Higher classification Ulmus minor 'Plotii' | Rank Cultivar | |
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Hybrid parentage U. minor × U. minor 'Plotii' | ||
Ulmus × viminalis 'Incisa' (:'incised', the leaf) is believed to be a hybrid cultivar possibly derived from the crossing U. minor × U. minor 'Plotii'. It was listed as Ulmus campestris var. nuda subvar. incisa by Wesmael in 1863, and considered "possibly Ulmus × viminalis" by Green (1964).
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Description
'Incisa' has leaves irregularly sinuate-incised, with long pointed teeth.
Pests and diseases
Trees of the U. × viminalis group are very susceptible to Dutch elm disease.
Cultivation
No specimens so labelled are known to survive. A cultivar that stands on Leith Links, Edinburgh (2016), with highly variable but often deeply incised small elliptic leaves, with sparse foliage, ascending branches and pendulous branchlets (all features of U. × viminalis), may be an example of 'Incisa'. It is known that specimens supplied by the Späth nursery to the Royal Botanic Garden Edinburgh in 1902 as U. campestris viminalis (or clones of the original batch) may survive in Edinburgh, as it was the practice of the Garden to distribute trees about the city (viz. the Wentworth Elm).