From Wikipedia, the free encyclopedia
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- ^ Afzelius, Petrus Conrad (1844). Novitiae florae Gotlandicae (PDF). Upsala. p. 9. Retrieved 14 February 2018.
- ^ Johansson, K. (1921). "Bidrag till kännedom om Gottlands Ulmus-former" [Contribution to knowledge of Gottland's Ulmus forms]. Svensk botanisk tidskrift. 15 (1): 9. Retrieved 14 February 2018.
- ^ Johansson, K. (1924). "Om vära almar" [About our elms] (PDF). Lustgården. 5: 62. Retrieved 13 February 2018.
- ^ Nicholson, George (1896). Hand-list of trees and shrub. Vol. 2. p. 135.
- ^ Lagerstedt, Lars (2014). "Märkesträd i Sverige - 10 Almar" [Notable trees in Sweden - 10 Elms] (PDF). Lustgården. 94: 53–78. Retrieved 15 May 2018.
- ^ Williams, John (October 1953). "Edward Bausch and the Downton Elm". Bulletin of the Rochester Museum of Arts and Sciences. 26 (8): 126–127.
- ^ "Ulmus alata 'Lace Parasol'". JC Raulston Arboretum. Retrieved 2018-08-01.
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- ^ "Ulmus parvifolia 'Emer II' Allee". JC Raulston Arboretum. Retrieved 2018-08-01.
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- ^ "Little leaf lacebark elm 'athena', fall color". JC Raulston Arboretum. Retrieved 2018-08-01.
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- ^ Catalogue of trees & shrubs. T & S 100. Winchester, England: Hillier and sons. 1964. pp. 158–159.
- ^ Catalogue des cultures de Ad. Papet eu, pépiniériste, a Wetteren (Automne 1851 et Printemps 1852 ed.). Wetteren. 1851. p. 36. Retrieved 22 October 2018.
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