Ulmus minor 'Umbraculifera Gracilis'
Ulmus minor 'Umbraculifera Gracilis' | |
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![]() 'Umbraculifera Gracilis', Royal Botanic Gardens, Edinburgh | |
Species | Ulmus minor |
Cultivar | 'Umbraculifera Gracilis' |
Origin | Späth nursery, Berlin, Germany |
The Field Elm cultivar Ulmus minor 'Umbraculifera Gracilis' was obtained as a sport of 'Umbraculifera' by the Späth nursery of Berlin c.1897.[1][2][3] It was marketed by the Späth nursery in the early 20th century,[4] and by the Hesse Nursery of Weener, Germany, in the 1930s.[5]
Description
[edit]The tree is distinguished by its long oval crown,[2][6] but with thinner branches and smaller leaves than 'Umbraculifera'.[7][8]
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'Umbraculifera Gracilis', Bruntsfield Links, Edinburgh (1989)
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'Umbraculifera Gracilis', winter, Royal Botanic Garden, Edinburgh
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Foliage, RBGE, October
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Pressed leaves of Bruntsfield Links specimen
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Bole, RBGE, showing graft-mark bottom right
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Trunk and branching of Bruntsfield Links tree
Pests and diseases
[edit]The cultivar is susceptible to Dutch elm disease.
Cultivation
[edit]The only known surviving specimens are in the United States and Scotland (see 'Accessions' and 'Notable trees'). Henry (1913) mentions no example at Kew,[2] though a specimen had been planted there by 1902.[9] A specimen obtained from Späth stood in the Ryston Hall arboretum, Norfolk,[10] in the early 20th century.[11] 'Umbraculifera Gracilis' has been included in the propagation programme (2017) of Royal Botanic Garden Edinburgh.[12]
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'Umbraculifera Gracilis', Bruntsfield Links, Edinburgh (April 2015)
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Same (October 2016)
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Bark and foliage of same
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Early autumn colour of same (2014)
Notable trees
[edit]Three trees supplied by Späth to the Royal Botanic Garden Edinburgh (RBGE) in 1902 as U. campestris umbraculifera gracilis[13][14] survive in Edinburgh (2019). The two oldest, planted in the Garden itself (one of which is base-grafted), were long known by an updated version of Melville's name for them, U. plotii × U. carpinifolia [15][16] (:U. minor 'Plotii' × U. minor).[17] It is known that Melville renamed some of Späth's trees at RBGE in 1958.[18] These two were, according to one RBGE herbarium sheet, formerly called U. campestris umbraculifera,[15] the name of the parent tree (not present in RBGE) of 'Umbraculifera Gracilis'. A herbarium specimen from Amsterdam labelled U. carpinifolia Gled. f. 'Gracilis' var. (Späth) Rehd. matches the Edinburgh trees.[19] Taken together, the evidence suggested that the three Edinburgh trees (the third, with smaller bole-girth, is on Bruntsfield Links) were the clone Späth supplied as U. campestris 'Umbraculifera Gracilis', an identification confirmed in 2016 by RBGE.[20] It is not known why Melville was permitted to disregard the trees' documented Central Asian provenance, and pronounce them hybrids of Plot Elm, a local variety of English field elm.
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The second, ungrafted, RBGE 'Umbraculifera Gracilis' (1989)
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Same (October 2016)
Synonymy
[edit]- Ulmus carpinifolia var. gracilis: Krüssmann [2], Handbuch der Laubgehölze 2: 534, 1962.
- Ulmus camp. umbraculifera nova[21]
Accessions
[edit]North America
[edit]- Holden Arboretum, US. Acc. no. 60-164
Europe
[edit]- Royal Botanic Garden Edinburgh, UK. Acc. nos. 19699358, 19699365
Nurseries
[edit]Europe
[edit]- Centrum voor Botanische Verrijking vzw, Kampenhout, Belgium. ('Umbraculifera' listed separately to 'Umbraculifera Gracilis').[22]
- Baumschulen Bauch GbR, Rheinbach, Germany. [23]
References
[edit]- ^ Späth, L., Catalogue 104 (1899–1900; Berlin), p.133
- ^ a b c Elwes, Henry John; Henry, Augustine (1913). The Trees of Great Britain & Ireland. Vol. 7. p. 1893.
- ^ kiki.huh.harvard.edu, [1]
- ^ Katalog (PDF). Vol. 108. Berlin, Germany: L. Späth Baumschulenweg. 1902–1903. pp. 132–133.
