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<document id="53718069519C07E505441629C4F32D23" ID-CLB-Dataset="302193" ID-DOI="10.11646/phytotaxa.659.3.1" ID-GBIF-Dataset="52524fe3-dfb8-4afc-829a-31089bb4e306" ID-ISSN="1179-3163" ID-Zenodo-Dep="13217894" IM.bibliography_approvedBy="valdenar" IM.illustrations_approvedBy="felipe" IM.materialsCitations_approvedBy="valdenar" IM.taxonomicNames_approvedBy="valdenar" IM.treatments_approvedBy="valdenar" checkinTime="1722613780751" checkinUser="felipe" docAuthor="Zhang, Liang, Lu, Ngan Thi, Zhou, Xin-Mao, Zhou, Zhuo, Thepkayson, Khamphanh, Luong, Thien Tam &amp; Zhang, Li-Bing" docDate="2024" docId="4B175324C958A518D1BAFCACFE16AC8C" docLanguage="en" docName="phytotaxa.659.3.1.pdf" docOrigin="Phytotaxa 659 (3)" docSource="http://dx.doi.org/10.11646/phytotaxa.659.3.1" docStyle="DocumentStyle:96748F8F1B6C902996E134952A3A36B9.13:Phytotaxa.2014-.journal_article" docStyleId="96748F8F1B6C902996E134952A3A36B9" docStyleName="Phytotaxa.2014-.journal_article" docStyleVersion="13" docTitle="Leptochilus luangprabangensis Liang Zhang, Khamphanh Thepkaysone &amp; Zhuo Zhou, sp. nov." docType="treatment" docVersion="5" lastPageNumber="224" masterDocId="B72E2B5CC953A513D132FFC2FFE5AB4D" masterDocTitle="Exploring the diversity of the Java fern genus Leptochilus (Polypodiaceae) in the Indo-Burma Biodiversity Hotspot" masterLastPageNumber="235" masterPageNumber="213" pageNumber="224" updateTime="1725399130512" updateUser="ExternalLinkService" zenodo-license-figures="UNSPECIFIED" zenodo-license-treatments="UNSPECIFIED">
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<mods:title id="F00B53ED93EB710784152455D2745927">Exploring the diversity of the Java fern genus Leptochilus (Polypodiaceae) in the Indo-Burma Biodiversity Hotspot</mods:title>
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<mods:namePart id="C83AB676EC895A8C8CDA334432508C70">Zhang, Liang</mods:namePart>
<mods:nameIdentifier id="93C314673037104F8CF70259C4B9111D" type="ORCID">0000-0003-3784-3135</mods:nameIdentifier>
<mods:affiliation id="A0C4247F4E0E5E4B978A4A8CAAE789C9">Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, China</mods:affiliation>
<mods:nameIdentifier id="5C14940C21BF4870D3B093FD28CEB34F" type="email">zhangliang@mail.kib.ac.cn</mods:nameIdentifier>
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<mods:namePart id="49D464124BC1FA30E1E86E682DC3929E">Lu, Ngan Thi</mods:namePart>
<mods:nameIdentifier id="68DD034A6E23C814806618B83A3CB394" type="ORCID">0000-0001-9823-2018</mods:nameIdentifier>
<mods:affiliation id="66E8F6B2C653E3336139FAA139FA4A43">Department of Biology, Vietnam National Museum of Nature, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Vietnam; Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Vietnam</mods:affiliation>
<mods:nameIdentifier id="00E2785174916C2A8FCC10BE8543BE67" type="email">vnmngan@gmail.com</mods:nameIdentifier>
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<mods:namePart id="6D46C42BDCF6FBCB69ECE31131257CED">Zhou, Xin-Mao</mods:namePart>
<mods:nameIdentifier id="75776F4759FADF4BFC12668C43052398" type="ORCID">0000-0003-3555-7784</mods:nameIdentifier>
<mods:affiliation id="D9C9961834B97892D9A946ADA1B3374C">School of Ecology and Environmental Science, Yunnan University, Kunming, Yunnan 650091, China</mods:affiliation>
<mods:nameIdentifier id="D39033DD4ED81ED529E7007CA86E8152" type="email">xinmao.zhou@ynu.edu.cn</mods:nameIdentifier>
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<mods:roleTerm id="229B203DB2537F135BF3F567C422749E">Author</mods:roleTerm>
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<mods:namePart id="8C8ADA54CF1DCCE7F04F38DA1D76CFA1">Zhou, Zhuo</mods:namePart>
<mods:nameIdentifier id="4C391B05DCC65D8CD63D66BEAE23606B" type="ORCID">0000-0001-9682-5717</mods:nameIdentifier>
<mods:affiliation id="801CAAF505B30D9B9F99782639F657AE">Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, China</mods:affiliation>
<mods:nameIdentifier id="2EB41D6303EEBCAD95DBCACE8C089696" type="email">zhouzhuo@mail.kib.ac.cn</mods:nameIdentifier>
</mods:name>
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<mods:role id="435EC6FD9800E1C789C5D3B3C7575B12">
<mods:roleTerm id="A5AA0D87C6A0D6997DBBC20DDFD9995F">Author</mods:roleTerm>
</mods:role>
<mods:namePart id="538FF9E07B9ADF06EB9BD62AF2BF0848">Thepkayson, Khamphanh</mods:namePart>
<mods:nameIdentifier id="45D9E651AD7E06DB736D4B0130AF72C6" type="ORCID">0009-0001-1757-9907</mods:nameIdentifier>
<mods:affiliation id="DDBF774756769043E614FBDA10FD3E32">Institute of Traditional Medicine, Vientiane, Lao PDR</mods:affiliation>
<mods:nameIdentifier id="A86FAD274D25378D8B149F7E2BF2A4D3" type="email">khamphanh@hotmail.com</mods:nameIdentifier>
</mods:name>
<mods:name id="2C3A77342C58C0D7E340C9A3A04355B0" type="personal">
<mods:role id="0055415607644E1FF74AB0358CB834A5">
<mods:roleTerm id="CE8497DBD1419F5843BF270C93298D0E">Author</mods:roleTerm>
</mods:role>
<mods:namePart id="C42385964CAD29695DF2222D0E53488D">Luong, Thien Tam</mods:namePart>
<mods:nameIdentifier id="6656C1E613EDE4517FCE53BDA01EA2BC" type="ORCID">0000-0001-8354-6321</mods:nameIdentifier>
<mods:affiliation id="B35B1D92C70CCBC0429F2824026761C5">Department of Ecology - Evolutionary Biology, Vietnam National University Ho Chi Minh City (VNUHCM) - University of Science, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam</mods:affiliation>
<mods:nameIdentifier id="F949DE85B78A50ECF3427817905CD340" type="email">lttam1511@gmail.com</mods:nameIdentifier>
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<mods:namePart id="6CA4C04081D798621DA51DBDFBEF7F45">Zhang, Li-Bing</mods:namePart>
<mods:nameIdentifier id="4B296C83B17A2871E6EC050C34953070" type="ORCID">0000-0002-4905-040X</mods:nameIdentifier>
<mods:affiliation id="FF5D3EBDC68107EE56554F8B1B8E286D">Missouri Botanical Garden, 4344 Shaw Blvd, St. Louis, Missouri, 63110 U. S. A.; Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, Sichuan, China</mods:affiliation>
<mods:nameIdentifier id="46FAB38D942F99461EB7A68802C0741B" type="email">Libing.Zhang@mobot.org</mods:nameIdentifier>
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<mods:typeOfResource id="C5A29B8B5663FD7E9E1888B0118ECA03">text</mods:typeOfResource>
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<mods:titleInfo id="89840BBC09477596595AF75C4A920603">
<mods:title id="53B16FC00311ACC63CEAD84B7A80348E">Phytotaxa</mods:title>
</mods:titleInfo>
<mods:part id="7C4B17CB7E6C3C53549B26838DA12B56">
<mods:date id="29E942267D7C59AEE85DCE4F9961CF6C">2024</mods:date>
<mods:detail id="84983A807D1ADFC458A4B7FCC3B1B630" type="pubDate">
<mods:number id="06B0B34BD5A7042EE73BD3D92F782E4F">2024-07-11</mods:number>
</mods:detail>
<mods:detail id="9927399EEC85222C719D21B006C4DB99" type="volume">
<mods:number id="8DF570F8E187395B95709CD47140383D">659</mods:number>
</mods:detail>
<mods:detail id="993F5576BBE7D1476A075AE1E17C5532" type="issue">
<mods:number id="80543C643A942E4DB407F8BE0825E2DC">3</mods:number>
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<mods:start id="AFD16E56212E7825AFDAC06DFBC35DE0">213</mods:start>
<mods:end id="ADBF6E2F6A4D1BE37019E7B814BF3276">235</mods:end>
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<mods:url id="1A0EBFBD50D246A5C7D32D308D56310D">http://dx.doi.org/10.11646/phytotaxa.659.3.1</mods:url>
</mods:location>
<mods:classification id="03D01803B7DF46AF7B7B90CC981F28B3">journal article</mods:classification>
<mods:identifier id="D2026639186E3DBE845560E0C078E29E" type="CLB-Dataset">302193</mods:identifier>
<mods:identifier id="062951235E9A1099CBB4FBD9227710FA" type="DOI">10.11646/phytotaxa.659.3.1</mods:identifier>
<mods:identifier id="812B9C9A21BE90293AC6489FFDFA4D48" type="GBIF-Dataset">52524fe3-dfb8-4afc-829a-31089bb4e306</mods:identifier>
<mods:identifier id="94CD442CD7534919551AF3F75955B75E" type="ISSN">1179-3163</mods:identifier>
<mods:identifier id="5493ACF7F3C0C3C81A3C44E2F6C31E91" type="Zenodo-Dep">13217894</mods:identifier>
</mods:mods>
<treatment id="4B175324C958A518D1BAFCACFE16AC8C" ID-DOI="http://doi.org/10.5281/zenodo.13652246" ID-GBIF-Taxon="240245553" ID-Zenodo-Dep="13652246" LSID="urn:lsid:plazi:treatment:4B175324C958A518D1BAFCACFE16AC8C" httpUri="http://treatment.plazi.org/id/4B175324C958A518D1BAFCACFE16AC8C" lastPageNumber="224" pageId="11" pageNumber="224">
<subSubSection id="8BA4B1B9C958A518D1BAFCACFADBA8C5" box="[136,1342,878,905]" pageId="11" pageNumber="224" type="nomenclature">
<paragraph id="C301E232C958A518D1BAFCACFADBA8C5" blockId="11.[136,1342,878,905]" box="[136,1342,878,905]" pageId="11" pageNumber="224">
<heading id="9849555EC958A518D1BAFCACFADBA8C5" box="[136,1342,878,905]" fontSize="11" level="2" pageId="11" pageNumber="224" reason="4">
6.
