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<document ID-DOI="http://dx.doi.org/10.3897/phytokeys.176.62552" ID-GBIF-Dataset="3bb8f2bd-8bea-4b04-aacf-f71ac54df345" ID-PMC="PMC8065019" ID-Pensoft-Pub="1314-2003-176-77" ID-Pensoft-UUID="3174A4086CD45B098F6AD180AAF82517" ID-PubMed="33958941" ModsDocID="1314-2003-176-77" checkinTime="1618619346549" checkinUser="pensoft" docAuthor="Bakalin, Vadim, Choi, Seung Se &amp; Park, Seung Jin" docDate="2021" docId="9EC5966716E057308D44CF56ABF9F58A" docLanguage="en" docName="PhytoKeys 176: 77-110" docOrigin="PhytoKeys 176" docPubDate="2021-04-16" docSource="http://dx.doi.org/10.3897/phytokeys.176.62552" docTitle="Marsupella yakushimensis S. Hatt., Bull. Tokyo Sci. Mus. 11: 80 1944" docType="treatment" docVersion="4" id="3174A4086CD45B098F6AD180AAF82517" lastPageNumber="77" masterDocId="3174A4086CD45B098F6AD180AAF82517" masterDocTitle="Revision of Gymnomitriaceae (Marchantiophyta) in the Korean Peninsula" masterLastPageNumber="110" masterPageNumber="77" pageNumber="77" updateTime="1668142408493" updateUser="ExternalLinkService">
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo>
<mods:title>Revision of Gymnomitriaceae (Marchantiophyta) in the Korean Peninsula</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Bakalin, Vadim</mods:namePart>
<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0001-7897-4305</mods:nameIdentifier>
<mods:affiliation>Botanical Garden-Institute, Vladivostok, 690024, Russia</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Choi, Seung Se</mods:namePart>
<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0002-3332-5544</mods:nameIdentifier>
<mods:affiliation>Department of Natural Environment Research, National Institute of Ecology, Seocheon, Chungcheongnam-do, 33657, South Korea</mods:affiliation>
<mods:nameIdentifier type="email">hepaticae@jbnu.ac.kr</mods:nameIdentifier>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Park, Seung Jin</mods:namePart>
<mods:affiliation>Department of Biological Sciences, Jeonbuk National University, Jeonju, Jeollabuk-do, 54896, South Korea</mods:affiliation>
</mods:name>
<mods:typeOfResource>text</mods:typeOfResource>
<mods:relatedItem type="host">
<mods:titleInfo>
<mods:title>PhytoKeys</mods:title>
</mods:titleInfo>
<mods:part>
<mods:date>2021</mods:date>
<mods:detail type="pubDate">
<mods:number>2021-04-16</mods:number>
</mods:detail>
<mods:detail type="volume">
<mods:number>176</mods:number>
</mods:detail>
<mods:extent unit="page">
<mods:start>77</mods:start>
<mods:end>110</mods:end>
</mods:extent>
</mods:part>
</mods:relatedItem>
<mods:location>
<mods:url>http://dx.doi.org/10.3897/phytokeys.176.62552</mods:url>
</mods:location>
<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">http://dx.doi.org/10.3897/phytokeys.176.62552</mods:identifier>
<mods:identifier type="Pensoft-Pub">1314-2003-176-77</mods:identifier>
<mods:identifier type="Pensoft-UUID">3174A4086CD45B098F6AD180AAF82517</mods:identifier>
</mods:mods>
<treatment ID-GBIF-Taxon="181024593" LSID="urn:lsid:plazi:treatment:9EC5966716E057308D44CF56ABF9F58A" httpUri="http://treatment.plazi.org/id/9EC5966716E057308D44CF56ABF9F58A" lastPageNumber="77" pageId="0" pageNumber="77">
<subSubSection pageId="0" pageNumber="77" type="nomenclature">
<paragraph pageId="0" pageNumber="77">
<taxonomicName LSID="9EC59667-16E0-5730-8D44-CF56ABF9F58A" authority="(Horik.) S. Hatt., Bull. Tokyo Sci. Mus. 11: 80, 1944" authorityName="S. Hatt., Bull. Tokyo Sci. Mus. 11: 80" authorityYear="1944" baseAuthorityName="Horik." class="Hepaticae" family="Gymnomitriaceae" genus="Marsupella" higherTaxonomySource="treatment-meta" kingdom="Plantae" lsidName="Marsupella yakushimensis" order="Jungermanniales" pageId="0" pageNumber="77" phylum="Marchantiophyta" rank="species" species="yakushimensis">Marsupella yakushimensis (Horik.) S.Hatt., Bull. Tokyo Sci. Mus. 11: 80, 1944</taxonomicName>
