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191 lines
16 KiB
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<document ID-DOI="http://dx.doi.org/10.3897/phytokeys.34.6151" ID-PMC="PMC3941065" ID-Pensoft-Pub="1314-2003-34-1" ID-Pensoft-UUID="FFCADC73FF99FF84FFB15B3A133C7241" ID-PubMed="24596488" ID-Zenodo-Dep="576204" ModsDocID="1314-2003-34-1" checkinTime="1451251777149" checkinUser="pensoft" docAuthor="Dillon, Michael O. & Luebert, Federico" docDate="2014" docId="AC061422A58E5A94950606E468A292D3" docLanguage="en" docName="PhytoKeys 34: 1-13" docOrigin="PhytoKeys 34" docPubDate="2014-01-31" docSource="http://dx.doi.org/10.3897/phytokeys.34.6151" docTitle="Plazia robinsonii M. O. Dillon & Sagást. 2014, sp. nov." docType="treatment" docVersion="3" id="FFCADC73FF99FF84FFB15B3A133C7241" lastPageNumber="7" masterDocId="FFCADC73FF99FF84FFB15B3A133C7241" masterDocTitle="Synopsis of Plazia Ruiz & Pav. (Onoserideae, Asteraceae), including a new species from northern Peru" masterLastPageNumber="13" masterPageNumber="1" pageNumber="6" updateTime="1668141035918" 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>Synopsis of Plazia Ruiz & Pav. (Onoserideae, Asteraceae), including a new species from northern Peru</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>Dillon, Michael O.</mods:namePart>
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<mods:affiliation>Botany Department, The Field Museum, 1400 South Lake Shore Drive, Chicago, IL 60605, USA</mods:affiliation>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Luebert, Federico</mods:namePart>
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<mods:affiliation>Freie Universitaet Berlin, Institut fuer Biologie - Botanik, Altensteinstr. 6, D - 14195, Berlin, Germany and Departamento de Silvicultura y Conservacion de la Naturaleza, Universidad de Chile, Santiago, Chile & Present address: Universitaet Bonn, Nees - Institut fuer Biodiversitaet der Pflanzen, Meckenheimer Allee 170, D - 53115 Bonn, Germany</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>2014</mods:date>
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<mods:detail type="pubDate">
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<mods:number>2014-01-31</mods:number>
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</mods:detail>
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<mods:detail type="volume">
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<mods:number>34</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>1</mods:start>
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<mods:end>13</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.34.6151</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.34.6151</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1314-2003-34-1</mods:identifier>
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<mods:identifier type="Pensoft-UUID">FFCADC73FF99FF84FFB15B3A133C7241</mods:identifier>
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<mods:identifier type="Zenodo-Dep">576204</mods:identifier>
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</mods:mods>
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<treatment ID-GBIF-Taxon="182228795" LSID="urn:lsid:plazi:treatment:AC061422A58E5A94950606E468A292D3" httpUri="http://treatment.plazi.org/id/AC061422A58E5A94950606E468A292D3" lastPageId="6" lastPageNumber="7" pageId="5" pageNumber="6">
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<subSubSection pageId="5" pageNumber="6" type="nomenclature">
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<paragraph pageId="5" pageNumber="6">
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<pageBreakToken pageId="5" pageNumber="6" start="start">4</pageBreakToken>
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.
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<taxonomicName LSID="AC061422-A58E-5A94-9506-06E468A292D3" authority="M. O. Dillon & Sagást." authorityName="M. O. Dillon & Sagást." authorityYear="2014" class="Magnoliopsida" family="Asteraceae" genus="Plazia" higherTaxonomySource="GBIF,CoL" kingdom="Plantae" lsidName="Plazia robinsonii" order="Asterales" pageId="5" pageNumber="6" phylum="Tracheophyta" rank="species" species="robinsonii" status="sp. nov.">
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Plazia robinsonii M.O. Dillon &
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<normalizedToken originalValue="Sagást">Sagast</normalizedToken>
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.
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</taxonomicName>
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<taxonomicNameLabel pageId="5" pageNumber="6">sp. nov.</taxonomicNameLabel>
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<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Plazia robinsonii M. O. Dillon & Sagast. (drawn from A. L o pez M. & A. Sag a stegui A. 8123). A Flowering branch B External phyllary C Internal phyllary D Ligulate floret E Terminal portion of the style of ligulate florets F Stamen from ligulate floret G Disc floret H Stamen from disc floret I Achene." httpUri="https://binary.pensoft.net/fig/10580" pageId="5" pageNumber="6">Figs 2</figureCitation>
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<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Plazia robinsonii M. O. Dillon & Sagast. Photograph of the holotype collection of A. L o pez M. & A. Sag a stegui A. 8123 (HUT)." httpUri="https://binary.pensoft.net/fig/10581" pageId="5" pageNumber="6">, 3</figureCitation>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="5" pageNumber="6" type="type.">
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<paragraph pageId="5" pageNumber="6">Type.</paragraph>
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<paragraph pageId="5" pageNumber="6">
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PERU. La Libertad: Prov. Huamachuco, Pallar - Huaguil, carretera a Tayabamba, 3000 m, 23 Jun 1974,
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<emphasis italics="true" pageId="5" pageNumber="6">A. L</emphasis>
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<normalizedToken originalValue="ó">o</normalizedToken>
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<emphasis italics="true" pageId="5" pageNumber="6">pez M. & A. Sag</emphasis>
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<normalizedToken originalValue="á">a</normalizedToken>
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<emphasis italics="true" pageId="5" pageNumber="6">stegui A. 8123</emphasis>
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(holotype: HUT12930!, isotypes: F1863606!, US3266111!).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="5" pageNumber="6" type="diagnosis.">
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<paragraph pageId="5" pageNumber="6">Diagnosis.</paragraph>
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<paragraph pageId="5" pageNumber="6">Plaziae confertae affinis, a qua foliis minoribus, capitulis majoribus et radiis 15-20 differt.</paragraph>
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</subSubSection>
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<subSubSection pageId="5" pageNumber="6" type="description">
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<paragraph pageId="5" pageNumber="6">Description.</paragraph>
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<paragraph pageId="5" pageNumber="6">Shrubs to 1 m, the branches erect; stems lacking spines. Leaves simple, sessile, in whorls at branch tips; blades oblanceolate, 10-25 mm long, 1-3 mm wide, uninerved, adaxial and abaxial surfaces glabrous; margins entire. Capitulescences of solitary, terminal heads, sessile. Capitula heterogamous, radiate; involucres broadly campanulate, c. 25 mm wide, 30 mm in diameter; receptacles plane, glabrous; phyllaries 4-5-seriate, the outer ovate, 8-12 mm long, 4-6 mm wide, apically acuminate, the inner oblong 20-25 mm long, 4-5 mm wide, apically acute, ciliolate; ray florets 15-20, the corollas ligulate-bilabiate, whitish, the tube 4-5 mm long, the outer lip 4-nerved, 8-12 mm long, tridentate, the inner lip bifid; styles cylindric, glabrous, bifid, the branches short, inconspicuous; disc florets whitish, c. 40, the corollas tubular, actinomorphic, glabrous, the limb deeply 5-lobed, the lobes 5-8 mm long, c. 1/2 the length of the corolla, coiled; anthers linear, the terminal appendages lanceolate, fused into a column, truncate, the bases caudate; styles claviform, the branches short, rounded. Achenes [ray and disc] glabrous, 5-ribbed, 4-5 mm long; pappus of scabrid bristles, c. 15 mm long, isomorphic, pale yellow.</paragraph>
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<caption httpUri="https://binary.pensoft.net/fig/10580" pageId="5" pageNumber="6" start="Figure 2" startId="F2">
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<paragraph pageId="5" pageNumber="6">
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<emphasis bold="true" pageId="5" pageNumber="6">Figure 2.</emphasis>
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<taxonomicName class="Magnoliopsida" family="Asteraceae" genus="Plazia" higherTaxonomySource="GBIF,CoL" kingdom="Plantae" lsidName="" order="Asterales" pageId="5" pageNumber="6" phylum="Tracheophyta" rank="species" species="robinsonii">
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<emphasis italics="true" pageId="5" pageNumber="6">Plazia robinsonii</emphasis>
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</taxonomicName>
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M.O. Dillon &
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<normalizedToken originalValue="Sagást">Sagast</normalizedToken>
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. (drawn from
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<emphasis italics="true" pageId="5" pageNumber="6">A. L</emphasis>
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<normalizedToken originalValue="ó">o</normalizedToken>
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<emphasis italics="true" pageId="5" pageNumber="6">pez M. & A. Sag</emphasis>
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<normalizedToken originalValue="á">a</normalizedToken>
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<emphasis italics="true" pageId="5" pageNumber="6">stegui A. 8123</emphasis>
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).
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<emphasis bold="true" pageId="5" pageNumber="6">A</emphasis>
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Flowering branch
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<emphasis bold="true" pageId="5" pageNumber="6">B</emphasis>
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External phyllary
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<emphasis bold="true" pageId="5" pageNumber="6">C</emphasis>
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Internal phyllary
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<emphasis bold="true" pageId="5" pageNumber="6">D</emphasis>
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Ligulate floret
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<emphasis bold="true" pageId="5" pageNumber="6">E</emphasis>
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Terminal portion of the style of ligulate florets
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<emphasis bold="true" pageId="5" pageNumber="6">F</emphasis>
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Stamen from ligulate floret
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<emphasis bold="true" pageId="5" pageNumber="6">G</emphasis>
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Disc floret
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<emphasis bold="true" pageId="5" pageNumber="6">H</emphasis>
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Stamen from disc floret
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<emphasis bold="true" pageId="5" pageNumber="6">I</emphasis>
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Achene.
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</paragraph>
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</caption>
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<caption httpUri="https://binary.pensoft.net/fig/10581" pageId="5" pageNumber="6" start="Figure 3" startId="F3">
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<paragraph pageId="5" pageNumber="6">
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<emphasis bold="true" pageId="5" pageNumber="6">Figure 3.</emphasis>
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<taxonomicName class="Magnoliopsida" family="Asteraceae" genus="Plazia" higherTaxonomySource="GBIF,CoL" kingdom="Plantae" lsidName="" order="Asterales" pageId="5" pageNumber="6" phylum="Tracheophyta" rank="species" species="robinsonii">
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<emphasis italics="true" pageId="5" pageNumber="6">Plazia robinsonii</emphasis>
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</taxonomicName>
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M.O.Dillon &
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<normalizedToken originalValue="Sagást">Sagast</normalizedToken>
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. Photograph of the holotype collection of
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<emphasis italics="true" pageId="5" pageNumber="6">A. L</emphasis>
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<normalizedToken originalValue="ó">o</normalizedToken>
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<emphasis italics="true" pageId="5" pageNumber="6">pez M. & A. Sag</emphasis>
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<normalizedToken originalValue="á">a</normalizedToken>
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<emphasis italics="true" pageId="5" pageNumber="6">stegui A. 8123</emphasis>
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(HUT).
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</paragraph>
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</caption>
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</subSubSection>
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<subSubSection pageId="5" pageNumber="6" type="distribution">
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<paragraph pageId="5" pageNumber="6">Distribution and conservation.</paragraph>
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<paragraph pageId="5" pageNumber="6">
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Known only from the type locality in an inter-Andean valley at around 3000 m (
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<geoCoordinate degrees="7" direction="south" minutes="47.22" orientation="latitude" precision="9" value="-7.787">7°47.22'S</geoCoordinate>
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,
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<geoCoordinate degrees="77" direction="west" minutes="52.27" orientation="longitude" precision="9" value="-77.87117">77°52.27'W</geoCoordinate>
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). The entire area surrounding Huamachuco and the road east to Tayabamba has been intensely cultivated for many years and is now highly disturbed by human pressure with expanding cultivation. Only fragmented small pockets of original habitats remain, usually in steeper quebradas. This species has not been recollected for 40 years and should be considered "critically endangered" (
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<bibRefCitation author="IUCN, Species Survival Commision" journalOrPublisher="Phytologia" pageId="8" pageNumber="9" refId="B23" refString="IUCN, Species Survival Commision, 2001. IUCN Red List Categories and Criteria: Version 3.1. IUCN, Gland, Switzerland and Cambridge, United Kingdom, 1-30." title="IUCN Red List Categories and Criteria: Version 3.1. IUCN, Gland, Switzerland and Cambridge, United Kingdom, 1 - 30." year="2001">IUCN 2001</bibRefCitation>
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).
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</paragraph>
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</subSubSection>
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<subSubSection lastPageId="6" lastPageNumber="7" pageId="5" pageNumber="6" type="discussion.">
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<paragraph pageId="5" pageNumber="6">Discussion.</paragraph>
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<paragraph pageId="5" pageNumber="6">
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The duplicates of the type collection of this new species were originally distributed under the generic name
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<taxonomicName class="Magnoliopsida" family="Asteraceae" genus="Diplostephium" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="" order="Asterales" pageId="5" pageNumber="6" phylum="Tracheophyta" rank="genus">
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<emphasis italics="true" pageId="5" pageNumber="6">Diplostephium</emphasis>
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</taxonomicName>
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<bibRefCitation author="Kunth, KS" journalOrPublisher="American Journal of Botany" pageId="7" pageNumber="8" refId="B11" refString="Kunth, KS, 1818. Diplostephium. Nova Genera et Species Plantarum (folio ed) 4: 75, t. 335." title="Diplostephium. Nova Genera et Species Plantarum (folio ed) 4: 75, t. 335." year="1818">Kunth (1818)</bibRefCitation>
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, a member of the tribe Astereae. The overall morphology of the material does superficially resemble some members of
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<taxonomicName class="Magnoliopsida" family="Asteraceae" genus="Diplostephium" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="" order="Asterales" pageId="5" pageNumber="6" phylum="Tracheophyta" rank="genus">
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<emphasis italics="true" pageId="5" pageNumber="6">Diplostephium</emphasis>
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</taxonomicName>
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, however, the bilabiate corollas, truncate style branches, and anther tails are typical for the Mutisieae not the Astereae. The new species was uncovered after the Flora of Peru treatment (
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<bibRefCitation author="Ferreyra, R" journalOrPublisher="Boletin de la Sociedad Peruana de Botanica" pageId="7" pageNumber="8" refId="B7" refString="Ferreyra, R, 1995. Family Asteraceae: Part VI, Tribe Mutiseae. In: MacbrideJF et al. Flora of Peru. Fieldiana Botany. N.S.35: 1-101." title="Family Asteraceae: Part VI, Tribe Mutiseae. In: MacbrideJF et al. Flora of Peru. Fieldiana Botany. N. S. 35: 1 - 101." year="1995">Ferreyra 1995</bibRefCitation>
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) was published and set aside for investigation. Only recently was the material encountered during routine filing, having been misplaced for nearly two decades.
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</paragraph>
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<paragraph lastPageId="6" lastPageNumber="7" pageId="5" pageNumber="6">
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The type locality is approximately 450 km north of its nearest congener,
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<taxonomicName class="Magnoliopsida" family="Asteraceae" genus="Plazia" higherTaxonomySource="GBIF,CoL" kingdom="Plantae" lsidName="" order="Asterales" pageId="5" pageNumber="6" phylum="Tracheophyta" rank="species" species="conferta">
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<emphasis italics="true" pageId="5" pageNumber="6">Plazia conferta</emphasis>
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</taxonomicName>
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, from near Tarma. Although the region where the original collections were made has been visited by numerous botanists, to our knowledge this species has not been recollected since 1974 when it was encountered by Abundio
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<normalizedToken originalValue="Sagástegui">Sagastegui</normalizedToken>
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Alva and
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<pageBreakToken pageId="6" pageNumber="7" start="start">Arnaldo</pageBreakToken>
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<normalizedToken originalValue="López">Lopez</normalizedToken>
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Miranda. Casual efforts to find the plant again have not met with success. Given that the plant is quite showy and distinctive, it should not go undetected for long if it is indeed extant.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="6" pageNumber="7" type="etymology.">
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<paragraph pageId="6" pageNumber="7">Etymology.</paragraph>
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<paragraph pageId="6" pageNumber="7">
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This species honors Dr Harold Robinson, Senior Research Curator at the National Herbarium, Smithsonian Institution. He suggested with his annotation of the US sheet, designated as an isotype, that this taxon was perhaps a new species of
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<taxonomicName class="Magnoliopsida" family="Asteraceae" genus="Plazia" higherTaxonomySource="GBIF,CoL" kingdom="Plantae" lsidName="" order="Asterales" pageId="6" pageNumber="7" phylum="Tracheophyta" rank="genus">
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<emphasis italics="true" pageId="6" pageNumber="7">Plazia</emphasis>
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</taxonomicName>
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, and not an unusual
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<taxonomicName class="Magnoliopsida" family="Asteraceae" genus="Diplostephium" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="" order="Asterales" pageId="6" pageNumber="7" phylum="Tracheophyta" rank="genus">
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<emphasis italics="true" pageId="6" pageNumber="7">Diplostephium</emphasis>
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</taxonomicName>
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, as had been suggested on the original label.
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</paragraph>
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</subSubSection>
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</treatment>
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</document> |