| Ulmus glabra 'Insularis' | |
|---|---|
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| Species | Ulmus glabra |
| Cultivar | 'Insularis' |
| Origin | Sweden |
ThecultivarUlmus glabra 'Insularis' [:'island'[2]], theVen island elm, a fastigiate form ofWych Elm from Sweden, was identified and described by Nilsson inLustgården 30: 127. 1949, asU. glabraHuds. f.insularis.[1][3] Nilsson considered it "closely related to subspeciesmontana(Stokes) Lindqvist". Thecultivar arose from a tree onVen island inÖresund sound, planted c.1900 between Haken and Husvik, possibly from self-sown local seedlings, and approaching 2 m in girth by the late 1940s.[1][4]
The tree was described by Nilsson as columnar, having a rounded elongate-ovoid crown, and dense sub-erect branches.[3] The relatively elongated leaves are widest above the middle, quite tapered towards a long tip, and tapering to an unsymmetrical base. The margin is triple-toothed.[1] New shoots are downy. Flowers and fruits as in the type. Nilsson (1949) included photographs of the original tree in winter and summer, and a leaves photo.[1]
See underUlmus glabra.
The horticultural potential of the tree was early recognized and propagation was already under way in Sweden when Nilsson published his 1949 article.[1] The tree was sometimes planted in botanical collections.[5]Krüssmann (1984) contains a photograph of a young specimen in theWageningen Arboretum in the Netherlands.[6]
A narrow 'Insularis'-like wych elm that stands before Wright's Houses,Bruntsfield Links, Edinburgh (2018), may pre-date the cultivation of the Swedish clone.[7] Despite being an unpollarded open-grown tree, its branches are mostly steeply ascending. Leaves andsamarae are typical of the species.