314 lines
26 KiB
XML
314 lines
26 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/phytokeys.111.27175" ID-GBIF-Dataset="13500248-7e73-479f-86fc-5d4a65b09676" ID-PMC="PMC6234225" ID-Pensoft-Pub="1314-2003-111-17" ID-Pensoft-UUID="FFC7FFCBFFE9FF8DFF892B49FFF67046" ID-PubMed="30473616" ID-Zenodo-Dep="1486316" ModsDocAuthor="" ModsDocDate="2018" ModsDocID="1314-2003-111-17" ModsDocOrigin="PhytoKeys " ModsDocTitle="Two new species of Raphia (Palmae/Arecaceae) from Cameroon and Gabon" checkinTime="1553125345584" checkinUser="pensoft" docAuthor="Kamga, Suzanne Mogue, Niangadouma, Raoul, Stauffer, Fred W., Bonaventure Sonke, & Couvreur, Thomas L. P." docDate="2018" docId="0262ED188BCACC0999D1745106167758" docLanguage="en" docName="PhytoKeys 111: 17-30" docOrigin="PhytoKeys 111" docSource="http://dx.doi.org/10.3897/phytokeys.111.27175" docTitle="Raphia gabonica Mogue, Sonke & Couvreur 2018, sp. nov." docType="treatment" docVersion="6" id="FFC7FFCBFFE9FF8DFF892B49FFF67046" lastPageNumber="19" masterDocId="FFC7FFCBFFE9FF8DFF892B49FFF67046" masterDocTitle="Two new species of Raphia (Palmae / Arecaceae) from Cameroon and Gabon" masterLastPageNumber="30" masterPageNumber="17" pageNumber="18" updateTime="1668139079806" 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>Two new species of Raphia (Palmae / Arecaceae) from Cameroon and Gabon</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>Kamga, Suzanne Mogue</mods:namePart>
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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>Niangadouma, Raoul</mods:namePart>
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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>Stauffer, Fred W.</mods:namePart>
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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>Bonaventure Sonke,</mods:namePart>
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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>Couvreur, Thomas L. P.</mods:namePart>
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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>2018</mods:date>
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<mods:detail type="volume">
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<mods:number>111</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>17</mods:start>
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<mods:end>30</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.111.27175</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.111.27175</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1314-2003-111-17</mods:identifier>
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<mods:identifier type="Pensoft-UUID">FFC7FFCBFFE9FF8DFF892B49FFF67046</mods:identifier>
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<mods:identifier type="Zenodo-Dep">1486316</mods:identifier>
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</mods:mods>
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<treatment ID-GBIF-Taxon="154472564" LSID="urn:lsid:plazi:treatment:0262ED188BCACC0999D1745106167758" httpUri="http://treatment.plazi.org/id/0262ED188BCACC0999D1745106167758" lastPageId="2" lastPageNumber="19" pageId="1" pageNumber="18">
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<subSubSection pageId="1" pageNumber="18" type="nomenclature">
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<paragraph pageId="1" pageNumber="18">
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<taxonomicName LSID="57E71E5E-6BA1-5AC5-90DE-D9EA36A5393F" authority="Mogue, Sonké & Couvreur" authorityName="Mogue, Sonke & Couvreur" authorityYear="2018" class="Liliopsida" family="Arecaceae" genus="Raphia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Raphia gabonica" order="Arecales" pageId="1" pageNumber="18" phylum="Tracheophyta" rank="species" species="gabonica" status="sp. nov.">
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Raphia gabonica Mogue,
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<normalizedToken originalValue="Sonké">Sonke</normalizedToken>
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& Couvreur
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</taxonomicName>
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<taxonomicNameLabel pageId="1" pageNumber="18">sp. nov.</taxonomicNameLabel>
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<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Raphia gabonica, illustrations. A Habit (bar = 1 m) B Details of trunk - notice curly fibres C Detail of full inflorescence D Detail of base of inflorescence E Penduncular bracts F Partial inflorescence with old flowers G Detail of basal part of rachillae with old female flower H Detail of apical part of rachillae with old male flowers (Scale bar: 1 cm) I Partial inflorescence with fruits J Fruit K Longitudinal section of fruit. Drawings based on A from Mogue 22 B-J Mogue 23. Drawings by Hans de Vries." figureDoi="10.3897/phytokeys.111.27175.figure1" httpUri="https://binary.pensoft.net/fig/240927" pageId="1" pageNumber="18">Figures 1</figureCitation>
