171 lines
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171 lines
13 KiB
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<document ID-DOI="http://dx.doi.org/10.3897/phytokeys.207.61432" ID-Pensoft-Pub="1314-2003-207-1" ID-Pensoft-UUID="29CD4EF8FB525DBAA022DF25CDB649C9" ModsDocID="1314-2003-207-1" checkinTime="1663699675791" checkinUser="pensoft" docAuthor="Couvreur, Thomas L. P., Dagallier, Leo-Paul M. J., Crozier, Francoise, Ghogue, Jean-Paul, Hoekstra, Paul H., Kamdem, Narcisse G., Johnson, David M., Murray, Nancy A. & Sonke, Bonaventure" docDate="2022" docId="C082E386300D030606D0D9662F5AED70" docLanguage="en" docName="PhytoKeys 207: 1-532" docOrigin="PhytoKeys 207" docPubDate="2022-09-20" docSource="http://dx.doi.org/10.3897/phytokeys.207.61432" docTitle="Isolona Engl., Nat. Pflanzenfam. Nachtr. I: 161 1897" docType="treatment" docVersion="1" id="29CD4EF8FB525DBAA022DF25CDB649C9" lastPageNumber="1" masterDocId="29CD4EF8FB525DBAA022DF25CDB649C9" masterDocTitle="Flora of Cameroon - Annonaceae Vol 45" masterLastPageNumber="532" masterPageNumber="1" pageNumber="1" updateTime="1663699675791" updateUser="pensoft">
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<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:titleInfo>
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<mods:title>Flora of Cameroon - Annonaceae Vol 45</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>Couvreur, Thomas L. P.</mods:namePart>
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<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0002-8509-6587</mods:nameIdentifier>
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<mods:affiliation>IRD, DIADE, Univ Montpellier, Montpellier, France & Universite de Yaounde I, Ecole Normale Superieure, Departement des Sciences Biologiques, Laboratoire de Botanique systematique et d'Ecologie, B. P. 047, Yaounde, Cameroon & Naturalis Biodiversity Center, Botany Section, Darwinweg 2, 2333 CR Leiden, Netherlands</mods:affiliation>
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<mods:nameIdentifier type="email">thomas.couvreur@ird.fr</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>Dagallier, Leo-Paul M. J.</mods:namePart>
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<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0002-3270-1544</mods:nameIdentifier>
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<mods:affiliation>IRD, DIADE, Univ Montpellier, Montpellier, France</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>Crozier, Francoise</mods:namePart>
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<mods:affiliation>IRD, DIADE, Univ Montpellier, Montpellier, France</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>Ghogue, Jean-Paul</mods:namePart>
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<mods:affiliation>Universite de Yaounde I, Ecole Normale Superieure, Departement des Sciences Biologiques, Laboratoire de Botanique systematique et d'Ecologie, B. P. 047, Yaounde, Cameroon & Green Connexion, Environmental Group, siege face GP Melen, a cote de l'immeuble Palais des verres. Yaounde, Cameroun</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>Hoekstra, Paul H.</mods:namePart>
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<mods:affiliation>Naturalis Biodiversity Center, Botany Section, Darwinweg 2, 2333 CR Leiden, Netherlands</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>Kamdem, Narcisse G.</mods:namePart>
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<mods:affiliation>Universite de Yaounde I, Ecole Normale Superieure, Departement des Sciences Biologiques, Laboratoire de Botanique systematique et d'Ecologie, B. P. 047, Yaounde, Cameroon</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>Johnson, David M.</mods:namePart>
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<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0003-2896-7419</mods:nameIdentifier>
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<mods:affiliation>Department of Botany-Microbiology, Ohio Wesleyan University, Delaware, OH, 43015, USA</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>Murray, Nancy A.</mods:namePart>
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<mods:affiliation>Department of Botany-Microbiology, Ohio Wesleyan University, Delaware, OH, 43015, USA</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>Sonke, Bonaventure</mods:namePart>
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<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0002-4310-3603</mods:nameIdentifier>
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<mods:affiliation>Universite de Yaounde I, Ecole Normale Superieure, Departement des Sciences Biologiques, Laboratoire de Botanique systematique et d'Ecologie, B. P. 047, Yaounde, Cameroon</mods:affiliation>
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</mods:name>
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<mods:typeOfResource>text</mods:typeOfResource>
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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>2022</mods:date>
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<mods:detail type="pubDate">
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<mods:number>2022-09-20</mods:number>
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</mods:detail>
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<mods:detail type="volume">
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<mods:number>207</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>532</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.207.61432</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.207.61432</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1314-2003-207-1</mods:identifier>
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<mods:identifier type="Pensoft-UUID">29CD4EF8FB525DBAA022DF25CDB649C9</mods:identifier>
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</mods:mods>
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<treatment LSID="urn:lsid:plazi:treatment:C082E386300D030606D0D9662F5AED70" httpUri="http://treatment.plazi.org/id/C082E386300D030606D0D9662F5AED70" lastPageNumber="1" pageId="0" pageNumber="1">
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<subSubSection pageId="0" pageNumber="1" type="nomenclature">
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<paragraph pageId="0" pageNumber="1">
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<taxonomicName authority="Engl., Nat. Pflanzenfam. Nachtr. I: 161, 1897" authorityName="Engl., Nat. Pflanzenfam. Nachtr. I: 161" authorityYear="1897" class="Magnoliopsida" family="Annonaceae" genus="Isolona" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Isolona" order="Magnoliales" pageId="0" pageNumber="1" phylum="Tracheophyta" rank="genus">Isolona Engl., Nat. Pflanzenfam. Nachtr. I: 161, 1897</taxonomicName>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="1" type="type species">
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<paragraph pageId="0" pageNumber="1">Type species.</paragraph>
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<paragraph pageId="0" pageNumber="1">
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<taxonomicName class="Magnoliopsida" family="Annonaceae" genus="Isolona" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Isolona madagascariensis" order="Magnoliales" pageId="0" pageNumber="1" phylum="Tracheophyta" rank="species" species="madagascariensis">
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<emphasis italics="true" pageId="0" pageNumber="1">Isolona madagascariensis</emphasis>
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</taxonomicName>
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(A.DC.) Engl. & Diels (a species from Madagascar).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="1" type="description">
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<paragraph pageId="0" pageNumber="1">Description.</paragraph>
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<paragraph pageId="0" pageNumber="1">
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Trees, 3-30 m tall, d.b.h. 5-60 cm; stilt roots or buttresses absent. Indumentum of simple hairs or glabrous. Leaves: petiole 1-15 mm long, 1-4 mm in diameter, blade 8.5-29 cm long, 3-15 cm wide, elliptic or obovate or oblong, apex acuminate, base decurrent to rounded or acute, concolorous; midrib
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<emphasis bold="true" pageId="0" pageNumber="1">raised on upper surface</emphasis>
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; secondary veins 7 to 20 pairs; tertiary venation reticulate. Inflorescences ramiflorous on old leafless or young foliate branches, axillary. Flowers bisexual with 9 perianth parts in 2 whorls, 1 to 3 per inflorescence; pedicel 1-25 mm long, 1-2 mm in diameter; in fruit 2-29 mm long, 2-5 mm in diameter; bracts 2 to 7, several basal and one upper, lower half of pedicel; sepals 3, valvate, free, 1-9 mm long, 2-5 mm wide, ovate or elliptic, apex acute or acuminate or rounded, base truncate;
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<emphasis bold="true" pageId="0" pageNumber="1">petals 6, basally fused</emphasis>
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, tube 3-11 mm long,
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<emphasis bold="true" pageId="0" pageNumber="1">inner and outer whorl not differentiated</emphasis>
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, equal; lobes 6-31 mm long, 2-12 mm wide; stamens numerous, in 3 to 4 rows, 1-2 mm long, broad; connective discoid; staminodes absent;
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<emphasis bold="true" pageId="0" pageNumber="1">carpels fused - syncarpous, forming a single visible gynoecium</emphasis>
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, 1-3 mm long, stigma bilobed, slightly capitate or capitate.
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<emphasis bold="true" pageId="0" pageNumber="1">Fruit syncarpous</emphasis>
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,
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<emphasis bold="true" pageId="0" pageNumber="1">forming a single visible fruit</emphasis>
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, 30-90 mm long, 15-50 mm in diameter, ovoid or ellipsoid, apex apiculate or rounded or cuspidate; seeds numerous not seriate, 8-25 mm long, 5-15 mm in diameter, ellipsoid or flattened ellipsoid; aril absent.
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</paragraph>
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<paragraph pageId="0" pageNumber="1">A genus of trees with 20 known species, 15 in Africa and 5 in Madagascar. In Cameroon nine species are known, none endemic.</paragraph>
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<paragraph pageId="0" pageNumber="1">
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<taxonomicName authorityName="Engl., Nat. Pflanzenfam. Nachtr. I: 161" authorityYear="1897" class="Magnoliopsida" family="Annonaceae" genus="Isolona" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Isolona" order="Magnoliales" pageId="0" pageNumber="1" phylum="Tracheophyta" rank="genus">
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<emphasis italics="true" pageId="0" pageNumber="1">Isolona</emphasis>
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</taxonomicName>
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, together with its sister genus
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<taxonomicName authorityName="Dunal, Monogr. Anon. 3: 79" authorityYear="1817" class="Magnoliopsida" family="Annonaceae" genus="Monodora" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Monodora" order="Magnoliales" pageId="0" pageNumber="1" phylum="Tracheophyta" rank="genus">
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<emphasis italics="true" pageId="0" pageNumber="1">Monodora</emphasis>
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</taxonomicName>
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, are unique in
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<taxonomicName authorityName="Dunal, Monogr. Anon. 3: 79" authorityYear="1817" family="Annonaceae" kingdom="Plantae" lsidName="" order="Magnoliales" pageId="0" pageNumber="1" rank="family">Annonaceae</taxonomicName>
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in having truly syncarpous flowers (fused carpels) and fruits. This translates into single fruits with unordered seeds, in contrast to other genera which have either uni- or biseriate placentation. Petals in
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<taxonomicName authorityName="Engl., Nat. Pflanzenfam. Nachtr. I: 161" authorityYear="1897" class="Magnoliopsida" family="Annonaceae" genus="Isolona" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Isolona" order="Magnoliales" pageId="0" pageNumber="1" phylum="Tracheophyta" rank="genus">
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<emphasis italics="true" pageId="0" pageNumber="1">Isolona</emphasis>
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</taxonomicName>
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are basally fused forming a clearly visible tube, with six equal lobes of equal length in a single whorl. In the vegetative state,
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<taxonomicName authorityName="Engl., Nat. Pflanzenfam. Nachtr. I: 161" authorityYear="1897" class="Magnoliopsida" family="Annonaceae" genus="Isolona" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Isolona" order="Magnoliales" pageId="0" pageNumber="1" phylum="Tracheophyta" rank="genus">
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<emphasis italics="true" pageId="0" pageNumber="1">Isolona</emphasis>
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</taxonomicName>
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and
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<taxonomicName authorityName="Dunal, Monogr. Anon. 3: 79" authorityYear="1817" class="Magnoliopsida" family="Annonaceae" genus="Monodora" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Monodora" order="Magnoliales" pageId="0" pageNumber="1" phylum="Tracheophyta" rank="genus">
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<emphasis italics="true" pageId="0" pageNumber="1">Monodora</emphasis>
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</taxonomicName>
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(together with
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<taxonomicName authorityName="Le Thomas, Adansonia ser. 2, 5: 451" authorityYear="1965" class="Magnoliopsida" family="Annonaceae" genus="Polyceratocarpus" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Polyceratocarpus pellegrinii" order="Magnoliales" pageId="0" pageNumber="1" phylum="Tracheophyta" rank="species" species="pellegrinii">
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<emphasis italics="true" pageId="0" pageNumber="1">Polyceratocarpus pellegrinii</emphasis>
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</taxonomicName>
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) are characterized by a raised midrib, in contrast to a sunken or flat midrib in all other genera found in Cameroon.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="1" type="taxonomy">
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<paragraph pageId="0" pageNumber="1">Taxonomy.</paragraph>
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<paragraph pageId="0" pageNumber="1">
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<bibRefCitation author="Couvreur, TLP" journalOrPublisher="Systematic Botany Monographs" pageId="0" pageNumber="1" pagination="1 - 150" refId="B100" refString="Couvreur, TLP, 2009. Monograph of the syncarpous African genera Isolona and Monodora (Annonaceae). Systematic Botany Monographs 87: 1 - 150" title="Monograph of the syncarpous African genera Isolona and Monodora (Annonaceae)." volume="87" year="2009">Couvreur (2009)</bibRefCitation>
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.
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</paragraph>
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</subSubSection>
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</treatment>
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</document> |