# Diarthron > Mediated Wiki article. Canonical URL: https://mediated.wiki/source/Diarthron > Markdown URL: https://mediated.wiki/source/Diarthron.md > Source: https://en.wikipedia.org/wiki/Diarthron > Source revision: 1246066944 > License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) {{Short description|Genus of flowering plants}} {{Automatic taxobox | image = Diarthron altaica 44315652.jpg | image_caption = ''Diarthron altaica'' | taxon = Diarthron | authority = [Turcz.](/source/Nikolai_Turczaninow) (1832) | synonyms = *''Dendrostellera'' {{small|(C.A.Mey.) Tiegh. (1893)}} *''Stelleropsis'' {{small|Pobed. (1950)}} | synonyms_ref = {{cite web |title=''Diarthron'' Turcz. |url=https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:39228-1 |website=[Plants of the World Online](/source/Plants_of_the_World_Online) |publisher=[Royal Botanic Gardens, Kew](/source/Royal_Botanic_Gardens%2C_Kew) |access-date=16 September 2024}} }} '''''Diarthron''''' is a [genus](/source/genus) of [flowering plant](/source/flowering_plant) in the family [Thymelaeaceae](/source/Thymelaeaceae). The precise limits of the genus are uncertain. When broadly [circumscribed](/source/Circumscription_(taxonomy)) to include '''''Dendrostellera''''' and '''''Stelleropsis''''', it consists of annual and perennial herbaceous plants and small shrubs, with reddish, white or green flowers lacking [petal](/source/petal)s. It includes 16 species which range from southern European Russia and the Caucasus through Western and Central Asia through China and Mongolia to Korea and the Russian Far East. ==Description== When broadly [circumscribed](/source/Circumscription_(taxonomy)) (i.e. including ''Dendrostellera'' and ''Stelleropsis''), ''Diarthron'' is a genus of annual or perennial herbaceous plants or short deciduous shrubs. Prior to a review in 1982, only the annual species were placed in ''Diarthron'', with the perennial herbs being in ''Stelleropsis'' and the shrubs in ''Dendrostellera''. The flowers lack [petal](/source/petal)s. There are usually four (sometimes five) [sepal](/source/sepal)s, united at the base into a tube with lobes at the end, reddish, white or green in colour. The [ovary](/source/Ovary_(botany)) has a single chamber ([locule](/source/locule)). The fruit is dry with the seed enclosed in a thin glossy black [pericarp](/source/Fruit_anatomy). ==Taxonomy== The genus ''Diarthron'' was first described in 1832 by [Nikolai Turczaninow](/source/Nikolai_Turczaninow) for the species ''[Diarthron linifolium](/source/Diarthron_linifolium)''. Many species were added to the genus in 1982 by Kit Tan, being transferred from related genera. A 2006 study suggested that as circumscribed, ''Diarthron'' is not [monophyletic](/source/Monophyly), so that ''Dendrostellera'' and ''Stelleropsis'' which Tan had merged into ''Diarthron'' should be reinstated. Studies in 2002 and 2009, based on [chloroplast DNA](/source/chloroplast_DNA), placed ''Diarthron'' in a small group of related genera, sister to a clade consisting of ''[Thymelaea](/source/Thymelaea)'' and ''[Daphne](/source/Daphne_(plant))''; however for most genera only one species was included. {{clade|style=line-height:100% |1={{clade |1=''[Edgeworthia](/source/Edgeworthia)'' |2={{clade |1={{clade |1=''[Wikstroemia](/source/Wikstroemia)'' |2=''[Stellera](/source/Stellera)'' }} |2={{clade |1=''Diarthron'' |2={{clade |1=''[Thymelaea](/source/Thymelaea)'' |2=''[Daphne](/source/Daphne_(plant))'' }} }} }} }} }} ===Species=== 16 species are currently accepted. *''[Diarthron altaicum](/source/Diarthron_altaicum)'' (Thiéb.-Bern.) Kit Tan *''[Diarthron ammodendron](/source/Diarthron_ammodendron)'' (Kar. & Kir.) ined. *''[Diarthron antoniniae](/source/Diarthron_antoniniae)'' (Pobed.) Kit Tan *''[Diarthron arenarium](/source/Diarthron_arenarium)'' (Pobed.) Kit Tan *''[Diarthron caucasicum](/source/Diarthron_caucasicum)'' (Pobed.) Kit Tan *''[Diarthron iranicum](/source/Diarthron_iranicum)'' (Pobed.) Kit Tan *''[Diarthron issykkulense](/source/Diarthron_issykkulense)'' (Pobed.) Kit Tan *''[Diarthron lessertii](/source/Diarthron_lessertii)'' (Wikstr.) Kit Tan *''[Diarthron linearifolium](/source/Diarthron_linearifolium)'' (Pobed.) Kit Tan *''[Diarthron linifolium](/source/Diarthron_linifolium)'' Turcz. *''[Diarthron macrorhachis](/source/Diarthron_macrorhachis)'' (Pobed.) Kit Tan *''[Diarthron magakjanii](/source/Diarthron_magakjanii)'' (Sosn.) Kit Tan *''[Diarthron tarbagataicum](/source/Diarthron_tarbagataicum)'' (Pobed.) Kit Tan *''[Diarthron tianschanicum](/source/Diarthron_tianschanicum)'' (Pobed.) Kit Tan *''[Diarthron turkmenorum](/source/Diarthron_turkmenorum)'' (Pobed.) Kit Tan *''[Diarthron vesiculosum](/source/Diarthron_vesiculosum)'' (Fisch. & C.A.Mey.) C.A.Mey. ==References== {{Reflist|refs= {{Citation |last1=van der Bank |first1=Michelle |last2=Fay |first2=Michael F. |last3=Chase |first3=Mark W. |date=2002 |title=Molecular Phylogenetics of Thymelaeaceae with particular reference to African and Australian genera |journal=Taxon |volume=51 |issue=2 |pages=329–339 |doi=10.2307/1554901 |jstor=1554930 |name-list-style=amp }} {{Citation |last1=Beaumont |first1=Angela J. |last2=Edwards |first2=Trevor J. |last3=Manning |first3=John |last4=Maurin |first4=Olivier |last5=Rautenbach |first5=Marline |last6=Motsi |first6=Moleboheng C. |last7=Fay |first7=Michael F. |last8=Chase |first8=Mark W. |last9=Van Der Bank |first9=Michelle |date=2009 |title=Gnidia (Thymelaeaceae) is not monophyletic: taxonomic implications for Thymelaeoideae and a partial new generic taxonomy for ''Gnidia'' |journal=Botanical Journal of the Linnean Society |volume=160 |issue=4 |pages=402–417 |doi=10.1111/j.1095-8339.2009.00988.x |name-list-style=amp |doi-access=free }} {{citation |first1=Yinzheng |last1=Wang |first2=Michael G. |last2=Gilbert |contribution=Diarthron |contribution-url=http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=109817 |access-date=2017-11-26 |editor-last=Wu |editor-first=Zhengyi |editor2-last=Raven |editor2-first=Peter H. |editor3-last=Hong |editor3-first=Deyuan |title=Flora of China ''(online)'' |publisher=eFloras.org |url=http://www.efloras.org/flora_page.aspx?flora_id=2 |name-list-style=amp }} {{Citation |last1=Galicia-Herbada |first1=D. |date=2006 |title=Origin and diversification of ''Thymelaea'' (Thymelaeaceae): inferences from a phylogenetic study based on ITS (rDNA) sequences |journal=Plant Systematics and Evolution |volume=257 |issue=3–4 |pages=159–187 |doi=10.1007/s00606-005-0371-z |bibcode=2006PSyEv.257..159G }} {{citation |title=Plant Name Details for ''Diarthron'' Turcz. |work=[The International Plant Names Index](/source/International_Plant_Names_Index) |url=http://www.ipni.org/ipni/idPlantNameSearch.do?id=39228-1 |access-date=2017-11-26 }} {{citation |title=Search for ''Diarthron'' |work=[The International Plant Names Index](/source/International_Plant_Names_Index) |url=http://www.ipni.org/ipni/advPlantNameSearch.do?find_genus=Diarthron |access-date=2017-11-26 }} {{Citation |last1=Tan |first1=K. |date=1982 |title=Studies in the Thymelaeaceae III: the status of ''Diarthron'', ''Dendrostellera'', ''Stelleropsis'' and ''Stellera'' |journal=Notes from the Royal Botanic Garden, Edinburgh |volume=40 |pages=213–221 }}, cited in {{Harvtxt|Galicia-Herbada|2006}} }} {{Taxonbar|from=Q8470784}} Category:Thymelaeoideae Category:Thymelaeaceae genera Category:Paleotropical flora Category:Taxa described in 1832 Category:Taxa named by Nikolai Turczaninow {{Thymelaeaceae-stub}} --- Adapted from the Wikipedia article [Diarthron](https://en.wikipedia.org/wiki/Diarthron) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Diarthron?action=history)). 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