284 lines
19 KiB
XML
284 lines
19 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/phytokeys.88.12891" ID-PMC="PMC5672133" ID-Pensoft-Pub="1314-2003-88-1" ID-Pensoft-UUID="FF96FFA8FFCD17717013D224FF85FF9F" ID-PubMed="29118645" ID-Zenodo-Dep="1138043" ModsDocID="1314-2003-88-1" checkinTime="1507734418711" checkinUser="pensoft" docAuthor="Wood, John R. I., Munoz-Rodriguez, Pablo, Degen, Rosa & Scotland, Robert W." docDate="2017" docId="58B79F24AACA544EB430F1743EB871ED" docLanguage="en" docName="PhytoKeys 88: 1-38" docOrigin="PhytoKeys 88" docPubDate="2017-10-11" docSource="http://dx.doi.org/10.3897/phytokeys.88.12891" docTitle="Ipomoea attenuata J. R. I. Wood & Scotland 2017, sp. nov." docType="treatment" docVersion="3" id="FF96FFA8FFCD17717013D224FF85FF9F" lastPageNumber="5" masterDocId="FF96FFA8FFCD17717013D224FF85FF9F" masterDocTitle="New species of Ipomoea (Convolvulaceae) from South America" masterLastPageNumber="38" masterPageNumber="1" pageNumber="3" updateTime="1668142099483" 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>New species of Ipomoea (Convolvulaceae) from South America</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>Wood, John R. I.</mods:namePart>
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<mods:affiliation>Department of Plant Sciences, University of Oxford, South Parks Road, Oxford, OX 1 3 RB, UK & Honorary Research Associate, Royal Botanic Gardens, Kew, Richmond, Surrey, TW 9 3 AB, UK</mods:affiliation>
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<mods:nameIdentifier type="email">jriwood@hotmail.com</mods:nameIdentifier>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Munoz-Rodriguez, Pablo</mods:namePart>
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<mods:affiliation>Department of Plant Sciences, University of Oxford, South Parks Road, Oxford, OX 1 3 RB, UK</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>Degen, Rosa</mods:namePart>
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<mods:affiliation>Facultad de Ciencias Quimicas, Departamento de Botanica, Universidad Nacional de Asuncion, Herbario FCQ, Casilla de Correo Campus UNA, 11001 - 3291, Paraguay</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>Scotland, Robert W.</mods:namePart>
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<mods:affiliation>Department of Plant Sciences, University of Oxford, South Parks Road, Oxford, OX 1 3 RB, UK</mods:affiliation>
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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>2017</mods:date>
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<mods:detail type="pubDate">
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<mods:number>2017-10-11</mods:number>
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</mods:detail>
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<mods:detail type="volume">
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<mods:number>88</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>1</mods:start>
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<mods:end>38</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.88.12891</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.88.12891</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1314-2003-88-1</mods:identifier>
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<mods:identifier type="Pensoft-UUID">FF96FFA8FFCD17717013D224FF85FF9F</mods:identifier>
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<mods:identifier type="Zenodo-Dep">1138043</mods:identifier>
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</mods:mods>
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<treatment ID-GBIF-Taxon="182225740" LSID="urn:lsid:plazi:treatment:58B79F24AACA544EB430F1743EB871ED" httpUri="http://treatment.plazi.org/id/58B79F24AACA544EB430F1743EB871ED" lastPageId="4" lastPageNumber="5" pageId="2" pageNumber="3">
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<subSubSection pageId="2" pageNumber="3" type="nomenclature">
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<paragraph pageId="2" pageNumber="3">
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<taxonomicName LSID="58B79F24-AACA-544E-B430-F1743EB871ED" authority="J. R. I. Wood & Scotland" authorityName="J. R. I. Wood & Scotland" authorityYear="2017" class="Magnoliopsida" family="Convolvulaceae" genus="Ipomoea" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Ipomoea attenuata" order="Solanales" pageId="2" pageNumber="3" phylum="Tracheophyta" rank="species" species="attenuata" status="sp. nov.">Ipomoea attenuata J.R.I.Wood & Scotland</taxonomicName>
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<taxonomicNameLabel pageId="2" pageNumber="3">sp. nov.</taxonomicNameLabel>
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<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Ipomoea attenuata A habit B xylopodium C section of stem showing indumentum D sepals outermost (left) to innermost (right) E corolla opened out to show stamens F ovary and style G capsule H seed. Drawn by Rosemary Wise A-E from H. S. Irwin et al. 11019 F-H from M. Mendoza et al. 4802." figureDoi="10.3897/phytokeys.88.12891.figure1" httpUri="https://binary.pensoft.net/fig/160682" pageId="2" pageNumber="3">Figure 1</figureCitation>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="2" pageNumber="3" type="diagnosis">
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<paragraph pageId="2" pageNumber="3">Diagnosis.</paragraph>
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<paragraph pageId="2" pageNumber="3">
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<taxonomicName authorityName="J. R. I. Wood & Scotland" authorityYear="2017" class="Magnoliopsida" family="Convolvulaceae" genus="Ipomoea" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Ipomoea attenuata" order="Solanales" pageId="2" pageNumber="3" phylum="Tracheophyta" rank="species" species="attenuata">
