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Ulmus 'Crispa'
'Crispa', Serafimerparken, Stockholm, 2011
Genus	Ulmus
Cultivar	'Crispa'
Origin	Europe

The elm cultivar Ulmus 'Crispa' , sometimes known as the Fernleaf Elm, arose before 1800 and was first listed by Willdenow as U. crispa (1809). Audibert listed an U. campestris Linn. 'Crispa', orme à feuilles crépues , in 1817, and an Ulmus urticaefolia in 1832; the latter is usually taken to be a synonym. Loudon considered the tree a variety of U. montana (1838). In the 19th century, Ulmus × hollandica cultivars, as well as those of Wych Elm, were often grouped under Ulmus montana. Elwes and Henry (1913) listed 'Crispa' as a form of wych elm, but made no mention of the non-wych samara (see 'Description').

Hanham (1857) noted that in his day concave-leaved Field Elm, U. campestris concavaefolia, was frequently mistaken for and sold as 'Crispa' in nurseries, "though there is a wide difference between them". The Louis van Houtte nursery used the synonym Ulmus campestris adiantifolia for 'Crispa', and Ulmus campestris crispa for the cultivar 'Webbiana'. The Baudriller nursery of Angers went one step further, listing Ulmus campestris adiantifolia, orme à feuilles de capillaire , separately from both Ulmus campestris crispa, orme à feuilles crispées and Ulmus campestris webbiana, orme de Webb.

Koch, noting similarities between 'Crispa' and Ulmus montana rugosa, conjectured (1872) that the latter cultivar, which has "similar but less frizzy leaves", may have arisen from the former.

Description

'Crispa' is a slow-growing tree with pendulous branches bearing narrow, linear to oblanceolate leaves up to 9 cm long by 3.5 cm broad, distinctively wrinkled and with numerous incised curved teeth. Hanham (1857), concurring with Loudon (1838), described it as "generally of a slender and stunted habit of growth", and Henry (1913) as a small tree; mature specimens in Sweden, however, have attained a height comparable to the type. The seed is near the apex (margin) of the samara, confirmed from specimens in The Netherlands – a diagnostic feature which points to hybridity. The petiole is variable – short on thick twigs, but longer and unwych-like on more slender twigs. Arnold Arboretum, Massachusetts, described their specimen of 'Crispa' (1915) as "more curious than beautiful".

• 'Crispa' leaf
• Leaves of 'Crispa'
• Underside of 'Crispa' leaves

Pests and diseases

'Crispa' is susceptible to Dutch elm disease.

Cultivation

'Crispa' was once to be found in collections in Britain, including Kew, the Royal Botanic Garden Edinburgh, and the Royal Victoria Park, Bath. A specimen obtained from Späth as U. montana crispa and planted in 1916, stood in the Ryston Hall arboretum, Norfolk, in the early 20th century. The tree was propagated and marketed in the UK by the Hillier & Sons nursery, Winchester, Hampshire, from 1945, with just 12 sold in the period 1962 to 1977, when production ceased. Only one mature tree is now known to survive in the UK, at the Rosemoor Garden in Devon.

Specimens survive in Sweden (see 'Notable trees') and Latvia. As 'Crispa' was marketed in Poland in the 19th century by the Ulrich nursery, Warsaw, and by the Späth nursery of Berlin, other specimens may survive elsewhere in Eastern Europe. The Hesse Nursery of Weener, Germany, distributed the tree as U. campestris urticifolia Hort. in the 1930s. The tree remains in cultivation in Europe (see 'Nurseries').

The tree was introduced to the Dominion Arboretum, Ottawa, Canada in 1896 as U. montana crispa (syn. U. campestris urticaefolia). Ulmus crispa was distributed by Hovey's nursery of Boston, Massachusetts from the 1850s. 'Crispa' appeared as U. urticifolia, 'Nettle-leaved elm' with "undulating leaves", in Kelsey's 1904 catalogue, New York. It was listed by nurseries in Australia in the early 20th century, but there are no records of any survivors there.

Notable trees

Large specimens survive in Sweden, in Krusenburg near Uppsala, and in Stockholm (Hantverkargatan and two in Serafimerparken) (2017).