<figureCitation captionStart="Figure 8" captionStartId="F8" captionText="Figure 8. Marsupella yakushimensis (Horik.) S. Hatt. A plant, dorsal view B stem cross section (fragment) C cells along leaf margin D midleaf cells E-H leaves. Scale bars: a 2 mm (A); b 1 mm (E-H); c 100 µm (B-D). All from Choi- 1067 (JNU)." figureDoi="10.3897/phytokeys.176.62552.figure8" httpUri="https://binary.pensoft.net/fig/532353" pageId="0" pageNumber="77">Figure 8</figureCitation>
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="77" type="reference_group">
<paragraph pageId="0" pageNumber="77">
<taxonomicName class="Jungermanniopsida" family="Gymnomitriaceae" genus="Sphenolobus" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Sphenolobus yakushimensis" order="Jungermanniales" pageId="0" pageNumber="77" phylum="Marchantiophyta" rank="species" species="yakushimensis">Sphenolobus yakushimensis</taxonomicName>
Basionym.
<taxonomicName class="Jungermanniopsida" family="Gymnomitriaceae" genus="Sphenolobus" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Sphenolobus yakushimensis" order="Jungermanniales" pageId="0" pageNumber="77" phylum="Marchantiophyta" rank="species" species="yakushimensis">Sphenolobus yakushimensis</taxonomicName>
Horik., J. Sci. Hiroshima Univ., Ser. B, Div. 2, Bot. 2: 156, 1934
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="77" type="materials_examined">
<paragraph pageId="0" pageNumber="77">
<typeStatus>Type</typeStatus>
.
</paragraph>
<paragraph pageId="0" pageNumber="77">
<materialsCitation ID-GBIF-Occurrence="3079225316" collectingDate="2021-01-01" collectingDateMax="2021-12-31" collectingDateMin="2021-01-01" country="Japan" location="Yakushima Island" specimenCount="1" stateProvince="Kagoshima Pref." typeStatus="holotype">
<collectingCountry name="Japan">Japan</collectingCountry>
.
<collectingRegion country="Japan" name="Kagoshima">Kagoshima Pref.</collectingRegion>
,
<location LSID="urn:lsid:plazi:treatment:9EC5966716E057308D44CF56ABF9F58A:4AA078A710BB06509D70DA2D51F8CA5D" country="Japan" name="Yakushima Island" stateProvince="Kagoshima Pref.">Yakushima Island</location>
, Horikawa, 11895 (not seen)
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="77" type="description">
<paragraph pageId="0" pageNumber="77">Description.</paragraph>
<paragraph pageId="0" pageNumber="77">
Plants in loose patches, deep green-brown, yellow-brown, yellowish brownish, rarely with purple tint, (1.0)1.5-2.1 mm wide and 15.0-50.0 mm long, rigid. Rhizoids nearly absent to very sparse, colorless, obliquely spreading, however common in basal part of ventral branches and leafless stolons. Stem easily laterally and ventrally branched giving start to normal branches or geotropic leafless stolons; stem transversely elliptic in cross section 210.0-240.0
<normalizedToken originalValue="μm">μm</normalizedToken>
high and 250.0-320.0
<normalizedToken originalValue="μm">μm</normalizedToken>
wide, distinctly differentiated into strata, hyaloderm cell walls moderately thickened (but external wall thin), with small concave trigones, 17.0-25.0
<normalizedToken originalValue="μm">μm</normalizedToken>
along margin, scleroderm cells with very thick walls and visible median lamina, 12.0-17.0
<normalizedToken originalValue="μm">μm</normalizedToken>
in diameter, but with lumen disappearing or only 2.0-6.0
<normalizedToken originalValue="μm">μm</normalizedToken>
in diameter, inner cells with moderately thickened walls and moderate in size, concave trigones, 10.0-15.0
<normalizedToken originalValue="μm">μm</normalizedToken>
in diameter. Leaves strongly conduplicate and distichously arranged that gives
<normalizedToken originalValue="scapanioid">'scapanioid'</normalizedToken>
appearance, contiguous to imbricate, as a rule enclosed one to another, obliquely spreading and transversely oriented, when flattened subquadrate, rectangular or obovate to suborbicular (mostly wider than long, but sometimes longer than wide), bistratose in lower 1/5-1/6 of the leaf length, 675.0-1250.0
<normalizedToken originalValue="μm">μm</normalizedToken>
long and 800.0-1500.0
<normalizedToken originalValue="μm">μm</normalizedToken>
wide, commonly dorsally secund, divided by
<emphasis bold="true" pageId="0" pageNumber="77">
<normalizedToken originalValue="γ">γ</normalizedToken>
</emphasis>
-shaped sinus descending to 1/4-2/5 of leaf length into two equal to subequal lobes (either ventral or dorsal may be smaller), lobes gibbous, with obtuse to acute or rarely rounded apex. Cells in the midleaf subisodiametric to (mostly) oblong, 12.0-25.0
<normalizedToken originalValue="×">x</normalizedToken>
7.0-20.0
<normalizedToken originalValue="μm">μm</normalizedToken>
, strongly thick-walled, with moderate to small, concave trigones, cuticle smooth; cells along leaf margin 7.0-10.0
<normalizedToken originalValue="μm">μm</normalizedToken>
, thick-walled (but with much thinner external wall), with moderate in size, concave trigones; cells in lobe middle 10.0-17.0
<normalizedToken originalValue="×">x</normalizedToken>
8.0-15.0
<normalizedToken originalValue="μm">μm</normalizedToken>
, thick-walled, with small to moderate in size, concave trigones, cuticle smooth. Dioicous. Androecia intercalary, with 2-3 pairs of bracts, spoon-shaped, with revolute margin and commonly deflexed lobe ends. Perianth (only unfertilized were found) hidden within bracts, onion-shaped, perigynium the same length with perianth or slightly longer, with 2 pairs of bracts and 1-3 lateral and ventral subfloral innovations.
</paragraph>
<caption doi="10.3897/phytokeys.176.62552.figure8" httpUri="https://binary.pensoft.net/fig/532353" pageId="0" pageNumber="77" start="Figure 8" startId="F8">
<paragraph pageId="0" pageNumber="77">
<emphasis bold="true" pageId="0" pageNumber="77">Figure 8.</emphasis>
<taxonomicName authorityName="S. Hatt., Bull. Tokyo Sci. Mus. 11: 80" authorityYear="1944" baseAuthorityName="Horik." class="Hepaticae" family="Gymnomitriaceae" genus="Marsupella" kingdom="Plantae" lsidName="Marsupella yakushimensis" order="Jungermanniales" pageId="0" pageNumber="77" phylum="Marchantiophyta" rank="species" species="yakushimensis">
<emphasis italics="true" pageId="0" pageNumber="77">Marsupella yakushimensis</emphasis>
</taxonomicName>
(Horik.) S.Hatt.
<emphasis bold="true" pageId="0" pageNumber="77">A</emphasis>
plant, dorsal view
<emphasis bold="true" pageId="0" pageNumber="77">B</emphasis>
stem cross section (fragment)
<emphasis bold="true" pageId="0" pageNumber="77">C</emphasis>
cells along leaf margin
<emphasis bold="true" pageId="0" pageNumber="77">D</emphasis>
midleaf cells
<emphasis bold="true" pageId="0" pageNumber="77">E-H</emphasis>
leaves. Scale bars: a 2 mm (
<emphasis bold="true" pageId="0" pageNumber="77">A</emphasis>
); b 1 mm (
<emphasis bold="true" pageId="0" pageNumber="77">E-H</emphasis>
); c 100
<normalizedToken originalValue="µm">µm</normalizedToken>
(
<emphasis bold="true" pageId="0" pageNumber="77">B-D</emphasis>
). All from
<emphasis italics="true" pageId="0" pageNumber="77">Choi-1067</emphasis>
(JNU).
