207 lines
16 KiB
XML
207 lines
16 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/phytokeys.224.101201" ID-Pensoft-Pub="1314-2003-224-175" ID-Pensoft-UUID="EEB2B464BC755AF794DE948ED5951003" ModsDocID="1314-2003-224-175" checkinTime="1680939000282" checkinUser="pensoft" docAuthor="Thai Vinh, Tran, Van Duy, Nong, Thanh Truong, Hoang & Van Tien, Tran" docDate="2023" docId="082E73E232EA5C749ED640C789B37AC1" docLanguage="en" docName="PhytoKeys 224: 175-182" docOrigin="PhytoKeys 224" docPubDate="2023-04-07" docSource="http://dx.doi.org/10.3897/phytokeys.224.101201" docTitle="Yersinochloa nghiana V. T. Tran 2023, sp. nov." docType="treatment" docVersion="1" id="EEB2B464BC755AF794DE948ED5951003" lastPageNumber="175" masterDocId="EEB2B464BC755AF794DE948ED5951003" masterDocTitle="Yersinochloa nghiana, a new species (Poaceae, Bambusoideae, Bambuseae) from southern Vietnam" masterLastPageNumber="182" masterPageNumber="175" pageNumber="175" updateTime="1680939000282" 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>Yersinochloa nghiana, a new species (Poaceae, Bambusoideae, Bambuseae) from southern Vietnam</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>Thai Vinh, Tran</mods:namePart>
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<mods:affiliation>Taynguyen Institute for Scientific Research, Vietnam Academy of Science and Technology, Dalat, Vietnam & Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Hanoi, Vietnam</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>Van Duy, Nong</mods:namePart>
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<mods:affiliation>Taynguyen Institute for Scientific Research, Vietnam Academy of Science and Technology, Dalat, Vietnam & Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Hanoi, Vietnam</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>Thanh Truong, Hoang</mods:namePart>
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<mods:affiliation>Vietnam Forest Science Institute of Central Highlands and South of Central Vietnam, Vietnam Academy of Forest Science, Dalat, Lam Dong Province, Vietnam</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>Van Tien, Tran</mods:namePart>
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<mods:affiliation>Dalat University, Dalat, Lam Dong Province, Vietnam</mods:affiliation>
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<mods:nameIdentifier type="email">tientv@dlu.edu.vn</mods:nameIdentifier>
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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>2023</mods:date>
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<mods:detail type="pubDate">
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<mods:number>2023-04-07</mods:number>
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</mods:detail>
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<mods:detail type="volume">
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<mods:number>224</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>175</mods:start>
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<mods:end>182</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.224.101201</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.224.101201</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1314-2003-224-175</mods:identifier>
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<mods:identifier type="Pensoft-UUID">EEB2B464BC755AF794DE948ED5951003</mods:identifier>
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</mods:mods>
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<treatment LSID="urn:lsid:plazi:treatment:082E73E232EA5C749ED640C789B37AC1" httpUri="http://treatment.plazi.org/id/082E73E232EA5C749ED640C789B37AC1" lastPageNumber="175" pageId="0" pageNumber="175">
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<subSubSection pageId="0" pageNumber="175" type="nomenclature">
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<paragraph pageId="0" pageNumber="175">
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<taxonomicName LSID="082E73E2-32EA-5C74-9ED6-40C789B37AC1" authority="V. T. Tran" authorityName="V. T. Tran" authorityYear="2023" class="Liliopsida" family="Poaceae" genus="Yersinochloa" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Yersinochloa nghiana" order="Poales" pageId="0" pageNumber="175" phylum="Tracheophyta" rank="species" species="nghiana" status="sp. nov.">Yersinochloa nghiana V.T.Tran</taxonomicName>
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<taxonomicNameLabel pageId="0" pageNumber="175">sp. nov.</taxonomicNameLabel>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="175" type="description">
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<paragraph pageId="0" pageNumber="175">
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<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Yersinochloa nghiana V. T. Tran: A habitat B clump C, D shoots E culm leaf (dorsal view) F, G auricles H culm leaf swollen at the base I leafy branch J, K section of leafy branch L branches several with middle one dominant. Photos by Tran Van Tien from type locality." figureDoi="10.3897/phytokeys.224.101201.figure1" httpUri="https://binary.pensoft.net/fig/834724" pageId="0" pageNumber="175">Figs 1</figureCitation>
