What is Elm?
{{other uses}} {{Taxobox | name = Elm | image = Mature Ulmus rubra in graveyard.jpg | image_width = 240px | image_caption = Mature Slippery Elm | regnum = [[Plant]]ae | divisio = [[flowering plant|Magnoliophyta]] | classis = [[dicotyledon|Magnoliopsida]] | ordo = [[Rosales]] | familia = [[Ulmaceae]] | genus = '''''Ulmus''''' | genus_authority = [[Carolus Linnaeus|L.]] | subdivision_ranks = Species | subdivision = See [[Elm species, varieties, cultivars and hybrids]] }} '''Elms''' are [[deciduous]] and [[semi-deciduous]] [[tree]]s,<ref>making up the genus ''Ulmus'', family [[Ulmaceae]]</ref> 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 flower]]s, and which, being wind-pollinated, are without [[petal]]s. The [[fruit]] is a round [[Samara (fruit)|samara]]. Elms take many decades to grow to maturity. ==References== <references/> {{Commons|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. *[http://www.hort.cornell.edu/uhi/outreach/recurbtree/pdfs/08Ulmus%20x.pdf 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). [http://pubs.nrc-cnrc.gc.ca/rp/rppdf/x04-158.pdf] {{Webarchive|url=https://web.archive.org/web/20070628155809/http://pubs.nrc-cnrc.gc.ca/rp/rppdf/x04-158.pdf |date=2007-06-28 }} *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). Intern