Ulmus alata (English Wikipedia)

Stritch, L. (2019) [amended version of 2019 assessment]. "Ulmus alata". IUCN Red List of Threatened Species. 2019: e.T61966604A180056609. Retrieved 12 April 2021.

jimbotany.com

Photo of U. alata samarae, jimbotany.com/16-Catalog_Ra_through_Z-Ackn-LitCitd.htm, [1]

"Trees: Ulmus alata". www.ces.ncsu.edu. Archived from the original on 3 August 2004.

Wilcox, Mike; Inglis, Chris (2003). "Auckland's elms" (PDF). Auckland Botanical Society Journal. 58 (1). Auckland Botanical Society: 38–45. Archived from the original (PDF) on 6 January 2015. Retrieved 22 February 2017.

Elwes, H. J. & Henry, A. (1913). The Trees of Great Britain & Ireland Archived 3 March 2016 at the Wayback Machine. Vol. VII. 1848–1929. Republished 2014 Cambridge University Press, ISBN 978-1-108-06938-0

Snow, G. A. "Ulmus alata Michx. Winged Elm". United States Department of Agriculture. Southern Research Station. Retrieved 2 February 2021.

"Trees: Ulmus alata". www.ces.ncsu.edu. Archived from the original on 3 August 2004.
Elwes, H. J. & Henry, A. (1913). The Trees of Great Britain & Ireland Archived 3 March 2016 at the Wayback Machine. Vol. VII. 1848–1929. Republished 2014 Cambridge University Press, ISBN 978-1-108-06938-0
Wilcox, Mike; Inglis, Chris (2003). "Auckland's elms" (PDF). Auckland Botanical Society Journal. 58 (1). Auckland Botanical Society: 38–45. Archived from the original (PDF) on 6 January 2015. Retrieved 22 February 2017.
Event listnativetreesociety.org Archived 3 March 2016 at the Wayback Machine
"BROOKLYN BOTANIC GARDEN >> Plant Records". www.bbg.org. Archived from the original on 30 April 2003.