<taxonomicName id="04BE99B1C958A518D196FCACFB98A8C5" authority="Liang Zhang, Khamphanh Thepkaysone &amp; Zhuo Zhou" authorityName="Liang Zhang, Khamphanh Thepkaysone &amp; Zhuo Zhou" box="[164,1149,878,905]" class="Polypodiopsida" family="Polypodiaceae" genus="Leptochilus" kingdom="Plantae" order="Polypodiales" pageId="11" pageNumber="224" phylum="Tracheophyta" rank="species" species="luangprabangensis" status="sp. nov.">
<emphasis id="F1CA3E20C958A518D196FCACFDEAA8C4" bold="true" box="[164,527,878,905]" italics="true" pageId="11" pageNumber="224">Leptochilus luangprabangensis</emphasis>
Liang Zhang, Khamphanh Thepkaysone &amp; Zhuo Zhou
</taxonomicName>
,
<emphasis id="F1CA3E20C958A518D5BAFCADFB38A8C5" box="[1160,1245,879,904]" italics="true" pageId="11" pageNumber="224">
<taxonomicNameLabel id="EAF9835BC958A518D5BAFCADFB38A8C5" box="[1160,1245,879,904]" pageId="11" pageNumber="224" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
(
<figureCitation id="5B85FEB7C958A518D5D9FCACFAD5A8C5" box="[1259,1328,878,904]" captionStart="FIGURE 8" captionStartId="12.[136,229,1572,1594]" captionTargetBox="[163,1424,202,1535]" captionTargetId="figure-25@12.[151,1436,190,1548]" captionTargetPageId="12" captionText="FIGURE 8. Leptochilus luangprabangensis Liang Zhang &amp; Zhuo Zhou,—A. Habitat.—B &amp; C. Habit.—D. Abaxial view of portion of fertile lamina.—E. Abaxial view of fertile frond and sterile frond.—F. Rhizome. Photo credit: Liang Zhang." figureDoi="http://doi.org/10.5281/zenodo.13217910" httpUri="https://zenodo.org/record/13217910/files/figure.png" pageId="11" pageNumber="224">Fig. 8</figureCitation>
).
</heading>
</paragraph>
</subSubSection>
<subSubSection id="8BA4B1B9C958A518D1BAFC74FA6DA8B9" pageId="11" pageNumber="224" type="materials_examined">
<paragraph id="C301E232C958A518D1BAFC74FA6DA8B9" blockId="11.[136,1452,950,1985]" pageId="11" pageNumber="224">
<emphasis id="F1CA3E20C958A518D1BAFC74FF26A89D" bold="true" box="[136,195,950,976]" pageId="11" pageNumber="224">Type</emphasis>
:
<materialsCitation id="73D6E86FC958A518D1E7FC74FC70A8B9" ID-GBIF-Occurrence="4928466307" collectingDate="2019-05-13" collectionCode="KUN" collectorName="Zhuo Zhou &amp; Liang Zhang LZ" country="Laos" elevation="586" latitude="19.83" location="City" longLatPrecision="762" longitude="102.15" pageId="11" pageNumber="224" specimenCount="2" stateProvince="Louangphabang" typeStatus="holotype">
<collectingCountry id="BBA9A2A2C958A518D1E7FC74FEC7A89D" box="[213,290,950,976]" name="Laos" pageId="11" pageNumber="224">LAOS</collectingCountry>
.
<collectingRegion id="017A2CD0C958A518D01DFC75FE05A89D" box="[303,480,950,977]" country="Laos" name="Louangphabang" pageId="11" pageNumber="224">Luang Prabang</collectingRegion>
: near Luang Prabang
<location id="C661B4E9C958A518D3D2FC74FCF4A89D" LSID="urn:lsid:plazi:treatment:4B175324C958A518D1BAFCACFE16AC8C:C661B4E9C958A518D3D2FC74FCF4A89D" box="[736,785,950,976]" country="Laos" latitude="19.83" longLatPrecision="762" longitude="102.15" name="City" pageId="11" pageNumber="224" stateProvince="Louangphabang">City</location>
, elev.
<quantity id="04464FD7C958A518D26FFC74FC4CA89C" box="[861,937,950,977]" metricMagnitude="2" metricUnit="m" metricValue="5.86" pageId="11" pageNumber="224" unit="m" value="586.0">
<elevation id="48930501C958A518D26FFC74FC4CA89C" box="[861,937,950,977]" metricMagnitude="2" metricUnit="m" metricValue="5.86" pageId="11" pageNumber="224" unit="m" value="586.0">586 m</elevation>
</quantity>
,
<geoCoordinate id="A68A84F5C958A518D28AFC74FBF3A89C" box="[952,1046,950,977]" degrees="19.83" direction="north" orientation="latitude" pageId="11" pageNumber="224" precision="555" value="19.83">19.83°N</geoCoordinate>
/
<geoCoordinate id="A68A84F5C958A518D52DFC74FB6DA89C" box="[1055,1160,950,977]" degrees="102.15" direction="east" orientation="longitude" pageId="11" pageNumber="224" precision="555" value="102.15">102.15°E</geoCoordinate>
, on a small tree trunk in limestone mountain,
<date id="B700C4F2C958A518D046FC18FDE9A8B9" box="[372,524,986,1013]" pageId="11" pageNumber="224" value="2019-05-13">
<collectingDate id="A7443D1AC958A518D046FC18FDE9A8B9" box="[372,524,986,1013]" pageId="11" pageNumber="224" value="2019-05-13">13 May 2019</collectingDate>
</date>
,
<emphasis id="F1CA3E20C958A518D325FC18FC70A8B9" box="[535,917,986,1013]" italics="true" pageId="11" pageNumber="224">
<collectorName id="6E4B87E4C958A518D325FC18FD77A8B9" box="[535,658,986,1012]" pageId="11" pageNumber="224">Zhuo Zhou</collectorName>
&amp;
<collectorName id="6E4B87E4C958A518D387FC19FC89A8B9" box="[693,876,986,1012]" pageId="11" pageNumber="224">Liang Zhang LZ</collectorName>
415
</emphasis>
</materialsCitation>
<materialsCitation id="73D6E86FC958A518D2AEFC18FB22A8B8" ID-GBIF-Occurrence="4928466301" box="[924,1223,986,1013]" collectingDate="2019-05-13" collectionCode="KUN" collectorName="Zhuo Zhou &amp; Liang Zhang LZ" country="Laos" elevation="586" latitude="19.83" location="City" longLatPrecision="762" longitude="102.15" pageId="11" pageNumber="224" specimenCount="2" stateProvince="Louangphabang" typeStatus="holotype">
(
<typeStatus id="1C055C90C958A518D296FC18FBEDA8B9" box="[932,1032,986,1012]" pageId="11" pageNumber="224" type="holotype">holotype</typeStatus>
KUN-1576324!;
</materialsCitation>
<materialsCitation id="73D6E86FC958A518D5FCFC18FA66A8B9" ID-GBIF-Occurrence="4928466316" box="[1230,1411,986,1012]" collectingDate="2019-05-13" collectionCode="KUN" collectorName="Zhuo Zhou &amp; Liang Zhang LZ" country="Laos" elevation="586" latitude="19.83" location="City" longLatPrecision="762" longitude="102.15" pageId="11" pageNumber="224" specimenCount="2" stateProvince="Louangphabang" typeStatus="holotype">
<typeStatus id="1C055C90C958A518D5FCFC18FACFA8B9" box="[1230,1322,986,1012]" pageId="11" pageNumber="224" type="isotype">isotypes</typeStatus>
<collectionCode id="A5AF7AF7C958A518D403FC18FA9DA8B9" box="[1329,1400,986,1012]" country="China" lsid="urn:lsid:biocol.org:col:15842" name="Kunming Institute of Botany, Chinese Academy of Sciences" pageId="11" pageNumber="224" type="Herbarium">KUN</collectionCode>
!)
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection id="8BA4B1B9C958A518D18FFC3CFD1EAEA1" pageId="11" pageNumber="224" type="diagnosis">
<paragraph id="C301E232C958A518D18FFC3CFBEDAF71" blockId="11.[136,1452,950,1985]" pageId="11" pageNumber="224">
<emphasis id="F1CA3E20C958A518D18FFC3CFED5AF55" bold="true" box="[189,304,1022,1048]" pageId="11" pageNumber="224">Diagnosis</emphasis>
:
<taxonomicName id="04BE99B1C958A518D072FC3CFD44AF55" box="[320,673,1022,1048]" class="Polypodiopsida" family="Polypodiaceae" genus="Leptochilus" kingdom="Plantae" order="Polypodiales" pageId="11" pageNumber="224" phylum="Tracheophyta" rank="species" species="luangprabangensis">
<emphasis id="F1CA3E20C958A518D072FC3CFD44AF55" box="[320,673,1022,1048]" italics="true" pageId="11" pageNumber="224">Leptochilus luangprabangensis</emphasis>
</taxonomicName>
is characterized by its climbing habit, the length of fertile and sterile fronds nearly identical, thin lamina texture, and sterile fronds shortly petiolated.
</paragraph>
<paragraph id="C301E232C958A518D18FFB84FD1EAEA1" blockId="11.[136,1452,950,1985]" pageId="11" pageNumber="224">
<emphasis id="F1CA3E20C958A518D18FFB84FEEDAF2D" bold="true" box="[189,264,1094,1120]" pageId="11" pageNumber="224">Plants</emphasis>
perennial, evergreen, epiphytic.
