310 lines
25 KiB
XML
310 lines
25 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/phytokeys.46.9039" ID-PMC="PMC4391957" ID-Pensoft-Pub="1314-2003-46-61" ID-Pensoft-UUID="FF81FFEDFF9FFFAD393338172215F16D" ID-PubMed="25878549" ID-Zenodo-Dep="576269" ModsDocID="1314-2003-46-61" checkinTime="1451251577337" checkinUser="pensoft" docAuthor="Byng, James W., Florens, F. B. Vincent & Baider, Claudia" docDate="2015" docId="5183A74567CF44C2143895C972AC47B6" docLanguage="en" docName="PhytoKeys 46: 61-66" docOrigin="PhytoKeys 46" docPubDate="2015-02-05" docSource="http://dx.doi.org/10.3897/phytokeys.46.9039" docTitle="Syzygium pyneei Byng, V. Florens & Baider 2015, sp. nov." docType="treatment" docVersion="6" id="FF81FFEDFF9FFFAD393338172215F16D" lastPageNumber="65" masterDocId="FF81FFEDFF9FFFAD393338172215F16D" masterDocTitle="Syzygium pyneei (Myrtaceae), a new critically endangered endemic species from Mauritius" masterLastPageNumber="66" masterPageNumber="61" pageNumber="62" updateTime="1668141313741" 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>Syzygium pyneei (Myrtaceae), a new critically endangered endemic species from Mauritius</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>Byng, James W.</mods:namePart>
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<mods:affiliation>School of Biological Sciences, University of Aberdeen, Aberdeen, AB 24 3 UU, UK & Herbarium, Royal Botanic Gardens, Kew, Richmond, Surrey TW 9 3 AB, UK</mods:affiliation>
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<mods:nameIdentifier type="email">j.w.byng@abdn.ac.uk</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>Florens, F. B. Vincent</mods:namePart>
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<mods:affiliation>Department of Biosciences, University of Mauritius, Reduit, Mauritius</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>Baider, Claudia</mods:namePart>
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<mods:affiliation>The Mauritius Herbarium, Agricultural Services, Ministry of Agro-Industry and Food Security; R. E. Vaughan Building, Reduit, Mauritius</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>2015</mods:date>
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<mods:detail type="pubDate">
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<mods:number>2015-02-05</mods:number>
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</mods:detail>
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<mods:detail type="volume">
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<mods:number>46</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>61</mods:start>
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<mods:end>66</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.46.9039</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.46.9039</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1314-2003-46-61</mods:identifier>
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<mods:identifier type="Pensoft-UUID">FF81FFEDFF9FFFAD393338172215F16D</mods:identifier>
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<mods:identifier type="Zenodo-Dep">576269</mods:identifier>
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</mods:mods>
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<treatment ID-GBIF-Taxon="152025538" LSID="urn:lsid:plazi:treatment:5183A74567CF44C2143895C972AC47B6" httpUri="http://treatment.plazi.org/id/5183A74567CF44C2143895C972AC47B6" lastPageId="4" lastPageNumber="65" pageId="1" pageNumber="62">
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<subSubSection pageId="1" pageNumber="62" type="nomenclature">
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<paragraph pageId="1" pageNumber="62">
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<taxonomicName LSID="5183A745-67CF-44C2-1438-95C972AC47B6" authority="Byng, V. Florens & Baider" authorityName="Byng, V. Florens & Baider" authorityYear="2015" class="Magnoliopsida" family="Myrtaceae" genus="Syzygium" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Syzygium pyneei" order="Myrtales" pageId="1" pageNumber="62" phylum="Tracheophyta" rank="species" species="pyneei" status="sp. nov.">Syzygium pyneei Byng, V. Florens & Baider</taxonomicName>
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<taxonomicNameLabel pageId="1" pageNumber="62">sp. nov.</taxonomicNameLabel>
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<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Vegetative characters. A and B bark C close-up of branchlet D lower leaf surface E upper leaf surface F petioles G leaf venation. (A and G Byng 83; B-F Byng 84)." pageId="1" pageNumber="62">Figures 1</figureCitation>
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<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Floral and fruit characters. A and B Sole recorded images of flowering event C Close-up of dried inflorescence D Close-up of two fruits. (A-C D'Argent & Pynee MAU 25014; D D'Argent & K. Pynee MAU 26448; A and B courtesy of Kersley Pynee). Scale bar = 1 cm." pageId="1" pageNumber="62">, 2</figureCitation>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="1" pageNumber="62" type="type">
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<paragraph pageId="1" pageNumber="62">Type.</paragraph>
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<paragraph pageId="1" pageNumber="62">
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Mauritius, Mondrain Reserve, 30-35 m from main gate on left of path at
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<geoCoordinate degrees="20" direction="south" minutes="19.597" orientation="latitude" precision="1" value="-20.326616">20°19.597'S</geoCoordinate>
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;
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<geoCoordinate degrees="57" direction="east" minutes="27.241" orientation="longitude" precision="1" value="57.454018">57°27.241'E</geoCoordinate>
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, 24 Nov 2006, G.
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<normalizedToken originalValue="D’Argent">D'Argent</normalizedToken>
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& K. Pynee MAU 25014 (holotype: MAU! [MAU 0014027; spirit MAU 0014029 fl.buds, fl.]).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="1" pageNumber="62" type="diagnosis">
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<paragraph pageId="1" pageNumber="62">Diagnosis.</paragraph>
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<paragraph pageId="1" pageNumber="62">
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A cauliflorous species with relatively large flowers (> 2 cm long), light green to cream hypanthium, light pink stamens, short, thick petioles (4-8 mm long), and round, cuneate or sub-cordate to cordate leaf bases. The species could be confused with
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<taxonomicName authorityName="J. Gueho & A. J. Scott" authorityYear="1980" class="Magnoliopsida" family="Myrtaceae" genus="Syzygium" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Syzygium mauritianum" order="Myrtales" pageId="1" pageNumber="62" phylum="Tracheophyta" rank="species" species="mauritianum">
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<emphasis italics="true" pageId="1" pageNumber="62">Syzygium mauritianum</emphasis>
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</taxonomicName>
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but differs in the usually longer petioles, the variable leaf base and light green to cream hypanthium.
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<taxonomicName authorityName="Byng, V. Florens & Baider" authorityYear="2015" class="Magnoliopsida" family="Myrtaceae" genus="Syzygium" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Syzygium pyneei" order="Myrtales" pageId="1" pageNumber="62" phylum="Tracheophyta" rank="species" species="pyneei">
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<emphasis italics="true" pageId="1" pageNumber="62">Syzygium pyneei</emphasis>
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</taxonomicName>
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could also be confused with
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<taxonomicName class="Magnoliopsida" family="Myrtaceae" genus="Syzygium" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Syzygium cymosum" order="Myrtales" pageId="1" pageNumber="62" phylum="Tracheophyta" rank="species" species="cymosum">
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<emphasis italics="true" pageId="1" pageNumber="62">Syzygium cymosum</emphasis>
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</taxonomicName>
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but differs from the latter species in the light green hypanthium, sepals 4-5 mm long and coriaceous leaves.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="1" pageNumber="62" type="description">
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<paragraph pageId="1" pageNumber="62">Description.</paragraph>
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<paragraph pageId="1" pageNumber="62">
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Glabrous shrub to 3.5 m; bark grey to sometimes creamy-pink; branchlets terete, grey to reddish-brown.
