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{{Short description|Genus of flowering plants}}
{{DISPLAYTITLE:''Gastonia'' (plant)}}
{{DISPLAYTITLE:''Gastonia'' (plant)}}
[[File:Gastonia-Cutispongia-1.jpg|thumbnail|''[[Polyscias cutispongia]]'' (=''Gastonia cutispongia'')]]
[[File:Gastonia-Cutispongia-1.jpg|thumbnail|''[[Polyscias cutispongia]]'' (=''Gastonia cutispongia'')]]


'''''Gastonia''''' {{au|[[Philibert Commerson|Commerson]] ex [[Jean-Baptiste Lamarck|Lamarck]]}} is a [[Obsolescence|formerly accepted]] [[genus]] of [[flowering plant]]s in the [[ivy]] and [[ginseng]] [[Family (biology)|family]], [[Araliaceae]]. It had been known as an [[Nature|unnatural]] [[Taxon|group]], but was recognized as late as 2010, when its nine [[species]]<ref name="mabberley2008">{{cite book| last = Mabberley| first = D.J.| title = Mabberley's Plant-book A Portable Dictionary of Plants, Their Classifications, and Uses| year = 2008| publisher = Cambridge University Press| isbn = 0-521-82071-5 }}</ref> were distributed to four different [[subgenera]] of the large genus ''[[Polyscias]]''.<ref name="lowry2010">Porter P. Lowry II and Gregory M. Plunkett. 2010. "Recircumscription of ''Polyscias'' (Araliaceae) to include six related genera, with a new infrageneric classification and a synopsis of species". ''[[Plant Diversity and Evolution]]'' (formerly ''Botanische Jahrbucher'') '''128'''(1-2):55-84. {{doi|10.1127/1869-6155/2010/0128-0003}}. (See ''External links'' below).</ref> Because the genus ''Gastonia'' is now obsolete, its species are herein referred to by their names in ''Polyscias''.
'''''Gastonia''''' {{au|[[Philibert Commerson|Commerson]] ex [[Jean-Baptiste Lamarck|Lamarck]]}} is a formerly accepted [[genus]] of plants in the ivy and ginseng family, [[Araliaceae]]. It had been known as an unnatural [[Taxon|group]], but was recognized as late as 2010, when its nine [[species]]<ref name="mabberley2008">{{cite book| last = Mabberley| first = D.J.| title = Mabberley's Plant-book A Portable Dictionary of Plants, Their Classifications, and Uses| year = 2008| publisher = Cambridge University Press| isbn = 978-0-521-82071-4 }}</ref> were distributed to four different [[subgenera]] of the large genus ''[[Polyscias]]''.<ref name="lowry2010">Porter P. Lowry II and Gregory M. Plunkett. 2010. "Recircumscription of ''Polyscias'' (Araliaceae) to include six related genera, with a new infrageneric classification and a synopsis of species". ''[[Plant Diversity and Evolution]]'' (formerly ''Botanische Jahrbucher'') '''128'''(1-2):55-84. {{doi|10.1127/1869-6155/2010/0128-0003}}. (See ''External links'' below).</ref> Because the genus ''Gastonia'' is now obsolete, its species are herein referred to by their names in ''Polyscias''.


The species that constituted ''Gastonia'' are mostly [[island]] [[Endemism|endemics]], with [[Madagascar]] and [[New Guinea]] being the largest [[Land|land masses]] on which any of them [[Range (biology)|naturally occur]]. ''Gastonia'' had a [[disjunct distribution]], with three species from the [[Seychelles]], three more from the [[Mascarenes]], one from Madagascar and the [[Comoro Islands]], and two [[Species distribution|distributed]] from [[Malesia]] to the [[Solomon Islands]].<ref name="frodin2003">{{cite book| author = David G. Frodin|author2=Rafaël Govaerts| title = World Checklist and Bibliography of Araliaceae| year = 2003| publisher = Royal Botanic Gardens Kew| isbn = 978-1-84246-048-1 }}</ref>
The species that constituted ''Gastonia'' are mostly [[island endemic]]s, with [[Madagascar]] and [[New Guinea]] being the largest land masses on which any of them naturally occur. ''Gastonia'' had a [[disjunct distribution]], with three species from the [[Seychelles]], three more from the [[Mascarenes]], one from Madagascar and the [[Comoro Islands]], and two [[Species distribution|distributed]] from [[Malesia]] to the [[Solomon Islands]].<ref name="frodin2003">{{cite book| author = David G. Frodin|author2=Rafaël Govaerts| title = World Checklist and Bibliography of Araliaceae| year = 2003| publisher = Royal Botanic Gardens Kew| isbn = 978-1-84246-048-1 }}</ref>


''Gastonia'' is a genus of small to large [[tree]]s. It shares with [[Affinity (taxonomy)|related]] genera, the lack of an [[Glossary of botanical terms#articulation|articulation]] on the [[Pedicel (botany)|pedicel]], below the [[flower]]. It is [[Identification (biology)|distinguished]] from ''[[Reynoldsia]]'', ''[[Munroidendron]]'', and ''[[Tetraplasandra]]'' by the radiating [[Style (botany)|style]] arms that [[Glossary of botanical terms#persistent|persist]] on the [[fruit]].<ref name="philipson1970redefinition">William R. Philipson. 1970. "A redefinition of ''Gastonia'' and related genera (Araliaceae)". ''Blumea'' '''18'''(2):497-505.</ref>
''Gastonia'' is a genus of small to large size [[tree]]s. It shares with [[Affinity (taxonomy)|related]] genera, the lack of an [[Glossary of botanical terms#articulate|articulation]] on the [[Pedicel (botany)|pedicel]], below the [[flower]]. It is [[Identification (biology)|distinguished]] from ''[[Reynoldsia (plant)|Reynoldsia]]'', ''[[Munroidendron]]'', and ''[[Tetraplasandra]]'' by the radiating [[Style (botany)|style]] arms that [[Glossary of botanical terms#persistent|persist]] on the [[fruit]].<ref name="philipson1970redefinition">William R. Philipson. 1970. "A redefinition of ''Gastonia'' and related genera (Araliaceae)". ''Blumea'' '''18'''(2):497-505.</ref>


==Species==
==Species==
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''Polyscias spectabilis'' is from New Guinea and the Solomon Islands. It sometimes exceeds {{convert|40|m|ft|abbr=on}} in [[height]], and is the tallest member of Araliaceae.<ref name="mabberley2008"/> Like most members of ''Polyscias'', ''P. spectabilis'' is sparingly branched, sometimes even [[Palm (plant)|palm]]-like in [[Habit (biology)|form]], at least when [[Juvenile (organism)|young]]. [[Adult|Mature]] individuals of ''P. spectabilis'' are sometimes [[Branch|unbranched]] for 3/4 of the height of the tree.<ref name="frodin2003"/> [[Hermann Harms]] erected the [[monotypic]] genus ''Peekeliopanax'' for it in 1926,<ref name="ipnipeekeliopanax">''Peekeliopanax'' in International Plant Names Index. (see ''External links'' below).</ref> but was not followed by other [[taxonomic authority|authors]].
''Polyscias spectabilis'' is from New Guinea and the Solomon Islands. It sometimes exceeds {{convert|40|m|ft|abbr=on}} in [[height]], and is the tallest member of Araliaceae.<ref name="mabberley2008"/> Like most members of ''Polyscias'', ''P. spectabilis'' is sparingly branched, sometimes even [[Palm (plant)|palm]]-like in [[Habit (biology)|form]], at least when [[Juvenile (organism)|young]]. [[Adult|Mature]] individuals of ''P. spectabilis'' are sometimes [[Branch|unbranched]] for 3/4 of the height of the tree.<ref name="frodin2003"/> [[Hermann Harms]] erected the [[monotypic]] genus ''Peekeliopanax'' for it in 1926,<ref name="ipnipeekeliopanax">''Peekeliopanax'' in International Plant Names Index. (see ''External links'' below).</ref> but was not followed by other [[taxonomic authority|authors]].


The [[type species]] for ''Gastonia'' is ''Gastonia cutispongia'' (now ''Polyscias cutispongia'').<ref name="inggastonia">''Gastonia'' In: Index Nominum Genericorum. In: [[Regnum Vegetabile]] (see ''External links'' below).</ref> It is a tall, smooth tree with spongy [[bark]]. It is [[Indigenous (ecology)|native]] to [[Réunion]] and sometimes [[Tree planting|planted]] there,<ref name="rhs">{{cite book| author = Royal Horticultural Society (Great Britain)| title = Dictionary of gardening| year = 1992| isbn = 978-0-333-47494-5 }}</ref> but it has become very rare.<ref name="frodin2003"/>
The [[type species]] for ''Gastonia'' is ''Gastonia cutispongia'' (now ''Polyscias cutispongia'').<ref name="inggastonia">''Gastonia'' In: Index Nominum Genericorum. In: [[Regnum Vegetabile]] (see ''External links'' below).</ref> It is a tall, smooth tree with spongy [[Bark (botany)|bark]]. It is [[Indigenous (ecology)|native]] to [[Réunion]] and sometimes [[Tree planting|planted]] there,<ref name="rhs">{{cite book| author = Royal Horticultural Society (Great Britain)| title = Dictionary of gardening| year = 1992| isbn = 978-0-333-47494-5 }}</ref> but it has become very rare.<ref name="frodin2003"/>


''[[Polyscias maraisiana]]'' is endemic to [[Mauritius]] and was [[Gardening|cultivated]] in [[Europe]] in the 19th century, but has not been seen there since that time.<ref name="frodin2003"/> It was considered exotic on account of its strikingly [[Heteroblasty (botany)|heteroblastic]] leaves.
''[[Polyscias maraisiana]]'' is endemic to [[Mauritius]] and was [[Gardening|cultivated]] in [[Europe]] in the 19th century, but has not been seen there since that time.<ref name="frodin2003"/> It was considered exotic on account of its strikingly [[heteroblastic]] leaves.


