Ulmus alata

Description

As its common and scientific names imply, winged elm is most easily recognized by the very broad, thin pair of corky wings that form along the branchlets after a couple of years. The tree generally grows to a maximum height and breadth of about 13 ×, although on fertile alluvial soils such as those of the Mississippi River Delta, some specimens have reached double this height (see 'Notable trees' below). The crown can be either rounded or pyramidal; the branches are pendulous. The leaves are comparatively small for the genus, less than 6.5 cm long and less than 2.0 cm broad, oblong-lanceolate to narrowly elliptic, thin in texture, and smooth above with serrate or doubly serrate margins. The leaves turn bright yellow in Autumn. The wind-pollinated perfect apetalous flowers are borne on long pedicels in March and April before the leaves appear. The reddish samaras are also relatively small, less than 8 mm long, narrowly elliptic with two long incurving stigmas at the tip, and usually disperse before the end of April. File:Garden of the Gods - Winged Elm, Wahoo (Ulmus alata) - Flickr - Jay Sturner (1).jpg|Young Ulmus alata, showing corky bark-ridges File:Garden of the Gods - Winged Elm, Wahoo (Ulmus alata) - Flickr - Jay Sturner.jpg|Leaves of Ulmus alata File:Bulletin - United States National Museum (1953) (20507667055).jpg|Nest of prairie warbler in winged elm, Tennessee

Pests and diseases

Like the other North American species of elm, U. alata is very susceptible to Dutch elm disease and elm yellows (Elm phloem necrosis).

Cultivation

Ulmus alata is rarely cultivated beyond its natural range. It remains in commercial production in the US, and is occasionally available in Europe. At the beginning of the 19th century, the tree was one of the three American elm species cultivated in ornamental plantations in Britain, but is now rare there. Several specimens are grown in New Zealand.

Notable trees

On the silty uplands of the Mississippi Delta, Ulmus alata can attain 27 m (89 ft) in height, although the trunk diameter rarely exceeds 60 cm (24 in) d.b.h. In the old growth Fernbank Forest in Atlanta, Georgia, the species attains heights up to 39 m. A tree measuring 40 m high has been reported from the Congaree National Park in South Carolina. However, the USA National Champion, measuring 27 m high in 2009, grows in Hopewell, Virginia.

Cultivars

• Lace Parasol
• UAMTF =

Other uses

Ulmus alata is of minimal commercial significance, its hard timber considered no more remarkable than that of other American elms, and of limited use because of the commonly small size of the trees. However, owing to its resistance to splitting, it is used to make high-quality hockey sticks.

Accessions

;North America

• Arnold Arboretum, US. Acc. no. 404-95, wild collected.
• Bartlett Tree Experts, US. Acc. no. 1438, unrecorded provenance.
• Brooklyn Botanic Garden, New York City, US. Acc. nos. 730275, X00886
• Bernheim Arboretum and Research Forest Bernheim Arboretum and Research Forest - Connecting People with Nature , Clermont, Kentucky, US. No details available.
• Morton Arboretum, US. Acc. no. 116-96, wild collected Papoose Lake, Illinois. ;Europe
• Brighton & Hove City Council, UK. NCCPG Elm Collection. One tree at East Brighton Park, UK champion 13 m high, 31 cm d.b.h. in 2001.
• Grange Farm Arboretum, Lincolnshire, UK. Acc. no. 506
• Royal Botanic Garden Edinburgh, UK. Acc. no. 20080092, from seed wild collected in USA.
• Thenford House, Northamptonshire, UK. No details available. ;Australasia
• Manukau Cemetery & Crematorium, Auckland, New Zealand. No details available.

Nurseries

;North America Widely available. ;Europe

• Arboretum Waasland , Nieuwkerken-Waas, Belgium.
• Grange Farm Plants, Spalding, Lincolnshire, UK.
• Plantentuin Esveld, Netherlands.

Seed suppliers

• Sheffield's Seeds Co. Inc. , New York, US.

References

References

1. Stritch, L.. (2019). "Ulmus alata".
2. University of Florida, Environmental Horticulture Department (1994). ''Fact Sheet ST-648''. Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences.
3. ''Alata'' is [[Latin]] for "winged".
4. "Trees: Ulmus alata".
5. Photo of ''U. alata'' samarae, jimbotany.com/16-Catalog_Ra_through_Z-Ackn-LitCitd.htm, [http://jimbotany.com/ULMUALAT.JPG]
6. Elwes, H. J. & Henry, A. (1913). ''[http://fax.libs.uga.edu/QK488xE4/1f/trees_of_britain_and_ireland_vol_7.pdf The Trees of Great Britain & Ireland] {{Webarchive. link. (3 March 2016 ''. Vol. VII. 1848–1929. Republished 2014 Cambridge University Press, {{ISBN). 978-1-108-06938-0
7. Schnelle, M. (1999). Field Notes: Ulmus alata. ''American Nurseryman'', page 1998, 1 March 1999. p. 98. [[Chicago]]
8. "Elm Phloem Necrosis".
9. (1839). "The Forest Planter and Pruner's Assistant". Ridgway.
10. (2003). "Auckland's elms". Auckland Botanical Society.
11. [http://www.nativetreesociety.org/events/congaree2009/NewCongMaxList.xls Event list]nativetreesociety.org {{Webarchive. link. (3 March 2016)
12. American Forests. (2012). The 2012 National Register of Big Trees.
13. Dwayne C. Moon, ''Ulmus alata'' 'UAMTF' description: [https://patents.justia.com/patent/20190069459 Patent application, 28 August 2017; patents.justia.com]
14. [https://patents.justia.com/patents-by-us-classification/PLT/221 Elm Patents: 'UAMTF', PP30543, published 28 February 2019; patents.justia.com]
15. Snow, G. A.. "''Ulmus alata'' Michx. Winged Elm". United States Department of Agriculture. Southern Research Station.
16. "Bartlett Tree Experts: Tree Services".
17. "BROOKLYN BOTANIC GARDEN >> Plant Records".
18. [https://www.cirrusimage.com/tree_winged_elm/ Photographs of Morton Arboretum ''U. alata'', Acc. no. 116-96; cirrusimage.com]
19. "List of plants in the {elm} collection". Brighton & Hove City Council.
20. Johnson, Owen (ed.) (2003). ''Champion Trees of Britain & Ireland''. Whittet Press, {{ISBN. 978-1-873580-61-5.
21. Royal Botanic Garden Edinburgh. (2017). ''List of Living Accessions: Ulmus'' [http://elmer.rbge.org.uk/bgbase/livcol/bgbaselivcol.php?cfg=bgbase/livcol/bgbaselivcol.cfg&startrow=26]