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<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Raphia gabonica in natural habitat (Alembe, Gabon). Notice dry land habitat, not growing in colonies, single stem with curly fibres and long pendulous inflorescences. Photo: Thomas L. P. Couvreur." figureDoi="10.3897/phytokeys.111.27175.figure2" httpUri="https://binary.pensoft.net/fig/240928" pageId="1" pageNumber="18">, 2</figureCitation>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="1" pageNumber="18" type="materials_examined">
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<paragraph pageId="1" pageNumber="18">Type.</paragraph>
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<paragraph pageId="1" pageNumber="18">
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Gabon. Moyen
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<normalizedToken originalValue="Oogoué">Oogoue</normalizedToken>
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: 5 km from
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<normalizedToken originalValue="Alèmbé">Alembe</normalizedToken>
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on national road in the direction to la Lope,
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<geoCoordinate degrees="0.07916" direction="south" orientation="latitude" precision="1" value="-0.07916">0.07916S</geoCoordinate>
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,
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<geoCoordinate degrees="11.00836" direction="east" orientation="longitude" precision="1" value="11.00836">11.00836E</geoCoordinate>
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, 228 m a.s.l., 18 November 2015,
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<emphasis italics="true" pageId="1" pageNumber="18">Mogue K.S. 22</emphasis>
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(holotype: WAG; isotypes: LBV, YA).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="1" pageNumber="18" type="diagnosis">
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<paragraph pageId="1" pageNumber="18">Diagnosis.</paragraph>
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<paragraph pageId="1" pageNumber="18">
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<taxonomicName authorityName="Mogue, Sonke & Couvreur" authorityYear="2018" class="Liliopsida" family="Palmae" genus="Raphia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Raphia gabonica" order="Arecales" pageId="1" pageNumber="18" phylum="Tracheophyta" rank="species" species="gabonica">
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<emphasis italics="true" pageId="1" pageNumber="18">Raphia gabonica</emphasis>
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</taxonomicName>
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closely resembles
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<taxonomicName lsidName="R. gentiliana" pageId="1" pageNumber="18" rank="species" species="gentiliana">
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<emphasis italics="true" pageId="1" pageNumber="18">R. gentiliana</emphasis>
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</taxonomicName>
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by its solitary stem with curly fibres and the shape of the partial inflorescences.
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<taxonomicName authorityName="Mogue, Sonke & Couvreur" authorityYear="2018" class="Liliopsida" family="Palmae" genus="Raphia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Raphia gabonica" order="Arecales" pageId="1" pageNumber="18" phylum="Tracheophyta" rank="species" species="gabonica">
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<emphasis italics="true" pageId="1" pageNumber="18">Raphia gabonica</emphasis>
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</taxonomicName>
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differs from
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<taxonomicName lsidName="R. gentiliana" pageId="1" pageNumber="18" rank="species" species="gentiliana">
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<emphasis italics="true" pageId="1" pageNumber="18">R. gentiliana</emphasis>
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</taxonomicName>
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in being a mainly
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<emphasis italics="true" pageId="1" pageNumber="18">tierra firme</emphasis>
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species (vs. a swamp species), the shape of its fruits being globose, deltoid or ovoid (vs. ellipsoid) with 11 or 12 rows of scales (vs. 9-11) and a thick mesocarp measuring>8 mm.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="1" pageNumber="18" type="description">
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<paragraph pageId="1" pageNumber="18">Description.</paragraph>
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<paragraph pageId="1" pageNumber="18">
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<emphasis bold="true" italics="true" pageId="1" pageNumber="18">Stem</emphasis>
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3-7 m tall, 20-30 cm in diameter, solitary; dead leaf sheaths persistent; trunk covered by fibres and old leaf sheaths; fibres formed through disintegration of leaf sheath margins ca. 1-2 mm in diameter, curly, dark brown to grey.
