337 lines
35 KiB
XML
337 lines
35 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/phytokeys.218.97485" ID-Pensoft-Pub="1314-2003-218-109" ID-Pensoft-UUID="BCC90AC8D10D5FBFAA260013AA77C435" ModsDocID="1314-2003-218-109" checkinTime="1673581390533" checkinUser="pensoft" docAuthor="Su, Xiu-Jiang, Fei, Wen-Qun, Zhao, Ding, Liu, Ying & Yang, Qin-Er" docDate="2023" docId="4DCDA901014E5547B2F36D5FA083C4CB" docLanguage="en" docName="PhytoKeys 218: 109-116" docOrigin="PhytoKeys 218" docPubDate="2023-01-12" docSource="http://dx.doi.org/10.3897/phytokeys.218.97485" docTitle="Sinosenecio pingwuensis Xiu J. Su, W. Q. Fei, Ying Liu & Q. E. Yang 2023, sp. nov." docType="treatment" docVersion="1" id="BCC90AC8D10D5FBFAA260013AA77C435" lastPageNumber="109" masterDocId="BCC90AC8D10D5FBFAA260013AA77C435" masterDocTitle="Sinosenecio pingwuensis (Asteraceae, Senecioneae), a new species from northern Sichuan, China" masterLastPageNumber="116" masterPageNumber="109" pageNumber="109" updateTime="1673581390533" updateUser="pensoft">
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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>Sinosenecio pingwuensis (Asteraceae, Senecioneae), a new species from northern Sichuan, 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>Su, Xiu-Jiang</mods:namePart>
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<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0002-3812-1372</mods:nameIdentifier>
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<mods:affiliation>Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510655, Guangdong, China & Administration Bureau of Baiyunshan Nature Reserve, Baojing 416500, Hunan, 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>Fei, Wen-Qun</mods:namePart>
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<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0001-9942-2120</mods:nameIdentifier>
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<mods:affiliation>Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510655, Guangdong, China & University of Chinese Academy of Sciences, Beijing 100049, 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>Zhao, Ding</mods:namePart>
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<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0002-8712-2515</mods:nameIdentifier>
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<mods:affiliation>Administration Bureau of Xuebaoding National Nature Reserve, Pingwu 622550, Sichuan, 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, Ying</mods:namePart>
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<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0003-0613-837X</mods:nameIdentifier>
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<mods:affiliation>State Key Laboratory of Biocontrol and Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, No. 135, Xin-Gang-Xi Road, Guangzhou 510275, Guangdong, 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>Yang, Qin-Er</mods:namePart>
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<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0002-6261-0731</mods:nameIdentifier>
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<mods:affiliation>Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510655, Guangdong, China & Center of Conservation Biology, Core Botanical Gardens, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510655, Guangdong, China</mods:affiliation>
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<mods:nameIdentifier type="email">qeyang@scbg.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>2023</mods:date>
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<mods:detail type="pubDate">
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<mods:number>2023-01-12</mods:number>
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</mods:detail>
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<mods:detail type="volume">
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<mods:number>218</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>109</mods:start>
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<mods:end>116</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.218.97485</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.218.97485</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1314-2003-218-109</mods:identifier>
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<mods:identifier type="Pensoft-UUID">BCC90AC8D10D5FBFAA260013AA77C435</mods:identifier>
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</mods:mods>
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<treatment LSID="urn:lsid:plazi:treatment:4DCDA901014E5547B2F36D5FA083C4CB" httpUri="http://treatment.plazi.org/id/4DCDA901014E5547B2F36D5FA083C4CB" lastPageNumber="109" pageId="0" pageNumber="109">
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<subSubSection pageId="0" pageNumber="109" type="nomenclature">
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<paragraph pageId="0" pageNumber="109">
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<taxonomicName LSID="4DCDA901-014E-5547-B2F3-6D5FA083C4CB" authority="Xiu J. Su, W. Q. Fei, Ying Liu & Q. E. Yang" authorityName="Xiu J. Su, W. Q. Fei, Ying Liu & Q. E. Yang" authorityYear="2023" class="Magnoliopsida" family="Asteraceae" genus="Sinosenecio" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Sinosenecio pingwuensis" order="Asterales" pageId="0" pageNumber="109" phylum="Tracheophyta" rank="species" species="pingwuensis" status="sp. nov.">Sinosenecio pingwuensis Xiu J.Su, W.Q.Fei, Ying Liu & Q.E.Yang</taxonomicName>
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<taxonomicNameLabel pageId="0" pageNumber="109">sp. nov.</taxonomicNameLabel>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="109" type="description">
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<paragraph pageId="0" pageNumber="109">
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<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Sinosenecio pingwuensis sp. nov. in the wild (China, Sichuan province, Pingwu county, the type locality) A, B habitat C-E habitat and habit F habit. Photographed by W. Q. Fei." figureDoi="10.3897/phytokeys.218.97485.figure1" httpUri="https://binary.pensoft.net/fig/794718" pageId="0" pageNumber="109">Figs 1</figureCitation>
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<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Sinosenecio pingwuensis sp. nov. in the wild (China, Sichuan province, Pingwu county, the type locality) A roots B portion of stem C radical leaves (adaxial side) D radical leaves (abaxial side) E radical leaf (left: adaxial side; right: abaxial side) F bracts on the scape G close-up of capitulum H capitulum (lateral view) and portion of scape I capitulum (top view) J phyllaries (adaxial side) K phyllaries (abaxial side) L ray florets M disc florets. Photographed by W. Q. Fei." figureDoi="10.3897/phytokeys.218.97485.figure2" httpUri="https://binary.pensoft.net/fig/794719" pageId="0" pageNumber="109">, 2</figureCitation>
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<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Holotype sheet of Sinosenecio pingwuensis sp. nov." figureDoi="10.3897/phytokeys.218.97485.figure3" httpUri="https://binary.pensoft.net/fig/794720" pageId="0" pageNumber="109">, 3</figureCitation>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="109" type="materials_examined">
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<paragraph pageId="0" pageNumber="109">
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<typeStatus>Type</typeStatus>
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.