''Polyscias maraisiana'' has been the subject of some [[Nomenclature|nomenclatural]] instability. In 1984, [[Wessel Marais]] separated it from ''Gastonia cutispongia'' as ''Gastonia mauritiana''.<ref name="marais1984">Wessel Marais. 1984. "Notes on Mascarene Araliaceae". ''Kew Bulletin'' '''39'''(4):809-816.</ref> In 2003, it was shown that the [[Correct name (botany)|correct name]] for this species was ''Gastonia elegans'' because it had first been [[Species description|described]] in 1866 as ''Terminalia elegans''.<ref name="frodin2003"/> This [[diagnosis (taxonomy)|description]] was a large and unexpected [[Taxonomy (biology)|taxonomic]] [[Erratum|error]] because ''[[Terminalia (plant)|Terminalia]]'' is in the [[Myrtales|Myrtalean]] family [[Combretaceae]]. In 2010, when this species was transferred to ''Polyscias'', the [[botanical name|specific epithet]] had to be changed again because the names ''[[Polyscias mauritiana]]'' and ''[[Polyscias elegans]]'' already existed. The latter two are in the ''Polyscias'' subgenera Grotefendia and Tieghemopanax, respectively.<ref name="lowry2010"/>
''Polyscias maraisiana'' has been the subject of some [[Nomenclature|nomenclatural]] instability. In 1984, [[Wessel Marais]] separated it from ''Gastonia cutispongia'' as ''Gastonia mauritiana''.<ref name="marais1984">Wessel Marais. 1984. "Notes on Mascarene Araliaceae". ''Kew Bulletin'' '''39'''(4):809-816.</ref> In 2003, it was shown that the [[Correct name (botany)|correct name]] for this species was ''Gastonia elegans'' because it had first been [[Species description|described]] in 1866 as ''Terminalia elegans''.<ref name="frodin2003"/> This [[diagnosis (taxonomy)|description]] was a large and unexpected [[Taxonomy (biology)|taxonomic]] [[Erratum|error]] because ''[[Terminalia (plant)|Terminalia]]'' is in the [[Myrtales|Myrtalean]] family [[Combretaceae]]. In 2010, when this species was transferred to ''Polyscias'', the [[botanical name|specific epithet]] had to be changed again because the names ''[[Polyscias mauritiana]]'' and ''[[Polyscias elegans]]'' already existed. The latter two are in the ''Polyscias'' subgenera Grotefendia and Tieghemopanax, respectively.<ref name="lowry2010"/>
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In 2003, a [[checklist]] and [[Nomenclator (nomenclature)|nomenclator]] was published for Araliaceae by [[Kew Gardens]].<ref name="frodin2003"/> Nine species were recognized therein for ''Gastonia''. The genus was described as "generalized, altho in details, it is quite varied". Since that time, [[molecular phylogenetic]] [[Research|studies]], based on [[DNA sequence]]s, have shown that ''Gastonia'' was [[polyphyletic]].<ref name="plunkett2010"> Gregory M. Plunkett and Porter P. Lowry II. 2010. "Paraphyly and polyphyly in ''Polyscias'' sensu lato: molecular evidence and the case for recircumscribing the "pinnate genera" of Araliaceae". ''Plant Diversity and Evolution'' (formerly ''Botanische Jahrbucher'') 128(1-2):23-54. {{doi|10.1127/1869-6155/2010/0128-0002}}. </ref> These studies have shown that [[biogeography]] is strongly [[Correlation and dependence|correlated]] with [[phylogenetic tree|relationships]] in Araliaceae.
In 2003, a [[checklist]] and [[Nomenclator (nomenclature)|nomenclator]] was published for Araliaceae by [[Kew Gardens]].<ref name="frodin2003"/> Nine species were recognized therein for ''Gastonia''. The genus was described as "generalized, altho in details, it is quite varied". Since that time, [[molecular phylogenetic]] [[Research|studies]], based on [[DNA sequence]]s, have shown that ''Gastonia'' was [[polyphyletic]].<ref name="plunkett2010"> Gregory M. Plunkett and Porter P. Lowry II. 2010. "Paraphyly and polyphyly in ''Polyscias'' sensu lato: molecular evidence and the case for recircumscribing the "pinnate genera" of Araliaceae". ''Plant Diversity and Evolution'' (formerly ''Botanische Jahrbucher'') 128(1-2):23-54. {{doi|10.1127/1869-6155/2010/0128-0002}}. </ref> These studies have shown that [[biogeography]] is strongly [[Correlation and dependence|correlated]] with [[phylogenetic tree|relationships]] in Araliaceae.


In 2010, the genus ''Polyscias'' was expanded from about 100 species to 159. The number of species in ''Polyscias'' will be around 250 when the [[Undescribed taxon| undescribed species]] are [[Scientific literature| published]]. Six genera (''[[Arthrophyllum]]'', ''[[Cuphocarpus]]'', ''Gastonia'', ''[[Reynoldsia]]'', ''[[Munroidendron]]'', and ''[[Tetraplasandra]]'') were placed in synonymy under ''Polyscias''. In accordance with the [[phylogenetic]] studies of [[DNA]], ''Polyscias'' was divided into 11 subgenera (Polyscias, Grotefendia, Maralia, Arthrophyllum, Cuphocarpus, Tetraplasandra, Eupteron, Sciadopanax, Tieghemopanax, Indokingia, and Palmervandenbroekia) and seven species were left [[incertae sedis]].<ref name="lowry2010"/>
In 2010, the genus ''Polyscias'' was expanded from about 100 species to 159. The number of species in ''Polyscias'' will be around 250 when the [[Undescribed taxon| undescribed species]] are [[Scientific literature| published]]. Six genera (''[[Arthrophyllum]]'', ''[[Cuphocarpus]]'', ''Gastonia'', ''[[Reynoldsia (plant)|Reynoldsia]]'', ''[[Munroidendron]]'', and ''[[Tetraplasandra]]'') were placed in synonymy under ''Polyscias''. In accordance with the [[phylogenetic]] studies of [[DNA]], ''Polyscias'' was divided into 11 subgenera (Polyscias, Grotefendia, Maralia, Arthrophyllum, Cuphocarpus, Tetraplasandra, Eupteron, Sciadopanax, Tieghemopanax, Indokingia, and Palmervandenbroekia) and seven species were left [[incertae sedis]].<ref name="lowry2010"/>


The nine species that had been in ''Gastonia'' went to four different subgenera of ''Polyscias''; three species went to Grotefendia, three more to Indokingia, two to Tetraplasandra, and one to Maralia.
The nine species that had been in ''Gastonia'' went to four different subgenera of ''Polyscias''; three species went to Grotefendia, three more to Indokingia, two to Tetraplasandra, and one to Maralia.
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== External links ==
== External links ==
* {{cite book| author = David J. Mabberley| title = Mabberley's Plant-book A Portable Dictionary of Plants, their Classifications, and Uses| url = https://books.google.com/books?id=ZFFgAgAAQBAJ&pg=PA762| year = 2008| publisher = Cambridge University Press| isbn = 978-1-107-78259-4| page = 762 }}
* {{cite book| author = David J. Mabberley| title = Mabberley's Plant-book A Portable Dictionary of Plants, their Classifications, and Uses| url = https://books.google.com/books?id=ZFFgAgAAQBAJ&pg=PA762| year = 2008| publisher = Cambridge University Press| isbn = 978-1-107-78259-4| page = 762 }}
* [http://www.uhh.hawaii.edu/~evogengp/assets/docs/lowry2010polyscias1.pdf Lowry & Plunkett.2010] {{color|green|At}} [http://www.uhh.hawaii.edu/~evogengp/ Hawaii Barcoding] {{color|green|At}} [http://www.uhh.hawaii.edu/ University of Hawaii at Hilo]
* [https://web.archive.org/web/20160304234208/http://www.uhh.hawaii.edu/~evogengp/assets/docs/Lowry2010Polyscias1.pdf Lowry & Plunkett.2010] {{color|green|At}} [http://www.uhh.hawaii.edu/~evogengp/ Hawaii Barcoding] {{color|green|At}} [http://www.uhh.hawaii.edu/ University of Hawaii at Hilo]
* [https://web.archive.org/web/20140102193712/http://www.kewbooks.co.uk/asps/ShowDetails.asp?id=440 World Checklist and Bibliography of Araliaceae] {{color|green|At}} [https://web.archive.org/web/20140102194127/http://www.kewbooks.co.uk/asps/Search.asp?types=yes&type=World+Checklists World Checklists] {{color|green|At}} [https://web.archive.org/web/20140102194005/http://www.kewbooks.co.uk/ kewbooks] {{color|green|At}} [https://web.archive.org/web/20140117072917/http://www.kew.org:80/about-kew/kew-publishing/index.htm Scientific Publications] {{color|green|At}} [http://www.kew.org/ Kew Gardens]
* [https://web.archive.org/web/20140102193712/http://www.kewbooks.co.uk/asps/ShowDetails.asp?id=440 World Checklist and Bibliography of Araliaceae] {{color|green|At}} [https://web.archive.org/web/20140102194127/http://www.kewbooks.co.uk/asps/Search.asp?types=yes&type=World+Checklists World Checklists] {{color|green|At}} [https://web.archive.org/web/20140102194005/http://www.kewbooks.co.uk/ kewbooks] {{color|green|At}} [https://web.archive.org/web/20140117072917/http://www.kew.org/about-kew/kew-publishing/index.htm Scientific Publications] {{color|green|At}} [http://www.kew.org/ Kew Gardens]
* [http://www.botany.si.edu/ing/INGsearch.cfm?searchword=Gastonia ''Gastonia''] {{color|green|At}} [http://www.botany.si.edu/ing/ Index Nominum Genericorum] {{color|green|At}} [http://www.botany.si.edu/index.htm?references References] {{color|green|At}} [http://www.botany.si.edu/index.htm NMNH Department of Botany] {{color|green|At}} [http://www.mnh.si.edu/rc/ Research and Collections] {{color|green|At}} [http://www.mnh.si.edu/ Smithsonian National Museum of Natural History]
* [http://www.botany.si.edu/ing/INGsearch.cfm?searchword=Gastonia ''Gastonia''] {{color|green|At}} [http://www.botany.si.edu/ing/ Index Nominum Genericorum] {{color|green|At}} [http://www.botany.si.edu/index.htm?references References] {{color|green|At}} [http://www.botany.si.edu/index.htm NMNH Department of Botany] {{color|green|At}} [http://www.mnh.si.edu/rc/ Research and Collections] {{color|green|At}} [http://www.mnh.si.edu/ Smithsonian National Museum of Natural History]
* [http://floramalesiana.org/ Flora Malesiana home page]
* [http://floramalesiana.org/ Flora Malesiana home page]
* [http://www.crcpress.com/product/isbn/9780849326769 CRC World Dictionary of Plant Names: D-L] At: [http://www.crcpress.com/ecommerce_product/browse_book_categories.jsf?category=LIF02A Botany & Plant Science] At: [http://www.crcpress.com/ecommerce_product/browse_book_categories.jsf?category=LIF Life Science] At: [http://www.crcpress.com/ CRC Press]
* [http://www.crcpress.com/product/isbn/9780849326769 CRC World Dictionary of Plant Names: D-L] At: [http://www.crcpress.com/ecommerce_product/browse_book_categories.jsf?category=LIF02A Botany & Plant Science] At: [http://www.crcpress.com/ecommerce_product/browse_book_categories.jsf?category=LIF Life Science] At: [http://www.crcpress.com/ CRC Press]
* [http://www.ipni.org/ipni/advPlantNameSearch.do?find_family=&find_genus=Gastonia+&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 ''Gastonia''] {{color|green|And:}} [http://www.ipni.org/ipni/advPlantNameSearch.do?find_family=&find_genus=Indokingia+&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 ''Indokingia''] {{color|green|And:}} [http://www.ipni.org/ipni/advPlantNameSearch.do;jsessionid=DD1742CDD3EA8BDB2C0DBA163E80C939?find_family=&find_genus=Peekeliopanax+&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 ''Peekeliopanax''] {{color|green|At:}} [http://www.ipni.org/ipni/plantnamesearchpage.do Plant Names] {{color|green|At:}} [http://www.ipni.org/ IPNI]
* [http://www.ipni.org/ipni/advPlantNameSearch.do?find_family=&find_genus=Gastonia+&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 ''Gastonia''] {{color|green|And:}} [http://www.ipni.org/ipni/advPlantNameSearch.do?find_family=&find_genus=Indokingia+&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 ''Indokingia''] {{color|green|And:}} [http://www.ipni.org/ipni/advPlantNameSearch.do;jsessionid=DD1742CDD3EA8BDB2C0DBA163E80C939?find_family=&find_genus=Peekeliopanax+&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 ''Peekeliopanax''] {{color|green|At:}} [http://www.ipni.org/ipni/plantnamesearchpage.do Plant Names] {{color|green|At:}} [http://www.ipni.org/ IPNI]
* [http://www.biodiversitylibrary.org/item/7125#page/312/mode/1up ''Gastonia'', page 217] {{color|green|At:}} [http://www.biodiversitylibrary.org/item/7125#page/1/mode/1up View Book] {{color|green|At:}} [http://www.biodiversitylibrary.org/bibliography/284#/summary ''Genera Plantarum'' &#91;Jussieu&#93;] {{color|green|At:}} [http://www.biodiversitylibrary.org/creator/343#/titles Jussieu, Antoine Laurent de, 1748-1836] {{color|green|At:}} [http://www.biodiversitylibrary.org/browse/authors/j J] {{color|green|At:}} [http://www.biodiversitylibrary.org/browse/authors/a Authors] {{color|green|At:}} [http://www.biodiversitylibrary.org/ BHL]
* [https://www.biodiversitylibrary.org/item/7125#page/312/mode/1up ''Gastonia'', page 217] {{color|green|At:}} [https://www.biodiversitylibrary.org/item/7125#page/1/mode/1up View Book] {{color|green|At:}} [https://www.biodiversitylibrary.org/bibliography/284#/summary ''Genera Plantarum'' &#91;Jussieu&#93;] {{color|green|At:}} [https://www.biodiversitylibrary.org/creator/343#/titles Jussieu, Antoine Laurent de, 1748-1836] {{color|green|At:}} [https://www.biodiversitylibrary.org/browse/authors/j J] {{color|green|At:}} [https://www.biodiversitylibrary.org/browse/authors/a Authors] {{color|green|At:}} [https://www.biodiversitylibrary.org/ BHL]
* [http://www.biodiversitylibrary.org/item/104410#page/620/mode/1up ''Gastonia'', page 610] {{color|green|At:}} [http://www.biodiversitylibrary.org/item/104410#page/9/mode/1up View Book] {{color|green|At:}} [http://www.biodiversitylibrary.org/bibliography/824#/summary Encyclopédie méthodique: botanique, volume 2, part 2] {{color|green|At:}} [http://www.biodiversitylibrary.org/creator/5739#/titles Lamarck, Jean-Baptiste Pierre Antoine de Monet de, 1744-1829] {{color|green|At:}} [http://www.biodiversitylibrary.org/browse/authors/l L] {{color|green|At:}} [http://www.biodiversitylibrary.org/browse/authors/a Authors] {{color|green|At:}} [http://www.biodiversitylibrary.org/ Biodiversity Heritage Library]
* [https://www.biodiversitylibrary.org/item/104410#page/620/mode/1up ''Gastonia'', page 610] {{color|green|At:}} [https://www.biodiversitylibrary.org/item/104410#page/9/mode/1up View Book] {{color|green|At:}} [https://www.biodiversitylibrary.org/bibliography/824#/summary Encyclopédie méthodique: botanique, volume 2, part 2] {{color|green|At:}} [https://www.biodiversitylibrary.org/creator/5739#/titles Lamarck, Jean-Baptiste Pierre Antoine de Monet de, 1744-1829] {{color|green|At:}} [https://www.biodiversitylibrary.org/browse/authors/l L] {{color|green|At:}} [https://www.biodiversitylibrary.org/browse/authors/a Authors] {{color|green|At:}} [https://www.biodiversitylibrary.org/ Biodiversity Heritage Library]
* [http://www.biodiversitylibrary.org/item/55643#page/15/mode/1up ''Indokingia'', tabula 2805] {{color|green|At:}} [http://www.biodiversitylibrary.org/item/55643#page/1/mode/1up View Book] {{color|green|At:}} [http://www.biodiversitylibrary.org/bibliography/16059#/summary Hooker's Icones Plantarum vol. 29 (1909)] {{color|green|At:}} [http://www.biodiversitylibrary.org/creator/10#/titles Hooker, Joseph Dalton, Sir, 1817-1911] {{color|green|At:}} [http://www.biodiversitylibrary.org/browse/authors/h H] {{color|green|At:}} [http://www.biodiversitylibrary.org/browse/authors/a Authors] {{color|green|At:}} [http://www.biodiversitylibrary.org/ BHL]
* [https://www.biodiversitylibrary.org/item/55643#page/15/mode/1up ''Indokingia'', tabula 2805] {{color|green|At:}} [https://www.biodiversitylibrary.org/item/55643#page/1/mode/1up View Book] {{color|green|At:}} [https://www.biodiversitylibrary.org/bibliography/16059#/summary Hooker's Icones Plantarum vol. 29 (1909)] {{color|green|At:}} [https://www.biodiversitylibrary.org/creator/10#/titles Hooker, Joseph Dalton, Sir, 1817-1911] {{color|green|At:}} [https://www.biodiversitylibrary.org/browse/authors/h H] {{color|green|At:}} [https://www.biodiversitylibrary.org/browse/authors/a Authors] {{color|green|At:}} [https://www.biodiversitylibrary.org/ BHL]
* [http://www.tropicos.org/Name/40012655 ''Gastonia''] <span style="color:green;">And</span> [http://www.tropicos.org/Name/40014323 ''Polyscias''] <span style="color:green;">At:</span> [http://www.tropicos.org/NameSearch.aspx Names] <span style="color:green;">At:</span> [http://www.tropicos.org Tropicos] <span style="color:green;">At:</span> [http://www.mobot.org/plantscience/default.asp Science and Conservation] <span style="color:green;">At:</span> [http://www.mobot.org Missouri Botanical Garden]
* [http://www.tropicos.org/Name/40012655 ''Gastonia''] <span style="color:green;">And</span> [http://www.tropicos.org/Name/40014323 ''Polyscias''] <span style="color:green;">At:</span> [http://www.tropicos.org/NameSearch.aspx Names] <span style="color:green;">At:</span> [http://www.tropicos.org Tropicos] <span style="color:green;">At:</span> [http://www.mobot.org/plantscience/default.asp Science and Conservation] <span style="color:green;">At:</span> [http://www.mobot.org Missouri Botanical Garden]
* [http://www.ars-grin.gov/cgi-bin/npgs/html/genus.pl?4856 ''Gastonia''] <span style="color:green;">And</span> [http://www.ars-grin.gov/cgi-bin/npgs/html/genus.pl?9728 ''Polyscias''] <span style="color:green;">At:</span> [https://web.archive.org/web/20000516145559/http://www.ars-grin.gov:80/cgi-bin/npgs/html/gnlist.pl?87 List of Genera] <span style="color:green;">At:</span> [http://www.ars-grin.gov/cgi-bin/npgs/html/family.pl?87 Araliaceae] <span style="color:green;">At:</span> [https://web.archive.org/web/20000816163915/http://www.ars-grin.gov:80/cgi-bin/npgs/html/famlist.pl List of families] <span style="color:green;">At:</span> [http://www.ars-grin.gov/cgi-bin/npgs/html/taxfam.pl?language=en Families and Genera in GRIN] <span style="color:green;">At:</span> [http://www.ars-grin.gov/cgi-bin/npgs/html/queries.pl?language=en Queries] <span style="color:green;">At:</span> [https://web.archive.org/web/20041015103620/http://www.ars-grin.gov/cgi-bin/npgs/html/index.pl GRIN taxonomy for plants]
* [http://www.ars-grin.gov/cgi-bin/npgs/html/genus.pl?4856 ''Gastonia''] <span style="color:green;">And</span> [http://www.ars-grin.gov/cgi-bin/npgs/html/genus.pl?9728 ''Polyscias''] <span style="color:green;">At:</span> [https://web.archive.org/web/20000516145559/http://www.ars-grin.gov/cgi-bin/npgs/html/gnlist.pl?87 List of Genera] <span style="color:green;">At:</span> [http://www.ars-grin.gov/cgi-bin/npgs/html/family.pl?87 Araliaceae] <span style="color:green;">At:</span> [https://web.archive.org/web/20000816163915/http://www.ars-grin.gov/cgi-bin/npgs/html/famlist.pl List of families] <span style="color:green;">At:</span> [http://www.ars-grin.gov/cgi-bin/npgs/html/taxfam.pl?language=en Families and Genera in GRIN] <span style="color:green;">At:</span> [http://www.ars-grin.gov/cgi-bin/npgs/html/queries.pl?language=en Queries] <span style="color:green;">At:</span> [https://web.archive.org/web/20041015103620/http://www.ars-grin.gov/cgi-bin/npgs/html/index.pl GRIN taxonomy for plants]
* [http://www.uniprot.org/taxonomy/48202 subgenus Grotefendia] {{color|green|And}} [http://www.uniprot.org/taxonomy/1368713 subgenus Maralia] {{color|green|And}} [http://www.uniprot.org/taxonomy/1368825 subgenus Indokingia] {{color|green|And}} [http://www.uniprot.org/taxonomy/48066 subgenus Tetraplasandra] {{color|green|At:}} [http://www.uniprot.org/taxonomy/46406 ''Polyscias''] {{color|green|At:}} [http://www.uniprot.org/taxonomy/4050 Araliaceae] {{color|green|At:}} [http://www.uniprot.org/taxonomy/364270 Apiineae] {{color|green|At:}} [http://www.uniprot.org/taxonomy/4036 Apiales] <span style="color:violet;">In: ···</span> [http://www.uniprot.org/taxonomy/3193 Embryophyta] <span style="color:green;">At:</span> [http://www.uniprot.org/taxonomy/131221 Streptophytina] <span style="color:green;">At:</span> [http://www.uniprot.org/taxonomy/35493 Streptophyta] <span style="color:green;">At:</span> [http://www.uniprot.org/taxonomy/33090 Viridiplantae] <span style="color:green;">At:</span> [http://www.uniprot.org/taxonomy/2759 Eukaryota] <span style="color:green;">At:</span> [http://www.uniprot.org/taxonomy/ Taxonomy] <span style="color:green;">At:</span> [http://www.uniprot.org/ UniProt]
* [https://www.uniprot.org/taxonomy/48202 subgenus Grotefendia] {{color|green|And}} [https://www.uniprot.org/taxonomy/1368713 subgenus Maralia] {{color|green|And}} [https://www.uniprot.org/taxonomy/1368825 subgenus Indokingia] {{color|green|And}} [https://www.uniprot.org/taxonomy/48066 subgenus Tetraplasandra] {{color|green|At:}} [https://www.uniprot.org/taxonomy/46406 ''Polyscias''] {{color|green|At:}} [https://www.uniprot.org/taxonomy/4050 Araliaceae] {{color|green|At:}} [https://www.uniprot.org/taxonomy/364270 Apiineae] {{color|green|At:}} [https://www.uniprot.org/taxonomy/4036 Apiales] <span style="color:violet;">In: ···</span> [https://www.uniprot.org/taxonomy/3193 Embryophyta] <span style="color:green;">At:</span> [https://www.uniprot.org/taxonomy/131221 Streptophytina] <span style="color:green;">At:</span> [https://www.uniprot.org/taxonomy/35493 Streptophyta] <span style="color:green;">At:</span> [https://www.uniprot.org/taxonomy/33090 Viridiplantae] <span style="color:green;">At:</span> [https://www.uniprot.org/taxonomy/2759 Eukaryota] <span style="color:green;">At:</span> [https://www.uniprot.org/taxonomy/ Taxonomy] <span style="color:green;">At:</span> [https://www.uniprot.org/ UniProt]


