Ulmus × hollandica 'Viscosa'

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Ulmus × hollandica
Hybrid parentage U. glabra × U. minor
Cultivar 'Viscosa'
Origin Europe

The hybrid elm Ulmus × hollandica 'Viscosa' is probably one of a number of cultivars arising from the crossing of the Wych Elm U. glabra with a variety of Field Elm U. minor. The tree was listed by Loddiges, (Hackney, London) in his catalogue of 1836 and two years later by Loudon in Arboretum et Fruticetum Britannicum 3: 1378, 1838, as U. viscosa. An early specimen in the Herbarium Dumortier named U. viscosa Audibert was later sunk by Melville as U. × hollandica.[1]

Description[edit]

'Viscosa' was distinguished by its large, deep-green leaves with anthocyanin pigment.[2]

Cultivation[edit]

No specimens are known to survive in Europe.

Synonymy[edit]

  • Ulmus viscosa: Loddiges, and Loudon (see text).

Notable trees[edit]

An example stands in Portland, Oregon, USA.[citation needed]

References[edit]

  1. ^ Melville, R. (1978). On the discrimination of species in hybrid swarms with special reference to Ulmus and the nomenclature of U. minor (Mill.) and U. carpinifolia (Gled.). Taxon 27: 345–351.
  2. ^ Green, Peter Shaw (1964). "Registration of cultivar names in Ulmus". Arnoldia. Arnold Arboretum, Harvard University. 24 (6–8): 41–80. Retrieved 16 February 2017.