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</paragraph>
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<paragraph pageId="0" pageNumber="109">
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<materialsCitation collectingDate="2022-06-06" collectorName="W. Q. Fei, J. Li, Fig." country="China" county="Pingwu county" elevation="2300" location="Xuebaoding National Nature Reserve" municipality="Huya town" specimenCount="1" stateProvince="Sichuan province" typeStatus="holotype">
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<collectingCountry name="China">China</collectingCountry>
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.
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<collectingRegion country="China" name="Sichuan">Sichuan province</collectingRegion>
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:
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<collectingCounty>Pingwu county</collectingCounty>
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,
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<collectingMunicipality>Huya town</collectingMunicipality>
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,
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<location LSID="urn:lsid:plazi:treatment:4DCDA901014E5547B2F36D5FA083C4CB:04E385CCC19A64AADDEAD1256DF20EB9" country="China" county="Pingwu county" municipality="Huya town" name="Xuebaoding National Nature Reserve" stateProvince="Sichuan province">Xuebaoding National Nature Reserve</location>
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, on moist rocky cliffs in valley, alt. ca.
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<quantity metricMagnitude="3" metricUnit="m" metricValue="2.3" unit="m" value="2300.0">
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<elevation metricMagnitude="3" metricUnit="m" metricValue="2.3" unit="m" value="2300.0">2300 m</elevation>
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</quantity>
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,
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<collectingDate value="2022-06-06">6 June 2022</collectingDate>
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,
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<emphasis italics="true" pageId="0" pageNumber="109">
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<collectorName>W. Q. Fei</collectorName>
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&
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<collectorName>J. Li</collectorName>
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562
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</emphasis>
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(
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<typeStatus>holotype</typeStatus>
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: IBSC; isotypes: CDBI, PE, SYS).
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<collectorName>Fig.</collectorName>
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<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Holotype sheet of Sinosenecio pingwuensis sp. nov." figureDoi="10.3897/phytokeys.218.97485.figure3" httpUri="https://binary.pensoft.net/fig/794720" pageId="0" pageNumber="109">3</figureCitation>
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</materialsCitation>
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.
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</paragraph>
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<caption doi="10.3897/phytokeys.218.97485.figure3" httpUri="https://binary.pensoft.net/fig/794720" pageId="0" pageNumber="109" start="Figure 3" startId="F3">
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<paragraph pageId="0" pageNumber="109">
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<emphasis bold="true" pageId="0" pageNumber="109">Figure 3.</emphasis>
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<typeStatus>Holotype</typeStatus>
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sheet of
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<taxonomicName authorityName="Xiu J. Su, W. Q. Fei, Ying Liu & Q. E. Yang" authorityYear="2023" class="Magnoliopsida" family="Asteraceae" genus="Sinosenecio" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Sinosenecio pingwuensis" order="Asterales" pageId="0" pageNumber="109" phylum="Tracheophyta" rank="species" species="pingwuensis">
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<emphasis italics="true" pageId="0" pageNumber="109">Sinosenecio pingwuensis</emphasis>
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</taxonomicName>
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sp. nov.
