Ulmus glabra 'Nigra'

Ulmus glabra
Details
Cultivar	'Nigra'
Origin	Éire

The Wych Elm Ulmus glabra cultivar 'Nigra', the Black Irish Elm, was first mentioned by Loddiges, ex Loudon, in Arb. Frut. Brit. 3: 1898.^[1]

Description

The tree was said to have particularly deep-green leaves.

Cultivation

A possible specimen survives at Wakehurst Place in England, where it is kept cut low as part of a hedge to spare it the attentions of the bark beetles which act as vectors of Dutch elm disease. The tree is not known to have been introduced to North America or Australasia, nor is it known to be in commerce.

Pests and diseases

Susceptible to Dutch elm disease.

Synonymy

• Ulmus cinerea: Kirchner[2], in Petzold[3] & Kirchner, Arb. Muscav. 559, 1864, name in synonymy.
• ?Ulmus glabra 'Cinerea': RBG Electronic Plant Information Centre 2007.

Accessions

Europe

• ?Wakehurst Place, acc. no. 1973.21051, as U. glabra 'Cinerea'

References

1. ^ Green, P. S. (1964). Registration of cultivar names in Ulmus. Arnoldia, Vol. 24. Arnold Arboretum, Harvard University. [1]

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