</paragraph>
</caption>
</subSubSection>
<subSubSection pageId="0" pageNumber="77" type="ecology">
<paragraph pageId="0" pageNumber="77">Ecology.</paragraph>
<paragraph pageId="0" pageNumber="77">
Acidophilic hygro- to hydrophyte. The species occurs on wet cliffs at a distance from watercourses or on stones washed with sluggishly running water in partly shaded habitats in the middle elevation of mountains covered with evergreen to deciduous broadleaved forests. Commonly, the species forms pure patches or rarer, associated with
<taxonomicName authorityName="Dumortier" authorityYear="1835" baseAuthorityName="L." class="Hepaticae" family="Scapaniaceae" genus="Scapania" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="Scapania undulata" order="Jungermanniales" pageId="0" pageNumber="77" phylum="Bryophyta" rank="species" species="undulata">
<emphasis italics="true" pageId="0" pageNumber="77">Scapania undulata</emphasis>
</taxonomicName>
.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="77" type="distribution">
<paragraph pageId="0" pageNumber="77">Distribution.</paragraph>
<paragraph pageId="0" pageNumber="77">
South temperate to subtropical Montane East Asian endemic species known in China (Anhui, Fujian, Guangdong, Jiangxi, Zhejiang), the southern part of the Korean peninsula (the report by
<bibRefCitation author="Kim, YH" journalOrPublisher="Publishing House of Science on Encyclopodia, Pyongyang" pageId="0" pageNumber="77" refId="B9" refString="Kim, YH, Hwang, HJ, 1991. Korean Spore Plant 8 (Hepaticae). Publishing House of Science on Encyclopodia, Pyongyang" title="Korean Spore Plant 8 (Hepaticae)." year="1991">Kim and Hwang (1991)</bibRefCitation>
for North Korea is doubtful) and the southern half of Japan. The species was reported from Gyeongsangnam-do, Gangwon-do, Gyeongbuk-do (
<bibRefCitation author="Kim, YH" journalOrPublisher="Publishing House of Science on Encyclopodia, Pyongyang" pageId="0" pageNumber="77" refId="B9" refString="Kim, YH, Hwang, HJ, 1991. Korean Spore Plant 8 (Hepaticae). Publishing House of Science on Encyclopodia, Pyongyang" title="Korean Spore Plant 8 (Hepaticae)." year="1991">Kim and Hwang 1991</bibRefCitation>
;
<bibRefCitation author="Yamada, K" journalOrPublisher="The Journal of the Hattori Botanical Laboratory" pageId="0" pageNumber="77" pagination="175 - 242" refId="B22" refString="Yamada, K, Choe, DM, 1997. A checklist of Hepaticae and Anthocerotae in the Korean peninsula. The Journal of the Hattori Botanical Laboratory 81: 175 - 242" title="A checklist of Hepaticae and Anthocerotae in the Korean peninsula." volume="81" year="1997">Yamada and Choe 1997</bibRefCitation>
) and here added to Jeollabuk-do and Jeju-do. The specimen included in the phylogenetic tree in
<bibRefCitation DOI="https://doi.org/10.5252/cryptogamie-bryologie2019v40a7" author="Bakalin, VA" journalOrPublisher="Bryologie" pageId="0" pageNumber="77" pagination="59 - 85" refId="B3" refString="Bakalin, VA, Fedosov, VE, Fedorova, AV, Nguyen, VS, 2019. Integrative taxonomic revision of Marsupella (Gymnomitriaceae, Hepaticae) reveals neglected diversity in Pacific Asia. Cryptogamie. Bryologie 40 (7): 59 - 85, DOI: https://doi.org/10.5252/cryptogamie-bryologie2019v40a7" title="Integrative taxonomic revision of Marsupella (Gymnomitriaceae, Hepaticae) reveals neglected diversity in Pacific Asia. Cryptogamie." url="https://doi.org/10.5252/cryptogamie-bryologie2019v40a7" volume="40" year="2019">Bakalin et al. (2019)</bibRefCitation>
under the name
<taxonomicName class="Hepaticae" family="Gymnomitriaceae" genus="Marsupella" kingdom="Plantae" lsidName="Marsupella alata" order="Jungermanniales" pageId="0" pageNumber="77" phylum="Marchantiophyta" rank="species" species="alata">
<emphasis italics="true" pageId="0" pageNumber="77">Marsupella alata</emphasis>
</taxonomicName>
S.Hatt. et N.Kitag. (Republic of Korea, Seorak Mt., 11.V.2011, Bakalin, Kor-6-28a-11, VBGI) was re-studied and found as the dwarf modification of
<taxonomicName family="Gymnomitriaceae" kingdom="Plantae" lsidName="M. yakushimensis" order="Jungermanniales" pageId="0" pageNumber="77" rank="species" species="yakushimensis">
<emphasis italics="true" pageId="0" pageNumber="77">M. yakushimensis</emphasis>
</taxonomicName>
. Although the distinctive differences between cited specimen and another accession of
<taxonomicName family="Gymnomitriaceae" kingdom="Plantae" lsidName="M. yakushimensis" order="Jungermanniales" pageId="0" pageNumber="77" rank="species" species="yakushimensis">
<emphasis italics="true" pageId="0" pageNumber="77">M. yakushimensis</emphasis>
</taxonomicName>
may suspect more robust than infraspecific differences that should be considered in future studies of the genus in East Asia.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="77" type="materials_examined">
<paragraph pageId="0" pageNumber="77">Specimens examined.</paragraph>
<paragraph pageId="0" pageNumber="77">
<emphasis bold="true" pageId="0" pageNumber="77">Gangwon-do</emphasis>
:
<materialsCitation ID-GBIF-Occurrence="3079225303" collectingDate="2009-10-07" collectingDateMax="2015-05-13" collectingDateMin="2009-10-07" collectorName="S. S. Choi, Mt. Jiri, S. S, V. A. Bakalin" county="Mt. Jiri" elevation="631" latitude="33.308334" location="Mt. Seorak" longLatPrecision="20" longitude="126.50833" municipality="Mt. Jiri" specimenCount="1">
<location LSID="urn:lsid:plazi:treatment:9EC5966716E057308D44CF56ABF9F58A:7B2799BCF334ABEDCDA34698B3A6F23D" county="Mt. Jiri" latitude="33.308334" longLatPrecision="20" longitude="126.50833" municipality="Mt. Jiri" name="Mt. Seorak">Mt. Seorak</location>
,
<geoCoordinate degrees="38" direction="north" minutes="09" orientation="latitude" precision="1" seconds="34.3" value="38.15953">38°09'34.3&quot;N</geoCoordinate>
,
<geoCoordinate degrees="128" direction="east" minutes="28" orientation="longitude" precision="1" seconds="10.5" value="128.46957">128°28'10.5&quot;E</geoCoordinate>
,
<quantity metricMagnitude="2" metricUnit="m" metricValue="6.31" unit="m" value="631.0">
<elevation metricMagnitude="2" metricUnit="m" metricValue="6.31" unit="m" value="631.0">631 m</elevation>
</quantity>
,
<collectingDate value="2010-10-11">11 Oct 2010</collectingDate>
,
<emphasis italics="true" pageId="0" pageNumber="77">
<collectorName>S.S. Choi</collectorName>
8347
</emphasis>
(JNU);
<emphasis bold="true" pageId="0" pageNumber="77">Gyeongsangnam-do</emphasis>
:
<location LSID="urn:lsid:plazi:treatment:9EC5966716E057308D44CF56ABF9F58A:7639B3FADA6DA3F1AA12609CECC1CDB7" county="Mt. Jiri" latitude="33.308334" longLatPrecision="20" longitude="126.50833" municipality="Mt. Jiri" name="Mt. Jiri">Mt. Jiri</location>
,
<geoCoordinate degrees="35" direction="north" minutes="19" orientation="latitude" precision="1" seconds="58.3" value="35.33286">35°19'58.3&quot;N</geoCoordinate>
,
<geoCoordinate degrees="127" direction="east" minutes="44" orientation="longitude" precision="1" seconds="27.5" value="127.74097">127°44'27.5&quot;E</geoCoordinate>
,
<quantity metricMagnitude="3" metricUnit="m" metricValue="1.327" unit="m" value="1327.0">
<elevation metricMagnitude="3" metricUnit="m" metricValue="1.327" unit="m" value="1327.0">1327 m</elevation>
</quantity>
,
<collectingDate value="2011-10-04">4 Oct 2011</collectingDate>
,
<emphasis italics="true" pageId="0" pageNumber="77">
<collectorName>S.S. Choi</collectorName>
111125
</emphasis>
(JNU);
<emphasis bold="true" pageId="0" pageNumber="77">Jeollabuk-do</emphasis>
:
<collectingMunicipality>Mt. Jiri</collectingMunicipality>
,
<geoCoordinate degrees="35" direction="north" minutes="19" orientation="latitude" precision="1" seconds="25.0" value="35.32361">35°19'25.0&quot;N</geoCoordinate>
,
<geoCoordinate degrees="127" direction="east" minutes="41" orientation="longitude" precision="1" seconds="36.8" value="127.69356">127°41'36.8&quot;E</geoCoordinate>
,
<quantity metricMagnitude="3" metricUnit="m" metricValue="1.3" unit="m" value="1300.0">
<elevation metricMagnitude="3" metricUnit="m" metricValue="1.3" unit="m" value="1300.0">1300 m</elevation>
</quantity>
,
<collectingDate value="2009-10-07">7 Oct 2009</collectingDate>
,
<emphasis italics="true" pageId="0" pageNumber="77">
<collectorName>S.S. Choi</collectorName>
6083
</emphasis>
(JNU),
<collectorName>
<collectingCounty>Mt. Jiri</collectingCounty>
,
<emphasis italics="true" pageId="0" pageNumber="77">S.S. Choi 1067</emphasis>
</collectorName>
(JNU);
<emphasis bold="true" pageId="0" pageNumber="77">Jeju-do</emphasis>
: Seogwipo-si,
<geoCoordinate degrees="33" direction="north" minutes="18" orientation="latitude" precision="15" seconds="30" value="33.308334">33°18'30&quot;N</geoCoordinate>
,
<geoCoordinate degrees="126" direction="east" minutes="30" orientation="longitude" precision="15" seconds="30" value="126.50833">126°30'30&quot;E</geoCoordinate>
,
<quantity metricMagnitude="2" metricUnit="m" metricValue="7.0" metricValueMax="8.0" metricValueMin="6.0" unit="m" value="700.0" valueMax="800.0" valueMin="600.0">
<elevation metricMagnitude="2" metricUnit="m" metricValue="7.0" metricValueMax="8.0" metricValueMin="6.0" unit="m" value="700.0" valueMax="800.0" valueMin="600.0">600-800 m</elevation>
</quantity>
alt.
<collectingDate value="2015-05-13">13 May 2015</collectingDate>
,
<emphasis italics="true" pageId="0" pageNumber="77">
<collectorName>V.A. Bakalin</collectorName>
s.n.
</emphasis>
(VBGI)
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="77" type="comments">
<paragraph pageId="0" pageNumber="77">Comments.</paragraph>
<paragraph pageId="0" pageNumber="77">
This large and beautiful species is a rarity within the Korean flora and is known only from a few localities. Unlike Japanese populations, the Korean populations acquire purple to red pigmentation as an exception. The main characteristic of the species includes nearly equal lobes that do not have recurved margins, but commonly undulate and/or turned antically. Another characteristic feature is the absence of a distinctly sheathing leaf base. Dwarf plants of
<taxonomicName family="Gymnomitriaceae" kingdom="Plantae" lsidName="M. yakushimensis" order="Jungermanniales" pageId="0" pageNumber="77" rank="species" species="yakushimensis">
<emphasis italics="true" pageId="0" pageNumber="77">M. yakushimensis</emphasis>
</taxonomicName>
may be mistaken for
<taxonomicName family="Gymnomitriaceae" kingdom="Plantae" lsidName="M. koreana" order="Jungermanniales" pageId="0" pageNumber="77" rank="species" species="koreana">
<emphasis italics="true" pageId="0" pageNumber="77">M. koreana</emphasis>
</taxonomicName>
, and the distinctions are given under the latter. This species is regularly observed with androecia and rarely with archegonia. Androecious and gynoecious plants were intermixed within two specimens; however, we were unable to observe fertilized (in at least two descendant generations) and fully developed perianth. Whether this is the norm or not is not clear.
</paragraph>
</subSubSection>
</treatment>
</document>