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<emphasis bold="true" italics="true" pageId="1" pageNumber="18">Leaves</emphasis>
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7 or 8, 8-13 m long in total, horizontal, then arching downwards towards the apex;
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<emphasis bold="true" italics="true" pageId="1" pageNumber="18">sheath</emphasis>
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80-140 cm long, 15-30 cm wide basally, channelled, smooth, margin fibrous, light brown with black and grey spots;
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<emphasis bold="true" italics="true" pageId="1" pageNumber="18">petiole</emphasis>
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1.7-4 m long, 7-10 cm in diameter basally, channelled, smooth, brown with dark and grey spots, green at younger stages;
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<emphasis bold="true" italics="true" pageId="1" pageNumber="18">rachis</emphasis>
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5-7 m long, channelled basally and keeled towards the apex, smooth, no spines on keel, light brown to brown, spotted black and grey;
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<emphasis bold="true" italics="true" pageId="1" pageNumber="18">pinnae</emphasis>
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170-195 per side, irregularly arranged in 4 planes, arching downwards towards the apex, extreme basal pinnae 55-70 cm long, 1.2-1.3 wide, filiform, middle pinnae 1.10-1.20 m long, 4.5-5 cm wide, linear, apical pinnae 9-23 cm long, 0.6-2.4 cm wide, linear, midrib prominent adaxially, brown spines along pinnae midrib and margins, older pinnae bearing spines more basally, younger ones throughout the pinnae, pinnae adaxial surface dark green, abaxial surface waxy green. Leaves next to inflorescence reduced with split sheaths.
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<emphasis bold="true" italics="true" pageId="1" pageNumber="18">Inflorescences</emphasis>
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5, pendulous, 1.2-1.8 m long, 9 - 10 cm (young) to 30-35 cm (mature) in diameter at base (including rachillae); light brown to brown;
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<emphasis bold="true" italics="true" pageId="1" pageNumber="18">prophyll</emphasis>
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tubular, bearing 2 keels merging to form a pointed beak;
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<emphasis bold="true" italics="true" pageId="1" pageNumber="18">peduncle</emphasis>
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20-25 cm long, 7-8 cm in diameter, dorsi-ventrally compressed, smooth dark brown abaxially;
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<emphasis bold="true" italics="true" pageId="1" pageNumber="18">penduncular bracts</emphasis>
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8-20, tubular with triangular apices, smooth, dark brown abaxially;
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<emphasis bold="true" italics="true" pageId="1" pageNumber="18">rachis</emphasis>
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1.40-1.60 m long, bearing numerous bracts rarely empty, 50-70 first order rachillae, moniliform in shape, circular, alternating in 2 rows on each side of the rachis, smooth,
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<emphasis bold="true" italics="true" pageId="1" pageNumber="18">prophyllar bract</emphasis>
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at the base of first order rachillae, tubular, bearing 2 keels at the side, smooth;
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<emphasis bold="true" italics="true" pageId="1" pageNumber="18">basal first order rachillae</emphasis>
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30-40 m long, 1.5-2 cm in diameter excluding rachillae, 25-30 cm including second order rachillae, bud flattened; prophyllar bract at the base bearing 2 keels on both sides, other bracts bearing flowers, rarely empty; second order rachillae ca. 38 per side, basal second order rachillae 15-19 cm long, 0.3-0.5 cm in diameter, middle second order rachillae 9-12 cm long, 0.4-0.5 cm in diameter, apical second order rachillae 2.5-5 cm long, 0.3-0.4 cm in diameter, circular, alternating in 2 rows on each side of first order rachillae, bud 1.5-1.7 cm long, flattened, smooth;
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<emphasis bold="true" italics="true" pageId="1" pageNumber="18">middle first order rachillae</emphasis>
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27-30 cm long, 1.5-2 cm in diameter excluding rachillae, 20-22 cm including second order rachillae, bud flattened; prophyllar bract at the base bearing 2 keels on both sides, other bracts bearing flowers, rarely empty; second order rachillae ca. 33 per side, basal second order rachillae 14-15 cm long, ca. 0.5 cm in diameter, middle second order rachillae 8.5-9 cm long, ca. 0.5 cm in diameter, apical second order rachillae 2.5-3 cm long, ca. 0.5 cm in diameter, circular, alternating in 2 rows on each side of first order rachillae, bud flattened, smooth;
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<emphasis bold="true" italics="true" pageId="1" pageNumber="18">apical first order rachillae</emphasis>
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: 17-20 cm long, 1-1.5 cm in diameter excluding rachillae, 7-10 cm including second order rachillae, bud flattened; prophyllar bract at the base bearing 2 keels on both sides, other bracts bearing flowers rarely empty; second order rachillae 20 per side, basal second order rachillae 4-7 cm long, 0.2-0.3 cm in diameter, middle second order rachillae 4-5 cm long, 0.2-0.3 cm in diameter, apical second order rachillae 2.5-3.5 cm long, 0.2-0.3 cm in diameter, circular, alternating in 2 rows on each side of first order rachillae, bud flattened, smooth, light brown.
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<emphasis bold="true" italics="true" pageId="1" pageNumber="18">Flowers</emphasis>
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: only very old or very young flowers observed, solitary, exerted, arranged in one row (sometimes two) on each side of second order rachillae, staminate flowers distal, pistillate flowers basal, stamens 6.
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<emphasis bold="true" italics="true" pageId="1" pageNumber="18">Fruit</emphasis>
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: ca. 4 cm long, 3.5 cm in diameter, beak 0.5 cm; globose, deltoid or ovoid; scales arranged in 11 or 12 rows, shallowly furrowed, dark green to brown when young, turning orange-red at maturity; mesocarp ca. 0.8 cm thick, yellow; seeds 1-3, circular covered in a white coating.
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</paragraph>
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<caption ID-Zenodo-Dep="1486368" doi="10.3897/phytokeys.111.27175.figure1" httpUri="https://binary.pensoft.net/fig/240927" pageId="1" pageNumber="18" start="Figure 1" startId="F1">
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<paragraph pageId="1" pageNumber="18">
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<emphasis bold="true" pageId="1" pageNumber="18">Figure 1.</emphasis>
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<taxonomicName authorityName="Mogue, Sonke & Couvreur" authorityYear="2018" class="Liliopsida" family="Palmae" genus="Raphia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Raphia gabonica" order="Arecales" pageId="1" pageNumber="18" phylum="Tracheophyta" rank="species" species="gabonica">
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<emphasis italics="true" pageId="1" pageNumber="18">Raphia gabonica</emphasis>
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</taxonomicName>
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, illustrations.
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<emphasis bold="true" pageId="1" pageNumber="18">A</emphasis>
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Habit (bar = 1 m)
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<emphasis bold="true" pageId="1" pageNumber="18">B</emphasis>
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Details of trunk - notice curly fibres
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<emphasis bold="true" pageId="1" pageNumber="18">C</emphasis>
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Detail of full inflorescence
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<emphasis bold="true" pageId="1" pageNumber="18">D</emphasis>
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Detail of base of inflorescence
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<emphasis bold="true" pageId="1" pageNumber="18">E</emphasis>
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Penduncular bracts
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<emphasis bold="true" pageId="1" pageNumber="18">F</emphasis>
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Partial inflorescence with old flowers
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<emphasis bold="true" pageId="1" pageNumber="18">G</emphasis>
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Detail of basal part of rachillae with old female flower
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<emphasis bold="true" pageId="1" pageNumber="18">H</emphasis>
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Detail of apical part of rachillae with old male flowers (Scale bar: 1 cm)
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<emphasis bold="true" pageId="1" pageNumber="18">I</emphasis>
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Partial inflorescence with fruits
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<emphasis bold="true" pageId="1" pageNumber="18">J</emphasis>
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Fruit
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<emphasis bold="true" pageId="1" pageNumber="18">K</emphasis>
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Longitudinal section of fruit. Drawings based on
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<emphasis bold="true" pageId="1" pageNumber="18">A</emphasis>
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from Mogue 22
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<emphasis bold="true" pageId="1" pageNumber="18">
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<normalizedToken originalValue="B–J">B-J</normalizedToken>
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</emphasis>
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Mogue 23. Drawings by Hans de Vries.
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</paragraph>
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</caption>
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<caption ID-Zenodo-Dep="1486370" doi="10.3897/phytokeys.111.27175.figure2" httpUri="https://binary.pensoft.net/fig/240928" pageId="1" pageNumber="18" start="Figure 2" startId="F2">
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<paragraph pageId="1" pageNumber="18">
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<emphasis bold="true" pageId="1" pageNumber="18">Figure 2.</emphasis>
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<taxonomicName authorityName="Mogue, Sonke & Couvreur" authorityYear="2018" class="Liliopsida" family="Palmae" genus="Raphia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Raphia gabonica" order="Arecales" pageId="1" pageNumber="18" phylum="Tracheophyta" rank="species" species="gabonica">
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<emphasis italics="true" pageId="1" pageNumber="18">Raphia gabonica</emphasis>
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</taxonomicName>
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in natural habitat (
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<normalizedToken originalValue="Alèmbé">Alembe</normalizedToken>
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, Gabon). Notice dry land habitat, not growing in colonies, single stem with curly fibres and long pendulous inflorescences. Photo: Thomas L.P. Couvreur.
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</paragraph>
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</caption>
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</subSubSection>
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<subSubSection pageId="1" pageNumber="18" type="ecology">
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<paragraph pageId="1" pageNumber="18">Ecology.</paragraph>
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<paragraph pageId="1" pageNumber="18">
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<taxonomicName authorityName="Mogue, Sonke & Couvreur" authorityYear="2018" class="Liliopsida" family="Palmae" genus="Raphia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Raphia gabonica" order="Arecales" pageId="1" pageNumber="18" phylum="Tracheophyta" rank="species" species="gabonica">
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<emphasis italics="true" pageId="1" pageNumber="18">Raphia gabonica</emphasis>
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</taxonomicName>
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occurs in lowland rain forests, growing on hill sides on
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<emphasis italics="true" pageId="1" pageNumber="18">tierra firme</emphasis>
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and also near streams. Seen occurring together with
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<taxonomicName class="Liliopsida" family="Arecaceae" genus="Sclerosperma" higherTaxonomySource="GBIF,CoL" kingdom="Plantae" lsidName="Sclerosperma mannii" order="Arecales" pageId="1" pageNumber="18" phylum="Tracheophyta" rank="species" species="mannii">
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<emphasis italics="true" pageId="1" pageNumber="18">Sclerosperma mannii</emphasis>
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</taxonomicName>
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H.Wendl. and
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<taxonomicName class="Liliopsida" family="Arecaceae" genus="Elaeis" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="Elaeis guineensis" order="Arecales" pageId="1" pageNumber="18" phylum="Magnoliophyta" rank="species" species="guineensis">
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<emphasis italics="true" pageId="1" pageNumber="18">Elaeis guineensis</emphasis>
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</taxonomicName>
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A.Chev.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="1" pageNumber="18" type="distribution">
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<paragraph pageId="1" pageNumber="18">Distribution.</paragraph>
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<paragraph pageId="1" pageNumber="18">
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Lower Guinea subcentre of endemism (
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<bibRefCitation DOI="https://doi.org/10.2307/3667815" author="White, F" journalOrPublisher="Nigerian Field" pageId="8" pageNumber="25" refId="B16" refString="White, F, 1979. The Guineo-Congolian Region and its relationship to other phytochoria. Bulletin du Jardin Botanique National de Belgique 49(1/2): 11-55. https://doi.org/10.2307/3667815" title="The Guineo-Congolian Region and its relationship to other phytochoria. Bulletin du Jardin Botanique National de Belgique 49 (1 / 2): 11 - 55." url="https://doi.org/10.2307/3667815" year="1979">White 1979</bibRefCitation>
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).
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<taxonomicName authorityName="Mogue, Sonke & Couvreur" authorityYear="2018" class="Liliopsida" family="Palmae" genus="Raphia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Raphia gabonica" order="Arecales" pageId="1" pageNumber="18" phylum="Tracheophyta" rank="species" species="gabonica">
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<emphasis italics="true" pageId="1" pageNumber="18">Raphia gabonica</emphasis>
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</taxonomicName>
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is restricted to the northern part of the
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<normalizedToken originalValue="Ngounié">Ngounie</normalizedToken>
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region in Gabon occurring in very small populations in forests. Altitude 76-228 m (Fig.
|
||
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Distribution of Raphia gabonica and R. zamiana." figureDoi="10.3897/phytokeys.111.27175.figure3" httpUri="https://binary.pensoft.net/fig/240929" pageId="1" pageNumber="18">3</figureCitation>
|
||
).
|
||
</paragraph>
|
||
<caption ID-Zenodo-Dep="1486372" doi="10.3897/phytokeys.111.27175.figure3" httpUri="https://binary.pensoft.net/fig/240929" pageId="1" pageNumber="18" start="Figure 3" startId="F3">
|
||
<paragraph pageId="1" pageNumber="18">
|
||
<emphasis bold="true" pageId="1" pageNumber="18">Figure 3.</emphasis>
|
||
Distribution of
|
||
<taxonomicName authorityName="Mogue, Sonke & Couvreur" authorityYear="2018" class="Liliopsida" family="Palmae" genus="Raphia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Raphia gabonica" order="Arecales" pageId="1" pageNumber="18" phylum="Tracheophyta" rank="species" species="gabonica">
|
||
<emphasis italics="true" pageId="1" pageNumber="18">Raphia gabonica</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName lsidName="R. zamiana" pageId="1" pageNumber="18" rank="species" species="zamiana">
|
||
<emphasis italics="true" pageId="1" pageNumber="18">R. zamiana</emphasis>
|
||
</taxonomicName>
|
||
.
|
||
</paragraph>
|
||
</caption>
|
||
</subSubSection>
|
||
<subSubSection pageId="1" pageNumber="18" type="preliminary conservation status">
|
||
<paragraph pageId="1" pageNumber="18">Preliminary conservation status.</paragraph>
|
||
<paragraph pageId="1" pageNumber="18">
|
||
<emphasis bold="true" pageId="1" pageNumber="18">Endangered</emphasis>
|
||
:
|
||
<emphasis bold="true" pageId="1" pageNumber="18">EN B2ab(ii)</emphasis>
|
||
:
|
||
<taxonomicName authorityName="Mogue, Sonke & Couvreur" authorityYear="2018" class="Liliopsida" family="Palmae" genus="Raphia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Raphia gabonica" order="Arecales" pageId="1" pageNumber="18" phylum="Tracheophyta" rank="species" species="gabonica">
|
||
<emphasis italics="true" pageId="1" pageNumber="18">Raphia gabonica</emphasis>
|
||
</taxonomicName>
|
||
is a rare species collected from two close locations in central Gabon (Fig.
|
||
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Distribution of Raphia gabonica and R. zamiana." figureDoi="10.3897/phytokeys.111.27175.figure3" httpUri="https://binary.pensoft.net/fig/240929" pageId="1" pageNumber="18">3</figureCitation>
|
||
). Its minimal area of occupancy (AOO) is estimated to be 8 km2 (within the limits for Critically Endangered status under criterion B2). To date, two locations are known within the limits of the Endangered status. Both collections were made recently (2015) along important road axes (e.g. Nationale 1) and in unprotected areas (Fig.
|
||
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Distribution of Raphia gabonica and R. zamiana." figureDoi="10.3897/phytokeys.111.27175.figure3" httpUri="https://binary.pensoft.net/fig/240929" pageId="1" pageNumber="18">3</figureCitation>
|
||
). For each location, several individuals were seen indicating no immediate threat. However, we project that the ongoing loss of its natural habitat linked to increased human activity will induce an important decline of its EOO and AOO.
|
||
<taxonomicName authorityName="Mogue, Sonke & Couvreur" authorityYear="2018" class="Liliopsida" family="Palmae" genus="Raphia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Raphia gabonica" order="Arecales" pageId="1" pageNumber="18" phylum="Tracheophyta" rank="species" species="gabonica">
|
||
<emphasis italics="true" pageId="1" pageNumber="18">Raphia gabonica</emphasis>
|
||
</taxonomicName>
|
||
is therefore assigned a preliminary status of EN B2ab(ii), joining the almost 5% of continental African palms under this category (
|
||
<bibRefCitation DOI="https://doi.org/10.1016/j.biocon.2018.02.025" author="Cosiaux, A" journalOrPublisher="Biological Conservation" pageId="8" pageNumber="25" pagination="323 - 333" refId="B4" refString="Cosiaux, A, Gardiner, LM, Stauffer, FW, Bachman, SP, Sonke, B, Baker, WJ, Couvreur, TLP, 2018. Low extinction risk for an important plant resource: Conservation assessments of continental African palms (Arecaceae / Palmae). Biological Conservation 221: 323 - 333, DOI: https://doi.org/10.1016/j.biocon.2018.02.025" title="Low extinction risk for an important plant resource: Conservation assessments of continental African palms (Arecaceae / Palmae)." url="https://doi.org/10.1016/j.biocon.2018.02.025" volume="221" year="2018">Cosiaux et al. 2018</bibRefCitation>
|
||
)
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection pageId="1" pageNumber="18" type="uses">
|
||
<paragraph pageId="1" pageNumber="18">Uses.</paragraph>
|
||
<paragraph pageId="1" pageNumber="18">No uses have been reported for this species.</paragraph>
|
||
</subSubSection>
|
||
<subSubSection pageId="1" pageNumber="18" type="notes">
|
||
<paragraph pageId="1" pageNumber="18">Notes.</paragraph>
|
||
<paragraph pageId="1" pageNumber="18">
|
||
<taxonomicName authorityName="Mogue, Sonke & Couvreur" authorityYear="2018" class="Liliopsida" family="Palmae" genus="Raphia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Raphia gabonica" order="Arecales" pageId="1" pageNumber="18" phylum="Tracheophyta" rank="species" species="gabonica">
|
||
<emphasis italics="true" pageId="1" pageNumber="18">Raphia gabonica</emphasis>
|
||
</taxonomicName>
|
||
appears to belong to the moniliform section of
|
||
<bibRefCitation author="Otedoh, M" journalOrPublisher="Journal of the Nigerian Institute for Oil Palm Research" pageId="8" pageNumber="25" pagination="145 - 189" refId="B11" refString="Otedoh, M, 1982. A revision of the genus Raphia Beauv. (Palmae). Journal of the Nigerian Institute for Oil Palm Research 6: 145 - 189" title="A revision of the genus Raphia Beauv. (Palmae)." volume="6" year="1982">Otedoh (1982)</bibRefCitation>
|
||
linked to the shape of its partial inflorescences. However, the solitary trunk with curly fibres could also suggest a resemblance to species within the temulentae section (e.g.
|
||
<taxonomicName class="Liliopsida" family="Palmae" genus="Raphia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Raphia hookeri" order="Arecales" pageId="1" pageNumber="18" phylum="Tracheophyta" rank="species" species="hookeri">
|
||
<emphasis italics="true" pageId="1" pageNumber="18">Raphia hookeri</emphasis>
|
||
</taxonomicName>
|
||
G.Mann & H.Wendl. or
|
||
<taxonomicName lsidName="R. sese" pageId="1" pageNumber="18" rank="species" species="sese">
|
||
<emphasis italics="true" pageId="1" pageNumber="18">R. sese</emphasis>
|
||
</taxonomicName>
|
||
De Wild.).
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection pageId="2" pageNumber="19" type="additional specimen examined">
|
||
<paragraph pageId="2" pageNumber="19">
|
||
<pageBreakToken pageId="2" pageNumber="19" start="start">Additional</pageBreakToken>
|
||
specimen examined.
|
||
</paragraph>
|
||
<paragraph pageId="2" pageNumber="19">
|
||
<emphasis bold="true" pageId="2" pageNumber="19">Gabon</emphasis>
|
||
.
|
||
<normalizedToken originalValue="Ngounié">Ngounie</normalizedToken>
|
||
: Zamata village along national road N1,
|
||
<geoCoordinate degrees="1.03044" direction="south" orientation="latitude" precision="1" value="-1.03044">1.03044S</geoCoordinate>
|
||
,
|
||
<geoCoordinate degrees="10.51881" direction="east" orientation="longitude" precision="1" value="10.51881">10.51881E</geoCoordinate>
|
||
, 76 m a.s.l., 19 Nov 2015,
|
||
<emphasis italics="true" pageId="2" pageNumber="19">Mogue K.S. 23</emphasis>
|
||
(LBV, WAG,).
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |