Elm

Elm
Mature Slippery Elm
Scientific classification
Kingdom:	Plantae
Division:	Magnoliophyta
Class:	Magnoliopsida
Order:	Rosales
Family:	Ulmaceae
Genus:	Ulmus L.
Species
See Elm species, varieties, cultivars and hybrids

Elms are deciduous and semi-deciduous trees, found throughout the Northern Hemisphere from Siberia to Indonesia, Mexico to Japan. They have alternate, simple, single- or doubly-serrate leaves, usually asymmetric at the base and sharply pointed at the tip.

Elms are hermaphroditic, having perfect flowers, and which, being wind-pollinated, are without petals. The fruit is a round samara.

Elms take many decades to grow to maturity.

References

1. ↑ making up the genus Ulmus, family Ulmaceae

Wikimedia Commons has media related to Ulmus.

• Collin, E. (2001). Elm. In Teissier du Cros (Ed.) (2001) Forest Genetic Resources Management and Conservation. France as a case study. Ministry of Agriculture and Fisheries, Bureau of Genetic Resources. INRA DIC. France.
• Cornell University: Elm hybrids (pdf file)
• Martín-Benito D., Concepción García-Vallejo M., Alberto Pajares J., López D. 2005. Triterpenes in elms in Spain. Can. J. For. Res. 35: 199–205 (2005). Archived 2007-06-28 at the Wayback Machine
• Mittempergher, L. & Santini, A. (2004) The history of elm breeding. Investigacion agraria: Sistemas y recursos forestales 13(1): 161-177 (2004).
• Ware, G. (1995). Little-known elms from China: landscape tree possibilities. Journal of Arboriculture, (Nov. 1995). International Society of Arboriculture, Champaign, Illinois, USA. Archived 2007-11-30 at the Wayback Machine.

Other websites

• Northern Arizona University: Elm trials.

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