Arachnothryx

{{short description|Species of plant}} {{Automatic taxobox | image = Arachnothryx buddleioides.jpg | image_caption = ''Arachnothryx buddleioides'' | display_parents = 2 | taxon = Arachnothryx | authority = Planch. | type_species = ''Arachnothryx leucophylla'' | type_species_authority = (Kunth) Planch. | synonyms = * ''Cuatrecasasiodendron'' Steyerm. * ''Javorkaea'' Borhidi & Jarai-Koml. * ''Otocalyx'' Brandegee * ''Siphonandra'' Turcz. | synonyms_ref = <ref name = powo>{{cite web |title=''Arachnothryx'' Planch. |url=https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:328092-2 |website=Plants of the World Online |publisher=Royal Botanic Gardens, Kew |access-date=11 May 2026}}</ref> }}

'''''Arachnothryx''''' is a genus of flowering plants in the family Rubiaceae. It contains about 101 species which range from Mexico to Peru and to Trinidad.<ref name=powo/>

==Taxonomy== ''Arachnothryx'' was named by Jules Émile Planchon in 1849.<ref name="ipniarachnothryx">''Arachnothryx'' In: International Plant Names Index. (see ''External links'' below).</ref><ref name="planchon1849">Jules Émile Planchon. 1849. ''Flore des Serres et des Jardins de l'Europe'' 5:442 and illustration. (see ''External links'' below).</ref> This generic name is derived from Ancient Greek: ''arachne'' or ''arachnos'', "a spider", and ''thrix'' or ''trichos'', "hair".<ref name="Quattrocchi2000">{{cite book|author=Quattrocchi U|year=2000|title=CRC World Dictionary of Plant Names|volume=1|publisher=CRC Press|location=Boca Raton, New York, Washington DC, London|isbn=978-0-8493-2675-2}}</ref>

As currently circumscribed, ''Arachnothryx'' is paraphyletic over ''Cuatrecasasiodendron'', ''Gonzalagunia'', and ''Javorkaea''. Some authors have included these genera in a broadly defined ''Rondeletia'', but molecular phylogenetic studies have shown that they are more closely related to ''Guettarda'' than to ''Rondeletia''.<ref name="Manns2010">{{cite journal|author=Manns U, Bremer B |year=2010 |title=Towards a better understanding of intertribal relationships and stable tribal delimitations within Cinchonoideae s.s. (Rubiaceae) |journal=Molecular Phylogenetics and Evolution |volume=56 |pages=21–39 |url=http://www.bergianska.se/pub/publikationer/Manns/Manns_Bremer_2010.pdf |doi=10.1016/j.ympev.2010.04.002 |pmid=20382247 |issue=1 |url-status=dead |archive-url=https://web.archive.org/web/20110927023612/http://www.bergianska.se/pub/publikationer/Manns/Manns_Bremer_2010.pdf |archive-date=2011-09-27 }}</ref>

===Formerly placed here=== * ''Renistipula costaricensis'' (Standl.) Borhidi (as ''Arachnothryx costaricensis'' {{small|(Standl.) Borhidi}}) * ''Renistipula galeottii'' (Standl.) Borhidi (as ''Arachnothryx galeottii'' {{small|(Standl.) Borhidi}}) * ''Renistipula izabalensis'' (Standl. & Steyerm.) Borhidi (as ''Arachnothryx izabalensis'' {{small|(Standl. & Steyerm.) Borhidi}})

==References== {{Reflist}}

==External links== {{Commons category|Arachnothryx}} *[http://apps.kew.org/wcsp/qsearch.do?plantName=Arachnothryx ''Arachnothryx'' in the World Checklist of Rubiaceae] * [http://www.botany.si.edu/ing/INGsearch.cfm?searchword=Arachnothryx ''Arachnothryx''] At: [http://www.botany.si.edu/ing/ Index Nominum Genericorum] At: [http://www.botany.si.edu/index.htm?references References] At: [http://www.botany.si.edu/index.htm NMNH Department of Botany] At: [http://www.mnh.si.edu/rc/ Research and Collections] At: [http://www.mnh.si.edu/ Smithsonian National Museum of Natural History] * [http://www.ipni.org/ipni/advPlantNameSearch.do?find_family=&find_genus=Arachnothryx+&find_species=&find_infrafamily=&find_infragenus=&find_infraspecies=&find_authorAbbrev=&find_includePublicationAuthors=on&find_includePublicationAuthors=off&find_includeBasionymAuthors=on&find_includeBasionymAuthors=off&find_publicationTitle=&find_isAPNIRecord=on&find_isAPNIRecord=false&find_isGCIRecord=on&find_isGCIRecord=false&find_isIKRecord=on&find_isIKRecord=false&find_rankToReturn=all&output_format=normal&find_sortByFamily=on&find_sortByFamily=off&query_type=by_query&back_page=plantsearch ''Arachnothryx''] At [http://www.ipni.org/ipni/plantnamesearchpage.do Plant Names] At: [http://www.ipni.org/ IPNI] * [http://www.botanicus.org/page/1364456 ''Arachnothryx''] In: [http://www.botanicus.org/item/31753002747282 Volume 5 (1849)] Of: [http://www.botanicus.org/title/b11954978 Fl. Serres Jard. Eur.] At: [http://www.botanicus.org/browse/titles Titles] At: [http://www.botanicus.org/ Botanicus] * [http://www.ars-grin.gov/cgi-bin/npgs/html/genus.pl?13426 ''Arachnothryx''] At: [http://www.ars-grin.gov/cgi-bin/npgs/html/gnlist.pl?975 List of Genera] At: [http://www.ars-grin.gov/cgi-bin/npgs/html/family.pl?975 Rubiaceae] At: [http://www.ars-grin.gov/cgi-bin/npgs/html/famlist.pl List of families] At: [http://www.ars-grin.gov/cgi-bin/npgs/html/taxfam.pl?language=en Families and Genera in GRIN] At: [http://www.ars-grin.gov/cgi-bin/npgs/html/queries.pl?language=en Queries] At: [http://www.ars-grin.gov/cgi-bin/npgs/html/index.pl GRIN taxonomy for plants] * [http://ntbg.org/plants/plant_details.php?plantid=10045 ''Arachnothryx''] At: [https://web.archive.org/web/20101126200020/http://ntbg.org/plants/choose_a_plant.php Choose a Plant] At: [https://web.archive.org/web/20101126184508/https://ntbg.org/plants/ Meet the Plants] At: [http://ntbg.org/index.php National Tropical Botanical Garden]

Category:Guettardeae Category:Rubiaceae genera Category:Taxonomy articles created by Polbot Category:Flora without expected TNC conservation status Category:Taxa named by Jules Émile Planchon

Arachnothryx

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