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</paragraph>
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</caption>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="109" type="diagnosis">
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<paragraph pageId="0" pageNumber="109">Diagnosis.</paragraph>
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<paragraph pageId="0" pageNumber="109">
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<taxonomicName authorityName="Xiu J. Su, W. Q. Fei, Ying Liu & Q. E. Yang" authorityYear="2023" class="Magnoliopsida" family="Asteraceae" genus="Sinosenecio" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Sinosenecio pingwuensis" order="Asterales" pageId="0" pageNumber="109" phylum="Tracheophyta" rank="species" species="pingwuensis">
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<emphasis italics="true" pageId="0" pageNumber="109">Sinosenecio pingwuensis</emphasis>
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</taxonomicName>
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is distinguished in the genus by having leathery, glabrous, ovate or ovate-oblong leaves often pinnately-veined and solitary capitula 2.3-4.3 cm in diameter.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="109" type="description">
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<paragraph pageId="0" pageNumber="109">Description.</paragraph>
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<paragraph pageId="0" pageNumber="109">
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Scapigerous herbs. Rhizomes 2-5 mm in diameter, clad in persistent petiole bases; collar densely sericeous-villous. Stems 1 or 2, erect, scapiform, 11-20 cm tall, simple, purplish, sparsely pubescent, more densely so at base and in upper part below the capitulum, sometimes glabrescent in the middle part. Leaves radical, rosulate, long petiolate; petioles 3.3-10 cm long, basally expanded, sparsely villous or pubescent, densely so at base, often glabrescent in the middle and upper parts; blades ovate or ovate-oblong, rarely broadly ovate, 1-4.5
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<normalizedToken originalValue="×">x</normalizedToken>
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0.9-3 cm, leathery, abaxially purplish, adaxially green or dark green, glabrous on both sides, palmately 5-7-veined or pinnately-veined due to some of the main veins arising from the mid-rib above the base, veins conspicuous adaxially,
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<normalizedToken originalValue="±">+/-</normalizedToken>
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raised abaxially, margin dentate, rarely mucronulate, base truncate, rounded or cuneate, apex acute or obtuse. Capitula terminal, solitary, radiating, 2.3-4.3 cm in diameter; scape often bearing 2-6 sessile, linear bracts 4-16 mm long in the middle and upper parts, rarely the lowest one with petiole 1-3 cm long. Involucres campanulate, 7-9
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<normalizedToken originalValue="×">x</normalizedToken>
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5.5-7.5 mm, ecalyculate; phyllaries 8-13, ovate-oblong to linear-oblong, 1.5-3.5 mm wide, herbaceous, sparsely pubescent with blackish purple hairs in the middle and at base, sometimes glabrescent, margin scarious, apically purplish, ciliate, acuminate. Ray florets 11-13; corolla tube 2-3 mm long, glabrous; lamina yellow, oblong, 14-17
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<normalizedToken originalValue="×">x</normalizedToken>
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2-3 mm, 4-7-veined, apically 3-denticulate. Disc florets 33-55; corolla yellow, ca. 6 mm long, with ca. 3 mm long tube and funnelform campanulate limb; lobes ovate-oblong, ca. 1 mm long, apically acuminate. Anthers oblong, ca. 2 mm long, basally obtuse. Style branches 0.5 mm long, recurved, apically truncate, papillose. Achenes cylindrical, ca. 2.5 mm long (immature), smooth, glabrous, ribbed. Pappus white, 5-6 mm long.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="109" type="description">
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<paragraph pageId="0" pageNumber="109">Floral micromorphological characters and achene surface features.</paragraph>
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<paragraph pageId="0" pageNumber="109">
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The filament collar of stamens in
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<taxonomicName authorityName="Xiu J. Su, W. Q. Fei, Ying Liu & Q. E. Yang" authorityYear="2023" class="Magnoliopsida" family="Asteraceae" genus="Sinosenecio" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Sinosenecio pingwuensis" order="Asterales" pageId="0" pageNumber="109" phylum="Tracheophyta" rank="species" species="pingwuensis">
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<emphasis italics="true" pageId="0" pageNumber="109">Sinosenecio pingwuensis</emphasis>
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</taxonomicName>
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consists of uniformly-sized cells (Fig.
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<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Two floral micromorphological characters (A, B) and achene surface feature (C) of Sinosenecio pingwuensis sp. nov. A uniformly-sized cells of filament collar of stamens B strictly polar anther endothecial cell wall thickenings C smooth achene surface. All from W. Q. Fei & J. Li 562 (IBSC, SYS) from Pingwu county in northern Sichuan province, China." figureDoi="10.3897/phytokeys.218.97485.figure4" httpUri="https://binary.pensoft.net/fig/794721" pageId="0" pageNumber="109">4A</figureCitation>
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) and the anther endothecial cell wall thickenings are strictly polar (Fig.
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<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Two floral micromorphological characters (A, B) and achene surface feature (C) of Sinosenecio pingwuensis sp. nov. A uniformly-sized cells of filament collar of stamens B strictly polar anther endothecial cell wall thickenings C smooth achene surface. All from W. Q. Fei & J. Li 562 (IBSC, SYS) from Pingwu county in northern Sichuan province, China." figureDoi="10.3897/phytokeys.218.97485.figure4" httpUri="https://binary.pensoft.net/fig/794721" pageId="0" pageNumber="109">4B</figureCitation>
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). The achene is glabrous and smooth (Fig.
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<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Two floral micromorphological characters (A, B) and achene surface feature (C) of Sinosenecio pingwuensis sp. nov. A uniformly-sized cells of filament collar of stamens B strictly polar anther endothecial cell wall thickenings C smooth achene surface. All from W. Q. Fei & J. Li 562 (IBSC, SYS) from Pingwu county in northern Sichuan province, China." figureDoi="10.3897/phytokeys.218.97485.figure4" httpUri="https://binary.pensoft.net/fig/794721" pageId="0" pageNumber="109">4C</figureCitation>
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).
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</paragraph>
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<caption doi="10.3897/phytokeys.218.97485.figure4" httpUri="https://binary.pensoft.net/fig/794721" pageId="0" pageNumber="109" start="Figure 4" startId="F4">
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<paragraph pageId="0" pageNumber="109">
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<emphasis bold="true" pageId="0" pageNumber="109">Figure 4.</emphasis>
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Two floral micromorphological characters (
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<emphasis bold="true" pageId="0" pageNumber="109">A, B</emphasis>
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) and achene surface feature (
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<emphasis bold="true" pageId="0" pageNumber="109">C</emphasis>
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) of
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<taxonomicName authorityName="Xiu J. Su, W. Q. Fei, Ying Liu & Q. E. Yang" authorityYear="2023" class="Magnoliopsida" family="Asteraceae" genus="Sinosenecio" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Sinosenecio pingwuensis" order="Asterales" pageId="0" pageNumber="109" phylum="Tracheophyta" rank="species" species="pingwuensis">
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<emphasis italics="true" pageId="0" pageNumber="109">Sinosenecio pingwuensis</emphasis>
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</taxonomicName>
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sp. nov.
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<emphasis bold="true" pageId="0" pageNumber="109">A</emphasis>
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uniformly-sized cells of filament collar of stamens
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<emphasis bold="true" pageId="0" pageNumber="109">B</emphasis>
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strictly polar anther endothecial cell wall thickenings
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<emphasis bold="true" pageId="0" pageNumber="109">C</emphasis>
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smooth achene surface. All from
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<emphasis italics="true" pageId="0" pageNumber="109">W.Q. Fei & J. Li 562</emphasis>
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(IBSC, SYS) from Pingwu county in northern Sichuan province, China.
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</paragraph>
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</caption>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="109" type="phenology">
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<paragraph pageId="0" pageNumber="109">Phenology.</paragraph>
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<paragraph pageId="0" pageNumber="109">Flowering in June; fruiting in July.</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="109" type="etymology">
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<paragraph pageId="0" pageNumber="109">Etymology.</paragraph>
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<paragraph pageId="0" pageNumber="109">
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The specific epithet, "
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<emphasis italics="true" pageId="0" pageNumber="109">pingwuensis</emphasis>
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", refers to the type locality of the new species, i.e. Pingwu county in northern Sichuan, China.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="109" type="distribution">
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<paragraph pageId="0" pageNumber="109">Distribution and habitat.</paragraph>
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<paragraph pageId="0" pageNumber="109">
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<taxonomicName authorityName="Xiu J. Su, W. Q. Fei, Ying Liu & Q. E. Yang" authorityYear="2023" class="Magnoliopsida" family="Asteraceae" genus="Sinosenecio" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Sinosenecio pingwuensis" order="Asterales" pageId="0" pageNumber="109" phylum="Tracheophyta" rank="species" species="pingwuensis">
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<emphasis italics="true" pageId="0" pageNumber="109">Sinosenecio pingwuensis</emphasis>
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</taxonomicName>
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is currently known only from its type locality, i.e. Pingwu county in northern Sichuan, China (Fig.
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<figureCitation captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Distribution of Sinosenecio pingwuensis sp. nov. (black square)." figureDoi="10.3897/phytokeys.218.97485.figure5" httpUri="https://binary.pensoft.net/fig/794722" pageId="0" pageNumber="109">5</figureCitation>
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). It grows on moist rocky cliffs along stream sides in a valley at an altitude of ca. 2300 m above sea level.
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</paragraph>
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<caption doi="10.3897/phytokeys.218.97485.figure5" httpUri="https://binary.pensoft.net/fig/794722" pageId="0" pageNumber="109" start="Figure 5" startId="F5">
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<paragraph pageId="0" pageNumber="109">
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<emphasis bold="true" pageId="0" pageNumber="109">Figure 5.</emphasis>
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Distribution of
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<taxonomicName authorityName="Xiu J. Su, W. Q. Fei, Ying Liu & Q. E. Yang" authorityYear="2023" class="Magnoliopsida" family="Asteraceae" genus="Sinosenecio" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Sinosenecio pingwuensis" order="Asterales" pageId="0" pageNumber="109" phylum="Tracheophyta" rank="species" species="pingwuensis">
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<emphasis italics="true" pageId="0" pageNumber="109">Sinosenecio pingwuensis</emphasis>
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||
</taxonomicName>
|
||
sp. nov. (black square).
|
||
</paragraph>
|
||
</caption>
|
||
</subSubSection>
|
||
<subSubSection pageId="0" pageNumber="109" type="conservation status">
|
||
<paragraph pageId="0" pageNumber="109">Conservation status.</paragraph>
|
||
<paragraph pageId="0" pageNumber="109">
|
||
The currently only known population of
|
||
<taxonomicName authorityName="Xiu J. Su, W. Q. Fei, Ying Liu & Q. E. Yang" authorityYear="2023" class="Magnoliopsida" family="Asteraceae" genus="Sinosenecio" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Sinosenecio pingwuensis" order="Asterales" pageId="0" pageNumber="109" phylum="Tracheophyta" rank="species" species="pingwuensis">
|
||
<emphasis italics="true" pageId="0" pageNumber="109">Sinosenecio pingwuensis</emphasis>
|
||
</taxonomicName>
|
||
at the type locality comprises ca. 80 individuals growing on rocky cliffs. They are scattered within ca. 1 km along a valley. Although the population is located in the Xuebaoding National Nature Reserve, some human activities, road building in particular, may destroy the habitat of the population and, thus, severely affect the survival of this species. According to the IUCN Red List Categories and Criteria (
|
||
<bibRefCitation author="Chen, B" journalOrPublisher="20 - 21. Science Press, Beijing" pageId="0" pageNumber="109" refId="B3" refString="IUCN (2012) IUCN Red List Categories and Criteria: Version 3.1. 2nd edn. Gland, Switzerland and Cambridge, UK, 1-32." year="2022">IUCN 2012</bibRefCitation>
|
||
), the new species should be categorised as Critically Endangered (CR).
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection pageId="0" pageNumber="109" type="notes">
|
||
<paragraph pageId="0" pageNumber="109">Notes.</paragraph>
|
||
<paragraph pageId="0" pageNumber="109">
|
||
The genus
|
||
<taxonomicName class="Magnoliopsida" family="Asteraceae" genus="Sinosenecio" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Sinosenecio" order="Asterales" pageId="0" pageNumber="109" phylum="Tracheophyta" rank="genus">
|
||
<emphasis italics="true" pageId="0" pageNumber="109">Sinosenecio</emphasis>
|
||
</taxonomicName>
|
||
, as defined by
|
||
<bibRefCitation author="Chen, YL" editor="Wu, ZY" journalOrPublisher="20 - 21. Science Press, Beijing" pageId="0" pageNumber="109" pagination="464 - 481" refId="B1" refString="Chen, YL, Liu, Y, Yang, QE, Nordenstam, B, Jeffrey, C, 2011. Sinosenecio B. Nordenstam. In: Wu, ZY, Raven, PH, Hong, DY, Eds., Flora of China Vol. 20-21. Science Press, Beijing: 464 - 481" title="Sinosenecio B. Nordenstam." volumeTitle="Flora of China Vol." year="2011">Chen et al. (2011)</bibRefCitation>
|
||
, comprises two major species assemblages with different configurations of anther endothecial cell wall thickenings (polar and radial vs. strictly polar), different base chromosome numbers (
|
||
<emphasis italics="true" pageId="0" pageNumber="109">x</emphasis>
|
||
= 24, rarely 13 vs.
|
||
<emphasis italics="true" pageId="0" pageNumber="109">x</emphasis>
|
||
= 30) and different geographical distributions (central and southern China vs. areas largely surrounding the Sichuan basin in south-western China) (
|
||
<bibRefCitation author="Liu, Y" journalOrPublisher="20 - 21. Science Press, Beijing" pageId="0" pageNumber="109" refId="B4" refString="Liu, Y, 2010. Systematics of the genus Sinosenecio B. Nord. (Asteraceae). Ph.D. thesis, Institute of Botany, Chinese Academy of Sciences, Beijing, 1-277." title="Systematics of the genus Sinosenecio B. Nord. (Asteraceae). Ph. D. thesis, Institute of Botany, Chinese Academy of Sciences, Beijing, 1 - 277." year="2010">Liu 2010</bibRefCitation>
|
||
;
|
||
<bibRefCitation DOI="https://doi.org/10.1007/s00606-010-0365-3" author="Liu, Y" journalOrPublisher="20 - 21. Science Press, Beijing" pageId="0" pageNumber="109" refId="B5" refString="Liu, Y, Yang, QE, 2011a. Cytology and its systematic implications in Sinosenecio (Senecioneae-Asteraceae) and two closely related genera. Plant Systematics and Evolution 291(1): 7-24. https://doi.org/10.1007/s00606-010-0365-3" title="Cytology and its systematic implications in Sinosenecio (Senecioneae-Asteraceae) and two closely related genera. Plant Systematics and Evolution 291 (1): 7 - 24." url="https://doi.org/10.1007/s00606-010-0365-3" year="2011 a">Liu and Yang 2011a</bibRefCitation>
|
||
,
|
||
<bibRefCitation DOI="https://doi.org/10.1007/s00606-010-0385-z" author="Liu, Y" journalOrPublisher="20 - 21. Science Press, Beijing" pageId="0" pageNumber="109" refId="B6" refString="Liu, Y, Yang, QE, 2011b. Floral micromorphology and its systematic implications in the genus Sinosenecio (Senecioneae-Asteraceae). Plant Systematics and Evolution 291(3-4): 243-256. https://doi.org/10.1007/s00606-010-0385-z" title="Floral micromorphology and its systematic implications in the genus Sinosenecio (Senecioneae-Asteraceae). Plant Systematics and Evolution 291 (3 - 4): 243 - 256." url="https://doi.org/10.1007/s00606-010-0385-z" year="2011 b">b</bibRefCitation>
|
||
,
|
||
<bibRefCitation author="Liu, Y" journalOrPublisher="Botanical Studies (Taipei, Taiwan)" pageId="0" pageNumber="109" pagination="401 - 414" refId="B7" refString="Liu, Y, Yang, QE, 2012. Sinosenecio jiangxiensis (Asteraceae), a new species from Jiangxi, China. Botanical Studies (Taipei, Taiwan) 53 (3): 401 - 414" title="Sinosenecio jiangxiensis (Asteraceae), a new species from Jiangxi, China." volume="53" year="2012">2012</bibRefCitation>
|
||
;
|
||
<bibRefCitation DOI="https://doi.org/10.11646/phytotaxa.406.3.7" author="Liu, Y" journalOrPublisher="Botanical Studies (Taipei, Taiwan)" pageId="0" pageNumber="109" refId="B8" refString="Liu, Y, Xu, Y, Yang, QE, 2019. Sinosenecio peltatus (Asteraceae, Senecioneae), a remarkably distinctive new species from Guangdong, China. Phytotaxa 406(3): 206-212. https://doi.org/10.11646/phytotaxa.406.3.7" title="Sinosenecio peltatus (Asteraceae, Senecioneae), a remarkably distinctive new species from Guangdong, China. Phytotaxa 406 (3): 206 - 212." url="https://doi.org/10.11646/phytotaxa.406.3.7" year="2019">Liu et al. 2019</bibRefCitation>
|
||
;
|
||
<bibRefCitation DOI="https://doi.org/10.11646/phytotaxa.460.2.5" author="Zou, CY" journalOrPublisher="Botanical Studies (Taipei, Taiwan)" pageId="0" pageNumber="109" refId="B10" refString="Zou, CY, Liu, Y, Liu, Y, 2020. Sinosenecio ovatifolius (Asteraceae), a new species from Guangxi, China. Phytotaxa 460(2): 149-159. https://doi.org/10.11646/phytotaxa.460.2.5" title="Sinosenecio ovatifolius (Asteraceae), a new species from Guangxi, China. Phytotaxa 460 (2): 149 - 159." url="https://doi.org/10.11646/phytotaxa.460.2.5" year="2020">Zou et al. 2020</bibRefCitation>
|
||
;
|
||
<bibRefCitation DOI="https://doi.org/10.11646/phytotaxa.544.3.3" author="Chen, B" journalOrPublisher="20 - 21. Science Press, Beijing" pageId="0" pageNumber="109" refId="B2" refString="Chen, B, Liu, Y, Luo, JX, Wang, Q, Yang, QE, 2022. Sinosenecio jiuzhaigouensis (Asteraceae, Senecioneae), a new species from Sichuan, China. Phytotaxa 544(3): 289-294. https://doi.org/10.11646/phytotaxa.544.3.3" title="Sinosenecio jiuzhaigouensis (Asteraceae, Senecioneae), a new species from Sichuan, China. Phytotaxa 544 (3): 289 - 294." url="https://doi.org/10.11646/phytotaxa.544.3.3" year="2022">Chen et al. 2022</bibRefCitation>
|
||
;
|
||
<bibRefCitation DOI="https://doi.org/10.3897/phytokeys.5555.89480" author="Peng, JY" journalOrPublisher="Botanical Studies (Taipei, Taiwan)" pageId="0" pageNumber="109" refId="B9" refString="Peng, JY, Zhang, DG, Deng, T, Huang, XH, Chen, JT, Meng, Y, Wang, Y, Zhou, Q, 2022. Sinosenecio yangii (Asteraceae), a new species from Guizhou, China. PhytoKeys 210(34): 1-13. https://doi.org/10.3897/phytokeys.5555.89480" title="Sinosenecio yangii (Asteraceae), a new species from Guizhou, China. PhytoKeys 210 (34): 1 - 13." url="https://doi.org/10.3897/phytokeys.5555.89480" year="2022">Peng et al. 2022</bibRefCitation>
|
||
). Judging from its strictly polar anther endothecial cell wall thickenings and its occurrence only in Pingwu county at the northern margin of the Sichuan basin,
|
||
<taxonomicName lsidName="S. pingwuensis" pageId="0" pageNumber="109" rank="species" species="pingwuensis">
|
||
<emphasis italics="true" pageId="0" pageNumber="109">S. pingwuensis</emphasis>