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<emphasis italics="true" pageId="2" pageNumber="3">Ipomoea attenuata</emphasis>
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</taxonomicName>
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has been generally treated in herbaria as
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<taxonomicName lsidName="I. campestris" pageId="2" pageNumber="3" rank="species" species="campestris">
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<emphasis italics="true" pageId="2" pageNumber="3">I. campestris</emphasis>
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</taxonomicName>
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because of the similar leaves and the pubescent exterior of the corolla, but is readily distinguished by the distinctive ovate sepals, 11-14 mm long, with truncate base and long attenuate apex. Additionally, the inflorescence is of elongate complex cymes, somewhat racemose in form and with distinctive persistent linear-lanceolate bracteoles. This contrasts with
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<taxonomicName lsidName="I. campestris" pageId="2" pageNumber="3" rank="species" species="campestris">
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<emphasis italics="true" pageId="2" pageNumber="3">I. campestris</emphasis>
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</taxonomicName>
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, which has oblong-ovate, acute sepals 8-11 mm long, clearly narrowed to the base. The inflorescence of
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<taxonomicName lsidName="I. campestris" pageId="2" pageNumber="3" rank="species" species="campestris">
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<emphasis italics="true" pageId="2" pageNumber="3">I. campestris</emphasis>
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</taxonomicName>
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is short, usually less than 5 cm long, and consists of shortly pedunculate cymes, these often reduced to single flowers, the bracteoles caducous (Table
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<tableCitation captionStart="Table 1" captionStartId="T1" captionText="Table 1. Differences between Ipomoea campestris, I. attenuata, I. dolichopoda and I. ensiformis." httpUri="http://table.plazi.org/id/4F2F0CBEC0C2B495B6853794F74427ED" pageId="2" pageNumber="3" tableUuid="4F2F0CBEC0C2B495B6853794F74427ED">1</tableCitation>
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).
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</paragraph>
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<caption ID-Zenodo-Dep="1138045" doi="10.3897/phytokeys.88.12891.figure1" httpUri="https://binary.pensoft.net/fig/160682" pageId="2" pageNumber="3" start="Figure 1" startId="F1">
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<paragraph pageId="2" pageNumber="3">
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<emphasis bold="true" pageId="2" pageNumber="3">Figure 1.</emphasis>
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<taxonomicName authorityName="J. R. I. Wood & Scotland" authorityYear="2017" class="Magnoliopsida" family="Convolvulaceae" genus="Ipomoea" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Ipomoea attenuata" order="Solanales" pageId="2" pageNumber="3" phylum="Tracheophyta" rank="species" species="attenuata">
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<emphasis italics="true" pageId="2" pageNumber="3">Ipomoea attenuata</emphasis>
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</taxonomicName>
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<emphasis bold="true" pageId="2" pageNumber="3">A</emphasis>
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habit
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<emphasis bold="true" pageId="2" pageNumber="3">B</emphasis>
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xylopodium
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<emphasis bold="true" pageId="2" pageNumber="3">C</emphasis>
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section of stem showing indumentum
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<emphasis bold="true" pageId="2" pageNumber="3">D</emphasis>
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sepals outermost (left) to innermost (right)
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<emphasis bold="true" pageId="2" pageNumber="3">E</emphasis>
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corolla opened out to show stamens
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<emphasis bold="true" pageId="2" pageNumber="3">F</emphasis>
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ovary and style
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<emphasis bold="true" pageId="2" pageNumber="3">G</emphasis>
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capsule
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<emphasis bold="true" pageId="2" pageNumber="3">H</emphasis>
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seed. Drawn by Rosemary Wise
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<emphasis bold="true" pageId="2" pageNumber="3">A-E</emphasis>
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from
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<emphasis italics="true" pageId="2" pageNumber="3">H.S. Irwin et al.</emphasis>
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11019
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<emphasis bold="true" pageId="2" pageNumber="3">F-H</emphasis>
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from
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<emphasis italics="true" pageId="2" pageNumber="3">M. Mendoza et al.</emphasis>
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4802.
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</paragraph>
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</caption>
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</subSubSection>
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<subSubSection pageId="2" pageNumber="3" type="materials_examined">
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<paragraph pageId="2" pageNumber="3">
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<typeStatus>Type</typeStatus>
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.
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</paragraph>
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<paragraph pageId="2" pageNumber="3">
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<materialsCitation collectingDate="2015-02-26" collectorName="Loc. Gama, BR, M. Mendoza, J. B. A. Brugel, A. A. Santos, T. Reis, T. K. M. Arquelao" country="BRAZIL" elevation="1030" latitude="-15.5756" location="Tevo" longLatPrecision="7" longitude="-48.1059" specimenCount="1" stateProvince="Distrito Federal" typeStatus="holotype">
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<collectingCountry name="Brazil">BRAZIL</collectingCountry>
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.
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<collectingRegion country="Brazil" name="Distrito Federal">Distrito Federal</collectingRegion>
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,
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<collectorName>Loc. Gama, BR</collectorName>
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60, ca.
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<quantity metricMagnitude="3" metricUnit="m" metricValue="8.2" unit="km" value="8.2">8.2 km</quantity>
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do
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<location LSID="urn:lsid:plazi:treatment:58B79F24AACA544EB430F1743EB871ED:2D222FA5D09E37D66420D857327D0E21" country="BRAZIL" latitude="-15.5756" longLatPrecision="7" longitude="-48.1059" name="Tevo" stateProvince="Distrito Federal">Tevo</location>
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, DF-180 SO, disturbed campo sujo, dispersed locally,
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<geoCoordinate degrees="15.5756" direction="south" orientation="latitude" precision="5" value="-15.5756">15.5756°S</geoCoordinate>
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<geoCoordinate degrees="48.1059" direction="west" orientation="longitude" precision="5" value="-48.1059">48.1059°W</geoCoordinate>
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,
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<quantity metricMagnitude="3" metricUnit="m" metricValue="1.03" unit="m" value="1030.0">
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<elevation metricMagnitude="3" metricUnit="m" metricValue="1.03" unit="m" value="1030.0">1030 m</elevation>
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</quantity>
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,
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<collectingDate value="2015-02-26">26 Feb. 2015</collectingDate>
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,
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<emphasis italics="true" pageId="2" pageNumber="3">
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<collectorName>M. Mendoza</collectorName>
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,
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<collectorName>J.B.A. Brugel</collectorName>
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,
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<collectorName>A.A. Santos</collectorName>
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,
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<collectorName>T. Reis</collectorName>
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&
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<collectorName>
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T.K.M.
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<normalizedToken originalValue="Arquelão">Arquelao</normalizedToken>
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</collectorName>
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</emphasis>
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4802 (
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<typeStatus>holotype</typeStatus>
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UB, isotypes CEN, K)
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</materialsCitation>
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.
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</paragraph>
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</subSubSection>
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<subSubSection lastPageId="3" lastPageNumber="4" pageId="2" pageNumber="3" type="description">
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<paragraph pageId="2" pageNumber="3">Description.</paragraph>
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<paragraph lastPageId="3" lastPageNumber="4" pageId="2" pageNumber="3">
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Perennial herb; rootstock a woody xylopodium; stems up to 80 cm long, 2 mm diam., decumbent, weakly ascending or, fide field notes, climbing, pubescent with relatively long, often twisted, spreading and appressed hairs. Leaves shortly petiolate, 4-10
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<normalizedToken originalValue="×">x</normalizedToken>
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0.3-0.7 cm, narrowly oblong, entire, apex acute and shortly mucronate, base cuneate, both surfaces thinly pubescent but more densely so abaxi
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<pageBreakToken pageId="3" pageNumber="4" start="start">ally</pageBreakToken>
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; petioles 3-7 mm long, pubescent. Inflorescence of lax, compounded axillary cymes from the middle and upper leaf axils; cymes up to 15 cm long, rather narrow, diminishing in size upwards, irregularly racemose in form; peduncle 2-7 cm long, often extending into a rhachis, pubescent; primary bracteoles foliose, 9-12
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<normalizedToken originalValue="×">x</normalizedToken>
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1-3 mm, linear, acuminate, persistent; secondary peduncles 0.5-2 cm long, thinly pubescent; ultimate bracteoles 4-7
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<normalizedToken originalValue="×">x</normalizedToken>
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0.5-1 mm, linear-lanceolate, finely acuminate to attenuate, persistent; pedicels very short, 3-5 mm long, a few scattered hairs present; calyx ovate in outline; sepals subequal, 11-14
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<normalizedToken originalValue="×">x</normalizedToken>
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4-5 mm, ovate with distinct truncate base and long-attenuated acuminate apex, glabrous, the inner sepals very slightly longer than outer; corolla funnel-shaped, pink or reddish-purple, 4-5 cm long, pubescent on the midpetaline bands, limb c. 2.5-3 cm diam., shallowly lobed; stamens glabrous except at the base, unequal, longer 1.7-1.8 cm, shorter c. 1 cm, anthers linear, c. 3 mm long; ovary bilocular, glabrous; style glabrous, stigma bilobed. Capsule 13-15
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<normalizedToken originalValue="×">x</normalizedToken>
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8 mm, ovoid, glabrous; seeds 7
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<normalizedToken originalValue="×">x</normalizedToken>
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3.5 mm, ellipsoid, blackish-brown, glabrous except for pubescence along the angles.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="3" pageNumber="4" type="distribution">
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<paragraph pageId="3" pageNumber="4">Distribution and habitat.</paragraph>
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<paragraph pageId="3" pageNumber="4">
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BRAZIL. Endemic to the Distrito Federal and
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<normalizedToken originalValue="Goiás">Goias</normalizedToken>
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State, where it appears to be a rare species of cerrado. Figure
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<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Map of Eastern Brazil and Paraguay showing distribution of Ipomoea attenuata (▲), I. dasycarpa (■) and I. dolichopoda (✖)." figureDoi="10.3897/phytokeys.88.12891.figure2" httpUri="https://binary.pensoft.net/fig/160683" pageId="3" pageNumber="4">2</figureCitation>
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.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="4" pageNumber="5" type="additional collections seen">
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<paragraph pageId="4" pageNumber="5">
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<pageBreakToken pageId="4" pageNumber="5" start="start">Additional</pageBreakToken>
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collections seen.
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</paragraph>
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<paragraph pageId="4" pageNumber="5">
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<normalizedToken originalValue="Goiás">Goias</normalizedToken>
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: Samambaia, Rio
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<normalizedToken originalValue="Corumbá">Corumba</normalizedToken>
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,
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<emphasis italics="true" pageId="4" pageNumber="5">E.P. Heringer</emphasis>
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11283 (NY).
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<normalizedToken originalValue="Goiás">Goias</normalizedToken>
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: Mun. Luziania, Santo Antonio do Descoberto,
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<emphasis italics="true" pageId="4" pageNumber="5">
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R.C.
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<normalizedToken originalValue="Mendonça">Mendonca</normalizedToken>
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</emphasis>
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93 (IBGE, NY).
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<normalizedToken originalValue="Goiás">Goias</normalizedToken>
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: Serra dos Pireneus, c. 20 km S of
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<normalizedToken originalValue="Corumbá">Corumba</normalizedToken>
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de
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<normalizedToken originalValue="Goiás">Goias</normalizedToken>
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,
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<emphasis italics="true" pageId="4" pageNumber="5">H.S. Irwin et al.</emphasis>
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11019 (NY).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="4" pageNumber="5" type="conservation status">
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<paragraph pageId="4" pageNumber="5">Conservation status.</paragraph>
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<paragraph pageId="4" pageNumber="5">
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This species has been found in four separate locations. Two of the four collections are of apparent unicates and the only collection for which any details are available is the type. The field notes of this collection describe the plant as dispersed in campo sujo.
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<taxonomicName authorityName="J. R. I. Wood & Scotland" authorityYear="2017" class="Magnoliopsida" family="Convolvulaceae" genus="Ipomoea" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Ipomoea attenuata" order="Solanales" pageId="4" pageNumber="5" phylum="Tracheophyta" rank="species" species="attenuata">
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<emphasis italics="true" pageId="4" pageNumber="5">Ipomoea attenuata</emphasis>
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</taxonomicName>
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is, therefore, apparently rare but relatively widely distributed. (Fig.
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<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Map of Eastern Brazil and Paraguay showing distribution of Ipomoea attenuata (▲), I. dasycarpa (■) and I. dolichopoda (✖)." figureDoi="10.3897/phytokeys.88.12891.figure2" httpUri="https://binary.pensoft.net/fig/160683" pageId="4" pageNumber="5">2</figureCitation>
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). It has an area of occupancy of approximately 16.000 km², thus indicating Endangered status (EN) within IUCN guidelines (2012) but should probably be treated as Data Deficient (DD) until the populations of this species can be carefully evaluated.
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</paragraph>
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<caption ID-Zenodo-Dep="1138067" doi="10.3897/phytokeys.88.12891.figure2" httpUri="https://binary.pensoft.net/fig/160683" pageId="4" pageNumber="5" start="Figure 2" startId="F2">
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<paragraph pageId="4" pageNumber="5">
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<emphasis bold="true" pageId="4" pageNumber="5">Figure 2.</emphasis>
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Map of Eastern Brazil and Paraguay showing distribution of
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<taxonomicName authorityName="J. R. I. Wood & Scotland" authorityYear="2017" class="Magnoliopsida" family="Convolvulaceae" genus="Ipomoea" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Ipomoea attenuata" order="Solanales" pageId="4" pageNumber="5" phylum="Tracheophyta" rank="species" species="attenuata">
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<emphasis italics="true" pageId="4" pageNumber="5">Ipomoea attenuata</emphasis>
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</taxonomicName>
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(▲),
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<taxonomicName lsidName="I. dasycarpa" pageId="4" pageNumber="5" rank="species" species="dasycarpa">
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<emphasis italics="true" pageId="4" pageNumber="5">I. dasycarpa</emphasis>
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</taxonomicName>
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(■) and
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<taxonomicName lsidName="I. dolichopoda" pageId="4" pageNumber="5" rank="species" species="dolichopoda">
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<emphasis italics="true" pageId="4" pageNumber="5">I. dolichopoda</emphasis>
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</taxonomicName>
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(✖).
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</paragraph>
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</caption>
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</subSubSection>
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<subSubSection pageId="4" pageNumber="5" type="etymology">
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<paragraph pageId="4" pageNumber="5">Etymology.</paragraph>
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<paragraph pageId="4" pageNumber="5">
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The epithet "
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<taxonomicName lsidName="attenuata" pageId="4" pageNumber="5" rank="species" species="attenuata">
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<emphasis italics="true" pageId="4" pageNumber="5">attenuata</emphasis>
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</taxonomicName>
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" refers to the attenuate tips of the sepals and bracteoles.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="4" pageNumber="5" type="notes">
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<paragraph pageId="4" pageNumber="5">Notes.</paragraph>
|
||
<paragraph pageId="4" pageNumber="5">
|
||
Although we have not been able to sequence this species,
|
||
<taxonomicName lsidName="I. attenuata" pageId="4" pageNumber="5" rank="species" species="attenuata">
|
||
<emphasis italics="true" pageId="4" pageNumber="5">I. attenuata</emphasis>
|
||
</taxonomicName>
|
||
probably belongs to a large clade of around 70 species almost restricted to South America, which is characterised morphologically by the pubescent exterior of the corolla and the subequal, pubescent, ovate herbaceous sepals. However, the attenuate sepal tips raise doubts about this tentative placement as this shape is atypical of species in this clade.
|
||
</paragraph>
|
||
<paragraph pageId="4" pageNumber="5">The form of the inflorescence (axillary cymes) combined with the oblong leaf shape strongly suggests this is essentially a decumbent species even though this is not indicated in field notes.</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |