Ulmus serotina

Description

Rarely exceeding 20 m in height, the tree has a rounded crown with spreading to pendulous branches. The glabrous young shoots become progressively corky-winged with age, and bear oblong to obovate leaves

Image:Gardenology.org-IMG 2477 ucla09.jpg|U. serotina bark File:Gardenology.org-IMG 2476 ucla09.jpg|Bole of same Image:SHHG Serotina foliage.jpg|U. serotina foliage Image:Ulmus serotina.jpg|U. serotina in fruit File:Elmwood Cemetery 2010-10-09 Memphis TN 20.jpg|September elm in October, Elmwood Cemetery, Memphis, Tennessee (2010) File:Warblers on an Elm Tree.jpg|Bark of young September elm, with Tennessee warblers

Pests and diseases

The species is highly susceptible to Dutch elm disease.

Cultivation

Before the outbreak of Dutch elm disease, U. serotina enjoyed limited popularity as a shade tree in the southern part of its range. The tree grows well on most soils, but is intolerant of anaerobic or saline conditions; it is also frost tolerant to -30°C (-23°F). The September elm is very rare in cultivation in Europe; it was briefly propagated and marketed in the UK by the Hillier and Sons nursery, Winchester, Hampshire, from 1972 to 1977, when 16 were sold. It is not known to have been introduced to Australasia. No cultivars of this taxon are known, nor is it known to be in commerce.

Notable trees

• The current US national champion, measuring 28.65 meters high in 2013, grows in the Spring Grove Cemetery in Hamilton County, Ohio.
• The former national champion measured at 25.5 m high in 2007, grows in Davidson County, Tennessee.

Hybrids

• Ulmus × arkansana [: U. serotina × U. crassifolia ]. Present in Arkansas and Oklahoma.

Accessions

;North America

• Mildred E. Mathias Botanical Garden, UCLA, Los Angeles, California, US. (No details available)
• Morton Arboretum, US. Acc. no. 1039-23.
• U S National Arboretum http://www.usna.usda.gov/index.htm, Washington, D.C., US. Acc. no. 55431. ;Europe
• Grange Farm Arboretum, Sutton St James, Spalding, Lincolnshire, UK. Acc. no. not known.
• Royal Botanic Garden Edinburgh, UK. Acc. no. 20080091, from seed wild collected in USA.
• Royal Botanic Gardens, Kew, UK. Acc. no. not known.
• Royal Botanic Gardens, Wakehurst Place, UK. Acc. no. 2006-143.
• Sir Harold Hillier Gardens, UK. Acc. no. 2004.1059, 3 trees, collected in Tennessee, 2004.
• Thenford House arboretum, Banbury, UK. No details available.
• University of Copenhagen, Botanic Garden, Denmark. No details available.

References

References

1. IUCN SSC Global Tree Specialist Group.. (2020). "''Ulmus serotina''".
2. (1998). "A new species of ''Ulmus'' (Ulmaceae) from southern Mexico and a synopsis of the species in Mexico". Brittonia.
3. Duncan, W. H., & Duncan, M. B. (2000). ''Trees of the Southeastern United States'', 234–238. Athens, Georgia, USA. {{ISBN. 0-8203-2271-7
4. "Ulmus serotina Sarg.". Board of Trustees of the Royal Botanic Gardens, Kew.
5. {{Cite PLANTS
6. Bean, W. J. (1981). ''Trees and shrubs hardy in Great Britain'', 7th edition. Murray, London.
7. Hillier & Sons (1977). ''Catalogue of Trees & Shrubs''. Hillier, Ampfield, UK.
8. Hillier & Sons ''Sales inventory 1962 to 1977'' (unpublished).
9. "September Elm - OH".
10. "Spring Grove Cemetery - Champions of the Grove".
11. "Ghost Trees: The champion September elm".
12. "National Champion Trees".
13. "Ulmus serotina in Flora of North America @ efloras.org".
14. "Duke University Vascular Plant Collection (DUKE)".
15. "Louisiana State University, Shirley C. Tucker Herbarium (NO:Vascular Plants)".
16. "Mississippi Museum of Natural Science Herbarium (MMNS)".
17. "Mississippi State University (MISSA)".
18. "Arkansas Natural Heritage Commission Herbarium (ANHC)".
19. "Austin Peay State University Herbarium (APSC)".
20. "Royal Botanic Garden Edinburgh - Catalogue of the Living Collections".