257 lines
21 KiB
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257 lines
21 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/phytokeys.15.3084" ID-PMC="PMC3492929" ID-Pensoft-Pub="1314-2003-15-1" ID-Pensoft-UUID="FF9AC356FFDAFB26FF95FFE3FFA1520C" ID-PubMed="23185125" ID-Zenodo-Dep="576134" ModsDocID="1314-2003-15-1" checkinTime="1451251993896" checkinUser="pensoft" docAuthor="Soreng, Robert J. & Peterson, Paul M." docDate="2012" docId="943BD4FF3F4454B1A1717478CC0D288A" docLanguage="en" docName="PhytoKeys 15: 1-104" docOrigin="PhytoKeys 15" docPubDate="2012-08-06" docSource="http://dx.doi.org/10.3897/phytokeys.15.3084" docTitle="Poa wendtii Soreng & P. M. Peterson 2012, sp. nov." docType="treatment" docVersion="3" id="FF9AC356FFDAFB26FF95FFE3FFA1520C" lastPageNumber="69" masterDocId="FF9AC356FFDAFB26FF95FFE3FFA1520C" masterDocTitle="Revision of Poa L. (Poaceae, Pooideae, Poeae, Poinae) in Mexico: new records, re-evaluation of P. ruprechtii, and two new species, P. palmeri and P. wendtii" masterLastPageNumber="104" masterPageNumber="1" pageNumber="67" updateTime="1668139833991" 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>Revision of Poa L. (Poaceae, Pooideae, Poeae, Poinae) in Mexico: new records, re-evaluation of P. ruprechtii, and two new species, P. palmeri and P. wendtii</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>Soreng, Robert J.</mods:namePart>
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<mods:affiliation>Department of Botany, National Museum of Natural History, Smithsonian Institution Washington, DC, 20013 - 7012, 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>Peterson, Paul M.</mods:namePart>
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<mods:affiliation>Department of Botany, National Museum of Natural History, Smithsonian Institution Washington, DC, 20013 - 7012, USA</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>2012</mods:date>
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<mods:detail type="pubDate">
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<mods:number>2012-08-06</mods:number>
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</mods:detail>
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<mods:detail type="volume">
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<mods:number>15</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>104</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.15.3084</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.15.3084</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1314-2003-15-1</mods:identifier>
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<mods:identifier type="Pensoft-UUID">FF9AC356FFDAFB26FF95FFE3FFA1520C</mods:identifier>
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<mods:identifier type="Zenodo-Dep">576134</mods:identifier>
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</mods:mods>
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<treatment ID-GBIF-Taxon="182229285" LSID="urn:lsid:plazi:treatment:943BD4FF3F4454B1A1717478CC0D288A" httpUri="http://treatment.plazi.org/id/943BD4FF3F4454B1A1717478CC0D288A" lastPageId="68" lastPageNumber="69" pageId="66" pageNumber="67">
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<subSubSection pageId="66" pageNumber="67" type="nomenclature">
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<paragraph pageId="66" pageNumber="67">
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23.
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<taxonomicName LSID="943BD4FF-3F44-54B1-A171-7478CC0D288A" authority="Soreng & P. M. Peterson" authorityName="Soreng & P. M. Peterson" authorityYear="2012" class="Liliopsida" family="Poaceae" genus="Poa" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Poa wendtii" order="Poales" pageId="66" pageNumber="67" phylum="Tracheophyta" rank="species" species="wendtii" status="sp. nov.">Poa wendtii Soreng & P.M. Peterson</taxonomicName>
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<taxonomicNameLabel pageId="66" pageNumber="67">sp. nov.</taxonomicNameLabel>
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<figureCitation captionStart="Figure 22" captionStartId="F22" captionText="Figure 22. Poa wendtii Soreng & P. M. Peterson A habit B culm C inflorescence D blade apex E ligule F spikelet G lower glume H upper glume I floret. Drawn from the holotype collection (Wendt 883 & Riskind)." httpUri="https://binary.pensoft.net/fig/10157" pageId="66" pageNumber="67">Figs 22</figureCitation>
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<figureCitation captionStart="Figure 23" captionStartId="F23" captionText="Figure 23. Poa wendtii Soreng & P. M. Peterson A lemma B lemma abaxial view C palea dorsal view D palea ventral view E perfect flower enclosed in palea with lodicules, pistil, and stamen filaments F perfect flower with pistil / partly developed caryopsis G lodicules and rachilla internode H caryopsis ventral view, with sulcus and hilum I caryopsis dorsal view. Drawn from the holotype collection (Wendt 883 & Riskind)." httpUri="https://binary.pensoft.net/fig/10158" pageId="66" pageNumber="67">23</figureCitation>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="66" pageNumber="67" type="type">
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<paragraph pageId="66" pageNumber="67">Type:</paragraph>
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<paragraph pageId="66" pageNumber="67">
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Mexico, Coahuila, [Sierra de Santa Rosa],
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<normalizedToken originalValue="Rincón">Rincon</normalizedToken>
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de
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<normalizedToken originalValue="María">Maria</normalizedToken>
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, on Hacienda La Babia, ca. 70 road mi NW from
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<normalizedToken originalValue="Múzquiz">Muzquiz</normalizedToken>
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,
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<geoCoordinate degrees="28" direction="north" minutes="27" orientation="latitude" precision="15" seconds="30" value="28.458334">28°27'30"N</geoCoordinate>
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,
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<geoCoordinate degrees="102" direction="west" minutes="05" orientation="longitude" precision="925" value="-102.083336">102°05'W</geoCoordinate>
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, 1750 m, Steep NE facing talus and stabilized areas below high cliffs in southwest part of
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<normalizedToken originalValue="rincón">rincon</normalizedToken>
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, southwest of "Slump Spring", woods of
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<taxonomicName class="Pinopsida" family="Pinaceae" genus="Abies" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Pinales" pageId="66" pageNumber="67" phylum="Coniferophyta" rank="species" species="coahuilensis">
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<emphasis italics="true" pageId="66" pageNumber="67">Abies coahuilensis</emphasis>
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</taxonomicName>
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,
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<taxonomicName class="Liliopsida" family="Agavaceae" genus="Yucca" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Asparagales" pageId="66" pageNumber="67" phylum="Magnoliophyta" rank="genus">
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<emphasis italics="true" pageId="66" pageNumber="67">Yucca</emphasis>
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</taxonomicName>
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cf.
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<emphasis italics="true" pageId="66" pageNumber="67">thompsoniana</emphasis>
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Trel.,
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<taxonomicName class="Dicotyledoneae" family="Fagaceae" genus="Quercus" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Fagales" pageId="66" pageNumber="67" phylum="Angiospermae" rank="genus">
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<emphasis italics="true" pageId="66" pageNumber="67">Quercus</emphasis>
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</taxonomicName>
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<emphasis italics="true" pageId="66" pageNumber="67">gravesii</emphasis>
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Sudw.,
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<taxonomicName class="Dicotyledoneae" family="Fagaceae" genus="Quercus" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Fagales" pageId="66" pageNumber="67" phylum="Angiospermae" rank="genus">
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<emphasis italics="true" pageId="66" pageNumber="67">Quercus</emphasis>
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</taxonomicName>
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sp.,
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<taxonomicName authorityName="Fauvel" authorityYear="1878" class="Insecta" family="Staphylinidae" genus="Tilea" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="" order="Coleoptera" pageId="66" pageNumber="67" phylum="Arthropoda" rank="genus">
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<emphasis italics="true" pageId="66" pageNumber="67">Tilea</emphasis>
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</taxonomicName>
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,
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<taxonomicName class="Dicotyledoneae" family="Fabaceae" genus="Cercis" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Rosales" pageId="66" pageNumber="67" phylum="Angiospermae" rank="genus">
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<emphasis italics="true" pageId="66" pageNumber="67">Cercis</emphasis>
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</taxonomicName>
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,
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<taxonomicName authorityName="Linnaeus" authorityYear="1753" class="Dicotyledoneae" family="Juglandaceae" genus="Juglans" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Juglandales" pageId="66" pageNumber="67" phylum="Angiospermae" rank="genus">
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<emphasis italics="true" pageId="66" pageNumber="67">Juglans</emphasis>
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</taxonomicName>
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,
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<taxonomicName class="Monocotyledoneae" family="Amaryllidaceae" genus="Agave" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Liliiflorae" pageId="66" pageNumber="67" phylum="Angiospermae" rank="genus">
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<emphasis italics="true" pageId="66" pageNumber="67">Agave</emphasis>
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</taxonomicName>
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sp., 27 Apr 1975,
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<emphasis italics="true" pageId="66" pageNumber="67">T.L.Wendt 883 & D.Riskind</emphasis>
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(holotype: LL-TEX-75341!).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="66" pageNumber="67" type="diagnosis">
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<paragraph pageId="66" pageNumber="67">Diagnosis.</paragraph>
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<paragraph pageId="66" pageNumber="67">
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<taxonomicName authorityName="Soreng & P. M. Peterson" authorityYear="2012" class="Liliopsida" family="Poaceae" genus="Poa" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="" order="Poales" pageId="66" pageNumber="67" phylum="Tracheophyta" rank="species" species="wendtii">
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<emphasis italics="true" pageId="66" pageNumber="67">Poa wendtii</emphasis>
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</taxonomicName>
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differs from other open-panicled, broad-leaved, long-anthered species of
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<taxonomicName class="Liliopsida" family="Poaceae" genus="Poa" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="" order="Poales" pageId="66" pageNumber="67" phylum="Tracheophyta" rank="genus">
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<emphasis italics="true" pageId="66" pageNumber="67">Poa</emphasis>
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</taxonomicName>
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from around the region (e.g.
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<taxonomicName class="Liliopsida" family="Poaceae" genus="Poa" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="" order="Poales" pageId="66" pageNumber="67" phylum="Tracheophyta" rank="species" species="matris-occidentalis">
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<emphasis italics="true" pageId="66" pageNumber="67">Poa matris-occidentalis</emphasis>
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</taxonomicName>
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,
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<taxonomicName authorityName="Soreng & P. M. Peterson" authorityYear="2012" class="Liliopsida" family="Poaceae" genus="Poa" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="" order="Poales" pageId="66" pageNumber="67" phylum="Tracheophyta" rank="species" species="palmeri">
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<emphasis italics="true" pageId="66" pageNumber="67">Poa palmeri</emphasis>
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</taxonomicName>
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, and
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<taxonomicName authorityName="Vasey" authorityYear="1888" class="Liliopsida" family="Poaceae" genus="Poa" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="" order="Poales" pageId="66" pageNumber="67" phylum="Tracheophyta" rank="species" species="tracyi">
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<emphasis italics="true" pageId="66" pageNumber="67">Poa tracyi</emphasis>
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</taxonomicName>
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) by having abruptly reduced upper culm leaf blades and more compact, ovate (non lanceolate) spikelets in lateral view.
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</paragraph>
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</subSubSection>
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<subSubSection lastPageId="68" lastPageNumber="69" pageId="66" pageNumber="67" type="description">
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<paragraph pageId="66" pageNumber="67">Description.</paragraph>
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<paragraph lastPageId="68" lastPageNumber="69" pageId="66" pageNumber="67">
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Hermaphroditic (apparently).
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<emphasis bold="true" pageId="66" pageNumber="67">Perennials</emphasis>
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; tufted, sub-rhizomatous, tufts loose, moderate girth and height, bluish-grey-green; tillers extravaginal (basally cataphyllous), with lateral or downward tending, cataphyllous shoots, cataphylls smooth, sub-lustrous, brownish or anthocyanic.
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<emphasis bold="true" pageId="66" pageNumber="67">Culms</emphasis>
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50-70 cm tall, erect, blades reduced upward, terete, smooth; nodes 3-4, 0 or uppermost node exposed.
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<emphasis bold="true" pageId="66" pageNumber="67">Leaf</emphasis>
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sheaths slightly compressed, proximal culm ones smooth, glabrous, middle ones densely finely scabrous, upper ones moderately to lightly scabrous; butt sheaths cataphyllous, smooth, glabrous; flag leaf sheaths 13-16 cm long, margins fused for 30-42% their length, 14-16 cm long, 10-20
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<normalizedToken originalValue="×">x</normalizedToken>
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longer than its blade; collar margins of lower and mid culm leaves slightly asperous to coarsely short ciliate; ligules 1.2-1.8 (top leaf), 2.7-3.3(2nd leaf down), to 3 mm on the longest leaves, whitish, abaxially sparsely to moderately scabrous, margins smooth, apices obtuse to acute, slightly irregular; blades to 22 cm long, mostly 3-5 mm wide, blades folded or flat when fresh, distinctly keeled, moderately thick, retaining form on drying, glaucous (all surfaces waxy coated), margins abruptly slightly inrolled, abaxially densely short scabrous, with short broad-based closely appressed hooklets, ribs slightly expressed, margins
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<pageBreakToken pageId="67" pageNumber="68" start="start">somewhat</pageBreakToken>
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thickened, and finely scabrous, adaxially smooth to sparsely short scabrous, with very shallow ridges and furrows, broader leaves with ca. 15 ribs, prominently prow-tipped; lower mid-cauline blades the longest, each succeeding that, shorter than the one below by ca. 1/2, that of the flag leaf blades reduced, 0.7-1.3 cm long; sterile shoot blades similar to cauline blades in form.
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<emphasis bold="true" pageId="67" pageNumber="68">Panicles</emphasis>
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13-14 cm long, erect to slightly nodding, open, broadly pyramidal, slightly secund, fairly sparse, well exerted, with 50-70 spikelets, peduncles smooth, proximal internode 2.5-4 cm long, smooth or lightly scabrous; rachis with 2-3 branches per node; primary branches widely spreading to reflexed, slender, slightly flexuous, proximally terete or slightly angled, distally moderately angled, proximally smooth, distally moderately scabrous mostly on the angles; lateral pedicels about half as, to as long as, their spikelets, m
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<pageBreakToken pageId="68" pageNumber="69" start="start">oderately</pageBreakToken>
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scabrous; longest branches 5-7 cm, longest with 8-11 spikelets in the distal 1/2.
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<emphasis bold="true" pageId="68" pageNumber="69">Spikelets</emphasis>
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4-6 mm long, 2.5-3
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<normalizedToken originalValue="×">x</normalizedToken>
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as long as wide, broadly lanceolate, laterally compressed, not bulbiferous, purplish throughout at maturity; florets (2-)3(-4), hermaphroditic; rachilla internodes terete, 0.5-1 mm long, mostly hidden, terete, muriculate, glabrous; glumes lanceolate, sub-lustrous, slightly unequal, both shorter than or the 2nd equaling the first lemma, distinctly keeled, keels sparely to moderately short scabrous distally, surfaces with smooth, with scarce short cells, or with some hooks near the apex, edges smooth, apices acute, lower glumes 2.5-3.2 mm long, 1-3-veined; upper glumes 3.3-3.7 mm long, 3-veined; calluses dorsally webbed, web distinct, hairs to ca. 1-2 mm long, woolly; lemmas 3.5-4 mm long, 5-veined, elliptical in side view, anthocyanic at maturity, distinctly keeled, keel and marginal and intermediate veins villous for 2/3, 1/3, and sometimes 1/4 their length, respectively, between veins sparsely to moderately lanate in proximal half, intermediate veins distinct, upper margins narrowly to broadly bronzy-scarious to hyaline, edges smooth or sparingly scabrous, apices obtuse to broadly acute, palea keels scabrous in the distal half, sometimes with a several soft hairs medially, intercostal region sulcate, densely muriculate, usually sparsely puberulent in the proximal third.
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<emphasis bold="true" pageId="68" pageNumber="69">Flowers</emphasis>
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chasmogamous; anthers 1.6-2.1 mm long.
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<emphasis bold="true" pageId="68" pageNumber="69">Caryopses</emphasis>
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1.7-2.0 mm long, elliptical in side-view, compressed, laterally compressed, brown, distinctly shallow sulcate, hilum 0.25 mm long, oval, grain adherent to the palea. 2n = unknown.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="68" pageNumber="69" type="distribution">
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<paragraph pageId="68" pageNumber="69">Distribution.</paragraph>
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<paragraph pageId="68" pageNumber="69">The new species is known only from the type collection from the Sierra de Santa Rosa, Coahuila.</paragraph>
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</subSubSection>
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<subSubSection pageId="68" pageNumber="69" type="ecology">
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<paragraph pageId="68" pageNumber="69">Ecology.</paragraph>
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<paragraph pageId="68" pageNumber="69">
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The species occurs on sheltered talus and cliff bases, in forests of
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<taxonomicName class="Pinopsida" family="Pinaceae" genus="Abies" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Pinales" pageId="68" pageNumber="69" phylum="Coniferophyta" rank="species" species="coahuilensis">
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<emphasis italics="true" pageId="68" pageNumber="69">Abies coahuilensis</emphasis>
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</taxonomicName>
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I.M. Johnst. at 1750 m. The only specimen known has perfect flowers. Flowering in Apr to May.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="68" pageNumber="69" type="etymology">
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<paragraph pageId="68" pageNumber="69">Etymology.</paragraph>
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<paragraph pageId="68" pageNumber="69">
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It is our pleasure to name this new species in honor of Thomas Leighton Wendt (born 1950) who collected this and many other plants (including
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<taxonomicName class="Liliopsida" family="Poaceae" genus="Poa" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="" order="Poales" pageId="68" pageNumber="69" phylum="Tracheophyta" rank="genus">
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<emphasis italics="true" pageId="68" pageNumber="69">Poa</emphasis>
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</taxonomicName>
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) in the Chihuahuan Desert region.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="68" pageNumber="69" type="conservation status">
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<paragraph pageId="68" pageNumber="69">Conservation status.</paragraph>
