Ulmus glabra 'Insularis'

Ulmus glabra
Cultivar 'Insularis'
Origin Sweden

The cultivar Ulmus glabra 'Insularis', a fastigiate form of Wych Elm, was identified by Nilsson in Lustgarten 30: 127. 1949, as f. insularis.[1] Krüssman noted that the cultivar arose in Sweden.[2]

Description

The tree was described by Nilsson as having a crown rounded elongate-ovoid, and dense, sub-erect branches.[3]

Pests and diseases

See under Ulmus glabra.

Cultivation

The tree was sometimes planted in botanical collections. Krüssman (1984) contains a photograph of a specimen in the Wageningen Arboretum in the Netherlands.[4]

Notable trees

Possible 'Insularis' (left), Bruntsfield Links, Edinburgh, 2010

Two possible mature specimens stood before Wright's Houses, Bruntsfield Links, Edinburgh (one survives, 2015).[5][6] Despite being unpollarded open-grown trees, their branches were mostly steeply ascending, the fastigiate tendency being noticeable also in branchlets. Leaves and samarae typical of the species. Their planting close to buildings suggests that the plantsmen were aware that the trees were not the broad spreading 'Scotch Elm' ubiquitous in the city.

References

  1. Green, P. S. (1964). Registration of cultivar names in Ulmus. Arnoldia, Vol. 24. Arnold Arboretum, Harvard University.
  2. Krüssman, Gerd, Manual of Cultivated Broad-Leaved Trees & Shrubs (1984 vol. 3)
  3. Green, P. S. (1964).
  4. Krüssman, Gerd, Manual of Cultivated Broad-Leaved Trees & Shrubs (1984 vol. 3, plate 145)
  5. Survivor visible on Google Streetview at 1 Wright's Houses; seen more clearly from Whitehouse Loan.
  6. Possible 'Insularis' on Bruntsfield Links (second tree from left; Huntingdon Elm on left for comparison): eyeonedinburgh.net
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