{{Short description|Subfamily of ferns}} {{Automatic taxobox | image = Lepisorus thunbergianus (Kaulf.) Ching,ノキシノブ、himeji,姫路城P7047462.jpg | image_caption = ''Lepisorus thunbergianus'' in Japan | taxon = Microsoroideae | authority = B.K.Nayar | subdivision_ranks = Genera | subdivision = See text. | synonyms = }}
'''Microsoroideae''' is a subfamily in the fern family Polypodiaceae in the Pteridophyte Phylogeny Group classification of 2016 (PPG I).<ref name=PPGI/> The subfamily is also treated as the tribe '''Microsoreae''' within a very broadly defined family Polypodiaceae ''sensu lato''.<ref name=ChriChas14/> In either treatment, it includes the previously separated tribe '''Lepisoreae'''.
==Taxonomy== The taxonomy of the subfamily Microsoroideae has been described as "highly problematic".<ref name=TestFielSessSund19/> The division into genera varies considerably. The Pteridophyte Phylogeny Group classification of 2016 (PPG I) recognized the following genera, while accepting that some needed further evaluation:<ref name=PPGI/> {{div col|colwidth=20em}} :*''Goniophlebium'' <small>(Blume) C.Presl</small> :*''Lecanopteris'' <small>Reinw. ex Blume</small> :*''Lemmaphyllum'' <small>C.Presl</small> :*''Lepidomicrosorium'' <small>Ching & K.H.Shing</small> :*''Lepisorus'' <small>(J.Sm.) Ching</small> :*''Leptochilus'' <small>Kaulf.</small> (including ''Kontumia'') :*''Microsorum'' <small>Link</small> (including ''Dendroconche'', ''Kaulinia'') :*''Neocheiropteris'' <small>Christ.</small> :*''Neolepisorus'' <small>Ching</small> :*''Paragramma'' <small>(Blume) T.Moore</small> :*''Thylacopteris'' <small>Kunze ex J.Sm.</small> :*''Tricholepidium'' <small>Ching</small> {{div col end}}
A molecular phylogenetic study in 2019 suggested the following relationship between the PPG I genera (''Thylacopteris'' was not included in the study):<ref name=TestFielSessSund19/> {{Barlabel |size=11 |at1=2.5|label1=''Lepisorus'' s.l.|bar1=darkgreen |at2=8.5|label2=''Lecanopteris'' s.l.|bar2=green |cladogram= {{clade |label1=Microsoroideae |1={{clade |1={{clade |1={{clade |1={{clade |1={{clade |1=''Lemmaphyllum''|barbegin1=darkgreen |2=''Lepidomicrosorium'' + ''Neocheiropteris'' + ''Neolepisorus'' + ''Tricholepidium'' |bar2=darkgreen }} |2={{clade |1=''Lepisorus'' s.s.|bar1=darkgreen |2=''Paragramma'' (as ''Lepisorus longifolius'')|barend2=darkgreen }} }} |2={{clade |1=''Microsorum'' |2=''Leptochilus'' }} }} |2={{clade |1=''Bosmania''|barbegin1=green |2={{clade |1=''Dendroconche''|bar1=green |2={{clade |1=''Zealandia''|bar1=green |2=''Lecanopteris''|barend2=green }} }} }} }} |2=''Goniophlebium'' }} }} }}
Species placed in the PPG I genera ''Lepidomicrosorium'', ''Neocheiropteris'', ''Neolepisorus'' and ''Tricholepidium'' were intermingled in a single clade. Although ''Lemmaphyllum'' and ''Lepisorus'' s.s. were monophyletic, the authors suggested a single broadly circumscribed ''Lepisorus'' s.l. for all of these genera. Three clades, mainly comprising species previously placed in ''Microsorum'', were closely related to ''Lecanopteris'' s.s. and distinct from other clades in the subfamily. Rather than expanding the circumscription of ''Lecanopteris'', the authors of the study preferred to use four genera, reviving ''Dendroconche'' and erecting two new genera ''Bosmania'' and ''Zealandia''.<ref name=TestFielSessSund19/>
{{As of|2020|February}}, ''Lepisorus'' s.l. and ''Lecanopteris'' s.l. are treated differently by PPG I, the ''Checklist of Ferns and Lycophytes of the World'' (CFLW) and ''Plants of the World Online'' (PoWO), as shown in the following tables.<ref name=CFLW/><ref name=POWO/> {| class="wikitable" |+Alternative treatments of ''Lepisorus'' s.l. |- ! PPG I !! CFLW !! PoWO |- | ''Lemmaphyllum'' || ''Lemmaphyllum'' || ''Lemmaphyllum'' |- | ''Neocheiropteris'' || ''Neocheiropteris'' ||rowspan=2| ''Neocheiropteris'' |- | ''Neolepisorus'' || ''Neolepisorus'' |- | ''Tricholepidium'' ||rowspan=2| ''Tricholepidium'' ||rowspan=2| ''Tricholepidium'' |- | ''Lepidomicrosorium'' |- | ''Lepisorus'' || ''Lepisorus'' ||rowspan=2| ''Lepisorus'' |- | ''Paragramma'' || ''Paragramma'' |}
{| class="wikitable" |+Alternative treatments of ''Lecanopteris'' s.l. |- ! PPG I !! CFLW !! PoWO |- | syn. of ''Microsorum'' || ''Dendroconche'' || syn. of ''Microsorum'' |- |rowspan=2| Not recognized || ''Bosmania'' ||rowspan=2| Not recognized |- | ''Zealandia'' |- | ''Lecanopteris'' || ''Lecanopteris''|| ''Lecanopteris'' |}
==References== {{Reflist|refs= <ref name=CFLW>{{Citation |last1=Hassler |first1=Michael |last2=Schmitt |first2=Bernd |date=January 2020 |title=Checklist of Ferns and Lycophytes of the World |at=Version 8.20 |url=https://worldplants.webarchiv.kit.edu/ferns/ |access-date=2020-02-11 |name-list-style=amp }}</ref>
<ref name=ChriChas14>{{Cite journal |last1=Christenhusz |first1=Maarten J.M. |last2=Chase |first2=Mark W. |date=2014 |title=Trends and concepts in fern classification |journal=Annals of Botany |volume=113 |issue=9 |pages=571–594 |doi=10.1093/aob/mct299 |pmid=24532607 |pmc=3936591 |name-list-style=amp }}</ref>
<ref name=POWO>{{citation |title=Plants of the World Online |publisher=Royal Botanic Gardens, Kew|url=http://www.plantsoftheworldonline.org |archive-url=https://web.archive.org/web/20170322171139/http://plantsoftheworldonline.org/ |url-status=dead |archive-date=March 22, 2017 |access-date=2020-02-11 }}</ref>
<ref name=PPGI>{{citation |mode=cs1|author=PPG I |year=2016 |title=A community-derived classification for extant lycophytes and ferns |journal=Journal of Systematics and Evolution |volume=54 |issue=6 |pages=563–603 |doi=10.1111/jse.12229|s2cid=39980610 |doi-access=free |bibcode=2016JSyEv..54..563. }}</ref>
<ref name=TestFielSessSund19>{{Citation |last1=Testo |first1=Weston L. |last2=Field |first2=Ashley R. |last3=Sessa |first3=Emily B. |last4=Sundue |first4=Michael |date=2019 |title=Phylogenetic and Morphological Analyses Support the Resurrection of ''Dendroconche'' and the Recognition of Two New Genera in Polypodiaceae Subfamily Microsoroideae |journal=Systematic Botany |volume=44 |issue=4 |pages=737–752 |url=http://sites.clas.ufl.edu/bio-sessalab/files/SysBot2019.pdf |access-date=2020-02-11 |doi=10.1600/036364419X15650157948607 |bibcode=2019SysBo..44..737T |s2cid=208176686 |name-list-style=amp }}</ref> }}
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* Category:Plant subfamilies
{{Polypodiaceae-stub}}