Ulmus × hollandica 'Belgica' (English Wikipedia)

"Herbarium specimen - L.4223267". Botany catalogues. Naturalis Biodiversity Center. Sheet labelled Ulmus x hollandica 'Belgica', Achterhoek, 1958; "Herbarium specimen - WAG.1847177". Botany catalogues. Naturalis Biodiversity Center. Sheet labelled Ulmus x hollandica 'Belgica', Wageningen Arboretum, 1962; "Herbarium specimen - WAG.1847176". Botany catalogues. Naturalis Biodiversity Center. Sheet labelled Ulmus x hollandica 'Belgica', Wageningen Arboretum, 1962
"Herbarium specimen - WAG.1847173". Botany catalogues. Naturalis Biodiversity Center. Short shoots and samarae. Sheet labelled Ulmus x hollandica 'Belgica', Wageningen Arboretum, 1962

bomeninfo.nl

Photographs of Ulmus x hollandica 'Belgica' in Amsterdam [2] [3] and rural Holland [4] [5]
The Oudemanhuispoort elm in Amsterdam (photographs 8 and 9) [6] ; photograph of columnar bole of the Oudemanhuispoort elm (to right of entrance) [7]

Heybroek, H.M. (1993). "The Dutch Elm Breeding Program". In Sticklen, Mariam B.; Sherald, James L. (eds.). Dutch Elm Disease Research. New York, USA: Springer-Verlag. pp. 16–25. ISBN 978-1-4615-6874-2. Retrieved 26 October 2017.

"List of plants in the {elm} collection". Brighton & Hove City Council. Retrieved 23 September 2016.

Photographs of Ulmus x hollandica 'Belgica' in Amsterdam [2] [3] and rural Holland [4] [5]

Meulemans, M.; Parmentier, C. (1983). Burdekin, D.A. (ed.). "Studies on Ceratocystis ulmi in Belgium" (PDF). Forestry Commission Bulletin (Research on Dutch Elm Disease in Europe) (60). London: HMSO: 86–95.
Heybroek, Hans M. (1983). Burdekin, D.A. (ed.). "Resistant elms for Europe" (PDF). Forestry Commission Bulletin (Research on Dutch Elm Disease in Europe) (60). London: HMSO: 108–113.

The Oudemanhuispoort elm in Amsterdam (photographs 8 and 9) [6] ; photograph of columnar bole of the Oudemanhuispoort elm (to right of entrance) [7]

Photographs of Ulmus x hollandica 'Belgica' in Amsterdam [2] [3] and rural Holland [4] [5]

Buiteveld, J. et al. (2013). 'Comparison of commercial elm cultivars and promising unreleased Dutch clones for resistance to Ophiostoma novo-ulmi'. iForest8 (2015): 158-164. [1]