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<paragraph pageId="68" pageNumber="69">The species is rare.</paragraph>
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</subSubSection>
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<subSubSection pageId="68" pageNumber="69" type="discussion">
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<paragraph pageId="68" pageNumber="69">Discussion.</paragraph>
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<paragraph pageId="68" pageNumber="69">The type collection is presumed to be a unicate (T.L.Wendt, pers. comm. 2011). The species which appears to be endemic to the Sierra de Santa Rosa, should be considered extremely rare and possibly endangered.</paragraph>
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<caption httpUri="https://binary.pensoft.net/fig/10157" pageId="68" pageNumber="69" start="Figure 22" startId="F22">
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<paragraph pageId="68" pageNumber="69">
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<emphasis bold="true" pageId="68" pageNumber="69">Figure 22.</emphasis>
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<taxonomicName authorityName="Soreng & P. M. Peterson" authorityYear="2012" class="Liliopsida" family="Poaceae" genus="Poa" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="" order="Poales" pageId="68" pageNumber="69" phylum="Tracheophyta" rank="species" species="wendtii">
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<emphasis italics="true" pageId="68" pageNumber="69">Poa wendtii</emphasis>
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</taxonomicName>
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Soreng & P.M. Peterson
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<emphasis bold="true" pageId="68" pageNumber="69">A</emphasis>
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habit
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<emphasis bold="true" pageId="68" pageNumber="69">B</emphasis>
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culm
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<emphasis bold="true" pageId="68" pageNumber="69">C</emphasis>
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inflorescence
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<emphasis bold="true" pageId="68" pageNumber="69">D</emphasis>
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blade apex
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<emphasis bold="true" pageId="68" pageNumber="69">E</emphasis>
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ligule
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<emphasis bold="true" pageId="68" pageNumber="69">F</emphasis>
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spikelet
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<emphasis bold="true" pageId="68" pageNumber="69">G</emphasis>
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lower glume
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<emphasis bold="true" pageId="68" pageNumber="69">H</emphasis>
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upper glume
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<emphasis bold="true" pageId="68" pageNumber="69">I</emphasis>
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floret. Drawn from the holotype collection (
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<emphasis italics="true" pageId="68" pageNumber="69">Wendt 883 & Riskind</emphasis>
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).
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</paragraph>
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</caption>
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<caption httpUri="https://binary.pensoft.net/fig/10158" pageId="68" pageNumber="69" start="Figure 23" startId="F23">
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<paragraph pageId="68" pageNumber="69">
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<emphasis bold="true" pageId="68" pageNumber="69">Figure 23.</emphasis>
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<taxonomicName authorityName="Soreng & P. M. Peterson" authorityYear="2012" class="Liliopsida" family="Poaceae" genus="Poa" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="" order="Poales" pageId="68" pageNumber="69" phylum="Tracheophyta" rank="species" species="wendtii">
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<emphasis italics="true" pageId="68" pageNumber="69">Poa wendtii</emphasis>
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</taxonomicName>
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Soreng & P.M. Peterson
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<emphasis bold="true" pageId="68" pageNumber="69">A</emphasis>
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lemma
|
||
<emphasis bold="true" pageId="68" pageNumber="69">B</emphasis>
|
||
lemma abaxial view
|
||
<emphasis bold="true" pageId="68" pageNumber="69">C</emphasis>
|
||
palea dorsal view
|
||
<emphasis bold="true" pageId="68" pageNumber="69">D</emphasis>
|
||
palea ventral view
|
||
<emphasis bold="true" pageId="68" pageNumber="69">E</emphasis>
|
||
perfect flower enclosed in palea with lodicules, pistil, and stamen filaments
|
||
<emphasis bold="true" pageId="68" pageNumber="69">F</emphasis>
|
||
perfect flower with pistil/partly developed caryopsis
|
||
<emphasis bold="true" pageId="68" pageNumber="69">G</emphasis>
|
||
lodicules and rachilla internode
|
||
<emphasis bold="true" pageId="68" pageNumber="69">H</emphasis>
|
||
caryopsis ventral view, with sulcus and hilum
|
||
<emphasis bold="true" pageId="68" pageNumber="69">I</emphasis>
|
||
caryopsis dorsal view.Drawn from the holotype collection (
|
||
<emphasis italics="true" pageId="68" pageNumber="69">Wendt 883 & Riskind</emphasis>
|
||
).
|
||
</paragraph>
|
||
</caption>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |