The

hybrid Hybrid may refer to: Science * Hybrid (biology), an offspring resulting from cross-breeding ** Hybrid grape, grape varieties produced by cross-breeding two ''Vitis'' species ** Hybridity, the property of a hybrid plant which is a union of two dif ...

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 ''Ulmus minor'' Mill., the field elm, is by far the most polymorphic of the European species, although its taxonomy remains a matter of contention. Its natural range is predominantly south European, extending to Asia Minor and Iran; its northern ...

''U. minor''. The tree was listed by Loddiges, ( Hackney, London) in his catalogue of 1836 and two years later by Loudon i
''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''.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.

Description

'Viscosa' was distinguished by its large, deep-green leaves with

anthocyanin Anthocyanins (), also called anthocyans, are water-soluble vacuolar pigments that, depending on their pH, may appear red, purple, blue, or black. In 1835, the German pharmacist Ludwig Clamor Marquart gave the name Anthokyan to a chemical compo ...

pigment.

Cultivation

No specimens are known to survive in Europe.

Synonymy

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

References

{{DEFAULTSORT:Ulmus x hollandica 'Viscosa' Dutch elm cultivar Ulmus articles missing images Ulmus Missing elm cultivars