The hybrid elm cultivarUlmus × hollandica 'Dauvessei', one of a number of cultivars arising from the crossing of the Wych ElmU. glabra with a variety of Field ElmU. minor, is a very rare cultivar said to have originated at the D. Dauvesse nursery in Orléans, France before 1877.[1][2]
According to Henry's description (1913) based on a tree at Kew, the branches ascend to form a broad, pyramidal crown; the leaves bear a resemblance to Wych Elm, but are generally smaller, rarely exceeding 10 cm long by 5 cm wide, and thinner in texture, with petioles nearly 1 cm long.[3][4][5]Krüssmann added that the leaf-base was more oblique.[2]
The US National Arboretum, however, described the 'Dauvessei' that once grew in West Potomac Park, Washington, D.C., as similar in appearance to English Elm (in its lower latitude growth-form), forking at about 2 metres, reaching about 20 m tall by 18 m broad.[6] Herbarium specimens from the Washington trees show less elongated, rounder leaves than those at Kew, with fewer vein-pairs.[7]
There are no confirmed surviving specimens of 'Dauvessei'. A tree obtained from Lee of Hammersmith in 1879 grew at Kew Gardens, where it attained a height of 40 feet (12 m).[3] In the United States specimens stood along The Mall in Washington D.C. among American Elms on either side of the Reflecting Pool (2009),[8][9] but it is not known whether any survive. A 2018 Cornell University study of the National Mall elms found five possible Ulmus × hollandica there (cultivar unidentified).[10] A tree acquired from the Nobelius nursery in 1929 and grown at the University of Adelaide Waite Arboretum, Australia, died in 1997; Melville confirmed the 'Dauvessei' identification, reconfirmed by the arboretum in 1992.[11]
Putative specimenedit
In the UK a broad pyramidal tree matching 'Dauvessei' descriptions[3][2] and 'Dauvessei' herbarium material from a specimen in West Potomac Park, Washington, D.C., producing hybrid-type samarae, stands in the east corner of Claremont Park, Leith, by Seafield Place. Its location and tidy shape suggest a named cultivar.[12][13][14]
^Label of herbarium specimen WAG.1847155, Botany Catalogues, Naturalis Biodiversity Center. West Potomac Park specimen, Washington, D.C.
^"Herbarium specimen - WAG.1847155". Botany catalogues. Naturalis Biodiversity Center. West Potomac Park specimen 1, Washington, D.C. (1966); "Herbarium specimen HUDC00010315" Howard University Herbarium; West Potomac Park, specimen 2, Washington, D.C. (1966); "Herbarium specimen HUDC00010316 Howard University Herbarium; West Potomac Park, specimen 3, Washington, D.C. (1966); "Herbarium specimen - WAG.1847157". Botany catalogues. Naturalis Biodiversity Center. West Potomac Park samara specimen, Washington, D.C. (1966)
^Sherald, James L., 'Elms of the Monumental Core' (Washington D.C.), National Park Service (2009), p.7
^Went, J. A. (1954). The Dutch elm disease - Summary of 15 years' hybridisation and selection work (1937–1952). European Journal of Plant Pathology, Vol 60, 2, March 1954.
April 12, 2024
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The hybrid elm cultivar Ulmus hollandica Dauvessei one of a number of cultivars arising from the crossing of the Wych Elm U glabra with a variety of Field Elm U minor is a very rare cultivar said to have originated at the D Dauvesse nursery in Orleans France before 1877 1 2 Ulmus hollandica Dauvessei Hybrid parentageU glabra U minorCultivar Dauvessei OriginFrance 1 Contents 1 Description 2 Pests and diseases 3 Cultivation 3 1 Putative specimen 4 Hybrid cultivars 5 Synonymy 6 ReferencesDescription editAccording to Henry s description 1913 based on a tree at Kew the branches ascend to form a broad pyramidal crown the leaves bear a resemblance to Wych Elm but are generally smaller rarely exceeding 10 cm long by 5 cm wide and thinner in texture with petioles nearly 1 cm long 3 4 5 Krussmann added that the leaf base was more oblique 2 The US National Arboretum however described the Dauvessei that once grew in West Potomac Park Washington D C as similar in appearance to English Elm in its lower latitude growth form forking at about 2 metres reaching about 20 m tall by 18 m broad 6 Herbarium specimens from the Washington trees show less elongated rounder leaves than those at Kew with fewer vein pairs 7 Pests and diseases editThe tree is susceptible to Dutch elm disease Cultivation editThere are no confirmed surviving specimens of Dauvessei A tree obtained from Lee of Hammersmith in 1879 grew at Kew Gardens where it attained a height of 40 feet 12 m 3 In the United States specimens stood along The Mall in Washington D C among American Elms on either side of the Reflecting Pool 2009 8 9 but it is not known whether any survive A 2018 Cornell University study of the National Mall elms found five possible Ulmus hollandica there cultivar unidentified 10 A tree acquired from the Nobelius nursery in 1929 and grown at the University of Adelaide Waite Arboretum Australia died in 1997 Melville confirmed the Dauvessei identification reconfirmed by the arboretum in 1992 11 Putative specimen edit In the UK a broad pyramidal tree matching Dauvessei descriptions 3 2 and Dauvessei herbarium material from a specimen in West Potomac Park Washington D C producing hybrid type samarae stands in the east corner of Claremont Park Leith by Seafield Place Its location and tidy shape suggest a named cultivar 12 13 14 nbsp Seafield Place elm nbsp Bole of same nbsp Leaves of same August nbsp Foliage October nbsp Samarae of same nbsp Same springHybrid cultivars edit Dauvessei was crossed with Ulmus hollandica U glabra and U minor in the Dutch elm breeding programme before World War II but none of the progeny were of particular note and were discarded 15 Synonymy editUlmus campestris var Dauvessi Hort Lavallee 1 Arboretum Segrezianum 235 1877 Ulmus montana var Dauvessei Nicholson Kew Hand List Trees and Shrubs 2 139 1896 References edit a b Jacobson Arthur Lee 1996 North American Landscape Trees p 655 ISBN 9780898158137 a b c Krussman Gerd 1984 Manual of Cultivated Broad Leaved Trees amp Shrubs Vol 3 p 410 a b c Elwes Henry John Henry Augustine 1913 The Trees of Great Britain amp Ireland Vol 7 p 1874 Republished 2004 Cambridge University Press ISBN 9781108069380 Green Peter Shaw 1964 Registration of cultivar names in Ulmus Arnoldia 24 6 8 Arnold Arboretum Harvard University 41 80 Retrieved 16 February 2017 Herbarium specimen L 4214028 Botany catalogues Naturalis Biodiversity Center Labelled Ulmus dauvessei Kew Gardens specimen 1936 Herbarium specimen L 1587061 Botany catalogues Naturalis Biodiversity Center Labelled Ulmus hollandica nm dauvessei Henry type tree Kew Gardens specimen 1955 Label of herbarium specimen WAG 1847155 Botany Catalogues Naturalis Biodiversity Center West Potomac Park specimen Washington D C Herbarium specimen WAG 1847155 Botany catalogues Naturalis Biodiversity Center West Potomac Park specimen 1 Washington D C 1966 Herbarium specimen HUDC00010315 Howard University Herbarium West Potomac Park specimen 2 Washington D C 1966 Herbarium specimen HUDC00010316 Howard University Herbarium West Potomac Park specimen 3 Washington D C 1966 Herbarium specimen WAG 1847157 Botany catalogues Naturalis Biodiversity Center West Potomac Park samara specimen Washington D C 1966 Sherald James L Elms of the Monumental Core Washington D C National Park Service 2009 p 7 Herbarium specimen WAG 1847155 Botany catalogues Naturalis Biodiversity Center West Potomac Park specimen 1 Washington D C 1966 Bassuk Denig Harada Neal The state of the elms on the National Mall in Washington D C tree amp soil conditions 2018 hort cornell edu Information from Waite Arboretum 2018 on accession no 430 Ulmus hollandica Dauvessei Google Maps Seafield Pl Google Maps May 2015 accessdate August 19 2016 Google Maps Seafield Pl Google Maps July 2008 accessdate August 19 2016 Ulmus hollandica Dauvessei Conservation Foundation conservationfoundation co uk Went J A 1954 The Dutch elm disease Summary of 15 years hybridisation and selection work 1937 1952 European Journal of Plant Pathology Vol 60 2 March 1954 Retrieved from https en wikipedia org w index php title Ulmus hollandica 27Dauvessei 27 amp oldid 1195152604, wikipedia, wiki, book, books, library,