- ^ Hesse, Hermann Albert (1932). Preis- und Sortenliste. pp. 96–97. Retrieved 18 January 2018.
- ^ Green, Peter Shaw (1964). "Registration of cultivar names in Ulmus". Arnoldia. 24 (6–8). Arnold Arboretum, Harvard University: 41–80. Retrieved 16 February 2017.
- ^ Krüssmann, Johann Gerd (1984). Manual of Cultivated Broad-Leaved Trees and Shrubs. Vol. 3. p. 406.
- ^ "Herbarium specimen - WAG.1853132". Botany catalogues. Naturalis Biodiversity Center. Sheet described as U. carpinifolia Gled. f. 'Gracilis' var. (Späth) Rehd. (Amsterdam specimen)
- ^ Hand-list of trees and shrubs, excluding Coniferae, grown in Arboretum Kew Gardens (London, 1902), p.615
- ^ rystonhall.co.uk/
- ^ Ryston Hall Arboretum catalogue. c. 1920. pp. 13–14.
- ^ Dr Max Coleman, 'Strange fruit offer lifeline to rare elms', Royal Botanic Garden Edinburgh; stories.rbge.org.uk
- ^ Accessions book. Royal Botanic Garden Edinburgh. 1902. pp. 45, 47.
- ^ "Herbarium specimen - E00824851". Herbarium Catalogue. Royal Botanic Garden Edinburgh. Sheet described as U. campestris umbraculifera gracilis (RBGE specimen, 1902); "Herbarium specimen - E00824850". Herbarium Catalogue. Royal Botanic Garden Edinburgh. Sheet described as U. campestris umbraculifera gracilis (RBGE specimen, 1902); "Herbarium specimen - E00824849". Herbarium Catalogue. Royal Botanic Garden Edinburgh. Sheet described as U. campestris umbraculifera gracilis (RBGE specimen, 1902)
- ^ a b "Herbarium specimen - L.1586788". Botany catalogues. Naturalis Biodiversity Center. Sheet described as U. campestris umbraculifera (RBGE specimen C2717); renamed U. plotii × U. carpinifolia by Melville
- ^ "Herbarium specimen - L.1586789". Botany catalogues. Naturalis Biodiversity Center. Cultivar name not given (RBGE specimen C2714); renamed U. plotii × U. carpinifolia by Melville; "Herbarium specimen - E00824800". Herbarium Catalogue. Royal Botanic Garden Edinburgh. Cultivar name not given (RBGE specimen C2714); renamed U. plotii × U. carpinifolia by Melville
- ^ "Herbarium specimen - WAG.1853131". Botany catalogues. Naturalis Biodiversity Center. Sheet described as U. carpinifolia Gled. f. 'Gracilis' var. (Späth) Rehd. (Amsterdam specimen)
- ^ RBGE Cultivated Herbarium Accessions Book: October 1958 notes by Ronald Melville on elm specimens on Azalea Lawn
- ^ Other herbarium leaf-specimens labelled U. carpinifolia Gled. cv. 'Gracilis' var. Späth, however, from Haarlem and Dahlem, appear to show a clone different from the Amsterdam specimen: "Herbarium specimen - WAG.1853133". Botany catalogues. Naturalis Biodiversity Center. Sheet described as U. carpinifolia Gled. var. 'Gracilis' var. (Späth) Rehd.; formerly named U. scabra Mill. × U. campestris var. umbraculifera and as U. umbraculifera gracilis (Haarlem specimen); "Herbarium specimen - L.1586951". Botany catalogues. Naturalis Biodiversity Center. Sheet described as U. carpinifolia Gled. cv. 'Gracilis' var. Späth; formerly known as 'U. montana umbraculifera gracilis' (Dahlem Hortus specimen, 1925).
- ^ "List of Living Accessions: Ulmus". Royal Botanic Garden Edinburgh. Retrieved 21 September 2016.
- ^ Späth, F. (1896). "Einige neue und seltene gehölze der Späth'schen Baumschule". Mitteilungen der Deutschen dendrologischen gesellschaft. 5: 28. Retrieved 21 December 2016.
- ^ Centrum voor Botanische Verrijking vzw: Voorraadlijst, accessdate: November 2, 2016
- ^ Baumschulen Bauch GbR: Sortimentsliste 2016-17, accessdate: November 2, 2016