|
||
</taxonomicName>
|
||
should belong to the latter assemblage, in which 14 species are currently recognised, including
|
||
<taxonomicName lsidName="S. homogyniphyllus" pageId="0" pageNumber="109" rank="species" species="homogyniphyllus">
|
||
<emphasis italics="true" pageId="0" pageNumber="109">S. homogyniphyllus</emphasis>
|
||
</taxonomicName>
|
||
(Cumm.) B. Nord., the type species of
|
||
<taxonomicName class="Magnoliopsida" family="Asteraceae" genus="Sinosenecio" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Sinosenecio" order="Asterales" pageId="0" pageNumber="109" phylum="Tracheophyta" rank="genus">
|
||
<emphasis italics="true" pageId="0" pageNumber="109">Sinosenecio</emphasis>
|
||
</taxonomicName>
|
||
(
|
||
<bibRefCitation author="Liu, Y" journalOrPublisher="20 - 21. Science Press, Beijing" pageId="0" pageNumber="109" refId="B4" refString="Liu, Y, 2010. Systematics of the genus Sinosenecio B. Nord. (Asteraceae). Ph.D. thesis, Institute of Botany, Chinese Academy of Sciences, Beijing, 1-277." title="Systematics of the genus Sinosenecio B. Nord. (Asteraceae). Ph. D. thesis, Institute of Botany, Chinese Academy of Sciences, Beijing, 1 - 277." year="2010">Liu 2010</bibRefCitation>
|
||
;
|
||
<bibRefCitation author="Chen, YL" editor="Wu, ZY" journalOrPublisher="20 - 21. Science Press, Beijing" pageId="0" pageNumber="109" pagination="464 - 481" refId="B1" refString="Chen, YL, Liu, Y, Yang, QE, Nordenstam, B, Jeffrey, C, 2011. Sinosenecio B. Nordenstam. In: Wu, ZY, Raven, PH, Hong, DY, Eds., Flora of China Vol. 20-21. Science Press, Beijing: 464 - 481" title="Sinosenecio B. Nordenstam." volumeTitle="Flora of China Vol." year="2011">Chen et al. 2011</bibRefCitation>
|
||
;
|
||
<bibRefCitation DOI="https://doi.org/10.11646/phytotaxa.544.3.3" author="Chen, B" journalOrPublisher="20 - 21. Science Press, Beijing" pageId="0" pageNumber="109" refId="B2" refString="Chen, B, Liu, Y, Luo, JX, Wang, Q, Yang, QE, 2022. Sinosenecio jiuzhaigouensis (Asteraceae, Senecioneae), a new species from Sichuan, China. Phytotaxa 544(3): 289-294. https://doi.org/10.11646/phytotaxa.544.3.3" title="Sinosenecio jiuzhaigouensis (Asteraceae, Senecioneae), a new species from Sichuan, China. Phytotaxa 544 (3): 289 - 294." url="https://doi.org/10.11646/phytotaxa.544.3.3" year="2022">Chen et al. 2022</bibRefCitation>
|
||
). Regrettably, we have been unable to check the chromosome number of
|
||
<taxonomicName lsidName="S. pingwuensis" pageId="0" pageNumber="109" rank="species" species="pingwuensis">
|
||
<emphasis italics="true" pageId="0" pageNumber="109">S. pingwuensis</emphasis>
|
||
</taxonomicName>
|
||
due to our failure in transplanting living plants to obtain actively growing roots for squashing. From its configuration of strictly polar anther endothecial cell wall thickenings,
|
||
<taxonomicName lsidName="S. pingwuensis" pageId="0" pageNumber="109" rank="species" species="pingwuensis">
|
||
<emphasis italics="true" pageId="0" pageNumber="109">S. pingwuensis</emphasis>
|
||
</taxonomicName>
|
||
should have a somatic chromosome number (2
|
||
<emphasis italics="true" pageId="0" pageNumber="109">n</emphasis>
|
||
), based on
|
||
<emphasis italics="true" pageId="0" pageNumber="109">x</emphasis>
|
||
= 30, very likely 2
|
||
<emphasis italics="true" pageId="0" pageNumber="109">n</emphasis>
|
||
= 60, the commonest somatic chromosome number in this assemblage (
|
||
<bibRefCitation DOI="https://doi.org/10.1007/s00606-010-0365-3" author="Liu, Y" journalOrPublisher="20 - 21. Science Press, Beijing" pageId="0" pageNumber="109" refId="B5" refString="Liu, Y, Yang, QE, 2011a. Cytology and its systematic implications in Sinosenecio (Senecioneae-Asteraceae) and two closely related genera. Plant Systematics and Evolution 291(1): 7-24. https://doi.org/10.1007/s00606-010-0365-3" title="Cytology and its systematic implications in Sinosenecio (Senecioneae-Asteraceae) and two closely related genera. Plant Systematics and Evolution 291 (1): 7 - 24." url="https://doi.org/10.1007/s00606-010-0365-3" year="2011 a">Liu and Yang 2011a</bibRefCitation>
|
||
). In
|
||
<taxonomicName class="Magnoliopsida" family="Asteraceae" genus="Sinosenecio" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Sinosenecio" order="Asterales" pageId="0" pageNumber="109" phylum="Tracheophyta" rank="genus">
|
||
<emphasis italics="true" pageId="0" pageNumber="109">Sinosenecio</emphasis>
|
||
</taxonomicName>
|
||
, the strictly polar anther endothecial cell wall thickenings correlate well with the base chromosome number of
|
||
<emphasis italics="true" pageId="0" pageNumber="109">x</emphasis>
|
||
= 30 (
|
||
<bibRefCitation author="Liu, Y" journalOrPublisher="20 - 21. Science Press, Beijing" pageId="0" pageNumber="109" refId="B4" refString="Liu, Y, 2010. Systematics of the genus Sinosenecio B. Nord. (Asteraceae). Ph.D. thesis, Institute of Botany, Chinese Academy of Sciences, Beijing, 1-277." title="Systematics of the genus Sinosenecio B. Nord. (Asteraceae). Ph. D. thesis, Institute of Botany, Chinese Academy of Sciences, Beijing, 1 - 277." year="2010">Liu 2010</bibRefCitation>
|
||
;
|
||
<bibRefCitation DOI="https://doi.org/10.1007/s00606-010-0365-3" author="Liu, Y" journalOrPublisher="20 - 21. Science Press, Beijing" pageId="0" pageNumber="109" refId="B5" refString="Liu, Y, Yang, QE, 2011a. Cytology and its systematic implications in Sinosenecio (Senecioneae-Asteraceae) and two closely related genera. Plant Systematics and Evolution 291(1): 7-24. https://doi.org/10.1007/s00606-010-0365-3" title="Cytology and its systematic implications in Sinosenecio (Senecioneae-Asteraceae) and two closely related genera. Plant Systematics and Evolution 291 (1): 7 - 24." url="https://doi.org/10.1007/s00606-010-0365-3" year="2011 a">Liu and Yang 2011a</bibRefCitation>
|
||
,
|
||
<bibRefCitation DOI="https://doi.org/10.1007/s00606-010-0385-z" author="Liu, Y" journalOrPublisher="20 - 21. Science Press, Beijing" pageId="0" pageNumber="109" refId="B6" refString="Liu, Y, Yang, QE, 2011b. Floral micromorphology and its systematic implications in the genus Sinosenecio (Senecioneae-Asteraceae). Plant Systematics and Evolution 291(3-4): 243-256. https://doi.org/10.1007/s00606-010-0385-z" title="Floral micromorphology and its systematic implications in the genus Sinosenecio (Senecioneae-Asteraceae). Plant Systematics and Evolution 291 (3 - 4): 243 - 256." url="https://doi.org/10.1007/s00606-010-0385-z" year="2011 b">b</bibRefCitation>
|
||
).
|
||
</paragraph>
|
||
<paragraph pageId="0" pageNumber="109">
|
||
In the same valley where
|
||
<taxonomicName authorityName="Xiu J. Su, W. Q. Fei, Ying Liu & Q. E. Yang" authorityYear="2023" class="Magnoliopsida" family="Asteraceae" genus="Sinosenecio" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Sinosenecio pingwuensis" order="Asterales" pageId="0" pageNumber="109" phylum="Tracheophyta" rank="species" species="pingwuensis">
|
||
<emphasis italics="true" pageId="0" pageNumber="109">Sinosenecio pingwuensis</emphasis>
|
||
</taxonomicName>
|
||
occurs, we discovered another hitherto undescribed species of
|
||
<taxonomicName class="Magnoliopsida" family="Asteraceae" genus="Sinosenecio" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Sinosenecio" order="Asterales" pageId="0" pageNumber="109" phylum="Tracheophyta" rank="genus">
|
||
<emphasis italics="true" pageId="0" pageNumber="109">Sinosenecio</emphasis>
|
||
</taxonomicName>
|
||
. This species and
|
||
<taxonomicName lsidName="S. pingwuensis" pageId="0" pageNumber="109" rank="species" species="pingwuensis">
|
||
<emphasis italics="true" pageId="0" pageNumber="109">S. pingwuensis</emphasis>
|
||
</taxonomicName>
|
||
should belong to the same species assemblage of the genus. Both prefer shaded and moist microhabitat and grow on rocky cliffs. Although they do not grow strictly in the same community, some individuals of them are less than 100 m away from each other and they begin to flower at the same time (in June). We did not observe, however, any morphologically putative hybrids between them. This is probably due to isolation via intrinsic post-zygotic barriers. We will report this undescribed species elsewhere.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |