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| Ulmaceae Temporal range:
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|---|---|
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| Ulmus laciniata Morton Arboretum acc. 180-84-1 | |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Rosales |
| Family: | Ulmaceae Mirb. 1815 |
| Type species | |
| Ulmus L. 1753
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| Genera | |
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| The range of Ulmaceae. | |
| Synonyms[2] | |
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The Ulmaceae (/ʌlˈmeɪsi/) are a family of flowering plants that includes the elms (genus Ulmus), and the zelkovas (genus Zelkova).[3] Members of the family are widely distributed throughout the north temperate zone, and have a scattered distribution elsewhere except for Australasia.[2][4]
The family was formerly sometimes treated to include the hackberries, (Celtis and allies), but an analysis by the Angiosperm Phylogeny Group suggests that these genera are better placed in the related family Cannabaceae.[4] It generally is considered to include ca 7 genera and about 45 species.[5] Some classifications also include the genus Ampelocera.[6]
- ^ "Rosales". www.mobot.org. Retrieved 2023-06-16.
- ^ a b Watson, L.; Dallwitz, M. J. (1992). "The Families of Flowering Plants: Ulmaceae Mirb". Retrieved 21 November 2006.
- ^ Denk, T; GW Grimm (February 2005). "Phylogeny and biogeography of Zelkova (Ulmaceae sensu stricto) as inferred from leaf morphology, ITS sequence data and the fossil record". Bot J Linn Soc. 147 (2): 129–157. doi:10.1111/j.1095-8339.2005.00354.x.
- ^ a b Stevens, P (2001). "Angiosperm Phylogeny Website". Missouri Botanical Garden. Retrieved 21 November 2006.
- ^ Christenhusz, M. J. M. & Byng, J. W. (2016). "The number of known plants species in the world and its annual increase". Phytotaxa. 261 (3): 201–217. doi:10.11646/phytotaxa.261.3.1.
- ^ Ueda, Kunihiko; K Kosuge; H Tobe (June 1997). "A molecular phylogeny of Celtidaceae and Ulmaceae (Urticales) based on rbcL nucleotide sequences". Journal of Plant Research. 110 (2): 171–178. Bibcode:1997JPlR..110..171U. doi:10.1007/BF02509305. S2CID 38413808.