{{Short description|Species of flowering plant}} {{Speciesbox | image = Urapán (Fraxinus uhdei) (14355614195).jpg | status = LC | status_system = IUCN3.1 | status_ref = <ref name="iucn status 11 January 2023">{{cite iucn |author=Westwood, M. |author2=Samain, M. |author3=Martínez Salas, E. |date=2017 |title=''Fraxinus uhdei'' |volume=2017 |article-number=e.T96444707A96444709 |doi=10.2305/IUCN.UK.2017-3.RLTS.T96444707A96444709.en |access-date=11 January 2023}}</ref> | genus = Fraxinus | parent = Fraxinus sect. Melioides | species = uhdei | authority = ({{interlanguage link|Theodor Wenzig|lt=Wenz.|es}}) Lingelsh | synonyms_ref = {{r|powo}} | synonyms = {{Species list |Fraxinus americana var. uhdei |Wenz. |Fraxinus cavekiana |Standl. & Steyerm. |Fraxinus chiapensis |Lundell |Fraxinus hondurensis |Standl. |Fraxinus ovalifolia |(Wenz.) Lingelsh. |Fraxinus uhdei var. pseudoperiptera |Lingelsh. |Fraxinus uhdei var. typica |Lingelsh. }} }}
'''''Fraxinus uhdei''''', commonly known as '''tropical ash''' or '''Shamel ash''', is a species of tree native to Mexico and Central America.{{r|cabi}} It is commonly planted as a street tree in Mexico and the southwestern United States. It has also been planted and spread from cultivation in Hawaii, where it is now considered an invasive species.{{r|cabi}}
Like other species in the section ''Melioides'', ''Fraxinus uhdei'' is dioecious, with male and female flowers produced on separate individuals.<ref>{{cite journal|doi=10.1007/s00606-008-0005-3|title=Systematics of ''Fraxinus'' (Oleaceae) and evolution of dioecy|year=2008|last1=Wallander|first1=Eva|journal=Plant Systematics and Evolution|volume=273|issue=1–2|pages=25–49|s2cid=24152294}}</ref>
==Taxonomy== The tropical ash was originally described as a variety of ''Fraxinus americana'' (white ash) by {{interlanguage link|Theodor Wenzig|es}} in 1883{{r|ipni105796-2}} and was separated as a different species in 1907 by Alexander von Lingelsheim.{{r|ipni105922-2}} The specific epithet ''uhdei'' refers to Carl Uhde, a German plant collector who explored Mexico in the 1840s.{{r|brace2005}}
''Fraxinus uhdei'' is locally known as '''''fresno blanco''''' in Spanish; other English vernacular names include '''Hawaiian ash''' and '''Mexican ash'''.{{r|cabi}} The name Shamel ash refers to Archie Shamel, who introduced the trees to California in the 1920s.{{r|brace2005}} It is known as urapan in Colombia, where it was introduced in the 1950s.{{r|filgueira04}}
==Ecology== A dieback caused by a phytoplasma was recorded in Colombia and Ecuador in 2004.{{r|filgueira04}}
==References== {{Reflist|refs= <ref name=brace2005>Bracewell R.N. 2005. Trees of Stanford and environs. Stanford, CA, USA: Stanford Historical Society</ref> <ref name=cabi>{{cite web |last1=Pasiecznik |first1=Nick |year=2016 |title=''Fraxinus uhdei'' |url=https://www.cabi.org/isc/datasheet/24559 |publisher=Centre for Agriculture and Bioscience International (CABI) |website=Invasive Species Compendium |access-date=3 January 2021 |language=en}}</ref> <ref name=ipni105796-2>{{cite web |title=''Fraxinus americana'' var. ''uhdei'' Wenz. |url=http://ipni.org/n/105796-2 |website=International Plant Names Index |publisher=Royal Botanic Gardens, Kew, Harvard University Herbaria & Libraries, and Australian National Botanic Gardens |access-date=3 January 2021}}</ref> <ref name=ipni105922-2>{{cite web |title=''Fraxinus uhdei'' Lingelsh. |url=http://ipni.org/n/105922-2 |website=International Plant Names Index |publisher=Royal Botanic Gardens, Kew, Harvard University Herbaria & Libraries, and Australian National Botanic Gardens |access-date=3 January 2021}}</ref> <ref name=powo>{{cite web |title=''Fraxinus uhdei'' (Wenz.) Lingelsh. |url=https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:105922-2 |website=Plants of the World Online |publisher=Royal Botanic Gardens, Kew |access-date=3 January 2021}}</ref> <ref name=filgueira04>{{cite journal |author1=Filgueira, J. J. |author2=Franco-Lara, L. |author3=Salcedo, J. E. |author4=Gaitan, S. L. |author5=Boa, E. R. |title=Urapan (Fraxinus udhei) dieback, a new disease associated with a phytoplasma in Colombia. |journal=Plant Pathology |date=2004 |volume=53 |issue=4 |page=520 |doi=10.1111/j.1365-3059.2004.01030.x|doi-access=free }}</ref> }}
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uhdei Category:Flora of Northern America Category:Dioecious plants Category:Trees of Central America Category:Trees of Northern America Category:Flora of the Central American pine–oak forests
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