The Siberian elm cultivar Ulmus pumila 'Hansen' is a little-known American tree of obscure origin, possibly raised from seed collected by the horticulturist and botanist Prof. Niels Hansen during his expedition to Siberia in 1897.[1]
Description
Very similar to the species.[2] A specimen planted in 1978 at the Sir Harold Hillier Gardens in England had attained a height of 8 m by 2002.
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Leaves of 'Hansen' -
'Hansen' at Hillier Arboretum
Cultivation
The tree's current status in North America is not known; at least three mature specimens survive in the UK. Significantly, it is not listed in Green's digest of elm cultivar names published in 1964, suggesting a rather belated introduction to commerce.[3]
Pests and diseases
See under Ulmus pumila.
Synonymy
- ?'Hansen's Hybrid': Jewell Nursery (ceased trading 2001), Lake City, Minnesota, United States. Wholesale Price List, Fall, 1968 - Spring 1969, p 6, described as "with larger leaf than Chinese (Elm)", but without provenance details.
Accessions
Europe
- Brighton & Hove City Council, UK, NCCPG Elm Collection.[4]
- Sir Harold Hillier Gardens, UK. Acc. no. 1978.1606
- Winkworth Arboretum, Surrey, UK. Tree planted 1975, plot K 37.
References
- ^ Hansen, N. How to produce that $1000 premium apple, in Minnesota State Hort. Soc. (1900). Trees, fruits & flowers of Minnesota. Vol. 28. 470-1. Forgotten Books, London, 2013. ISBN 9781153197953
- ^ Santamour, Frank S.; Bentz, Susan E. (May 1995). "Updated Checklist of Elm (Ulmus) Cultivars for use in North America". Journal of Arboriculture. 21 (3): 122–131. Retrieved 20 June 2016.
- ^ Green, Peter Shaw (1964). "Registration of cultivar names in Ulmus". Arnoldia. 24 (6–8). Arnold Arboretum, Harvard University: 41–80. Retrieved 16 February 2017.
- ^ "List of plants in the {elm} collection". Brighton & Hove City Council. Retrieved 23 September 2016.
This page was last edited on 17 April 2024, at 11:32