Ulmus × hollandica 'Dauvessei'
| Ulmus × hollandica 'Dauvessei' | |
|---|---|
| Hybrid parentage | U. glabra × U. minor |
| Cultivar | 'Dauvessei' |
| Origin | France[1] |
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 Orléans, France before 1877.[1][2]
Description
The branches ascend to form a broad, pyramidal crown; the leaves bear a vague resemblance to Wych Elm, but are generally smaller, rarely exceeding 10 cm long by 5 cm wide, thinner in texture,[3] and with base more oblique.[2] The US National Arboretum described specimens 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.[4]
Pests and diseases
The tree is susceptible to Dutch elm disease.
Cultivation
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).[5] In the United States specimens stood along The Mall in Washington D.C. among American Elms on either side of the Reflecting Pool (2009),[6][7] but it is not known whether any survive. 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.[8]
Putative specimens
In the UK a broad pyramidal tree matching 'Dauvessei' descriptions[5][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.[9][10]
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Seafield Place elm -
Bole of same -
Leaves of same, August -
Foliage, October -
Samarae of same -
Same, spring
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Hybrid cultivars
'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.[11]
Synonymy
- Ulmus campestris var. Dauvessi Hort.: Lavallée [1], Arboretum Segrezianum 235, 1877.
- Ulmus montana var. Dauvessei: Nicholson, Kew Hand-List Trees and Shrubs, 2: 139, 1896.
References
- ^ a b Jacobson, Arthur Lee (1996). North American Landscape Trees. p. 655.
- ^ a b c Krüssman, Gerd (1984). Manual of Cultivated Broad-Leaved Trees & Shrubs. Vol. 3. p. 410.
- ^ Green, Peter Shaw (1964). "Registration of cultivar names in Ulmus". Arnoldia. 24 (6–8). Arnold Arboretum, Harvard University: 41–80. Retrieved 16 February 2017.
- ^ Label of herbarium specimen WAG.1847155, Botany Catalogues, Naturalis Biodiversity Center. West Potomac Park specimen, Washington, D.C.
- ^ a b Elwes, Henry John; Henry, Augustine (1913). The Trees of Great Britain & Ireland. Vol. 7. p. 1874. Republished 2004 Cambridge University Press, ISBN 9781108069380
- ^ Sherald, James L., 'Elms of the Monumental Core' (Washington D.C.), National Park Service (2009), p.7
- ^ bioportal.naturalis.nl, specimen WAG.1847155
- ^ 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
- ^ 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.
External links
- "Herbarium specimen - WAG.1847155". Botany catalogues. Naturalis Biodiversity Center. West Potomac Park specimen, Washington, D.C.
- "Herbarium specimen - L.1587067". Botany catalogues. Naturalis Biodiversity Center.