A morphological and anatomical survey of Virectaria (African Rubiaceae), with a discussion of its taxonomic position
Identifieur interne : 000B89 ( Istex/Corpus ); précédent : 000B88; suivant : 000B90A morphological and anatomical survey of Virectaria (African Rubiaceae), with a discussion of its taxonomic position
Auteurs : S. Dessein ; S. Jansen ; S. Huysmans ; E. Robbrecht ; E. SmetsSource :
- Botanical Journal of the Linnean Society [ 0024-4074 ] ; 2001-09.
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- KwdEn :
Abstract
A detailed morphological and anatomical study of the tropical African genus Virectaria is presented. The observations are used to characterize the genus, to propose a key to all eight species, and to unravel the relationships between the species using cladistics. A taxonomic survey of the genus is also given. Verdcourt's infraspecific taxa based on calyx morphology in V major are adopted, but it was found that morphological distinction is correlated with ecological, habit and distributional differences. Hence, it is better to recognize Verdcourt's varieties spathulata and major as subspecies of V. major. The problematic systematic position of the genus is discussed in detail. New evidence is given for the exclusion of the genus from the Hedyotideae and Ophiorrhizeae (subfamily Rubioideae). The recently proposed position in the Sabiceeae (subfamily Ixoroideae) is not convincing either, since none of the genera included in the Sabiceeae matches Virectaria with respect to pollen, fruit, flower and growth habit. Exclusion from the Rubioideae and a position near the Sabiceeae is supported by lack of raphides, seed anatomy, placentation, stipule morphology and molecular evidence. Molecular data from a larger number of taxa are needed to confirm the position of the genus.
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DOI: 10.1111/j.1095-8339.2001.tb01102.x
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ISTEX:DADA37DAE5D7569E49E92A714D5421B7428EBF14Le document en format XML
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Leuven, Kasteelpark Arenberg 31, B‐3001 Leuven, Belgium</affiliation></author><author><persName><forename type="first">S.</forename><surname>JANSEN</surname></persName><affiliation>Laboratory of Plant Systematics, Institute of Botany and Microbiology, K.U. Leuven, Kasteelpark Arenberg 31, B‐3001 Leuven, Belgium</affiliation></author><author><persName><forename type="first">S.</forename><surname>HUYSMANS</surname></persName><affiliation>Laboratory of Plant Systematics, Institute of Botany and Microbiology, K.U. Leuven, Kasteelpark Arenberg 31, B‐3001 Leuven, Belgium</affiliation></author><author><persName><forename type="first">E.</forename><surname>ROBBRECHT</surname></persName><affiliation>National Botanic Garden, Domein van Bouchout, B‐1860 Meise, Belgium</affiliation></author><author><persName><forename type="first">E.</forename><surname>SMETS</surname></persName><affiliation>Laboratory of Plant Systematics, Institute of Botany and Microbiology, K.U. 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Exclusion from the Rubioideae and a position near the Sabiceeae is supported by lack of raphides, seed anatomy, placentation, stipule morphology and molecular evidence. Molecular data from a larger number of taxa are needed to confirm the position of the genus.</p></abstract><textClass xml:lang="en"><keywords scheme="keyword"><list><head>Keywords</head><item><term>cladistic analysis</term></item><item><term>fruit</term></item><item><term>ovary</term></item><item><term>pollen morphology</term></item><item><term>Sabiceeae</term></item><item><term>seed anatomy</term></item><item><term>wood anatomy</term></item></list></keywords></textClass></profileDesc><revisionDesc><change when="2001-09">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><original>false</original><mimetype>text/plain</mimetype><extension>txt</extension><uri>https://api.istex.fr/document/DADA37DAE5D7569E49E92A714D5421B7428EBF14/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Wiley, elements deleted: body"><istex:xmlDeclaration>version="1.0" encoding="UTF-8" standalone="yes"</istex:xmlDeclaration><istex:document><component version="2.0" type="serialArticle" xml:lang="en"><header><publicationMeta level="product"><publisherInfo><publisherName>Blackwell Publishing Ltd</publisherName><publisherLoc>Oxford, UK</publisherLoc></publisherInfo><doi origin="wiley" registered="yes">10.1111/(ISSN)1095-8339</doi><issn type="print">0024-4074</issn><issn type="electronic">1095-8339</issn><idGroup><id type="product" value="BOJ"></id><id type="publisherDivision" value="ST"></id></idGroup><titleGroup><title type="main" sort="BOTANICAL JOURNAL OF THE LINNEAN SOCIETY">Botanical Journal of the Linnean Society</title></titleGroup></publicationMeta><publicationMeta level="part" position="09101"><doi origin="wiley">10.1111/boj.2001.137.issue-1</doi><numberingGroup><numbering type="journalVolume" number="137">137</numbering><numbering type="journalIssue" number="1">1</numbering></numberingGroup><coverDate startDate="2001-09">September 2001</coverDate></publicationMeta><publicationMeta level="unit" type="article" position="0000100" status="forIssue"><doi origin="wiley">10.1111/j.1095-8339.2001.tb01102.x</doi><idGroup><id type="unit" value="BOJ1"></id></idGroup><countGroup><count type="pageTotal" number="29"></count></countGroup><titleGroup><title type="tocHeading1">Original Article</title></titleGroup><eventGroup><event type="firstOnline" date="2008-06-28"></event><event type="publishedOnlineFinalForm" date="2008-06-28"></event><event type="xmlConverted" agent="Converter:BPG_TO_WML3G version:2.5.2 mode:FullText" date="2011-08-04"></event><event type="xmlConverted" agent="Converter:WILEY_ML3G_TO_WILEY_ML3GV2 version:3.8.8" date="2014-01-08"></event><event type="xmlConverted" agent="Converter:WML3G_To_WML3G version:4.1.7 mode:FullText,remove_FC" date="2014-10-15"></event></eventGroup><numberingGroup><numbering type="pageFirst" number="1">1</numbering><numbering type="pageLast" number="29">29</numbering></numberingGroup><correspondenceTo>*E‐mail: <email>steven.dessein@bio.kuleuven.ac.be</email></correspondenceTo><linkGroup><link type="toTypesetVersion" href="file:BOJ.BOJ1.pdf"></link></linkGroup></publicationMeta><contentMeta><unparsedEditorialHistory>Received April 2000; accepted for publication January 2001</unparsedEditorialHistory><countGroup><count type="referenceTotal" number="50"></count><count type="linksCrossRef" number="6"></count></countGroup><titleGroup><title type="main">A morphological and anatomical survey of <i>Virectaria</i> (African Rubiaceae), with a discussion of its taxonomic position</title></titleGroup><creators><creator creatorRole="author" xml:id="cr1" affiliationRef="#a1" corresponding="yes"><personName><givenNames>S.</givenNames><familyName>DESSEIN</familyName></personName></creator><creator creatorRole="author" xml:id="cr2" affiliationRef="#a1"><personName><givenNames>S.</givenNames><familyName>JANSEN</familyName></personName></creator><creator creatorRole="author" xml:id="cr3" affiliationRef="#a1"><personName><givenNames>S.</givenNames><familyName>HUYSMANS</familyName></personName></creator><creator creatorRole="author" xml:id="cr4" affiliationRef="#a2"><personName><givenNames>E.</givenNames><familyName>ROBBRECHT</familyName></personName></creator><creator creatorRole="author" xml:id="cr5" affiliationRef="#a1"><personName><givenNames>E.</givenNames><familyName>SMETS</familyName></personName></creator></creators><affiliationGroup><affiliation xml:id="a1" countryCode="BE"><unparsedAffiliation>Laboratory of Plant Systematics, Institute of Botany and Microbiology, K.U. Leuven, Kasteelpark Arenberg 31, B‐3001 Leuven, Belgium</unparsedAffiliation></affiliation><affiliation xml:id="a2" countryCode="BE"><unparsedAffiliation>National Botanic Garden, Domein van Bouchout, B‐1860 Meise, Belgium</unparsedAffiliation></affiliation></affiliationGroup><keywordGroup xml:lang="en"><keyword xml:id="k1">cladistic analysis</keyword><keyword xml:id="k2">fruit</keyword><keyword xml:id="k3">ovary</keyword><keyword xml:id="k4">pollen morphology</keyword><keyword