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<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Yersinochloa nghiana V. T. Tran: A-C inflorescence terminating at leafy branches D, E pseudo-spikelets F, G perfect florets H rachilla internode I, J prophyllate bud keeled K lemma L lemma (dorsal view) M palea with rachilla extension N palea (dorsal view) with rachilla extension O stigmas P lodicules Q stamens R caryopsis S fruit. Photos by Tran Van Tien from type locality." figureDoi="10.3897/phytokeys.224.101201.figure2" httpUri="https://binary.pensoft.net/fig/834725" pageId="0" pageNumber="175">, 2</figureCitation>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="175" type="diagnosis">
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<paragraph pageId="0" pageNumber="175">Diagnosis.</paragraph>
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<paragraph pageId="0" pageNumber="175">
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<taxonomicName genus="Yersinnochloa" lsidName="Yersinnochloa nghiana" pageId="0" pageNumber="175" rank="species" species="nghiana">
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<emphasis italics="true" pageId="0" pageNumber="175">Yersinnochloa nghiana</emphasis>
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</taxonomicName>
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is morphologically most similar to
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<taxonomicName lsidName="Y. dalatensis" pageId="0" pageNumber="175" rank="species" species="dalatensis">
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<emphasis italics="true" pageId="0" pageNumber="175">Y. dalatensis</emphasis>
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</taxonomicName>
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and
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<taxonomicName class="Liliopsida" family="Gramineae" genus="Cochinchinochloa" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="Cochinchinochloa braiana" order="Poales" pageId="0" pageNumber="175" phylum="Magnoliophyta" rank="species" species="braiana">
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<emphasis italics="true" pageId="0" pageNumber="175">Cochinchinochloa braiana</emphasis>
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</taxonomicName>
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with culms and branches scrambling or hanging over nearby vegetation or trees, lodicules 3, stamens 6, filaments free, caryopsis oblique, with a relatively thin pericarp. However,
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<taxonomicName lsidName="Y. nghiana" pageId="0" pageNumber="175" rank="species" species="nghiana">
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<emphasis italics="true" pageId="0" pageNumber="175">Y. nghiana</emphasis>
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</taxonomicName>
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is distinguished from
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<taxonomicName lsidName="Y. dalatensis" pageId="0" pageNumber="175" rank="species" species="dalatensis">
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<emphasis italics="true" pageId="0" pageNumber="175">Y. dalatensis</emphasis>
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</taxonomicName>
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by culm nodes with a thick swollen patella (vs. culm nodes without a thick swollen patella), culm-leaves blade erect (vs. reflexed), auricles conspicuous (vs. auricles absent). It also differs from
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<taxonomicName class="Liliopsida" family="Gramineae" genus="Cochinchinochloa" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="Cochinchinochloa braiana" order="Poales" pageId="0" pageNumber="175" phylum="Magnoliophyta" rank="species" species="braiana">
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<emphasis italics="true" pageId="0" pageNumber="175">Cochinchinochloa braiana</emphasis>
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</taxonomicName>
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in culm-leaves blade half embracing the internode (vs. culm-leaves blade embracing the entire internode), a terminal vestigial flower absent (vs. a terminal vestigal flower 1), perfect florets 1 (vs. perfect florets 2), anther apices bearing tiny spines (vs. anther absent tiny spines).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="175" type="materials_examined">
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<paragraph pageId="0" pageNumber="175">
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<typeStatus>Type</typeStatus>
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.
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</paragraph>
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<paragraph pageId="0" pageNumber="175">
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<materialsCitation collectingDate="2022-09-10" collectorName="Brain Mountain, E, V. T. Tran" country="Vietnam" elevation="1216" latitude="11.456944" location="Brain Mountain" longLatPrecision="21" longitude="108.06139" municipality="Di Linh District" specimenCount="1" stateProvince="Lam Dong Province" typeStatus="holotype">
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<collectingCountry name="Vietnam">Vietnam</collectingCountry>
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.
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<collectingRegion country="Vietnam" name="Lam Dong">Lam Dong Province</collectingRegion>
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,
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<collectingMunicipality>Di Linh District</collectingMunicipality>
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,
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<collectorName>
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<location LSID="urn:lsid:plazi:treatment:082E73E232EA5C749ED640C789B37AC1:85AA001C8EEE0D9F5E82430A44A44696" country="Vietnam" latitude="11.456944" longLatPrecision="21" longitude="108.06139" municipality="Di Linh District" name="Brain Mountain" stateProvince="Lam Dong Province">Brain Mountain</location>
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, E
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</collectorName>
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,
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<elevation metricMagnitude="3" metricUnit="m" metricValue="1.216" unit="m" value="1216.0">
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<quantity metricMagnitude="3" metricUnit="m" metricValue="1.216" unit="m" value="1216.0">1216 m</quantity>
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a.s.l.
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</elevation>
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,
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<geoCoordinate degrees="11" direction="north" minutes="27" orientation="latitude" precision="15" seconds="25" value="11.456944">11°27'25"N</geoCoordinate>
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,
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<geoCoordinate degrees="108" direction="east" minutes="3" orientation="longitude" precision="15" seconds="41" value="108.06139">108°3'41"E</geoCoordinate>
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,
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<collectingDate value="2022-09-10">10 Sep 2022</collectingDate>
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,
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<emphasis italics="true" pageId="0" pageNumber="175">
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<collectorName>V. T. Tran</collectorName>
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DLU 0463
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</emphasis>
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(
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<typeStatus>holotype</typeStatus>
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DLU!; isotype VNMN!, VTN!)
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</materialsCitation>
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.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="175" type="description">
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<paragraph pageId="0" pageNumber="175">Description.</paragraph>
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<paragraph pageId="0" pageNumber="175">
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Culms and branches scrambling or hanging over nearby vegetation or trees, 5-10 m tall; internodes 40-80 cm long and 3.5-4.5 cm in diameter; when young, densely covered with appressed white hairs; culm walls 0.8-1.0 mm thick; nodes with a thick swollen patella. Branches several with middle one dominant, elongating. Culm leaves black-purplish, sheath with dense appressed white hairs on the abaxial surface; 25-28 cm long and 10-12 cm wide at base; apex 7-8 cm wide and truncate; margins bearing dense white-brown hairs; leaf blades erect, swollen at the base, tardily deciduous, purple-black, 20-25
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<normalizedToken originalValue="×">x</normalizedToken>
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4-5 cm, abaxially with dense white hairs at the base; auricles conspicuous, 2.0-2.2
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<normalizedToken originalValue="×">x</normalizedToken>
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0.2-0.3 cm; ligule short, ca. 1 mm, entire. Leafy branches bearing 5-6 leaves, foliage leafy branches distichously arranged along its length; foliage leaf blades wedge-shaped, 25-28
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<normalizedToken originalValue="×">x</normalizedToken>
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4.0-4.5 cm, acute or cuneate-obovoid at base, glabrous; veins 15-18 pairs; sheaths with ciliate margins, auricles with dense bristles 3-5 mm long; inner ligule a low rim, ca. 1 mm; pseudo-petiole ca. 5-6 mm length. Inflorescences terminating at leafy branches, indeterminate; pseudo-spikelets typically 2.2-2.0 cm long; each subtended by a prophyllate bud, keeled, with ciliate margins, 2.0-2.2
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<normalizedToken originalValue="×">x</normalizedToken>
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0.6-0.8 mm and consisting of one glume, one perfect floret. Rachilla internode below fertile floret ca. 0.5 cm. Fertile floret 1.0-1.2
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<normalizedToken originalValue="×">x</normalizedToken>
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0.2-0.4 cm; lemma oblong lanceolate, 1.0-1.2
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<normalizedToken originalValue="×">x</normalizedToken>
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0.5-0.6 cm, veins 7-9, at apex acute with 0.2 mm long, margins and adaxial side bearing dense white cilia; palea glabrous, distally obviously grooved, dorsal view showing rachilla extension and a rudimentary floret at apex, 1.0-1.2
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<normalizedToken originalValue="×">x</normalizedToken>
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0.5-0.6 cm, acute at apex, base spirally involute; lodicules 3, obovate or oblong, acute at apex, purple, ca. 0.2-0.3
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<normalizedToken originalValue="×">x</normalizedToken>
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0.1-0.2 mm, with ciliate margins, bifid at base. Stamens 6; filaments free, 1.0-1.2 cm; anther ca. 1 mm, purple, apices bearing 3 tiny spines, ca. 1 mm. Ovary green, glabrous with a long style, 1.2-1.0 cm; stigmas 3, purple; caryopsis oblique, with a relatively thin pericarp, 0.9 -1.0
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<normalizedToken originalValue="×">x</normalizedToken>
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0.1-0.2 cm, with a long style, ca. 1.3 cm.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="175" type="distribution">
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<paragraph pageId="0" pageNumber="175">Distribution and habitat.</paragraph>
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<paragraph pageId="0" pageNumber="175">
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<taxonomicName authorityName="V. T. Tran" authorityYear="2023" class="Liliopsida" family="Gramineae" genus="Yersinochloa" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Yersinochloa nghiana" order="Poales" pageId="0" pageNumber="175" phylum="Tracheophyta" rank="species" species="nghiana">
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<emphasis italics="true" pageId="0" pageNumber="175">Yersinochloa nghiana</emphasis>
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</taxonomicName>
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grows in degraded natural forest in valleys, but is also common along rivers and valleys, between 1100 and 1130 m a.s.l., in Braian Mountain, Di Linh District, Lam Dong Province, Vietnam.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="175" type="phenology">
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<paragraph pageId="0" pageNumber="175">Phenology.</paragraph>
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<paragraph pageId="0" pageNumber="175">The plants were found flowering in December 2007. New shoots developed in June to August.</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="175" type="local uses">
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<paragraph pageId="0" pageNumber="175">Local uses.</paragraph>
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<paragraph pageId="0" pageNumber="175">
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<taxonomicName authorityName="V. T. Tran" authorityYear="2023" class="Liliopsida" family="Gramineae" genus="Yersinochloa" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Yersinochloa nghiana" order="Poales" pageId="0" pageNumber="175" phylum="Tracheophyta" rank="species" species="nghiana">
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<emphasis italics="true" pageId="0" pageNumber="175">Yersinochloa nghiana</emphasis>
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</taxonomicName>
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is of considerable importance to the local people. Its culms are used for making handicrafts and household tools.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="175" type="etymology">
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<paragraph pageId="0" pageNumber="175">Etymology.</paragraph>
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<paragraph pageId="0" pageNumber="175">The new species is named in honour of Dr. Nguyen Hoang Nghia for his contributions to the bamboo research in Vietnam.</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="175" type="preliminary conservation status">
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<paragraph pageId="0" pageNumber="175">Preliminary conservation status.</paragraph>
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<paragraph pageId="0" pageNumber="175">
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The species
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<taxonomicName authorityName="V. T. Tran" authorityYear="2023" class="Liliopsida" family="Gramineae" genus="Yersinochloa" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Yersinochloa nghiana" order="Poales" pageId="0" pageNumber="175" phylum="Tracheophyta" rank="species" species="nghiana">
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<emphasis italics="true" pageId="0" pageNumber="175">Yersinochloa nghiana</emphasis>
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</taxonomicName>
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sp. nov. is only known from a single population in Braian Mountain, Di Linh District, Lam Dong Province, Vietnam. This single population has no more than 500 mature clumps, all growing in degraded natural forests in valleys, but is also common along rivers and valleys. According to IUCN Red List Categories and Criteria (
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<bibRefCitation pageId="0" pageNumber="175" publicationUrl="https://www.iucnredlist.org/resources/redlistguidelines" refId="B1" refString="2022. . https://www.iucnredlist.org/resources/redlistguidelines" url="https://www.iucnredlist.org/resources/redlistguidelines" year="2022">IUCN 2022</bibRefCitation>
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), the species is classified as data deficient (DD) and it needs more surveys.
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</paragraph>
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</subSubSection>
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</treatment>
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</document> |