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<emphasis italics="true" pageId="1" pageNumber="62">Leaves</emphasis>
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drying pale green above, light brown below; coriaceous, 10-15
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<normalizedToken originalValue="×">x</normalizedToken>
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4.5-9 cm, elliptic, oval-elliptic or oblong-elliptic, base round, cuneate or sub-cordate to cordate, apex acute to shortly acuminate, margin flat; 10-18 secondary vein pairs, 3-16 mm apart, prominent on both sides, tertiary veins few, faint; inner intramarginal vein 2-4 mm from leaf margin, outer intramarginal faint, 1-2 mm from leaf margin; petiole 4-8 mm long, robust, green when young, reddish-brown when old, 2-3 mm diameter.
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<emphasis italics="true" pageId="1" pageNumber="62">Inflorescences</emphasis>
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cauliflorous, ca. 6 cm long, axes terete, flowers up to 6, in clusters of 1-3; bracts and bracteoles deltoid, ca. 2 mm long, caducous.
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<emphasis italics="true" pageId="1" pageNumber="62">Flowers</emphasis>
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ca. 2 cm long; pseudostalk ca. 2 mm long; hypanthium 12-13
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<normalizedToken originalValue="×">x</normalizedToken>
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7-11 mm, pyriform, light green to cream; sepals 4-5
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<normalizedToken originalValue="×">x</normalizedToken>
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2-3 mm, obtusely triangular or obtuse; petals 8-9
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<normalizedToken originalValue="×">x</normalizedToken>
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ca. 6 mm, orbicular; stamens 12-15 mm long, light pink; anthers ca. 1 mm; ovules few per locule; style 7-18 mm long.
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<emphasis italics="true" pageId="1" pageNumber="62">Fruits</emphasis>
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pyriform, 20 mm long
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<normalizedToken originalValue="×">x</normalizedToken>
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larger diameter 15.8-19.3 mm and smaller diameter (near calyx disc) 12.5-14 mm; colour not recorded, surface with few hairs.
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<emphasis italics="true" pageId="1" pageNumber="62">Seeds</emphasis>
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1-2, globular when 1, half-moon shape when 2; 11.2-11.6 mm
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<normalizedToken originalValue="×">x</normalizedToken>
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10.7-12.3
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<normalizedToken originalValue="×">x</normalizedToken>
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11-11.5 mm when globular or same height but 10
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<normalizedToken originalValue="×">x</normalizedToken>
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6 mm diameter when half-moon shape, testa bullate; not seen fresh.
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</paragraph>
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<caption pageId="1" pageNumber="62" start="Figure 1" startId="F1">
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<paragraph pageId="1" pageNumber="62">
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<emphasis bold="true" pageId="1" pageNumber="62">Figure 1.</emphasis>
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Vegetative characters.
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<emphasis bold="true" pageId="1" pageNumber="62">A</emphasis>
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and
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<emphasis bold="true" pageId="1" pageNumber="62">B</emphasis>
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bark
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<emphasis bold="true" pageId="1" pageNumber="62">C</emphasis>
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close-up of branchlet
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<emphasis bold="true" pageId="1" pageNumber="62">D</emphasis>
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lower leaf surface
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<emphasis bold="true" pageId="1" pageNumber="62">E</emphasis>
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upper leaf surface
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<emphasis bold="true" pageId="1" pageNumber="62">F</emphasis>
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petioles
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<emphasis bold="true" pageId="1" pageNumber="62">G</emphasis>
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leaf venation. (
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<emphasis bold="true" pageId="1" pageNumber="62">A</emphasis>
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and
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<emphasis bold="true" pageId="1" pageNumber="62">G</emphasis>
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Byng 83;
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<emphasis bold="true" pageId="1" pageNumber="62">B-F</emphasis>
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Byng 84).
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</paragraph>
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</caption>
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</subSubSection>
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<subSubSection pageId="1" pageNumber="62" type="flowering and fruiting">
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<paragraph pageId="1" pageNumber="62">Flowering and fruiting.</paragraph>
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<paragraph pageId="1" pageNumber="62">
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The species was reportedly flowering for the first time in about 20 years (G.
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<normalizedToken originalValue="D’Argent">D'Argent</normalizedToken>
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pers. obs.) in November 2006. By 1 December 2006 most flowers (80%) were found on the ground and a few fruits were collected on 19 January 2007 after several visits monitoring the population.
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</paragraph>
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<caption pageId="1" pageNumber="62" start="Figure 2" startId="F2">
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<paragraph pageId="1" pageNumber="62">
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<emphasis bold="true" pageId="1" pageNumber="62">Figure 2.</emphasis>
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Floral and fruit characters.
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<emphasis bold="true" pageId="1" pageNumber="62">A</emphasis>
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and
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<emphasis bold="true" pageId="1" pageNumber="62">B</emphasis>
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Sole recorded images of flowering event
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<emphasis bold="true" pageId="1" pageNumber="62">C</emphasis>
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Close-up of dried inflorescence
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<emphasis bold="true" pageId="1" pageNumber="62">D</emphasis>
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Close-up of two fruits. (
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<emphasis bold="true" pageId="1" pageNumber="62">A-C</emphasis>
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<normalizedToken originalValue="D’Argent">D'Argent</normalizedToken>
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& Pynee MAU 25014;
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<emphasis bold="true" pageId="1" pageNumber="62">D</emphasis>
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<normalizedToken originalValue="D’Argent">D'Argent</normalizedToken>
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& K. Pynee MAU 26448;
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<emphasis bold="true" pageId="1" pageNumber="62">A</emphasis>
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and
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<emphasis bold="true" pageId="1" pageNumber="62">B</emphasis>
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courtesy of Kersley Pynee). Scale bar = 1 cm.
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</paragraph>
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</caption>
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</subSubSection>
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<subSubSection pageId="2" pageNumber="63" type="distribution">
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<paragraph pageId="2" pageNumber="63">
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<pageBreakToken pageId="2" pageNumber="63" start="start">Distribution</pageBreakToken>
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.
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</paragraph>
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<paragraph pageId="2" pageNumber="63">This species is only known from Mauritius, and has not been recorded outside Mondrain Reserve. Only two individuals have been recorded and no seedlings have been seen.</paragraph>
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</subSubSection>
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<subSubSection pageId="2" pageNumber="63" type="ecology">
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<paragraph pageId="2" pageNumber="63">Ecology.</paragraph>
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<paragraph pageId="2" pageNumber="63">This species grows in a ridge forest, not fully exposed to sun and wind, at an elevation of around 520 m.</paragraph>
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</subSubSection>
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<subSubSection pageId="3" pageNumber="64" type="etymology">
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<paragraph pageId="3" pageNumber="64">
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<pageBreakToken pageId="3" pageNumber="64" start="start">Etymology</pageBreakToken>
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.
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</paragraph>
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<paragraph pageId="3" pageNumber="64">
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<taxonomicName authorityName="Byng, V. Florens & Baider" authorityYear="2015" class="Magnoliopsida" family="Myrtaceae" genus="Syzygium" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Syzygium pyneei" order="Myrtales" pageId="3" pageNumber="64" phylum="Tracheophyta" rank="species" species="pyneei">
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<emphasis italics="true" pageId="3" pageNumber="64">Syzygium pyneei</emphasis>
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</taxonomicName>
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is named after Kersley Pynee who co-collected the type specimen and is a prominent local botanist.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="3" pageNumber="64" type="additional specimens examined">
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<paragraph pageId="3" pageNumber="64">Additional specimens examined.</paragraph>
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<paragraph pageId="3" pageNumber="64">
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MAURITIUS, Mondrain Reserve, 10 Nov 2006, G.
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<normalizedToken originalValue="D’Argent">D'Argent</normalizedToken>
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& K. Pynee MAU 25013 (MAU [0014026]); 01 Dec 2006, G.
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<normalizedToken originalValue="D’Argent">D'Argent</normalizedToken>
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& K. Pynee MAU 26447, fl., (spirit, MAU [0014026]); 19 Jan 2007, G.
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<normalizedToken originalValue="D’Argent">D'Argent</normalizedToken>
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& K. Pynee MAU 26448, fr., (spirit, MAU [0014030]); 31 Mar 2011, J.W. Byng 83 (K, MAU) & 84 (E, MAU).
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</paragraph>
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</subSubSection>
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<subSubSection lastPageId="4" lastPageNumber="65" pageId="3" pageNumber="64" type="discussion">
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<paragraph pageId="3" pageNumber="64">Discussion.</paragraph>
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<paragraph pageId="4" pageNumber="65">
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<taxonomicName authorityName="Byng, V. Florens & Baider" authorityYear="2015" class="Magnoliopsida" family="Myrtaceae" genus="Syzygium" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Syzygium pyneei" order="Myrtales" pageId="4" pageNumber="65" phylum="Tracheophyta" rank="species" species="pyneei">
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<emphasis italics="true" pageId="4" pageNumber="65">
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<pageBreakToken pageId="4" pageNumber="65" start="start">Syzygium</pageBreakToken>
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pyneei
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</emphasis>
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</taxonomicName>
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most closely resembles
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<taxonomicName class="Magnoliopsida" family="Myrtaceae" genus="Syzygium" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Syzygium cymosum" order="Myrtales" pageId="4" pageNumber="65" phylum="Tracheophyta" rank="species" species="cymosum">
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<emphasis italics="true" pageId="4" pageNumber="65">Syzygium cymosum</emphasis>
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</taxonomicName>
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(Lam.) DC., and
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<taxonomicName authorityName="J. Gueho & A. J. Scott" authorityYear="1980" class="Magnoliopsida" family="Myrtaceae" genus="Syzygium" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Syzygium mauritianum" order="Myrtales" pageId="4" pageNumber="65" phylum="Tracheophyta" rank="species" species="mauritianum">
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<emphasis italics="true" pageId="4" pageNumber="65">Syzygium mauritianum</emphasis>
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</taxonomicName>
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J.
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<normalizedToken originalValue="Guého">Gueho</normalizedToken>
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& A.J. Scott, sharing the cauliflorous habit, pinkish flowers and large leaves (≥ 10 cm long).
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<taxonomicName authorityName="J. Gueho & A. J. Scott" authorityYear="1980" class="Magnoliopsida" family="Myrtaceae" genus="Syzygium" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Syzygium mauritianum" order="Myrtales" pageId="4" pageNumber="65" phylum="Tracheophyta" rank="species" species="mauritianum">
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<emphasis italics="true" pageId="4" pageNumber="65">Syzygium mauritianum</emphasis>
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</taxonomicName>
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individuals have sessile to very short petioles (0-5 mm long), bright pinkish-red hypanthia, usually very large leaves ((10-)17-30 cm long) and strongly cordate leaf bases, in contrast to the 5-8 mm long petioles, light green to cream hypanthium and round, cuneate or sub-cordate to cordate leaf bases of
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<taxonomicName authorityName="Byng, V. Florens & Baider" authorityYear="2015" class="Magnoliopsida" family="Myrtaceae" genus="Syzygium" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Syzygium pyneei" order="Myrtales" pageId="4" pageNumber="65" phylum="Tracheophyta" rank="species" species="pyneei">
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<emphasis italics="true" pageId="4" pageNumber="65">Syzygium pyneei</emphasis>
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</taxonomicName>
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.
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<bibRefCitation author="Scott, AJ" journalOrPublisher="Flore des Mascareignes: La Reunion, Maurice, Rodrigues" pageId="5" pageNumber="66" refId="B5" refString="Scott, AJ, 1990. . Flore des Mascareignes: La Reunion, Maurice, Rodrigues 92" volume="92" year="1990">Scott (1990)</bibRefCitation>
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suggested
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<taxonomicName class="Magnoliopsida" family="Myrtaceae" genus="Syzygium" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Syzygium cymosum" order="Myrtales" pageId="4" pageNumber="65" phylum="Tracheophyta" rank="species" species="cymosum">
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<emphasis italics="true" pageId="4" pageNumber="65">Syzygium cymosum</emphasis>
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</taxonomicName>
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was probably extinct on Mauritius, as no specimens had been collected for many years, but extant on La
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<normalizedToken originalValue="Réunion">Reunion</normalizedToken>
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. Specimens of
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<taxonomicName authorityName="Byng, V. Florens & Baider" authorityYear="2015" class="Magnoliopsida" family="Myrtaceae" genus="Syzygium" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Syzygium pyneei" order="Myrtales" pageId="4" pageNumber="65" phylum="Tracheophyta" rank="species" species="pyneei">
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<emphasis italics="true" pageId="4" pageNumber="65">Syzygium pyneei</emphasis>
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||
</taxonomicName>
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were originally thought to be related to
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<taxonomicName class="Magnoliopsida" family="Myrtaceae" genus="Syzygium" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Syzygium cymosum" order="Myrtales" pageId="4" pageNumber="65" phylum="Tracheophyta" rank="species" species="cymosum">
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<emphasis italics="true" pageId="4" pageNumber="65">Syzygium cymosum</emphasis>
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</taxonomicName>
|
||
when the flowering individual was first seen but
|
||
<taxonomicName authorityName="Byng, V. Florens & Baider" authorityYear="2015" class="Magnoliopsida" family="Myrtaceae" genus="Syzygium" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Syzygium pyneei" order="Myrtales" pageId="4" pageNumber="65" phylum="Tracheophyta" rank="species" species="pyneei">
|
||
<emphasis italics="true" pageId="4" pageNumber="65">Syzygium pyneei</emphasis>
|
||
</taxonomicName>
|
||
differs by the light green to cream hypanthium (vs. light pink), sepals 4-5 mm long (vs. ca. 1 mm) and coriaceous leaves (vs. chartaceous).
|
||
</paragraph>
|
||
<paragraph pageId="4" pageNumber="65">
|
||
In addition, molecular data (Byng unpublished data) suggests
|
||
<taxonomicName authorityName="Byng, V. Florens & Baider" authorityYear="2015" class="Magnoliopsida" family="Myrtaceae" genus="Syzygium" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Syzygium pyneei" order="Myrtales" pageId="4" pageNumber="65" phylum="Tracheophyta" rank="species" species="pyneei">
|
||
<emphasis italics="true" pageId="4" pageNumber="65">Syzygium pyneei</emphasis>
|
||
</taxonomicName>
|
||
is most closely related to
|
||
<taxonomicName authorityName="Bosser & D. Florens" authorityYear="2000" class="Magnoliopsida" family="Myrtaceae" genus="Syzygium" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Syzygium guehoi" order="Myrtales" pageId="4" pageNumber="65" phylum="Tracheophyta" rank="species" species="guehoi">
|
||
<emphasis italics="true" pageId="4" pageNumber="65">Syzygium guehoi</emphasis>
|
||
</taxonomicName>
|
||
; morphologically both species have several-flowered, cauliflorous inflorescences and are distributed on the western part of the island. However,
|
||
<taxonomicName authorityName="Byng, V. Florens & Baider" authorityYear="2015" class="Magnoliopsida" family="Myrtaceae" genus="Syzygium" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Syzygium pyneei" order="Myrtales" pageId="4" pageNumber="65" phylum="Tracheophyta" rank="species" species="pyneei">
|
||
<emphasis italics="true" pageId="4" pageNumber="65">Syzygium pyneei</emphasis>
|
||
</taxonomicName>
|
||
has larger leaves, flowers and fruits and
|
||
<taxonomicName authorityName="Bosser & D. Florens" authorityYear="2000" class="Magnoliopsida" family="Myrtaceae" genus="Syzygium" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Syzygium guehoi" order="Myrtales" pageId="4" pageNumber="65" phylum="Tracheophyta" rank="species" species="guehoi">
|
||
<emphasis italics="true" pageId="4" pageNumber="65">Syzygium guehoi</emphasis>
|
||
</taxonomicName>
|
||
are much larger individuals, growing up to 15 m tall with conspicuous red petioles.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection pageId="4" pageNumber="65" type="conservation status">
|
||
<paragraph pageId="4" pageNumber="65">Conservation status.</paragraph>
|
||
<paragraph pageId="4" pageNumber="65">
|
||
This species is currently known from only two individuals. The population at Mondrain is protected within a private reserve of around 5 ha, which has been cleared of invasive alien plants and fenced against alien deer. Outside the fenced area, which is potential habitat for further individuals, the forest is dominated by alien plants, notably
|
||
<taxonomicName authorityName="Afzel. ex Sabine" authorityYear="1821" class="Magnoliopsida" family="Myrtaceae" genus="Psidium" higherTaxonomySource="IPNI" kingdom="Plantae" lsidName="Psidium cattleianum" order="Myrtales" pageId="4" pageNumber="65" phylum="Magnoliophyta" rank="species" species="cattleianum">
|
||
<emphasis italics="true" pageId="4" pageNumber="65">Psidium cattleianum</emphasis>
|
||
</taxonomicName>
|
||
Afzel. ex Sabine, the main invader in moist to wet forests of the island and a species known to be very detrimental to native plants on Mauritius (
|
||
<bibRefCitation author="Baider, C" journalOrPublisher="Biological Invasions" pageId="4" pageNumber="65" pagination="2641 - 2646" publicationUrl="10.1007/s10530-011-9980-3" refId="B1" refString="Baider, C, Florens, FBV, 2011. Control of invasive alien weeds averts imminent plant extinction. Biological Invasions 13: 2641 - 2646, DOI: 10.1007/s10530-011-9980-3" title="Control of invasive alien weeds averts imminent plant extinction." url="10.1007/s10530-011-9980-3" volume="13" year="2011">Baider and Florens 2011</bibRefCitation>
|
||
;
|
||
<bibRefCitation author="Monty, MLF" journalOrPublisher="Tropical Conservation Science" pageId="4" pageNumber="65" pagination="35 - 49" refId="B4" refString="Monty, MLF, Florens, FBV, Baider, C, 2013. Invasive alien plants elicit reduced production of flowers and fruits in various native forest species on the tropical island of Mauritius (Mascarenes, Indian Ocean). Tropical Conservation Science 6 (1): 35 - 49" title="Invasive alien plants elicit reduced production of flowers and fruits in various native forest species on the tropical island of Mauritius (Mascarenes, Indian Ocean)." volume="6" year="2013">Monty et al. 2013</bibRefCitation>
|
||
). The reserve is adjacent to deer grazing lands to the east.
|
||
<taxonomicName authorityName="Byng, V. Florens & Baider" authorityYear="2015" class="Magnoliopsida" family="Myrtaceae" genus="Syzygium" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Syzygium pyneei" order="Myrtales" pageId="4" pageNumber="65" phylum="Tracheophyta" rank="species" species="pyneei">
|
||
<emphasis italics="true" pageId="4" pageNumber="65">Syzygium pyneei</emphasis>
|
||
</taxonomicName>
|
||
should be considered Critically Endangered (CR C2a(i,ii); D) according to the IUCN Red List Criteria (
|
||
<bibRefCitation author="IUCN" journalOrPublisher="IUCN Species Survival Commission, Gland, Switzerland and Cambridge, United Kingdom" pageId="4" pageNumber="65" pagination="1 - 30" refId="B3" refString="IUCN, 2001. IUCN Red List Categories and Criteria, Version 3.1. IUCN Species Survival Commission, Gland, Switzerland and Cambridge, United Kingdom: 1 - 30" title="IUCN Red List Categories and Criteria, Version 3.1" year="2001">IUCN 2001</bibRefCitation>
|
||
).
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |