Ulmus × viminalis 'Pulverulenta'

Ulmus × viminalis
'Pulverulenta', Bedford, UK. 1991
Hybrid parentage	U. minor × U. minor 'Plotii'
Cultivar	'Pulverulenta'
Origin	Europe

Ulmus × viminalis Lodd. 'Pulverulenta' is a hybrid cultivar derived from the crossing Ulmus minor Mill. × U. minor 'Plotii' Druce. The tree was first mentioned by Dieck, (Zöschen, Germany) in Haupt-Catalog der Obst- und Gehölzbaumschulen des Ritterguts Zöschen bei Merseburg 1885, p. 82, as U. scabra viminalis pulverulenta Hort., but without description.

Description

Dippel , Illustriertes Handbuch der Laubholzkunde, 2:25, 1892 described it under the same name as having leaves streaked with both white and yellow.^[1]

• 
  'Pulverulenta' at Batsford Arborerum, November 2016
• 
  Bole of same
• 
  Leaves
• 
  Leaves, June 2014

Pests and diseases

'Pulverulenta' is very susceptible to Dutch elm disease.

Cultivation

Now extremely rare in cultivation, one tree grows at Batsford Arboretum, UK. ^[2] Three specimens supplied by the Späth nursery of Berlin to the Royal Botanic Garden Edinburgh in 1902 as U. campestris 'Viminalis marginata' [sic], shown by herbarium specimens (see External links below) to have been 'Pulverulenta' or 'Variegata', may survive in Edinburgh, as it was the practice of the Garden to distribute trees about the city (viz. the Wentworth Elm);^[3] the current list of Living Accessions held in the Garden per se does not list the plant.^[4]

Accessions

• Batsford Arboretum, Moreton-in-Marsh, UK. Listed as U. x viminalis 'Marginata', acc. no. 00/952/G2.

Synonymy

• Ulmus montana (: glabra) viminalis gracilis aurea Hort.: Schelle in Beissner et al. Handbuch der Laubholz-Benennung 84. 1903.
• Ulmus scabra (: glabra) viminalis fol. punctatis: Dieck, Haupt-catalog der Obst- und gehölzbaumschulen des ritterguts Zöschen bei Merseburg 1885, p. 82.

References

1. Green, Peter Shaw (1964). "Registration of cultivar names in Ulmus" (PDF). Arnoldia. Arnold Arboretum, Harvard University. 24 (6–8): 41–80. Retrieved 20 June 2016.
2. Johnson, O. (2011). Champion Trees of Britain & Ireland. Kew Publishing, Kew, London. ISBN 9781842464526.
3. Accessions book. Royal Botanic Garden Edinburgh. 1902. pp. 45,47.
4. "List of Living Accessions: Ulmus". Royal Botanic Garden Edinburgh. Retrieved 21 September 2016.

External Links

• "Herbarium specimen - L.1582432". Botany catalogues. Naturalis Biodiversity Center. Sheet incorrectly titled 'Marginata'
• "Herbarium specimen - WAG.1853169". Botany catalogues. Naturalis Biodiversity Center. Sheet labelled U. viminalis variegata; incorrectly relabelled 'Aurea'
• "Herbarium specimen - E00824794". Herbarium Catalogue. Royal Botanic Garden Edinburgh. Sheet incorrectly labelled U. campestris viminalis marginata, RBGE specimen from Späth nursery, 1902
• "Herbarium specimen - E00824795". Herbarium Catalogue. Royal Botanic Garden Edinburgh. Sheet incorrectly labelled U. campestris viminalis marginata, RBGE specimen from Späth nursery, 1902
• "Herbarium specimen - E00824793". Herbarium Catalogue. Royal Botanic Garden Edinburgh. Sheet labelled U. campestris viminalis variegata
• "Herbarium specimen - E00247719". Herbarium Catalogue. Royal Botanic Garden Edinburgh. Sheet labelled U. viminalis variegata (Specimen from Bath, 1926)