{{DEFAULTSORT:Gastonia (Plant)}}
{{DEFAULTSORT:Gastonia (Plant)}}
[[Category:Historically recognized angiosperm genera]]
[[Category:Historically recognized angiosperm genera]]
[[Category:Araliaceae]]
[[Category:Araliaceae]]
[[Category:Polyscias]]

Latest revision as of 00:52, 30 August 2024

Polyscias cutispongia (=Gastonia cutispongia)

Gastonia Commerson ex Lamarck is a formerly accepted genus of plants in the ivy and ginseng family, Araliaceae. It had been known as an unnatural group, but was recognized as late as 2010, when its nine species[1] were distributed to four different subgenera of the large genus Polyscias.[2] Because the genus Gastonia is now obsolete, its species are herein referred to by their names in Polyscias.

The species that constituted Gastonia are mostly island endemics, with Madagascar and New Guinea being the largest land masses on which any of them naturally occur. Gastonia had a disjunct distribution, with three species from the Seychelles, three more from the Mascarenes, one from Madagascar and the Comoro Islands, and two distributed from Malesia to the Solomon Islands.[3]

Gastonia is a genus of small to large size trees. It shares with related genera, the lack of an articulation on the pedicel, below the flower. It is distinguished from Reynoldsia, Munroidendron, and Tetraplasandra by the radiating style arms that persist on the fruit.[4]

Species

[edit]

Listed below are the nine species placed in Gastonia by Frodin and Govaerts (2003).[3] Names in Polyacias are from Lowry and Plunkett (2010).[2]

Notes on selected species

[edit]

Polyscias spectabilis is from New Guinea and the Solomon Islands. It sometimes exceeds 40 m (130 ft) in height, and is the tallest member of Araliaceae.[1] Like most members of Polyscias, P. spectabilis is sparingly branched, sometimes even palm-like in form, at least when young. Mature individuals of P. spectabilis are sometimes unbranched for 3/4 of the height of the tree.[3] Hermann Harms erected the monotypic genus Peekeliopanax for it in 1926,[5] but was not followed by other authors.

The type species for Gastonia is Gastonia cutispongia (now Polyscias cutispongia).[6] It is a tall, smooth tree with spongy bark. It is native to Réunion and sometimes planted there,[7] but it has become very rare.[3]

Polyscias maraisiana is endemic to Mauritius and was cultivated in Europe in the 19th century, but has not been seen there since that time.[3] It was considered exotic on account of its strikingly heteroblastic leaves.

Polyscias maraisiana has been the subject of some nomenclatural instability. In 1984, Wessel Marais separated it from Gastonia cutispongia as Gastonia mauritiana.[8] In 2003, it was shown that the correct name for this species was Gastonia elegans because it had first been described in 1866 as Terminalia elegans.[3] This description was a large and unexpected taxonomic error because Terminalia is in the Myrtalean family Combretaceae. In 2010, when this species was transferred to Polyscias, the specific epithet had to be changed again because the names Polyscias mauritiana and Polyscias elegans already existed. The latter two are in the Polyscias subgenera Grotefendia and Tieghemopanax, respectively.[2]

The most widespread and variable of the species in the former Gastonia is Polyscias serratifolia. It ranges thru most of Malesia and from there to the Solomon Islands. Some of its varieties have been named as separate species and placed in other genera, such as Arthrophyllum and Tetraplasandra. These were united into one species by Philipson, as Gastonia papuana in 1970,[9] and as Gastonia serratifolia in 1979.[10]

History

[edit]

Quattrocchi states that Gastonia was "named after Gaston d'Orléans, 1608-1660, a patron and promoter of botany and floriculture".[11] The name was originated by Philibert Commerson,[12][13] but validated later, in 1788, by Jean-Baptiste Lamarck in Encyclopédie Méthodique.[14]

Lamarck gave a detailed description of the species that he named Gastonia cutispongia. He named another species, but gave it only a cursory description. No one today is really sure of what the other species was. Some authors believe that it was not even a member of Araliaceae.

Other species were added to Gastonia in the 19th century. In 1898, Hermann Harms transferred what is now Polyscias sechellarum to Gastonia in a landmark monograph on Araliaceae in Die Natürlichen Pflanzenfamilien.[15]

William Raymond Philipson gave Gastonia its modern definition in 1970.[4] He included Malesian species that had been in Tetraplasandra, thus restricting that genus to the Hawaiian Islands. He also reduced the monotypic genera Indokingia (Polyscias crassa) and Peekeliopanax (Polyscias spectabilis) into synonymy under Gastonia.[4]

William Botting Hemsley had named Indokingia in 1906 in Hooker's Icones Plantarum.[16][17] Peekeliopanax was a name that Hermann Harms had applied to a flowering specimen in 1926. A few years later, he placed a fruiting specimen of the same species under Gastonia.[4]

In 2003, a checklist and nomenclator was published for Araliaceae by Kew Gardens.[3] Nine species were recognized therein for Gastonia. The genus was described as "generalized, altho in details, it is quite varied". Since that time, molecular phylogenetic studies, based on DNA sequences, have shown that Gastonia was polyphyletic.[18] These studies have shown that biogeography is strongly correlated with relationships in Araliaceae.

In 2010, the genus Polyscias was expanded from about 100 species to 159. The number of species in Polyscias will be around 250 when the undescribed species are published. Six genera (Arthrophyllum, Cuphocarpus, Gastonia, Reynoldsia, Munroidendron, and Tetraplasandra) were placed in synonymy under Polyscias. In accordance with the phylogenetic studies of DNA, Polyscias was divided into 11 subgenera (Polyscias, Grotefendia, Maralia, Arthrophyllum, Cuphocarpus, Tetraplasandra, Eupteron, Sciadopanax, Tieghemopanax, Indokingia, and Palmervandenbroekia) and seven species were left incertae sedis.[2]

The nine species that had been in Gastonia went to four different subgenera of Polyscias; three species went to Grotefendia, three more to Indokingia, two to Tetraplasandra, and one to Maralia.

Polyscias cutispongia, Polyscias maraisiana, and Polyscias rodriguesiana are endemic to Réunion, Mauritius, and Rodrigues, respectively. The latter two were separated from P. cutispongia in 1984.[8] They are in ''Polyscias'' subgenus Grotefendia, which comprises 15 species, all from the Mascarene Islands. The type species for Polyscias subgenus Grotefendia is Polyscias repanda.

Polyscias subgenus Grotefendia contains Polyscias cutispongia, the type species for Gastonia. If the subgenus Grotefendia were to be raised to the taxonomic rank of genus, the name Gastonia would have priority over Grotefendia, according to the ICNAFP.[2]

Polyscias crassa, Polyscias sechellarum, and Polyscias lionnetii are all from the Seychelles, with Polyscias lionnetii being very rare and restricted to the island of Mahé. These are the only species of Polyscias in the Seychelles, and together, they constitute ''Polyscias'' subgenus Indokingia. "Polyscias seychellarum" is an orthographical variant of Polyscias sechellarum. Polyscias sechellarum was divided into three varieties in 1987,[19] but some authors have declined to recognize them until further studies can be done on this species.

Polyscias duplicata (formerly Gastonia duplicata) is in ''Polyscias'' subgenus Maralia. Maralia is, by far, the largest subgenus of Polyscias, with about 115 species. Most of them, like Polyscias duplicata, are endemic to Madagascar.

Polyscias serratifolia and Polyscias spectabilis are now in ''Polyscias'' subgenus Tetraplasandra. This is a wide-ranging subgenus of 21 species. Eleven species are endemic to Hawaii, and ten others are distributed in a large area that includes Malesia and extends eastward to Tahiti.[2]

References

[edit]
  1. ^ a b Mabberley, D.J. (2008). Mabberley's Plant-book A Portable Dictionary of Plants, Their Classifications, and Uses. Cambridge University Press. ISBN 978-0-521-82071-4.
  2. ^ a b c d e f Porter P. Lowry II and Gregory M. Plunkett. 2010. "Recircumscription of Polyscias (Araliaceae) to include six related genera, with a new infrageneric classification and a synopsis of species". Plant Diversity and Evolution (formerly Botanische Jahrbucher) 128(1-2):55-84. doi:10.1127/1869-6155/2010/0128-0003. (See External links below).
  3. ^ a b c d e f g David G. Frodin; Rafaël Govaerts (2003). World Checklist and Bibliography of Araliaceae. Royal Botanic Gardens Kew. ISBN 978-1-84246-048-1.
  4. ^ a b c d William R. Philipson. 1970. "A redefinition of Gastonia and related genera (Araliaceae)". Blumea 18(2):497-505.
  5. ^ Peekeliopanax in International Plant Names Index. (see External links below).
  6. ^ Gastonia In: Index Nominum Genericorum. In: Regnum Vegetabile (see External links below).
  7. ^ Royal Horticultural Society (Great Britain) (1992). Dictionary of gardening. ISBN 978-0-333-47494-5.
  8. ^ a b Wessel Marais. 1984. "Notes on Mascarene Araliaceae". Kew Bulletin 39(4):809-816.
  9. ^ William R. Philipson. 1970. "The Malesian species of Gastonia (Araliaceae)". Blumea 18(2):491-495.
  10. ^ Cornelis Gijsbert Gerrit Jan van Steenis; Maria Johanna van Steenis-Kruseman; Willem Jan Jacobus Oswald Wilde (1979). Flora Malesiana. Series I. Spermatophyta Being an Illustrated Systematic Account of the Malaysian Flora Including Keys for Determination, Diagnostic Descriptions, References to the Literature, Synonymy, and Distribution, and Notes on the Ecology of Its Wild and Commonly. Plants. ISBN 978-90-286-0629-6.
  11. ^ Quattrocchi, Umberto (1999). CRC World Dictionary of Plant Names Common Names, Scientific Names, Eponyms, Synonyms, and Etymology. Taylor & Francis US. ISBN 978-0-8493-2676-9.
  12. ^ Gastonia in International Plant Names Index. (see External links below).
  13. ^ Antoine Laurent de Jussieu (1789). Antonii Laurentii de Jussieu. Genera plantarum secundum ordines naturales disposita, juxta methodum in Horto regio Parisiensi exaratam, anno M. DCC. LXXIV. Apud Viduam Herissant, typographum.
  14. ^ Jean-Baptiste Lamarck. 1788. Encyclopédie Méthodique: Botanique 2(2):610. (See External links below).
  15. ^ Hermann A.T. Harms. 1898. "Araliaceae". pages 1-62. In: H.G Adolf Engler and Karl A.E. Prantl. Die Natürlichen Pflanzenfamilien III.Teil. 8. Abteilung. (volume 3, part 8). Verlag von Wilhelm Engelmann: Leipzig, Germany.
  16. ^ Indokingia in International Plant Names Index. (see External links below).
  17. ^ William B. Hemsley. 1909. Hooker's Icones Plantarum volume 29 (volume IX of series 4), tabula (plate) 2805 and following text. (See External links below).
  18. ^ Gregory M. Plunkett and Porter P. Lowry II. 2010. "Paraphyly and polyphyly in Polyscias sensu lato: molecular evidence and the case for recircumscribing the "pinnate genera" of Araliaceae". Plant Diversity and Evolution (formerly Botanische Jahrbucher) 128(1-2):23-54. doi:10.1127/1869-6155/2010/0128-0002.
  19. ^ Francis Friedmann. 1987. Bulletin du Muséum National d'Histoire Naturelle. Section B, Adansonia Séries 4, 8(3): 251

Sources

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Gregory M. Plunkett, Jun Wen, Porter P. Lowry II, Murray J. Henwood, Pedro Fiaschi, and Anthony D. Mitchell. accepted, undated. Araliaceae, pages ??. In: Klaus Kubitzki (editor); ?? (volume editor). The Families and Genera of Vascular Plants volume ??. Springer-Verlag: Berlin; Heidelberg, Germany. ISBN ??

[edit]
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