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Ulmus pumila 'Aurescens'

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(Redirected from Ulmus 'Aurescens') Elm cultivar
Ulmus pumila 'Aurescens'
'Aurescens' spring foliage
SpeciesUlmus pumila
Cultivar'Aurescens'
OriginGermany

The Ulmus pumila cultivar 'Aurescens' was introduced by Georg Dieck at the National Arboretum, Zöschen, Germany, circa 1885. Dieck grew the tree from seed collected in the Ili valley, Turkestan (then a region of Russia, now part of Kazakhstan) by the lawyer and amateur naturalist Vladislav E. Niedzwiecki while in exile there. Dieck originally named the tree U. pinnato-ramosa f. aurescens.

Description

'Aurescens' is distinguished by its golden leaves on emergent shoots in spring; the foliage reverts to dark green by summer.

  • Leaf, in September Leaf, in September
  • Bute Park tree in spring Bute Park tree in spring
  • Bute Park tree in winter Bute Park tree in winter

Pests and diseases

This cultivar has not been scientifically tested for Dutch elm disease resistance, however several old specimens have survived unscathed by the disease in the UK. (see Notable trees).

Cultivation

The tree is rare in Europe and unknown in North America and Australasia. In trials in England, it quickly perished where grown on winter-waterlogged ground.

Notable trees

Two mature specimens are known in the UK: one at Bute Park Arboretum, Cardiff, planted c. 1980, height 15 m × 65 cm d.b.h. in 2004; another grows in a private garden at Seaford, East Sussex (see Accessions).

Accessions

Europe

Nurseries

Europe

References

  1. ^ Dieck, G. (1894). Neuheiten-Offerten des National-Arboretums zu Zöschen bei Merseburg, 1894/95.
  2. 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
  3. Green, Peter Shaw (1964). "Registration of cultivar names in Ulmus". Arnoldia. 24 (6–8). Arnold Arboretum, Harvard University: 41–80. Retrieved 16 February 2017.
  4. Brookes, A. H. (2015). Great Fontley Elm Trial, 2015 Report. Butterfly Conservation, Lulworth, UK.
  5. Johnson, O. (ed.). (2011). Champion Trees of Britain & Ireland. p. 171. Royal Botanic Gardens, Kew, London. ISBN 978-1842464526
  6. "List of plants in the {elm} collection". Brighton & Hove City Council. Retrieved 23 September 2016.
Elm species, varieties, hybrids, hybrid cultivars and species cultivars
Species, varieties and subspecies
Disputed species, varieties and subspecies
Hybrids
Species cultivars
American elm
Cedar elm
Chinese elm
European white elm
Field elm
Japanese elm
Siberian elm
Winged elm
Wych elm
Hybrid cultivars
Dutch elm
U. × intermedia
Unconfirmed derivation cultivars
Fossil elms


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