Apostasioideae: Difference between revisions

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'''Apostasioideae''' is one of the five subfamilies recognised within the orchid family, [[Orchidaceae]].<ref name="ChaseCameron2015"/> Only two [[genera]], ''[[Neuwiedia]]'' and [[Apostasia (plant)|''Apostasia'']], and 15 [[species]], are recognised within the Apostasioideae in contrast to the other orchid subfamilies which are highly species rich.
The subfamily '''Apostasioideae''' is one of five subfamilies recognised within the orchid family, [[Orchidaceae]].<ref name="ChaseCameron2015"/> Compared to the other orchid subfamilies, it is relatively species-poor, with only two [[genera]] (''[[Neuwiedia]]'' and [[Apostasia (plant)|''Apostasia'']]) and 15 [[species]].


The Apostasioideae are generally considered a basal lineage within the orchids<ref>{{Cite journal |last1=Kocyan |first1=A. |last2=Qiu |first2=Y.-L. |last3=Endress |first3=P.K. |last4=Conti |first4=E. |date=August 2004 |title=A phylogenetic analysis of Apostasioideae (Orchidaceae) based on ITS, trnL-F and matK sequences |journal=Plant Syst. Evol. |volume=247 |issue=3/4 |pages=203–213 |doi=10.1007/s00606-004-0133-3  |bibcode=2004PSyEv.247..203K |url=https://www.zora.uzh.ch/id/eprint/156371/1/ZORA_NL_156371.pdf |name-list-style=amp }}</ref> based on molecular data and flower structure. All other orchid subfamilies with the exception of the [[Cypripedioideae]] are [[monandrous]] (possessing a single [[stamen]]), however Apostasioid orchids have 3 stamens.
Members of the subfamily are terrestrial plants found only in humid areas of northern Australia, Southeast Asia, Malaysia, and Japan.<ref>{{Cite journal |last=Jersáková |first=Jana |last2=Trávníček |first2=Pavel |last3=Kubátová |first3=Barbora |last4=Krejčíková |first4=Jana |last5=Urfus |first5=Tomáš |last6=Liu |first6=Zhong-Jian |last7=Lamb |first7=Anthony |last8=Ponert |first8=Jan |last9=Schulte |first9=Katharina |last10=Čurn |first10=Vladislav |last11=Vrána |first11=Jan |last12=Leitch |first12=Ilia J. |last13=Suda |first13=Jan |date=May 2013 |title=Genome size variation in Orchidaceae subfamily Apostasioideae: filling the phylogenetic gap: Genome Size in Apostasioideae |url=https://academic.oup.com/botlinnean/article-lookup/doi/10.1111/boj.12027 |journal=Botanical Journal of the Linnean Society |language=en |volume=172 |issue=1 |pages=95–105 |doi=10.1111/boj.12027}}</ref>  


As with all basal or 'primitive' groups, [[extant taxon|extant]] species within Apostasioideae do not represent direct ancestors of the other subfamilies, they simply share the same common ancestor. However, by having followed a separate evolutionary pathway from the other orchids extant Apostasioid orchids may allow biologists to make inferences about features present in that common ancestor.<ref>{{cite journal|author = Stern, W. L. |author2=V. Cheadle |author3=J. Thorsch|year = 1993| title = Apostasiads, systematic anatomy, and the origins of Orchidaceae| journal = Botanical Journal of the Linnean Society|volume = 111|issue = 4|pages = 411–445 | doi=10.1111/j.1095-8339.1993.tb01913.x}}</ref>
The Apostasioideae are generally considered to be the [[sister group]] to all other orchid lineages<ref>{{Cite journal |last=Zhang |first=Guojin |last2=Hu |first2=Yi |last3=Huang |first3=Ming‐Zhong |last4=Huang |first4=Wei‐Chang |last5=Liu |first5=Ding‐Kun |last6=Zhang |first6=Diyang |last7=Hu |first7=Haihua |last8=Downing |first8=Jason L. |last9=Liu |first9=Zhong‐Jian |last10=Ma |first10=Hong |date=May 2023 |title=Comprehensive phylogenetic analyses of Orchidaceae using nuclear genes and evolutionary insights into epiphytism |url=https://onlinelibrary.wiley.com/doi/10.1111/jipb.13462 |journal=Journal of Integrative Plant Biology |language=en |volume=65 |issue=5 |pages=1204–1225 |doi=10.1111/jipb.13462 |issn=1672-9072}}</ref><ref>{{Cite journal |last1=Kocyan |first1=A. |last2=Qiu |first2=Y.-L. |last3=Endress |first3=P.K. |last4=Conti |first4=E. |date=August 2004 |title=A phylogenetic analysis of Apostasioideae (Orchidaceae) based on ITS, trnL-F and matK sequences |journal=Plant Syst. Evol. |volume=247 |issue=3/4 |pages=203–213 |doi=10.1007/s00606-004-0133-3  |bibcode=2004PSyEv.247..203K |url=https://www.zora.uzh.ch/id/eprint/156371/1/ZORA_NL_156371.pdf |name-list-style=amp }}</ref> based on molecular data and flower structure. All other orchid subfamilies with the exception of the [[Cypripedioideae]] are [[monandrous]] (possessing a single [[stamen]]), whereas Apostasioid orchids have 3 stamens.


==References==
==References==

Latest revision as of 23:59, 31 December 2025

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The subfamily Apostasioideae is one of five subfamilies recognised within the orchid family, Orchidaceae.[1] Compared to the other orchid subfamilies, it is relatively species-poor, with only two genera (Neuwiedia and Apostasia) and 15 species.

Members of the subfamily are terrestrial plants found only in humid areas of northern Australia, Southeast Asia, Malaysia, and Japan.[2]

The Apostasioideae are generally considered to be the sister group to all other orchid lineages[3][4] based on molecular data and flower structure. All other orchid subfamilies with the exception of the Cypripedioideae are monandrous (possessing a single stamen), whereas Apostasioid orchids have 3 stamens.

References

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Bibliography

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  • Pridgeon, A.M.; Cribb, P.J.; Chase, M.W. & F. N. Rasmussen (1999): Genera Orchidacearum Vol.1, Oxford U. Press. Template:ISBN

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