<emphasis id="F1CA3E20C958A518D341FB84FD38AF2D" bold="true" box="[627,733,1094,1120]" pageId="11" pageNumber="224">Rhizome</emphasis>
long creeping, ca. 2.5–3.0 mm in diam., dorsiventrally flattened, scaled, with a few short phyllopodia and roots. Apex of rhizome and basal petiole densely scaly, scales subulatelanceolate, 1.4–2.4 ×
<quantity id="04464FD7C958A518D04BFB4CFDE7AFE4" box="[377,514,1166,1193]" metricMagnitude="-4" metricUnit="m" metricValue="5.0" metricValueMax="7.0" metricValueMin="3.0" pageId="11" pageNumber="224" unit="mm" value="0.5" valueMax="0.7" valueMin="0.3">0.3–0.7 mm</quantity>
, brown, basifixed, concolorous, clathrate, margin entire or sparely denticulate, apex acuminate.
<emphasis id="F1CA3E20C958A518D039FB70FE85AF81" bold="true" box="[267,352,1202,1228]" pageId="11" pageNumber="224">Fronds</emphasis>
dimorphic, sterile fronds larger than fertile fronds.
<emphasis id="F1CA3E20C958A518D283FB70FBB1AF81" bold="true" box="[945,1108,1202,1228]" pageId="11" pageNumber="224">Sterile fronds</emphasis>
<quantity id="04464FD7C958A518D56CFB70FB2AAF80" box="[1118,1231,1202,1229]" metricMagnitude="-1" metricUnit="m" metricValue="1.5" metricValueMax="1.8" metricValueMin="1.2" pageId="11" pageNumber="224" unit="cm" value="15.0" valueMax="18.0" valueMin="12.0">12–18 cm</quantity>
tall, laminae much longer than petioles;
<emphasis id="F1CA3E20C958A518D04BFB14FE3DAFBD" bold="true" box="[377,472,1238,1264]" pageId="11" pageNumber="224">laminae</emphasis>
ribbon-lanceolate, base cuneate, apex acuminate,
<quantity id="04464FD7C958A518D527FB14FB63AFBC" box="[1045,1158,1238,1265]" metricMagnitude="-1" metricUnit="m" metricValue="1.3" metricValueMax="1.6" metricValueMin="1.0" pageId="11" pageNumber="224" unit="cm" value="13.0" valueMax="16.0" valueMin="10.0">10–16 cm</quantity>
long, 2.0–
<quantity id="04464FD7C958A518D431FB14FAAAAFBC" box="[1283,1359,1238,1265]" metricMagnitude="-2" metricUnit="m" metricValue="3.1" pageId="11" pageNumber="224" unit="cm" value="3.1">3.1 cm</quantity>
wide at middle, chartaceous, glabrous;
<emphasis id="F1CA3E20C958A518D0D9FB38FDA0AE59" bold="true" box="[491,581,1274,1300]" pageId="11" pageNumber="224">petioles</emphasis>
stramineous, grooved adaxially, glabrous,
<quantity id="04464FD7C958A518D51CFB38FB52AE58" box="[1070,1207,1274,1301]" metricMagnitude="-4" metricUnit="m" metricValue="7.0" metricValueMax="8.0" metricValueMin="6.0" pageId="11" pageNumber="224" unit="mm" value="0.7" valueMax="0.8" valueMin="0.6">0.6–0.8 mm</quantity>
in diam.,
<quantity id="04464FD7C958A518D41EFB38FA4EAE58" box="[1324,1451,1274,1301]" metricMagnitude="-2" metricUnit="m" metricValue="1.15" metricValueMax="1.7" metricValueMin="0.6" pageId="11" pageNumber="224" unit="cm" value="1.15" valueMax="1.7" valueMin="0.6">0.6–1.7 cm</quantity>
long.
<emphasis id="F1CA3E20C958A518D1F8FADCFE95AE75" bold="true" box="[202,368,1310,1336]" pageId="11" pageNumber="224">Fertile fronds</emphasis>
<quantity id="04464FD7C958A518D048FADCFE0EAE74" box="[378,491,1310,1337]" metricMagnitude="-1" metricUnit="m" metricValue="1.55" metricValueMax="1.7" metricValueMin="1.4" pageId="11" pageNumber="224" unit="cm" value="15.5" valueMax="17.0" valueMin="14.0">14–17 cm</quantity>
tall, petioles shorter than laminae;
<emphasis id="F1CA3E20C958A518D2B7FADCFC01AE75" bold="true" box="[901,996,1310,1336]" pageId="11" pageNumber="224">laminae</emphasis>
elliptic-lanceolate, margins entire, base cuneate, apex long acuminate,
<quantity id="04464FD7C958A518D0C2FA80FD87AE10" box="[496,610,1346,1373]" metricMagnitude="-1" metricUnit="m" metricValue="1.2" metricValueMax="1.3" metricValueMin="1.1" pageId="11" pageNumber="224" unit="cm" value="12.0" valueMax="13.0" valueMin="11.0">11–13 cm</quantity>
long,
<quantity id="04464FD7C958A518D383FA80FCD4AE10" box="[689,817,1346,1373]" metricMagnitude="-2" metricUnit="m" metricValue="1.4" metricValueMax="1.5" metricValueMin="1.3" pageId="11" pageNumber="224" unit="cm" value="1.4" valueMax="1.5" valueMin="1.3">1.3–1.5 cm</quantity>
wide at middle, thinly chartaceous, glabrous;
<emphasis id="F1CA3E20C958A518D463FA80FA4EAE11" bold="true" box="[1361,1451,1346,1372]" pageId="11" pageNumber="224">petioles</emphasis>
stramineous, grooved adaxially, glabrous,
<quantity id="04464FD7C958A518D369FAA4FD04AECC" box="[603,737,1382,1409]" metricMagnitude="-4" metricUnit="m" metricValue="6.0" metricValueMax="7.0" metricValueMin="5.0" pageId="11" pageNumber="224" unit="mm" value="0.6" valueMax="0.7" valueMin="0.5">0.5–0.7 mm</quantity>
in diam.,
<quantity id="04464FD7C958A518D27EFAA4FC7BAECC" box="[844,926,1382,1409]" metricMagnitude="-2" metricUnit="m" metricValue="3.5" metricValueMax="4.0" metricValueMin="3.0" pageId="11" pageNumber="224" unit="cm" value="3.5" valueMax="4.0" valueMin="3.0">3–4 cm</quantity>
long.
<emphasis id="F1CA3E20C958A518D2D0FAA4FBC7AECD" bold="true" box="[994,1058,1382,1408]" pageId="11" pageNumber="224">Veins</emphasis>
anastomosing, lateral veins visible, veinlets invisible.
<emphasis id="F1CA3E20C958A518D060FA48FE61AEE9" bold="true" box="[338,388,1418,1444]" pageId="11" pageNumber="224">Sori</emphasis>
linear, reach lamina margins, ca.
<quantity id="04464FD7C958A518D3C5FA48FCA9AEE8" box="[759,844,1418,1445]" metricMagnitude="-4" metricUnit="m" metricValue="5.0" pageId="11" pageNumber="224" unit="mm" value="0.5">0.5 mm</quantity>
from margins and
<quantity id="04464FD7C958A518D52EFA48FB94AEE8" box="[1052,1137,1418,1445]" metricMagnitude="-4" metricUnit="m" metricValue="4.0" pageId="11" pageNumber="224" unit="mm" value="0.4">0.4 mm</quantity>
from midrib, 25–28 on each side of midrib,
<quantity id="04464FD7C958A518D004FA6CFE51AE84" box="[310,436,1454,1481]" metricMagnitude="-3" metricUnit="m" metricValue="8.0" metricValueMax="9.0" metricValueMin="7.0" pageId="11" pageNumber="224" unit="cm" value="0.8" valueMax="0.9" valueMin="0.7">0.7–0.9 cm</quantity>
long,
<quantity id="04464FD7C958A518D0CEFA6CFD61AE84" box="[508,644,1454,1481]" metricMagnitude="-4" metricUnit="m" metricValue="5.0" metricValueMax="6.0" metricValueMin="4.0" pageId="11" pageNumber="224" unit="mm" value="0.5" valueMax="0.6" valueMin="0.4">0.4–0.6 mm</quantity>
wide when mature, at angles of 36–45 degree with midribs, centers ca. (1–)
<quantity id="04464FD7C958A518D181FA10FEF1AEA0" box="[179,276,1490,1517]" metricMagnitude="-3" metricUnit="m" metricValue="3.5" metricValueMax="4.0" metricValueMin="3.0" pageId="11" pageNumber="224" unit="mm" value="3.5" valueMax="4.0" valueMin="3.0">3–4 mm</quantity>
apart from one another. Paraphyses absent.
</paragraph>
</subSubSection>
<subSubSection id="8BA4B1B9C958A518D18FFA34FA98AD15" pageId="11" pageNumber="224" type="distribution">
<paragraph id="C301E232C958A518D18FFA34FA98AD15" blockId="11.[136,1452,950,1985]" pageId="11" pageNumber="224">
<emphasis id="F1CA3E20C958A518D18FFA34FE00AD5D" bold="true" box="[189,485,1526,1552]" pageId="11" pageNumber="224">Distribution and habitat:</emphasis>
<taxonomicName id="04BE99B1C958A518D0D8FA34FCADAD5D" box="[490,840,1526,1552]" class="Polypodiopsida" family="Polypodiaceae" genus="Leptochilus" kingdom="Plantae" order="Polypodiales" pageId="11" pageNumber="224" phylum="Tracheophyta" rank="species" species="luangprabangensis">
<emphasis id="F1CA3E20C958A518D0D8FA34FCADAD5D" box="[490,840,1526,1552]" italics="true" pageId="11" pageNumber="224">Leptochilus luangprabangensis</emphasis>
</taxonomicName>
is known from a single collection made in the limestone forest near the capital city of
<collectingRegion id="017A2CD0C958A518D0FCF9D9FD00AD79" box="[462,741,1562,1589]" country="Laos" name="Louangphabang" pageId="11" pageNumber="224">Luang Prabang Province</collectingRegion>
,
<collectingCountry id="BBA9A2A2C958A518D3C2F9D9FCCFAD78" box="[752,810,1563,1589]" name="Laos" pageId="11" pageNumber="224">Laos</collectingCountry>
. The species was observed growing as a hemiepiphyte on a small tree trunk. It was anchored to the tree with rhizomes and roots, and the roots extended into the soil below.
</paragraph>
</subSubSection>
<subSubSection id="8BA4B1B9C958A518D18FF9A0FE16AC8C" pageId="11" pageNumber="224" type="etymology">
<paragraph id="C301E232C958A518D18FF9A0FB1FAD31" blockId="11.[136,1452,950,1985]" box="[189,1274,1634,1661]" pageId="11" pageNumber="224">
<emphasis id="F1CA3E20C958A518D18FF9A0FEDBAD31" bold="true" box="[189,318,1634,1660]" pageId="11" pageNumber="224">Etymology</emphasis>
: The species is named after
<collectingRegion id="017A2CD0C958A518D34FF9A1FC71AD31" box="[637,916,1634,1661]" country="Laos" name="Louangphabang" pageId="11" pageNumber="224">Luang Prabang Province</collectingRegion>
,
<collectingCountry id="BBA9A2A2C958A518D292F9A1FC3CAD30" box="[928,985,1635,1661]" name="Laos" pageId="11" pageNumber="224">Laos</collectingCountry>
, where it was discovered.
</paragraph>
<paragraph id="C301E232C958A518D18FF944FE16AC8C" blockId="11.[136,1452,950,1985]" pageId="11" pageNumber="224">
<emphasis id="F1CA3E20C958A518D18FF944FF10ADED" bold="true" box="[189,245,1670,1696]" pageId="11" pageNumber="224">Note</emphasis>
: Morphologically,
<taxonomicName id="04BE99B1C958A518D0FBF944FCCDADED" box="[457,808,1670,1696]" class="Polypodiopsida" family="Polypodiaceae" genus="Leptochilus" kingdom="Plantae" order="Polypodiales" pageId="11" pageNumber="224" phylum="Tracheophyta" rank="species" species="luangprabangensis">
<emphasis id="F1CA3E20C958A518D0FBF944FCCDADED" box="[457,808,1670,1696]" italics="true" pageId="11" pageNumber="224">Leptochilus luangprabangensis</emphasis>
</taxonomicName>
is most similar to
<taxonomicName id="04BE99B1C958A518D2DCF945FEE8AD89" authority="Liang Zhang &amp; Li Bing Zhang (2018: 173)" authorityName="Liang Zhang &amp; Li Bing Zhang" authorityPageNumber="173" authorityYear="2018" class="Polypodiopsida" family="Polypodiaceae" genus="Leptochilus" kingdom="Plantae" order="Polypodiales" pageId="11" pageNumber="224" phylum="Tracheophyta" rank="species" species="chingii">
<emphasis id="F1CA3E20C958A518D2DCF945FBB2ADED" box="[1006,1111,1670,1696]" italics="true" pageId="11" pageNumber="224">L. chingii</emphasis>
Liang Zhang &amp; Li Bing
<bibRefCitation id="A72F9FC3C958A518D456F944FEE8AD89" author="Zhang, L. &amp; Guo, L. &amp; Zhang, L. - B." pageId="11" pageNumber="224" pagination="172 - 176" refId="ref12331" refString="Zhang, L., Guo, L. &amp; Zhang, L. - B. (2018) New combinations in the fern genus Leptochilus (Polypodiaceae). Phytotaxa 374: 172 - 176. https: // doi. org / 10.11646 / phytotaxa. 374.2.10" type="journal article" year="2018">Zhang (2018: 173)</bibRefCitation>
</taxonomicName>
due to their simple and slightly dimorphic fronds, lanceolate laminae, and laminae gradually narrowed towards base. However, they differ in the lamina texture (thinly chartaceous vs. chartaceous or thickly chartaceous in
<taxonomicName id="04BE99B1C958A518D1BAF931FF11AC41" authorityName="Liang Zhang &amp; Li Bing Zhang" authorityYear="2018" box="[136,244,1778,1804]" class="Polypodiopsida" family="Polypodiaceae" genus="Leptochilus" kingdom="Plantae" order="Polypodiales" pageId="11" pageNumber="224" phylum="Tracheophyta" rank="species" species="chingii">
<emphasis id="F1CA3E20C958A518D1BAF931FF11AC41" box="[136,244,1778,1804]" italics="true" pageId="11" pageNumber="224">L. chingii</emphasis>
</taxonomicName>
and petiole length of sterile fronds (
<quantity id="04464FD7C958A518D3A3F930FCF5AC40" box="[657,784,1778,1805]" metricMagnitude="-2" metricUnit="m" metricValue="1.15" metricValueMax="1.7" metricValueMin="0.6" pageId="11" pageNumber="224" unit="cm" value="1.15" valueMax="1.7" valueMin="0.6">0.6–1.7 cm</quantity>
vs. (0.5–)
<quantity id="04464FD7C958A518D2B6F930FC38AC41" box="[900,989,1778,1805]" metricMagnitude="-2" metricUnit="m" metricValue="3.5" metricValueMax="5.0" metricValueMin="2.0" pageId="11" pageNumber="224" unit="cm" value="3.5" valueMax="5.0" valueMin="2.0">2–5 cm</quantity>
). Additionally,
<taxonomicName id="04BE99B1C958A518D5BBF931FA9BAC41" box="[1161,1406,1778,1804]" class="Polypodiopsida" family="Polypodiaceae" genus="Leptochilus" kingdom="Plantae" order="Polypodiales" pageId="11" pageNumber="224" phylum="Tracheophyta" rank="species" species="luangprabangensis">
<emphasis id="F1CA3E20C958A518D5BBF931FA9BAC41" box="[1161,1406,1778,1804]" italics="true" pageId="11" pageNumber="224">L. luangprabangensis</emphasis>
</taxonomicName>
has only been observed growing as a hemiepiphyte on tree trunks, while
<taxonomicName id="04BE99B1C958A518D297F8D5FBF7AC7D" authorityName="Liang Zhang &amp; Li Bing Zhang" authorityYear="2018" box="[933,1042,1814,1840]" class="Polypodiopsida" family="Polypodiaceae" genus="Leptochilus" kingdom="Plantae" order="Polypodiales" pageId="11" pageNumber="224" phylum="Tracheophyta" rank="species" species="chingii">
<emphasis id="F1CA3E20C958A518D297F8D5FBF7AC7D" box="[933,1042,1814,1840]" italics="true" pageId="11" pageNumber="224">L. chingii</emphasis>
</taxonomicName>
was found on moist rocks. Though
<taxonomicName id="04BE99B1C958A518D1BAF8F9FE9BAC19" box="[136,382,1850,1876]" class="Polypodiopsida" family="Polypodiaceae" genus="Leptochilus" kingdom="Plantae" order="Polypodiales" pageId="11" pageNumber="224" phylum="Tracheophyta" rank="species" species="luangprabangensis">
<emphasis id="F1CA3E20C958A518D1BAF8F9FE9BAC19" box="[136,382,1850,1876]" italics="true" pageId="11" pageNumber="224">L. luangprabangensis</emphasis>
</taxonomicName>
is phylogenetically the closest to
<taxonomicName id="04BE99B1C958A518D231F8F9FC56AC19" box="[771,947,1851,1876]" class="Polypodiopsida" family="Polypodiaceae" genus="Leptochilus" kingdom="Plantae" order="Polypodiales" pageId="11" pageNumber="224" phylum="Tracheophyta" rank="species" species="vietnamensis">
<emphasis id="F1CA3E20C958A518D231F8F9FC56AC19" box="[771,947,1851,1876]" italics="true" pageId="11" pageNumber="224">L. vietnamensis</emphasis>
</taxonomicName>
, they have 12 bp differences in 3074 bps of aligned three plastid markers (
<bibRefCitation id="A72F9FC3C958A518D0EBF89CFD40AC35" author="Zhang, L. &amp; Liang, Z. - L. &amp; Fan, X. - P. &amp; Lu, N. T. &amp; Zhou, X. - M. &amp; Wei, H. - J. &amp; Zhang, L. - B. The &amp; Biodiversity Hotspot" box="[473,677,1886,1912]" pageId="11" pageNumber="224" refId="ref12381" refString="Zhang, L., Liang, Z. - L., Fan, X. - P., Lu, N. T., Zhou, X. - M., Wei, H. - J. &amp; Zhang, L. - B. The Indo-Burma Biodiversity Hotspot for ferns: updated phylogeny helps discover hidden diversity in the Java fern genus Leptochilus (Polypodiaceae). (2024) Plant Diversity. [in press]" type="book" year="2024">
Zhang
<emphasis id="F1CA3E20C958A518D31BF89DFD84AC35" box="[553,609,1886,1912]" italics="true" pageId="11" pageNumber="224">et al.</emphasis>
2024
</bibRefCitation>
). Morphologically,
<taxonomicName id="04BE99B1C958A518D24CF89DFB96AC35" box="[894,1139,1886,1912]" class="Polypodiopsida" family="Polypodiaceae" genus="Leptochilus" kingdom="Plantae" order="Polypodiales" pageId="11" pageNumber="224" phylum="Tracheophyta" rank="species" species="luangprabangensis">
<emphasis id="F1CA3E20C958A518D24CF89DFB96AC35" box="[894,1139,1886,1912]" italics="true" pageId="11" pageNumber="224">L. luangprabangensis</emphasis>
</taxonomicName>
has fertile fronds nearly the same length as sterile fronds that are
<quantity id="04464FD7C958A518D300F840FD47ACD0" box="[562,674,1922,1949]" metricMagnitude="-1" metricUnit="m" metricValue="1.5" metricValueMax="1.8" metricValueMin="1.2" pageId="11" pageNumber="224" unit="cm" value="15.0" valueMax="18.0" valueMin="12.0">12–18 cm</quantity>
long, while
<taxonomicName id="04BE99B1C958A518D201F841FC06ACD1" box="[819,995,1923,1948]" class="Polypodiopsida" family="Polypodiaceae" genus="Leptochilus" kingdom="Plantae" order="Polypodiales" pageId="11" pageNumber="224" phylum="Tracheophyta" rank="species" species="vietnamensis">
<emphasis id="F1CA3E20C958A518D201F841FC06ACD1" box="[819,995,1923,1948]" italics="true" pageId="11" pageNumber="224">L. vietnamensis</emphasis>
</taxonomicName>
has fertile fronds much shorter than the sterile fronds that are
<quantity id="04464FD7C958A518D04EF864FE0AAC8C" box="[380,495,1958,1985]" metricMagnitude="-1" metricUnit="m" metricValue="3.5" metricValueMax="4.0" metricValueMin="3.0" pageId="11" pageNumber="224" unit="cm" value="35.0" valueMax="40.0" valueMin="30.0">30–40 cm</quantity>
.
</paragraph>
</subSubSection>
</treatment>
</document>
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