Varieties

• 'Crispa Aurea'
• 'Crispa Pendula'

Synonymy

• Ulmus urticaefolia: Audibert 1832 catalogue.
• Ulmus adiantifolia Hort.: Kirchner, in Petzold & Kirchner, Arboretum Muscaviense, 565, 1864. Name in synonymy.
• Ulmus campestris adiantifolia ?: Baudriller 1880 catalogue, Louis van Houtte 1881 catalogue.
• Ulmus campestris var. sublaciniatus: Mathieu, Flore générale de Belgique 1: 480, 1853..
• Ulmus montana filicifolia ?: Smith & Co., Worcester, 1887–88, Thompson & Watson: a wych elm cultivar with "dissected foliage"
• Ulmus campestris filicifolia ? :Louis van Houtte 1881 catalogue
• Ulmus asplenifolia: Bean (1936)

Accessions

Europe

• Grange Farm Arboretum, Lincolnshire, UK. Acc. no. 1069.
• Hortus Botanicus Nationalis, Salaspils, Latvia. Acc. no. 18101
• Linnaean Gardens of Uppsala, Sweden. Acc. no. 1996-1558
• Rosemoor Garden, Torrington, Devon, UK. One tree, in Lady Anne's Garden, planted 1976, 8 m high (2008) ; obtained from the D M van Gelderen nursery, Boskoop, Netherlands.
• Tallinn Botanic Garden, Estonia . No details available.
• Netherlands Plant Collection Ulmus, Wijdemeren, 3 planted as Ulmus glabra ‘Crispa’ 2021 Rading Loosdrecht and De Kwakel Kortenhoef obtained from Chris van der Wurff nursery, Netherlands.

Nurseries

• Arboretum Waasland Archived 2012-02-19 at the Wayback Machine, Nieuwkerken-Waas, Belgium.
• Centrum voor Botanische Verrijking vzw, Kampenhout, Belgium.
• Lønbæk Planteskole , Holstebro, Denmark.
• Kwekerij Arborealis , Wilhelminaoord, Netherlands.
• Szkółki Konieczko , Gogolin, Poland.

References

1. Lagerstedt, Lars (2014). "Märkesträd i Sverige - 10 Almar" [Notable trees in Sweden - 10 Elms] (PDF). Lustgården. 94: 55, 62, 71. Retrieved 15 May 2018.
2. Krüssmann, Gerd, Manual of Cultivated Broad-Leaved Trees & Shrubs (1984 vol. 3)
3. Willdenow, Carl Ludwig (1809). Enumeratio plantarum horti regii botanici Berolinensis. p. 295.
4. Audibert, U., Catalogue des végétaux de tous genres cultivés dans les jardins et pépinières à Tonelle (Tarascon, France, 1817) p.23 catalogue of 1817
5. ^ Catalogue des arbres, arbrisseaux, arbustes et plantes. Tonelle, France: Frères Audibert. 1832. p. 53.
6. ^ Green, Peter Shaw (1964). "Registration of cultivar names in Ulmus". Arnoldia. 24 (6–8). Arnold Arboretum, Harvard University: 41–80. Retrieved 16 February 2017.
7. Loudon, John Claudius (1838). Arboretum et fruticetum Britannicum. Vol. 3. p. 1399.
8. ^ Elwes, Henry John; Henry, Augustine (1913). The Trees of Great Britain & Ireland. Vol. 7. p. 1869.
9. Späth, L., Baumschulenweg Katalog (1903), p.131
10. ^ Saunders, William; Macoun, William Tyrrell (1899). Catalogue of the trees and shrubs in the arboretum and botanic gardens at the central experimental farm (2 ed.). Ottawa. pp. 74–75.
11. ^ Hanham, F. (1857). A Manual for the Park (Royal Victoria Park, Bath). Longman, London.
12. "Herbarium specimen - WAG.1846722". Botany catalogues. Naturalis Biodiversity Center. Sheet labelled Ulmus scabra var. adiantifolia
13. ^ Cultures de Louis van Houtte: Plantes Vivaces de Pleine Terre, Catalogue de Louis van Houtte, 1881-2, p.303
14. Baudriller Établissement d'Horticulture (1880). Catalogue général descriptif et raisonné des arbres fruitiers, forestiers & d'ornement cultivés dans l'établissement. Angers. p. 116.{{cite book}}: CS1 maint: location missing publisher (link)
15. Koch, Karl (1872). "Dendrologie; Bäume, Sträucher und Halbsträucher, welche in Mittel- und Nord- Europa im Freien kultivirt werden". Nature. 2 (44): 351–352. Bibcode:1870Natur...2..351O. doi:10.1038/002351a0. S2CID 12003546.
16. Bean, W. J. (1981). Trees and shrubs hardy in Great Britain, 7th edition. Murray, London.
17. "Herbarium specimen BR0000026205151V". Botanic Garden, Meise. Sheet labelled Ulmus effusa var. crispa, Jardin Botanique de Liège (C. Aigret; 1904)
18. "Herbarium specimen - E00824771". Herbarium Catalogue. Royal Botanic Garden Edinburgh. Ayrshire specimen in RBGE archive (1947)
19. Elwes, H. J. & Henry, A. (1913). The Trees of Great Britain & Ireland. Vol. VII.  p.1867. Private publication, Edinburgh. Archived 2008-10-05 at the Wayback Machine
20. tradgardsakademin.se/aktuella-uppdateringar/ulmus-glabra-crispa-rynkalm
21. "Herbarium specimen - E00824828". Herbarium Catalogue. Royal Botanic Garden Edinburgh. Labelled U. urticaefolia (1925)
22. ^ "Herbarium specimen - AMD.127087". Botany catalogues. Naturalis Biodiversity Center. Sheet labelled Ulmus crispa, Amsterdam specimen (1859); samarae and leaves
23. "Herbarium specimen - AMD.127086". Botany catalogues. Naturalis Biodiversity Center. Sheet labelled Ulmus crispa, Amsterdam specimen; samarae and leaves
24. *"Herbarium specimen - E00824770". Herbarium Catalogue. Royal Botanic Garden Edinburgh. Ayrshire specimen in RBGE archive (1947)
25. *"Herbarium specimen - E00824726". Herbarium Catalogue. Royal Botanic Garden Edinburgh. Kew specimen (1881)
26. Arnold Arboretum Bulletin of Popular Information, Vol.1 N.S., No.14, July 1915, p.55
27. Krüssman, Gerd, Manual of Cultivated Broad-Leaved Trees & Shrubs (1984 vol. 3); photo of RBGE 'Crispa'
28. rystonhall.co.uk/
29. Ryston Hall Arboretum catalogue. c. 1920. pp. 13–14.
30. Hillier & Sons (1977). Catalogue of Trees & Shrubs. Hillier, Ampfield, UK.
31. Hillier & Sons Sales inventory 1962 to 1977 (unpublished).
32. Ulrich, C. (1894), Katalog Drzew i Krezewow, C. Ulrich, Rok 1893–94, Warszawa
33. Katalog (PDF). Vol. 108. Berlin, Germany: L. Späth Baumschulenweg. 1902–1903. pp. 132–133.
34. Hesse, Hermann Albert (1933). Preis- und Sortenliste. pp. 91–92. Retrieved 27 February 2018.
35. Hovey & Co., Boston, Mass., Catalogue of ornamental trees & shrubs, evergreens and climbing plants, 1855, p.5
36. General catalogue, 1904 : choice hardy trees, shrubs, evergreens, roses, herbaceous plants, fruits, etc. New York: Frederick W. Kelsey. 1904. p. 18.
37. Spencer, R., Hawker, J. and Lumley, P. (1991). Elms in Australia. Australia: Royal Botanic Gardens, Melbourne. ISBN 0-7241-9962-4.
38. Photographs of mature specimen of U. 'Crispa' in Krusenburg near Uppsala, from tradgardsakademin.se, 'Crispa' (right) in Serafimerparken, Stockholm
39. "'Crispa', Serafimerparken, Stockholm". Google Maps. July 2017. Retrieved 2018-05-12.
40. kiki.huh.harvard.edu
41. kiki.huh.harvard.edu
42. Arboretum Muscaviense 566 (1864)
43. Baudriller Établissement d'Horticulture (1880). Catalogue général descriptif et raisonné des arbres fruitiers, forestiers & d'ornement cultivés dans l'établissement. Angers. p. 116.{{cite book}}: CS1 maint: location missing publisher (link)
44. 'Standard Ornamental Trees' in Forest, hardy ornamental trees, conifers, etc., Richard Smith & Co., Worcester, 1887–88, p.27
45. Robert Thompson & William Watson, The Gardener's Assistant (London 1901), p.324
46. Bean, W. J. (1936) Trees and shrubs hardy in Great Britain, 7th edition, Murray, London, vol. 2, p.616
47. Netherlands Plant Collection: Iepen, Ulmus
48. Centrum voor Botanische Verrijking vzw: Voorraadlijst, accessdate: November 2, 2016

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• Ulmus