665 lines
55 KiB
XML
665 lines
55 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/phytokeys.126.35442" ID-PMC="PMC6650441" ID-Pensoft-Pub="1314-2003-126-127" ID-Pensoft-UUID="351B7572FFEFFF8DFFFDFF95FE11123D" ID-PubMed="31360097" ID-Zenodo-Dep="3348549" ModsDocID="1314-2003-126-127" checkinTime="1563287729338" checkinUser="pensoft" docAuthor="Guo, Yue-Ning, Chen, Shao-Feng, Chen, Ming-Lin & Li, Bo" docDate="2019" docId="47246DA0BFDA56AAA92C8F4E00ADBC80" docLanguage="en" docName="PhytoKeys 126: 127-138" docOrigin="PhytoKeys 126" docPubDate="2019-07-16" docSource="http://dx.doi.org/10.3897/phytokeys.126.35442" docTitle="Persicaria rotunda Bo Li, comb. & 2019, stat. nov." docType="treatment" docVersion="3" id="351B7572FFEFFF8DFFFDFF95FE11123D" lastPageNumber="134" masterDocId="351B7572FFEFFF8DFFFDFF95FE11123D" masterDocTitle="Persicaria jucunda var. rotunda (Polygonaceae, Persicarieae), a distinct distylous taxa raised to specific rank" masterLastPageNumber="138" masterPageNumber="127" pageNumber="129" updateTime="1668139358172" 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>Persicaria jucunda var. rotunda (Polygonaceae, Persicarieae), a distinct distylous taxa raised to specific rank</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>Guo, Yue-Ning</mods:namePart>
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<mods:affiliation>School of Life Sciences, Nanchang University, Nanchang 330031, Jiangxi, 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>Chen, Shao-Feng</mods:namePart>
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<mods:affiliation>School of Life Sciences, Nanchang University, Nanchang 330031, Jiangxi, 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>Chen, Ming-Lin</mods:namePart>
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<mods:affiliation>Provincial Key Laboratory of Biotic Environment and Ecological Safety in Anhui, Anhui Normal University, Wuhu 241000, Anhui, 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>Li, Bo</mods:namePart>
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<mods:affiliation>Research Centre of Ecological Sciences, Jiangxi Agricultural University, Nanchang 330045, Jiangxi, China</mods:affiliation>
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<mods:nameIdentifier type="email">hanbolijx@163.com</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>2019</mods:date>
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<mods:detail type="pubDate">
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<mods:number>2019-07-16</mods:number>
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</mods:detail>
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<mods:detail type="volume">
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<mods:number>126</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>127</mods:start>
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<mods:end>138</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.126.35442</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.126.35442</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1314-2003-126-127</mods:identifier>
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<mods:identifier type="Pensoft-UUID">351B7572FFEFFF8DFFFDFF95FE11123D</mods:identifier>
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<mods:identifier type="Zenodo-Dep">3348549</mods:identifier>
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</mods:mods>
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<treatment ID-GBIF-Taxon="182224925" LSID="urn:lsid:plazi:treatment:47246DA0BFDA56AAA92C8F4E00ADBC80" httpUri="http://treatment.plazi.org/id/47246DA0BFDA56AAA92C8F4E00ADBC80" lastPageId="7" lastPageNumber="134" pageId="2" pageNumber="129">
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<subSubSection pageId="2" pageNumber="129" type="nomenclature">
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<paragraph pageId="2" pageNumber="129">
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<taxonomicName LSID="47246DA0-BFDA-56AA-A92C-8F4E00ADBC80" authority="(Z. Z. Zhou & Q. Y. Sun) Bo Li, comb. &" authorityName="Bo Li, comb. &" authorityYear="2019" baseAuthorityName="Z. Z. Zhou & Q. Y. Sun" baseAuthorityYear="2019" class="Magnoliopsida" family="Polygonaceae" genus="Persicaria" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Persicaria rotunda" order="Caryophyllales" pageId="2" pageNumber="129" phylum="Tracheophyta" rank="species" species="rotunda" status="stat. nov.">Persicaria rotunda (Z.Z.Zhou & Q.Y.Sun) Bo Li, comb. &</taxonomicName>
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<taxonomicNameLabel pageId="2" pageNumber="129">stat. nov.</taxonomicNameLabel>
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<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Persicaria rotunda (Z. Z. Zhou & Q. Y. Sun) Bo Li A plant community with P. rotunda B close-up view of an individual in situ C an individual showing branches D leaves E leaf base F ocrea G inflorescences. Scale bars: 1 cm (E, F, G)." figureDoi="10.3897/phytokeys.126.35442.figure1" httpUri="https://binary.pensoft.net/fig/317897" pageId="2" pageNumber="129">Figures 1</figureCitation>
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<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Line drawing of Persicaria rotunda (Z. Z. Zhou & Q. Y. Sun) Bo Li A branches and inflorescences B ocrea and leaf C inflorescence D S-morph flower and its pistil E L-morph flower and its pistil F S-morph achene G L-morph achene." figureDoi="10.3897/phytokeys.126.35442.figure2" httpUri="https://binary.pensoft.net/fig/317898" pageId="2" pageNumber="129">, 2</figureCitation>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="2" pageNumber="129" type="reference_group">
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<paragraph pageId="2" pageNumber="129">
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<taxonomicName authorityName="Guo & Chen & Chen & Li" authorityYear="2019" baseAuthorityName="Guo & Chen & Chen & Li" baseAuthorityYear="2019" class="Magnoliopsida" family="Polygonaceae" genus="Persicaria" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Persicaria rotunda" order="Caryophyllales" pageId="2" pageNumber="129" phylum="Tracheophyta" rank="species" species="rotunda" status="stat. nov.">Persicaria rotunda</taxonomicName>
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≡
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<taxonomicName authorityName="Guo & Chen & Chen & Li" authorityYear="2019" class="Magnoliopsida" family="Polygonaceae" genus="Polygonum" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Polygonum jucundum subsp. var. var. rotundum" order="Caryophyllales" pageId="2" pageNumber="129" phylum="Tracheophyta" rank="variety" species="jucundum" status="stat. nov." subSpecies="var." variety="rotundum">Polygonum jucundum Meisn. var. rotundum</taxonomicName>
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Z.Z.Zhou & Q.Y.Sun, Acta Phytotax. Sin. 45(5): 714 (713-718; figs.). 2007.
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<emphasis bold="true" pageId="2" pageNumber="129">Type</emphasis>
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: CHINA. Anhui Province, Dongzhi County, Shengjin Lake, on riparian plains, Alt. 6-20 m, 4 October 2006,
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<emphasis italics="true" pageId="2" pageNumber="129">Z.Z.Zhou 0602</emphasis>
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(holotype: PE!, isotype: ANU).
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</paragraph>
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<paragraph pageId="2" pageNumber="129">
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<taxonomicName authorityName="Guo & Chen & Chen & Li" authorityYear="2019" baseAuthorityName="Guo & Chen & Chen & Li" baseAuthorityYear="2019" class="Magnoliopsida" family="Polygonaceae" genus="Persicaria" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Persicaria rotunda" order="Caryophyllales" pageId="2" pageNumber="129" phylum="Tracheophyta" rank="species" species="rotunda" status="stat. nov.">Persicaria rotunda</taxonomicName>
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≡
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<taxonomicName authorityName="Guo & Chen & Chen & Li" authorityYear="2019" baseAuthorityName="Guo & Chen & Chen & Li" baseAuthorityYear="2019" class="Magnoliopsida" family="Polygonaceae" genus="Persicaria" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Persicaria jucunda subsp. var. var. rotunda" order="Caryophyllales" pageId="2" pageNumber="129" phylum="Tracheophyta" rank="variety" species="jucunda" status="stat. nov." subSpecies="var." variety="rotunda">Persicaria jucunda (Meisn.) Migo var. rotunda</taxonomicName>
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(Z.Z.Zhou & Q.Y.Sun) Bo Li, Phytotaxa 91 (1): 24. 2013.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="2" pageNumber="129" type="diagnosis">
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<paragraph pageId="2" pageNumber="129">Diagnosis.</paragraph>
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<paragraph pageId="2" pageNumber="129">
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This species is easily distinguished from other
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<taxonomicName class="Magnoliopsida" family="Polygonaceae" genus="Persicaria" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Persicaria" order="Caryophyllales" pageId="2" pageNumber="129" phylum="Tracheophyta" rank="genus">
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<emphasis italics="true" pageId="2" pageNumber="129">Persicaria</emphasis>
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</taxonomicName>
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taxa by its completely decumbent leafless basal branches, almost sessile leaves, truncate, linear-lanceolate leaf blades, spicate, short and dense inflorescences, pedicels longer than bracts and dimorphic flowers and achenes. It occurs as one of the dominant species of some lakeshore plant communities in several large wetlands of northern Jiangxi and south-western Anhui provinces, eastern China.
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</paragraph>
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</subSubSection>
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<subSubSection lastPageId="4" lastPageNumber="131" pageId="2" pageNumber="129" type="description">
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<paragraph pageId="2" pageNumber="129">Description.</paragraph>
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<paragraph lastPageId="4" lastPageNumber="131" pageId="2" pageNumber="129">
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<emphasis italics="true" pageId="2" pageNumber="129">Annual herbs</emphasis>
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.
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<emphasis italics="true" pageId="2" pageNumber="129">Stems</emphasis>
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slender, glabrous, basal branches 6-26, completely decumbent, 3-15 cm long, leafless, dark brown, producing numerous fibrous roots at each node; 3-12 additional flowering shoots branched from the upper nodes of each basal branch, 6-65 cm high, prostrate to erect, green to purplish-red, nodes inflated, purple.
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<emphasis italics="true" pageId="2" pageNumber="129">Leaves</emphasis>
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nearly sessile; leaf blades narrowly lanceolate to linear-lanceolate, 1.5-12.5 cm long, 0.3-1.3 cm wide, lateral veins 9-16 pairs, both surfaces glabrous,
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<pageBreakToken pageId="3" pageNumber="130" start="start">base</pageBreakToken>
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round, apex acuminate, margin entire, shortly ciliate.
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<emphasis italics="true" pageId="3" pageNumber="130">Ocrea</emphasis>
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tubular, 4.5-11.5 mm long, membranous, sparsely appressed pubescent, apex truncate, fimbriate, cilia 2.2-5.3 mm long.
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<emphasis italics="true" pageId="3" pageNumber="130">Inflorescence</emphasis>
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terminal, erect, spicate, dense, 0.5-3.8 cm long; peduncle 3.5-6.5 cm long, glabrous; bracts purplish-red, funnel-shaped, sparsely pubescent, margin submembranous, shortly ciliate, each bract contains 4-7-flowers.
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<emphasis italics="true" pageId="3" pageNumber="130">Pedicel</emphasis>
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longer than bracts, 1.5-2.5 mm.
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<emphasis italics="true" pageId="3" pageNumber="130">Flowers</emphasis>
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dimorphic; perianth 5-parted, pinkish-white;
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<pageBreakToken pageId="4" pageNumber="131" start="start">long-styled</pageBreakToken>
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flowers (called as L-morph) 3.9-4.4 mm long, stamens 8, 2.6-3.2 mm, styles 3, connate to below middle, 4.3-5.1 mm, exserted; short-styled flowers (called as S-morph) 3.7-4.2 mm long, stamens 8, 3.8-4.9 mm, exserted, styles 3, connate to below middle, 2.4-2.9 mm; stigmas capitate; nectaries 8, arranged at the base of ovary.
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<emphasis italics="true" pageId="4" pageNumber="131">Achenes</emphasis>
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included in persistent perianth, dimorphic; L-morph dark brown, ellipsoid, trigonous, base rounded to broadly cuneate, apex acuminate, surface opaque, densely reticular - pitted, 3.6-4.2 mm long, 2.1-2.3 mm wide; S-morph black, ovoid, trigonous, base broadly cuneate, apex acute, surface opaque, densely pitted, 2.9-3.3 mm long, 1.8-2.1 mm wide.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="4" pageNumber="131" type="phenology">
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<paragraph pageId="4" pageNumber="131">Phenology.</paragraph>
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<paragraph pageId="4" pageNumber="131">Flowering was observed from July to December and fruiting from late July to January.</paragraph>
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</subSubSection>
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<subSubSection pageId="4" pageNumber="131" type="distribution">
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<paragraph pageId="4" pageNumber="131">Distribution and habitat.</paragraph>
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<paragraph pageId="4" pageNumber="131">
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<taxonomicName genus="Persicaira" lsidName="Persicaira rotunda" pageId="4" pageNumber="131" rank="species" species="rotunda">
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<emphasis italics="true" pageId="4" pageNumber="131">Persicaira rotunda</emphasis>
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</taxonomicName>
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is currently known only from several wetlands in north of Jiangxi Province and southwest of Anhui Province, eastern China and mainly grows in marshy and grassy areas around Daguan Lake, Lihu Lake, Longgan Lake, Poyang Lake Qingcao Lake, Shengjin Lake, Shimeng Lake and Wuchang Lake, which are several small to large lakes located near the Yangtze River. It usually occurs as one of the dominant species of some lakeshore plant communities (Fig.
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<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Persicaria rotunda (Z. Z. Zhou & Q. Y. Sun) Bo Li A plant community with P. rotunda B close-up view of an individual in situ C an individual showing branches D leaves E leaf base F ocrea G inflorescences. Scale bars: 1 cm (E, F, G)." figureDoi="10.3897/phytokeys.126.35442.figure1" httpUri="https://binary.pensoft.net/fig/317897" pageId="4" pageNumber="131">1A</figureCitation>
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).
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</paragraph>
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<caption ID-Zenodo-Dep="3348577" doi="10.3897/phytokeys.126.35442.figure1" httpUri="https://binary.pensoft.net/fig/317897" pageId="4" pageNumber="131" start="Figure 1" startId="F1">
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<paragraph pageId="4" pageNumber="131">
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<emphasis bold="true" pageId="4" pageNumber="131">Figure 1.</emphasis>
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<taxonomicName authorityName="Guo & Chen & Chen & Li" authorityYear="2019" baseAuthorityName="Guo & Chen & Chen & Li" baseAuthorityYear="2019" class="Magnoliopsida" family="Polygonaceae" genus="Persicaria" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Persicaria rotunda" order="Caryophyllales" pageId="4" pageNumber="131" phylum="Tracheophyta" rank="species" species="rotunda">
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<emphasis italics="true" pageId="4" pageNumber="131">Persicaria rotunda</emphasis>
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</taxonomicName>
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(Z.Z.Zhou & Q.Y.Sun) Bo Li
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<emphasis bold="true" pageId="4" pageNumber="131">A</emphasis>
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plant community with
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<taxonomicName lsidName="P. rotunda" pageId="4" pageNumber="131" rank="species" species="rotunda">
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<emphasis italics="true" pageId="4" pageNumber="131">P. rotunda</emphasis>
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</taxonomicName>
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<emphasis bold="true" pageId="4" pageNumber="131">B</emphasis>
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close-up view of an individual in situ
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<emphasis bold="true" pageId="4" pageNumber="131">C</emphasis>
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an individual showing branches
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<emphasis bold="true" pageId="4" pageNumber="131">D</emphasis>
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leaves
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<emphasis bold="true" pageId="4" pageNumber="131">E</emphasis>
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leaf base
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<emphasis bold="true" pageId="4" pageNumber="131">F</emphasis>
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ocrea
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<emphasis bold="true" pageId="4" pageNumber="131">G</emphasis>
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inflorescences. Scale bars: 1 cm (
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<emphasis bold="true" pageId="4" pageNumber="131">E, F, G</emphasis>
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).
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</paragraph>
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</caption>
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<caption ID-Zenodo-Dep="3348579" doi="10.3897/phytokeys.126.35442.figure2" httpUri="https://binary.pensoft.net/fig/317898" pageId="4" pageNumber="131" start="Figure 2" startId="F2">
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<paragraph pageId="4" pageNumber="131">
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<emphasis bold="true" pageId="4" pageNumber="131">Figure 2.</emphasis>
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Line drawing of
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<taxonomicName authorityName="Guo & Chen & Chen & Li" authorityYear="2019" baseAuthorityName="Guo & Chen & Chen & Li" baseAuthorityYear="2019" class="Magnoliopsida" family="Polygonaceae" genus="Persicaria" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Persicaria rotunda" order="Caryophyllales" pageId="4" pageNumber="131" phylum="Tracheophyta" rank="species" species="rotunda">
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<emphasis italics="true" pageId="4" pageNumber="131">Persicaria rotunda</emphasis>
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</taxonomicName>
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(Z.Z.Zhou & Q.Y.Sun) Bo Li
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<emphasis bold="true" pageId="4" pageNumber="131">A</emphasis>
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branches and inflorescences
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<emphasis bold="true" pageId="4" pageNumber="131">B</emphasis>
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ocrea and leaf
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<emphasis bold="true" pageId="4" pageNumber="131">C</emphasis>
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inflorescence
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<emphasis bold="true" pageId="4" pageNumber="131">D</emphasis>
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S-morph flower and its pistil
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<emphasis bold="true" pageId="4" pageNumber="131">E</emphasis>
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L-morph flower and its pistil
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<emphasis bold="true" pageId="4" pageNumber="131">F</emphasis>
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S-morph achene
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<emphasis bold="true" pageId="4" pageNumber="131">G</emphasis>
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L-morph achene.
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</paragraph>
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</caption>
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</subSubSection>
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<subSubSection pageId="4" pageNumber="131" type="specimen examined">
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<paragraph pageId="4" pageNumber="131">Specimen examined.</paragraph>
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<paragraph pageId="4" pageNumber="131">
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CHINA. Jiangxi Province, Xingzi County, Shenling Lake, on grassy lakeside, Alt. 10 m,
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<geoCoordinate degrees="29.270044" direction="north" orientation="latitude" precision="1" value="29.270044">29.270044N</geoCoordinate>
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,
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<geoCoordinate degrees="116.040173" direction="east" orientation="longitude" precision="1" value="116.04018">116.040173E</geoCoordinate>
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, 16 July 2008,
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<emphasis italics="true" pageId="4" pageNumber="131">B.Li JX046</emphasis>
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(IBSC); Jiangxi Province, Yongxiu County, Wucheng Town, Poyang Lake, in wet meadow, Alt. 14 m,
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<geoCoordinate degrees="29.114364" direction="north" orientation="latitude" precision="1" value="29.114365">29.114364N</geoCoordinate>
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,
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<geoCoordinate degrees="116.032021" direction="east" orientation="longitude" precision="1" value="116.03202">116.032021E</geoCoordinate>
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, 11 December 2017,
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<emphasis italics="true" pageId="4" pageNumber="131">B.Li LB0778</emphasis>
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(JXAU); Jiangxi Province, Yongxiu County, Wucheng Town, Poyang Lake, in wetland marsh, Alt. 6 m,
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<geoCoordinate degrees="29.133935" direction="north" orientation="latitude" precision="1" value="29.133936">29.133935N</geoCoordinate>
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,
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<geoCoordinate degrees="116.053571" direction="east" orientation="longitude" precision="1" value="116.05357">116.053571E</geoCoordinate>
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, 15 October 2018,
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<emphasis italics="true" pageId="4" pageNumber="131">B.Li LB0901</emphasis>
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(JXAU).
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</paragraph>
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</subSubSection>
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<subSubSection lastPageId="7" lastPageNumber="134" pageId="4" pageNumber="131" type="notes">
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<paragraph pageId="4" pageNumber="131">Notes.</paragraph>
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<paragraph pageId="4" pageNumber="131">
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As noted by
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<bibRefCitation DOI="https://doi.org/10.1360/aps06205" author="Zhou, ZZ" journalOrPublisher="Zhiwu Fenlei Xuebao" pageId="9" pageNumber="136" pagination="713 - 718" refId="B17" refString="Zhou, ZZ, Sun, Q, Xu, W, Shen, J, Xu, L, Zhao, X, 2007. Polygonum jucundum var. rotundum Z.Z. Zhou & Q.Y. Sun, a new variety of Polygonaceae from Anhui, China. Zhiwu Fenlei Xuebao 45 (05): 713 - 718, DOI: https://doi.org/10.1360/aps06205" title="Polygonum jucundum var. rotundum Z. Z. Zhou & Q. Y. Sun, a new variety of Polygonaceae from Anhui, China." url="https://doi.org/10.1360/aps06205" volume="45" year="2007">Zhou et al. (2007)</bibRefCitation>
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,
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<taxonomicName lsidName="P. rotunda" pageId="4" pageNumber="131" rank="species" species="rotunda">
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<emphasis italics="true" pageId="4" pageNumber="131">P. rotunda</emphasis>
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</taxonomicName>
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is most similar to
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<taxonomicName lsidName="P. jucunda" pageId="4" pageNumber="131" rank="species" species="jucunda">
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<emphasis italics="true" pageId="4" pageNumber="131">P. jucunda</emphasis>
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</taxonomicName>
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(Fig.
|
||
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Persicaria jucunda (Meisn.) Migo A habit B leaves C S-morph inflorescences D L-morph inflorescences. Scale bars: 1 cm (C, D)." figureDoi="10.3897/phytokeys.126.35442.figure3" httpUri="https://binary.pensoft.net/fig/317899" pageId="4" pageNumber="131">3</figureCitation>
|
||
) in gross morphology, particularly in having uninterrupted spicate inflorescences with dense flowers and slender pedicels longer than bracts. However, the authors did not notice that both of the species are distylous, which is another important similarity between the two taxa. The distyly of
|
||
<taxonomicName lsidName="P. jucunda" pageId="4" pageNumber="131" rank="species" species="jucunda">
|
||
<emphasis italics="true" pageId="4" pageNumber="131">P. jucunda</emphasis>
|
||
</taxonomicName>
|
||
was firstly observed and confirmed by
|
||
<bibRefCitation DOI="https://doi.org/10.1007/s00606-010-0318-x" author="Chen, ML" journalOrPublisher="Plant Systematics and Evolution" pageId="8" pageNumber="135" pagination="139 - 148" refId="B3" refString="Chen, ML, Zhang, XP, 2010. Distyly in Polygonum jucundum Meisn. (Polygonaceae). Plant Systematics and Evolution 288 (3-4): 139 - 148, DOI: https://doi.org/10.1007/s00606-010-0318-x" title="Distyly in Polygonum jucundum Meisn. (Polygonaceae)." url="https://doi.org/10.1007/s00606-010-0318-x" volume="288" year="2010">Chen and Zhang (2010)</bibRefCitation>
|
||
. In the present study, we confirmed that
|
||
<taxonomicName lsidName="P. rotunda" pageId="4" pageNumber="131" rank="species" species="rotunda">
|
||
<emphasis italics="true" pageId="4" pageNumber="131">P. rotunda</emphasis>
|
||
</taxonomicName>
|
||
is also a typical distylous species. The heights of the stigmas (4.63
|
||
<normalizedToken originalValue="±">+/-</normalizedToken>
|
||
0.191 mm vs. 2.61
|
||
<normalizedToken originalValue="±">+/-</normalizedToken>
|
||
0.056 mm, L-morph vs. S-morph) and anthers (2.74
|
||
<normalizedToken originalValue="±">+/-</normalizedToken>
|
||
0.092 mm vs. 4.68
|
||
<normalizedToken originalValue="±">+/-</normalizedToken>
|
||
0.178 mm, L-morph vs. S-morph) are reciprocal in the two morphs. However,
|
||
<taxonomicName lsidName="P. rotunda" pageId="4" pageNumber="131" rank="species" species="rotunda">
|
||
<emphasis italics="true" pageId="4" pageNumber="131">P. rotunda</emphasis>
|
||
</taxonomicName>
|
||
is clearly different from
|
||
<taxonomicName lsidName="P. jucunda" pageId="4" pageNumber="131" rank="species" species="jucunda">
|
||
<emphasis italics="true" pageId="4" pageNumber="131">P. jucunda</emphasis>
|
||
</taxonomicName>
|
||
, not only in some morphological traits (Fig.
|
||
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Box plots of four quantitative characters, leaf length (A) leaf width (B) number of leaf lateral vein pairs (C) and inflorescence length (D) of Persicaria rotunda and P. jucunda. The boxes (rectangle region) represent the interquartile range and the whiskers (vertical line) represent the range excluding the outliers (circles). The three upper, middle and lower lines on the boxes represent the 75 %, 50 % and 25 % of the variables, respectively. The upper and lower ends of the whiskers represent the maximum and minimum values of the variable, respectively. The circles represent the single value, where the variable value exceeds 1.5 times the difference between the 75 % and 25 %." figureDoi="10.3897/phytokeys.126.35442.figure4" httpUri="https://binary.pensoft.net/fig/317900" pageId="4" pageNumber="131">4</figureCitation>
|
||
), but also in several micro-morphological characters (Table
|
||
<tableCitation captionStart="Table 1" captionStartId="T1" captionText="Table 1. Differences between Persicaria rotunda and P. jucunda." httpUri="http://table.plazi.org/id/415CA65BDBD8DE55553FAFBF52624A90" pageId="4" pageNumber="131" tableUuid="415CA65BDBD8DE55553FAFBF52624A90">1</tableCitation>
|
||
).
|
||
</paragraph>
|
||
<caption ID-Zenodo-Dep="3348581" doi="10.3897/phytokeys.126.35442.figure3" httpUri="https://binary.pensoft.net/fig/317899" pageId="4" pageNumber="131" start="Figure 3" startId="F3">
|
||
<paragraph pageId="4" pageNumber="131">
|
||
<emphasis bold="true" pageId="4" pageNumber="131">Figure 3.</emphasis>
|
||
<taxonomicName class="Magnoliopsida" family="Polygonaceae" genus="Persicaria" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Persicaria jucunda" order="Caryophyllales" pageId="4" pageNumber="131" phylum="Tracheophyta" rank="species" species="jucunda">
|
||
<emphasis italics="true" pageId="4" pageNumber="131">Persicaria jucunda</emphasis>
|
||
</taxonomicName>
|
||
(Meisn.) Migo
|
||
<emphasis bold="true" pageId="4" pageNumber="131">A</emphasis>
|
||
habit
|
||
<emphasis bold="true" pageId="4" pageNumber="131">B</emphasis>
|
||
leaves
|
||
<emphasis bold="true" pageId="4" pageNumber="131">C</emphasis>
|
||
S-morph inflorescences
|
||
<emphasis bold="true" pageId="4" pageNumber="131">D</emphasis>
|
||
L-morph inflorescences. Scale bars: 1 cm (
|
||
<emphasis bold="true" pageId="4" pageNumber="131">C, D</emphasis>
|
||
).
|
||
</paragraph>
|
||
</caption>
|
||
<caption ID-Zenodo-Dep="3348583" doi="10.3897/phytokeys.126.35442.figure4" httpUri="https://binary.pensoft.net/fig/317900" pageId="4" pageNumber="131" start="Figure 4" startId="F4">
|
||
<paragraph pageId="4" pageNumber="131">
|
||
<emphasis bold="true" pageId="4" pageNumber="131">Figure 4.</emphasis>
|
||
Box plots of four quantitative characters, leaf length (
|
||
<emphasis bold="true" pageId="4" pageNumber="131">A</emphasis>
|
||
) leaf width (
|
||
<emphasis bold="true" pageId="4" pageNumber="131">B</emphasis>
|
||
) number of leaf lateral vein pairs (
|
||
<emphasis bold="true" pageId="4" pageNumber="131">C</emphasis>
|
||
) and inflorescence length (
|
||
<emphasis bold="true" pageId="4" pageNumber="131">D</emphasis>
|
||
) of
|
||
<taxonomicName authorityName="Guo & Chen & Chen & Li" authorityYear="2019" baseAuthorityName="Guo & Chen & Chen & Li" baseAuthorityYear="2019" class="Magnoliopsida" family="Polygonaceae" genus="Persicaria" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Persicaria rotunda" order="Caryophyllales" pageId="4" pageNumber="131" phylum="Tracheophyta" rank="species" species="rotunda">
|
||
<emphasis italics="true" pageId="4" pageNumber="131">Persicaria rotunda</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName lsidName="P. jucunda" pageId="4" pageNumber="131" rank="species" species="jucunda">
|
||
<emphasis italics="true" pageId="4" pageNumber="131">P. jucunda</emphasis>
|
||
</taxonomicName>
|
||
. The boxes (rectangle region) represent the interquartile range and the whiskers (vertical line) represent the range excluding the outliers (circles). The three upper, middle and lower lines on the boxes represent the 75%, 50% and 25% of the variables, respectively. The upper and lower ends of the whiskers represent the maximum and minimum values of the variable, respectively. The circles represent the single value, where the variable value exceeds 1.5 times the difference between the 75% and 25%.
|
||
</paragraph>
|
||
</caption>
|
||
<caption ID-Table-UUID="415CA65BDBD8DE55553FAFBF52624A90" httpUri="http://table.plazi.org/id/415CA65BDBD8DE55553FAFBF52624A90" pageId="4" pageNumber="131" start="Table 1" startId="T1">
|
||
<paragraph pageId="4" pageNumber="131">
|
||
<emphasis bold="true" pageId="4" pageNumber="131">Table 1.</emphasis>
|
||
Differences between
|
||
<taxonomicName authorityName="Guo & Chen & Chen & Li" authorityYear="2019" baseAuthorityName="Guo & Chen & Chen & Li" baseAuthorityYear="2019" class="Magnoliopsida" family="Polygonaceae" genus="Persicaria" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Persicaria rotunda" order="Caryophyllales" pageId="4" pageNumber="131" phylum="Tracheophyta" rank="species" species="rotunda">
|
||
<emphasis italics="true" pageId="4" pageNumber="131">Persicaria rotunda</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName lsidName="P. jucunda" pageId="4" pageNumber="131" rank="species" species="jucunda">
|
||
<emphasis italics="true" pageId="4" pageNumber="131">P. jucunda</emphasis>
|
||
</taxonomicName>
|
||
.
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph pageId="4" pageNumber="131">
|
||
<table pageId="4" pageNumber="131">
|
||
<tr pageId="4" pageNumber="131">
|
||
<td colspan="2" isEmpty="true" pageId="4" pageNumber="131" rowspan="1">-</td>
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">
|
||
<taxonomicName authorityName="Guo & Chen & Chen & Li" authorityYear="2019" baseAuthorityName="Guo & Chen & Chen & Li" baseAuthorityYear="2019" class="Magnoliopsida" family="Polygonaceae" genus="Persicaria" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Persicaria rotunda" order="Caryophyllales" pageId="4" pageNumber="131" phylum="Tracheophyta" rank="species" species="rotunda">
|
||
<emphasis bold="true" italics="true" pageId="4" pageNumber="131">Persicaria rotunda</emphasis>
|
||
</taxonomicName>
|
||
</td>
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">
|
||
<taxonomicName lsidName="P. jucunda" pageId="4" pageNumber="131" rank="species" species="jucunda">
|
||
<emphasis bold="true" italics="true" pageId="4" pageNumber="131">P. jucunda</emphasis>
|
||
</taxonomicName>
|
||
</td>
|
||
</tr>
|
||
<tr pageId="4" pageNumber="131">
|
||
<td colspan="2" pageId="4" pageNumber="131" rowspan="1">
|
||
<emphasis bold="true" pageId="4" pageNumber="131">Habitat</emphasis>
|
||
</td>
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">wetlands</td>
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">forest margins, grassy slopes or moist valleys</td>
|
||
</tr>
|
||
<tr pageId="4" pageNumber="131">
|
||
<td colspan="2" pageId="4" pageNumber="131" rowspan="1">
|
||
<emphasis bold="true" pageId="4" pageNumber="131">Branches</emphasis>
|
||
</td>
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">the primary branches completely decumbent, leafless and the secondary branches prostrate to erect</td>
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">ascending to erect, without leafless branches</td>
|
||
</tr>
|
||
<tr pageId="4" pageNumber="131">
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="5">
|
||
<emphasis bold="true" pageId="4" pageNumber="131">Leaves</emphasis>
|
||
</td>
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">Petiole</td>
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">nearly absent</td>
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">3-6 mm long</td>
|
||
</tr>
|
||
<tr pageId="4" pageNumber="131">
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">Shape</td>
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">narrowly lanceolate to linear-lanceolate</td>
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">lanceolate or elliptic-lanceolate</td>
|
||
</tr>
|
||
<tr pageId="4" pageNumber="131">
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">Lateral veins (pairs)</td>
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">9-16</td>
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">6-10</td>
|
||
</tr>
|
||
<tr pageId="4" pageNumber="131">
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">Adaxial epidermis</td>
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">polygonal epidermal cells with straight anticlinal walls no stomata no glands</td>
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">irregular epidermal cells with straight to curved anticlinal walls stomata mostly anisocytic or occasionally paracytic sparse two-celled peltate glands</td>
|
||
</tr>
|
||
<tr pageId="4" pageNumber="131">
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">Abaxial epidermis</td>
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">irregular epidermal cells with curved to sinuolate anticlinal walls stomata anisocytic plenty of four-celled peltate and spheroidal glands</td>
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">irregular epidermal cells with sinuolate to sinuate anticlinal walls stomata paracytic no glands</td>
|
||
</tr>
|
||
<tr pageId="4" pageNumber="131">
|
||
<td colspan="2" pageId="4" pageNumber="131" rowspan="1">
|
||
<emphasis bold="true" pageId="4" pageNumber="131">Length of Inflorescences (cm)</emphasis>
|
||
</td>
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">0.5-3.8</td>
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">1.0-8.2</td>
|
||
</tr>
|
||
<tr pageId="4" pageNumber="131">
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="2">
|
||
<emphasis bold="true" pageId="4" pageNumber="131">Tepals</emphasis>
|
||
</td>
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">Length (mm)</td>
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">L-morph 3.9-4.4, S-morph 3.7-4.2</td>
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">L-morph 2.8-3.3, S-morph: 2.7-3.2</td>
|
||
</tr>
|
||
<tr pageId="4" pageNumber="131">
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">Epidermis</td>
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">anticlinal walls of epidermal cells curved to sinuolate 10-14 sinuate striates on cuticular layer</td>
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">anticlinal walls of epidermal cells sinuolate to sinuate 12-18 straight to sinuolate striates on cuticular layer</td>
|
||
</tr>
|
||
<tr pageId="4" pageNumber="131">
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="3">
|
||
<emphasis bold="true" pageId="4" pageNumber="131">Achenes</emphasis>
|
||
</td>
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">
|
||
Size (length
|
||
<normalizedToken originalValue="×">x</normalizedToken>
|
||
width, mm)
|
||
</td>
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">
|
||
L-morph 3.6-4.2
|
||
<normalizedToken originalValue="×">x</normalizedToken>
|
||
2.1-2.3, S-morph 2.9-3.3
|
||
<normalizedToken originalValue="×">x</normalizedToken>
|
||
1.8-2.1
|
||
</td>
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">
|
||
L-morph 2.1-2.6
|
||
<normalizedToken originalValue="×">x</normalizedToken>
|
||
1.6-1.8, S-morph 2.2-2.7
|
||
<normalizedToken originalValue="×">x</normalizedToken>
|
||
1.7-1.9
|
||
</td>
|
||
</tr>
|
||
<tr pageId="4" pageNumber="131">
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">Surface</td>
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">opaque, densely pitted</td>
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">shiny, smooth</td>
|
||
</tr>
|
||
<tr pageId="4" pageNumber="131">
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">Epidermal ornamentations</td>
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">reticulate</td>
|
||
<td colspan="1" pageId="4" pageNumber="131" rowspan="1">Indistinctly reticulate</td>
|
||
</tr>
|
||
</table>
|
||
</paragraph>
|
||
<paragraph pageId="4" pageNumber="131">
|
||
Besides the differences summarised by
|
||
<bibRefCitation DOI="https://doi.org/10.1360/aps06205" author="Zhou, ZZ" journalOrPublisher="Zhiwu Fenlei Xuebao" pageId="9" pageNumber="136" pagination="713 - 718" refId="B17" refString="Zhou, ZZ, Sun, Q, Xu, W, Shen, J, Xu, L, Zhao, X, 2007. Polygonum jucundum var. rotundum Z.Z. Zhou & Q.Y. Sun, a new variety of Polygonaceae from Anhui, China. Zhiwu Fenlei Xuebao 45 (05): 713 - 718, DOI: https://doi.org/10.1360/aps06205" title="Polygonum jucundum var. rotundum Z. Z. Zhou & Q. Y. Sun, a new variety of Polygonaceae from Anhui, China." url="https://doi.org/10.1360/aps06205" volume="45" year="2007">Zhou et al. (2007)</bibRefCitation>
|
||
, such as leaf shape, leaf width, petiole length and stem diameter, we observed several additional morphological traits that are clearly distinct between
|
||
<taxonomicName lsidName="P. rotunda" pageId="4" pageNumber="131" rank="species" species="rotunda">
|
||
<emphasis italics="true" pageId="4" pageNumber="131">P. rotunda</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName lsidName="P. jucunda" pageId="4" pageNumber="131" rank="species" species="jucunda">
|
||
<emphasis italics="true" pageId="4" pageNumber="131">P. jucunda</emphasis>
|
||
</taxonomicName>
|
||
. The stems of
|
||
<taxonomicName lsidName="P. rotunda" pageId="4" pageNumber="131" rank="species" species="rotunda">
|
||
<emphasis italics="true" pageId="4" pageNumber="131">P. rotunda</emphasis>
|
||
</taxonomicName>
|
||
have 6-26 basal branches which are leafless and completely decumbent with numerous fibrous roots at each node. On the upper nodes of each basal branch, there are 3-12 flowering shoots which are prostrate to erect and normally bearing leaves and inflorescences (Fig.
|
||
<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Persicaria rotunda (Z. Z. Zhou & Q. Y. Sun) Bo Li A plant community with P. rotunda B close-up view of an individual in situ C an individual showing branches D leaves E leaf base F ocrea G inflorescences. Scale bars: 1 cm (E, F, G)." figureDoi="10.3897/phytokeys.126.35442.figure1" httpUri="https://binary.pensoft.net/fig/317897" pageId="4" pageNumber="131">1C</figureCitation>
|
||
). However, the stems of
|
||
<taxonomicName lsidName="P. jucunda" pageId="4" pageNumber="131" rank="species" species="jucunda">
|
||
<emphasis italics="true" pageId="4" pageNumber="131">P. jucunda</emphasis>
|
||
</taxonomicName>
|
||
are mostly erect or only prostrate at the base and the number of its branches are much fewer than those of
|
||
<taxonomicName lsidName="P. rotunda" pageId="4" pageNumber="131" rank="species" species="rotunda">
|
||
<emphasis italics="true" pageId="4" pageNumber="131">P. rotunda</emphasis>
|
||
</taxonomicName>
|
||
.
|
||
<taxonomicName authorityName="Guo & Chen & Chen & Li" authorityYear="2019" baseAuthorityName="Guo & Chen & Chen & Li" baseAuthorityYear="2019" class="Magnoliopsida" family="Polygonaceae" genus="Persicaria" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Persicaria rotunda" order="Caryophyllales" pageId="4" pageNumber="131" phylum="Tracheophyta" rank="species" species="rotunda">
|
||
<emphasis italics="true" pageId="4" pageNumber="131">Persicaria rotunda</emphasis>
|
||
</taxonomicName>
|
||
also has more pairs of leaf lateral veins and much shorter inflorescences than
|
||
<taxonomicName lsidName="P. jucunda" pageId="4" pageNumber="131" rank="species" species="jucunda">
|
||
<emphasis italics="true" pageId="4" pageNumber="131">P. jucunda</emphasis>
|
||
</taxonomicName>
|
||
(Fig.
|
||
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Box plots of four quantitative characters, leaf length (A) leaf width (B) number of leaf lateral vein pairs (C) and inflorescence length (D) of Persicaria rotunda and P. jucunda. The boxes (rectangle region) represent the interquartile range and the whiskers (vertical line) represent the range excluding the outliers (circles). The three upper, middle and lower lines on the boxes represent the 75 %, 50 % and 25 % of the variables, respectively. The upper and lower ends of the whiskers represent the maximum and minimum values of the variable, respectively. The circles represent the single value, where the variable value exceeds 1.5 times the difference between the 75 % and 25 %." figureDoi="10.3897/phytokeys.126.35442.figure4" httpUri="https://binary.pensoft.net/fig/317900" pageId="4" pageNumber="131">4</figureCitation>
|
||
).
|
||
</paragraph>
|
||
<paragraph pageId="5" pageNumber="132">
|
||
<pageBreakToken pageId="5" pageNumber="132" start="start">Though</pageBreakToken>
|
||
both of
|
||
<taxonomicName lsidName="P. rotunda" pageId="5" pageNumber="132" rank="species" species="rotunda">
|
||
<emphasis italics="true" pageId="5" pageNumber="132">P. rotunda</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName lsidName="P. jucunda" pageId="5" pageNumber="132" rank="species" species="jucunda">
|
||
<emphasis italics="true" pageId="5" pageNumber="132">P. jucunda</emphasis>
|
||
</taxonomicName>
|
||
have dimorphic flowers, the achenes of
|
||
<taxonomicName lsidName="P. rotunda" pageId="5" pageNumber="132" rank="species" species="rotunda">
|
||
<emphasis italics="true" pageId="5" pageNumber="132">P. rotunda</emphasis>
|
||
</taxonomicName>
|
||
are also dimorphic, with the L-morph ellipsoid in shape and dark brown in colour, whereas the S-morph achene is ovoid in shape and black in colour (Fig.
|
||
<figureCitation captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Achene morphology of Persicaria rotunda A dimorphic achenes under a stereoscope B-C SEM micrograph of L-morph achene B whole view C partial view showing its epidermis sculpture D-E SEM micrograph of S-morph achene D whole view E partial view showing its epidermis sculpture. Scale bars: 500 μm (B, D); 50 μm (C, E)." figureDoi="10.3897/phytokeys.126.35442.figure5" httpUri="https://binary.pensoft.net/fig/317901" pageId="5" pageNumber="132">5A</figureCitation>
|
||
). Additionally, the L-morph achenes of
|
||
<taxonomicName lsidName="P. rotunda" pageId="5" pageNumber="132" rank="species" species="rotunda">
|
||
<emphasis italics="true" pageId="5" pageNumber="132">P. rotunda</emphasis>
|
||
</taxonomicName>
|
||
have larger size and more raised reticulate epidermal ornamentations than those of the S-morph (Figs
|
||
<figureCitation captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Achene morphology of Persicaria rotunda A dimorphic achenes under a stereoscope B-C SEM micrograph of L-morph achene B whole view C partial view showing its epidermis sculpture D-E SEM micrograph of S-morph achene D whole view E partial view showing its epidermis sculpture. Scale bars: 500 μm (B, D); 50 μm (C, E)." figureDoi="10.3897/phytokeys.126.35442.figure5" httpUri="https://binary.pensoft.net/fig/317901" pageId="5" pageNumber="132">5B-E</figureCitation>
|
||
). In contrast, the achenes of
|
||
<taxonomicName lsidName="P. jucunda" pageId="5" pageNumber="132" rank="species" species="jucunda">
|
||
<emphasis italics="true" pageId="5" pageNumber="132">P. jucunda</emphasis>
|
||
</taxonomicName>
|
||
are homomorphic with the same smooth surfaces in both morphs (
|
||
<bibRefCitation DOI="https://doi.org/10.1007/s00606-010-0318-x" author="Chen, ML" journalOrPublisher="Plant Systematics and Evolution" pageId="8" pageNumber="135" pagination="139 - 148" refId="B3" refString="Chen, ML, Zhang, XP, 2010. Distyly in Polygonum jucundum Meisn. (Polygonaceae). Plant Systematics and Evolution 288 (3-4): 139 - 148, DOI: https://doi.org/10.1007/s00606-010-0318-x" title="Distyly in Polygonum jucundum Meisn. (Polygonaceae)." url="https://doi.org/10.1007/s00606-010-0318-x" volume="288" year="2010">Chen and Zhang 2010</bibRefCitation>
|
||
). Amongst the distylous taxa reported in
|
||
<taxonomicName class="Magnoliopsida" family="Polygonaceae" genus="Persicaria" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Persicaria" order="Caryophyllales" pageId="5" pageNumber="132" phylum="Tracheophyta" rank="genus">
|
||
<emphasis italics="true" pageId="5" pageNumber="132">Persicaria</emphasis>
|
||
</taxonomicName>
|
||
,
|
||
<taxonomicName lsidName="P. rotunda" pageId="5" pageNumber="132" rank="species" species="rotunda">
|
||
<emphasis italics="true" pageId="5" pageNumber="132">P. rotunda</emphasis>
|
||
</taxonomicName>
|
||
is, so far, the only species that shows dimorphic features on achenes.
|
||
</paragraph>
|
||
<caption ID-Zenodo-Dep="3348585" doi="10.3897/phytokeys.126.35442.figure5" httpUri="https://binary.pensoft.net/fig/317901" pageId="5" pageNumber="132" start="Figure 5" startId="F5">
|
||
<paragraph pageId="5" pageNumber="132">
|
||
<emphasis bold="true" pageId="5" pageNumber="132">Figure 5.</emphasis>
|
||
Achene morphology of
|
||
<taxonomicName authorityName="Guo & Chen & Chen & Li" authorityYear="2019" baseAuthorityName="Guo & Chen & Chen & Li" baseAuthorityYear="2019" class="Magnoliopsida" family="Polygonaceae" genus="Persicaria" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Persicaria rotunda" order="Caryophyllales" pageId="5" pageNumber="132" phylum="Tracheophyta" rank="species" species="rotunda">
|
||
<emphasis italics="true" pageId="5" pageNumber="132">Persicaria rotunda</emphasis>
|
||
</taxonomicName>
|
||
<emphasis bold="true" pageId="5" pageNumber="132">A</emphasis>
|
||
dimorphic achenes under a stereoscope
|
||
<emphasis bold="true" pageId="5" pageNumber="132">B-C</emphasis>
|
||
SEM micrograph of L-morph achene
|
||
<emphasis bold="true" pageId="5" pageNumber="132">B</emphasis>
|
||
whole view
|
||
<emphasis bold="true" pageId="5" pageNumber="132">C</emphasis>
|
||
partial view showing its epidermis sculpture
|
||
<emphasis bold="true" pageId="5" pageNumber="132">D-E</emphasis>
|
||
SEM micrograph of S-morph achene
|
||
<emphasis bold="true" pageId="5" pageNumber="132">D</emphasis>
|
||
whole view
|
||
<emphasis bold="true" pageId="5" pageNumber="132">E</emphasis>
|
||
partial view showing its epidermis sculpture. Scale bars: 500
|
||
<normalizedToken originalValue="μm">μm</normalizedToken>
|
||
(
|
||
<emphasis bold="true" pageId="5" pageNumber="132">B, D</emphasis>
|
||
); 50
|
||
<normalizedToken originalValue="μm">μm</normalizedToken>
|
||
(
|
||
<emphasis bold="true" pageId="5" pageNumber="132">C, E</emphasis>
|
||
).
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph lastPageId="7" lastPageNumber="134" pageId="5" pageNumber="132">
|
||
Leaf epidermis characters have been tested to be of important taxonomic significance in
|
||
<taxonomicName class="Magnoliopsida" family="Polygonaceae" genus="Persicaria" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Persicaria" order="Caryophyllales" pageId="5" pageNumber="132" phylum="Tracheophyta" rank="genus">
|
||
<emphasis italics="true" pageId="5" pageNumber="132">Persicaria</emphasis>
|
||
</taxonomicName>
|
||
(
|
||
<bibRefCitation author="Hou, YT" journalOrPublisher="Shokubutsu Kenkyu Zasshi" pageId="8" pageNumber="135" refId="B7" refString="Hou, YT, 2006. Systematic studies on the tribe Polygoneae of China. Shandong Normal University, Jinan." title="Systematic studies on the tribe Polygoneae of China. Shandong Normal University, Jinan." year="2006">Hou 2006</bibRefCitation>
|
||
,
|
||
<bibRefCitation author="Zhu, LT" journalOrPublisher="Zhiwu Fenlei Xuebao" pageId="9" pageNumber="136" refId="B18" refString="Zhu, LT, Lu, FJ, Hou, YT, Li, FZ, 2007. Micro-morphology of leaf epidermis and its taxonomical significance of Polygonum section Cephalophilon. Journal of Wuhan Botanical Research 25: 136-142." title="Micro-morphology of leaf epidermis and its taxonomical significance of Polygonum section Cephalophilon. Journal of Wuhan Botanical Research 25: 136 - 142." year="2007">Zhu et al. 2007</bibRefCitation>
|
||
,
|
||
<bibRefCitation author="Yasmin, G" journalOrPublisher="African Journal of Biotechnology" pageId="9" pageNumber="136" pagination="3759 - 3768" refId="B16" refString="Yasmin, G, Khan, MA, Shaheen, N, Hayat, MQ, 2010. Taxonomic significance of leaf epidermal anatomy of selected Persicaria Mill. species of family Polygonaceae from Pakistan. African Journal of Biotechnology 9: 3759 - 3768" title="Taxonomic significance of leaf epidermal anatomy of selected Persicaria Mill. species of family Polygonaceae from Pakistan." volume="9" year="2010">Yasmin et al. 2010</bibRefCitation>
|
||
). When observing the leaf epidermis of
|
||
<taxonomicName lsidName="P. rotunda" pageId="5" pageNumber="132" rank="species" species="rotunda">
|
||
<emphasis italics="true" pageId="5" pageNumber="132">P. rotunda</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName lsidName="P. jucunda" pageId="5" pageNumber="132" rank="species" species="jucunda">
|
||
<emphasis italics="true" pageId="5" pageNumber="132">P. jucunda</emphasis>
|
||
</taxonomicName>
|
||
, we found that there are significant differences in the leaf epidermal micro-morphology of the two taxa (Fig.
|
||
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. LM micrographs of leaf epidermis of Persicaria rotunda (A, B) and P. jucunda (C, D). A, C upper epidermis B, D lower epidermis. Arrow in B shows the four-celled peltate and spheroidal glands of P. rotunda and in C indicates the two-celled peltate glands of P. jucunda. Scale bars: 500 μm." figureDoi="10.3897/phytokeys.126.35442.figure6" httpUri="https://binary.pensoft.net/fig/317902" pageId="5" pageNumber="132">6</figureCitation>
|
||
). In
|
||
<taxonomicName lsidName="P. rotunda" pageId="5" pageNumber="132" rank="species" species="rotunda">
|
||
<emphasis italics="true" pageId="5" pageNumber="132">P. rotunda</emphasis>
|
||
</taxonomicName>
|
||
, the adaxial leaf epidermal cells are polygonal in shape with the straight anticlinal walls and no stomatal apparatus or gland occurs on the surface (Fig.
|
||
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. LM micrographs of leaf epidermis of Persicaria rotunda (A, B) and P. jucunda (C, D). A, C upper epidermis B, D lower epidermis. Arrow in B shows the four-celled peltate and spheroidal glands of P. rotunda and in C indicates the two-celled peltate glands of P. jucunda. Scale bars: 500 μm." figureDoi="10.3897/phytokeys.126.35442.figure6" httpUri="https://binary.pensoft.net/fig/317902" pageId="5" pageNumber="132">6A</figureCitation>
|
||
). However, the adaxial leaf epidermis of
|
||
<taxonomicName lsidName="P. jucunda" pageId="5" pageNumber="132" rank="species" species="jucunda">
|
||
<emphasis italics="true" pageId="5" pageNumber="132">P. jucunda</emphasis>
|
||
</taxonomicName>
|
||
is covered by irregular epidermal
|
||
<pageBreakToken pageId="6" pageNumber="133" start="start">cells</pageBreakToken>
|
||
with the anticlinal walls straight to curved and has mostly anisocytic or occasionally paracytic stomata and sparsely two-celled peltate glands (Fig.
|
||
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. LM micrographs of leaf epidermis of Persicaria rotunda (A, B) and P. jucunda (C, D). A, C upper epidermis B, D lower epidermis. Arrow in B shows the four-celled peltate and spheroidal glands of P. rotunda and in C indicates the two-celled peltate glands of P. jucunda. Scale bars: 500 μm." figureDoi="10.3897/phytokeys.126.35442.figure6" httpUri="https://binary.pensoft.net/fig/317902" pageId="6" pageNumber="133">6C</figureCitation>
|
||
). On the abaxial leaf epidermis, plenty of four-celled peltate and spheroidal glands, anisocytic stomata and irregular epidermal cells with the anticlinal walls curved to sinuolate were observed for
|
||
<taxonomicName lsidName="P. rotunda" pageId="6" pageNumber="133" rank="species" species="rotunda">
|
||
<emphasis italics="true" pageId="6" pageNumber="133">P. rotunda</emphasis>
|
||
</taxonomicName>
|
||
(Fig.
|
||
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. LM micrographs of leaf epidermis of Persicaria rotunda (A, B) and P. jucunda (C, D). A, C upper epidermis B, D lower epidermis. Arrow in B shows the four-celled peltate and spheroidal glands of P. rotunda and in C indicates the two-celled peltate glands of P. jucunda. Scale bars: 500 μm." figureDoi="10.3897/phytokeys.126.35442.figure6" httpUri="https://binary.pensoft.net/fig/317902" pageId="6" pageNumber="133">6B</figureCitation>
|
||
), while in
|
||
<taxonomicName lsidName="P. jucunda" pageId="6" pageNumber="133" rank="species" species="jucunda">
|
||
<emphasis italics="true" pageId="6" pageNumber="133">P. jucunda</emphasis>
|
||
</taxonomicName>
|
||
, no glands have been
|
||
<pageBreakToken pageId="7" pageNumber="134" start="start">found</pageBreakToken>
|
||
, the stomata are paracytic and the anticlinal walls of epidermal cells are sinuolate to sinuate (Fig.
|
||
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. LM micrographs of leaf epidermis of Persicaria rotunda (A, B) and P. jucunda (C, D). A, C upper epidermis B, D lower epidermis. Arrow in B shows the four-celled peltate and spheroidal glands of P. rotunda and in C indicates the two-celled peltate glands of P. jucunda. Scale bars: 500 μm." figureDoi="10.3897/phytokeys.126.35442.figure6" httpUri="https://binary.pensoft.net/fig/317902" pageId="7" pageNumber="134">6D</figureCitation>
|
||
).
|
||
</paragraph>
|
||
<caption ID-Zenodo-Dep="3348587" doi="10.3897/phytokeys.126.35442.figure6" httpUri="https://binary.pensoft.net/fig/317902" pageId="7" pageNumber="134" start="Figure 6" startId="F6">
|
||
<paragraph pageId="7" pageNumber="134">
|
||
<emphasis bold="true" pageId="7" pageNumber="134">Figure 6.</emphasis>
|
||
LM micrographs of leaf epidermis of
|
||
<taxonomicName authorityName="Guo & Chen & Chen & Li" authorityYear="2019" baseAuthorityName="Guo & Chen & Chen & Li" baseAuthorityYear="2019" class="Magnoliopsida" family="Polygonaceae" genus="Persicaria" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Persicaria rotunda" order="Caryophyllales" pageId="7" pageNumber="134" phylum="Tracheophyta" rank="species" species="rotunda">
|
||
<emphasis italics="true" pageId="7" pageNumber="134">Persicaria rotunda</emphasis>
|
||
</taxonomicName>
|
||
(
|
||
<emphasis bold="true" pageId="7" pageNumber="134">A, B</emphasis>
|
||
) and
|
||
<taxonomicName lsidName="P. jucunda" pageId="7" pageNumber="134" rank="species" species="jucunda">
|
||
<emphasis italics="true" pageId="7" pageNumber="134">P. jucunda</emphasis>
|
||
</taxonomicName>
|
||
(
|
||
<emphasis bold="true" pageId="7" pageNumber="134">C, D</emphasis>
|
||
).
|
||
<emphasis bold="true" pageId="7" pageNumber="134">A, C</emphasis>
|
||
upper epidermis
|
||
<emphasis bold="true" pageId="7" pageNumber="134">B, D</emphasis>
|
||
lower epidermis. Arrow in B shows the four-celled peltate and spheroidal glands of
|
||
<taxonomicName lsidName="P. rotunda" pageId="7" pageNumber="134" rank="species" species="rotunda">
|
||
<emphasis italics="true" pageId="7" pageNumber="134">P. rotunda</emphasis>
|
||
</taxonomicName>
|
||
and in
|
||
<emphasis bold="true" pageId="7" pageNumber="134">C</emphasis>
|
||
indicates the two-celled peltate glands of
|
||
<taxonomicName lsidName="P. jucunda" pageId="7" pageNumber="134" rank="species" species="jucunda">
|
||
<emphasis italics="true" pageId="7" pageNumber="134">P. jucunda</emphasis>
|
||
</taxonomicName>
|
||
. Scale bars: 500
|
||
<normalizedToken originalValue="μm">μm</normalizedToken>
|
||
.
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph pageId="7" pageNumber="134">
|
||
In the protologue,
|
||
<bibRefCitation DOI="https://doi.org/10.1360/aps06205" author="Zhou, ZZ" journalOrPublisher="Zhiwu Fenlei Xuebao" pageId="9" pageNumber="136" pagination="713 - 718" refId="B17" refString="Zhou, ZZ, Sun, Q, Xu, W, Shen, J, Xu, L, Zhao, X, 2007. Polygonum jucundum var. rotundum Z.Z. Zhou & Q.Y. Sun, a new variety of Polygonaceae from Anhui, China. Zhiwu Fenlei Xuebao 45 (05): 713 - 718, DOI: https://doi.org/10.1360/aps06205" title="Polygonum jucundum var. rotundum Z. Z. Zhou & Q. Y. Sun, a new variety of Polygonaceae from Anhui, China." url="https://doi.org/10.1360/aps06205" volume="45" year="2007">Zhou et al. (2007)</bibRefCitation>
|
||
also investigated the tepal micro-characteristics of
|
||
<taxonomicName lsidName="P. rotunda" pageId="7" pageNumber="134" rank="species" species="rotunda">
|
||
<emphasis italics="true" pageId="7" pageNumber="134">P. rotunda</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName lsidName="P. jucunda" pageId="7" pageNumber="134" rank="species" species="jucunda">
|
||
<emphasis italics="true" pageId="7" pageNumber="134">P. jucunda</emphasis>
|
||
</taxonomicName>
|
||
and listed their differences: the anticlinal walls of epidermal cells are curved to sinuolate in
|
||
<taxonomicName lsidName="P. rotunda" pageId="7" pageNumber="134" rank="species" species="rotunda">
|
||
<emphasis italics="true" pageId="7" pageNumber="134">P. rotunda</emphasis>
|
||
</taxonomicName>
|
||
, while sinuolate to sinuate in
|
||
<taxonomicName lsidName="P. jucunda" pageId="7" pageNumber="134" rank="species" species="jucunda">
|
||
<emphasis italics="true" pageId="7" pageNumber="134">P. jucunda</emphasis>
|
||
</taxonomicName>
|
||
; the cuticular layer has longitudinally 10-14 of sinuate striates in
|
||
<taxonomicName lsidName="P. rotunda" pageId="7" pageNumber="134" rank="species" species="rotunda">
|
||
<emphasis italics="true" pageId="7" pageNumber="134">P. rotunda</emphasis>
|
||
</taxonomicName>
|
||
, while 12-18 straight to sinuolate striates in
|
||
<taxonomicName lsidName="P. jucunda" pageId="7" pageNumber="134" rank="species" species="jucunda">
|
||
<emphasis italics="true" pageId="7" pageNumber="134">P. jucunda</emphasis>
|
||
</taxonomicName>
|
||
. Taking all the above morphological and micro-morphological evidence together, we think that
|
||
<taxonomicName lsidName="P. rotunda" pageId="7" pageNumber="134" rank="species" species="rotunda">
|
||
<emphasis italics="true" pageId="7" pageNumber="134">P. rotunda</emphasis>
|
||
</taxonomicName>
|
||
represents a distinct species in
|
||
<taxonomicName class="Magnoliopsida" family="Polygonaceae" genus="Persicaria" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Persicaria" order="Caryophyllales" pageId="7" pageNumber="134" phylum="Tracheophyta" rank="genus">
|
||
<emphasis italics="true" pageId="7" pageNumber="134">Persicaria</emphasis>
|
||
</taxonomicName>
|
||
and it should not be placed under
|
||
<taxonomicName lsidName="P. jucunda" pageId="7" pageNumber="134" rank="species" species="jucunda">
|
||
<emphasis italics="true" pageId="7" pageNumber="134">P. jucunda</emphasis>
|
||
</taxonomicName>
|
||
as a variety, but be treated as a separate species.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |