[[Brighton & Hove]] City Council, UK. [[NCCPG]] Elm Collection.<ref name=Brighton>{{cite web|title=List of plants in the {elm} collection|publisher=Brighton & Hove City Council|access-date=23 September 2016|url=http://www.brighton-hove.gov.uk/content/leisure-and-libraries/parks-and-green-spaces/list-plants-collection}}</ref> A number of trees, large specimens at [[Stanmer Park]] Arboretum (1), Linkway Lodge, Hollingdean (40+), University of Sussex (3) and Whitehawk Way (2). |
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*[[Cambridge Botanic Garden]] [http://www.botanic.cam.ac.uk/], [[University of Cambridge]], UK. 1 tree, no accession details available. |
*[[Cambridge Botanic Garden]] [http://www.botanic.cam.ac.uk/], [[University of Cambridge]], UK. 1 tree, no accession details available. |
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*[[Dubrava Arboretum]], Lithuania. No details available. |
*[[Dubrava Arboretum]], Lithuania. No details available. |
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*Museum Castle Sypesteyn, Nieuw-Loosdrechtsedijk 150, Loosdrecht, (Wijdemeren, Netherlands) 3 mature trees planted in 1910. |
*Museum Castle Sypesteyn, Nieuw-Loosdrechtsedijk 150, Loosdrecht, (Wijdemeren, Netherlands) 3 mature trees planted in 1910. |
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*[[Royal Botanic Garden Edinburgh]], UK. Acc. no. 19699363. |
*[[Royal Botanic Garden Edinburgh]], UK. Acc. no. 19699363. |
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*[[Sir Harold Hillier Gardens]], UK. Acc. nos. 1977.6756, 1977.7086. |
*[[Sir Harold Hillier Gardens]], [[Romsey]], UK. Acc. nos. 1977.6756, 1977.7086. |
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*[[Tallinn]] Botanic Garden, Estonia [http://www.tba.ee/index.php?lang=eng]. No accession details available. |
*[[Tallinn]] Botanic Garden, Estonia [http://www.tba.ee/index.php?lang=eng]. No accession details available. |
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*[[University of Copenhagen]], Botanic Garden, Denmark. No details available. |
*[[University of Copenhagen]], Botanic Garden, Denmark. No details available. |
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* Netherlands Plant Collection Ulmus [[Wijdemeren]], 1 tree planted, 2021 Molenmeent [[Loosdrecht]]<ref>[https://wijdemeren.cobra360.nl/index.php?@iepen Netherlands Plant Collection: Iepen, ''Ulmus'']</ref> |
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;Australasia |
;Australasia |
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*Ballarat Botanical Gardens, Australia. Acc. details not known. |
*Ballarat Botanical Gardens, Australia. Acc. details not known. |
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==References== |
==References== |
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{{reflist}} |
{{reflist}} |
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==External links== |
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* {{Royal Botanic Garden Edinburgh |id=E00824874 }} Sheet originally labelled [[Ulmus 'Fastigiata Glabra'|''U. montana fastigiata glabra'']], probably an error for ''U. montana fastigiata'' ['Exoniensis'], from [[Späth nursery]], 1902 |
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* {{Royal Botanic Garden Edinburgh |id=E00824875 }} Sheet originally labelled [[Ulmus 'Fastigiata Glabra'|''U. montana fastigiata glabra'']], probably an error for ''U. montana fastigiata'' ['Exoniensis'], from [[Späth nursery]], 1902 |
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{{Elm species, varieties, hybrids, hybrid cultivars and species cultivars |state=collapsed}} |
{{Elm species, varieties, hybrids, hybrid cultivars and species cultivars |state=collapsed}} |
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[[Category: |
[[Category:Elm cultivars]] |
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[[Category:Ulmus articles with images]] |
[[Category:Ulmus articles with images]] |
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[[Category:Ulmus]] |
[[Category:Ulmus]] |
Latest revision as of 14:42, 24 February 2024
Ulmus 'Exoniensis' | |
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Genus | Ulmus |
Cultivar | 'Exoniensis' |
Origin | Exeter, England |
Ulmus 'Exoniensis', the Exeter elm, was discovered near Exeter, England, in 1826, and propagated by the Ford & Please nursery in that city.[1][2][3][4][5] Traditionally believed to be a cultivar of the Wych Elm U. glabra, its fastigiate shape when young, upward-curving tracery, small samarae and leaves, late leaf-flush and late leaf-fall, taken with its south-west England provenance, suggest a link with the Cornish Elm, which shares these characteristics. The seed, however, is on the stalk side of the samara, a feature of wych elm and its cultivars, whereas in hybrids it would be displaced towards the notch.[6][7]
Description
[edit]The tree initially has an upright, columnar form,[8] but later develops a large rounded crown and occasionally reaches 17 m in height. Older specimens may develop pendulous branches.[9] Exeter Elm is chiefly distinguished by its contorted leaves, < 11 cm long by 8 cm broad, rounder than the type [wych] and with more laciniate margins,[10][11] which occasionally wrap around the branchlets and remain thus well into winter.[12] 'Exoniensis' is often pollarded to produce a denser, fan-shaped crown (see main picture).
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'Exoniensis' samarae
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'Exoniensis' in April
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'Exoniensis' foliage
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Dried 'Exoniensis' leaves
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Bole of Exeter Elm
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Old unpollarded Exeter Elm, Lochend Park, Edinburgh, showing pendulous branch
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'Exoniensis' scion grafted on U. minor stock
Pests and diseases
[edit]Chevalier noted (1942) that Ulmus montana fastigiata (Exeter Elm) was one of four European cultivars found by researchers in The Netherlands to have significant resistance to the earlier strain of Dutch elm disease prevalent in the 1920s and '30s, the others being 'Monumentalis' Rinz, 'Berardii' and 'Vegeta'. The four were rated less resistant than U. foliacea clone 23, from Spain, later cultivated as U. minor 'Christine Buisman'.[13] 'Exoniensis' possesses a moderate resistance to the more virulent strain of Dutch elm disease, and consequently often featured in the Dutch elm breeding programme in association with the Field Elm (U. minor) and Himalayan Elm (U. wallichiana).[14]
Cultivation
[edit]Once commonly planted in the UK and parts of western Europe, 'Exoniensis' is also known to have been marketed in Poland in the 19th century by the Ulrich nursery,[15] Warsaw, and remains in commerce there. The Späth nursery of Berlin cultivated the tree as U. montana fastigiata (U. exoniensis Hort.) from the early 20th century.[16] It is possible that three trees supplied by the Späth nursery to the Royal Botanic Garden Edinburgh in 1902 as U. montana fastigiata[17] were Exeter Elm,[16] old specimens of which survive in Edinburgh (it was the practice of the Garden to distribute trees about the city).[17] In Sweden 'Exoniensis' is sometimes pruned from an early age to form a tidy cone-shaped tree called locally 'pyramidalm' (: pyramid elm - also one of Späth's names for 'Exoniensis').[18][19][20] It is found in Australia at the Ballarat Botanical Gardens where it is listed on the Significant Tree Register of the National Trust. An Ulmus plumosa (a synonym of 'Exoniensis' in continental Europe[21]), of "elegant and pyramidal shape" and "dark green foliage", appeared in the 1902 catalogue of the Bobbink and Atkins nursery, Rutherford, New Jersey.[22]
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'Pyramidalm' [:pyramid elm] (pruned 'Exoniensis'), Garden Society of Gothenburg, Sweden (2014)
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Same (1944)
Notable trees
[edit]Bean (1936) noted a large old specimen, 12 feet in girth, in the garden of the Old Vicarage, Bitton, Gloucestershire.[23] A 180-year-old specimen in Hamburg has attained a height of 28 m and a trunk diameter of 1.45 m.[24] The UK TROBI Champion tree is in Scotland, at Baxter Park, Dundee, measuring 15 m high by 103 cm d.b.h. in 2004.[25] The cultivar is represented in Éire by a tree at Birr Castle (Mount Palmer), County Offaly, with a d.b.h. of 29 cm when measured in 2002.
Hybrid cultivars
[edit]'Clusius', 'Columella', 'Dodoens', 'Lobel', 'Plantyn', 'Nanguen' = Lutèce, 'Wanoux' = Vada. The cultivar 'Columella' features the same rough, rounded, contorted leaves, the result of a recessive gene inherited from the Exeter Elm.
'Exoniensis' also indirectly featured in the Italian elm breeding programme as an ancestor of 'Plantyn', which was crossed with clones of the Siberian Elm Ulmus pumila to produce the cultivars 'Arno', 'Plinio', and 'San Zanobi'.[26][27]
Synonymy
[edit]- Ulmus campestris var. nuda subvar. fastigiata oxfortii Hort. Vilv., probable misspelling.
- Ulmus fordii Hort.: Loudon, Arboretum et Fruticetum Britannicum, 3: 1399, 1838.
- Ulmus montana fastigiata: Loudon, Arboretum et Fruticetum Britannicum, 3: 1399, 1838.
- Ulmus montana f. fastigiata plumosa Hort.: Schelle in Beissner et al. Handbuch der Laubholz-Benennung 85. 1903.
- Ulmus ontariensis Hort. ex. Steud.
- Ulmus plumosa: C. de Vos [5],[28]
- Ulmus plumosa foliis variegatis: C. de Vos, Woordenboek 137, 1867.
- Ulmus suberosa oxoniensis: Audibert, Tonelle, Tarascon, France Catalogue, 1832, probable misspelling.[11]
- Ulmus ? var. replicata: Masters, Hortus Duroverni, 67, 1831, name in synonymy.
Accessions
[edit]- Europe
- Arboretum Trompenburg [6], Netherlands. No details available.
- Brighton & Hove City Council, UK. NCCPG Elm Collection.[29] A number of trees, large specimens at Stanmer Park Arboretum (1), Linkway Lodge, Hollingdean (40+), University of Sussex (3) and Whitehawk Way (2).
- Cambridge Botanic Garden [7], University of Cambridge, UK. 1 tree, no accession details available.
- Dubrava Arboretum, Lithuania. No details available.
- Grange Farm Arboretum [8], Sutton St. James, Spalding, Lincs., UK. Acc. no. 829.
- Hortus Botanicus Nationalis, Salaspils, Latvia. Acc. nos. 18105,6,7.
- Linnaean Gardens of Uppsala, Sweden. Acc. no. 0000–1006.
- Museum Castle Sypesteyn, Nieuw-Loosdrechtsedijk 150, Loosdrecht, (Wijdemeren, Netherlands) 3 mature trees planted in 1910.
- Royal Botanic Garden Edinburgh, UK. Acc. no. 19699363.
- Sir Harold Hillier Gardens, Romsey, UK. Acc. nos. 1977.6756, 1977.7086.
- Tallinn Botanic Garden, Estonia [9]. No accession details available.
- University of Copenhagen, Botanic Garden, Denmark. No details available.
- Netherlands Plant Collection Ulmus Wijdemeren, 1 tree planted, 2021 Molenmeent Loosdrecht[30]
- Australasia
- Ballarat Botanical Gardens, Australia. Acc. details not known.
References
[edit]- ^ Bean, W. J. (1981). Trees and shrubs hardy in Great Britain, 7th edition. Murray, London
- ^ Elwes, Henry John; Henry, Augustine (1913). The Trees of Great Britain & Ireland. Vol. 7. p. 1866.
- ^ Richens, R. H. (1983). Elm. Cambridge University Press.
- ^ White, J. & More, D. (2003). Trees of Britain and Northern Europe. Cassell's, London.
- ^ Harvey, J. (1974). Early Nurserymen. p.104. Phillimore & Co. Ltd. 1975. ISBN 978-0850331929
- ^ Coleman, Max, ed.: Wych Elm (Edinburgh, 2009)
- ^ Fruit of Exeter elm, exetertrees.uk
- ^ Photograph of fastigiate form of young Exeter elm
- ^ Wilkinson, Gerald, Epitaph for the Elm (London 1978), p.62
- ^ Bean, W. J. (1936) Trees and shrubs hardy in Great Britain, 7th edition, Murray, London, vol. 2, p.617
- ^ a b "Muséum national d'histoire naturelle, spécimen P06883092" Two clones, (left) U. exoniensis (misnamed "U. oxoniensis" in France in 19th century), (right) U. pyramidata (1863)
- ^ Photograph of 'Exoniensis' leaves in early summer
- ^ "Les Ormes de France" (PDF). Revue de botanique appliquée et d'agriculture coloniale. 22 (254): 441. 1942.
- ^ Heybroek, H.M. (1993). "The Dutch Elm Breeding Program". In Sticklen, Mariam B.; Sherald, James L. (eds.). Dutch Elm Disease Research. New York, USA: Springer-Verlag. pp. 16–25. ISBN 978-1-4615-6874-2. Retrieved 26 October 2017.
- ^ Ulrich, C. (1894), Katalog Drzew i Krezewow, C. Ulrich, Rok 1893–94, Warszawa
- ^ a b Katalog (PDF). Vol. 108. Berlin, Germany: L. Späth Baumschulenweg. 1902–1903. pp. 132–133.
- ^ a b Accessions book. Royal Botanic Garden Edinburgh. 1902. pp. 45, 47.
- ^ Photographs of 'Pyramidalm' and unpruned 'Exoniensis' in Sweden, www.tradgardsakademin.se [1]
- ^ Lagerstedt, Lars (2014). "Märkesträd i Sverige - 10 Almar" [Notable trees in Sweden - 10 Elms] (PDF). Lustgården. 94: 63, 73. Retrieved 15 May 2018.
- ^ Lars Lagerstedt, Pyramid Elm in Lustgarden, 2013, p.40
- ^ De Vos, C. (1867). Beredeneerd woordenboek der voornaamste heesters en coniferen, in Nederland gekweekt. Groningen: J. B. Wolters. p. 135.
- ^ Bobbink and Atkins, Rutherford. N.J. 1902. p. 51.
- ^ Bean, W. J. (1936) Trees and shrubs hardy in Great Britain, 7th edition, Murray, London, vol. 2, p.617
- ^ U. glabra 'Exoniensis', the "Planten un Blomen", Hamburg: from the Handbuch der Ulmengewächse, [2]
- ^ Johnson, O. (2011). Champion Trees of Britain & Ireland, p. 169. Kew Publishing, Kew, London. ISBN 9781842464526.
- ^ Santini A., Fagnani A., Ferrini F. & Mittempergher L., (2002) 'San Zanobi' and 'Plinio' elm trees. [3] HortScience 37(7): 1139–1141. 2002. American Society for Horticultural Science, Alexandria, VA 22314, USA.
- ^ Santini A., Fagnani A., Ferrini F., Mittempergher L., Brunetti M., Crivellaro A., Macchioni N., Elm breeding for DED resistance, the Italian clones and their wood properties. [4] Archived 26 October 2007 at the Wayback Machine Invest Agrar: Sist. Recur. For. (2004) 13 (1), 179–184. 2004
- ^ De Vos, C. (1867). Beredeneerd woordenboek der voornaamste heesters en coniferen, in Nederland gekweekt. Groningen: J. B. Wolters. p. 136.
- ^ "List of plants in the {elm} collection". Brighton & Hove City Council. Retrieved 23 September 2016.
- ^ Netherlands Plant Collection: Iepen, Ulmus