xml:id="k5">Sabiceeae</keyword><keyword xml:id="k6">seed anatomy</keyword><keyword xml:id="k7">wood anatomy</keyword></keywordGroup><abstractGroup><abstract type="main" xml:lang="en"><p>A detailed morphological and anatomical study of the tropical African genus <i>Virectaria</i> is presented. The observations are used to characterize the genus, to propose a key to all eight species, and to unravel the relationships between the species using cladistics. A taxonomic survey of the genus is also given. Verdcourt's infraspecific taxa based on calyx morphology in <i>V major</i> are adopted, but it was found that morphological distinction is correlated with ecological, habit and distributional differences. Hence, it is better to recognize Verdcourt's varieties <i>spathulata</i> and <i>major</i> as subspecies of <i>V. major.</i> The problematic systematic position of the genus is discussed in detail. New evidence is given for the exclusion of the genus from the Hedyotideae and Ophiorrhizeae (subfamily Rubioideae). The recently proposed position in the Sabiceeae (subfamily Ixoroideae) is not convincing either, since none of the genera included in the Sabiceeae matches <i>Virectaria</i> with respect to pollen, fruit, flower and growth habit. Exclusion from the Rubioideae and a position near the Sabiceeae is supported by lack of raphides, seed anatomy, placentation, stipule morphology and molecular evidence. 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The observations are used to characterize the genus, to propose a key to all eight species, and to unravel the relationships between the species using cladistics. A taxonomic survey of the genus is also given. Verdcourt's infraspecific taxa based on calyx morphology in V major are adopted, but it was found that morphological distinction is correlated with ecological, habit and distributional differences. Hence, it is better to recognize Verdcourt's varieties spathulata and major as subspecies of V. major. The problematic systematic position of the genus is discussed in detail. New evidence is given for the exclusion of the genus from the Hedyotideae and Ophiorrhizeae (subfamily Rubioideae). The recently proposed position in the Sabiceeae (subfamily Ixoroideae) is not convincing either, since none of the genera included in the Sabiceeae matches Virectaria with respect to pollen, fruit, flower and growth habit. Exclusion from the Rubioideae and a position near the Sabiceeae is supported by lack of raphides, seed anatomy, placentation, stipule morphology and molecular evidence. Molecular data from a larger number of taxa are needed to confirm the position of the genus.</abstract><subject lang="en"><genre>Keywords</genre><topic>cladistic analysis</topic><topic>fruit</topic><topic>ovary</topic><topic>pollen morphology</topic><topic>Sabiceeae</topic><topic>seed anatomy</topic><topic>wood anatomy</topic></subject><relatedItem type="host"><titleInfo><title>Botanical Journal of the Linnean Society</title></titleInfo><genre type="Journal">journal</genre><identifier type="ISSN">0024-4074</identifier><identifier type="eISSN">1095-8339</identifier><identifier type="DOI">10.1111/(ISSN)1095-8339</identifier><identifier type="PublisherID">BOJ</identifier><part><date>2001</date><detail type="volume"><caption>vol.</caption><number>137</number></detail><detail type="issue"><caption>no.</caption><number>1</number></detail><extent unit="pages"><start>1</start><end>29</end><total>29</total></extent></part></relatedItem><identifier type="istex">DADA37DAE5D7569E49E92A714D5421B7428EBF14</identifier><identifier type="DOI">10.1111/j.1095-8339.2001.tb01102.x</identifier><identifier type="ArticleID">BOJ1</identifier><recordInfo><recordContentSource>WILEY</recordContentSource><recordOrigin>Blackwell Publishing Ltd</recordOrigin></recordInfo></mods></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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|texte= A morphological and anatomical survey of Virectaria (African Rubiaceae), with a discussion of its taxonomic position
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