Ulmus 'Rugosa'

Ulmus
Cultivar 'Rugosa'
Origin Späth nursery, Berlin, Germany

The elm cultivar Ulmus 'Rugosa' was distributed by the Späth nursery, Berlin, in the 1890s and early 1900s as U. campestris rugosa. It is not known whether herbarium leaf-specimens from the Wageningen Arboretum originally labelled U procera 'Rugosa' and renamed U. carpinifolia (1962) show Späth's tree,[1] or whether Späth's 'Rugosa' is related to one listed by Hartwig and Rümpler in Illustrirtes Gehölzbuch (1875) as Ulmus montana (:glabra) var. rugosa Hort..[2]

Späth's 'Rugosa' appears to be distinct from a cultivar or cultivars of the wych elm named 'Rugosa'.

Description

The U. campestris rugosa distributed by Späth was described as a corky field elm with branches standing out horizontally.[3]

Pests and diseases

Not known.

Cultivation

One specimen of Späth's U. campestris rugosa was planted in 1898 at the Dominion Arboretum, Ottowa, Canada;[4] given the two DED pandemics that have swept the North American continent in the 20th century, it is unlikely the tree still survives. Specimens supplied by the Späth nursery to the Royal Botanic Garden Edinburgh in 1902 as U. campestris rugosa may survive in Edinburgh as it was the practice of the Garden to distribute trees about the city (viz. the Wentworth Elm);[5] the current list of Living Accessions held in the Garden per se does not list the plant.[6] A semi-pendulous suckering elm (girth 3.5 m) in Buckingham Terrace Gardens, Edinburgh (2016), matching herbarium leaf-specimens of a cultivar formerly called U. procera 'Rugosa' (see External links below), may be an example. A second tree, the same clone and age, stands (2016) on Leith Links, opposite Vanburgh Terrace. A third specimen, of the same age, stands (2016) in Middle Meadows Walk; close-planted in a line of trees, its natural 'turtleback' shape does not appear.

Accessions

None known.

References

  1. ↑ "Herbarium specimen - L.1586827". Botany catalogues. Naturalis Biodiversity Center.
  2. ↑ Hartwig and Rümpler, Illustrirtes Gehölzbuch 583, 1875
  3. ↑ Katalog (PDF). 108. Berlin, Germany: L. Späth Baumschulenweg. 1902–1903. pp. 132–133.
  4. ↑ Catalogue of the trees and shrubs in the arboretum and botanic gardens at the central experimental farm (2 ed.). 1899. p. 75.
  5. ↑ Accessions book. Royal Botanic Garden Edinburgh. 1902. pp. 45,47.
  6. ↑ "List of Living Accessions: Ulmus". Royal Botanic Garden Edinburgh. Retrieved 21 September 2016.

External links

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