116 lines
9.2 KiB
XML
116 lines
9.2 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/phytokeys.126.34096" ID-PMC="PMC6650443" ID-Pensoft-Pub="1314-2003-126-89" ID-Pensoft-UUID="FFC2D06D486FF317CE32972BDE2BFF93" ID-PubMed="31360096" ID-Zenodo-Dep="3348547" ModsDocID="1314-2003-126-89" checkinTime="1563287727035" checkinUser="pensoft" docAuthor="Peterson, Paul M., Romaschenko, Konstantin, Soreng, Robert J. & Reyna, Jesus Valdes" docDate="2019" docId="3DDD69F56C9854B08ED382E9BAC93284" docLanguage="en" docName="PhytoKeys 126: 89-125" docOrigin="PhytoKeys 126" docPubDate="2019-07-16" docSource="http://dx.doi.org/10.3897/phytokeys.126.34096" docTitle="Barkworthia Romasch., P. M. Peterson & Soreng, gen. nov." docType="treatment" docVersion="3" id="FFC2D06D486FF317CE32972BDE2BFF93" lastPageNumber="92" masterDocId="FFC2D06D486FF317CE32972BDE2BFF93" masterDocTitle="A key to the North American genera of Stipeae (Poaceae, Pooideae) with descriptions and taxonomic names for species of Eriocoma, Neotrinia, Oloptum, and five new genera: Barkworthia, x Eriosella, Pseudoeriocoma, Ptilagrostiella, and Thorneochloa" masterLastPageNumber="125" masterPageNumber="89" pageNumber="92" updateTime="1668139369136" 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>A key to the North American genera of Stipeae (Poaceae, Pooideae) with descriptions and taxonomic names for species of Eriocoma, Neotrinia, Oloptum, and five new genera: Barkworthia, x Eriosella, Pseudoeriocoma, Ptilagrostiella, and Thorneochloa</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>Peterson, Paul M.</mods:namePart>
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<mods:affiliation>Department of Botany MRC- 166, National Museum of Natural History, Smithsonian Institution, Washington, DC 20013 - 7012, USA</mods:affiliation>
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<mods:nameIdentifier type="email">peterson@si.edu</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>Romaschenko, Konstantin</mods:namePart>
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<mods:affiliation>Department of Botany MRC- 166, 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>Soreng, Robert J.</mods:namePart>
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<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0002-8358-4915</mods:nameIdentifier>
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<mods:affiliation>Department of Botany MRC- 166, 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>Reyna, Jesus Valdes</mods:namePart>
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<mods:affiliation>Departamento de Botanica, Universidad Autonoma Agraria Antonio Narro, Saltillo, C. P. 25315, Mexico</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>2019</mods:date>
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<mods:detail type="pubDate">
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<mods:number>2019-07-16</mods:number>
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</mods:detail>
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<mods:detail type="volume">
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<mods:number>126</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>89</mods:start>
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<mods:end>125</mods:end>
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</mods:extent>
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</mods:part>
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<mods:location>
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<mods:url>http://dx.doi.org/10.3897/phytokeys.126.34096</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.126.34096</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1314-2003-126-89</mods:identifier>
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<mods:identifier type="Pensoft-UUID">FFC2D06D486FF317CE32972BDE2BFF93</mods:identifier>
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<mods:identifier type="Zenodo-Dep">3348547</mods:identifier>
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</mods:mods>
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<treatment ID-GBIF-Taxon="182224877" LSID="urn:lsid:plazi:treatment:3DDD69F56C9854B08ED382E9BAC93284" httpUri="http://treatment.plazi.org/id/3DDD69F56C9854B08ED382E9BAC93284" lastPageNumber="92" pageId="3" pageNumber="92">
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<subSubSection pageId="3" pageNumber="92" type="nomenclature">
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<paragraph pageId="3" pageNumber="92">
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<taxonomicName LSID="3DDD69F5-6C98-54B0-8ED3-82E9BAC93284" authority="Romasch., P. M. Peterson & Soreng, gen. nov." authorityName="Romasch., P. M. Peterson & Soreng, gen. nov." class="Liliopsida" family="Poaceae" genus="Barkworthia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Barkworthia" order="Poales" pageId="3" pageNumber="92" phylum="Tracheophyta" rank="genus">Barkworthia Romasch., P.M.Peterson & Soreng, gen. nov.</taxonomicName>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="3" pageNumber="92" type="materials_examined">
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<paragraph pageId="3" pageNumber="92">
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<typeStatus>Type</typeStatus>
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.
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</paragraph>
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<paragraph pageId="3" pageNumber="92">
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<taxonomicName class="Liliopsida" family="Poaceae" genus="Barkworthia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Barkworthia stillmanii" order="Poales" pageId="3" pageNumber="92" phylum="Tracheophyta" rank="species" species="stillmanii">
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<emphasis italics="true" pageId="3" pageNumber="92">Barkworthia stillmanii</emphasis>
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</taxonomicName>
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(Bol.) Romasch., P.M. Peterson & Soreng (≡
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<taxonomicName authorityName="Bol" authorityYear="1872" class="Liliopsida" family="Poaceae" genus="Stipa" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Stipa stillmanii" order="Poales" pageId="3" pageNumber="92" phylum="Tracheophyta" rank="species" species="stillmanii">
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<emphasis italics="true" pageId="3" pageNumber="92">Stipa stillmanii</emphasis>
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</taxonomicName>
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Bol.).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="3" pageNumber="92" type="diagnosis">
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<paragraph pageId="3" pageNumber="92">Diagnosis.</paragraph>
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<paragraph pageId="3" pageNumber="92">
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<taxonomicName class="Liliopsida" family="Poaceae" genus="Barkworthia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Barkworthia" order="Poales" pageId="3" pageNumber="92" phylum="Tracheophyta" rank="genus">
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<emphasis italics="true" pageId="3" pageNumber="92">Barkworthia</emphasis>
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</taxonomicName>
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differs from
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<taxonomicName class="Liliopsida" family="Gramineae" genus="Piptatherum" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Piptatherum" order="Poales" pageId="3" pageNumber="92" phylum="Tracheophyta" rank="genus">
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<emphasis italics="true" pageId="3" pageNumber="92">Piptatherum</emphasis>
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</taxonomicName>
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P. Beauv. in having spikelets with a pilose callus, paleas with prolonged veins, and 2-lobed lemma apices with lobes 1-3 mm long; and differs from
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<taxonomicName class="Liliopsida" family="Poaceae" genus="Achnatherum" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Achnatherum" order="Poales" pageId="3" pageNumber="92" phylum="Tracheophyta" rank="genus">
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<emphasis italics="true" pageId="3" pageNumber="92">Achnatherum</emphasis>
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</taxonomicName>
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in having saw-like lemma epidermal pattern, not the maize-like pattern characteristic of all achnatheroid grasses.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="3" pageNumber="92" type="description">
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<paragraph pageId="3" pageNumber="92">Description.</paragraph>
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<paragraph pageId="3" pageNumber="92">Plants short-rhizomatous perennials. Culms 60-150 cm tall with 2-5 puberulent nodes, 2-5 mm thick below, often geniculate. Leaf sheaths mostly glabrous or distally ciliate; collars glabrous or pubescent; ligules 0.2-0.5 mm long, membranous, apex truncate; blades 15-30 cm long; 3-7 mm wide, scabrous. Panicles 10-24 cm long, 1.5-3 cm wide, contracted; branches appressed, ascending, lower branches 2-3.5 cm long. Spikelets 14-18 mm long, lanceolate, subterete with one fertile floret without rachilla extension, disarticulation above the glumes; glumes 14-18 mm long, single-awned, the awns 2-3 mm long; lower glumes 1-3-veined, upper glumes 3-5-veined; florets 8-10 mm long, fusiform; calluses 0.5-1.2 mm long, rounded, pilose; lemmas 3-veined, evenly hairy, the hairs about 1.5 mm long, apex 2-lobed, the lobes 1-3 mm long with awnlike tips, narrow; lemma epidermal pattern saw-like; fundamental cells of variable length with sinuous sidewalls 2-7 times longer than silica cells irregularly alternating; silica bodies elongated-rectangular with straight or very shallow contracted sidewalls; cork cells not prominent; lemmatal awns 18-30 mm long, terminal, awned from the sinus, scabrous, 1 or 2-geniculate, persistent; paleas as long or longer than lemmas, 2-veined, hairy, the veins 1-3 mm prolonged reaching almost to the tip of the lemma lobes; anthers 4-6 mm long, penicillate, 3 in number; lodicules 3; stigmas 2. Caryopses fusiform, pericarp adherent, hilum linear.</paragraph>
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</subSubSection>
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<subSubSection pageId="3" pageNumber="92" type="etymology">
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<paragraph pageId="3" pageNumber="92">Etymology.</paragraph>
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<paragraph pageId="3" pageNumber="92">
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The generic name honors Mary Elizabeth Barkworth, a well-known American agrostologist, who has contributed many papers investigating the taxonomy of the
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<taxonomicName family="Poaceae" kingdom="Plantae" lsidName="" order="Poales" pageId="3" pageNumber="92" rank="tribe" tribe="Stipeae">Stipeae</taxonomicName>
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.
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</paragraph>
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</subSubSection>
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</treatment>
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</document> |