210 lines
16 KiB
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210 lines
16 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/phytokeys.148.48510" ID-GBIF-Dataset="9f23382c-f44e-465b-9638-14765d5be994" ID-PMC="PMC7266837" ID-Pensoft-Pub="1314-2003-148-105" ID-Pensoft-UUID="0BD2F62B990C5B46ACDBCDD9A9EA6489" ID-PubMed="32523394" ModsDocID="1314-2003-148-105" checkinTime="1590560142313" checkinUser="pensoft" docAuthor="Jin, Wei-Yin, Liu, Bing, Zhang, Shou-Zhou, Wan, Tao, Hou, Chen & Yang, Yong" docDate="2020" docId="77DD1B451A135730AD08D0752659A11F" docLanguage="en" docName="PhytoKeys 148: 105-117" docOrigin="PhytoKeys 148" docSource="http://dx.doi.org/10.3897/phytokeys.148.48510" docTitle="Gnetum chinense Y. Yang, Bing Liu & S. Z. Zhang 2020, sp. nov." docType="treatment" docVersion="4" id="0BD2F62B990C5B46ACDBCDD9A9EA6489" lastPageNumber="105" masterDocId="0BD2F62B990C5B46ACDBCDD9A9EA6489" masterDocTitle="Gnetum chinense, a new species of Gnetaceae from southwestern China" masterLastPageNumber="117" masterPageNumber="105" pageNumber="105" updateTime="1668139796306" updateUser="ExternalLinkService">
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<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:titleInfo>
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<mods:title>Gnetum chinense, a new species of Gnetaceae from southwestern China</mods:title>
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</mods:titleInfo>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Jin, Wei-Yin</mods:namePart>
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<mods:affiliation>State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, 20 Nanxincun, Xiangshan, Beijing 100093, China & Tonghua Normal University, 950 Yucai Road, Dongchang District, Tonghua City, Jilin Province 134000, China</mods:affiliation>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Liu, Bing</mods:namePart>
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<mods:affiliation>State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, 20 Nanxincun, Xiangshan, Beijing 100093, China</mods:affiliation>
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<mods:nameIdentifier type="orcid">https://orcid.org/0000-0002-6086-253X</mods:nameIdentifier>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Zhang, Shou-Zhou</mods:namePart>
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<mods:affiliation>Shenzhen Fairy Lake Botanical Garden, Shenzhen, China</mods:affiliation>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Wan, Tao</mods:namePart>
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<mods:affiliation>Shenzhen Fairy Lake Botanical Garden, Shenzhen, China</mods:affiliation>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Hou, Chen</mods:namePart>
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<mods:affiliation>Guangdong Provincial Key Laboratory of Silviculture, Protection and Utilization, Guangdong Academy of Forestry, Guangzhou, 510520, China & Guangdong Academy of Forestry, Guangzhou, 510520, China</mods:affiliation>
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<mods:nameIdentifier type="orcid">https://orcid.org/0000-0002-8558-5655</mods:nameIdentifier>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Yang, Yong</mods:namePart>
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<mods:affiliation>State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, 20 Nanxincun, Xiangshan, Beijing 100093, China</mods:affiliation>
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<mods:nameIdentifier type="email">ephedra@ibcas.ac.cn</mods:nameIdentifier>
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</mods:name>
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<mods:typeOfResource>text</mods:typeOfResource>
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<mods:relatedItem type="host">
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<mods:titleInfo>
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<mods:title>PhytoKeys</mods:title>
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</mods:titleInfo>
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<mods:part>
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<mods:date>2020</mods:date>
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<mods:detail type="volume">
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<mods:number>148</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>105</mods:start>
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<mods:end>117</mods:end>
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</mods:extent>
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</mods:part>
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</mods:relatedItem>
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<mods:location>
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<mods:url>http://dx.doi.org/10.3897/phytokeys.148.48510</mods:url>
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</mods:location>
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<mods:classification>journal article</mods:classification>
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<mods:identifier type="DOI">http://dx.doi.org/10.3897/phytokeys.148.48510</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1314-2003-148-105</mods:identifier>
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<mods:identifier type="Pensoft-UUID">0BD2F62B990C5B46ACDBCDD9A9EA6489</mods:identifier>
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</mods:mods>
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<treatment ID-GBIF-Taxon="164360797" LSID="urn:lsid:plazi:treatment:77DD1B451A135730AD08D0752659A11F" httpUri="http://treatment.plazi.org/id/77DD1B451A135730AD08D0752659A11F" lastPageNumber="105" pageId="0" pageNumber="105">
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<subSubSection pageId="0" pageNumber="105" type="nomenclature">
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<paragraph pageId="0" pageNumber="105">
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<taxonomicName LSID="77DD1B45-1A13-5730-AD08-D0752659A11F" authority="Y. Yang, Bing Liu & S. Z. Zhang" authorityName="Y. Yang, Bing Liu & S. Z. Zhang" authorityYear="2020" class="Gnetopsida" family="Gnetaceae" genus="Gnetum" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Gnetum chinense" order="Gnetales" pageId="0" pageNumber="105" phylum="Tracheophyta" rank="species" species="chinense" status="sp. nov.">Gnetum chinense Y. Yang, Bing Liu & S.Z. Zhang</taxonomicName>
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<taxonomicNameLabel pageId="0" pageNumber="105">sp. nov.</taxonomicNameLabel>
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<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Map displaying the distribution of Gnetum chinense sp. nov. (black squares)." figureDoi="10.3897/phytokeys.148.48510.figure3" httpUri="https://binary.pensoft.net/fig/413914" pageId="0" pageNumber="105">Figs 3</figureCitation>
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<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Gnetum chinense sp. nov. A branch bearing male cones B male cones C female cone portion displaying chlamydosperm morphology." figureDoi="10.3897/phytokeys.148.48510.figure4" httpUri="https://binary.pensoft.net/fig/413915" pageId="0" pageNumber="105">, 4</figureCitation>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="105" type="materials_examined">
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<paragraph pageId="0" pageNumber="105">Type.</paragraph>
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<paragraph pageId="0" pageNumber="105">China. Yunnan: Cang-yuan County, on the way from Ban-hong to Ban-lao Prefecture, forest margin, male cones, March 31st, 2015, B. Liu, Y. Yang & T.W. Xiao 2627 (PE, holotype).</paragraph>
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<caption doi="10.3897/phytokeys.148.48510.figure3" httpUri="https://binary.pensoft.net/fig/413914" pageId="0" pageNumber="105" start="Figure 3" startId="F3">
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<paragraph pageId="0" pageNumber="105">
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<emphasis bold="true" pageId="0" pageNumber="105">Figure 3.</emphasis>
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Map displaying the distribution of
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<taxonomicName authorityName="Y. Yang, Bing Liu & S. Z. Zhang" authorityYear="2020" class="Gnetopsida" family="Gnetaceae" genus="Gnetum" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Gnetum chinense" order="Gnetales" pageId="0" pageNumber="105" phylum="Tracheophyta" rank="species" species="chinense">
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<emphasis italics="true" pageId="0" pageNumber="105">Gnetum chinense</emphasis>
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</taxonomicName>
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sp. nov. (black squares).
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</paragraph>
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</caption>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="105" type="diagnosis">
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<paragraph pageId="0" pageNumber="105">Diagnosis.</paragraph>
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<paragraph pageId="0" pageNumber="105">
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This species is similar to
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<taxonomicName lsidName="G. montanum" pageId="0" pageNumber="105" rank="species" species="montanum">
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<emphasis italics="true" pageId="0" pageNumber="105">G. montanum</emphasis>
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</taxonomicName>
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in its oblong elliptic leaves and subsessile chlamydosperm, but differs from the latter by its shorter male cones (1-1.5 cm long in the new species vs. 2-3 cm in
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<taxonomicName lsidName="G. montanum" pageId="0" pageNumber="105" rank="species" species="montanum">
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<emphasis italics="true" pageId="0" pageNumber="105">G. montanum</emphasis>
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</taxonomicName>
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) having fewer involucral collars (7-10 in the new species vs. 13-18 in
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<taxonomicName lsidName="G. montanum" pageId="0" pageNumber="105" rank="species" species="montanum">
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<emphasis italics="true" pageId="0" pageNumber="105">G. montanum</emphasis>
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</taxonomicName>
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), nearly sessile or extremely shortly stiped chlamydosperms (vs. markedly stiped, stipes 3-5 mm long in
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<taxonomicName lsidName="G. montanum" pageId="0" pageNumber="105" rank="species" species="montanum">
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<emphasis italics="true" pageId="0" pageNumber="105">G. montanum</emphasis>
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</taxonomicName>
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).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="105" type="description">
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<paragraph pageId="0" pageNumber="105">Description.</paragraph>
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<paragraph pageId="0" pageNumber="105">
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Lianas; twigs terete, dichasially branched having swollen nodes. Leaves opposite (Fig.
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<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Gnetum chinense sp. nov. A branch bearing male cones B male cones C female cone portion displaying chlamydosperm morphology." figureDoi="10.3897/phytokeys.148.48510.figure4" httpUri="https://binary.pensoft.net/fig/413915" pageId="0" pageNumber="105">4a</figureCitation>
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), oblong to elliptic, 11-16 cm long, 4-8 cm wide, base rotund to acute, apex acute to acuminate, pinnately veined, midvein impressed adaxially and elevated abaxially, lateral veins 6-8 (Fig.
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<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Gnetum chinense sp. nov. A branch bearing male cones B male cones C female cone portion displaying chlamydosperm morphology." figureDoi="10.3897/phytokeys.148.48510.figure4" httpUri="https://binary.pensoft.net/fig/413915" pageId="0" pageNumber="105">4a</figureCitation>
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), more or less elevated on both sides, petioles 1-1.2 cm long, grooved adaxially. Male reproductive shoots terminal, dichasial, branched once or twice (Fig.
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<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Gnetum chinense sp. nov. A branch bearing male cones B male cones C female cone portion displaying chlamydosperm morphology." figureDoi="10.3897/phytokeys.148.48510.figure4" httpUri="https://binary.pensoft.net/fig/413915" pageId="0" pageNumber="105">4a</figureCitation>
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). Male cones pedunculate, peduncles 2-10 mm long; cylindric, ca. 10-15 mm long, 4 mm in diam., involucral collars 8-10 (Fig.
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<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Gnetum chinense sp. nov. A branch bearing male cones B male cones C female cone portion displaying chlamydosperm morphology." figureDoi="10.3897/phytokeys.148.48510.figure4" httpUri="https://binary.pensoft.net/fig/413915" pageId="0" pageNumber="105">4b</figureCitation>
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). Chlamydosperms ellipsoid to subglobose, ca. 2.2 cm long, 1.4 cm in diam., apex obtuse, base contracted into an extremely short stalk or subsessile, green when young, and orange when mature (Fig.
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<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Gnetum chinense sp. nov. A branch bearing male cones B male cones C female cone portion displaying chlamydosperm morphology." figureDoi="10.3897/phytokeys.148.48510.figure4" httpUri="https://binary.pensoft.net/fig/413915" pageId="0" pageNumber="105">4c</figureCitation>
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).
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</paragraph>
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<caption doi="10.3897/phytokeys.148.48510.figure4" httpUri="https://binary.pensoft.net/fig/413915" pageId="0" pageNumber="105" start="Figure 4" startId="F4">
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<paragraph pageId="0" pageNumber="105">
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<emphasis bold="true" pageId="0" pageNumber="105">Figure 4.</emphasis>
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<taxonomicName authorityName="Y. Yang, Bing Liu & S. Z. Zhang" authorityYear="2020" class="Gnetopsida" family="Gnetaceae" genus="Gnetum" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Gnetum chinense" order="Gnetales" pageId="0" pageNumber="105" phylum="Tracheophyta" rank="species" species="chinense">
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<emphasis italics="true" pageId="0" pageNumber="105">Gnetum chinense</emphasis>
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</taxonomicName>
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sp. nov.
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<emphasis bold="true" pageId="0" pageNumber="105">A</emphasis>
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branch bearing male cones
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<emphasis bold="true" pageId="0" pageNumber="105">B</emphasis>
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male cones
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<emphasis bold="true" pageId="0" pageNumber="105">C</emphasis>
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female cone portion displaying chlamydosperm morphology.
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</paragraph>
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</caption>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="105" type="distribution">
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<paragraph pageId="0" pageNumber="105">Distribution.</paragraph>
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<paragraph pageId="0" pageNumber="105">
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In Yunnan and Guizhou provinces of China (Fig.
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<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Map displaying the distribution of Gnetum chinense sp. nov. (black squares)." figureDoi="10.3897/phytokeys.148.48510.figure3" httpUri="https://binary.pensoft.net/fig/413914" pageId="0" pageNumber="105">3</figureCitation>
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).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="105" type="habitat">
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<paragraph pageId="0" pageNumber="105">Habitats.</paragraph>
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<paragraph pageId="0" pageNumber="105">In evergreen tropical and subtropical forests.</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="105" type="etymology">
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<paragraph pageId="0" pageNumber="105">Etymology.</paragraph>
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<paragraph pageId="0" pageNumber="105">
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The specific epithet '
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<taxonomicName authorityName="Y. Yang, Bing Liu & S. Z. Zhang" authorityYear="2020" class="Gnetopsida" family="Gnetaceae" genus="Gnetum" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="chinense" order="Gnetales" pageId="0" pageNumber="105" phylum="Tracheophyta" rank="species" species="chinense">
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<emphasis italics="true" pageId="0" pageNumber="105">chinense</emphasis>
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</taxonomicName>
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' is derived from China.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="105" type="phenology">
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<paragraph pageId="0" pageNumber="105">Phenology.</paragraph>
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<paragraph pageId="0" pageNumber="105">Blooming male cones and mature chlamydosperms were found in late May and early November, respectively.</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="105" type="conservation">
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<paragraph pageId="0" pageNumber="105">Conservation.</paragraph>
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<paragraph pageId="0" pageNumber="105">
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<taxonomicName authorityName="Y. Yang, Bing Liu & S. Z. Zhang" authorityYear="2020" class="Gnetopsida" family="Gnetaceae" genus="Gnetum" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Gnetum chinense" order="Gnetales" pageId="0" pageNumber="105" phylum="Tracheophyta" rank="species" species="chinense">
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<emphasis italics="true" pageId="0" pageNumber="105">Gnetum chinense</emphasis>
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</taxonomicName>
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is common in evergreen forests in Yunnan and Guizhou. We consider this species to be of Least Concern (LC) under the IUCN Red List Categories and Criteria ver. 3.1 second edition (
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<bibRefCitation author="IUCN" journalOrPublisher="Bioinformatics (Oxford, England)" pageId="0" pageNumber="105" refId="B10" refString="IUCN, 2012. IUCN Red List Categories and Criteria: Version 3.1. Second edition. Gland, Switzerland and Cambridge, UK: IUCN. iv + 32pp." title="IUCN Red List Categories and Criteria: Version 3.1. Second edition. Gland, Switzerland and Cambridge, UK: IUCN. iv + 32 pp." year="2012">IUCN 2012</bibRefCitation>
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).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="105" type="materials_examined">
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<paragraph pageId="0" pageNumber="105">Specimens examined.</paragraph>
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<paragraph pageId="0" pageNumber="105">
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<emphasis bold="true" pageId="0" pageNumber="105">China.</emphasis>
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Yunnan: Lan-cang Lahuzu Autonomous County, from Shang-yun to Xi-meng, Apr. 2, 2015,
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<emphasis italics="true" pageId="0" pageNumber="105">B. Liu, Y. Yang & T.W. Xiao 2675</emphasis>
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(PE); Jiang-cheng County, Qu-shui Prefecture, Apr. 18, 2015,
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<emphasis italics="true" pageId="0" pageNumber="105">B. Liu 3045</emphasis>
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(PE); Ma-li-po County, March 15-17, 2015,
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<emphasis italics="true" pageId="0" pageNumber="105">T. Wan MLP001, MLP002, MLP003, MLP 005</emphasis>
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(PE); Ma-li-po County, Xia-jin-chang Prefecture, Li-jia-wan, May 27, 2011,
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<emphasis italics="true" pageId="0" pageNumber="105">B. Liu 1360</emphasis>
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(PE); Ma-li-po County, Xia-jin-chang Prefecture, Li-jia-wan, Sept. 24, 2011,
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<emphasis italics="true" pageId="0" pageNumber="105">B. Liu 1441</emphasis>
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(PE); Ma-li-po County, Xia-jin-chang Prefecture, Li-jia-wan, Nov. 2, 2012,
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<emphasis italics="true" pageId="0" pageNumber="105">B. Liu 1725</emphasis>
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(PE). Guizhou: unknown collection date,
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<emphasis italics="true" pageId="0" pageNumber="105">C.Y. Deng CYD12466</emphasis>
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(PE).
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</paragraph>
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</subSubSection>
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</treatment>
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</document> |