250 lines
38 KiB
XML
250 lines
38 KiB
XML
<document id="90CA5B68D088DD4D9CD2F47473945A17" ID-DOI="10.11646/phytotaxa.207.3.5" ID-ISSN="1179-3163" ID-Zenodo-Dep="13637299" IM.bibliography_approvedBy="felipe" IM.illustrations_approvedBy="felipe" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" IM.treatmentCitations_approvedBy="felipe" IM.treatments_approvedBy="felipe" checkinTime="1725337009674" checkinUser="felipe" docAuthor="Sterrenburg, Frithjof A. S., Stidolph, Stuart R., Sar, Eugenia A. & Sunesen, Inés" docDate="2015" docId="8F0876277C16FFD3FFE757D5FEB1FE8C" docLanguage="en" docName="phytotaxa.207.3.5.pdf" docOrigin="Phytotaxa 207 (3)" docSource="http://dx.doi.org/10.11646/phytotaxa.207.3.5" docStyle="DocumentStyle:96748F8F1B6C902996E134952A3A36B9.13:Phytotaxa.2014-.journal_article" docStyleId="96748F8F1B6C902996E134952A3A36B9" docStyleName="Phytotaxa.2014-.journal_article" docStyleVersion="13" docTitle="Pleurosigma subrectum Cleve 1880" docType="treatment" docVersion="2" lastPageNumber="277" masterDocId="73310E5F7C14FFD7FF6F5721FF94FFE1" masterDocTitle="A comparative study of Pleurosigma subrectum and P. acus (Bacillariophyta)" masterLastPageNumber="280" masterPageNumber="273" pageNumber="275" updateTime="1725341224209" updateUser="ExternalLinkService" zenodo-license-figures="UNSPECIFIED" zenodo-license-treatments="UNSPECIFIED">
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<mods:titleInfo id="ADDC7D1DF8F4E71DF57431B266152864">
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<mods:title id="982B4FCF147B86FF27C11EB90DB468F3">A comparative study of Pleurosigma subrectum and P. acus (Bacillariophyta)</mods:title>
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<mods:name id="D3093FDD7F70D1CA478F0352D20BBA24" type="personal">
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<mods:namePart id="D6B77A710F69ABC2705F3E34F04F158D">Sterrenburg, Frithjof A. S.</mods:namePart>
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<mods:affiliation id="5CDE24DDA05733280FEB29860206732C">Stationsweg 158, 1852 LN Heiloo, the Netherlands.</mods:affiliation>
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<mods:roleTerm id="B720EBF40F033A52837D719244B7C3D0">Author</mods:roleTerm>
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<mods:namePart id="0B3D2B45DDA5741D4050E3A3A7C2D1D8">Stidolph, Stuart R.</mods:namePart>
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<mods:affiliation id="8B32A55984A56E369E9CB2C684215EE6">3 / 15 Gebbie Rd., Taradale, Napier, New Zealand.</mods:affiliation>
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<mods:name id="B398294273B3BD37B0848B8B9AB0D5F5" type="personal">
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<mods:namePart id="76006077B622F45DBCFB6582A451CD58">Sar, Eugenia A.</mods:namePart>
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<mods:affiliation id="288801683CB1BC920B13A55676F90ADB">División Ficología, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, Paseo del Bosque s / n, 1900 La Plata, Argentina.</mods:affiliation>
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<mods:namePart id="33160938BF4686B5E766975C9BCEA920">Sunesen, Inés</mods:namePart>
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<mods:affiliation id="14640050B4298388F0291DBBE90C4040">División Ficología, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, Paseo del Bosque s / n, 1900 La Plata, Argentina.</mods:affiliation>
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<mods:title id="96B42873DF3E4A5546D60FF1A5E9B297">Phytotaxa</mods:title>
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<mods:part id="0E13AB136D1715E5B1EAD1773F3D907E">
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<mods:date id="25A4BAE2607BC997655DE7B11C0F1D7C">2015</mods:date>
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<mods:number id="3E887A5236C9A5AE6C5BCEB9552BFC46">207</mods:number>
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<mods:number id="24DCE6267CDF915B9619BFA28F777F9C">3</mods:number>
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<treatment id="8F0876277C16FFD3FFE757D5FEB1FE8C" ID-DOI="http://doi.org/10.5281/zenodo.13637303" ID-Zenodo-Dep="13637303" LSID="urn:lsid:plazi:treatment:8F0876277C16FFD3FFE757D5FEB1FE8C" httpUri="http://treatment.plazi.org/id/8F0876277C16FFD3FFE757D5FEB1FE8C" lastPageId="4" lastPageNumber="277" pageId="2" pageNumber="275">
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<subSubSection id="4FBB94BA7C16FFD5FFE757D5FD29FE7E" pageId="2" pageNumber="275" type="nomenclature">
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<paragraph id="071EC7317C16FFD5FFE757D5FAB3FEEE" blockId="2.[136,1319,244,271]" box="[136,1319,244,271]" pageId="2" pageNumber="275">
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<heading id="5C56705D7C16FFD5FFE757D5FAB3FEEE" box="[136,1319,244,271]" fontSize="11" level="2" pageId="2" pageNumber="275" reason="3">
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<treatmentCitationGroup id="27B1E01F7C16FFD5FFE757D5FAB3FEEE" box="[136,1319,244,271]" pageId="2" pageNumber="275">
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<taxonomicName id="C0A1BCB27C16FFD5FFE757D5FE77FEEE" authority="Cleve" authorityName="Cleve" authorityYear="1880" box="[136,483,244,271]" class="Bacillariophyceae" family="Pleurosigmataceae" genus="Pleurosigma" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="2" pageNumber="275" phylum="Bacillariophyta" rank="species" species="subrectum">
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<emphasis id="35D51B237C16FFD5FFE757D5FE0EFEEE" bold="true" box="[136,410,244,271]" italics="true" pageId="2" pageNumber="275">Pleurosigma subrectum</emphasis>
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Cleve
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</taxonomicName>
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in
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<treatmentCitation id="8600E1207C16FFD5FD6857D7FCA9FEEE" author="Cleve, P. T. & Grunow, A." box="[519,829,246,271]" page="53" pageId="2" pageNumber="275" year="1880">
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<bibRefCitation id="6330BAC07C16FFD5FD6857D7FCA9FEEE" author="Cleve, P. T. & Grunow, A." box="[519,829,246,271]" pageId="2" pageNumber="275" pagination="1 - 121" refId="ref4419" refString="Cleve, P. T. & Grunow, A. (1880) Beitrage zur Kenntniss der Arctischen Diatomeen. Kongliga Svenska Vetenskaps Akademiens Handlingar 17 (2): 1 - 121." type="journal article" year="1880">Cleve & Grunow (1880: 53</bibRefCitation>
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</treatmentCitation>
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, pl. 3, fig. 72) (
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<figureCitation id="9F9ADBB47C16FFD5FC8557D7FBCCFEEE" box="[1002,1112,246,271]" captionStart="FIGURES 1−6" captionStartId="2.[136,243,1911,1932]" captionTargetBox="[152,1436,510,1882]" captionTargetId="figure-125@2.[151,1436,509,1883]" captionTargetPageId="2" captionText="FIGURES 1−6. Pleurosigma subrectum, type material, LM. 1, 2. Survey of small and large specimens. 3−6. Lectotype specimen. All BF except Fig. 5, DIC, stack of 6 images. Scale bars = 50 μm (Figs. 1, 2), 10 μm (Figs. 3, 4), 5 μm (Figs. 5, 6)." figureDoi="http://doi.org/10.5281/zenodo.13637301" httpUri="https://zenodo.org/record/13637301/files/figure.png" pageId="2" pageNumber="275">Figs. 1−6</figureCitation>
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: LM, 7−11: SEM)
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</treatmentCitationGroup>
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</heading>
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</paragraph>
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<paragraph id="071EC7317C16FFD5FFE7561FFD29FE7E" blockId="2.[136,1451,318,487]" pageId="2" pageNumber="275">
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<materialsCitation id="B7C9CD6C7C16FFD5FFE7561FFD29FE7E" collectionCode="T, BRM" collectorName="E. Weissflog" latitude="-6.0" longLatPrecision="7835" longitude="3.2" pageId="2" pageNumber="275" specimenCode="ZU 9" specimenCount="1" typeStatus="lectotype">
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<emphasis id="35D51B237C16FFD5FFE7561FFEB7FEB6" bold="true" box="[136,291,318,343]" pageId="2" pageNumber="275">
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<typeStatus id="D81A79937C16FFD5FFE7561FFE95FEB6" box="[136,257,318,343]" pageId="2" pageNumber="275" type="lectotype">Lectotype</typeStatus>
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:—
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</emphasis>
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“E251, Finnmark, Maasö, a, P.
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<collectionCode id="61B05FF47C16FFD5FDFD561FFD30FEB6" box="[658,676,318,343]" name="Tavera, Department of Geology and Geophysics" pageId="2" pageNumber="275">T</collectionCode>
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. Cleve, 12.1881, von
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<collectorName id="AA54A2E77C16FFD5FCC1561FFBD0FEB6" box="[942,1092,318,343]" pageId="2" pageNumber="275">E. Weissflog</collectorName>
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”
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<emphasis id="35D51B237C16FFD5FB34561FFA88FEB6" bold="true" box="[1115,1308,318,343]" pageId="2" pageNumber="275">here designated</emphasis>
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, geographic coordinates
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<geoCoordinate id="6295A1F67C16FFD5FE7F5643FEEAFE9A" box="[272,382,354,379]" degrees="71" direction="north" minutes="00" orientation="latitude" pageId="2" pageNumber="275" precision="925" value="71.0">71° 00’ N</geoCoordinate>
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,
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<geoCoordinate id="6295A1F67C16FFD5FEE65643FE60FE9A" box="[393,500,354,379]" degrees="24" direction="east" minutes="00" orientation="longitude" pageId="2" pageNumber="275" precision="925" value="24.0">24° 00’ E</geoCoordinate>
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.
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<collectionCode id="61B05FF47C16FFD5FE905643FDD7FE9A" box="[511,579,354,379]" country="Germany" httpUri="http://biocol.org/urn:lsid:biocol.org:col:14903" lsid="urn:lsid:biocol.org:col:14903" name="Alfred-Wegener-Institut für Polar- und Meeresforschung" pageId="2" pageNumber="275" type="Herbarium">BRM</collectionCode>
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!
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<specimenCode id="57076F4A7C16FFD5FD225643FD13FE9A" box="[589,647,354,379]" collectionCode="BRM" country="Germany" httpUri="http://biocol.org/urn:lsid:biocol.org:col:14903" lsid="urn:lsid:biocol.org:col:14903" name="Alfred-Wegener-Institut für Polar- und Meeresforschung" pageId="2" pageNumber="275" type="Herbarium">ZU 9</specimenCode>
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/91, slide coordinates
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<geoCoordinate id="6295A1F67C16FFD5FC145643FC2CFE9A" box="[891,952,354,379]" degrees="3.2" direction="east" orientation="longitude" pageId="2" pageNumber="275" precision="5555" value="3.2">3.2 E</geoCoordinate>
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,
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<geoCoordinate id="6295A1F67C16FFD5FCAC5643FC6BFE9A" box="[963,1023,354,379]" degrees="6.0" direction="south" orientation="latitude" pageId="2" pageNumber="275" precision="5555" value="-6.0">6.0 S</geoCoordinate>
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. This material is a subsample of
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<bibRefCitation id="6330BAC07C16FFD5FA055643FEADFE7E" author="Cleve, P. T. & Moller, J. D." pageId="2" pageNumber="275" refId="ref4378" refString="Cleve, P. T. & Moller, J. D. (1877 - 1882) Collection of 324 diatom slides with accompanying analyses of A. Grunow. Parts 1 - 6. Uppsala, 38 pp." type="book" year="1877">Cleve & Möller (1877</bibRefCitation>
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−1882) #312, “Finnmark, Maasö”.
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</materialsCitation>
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</paragraph>
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</subSubSection>
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<subSubSection id="4FBB94BA7C16FFD3FFD2568BFE7BFF58" lastPageId="4" lastPageNumber="277" pageId="2" pageNumber="275" type="description">
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<paragraph id="071EC7317C16FFD5FFD2568BFC18FE06" blockId="2.[136,1451,318,487]" pageId="2" pageNumber="275">
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<materialsCitation id="B7C9CD6C7C16FFD5FFD2568BFC2DFE22" box="[189,953,426,451]" collectionCode="BM" latitude="-5.7" longLatPrecision="7837" longitude="6.4" pageId="2" pageNumber="275" specimenCode="BM 13071" specimenCount="1" typeStatus="Isolectotypes">
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<emphasis id="35D51B237C16FFD5FFD2568BFEE9FE22" bold="true" box="[189,381,426,451]" pageId="2" pageNumber="275">
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<typeStatus id="D81A79937C16FFD5FFD2568BFECEFE22" box="[189,346,426,451]" pageId="2" pageNumber="275" type="isolectotype">Isolectotypes</typeStatus>
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:—
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</emphasis>
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In slide
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<specimenCode id="57076F4A7C16FFD5FEB8568BFDDBFE22" box="[471,591,426,451]" collectionCode="BM" country="United Kingdom" name="Bristol Museum" pageId="2" pageNumber="275">BM 13071</specimenCode>
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at slide coordinates
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<geoCoordinate id="6295A1F67C16FFD5FC5B568BFCE5FE22" box="[820,881,426,451]" degrees="6.4" direction="east" orientation="longitude" pageId="2" pageNumber="275" precision="5555" value="6.4">6.4 E</geoCoordinate>
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,
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<geoCoordinate id="6295A1F67C16FFD5FC12568BFC2DFE22" box="[893,953,426,451]" degrees="5.7" direction="south" orientation="latitude" pageId="2" pageNumber="275" precision="5555" value="-5.7">5.7 S</geoCoordinate>
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</materialsCitation>
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<materialsCitation id="B7C9CD6C7C16FFD5FCD6568BFBC5FE22" box="[953,1105,426,451]" collectionCode="BM" isTailEnumeration="true" latitude="-8.4" longLatPrecision="7814" longitude="11.8" pageId="2" pageNumber="275" specimenCount="1" typeStatus="Isolectotypes">
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;
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<geoCoordinate id="6295A1F67C16FFD5FCAA568BFB9BFE22" box="[965,1039,426,451]" degrees="11.8" direction="east" orientation="longitude" pageId="2" pageNumber="275" precision="5555" value="11.8">11.8 E</geoCoordinate>
|
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,
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<geoCoordinate id="6295A1F67C16FFD5FB74568BFBC5FE22" box="[1051,1105,426,451]" degrees="8.4" direction="south" orientation="latitude" pageId="2" pageNumber="275" precision="5555" value="-8.4">8.4S</geoCoordinate>
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</materialsCitation>
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;
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<geoCoordinate id="6295A1F67C16FFD5FB33568BFB32FE22" box="[1116,1190,426,451]" degrees="11.4" direction="east" orientation="longitude" pageId="2" pageNumber="275" precision="5555" value="11.4">11.4 E</geoCoordinate>
|
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,
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<geoCoordinate id="6295A1F67C16FFD5FBDD568BFB7AFE22" box="[1202,1262,426,451]" degrees="7.8" direction="south" orientation="latitude" pageId="2" pageNumber="275" precision="5555" value="-7.8">7.8 S</geoCoordinate>
|
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;
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||
<geoCoordinate id="6295A1F67C16FFD5FB95568BFAA3FE22" box="[1274,1335,426,451]" degrees="4.6" direction="east" orientation="longitude" pageId="2" pageNumber="275" precision="5555" value="4.6">4.6 E</geoCoordinate>
|
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,
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||
<geoCoordinate id="6295A1F67C16FFD5FA2C568BFAE9FE22" box="[1347,1405,426,451]" degrees="8.0" direction="south" orientation="latitude" pageId="2" pageNumber="275" precision="5555" value="-8.0">8.0 S</geoCoordinate>
|
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and
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<geoCoordinate id="6295A1F67C16FFD5FFE756EFFF47FE06" box="[136,211,462,487]" degrees="10.1" direction="east" orientation="longitude" pageId="2" pageNumber="275" precision="5555" value="10.1">10.1 E</geoCoordinate>
|
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,
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||
<geoCoordinate id="6295A1F67C16FFD5FFB056EFFEBDFE06" box="[223,297,462,487]" degrees="12.0" direction="south" orientation="latitude" pageId="2" pageNumber="275" precision="5555" value="-12.0">12.0 S</geoCoordinate>
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; also marked on slides S 123001-01 and S 123001-02.
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||
</paragraph>
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||
<caption id="53DE97B97C16FFD5FFE75056FB05F851" ID-DOI="http://doi.org/10.5281/zenodo.13637301" ID-Zenodo-Dep="13637301" httpUri="https://zenodo.org/record/13637301/files/figure.png" pageId="2" pageNumber="275" startId="2.[136,243,1911,1932]" targetBox="[152,1436,510,1882]" targetPageId="2" targetType="figure">
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<paragraph id="071EC7317C16FFD5FFE75056FB05F851" blockId="2.[136,1451,1911,1968]" pageId="2" pageNumber="275">
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||
<emphasis id="35D51B237C16FFD5FFE75056FEB0F86D" bold="true" box="[136,292,1911,1932]" pageId="2" pageNumber="275">FIGURES 1−6.</emphasis>
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||
<taxonomicName id="C0A1BCB27C16FFD5FE455056FD99F86D" authorityName="Cleve" authorityYear="1880" box="[298,525,1911,1932]" class="Bacillariophyceae" family="Pleurosigmataceae" genus="Pleurosigma" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="2" pageNumber="275" phylum="Bacillariophyta" rank="species" species="subrectum">
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<emphasis id="35D51B237C16FFD5FE455056FD99F86D" box="[298,525,1911,1932]" italics="true" pageId="2" pageNumber="275">Pleurosigma subrectum</emphasis>
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||
</taxonomicName>
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, type material, LM. 1, 2. Survey of small and large specimens. 3−6. Lectotype specimen. All BF except Fig. 5, DIC, stack of 6 images. Scale bars = 50 μm (Figs. 1, 2), 10 μm (Figs. 3, 4), 5 μm (Figs. 5, 6).
|
||
</paragraph>
|
||
</caption>
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||
<paragraph id="071EC7317C16FFD4FFD250C1FC38FF3C" blockId="2.[136,1452,2016,2077]" lastBlockId="3.[136,1452,160,509]" lastPageId="3" lastPageNumber="276" pageId="2" pageNumber="275">
|
||
<emphasis id="35D51B237C16FFD5FFD250C1FE09F818" bold="true" box="[189,413,2016,2041]" pageId="2" pageNumber="275">LM description:—</emphasis>
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Valves fusiform, non-sigmoid (
|
||
<figureCitation id="9F9ADBB47C16FFD5FD9650C1FCF2F818" box="[761,870,2016,2041]" captionStart="FIGURES 1−6" captionStartId="2.[136,243,1911,1932]" captionTargetBox="[152,1436,510,1882]" captionTargetId="figure-125@2.[151,1436,509,1883]" captionTargetPageId="2" captionText="FIGURES 1−6. Pleurosigma subrectum, type material, LM. 1, 2. Survey of small and large specimens. 3−6. Lectotype specimen. All BF except Fig. 5, DIC, stack of 6 images. Scale bars = 50 μm (Figs. 1, 2), 10 μm (Figs. 3, 4), 5 μm (Figs. 5, 6)." figureDoi="http://doi.org/10.5281/zenodo.13637301" httpUri="https://zenodo.org/record/13637301/files/figure.png" pageId="2" pageNumber="275">Figs. 1−4</figureCitation>
|
||
),
|
||
<emphasis id="35D51B237C16FFD5FC1450C1FC09F818" box="[891,925,2016,2041]" italics="true" pageId="2" pageNumber="275">ca.</emphasis>
|
||
160−280 μm long, 18−22 μm wide, with acute apices. Raphe sternum non-sigmoid throughout but helictoglossae very slightly deflected (
|
||
<figureCitation id="9F9ADBB47C16FFD5FB1C5F25FB23F7FC" box="[1139,1207,2052,2077]" captionStart="FIGURES 1−6" captionStartId="2.[136,243,1911,1932]" captionTargetBox="[152,1436,510,1882]" captionTargetId="figure-125@2.[151,1436,509,1883]" captionTargetPageId="2" captionText="FIGURES 1−6. Pleurosigma subrectum, type material, LM. 1, 2. Survey of small and large specimens. 3−6. Lectotype specimen. All BF except Fig. 5, DIC, stack of 6 images. Scale bars = 50 μm (Figs. 1, 2), 10 μm (Figs. 3, 4), 5 μm (Figs. 5, 6)." figureDoi="http://doi.org/10.5281/zenodo.13637301" httpUri="https://zenodo.org/record/13637301/files/figure.png" pageId="2" pageNumber="275">Fig. 5</figureCitation>
|
||
). Striae transverse
|
||
<emphasis id="35D51B237C16FFD5FAE55F25FA38F7FC" box="[1418,1452,2052,2077]" italics="true" pageId="2" pageNumber="275">ca.</emphasis>
|
||
<quantity id="C0596AD47C17FFD4FFE75781FF78FF58" box="[136,236,160,185]" metricMagnitude="-1" metricUnit="m" metricValue="5.08" metricValueMax="5.334" metricValueMin="4.826" pageId="3" pageNumber="276" unit="in" value="20.0" valueMax="21.0" valueMin="19.0">19−21 in</quantity>
|
||
10 μm, oblique
|
||
<emphasis id="35D51B237C17FFD4FEF05781FE55FF58" box="[415,449,160,185]" italics="true" pageId="3" pageNumber="276">ca.</emphasis>
|
||
<quantity id="C0596AD47C17FFD4FEA85781FDBEFF58" box="[455,554,160,185]" metricMagnitude="-1" metricUnit="m" metricValue="4.191" metricValueMax="4.572" metricValueMin="3.81" pageId="3" pageNumber="276" unit="in" value="16.5" valueMax="18.0" valueMin="15.0">15−18 in</quantity>
|
||
10 μm, stria angle 63−68° (
|
||
<figureCitation id="9F9ADBB47C17FFD4FC315781FC35FF58" box="[862,929,160,185]" captionStart="FIGURES 1−6" captionStartId="2.[136,243,1911,1932]" captionTargetBox="[152,1436,510,1882]" captionTargetId="figure-125@2.[151,1436,509,1883]" captionTargetPageId="2" captionText="FIGURES 1−6. Pleurosigma subrectum, type material, LM. 1, 2. Survey of small and large specimens. 3−6. Lectotype specimen. All BF except Fig. 5, DIC, stack of 6 images. Scale bars = 50 μm (Figs. 1, 2), 10 μm (Figs. 3, 4), 5 μm (Figs. 5, 6)." figureDoi="http://doi.org/10.5281/zenodo.13637301" httpUri="https://zenodo.org/record/13637301/files/figure.png" pageId="3" pageNumber="276">Fig. 6</figureCitation>
|
||
). Central area small, round (
|
||
<figureCitation id="9F9ADBB47C17FFD4FBB35781FAD1FF58" box="[1244,1349,160,185]" captionStart="FIGURES 1−6" captionStartId="2.[136,243,1911,1932]" captionTargetBox="[152,1436,510,1882]" captionTargetId="figure-125@2.[151,1436,509,1883]" captionTargetPageId="2" captionText="FIGURES 1−6. Pleurosigma subrectum, type material, LM. 1, 2. Survey of small and large specimens. 3−6. Lectotype specimen. All BF except Fig. 5, DIC, stack of 6 images. Scale bars = 50 μm (Figs. 1, 2), 10 μm (Figs. 3, 4), 5 μm (Figs. 5, 6)." figureDoi="http://doi.org/10.5281/zenodo.13637301" httpUri="https://zenodo.org/record/13637301/files/figure.png" pageId="3" pageNumber="276">Figs. 3, 6</figureCitation>
|
||
). Central raphe fissures long, almost overlapping and slightly undulating (
|
||
<figureCitation id="9F9ADBB47C17FFD4FC3557E5FC0AFF3C" box="[858,926,196,221]" captionStart="FIGURES 1−6" captionStartId="2.[136,243,1911,1932]" captionTargetBox="[152,1436,510,1882]" captionTargetId="figure-125@2.[151,1436,509,1883]" captionTargetPageId="2" captionText="FIGURES 1−6. Pleurosigma subrectum, type material, LM. 1, 2. Survey of small and large specimens. 3−6. Lectotype specimen. All BF except Fig. 5, DIC, stack of 6 images. Scale bars = 50 μm (Figs. 1, 2), 10 μm (Figs. 3, 4), 5 μm (Figs. 5, 6)." figureDoi="http://doi.org/10.5281/zenodo.13637301" httpUri="https://zenodo.org/record/13637301/files/figure.png" pageId="3" pageNumber="276">Fig. 6</figureCitation>
|
||
).
|
||
</paragraph>
|
||
<paragraph id="071EC7317C17FFD4FFD257C9FD94FE1C" blockId="3.[136,1452,160,509]" pageId="3" pageNumber="276">
|
||
<emphasis id="35D51B237C17FFD4FFD257C9FE1CFEE0" bold="true" box="[189,392,232,257]" pageId="3" pageNumber="276">SEM description</emphasis>
|
||
:
|
||
<emphasis id="35D51B237C17FFD4FEE057C9FE2AFEE0" bold="true" box="[399,446,232,257]" pageId="3" pageNumber="276">—E</emphasis>
|
||
xternally, central raphe fissures long, deflected to the same side, almost overlapping (
|
||
<figureCitation id="9F9ADBB47C17FFD4FA1157C9FF0CFEC4" captionStart="FIGURES 7−11" captionStartId="3.[136,243,1882,1903]" captionTargetBox="[151,1436,533,1857]" captionTargetId="figure-191@3.[151,1436,533,1857]" captionTargetPageId="3" captionText="FIGURES 7−11. Pleurosigma subrectum, type material, SEM. Fig. 7. Valve centre, external. Central raphe fissures almost overlap. Fig. 8. Valve apex, external. Top arrow marks apical pore, bottom arrow marks accessory fissure terminating within raphe “hook”. Fig. 9. Valve centre, internal. Note double areolar openings (see enlarged inset) and elevated central raphe nodule. Fig. 10. Valve apex, internal. Prominent helictoglossa, arrow marks apical pore (see enlarged inset). Fig. 11. Broken valve shows hollow columns (white arrow) with additional minute cavities (black arrows). Scale bars = 10 μm (Figs 7, 9), 5 μm (Figs 8, 10), 1 μm (Fig. 11)." figureDoi="http://doi.org/10.5281/zenodo.13637305" httpUri="https://zenodo.org/record/13637305/files/figure.png" pageId="3" pageNumber="276">Fig. 7</figureCitation>
|
||
). Apical raphe fissures sharply deflected and terminally strongly recurving forming a hook (
|
||
<figureCitation id="9F9ADBB47C17FFD4FBF8562DFB4FFEC4" box="[1175,1243,268,293]" captionStart="FIGURES 7−11" captionStartId="3.[136,243,1882,1903]" captionTargetBox="[151,1436,533,1857]" captionTargetId="figure-191@3.[151,1436,533,1857]" captionTargetPageId="3" captionText="FIGURES 7−11. Pleurosigma subrectum, type material, SEM. Fig. 7. Valve centre, external. Central raphe fissures almost overlap. Fig. 8. Valve apex, external. Top arrow marks apical pore, bottom arrow marks accessory fissure terminating within raphe “hook”. Fig. 9. Valve centre, internal. Note double areolar openings (see enlarged inset) and elevated central raphe nodule. Fig. 10. Valve apex, internal. Prominent helictoglossa, arrow marks apical pore (see enlarged inset). Fig. 11. Broken valve shows hollow columns (white arrow) with additional minute cavities (black arrows). Scale bars = 10 μm (Figs 7, 9), 5 μm (Figs 8, 10), 1 μm (Fig. 11)." figureDoi="http://doi.org/10.5281/zenodo.13637305" httpUri="https://zenodo.org/record/13637305/files/figure.png" pageId="3" pageNumber="276">Fig. 8</figureCitation>
|
||
). A long accessory fissure terminates within this hook (
|
||
<figureCitation id="9F9ADBB47C17FFD4FD4B5611FDFDFEA8" box="[548,617,304,329]" captionStart="FIGURES 7−11" captionStartId="3.[136,243,1882,1903]" captionTargetBox="[151,1436,533,1857]" captionTargetId="figure-191@3.[151,1436,533,1857]" captionTargetPageId="3" captionText="FIGURES 7−11. Pleurosigma subrectum, type material, SEM. Fig. 7. Valve centre, external. Central raphe fissures almost overlap. Fig. 8. Valve apex, external. Top arrow marks apical pore, bottom arrow marks accessory fissure terminating within raphe “hook”. Fig. 9. Valve centre, internal. Note double areolar openings (see enlarged inset) and elevated central raphe nodule. Fig. 10. Valve apex, internal. Prominent helictoglossa, arrow marks apical pore (see enlarged inset). Fig. 11. Broken valve shows hollow columns (white arrow) with additional minute cavities (black arrows). Scale bars = 10 μm (Figs 7, 9), 5 μm (Figs 8, 10), 1 μm (Fig. 11)." figureDoi="http://doi.org/10.5281/zenodo.13637305" httpUri="https://zenodo.org/record/13637305/files/figure.png" pageId="3" pageNumber="276">Fig. 8</figureCitation>
|
||
, bottom arrow) and there is an accessory apical pore (
|
||
<figureCitation id="9F9ADBB47C17FFD4FBB65611FA8AFEA8" box="[1241,1310,304,329]" captionStart="FIGURES 7−11" captionStartId="3.[136,243,1882,1903]" captionTargetBox="[151,1436,533,1857]" captionTargetId="figure-191@3.[151,1436,533,1857]" captionTargetPageId="3" captionText="FIGURES 7−11. Pleurosigma subrectum, type material, SEM. Fig. 7. Valve centre, external. Central raphe fissures almost overlap. Fig. 8. Valve apex, external. Top arrow marks apical pore, bottom arrow marks accessory fissure terminating within raphe “hook”. Fig. 9. Valve centre, internal. Note double areolar openings (see enlarged inset) and elevated central raphe nodule. Fig. 10. Valve apex, internal. Prominent helictoglossa, arrow marks apical pore (see enlarged inset). Fig. 11. Broken valve shows hollow columns (white arrow) with additional minute cavities (black arrows). Scale bars = 10 μm (Figs 7, 9), 5 μm (Figs 8, 10), 1 μm (Fig. 11)." figureDoi="http://doi.org/10.5281/zenodo.13637305" httpUri="https://zenodo.org/record/13637305/files/figure.png" pageId="3" pageNumber="276">Fig. 8</figureCitation>
|
||
, top arrow). Internally, areolar openings generally bisected by a small bar (
|
||
<figureCitation id="9F9ADBB47C17FFD4FC0A5675FC3FFE8C" box="[869,939,340,365]" captionStart="FIGURES 7−11" captionStartId="3.[136,243,1882,1903]" captionTargetBox="[151,1436,533,1857]" captionTargetId="figure-191@3.[151,1436,533,1857]" captionTargetPageId="3" captionText="FIGURES 7−11. Pleurosigma subrectum, type material, SEM. Fig. 7. Valve centre, external. Central raphe fissures almost overlap. Fig. 8. Valve apex, external. Top arrow marks apical pore, bottom arrow marks accessory fissure terminating within raphe “hook”. Fig. 9. Valve centre, internal. Note double areolar openings (see enlarged inset) and elevated central raphe nodule. Fig. 10. Valve apex, internal. Prominent helictoglossa, arrow marks apical pore (see enlarged inset). Fig. 11. Broken valve shows hollow columns (white arrow) with additional minute cavities (black arrows). Scale bars = 10 μm (Figs 7, 9), 5 μm (Figs 8, 10), 1 μm (Fig. 11)." figureDoi="http://doi.org/10.5281/zenodo.13637305" httpUri="https://zenodo.org/record/13637305/files/figure.png" pageId="3" pageNumber="276">Fig. 9</figureCitation>
|
||
<emphasis id="35D51B237C17FFD4FCC45675FC53FE8C" bold="true" box="[939,967,340,365]" pageId="3" pageNumber="276">—</emphasis>
|
||
see also inset,
|
||
<figureCitation id="9F9ADBB47C17FFD4FB1A5675FB5DFE8C" box="[1141,1225,340,365]" captionStart="FIGURES 7−11" captionStartId="3.[136,243,1882,1903]" captionTargetBox="[151,1436,533,1857]" captionTargetId="figure-191@3.[151,1436,533,1857]" captionTargetPageId="3" captionText="FIGURES 7−11. Pleurosigma subrectum, type material, SEM. Fig. 7. Valve centre, external. Central raphe fissures almost overlap. Fig. 8. Valve apex, external. Top arrow marks apical pore, bottom arrow marks accessory fissure terminating within raphe “hook”. Fig. 9. Valve centre, internal. Note double areolar openings (see enlarged inset) and elevated central raphe nodule. Fig. 10. Valve apex, internal. Prominent helictoglossa, arrow marks apical pore (see enlarged inset). Fig. 11. Broken valve shows hollow columns (white arrow) with additional minute cavities (black arrows). Scale bars = 10 μm (Figs 7, 9), 5 μm (Figs 8, 10), 1 μm (Fig. 11)." figureDoi="http://doi.org/10.5281/zenodo.13637305" httpUri="https://zenodo.org/record/13637305/files/figure.png" pageId="3" pageNumber="276">Fig. 10</figureCitation>
|
||
) except around the elevated central raphe nodule, which is enclosed within two small central bars of approximately equal length (
|
||
<figureCitation id="9F9ADBB47C17FFD4FA115659FF0CFE54" captionStart="FIGURES 7−11" captionStartId="3.[136,243,1882,1903]" captionTargetBox="[151,1436,533,1857]" captionTargetId="figure-191@3.[151,1436,533,1857]" captionTargetPageId="3" captionText="FIGURES 7−11. Pleurosigma subrectum, type material, SEM. Fig. 7. Valve centre, external. Central raphe fissures almost overlap. Fig. 8. Valve apex, external. Top arrow marks apical pore, bottom arrow marks accessory fissure terminating within raphe “hook”. Fig. 9. Valve centre, internal. Note double areolar openings (see enlarged inset) and elevated central raphe nodule. Fig. 10. Valve apex, internal. Prominent helictoglossa, arrow marks apical pore (see enlarged inset). Fig. 11. Broken valve shows hollow columns (white arrow) with additional minute cavities (black arrows). Scale bars = 10 μm (Figs 7, 9), 5 μm (Figs 8, 10), 1 μm (Fig. 11)." figureDoi="http://doi.org/10.5281/zenodo.13637305" httpUri="https://zenodo.org/record/13637305/files/figure.png" pageId="3" pageNumber="276">Fig. 9</figureCitation>
|
||
). Helictoglossa prominent, slightly deflected, near the tip there is a small apical pore (
|
||
<figureCitation id="9F9ADBB47C17FFD4FB1156BDFB46FE54" box="[1150,1234,412,437]" captionStart="FIGURES 7−11" captionStartId="3.[136,243,1882,1903]" captionTargetBox="[151,1436,533,1857]" captionTargetId="figure-191@3.[151,1436,533,1857]" captionTargetPageId="3" captionText="FIGURES 7−11. Pleurosigma subrectum, type material, SEM. Fig. 7. Valve centre, external. Central raphe fissures almost overlap. Fig. 8. Valve apex, external. Top arrow marks apical pore, bottom arrow marks accessory fissure terminating within raphe “hook”. Fig. 9. Valve centre, internal. Note double areolar openings (see enlarged inset) and elevated central raphe nodule. Fig. 10. Valve apex, internal. Prominent helictoglossa, arrow marks apical pore (see enlarged inset). Fig. 11. Broken valve shows hollow columns (white arrow) with additional minute cavities (black arrows). Scale bars = 10 μm (Figs 7, 9), 5 μm (Figs 8, 10), 1 μm (Fig. 11)." figureDoi="http://doi.org/10.5281/zenodo.13637305" httpUri="https://zenodo.org/record/13637305/files/figure.png" pageId="3" pageNumber="276">Fig. 10</figureCitation>
|
||
, arrow). Basal and tegumental layers joined by columns (
|
||
<figureCitation id="9F9ADBB47C17FFD4FD5C56E1FD10FE38" box="[563,644,448,473]" captionStart="FIGURES 7−11" captionStartId="3.[136,243,1882,1903]" captionTargetBox="[151,1436,533,1857]" captionTargetId="figure-191@3.[151,1436,533,1857]" captionTargetPageId="3" captionText="FIGURES 7−11. Pleurosigma subrectum, type material, SEM. Fig. 7. Valve centre, external. Central raphe fissures almost overlap. Fig. 8. Valve apex, external. Top arrow marks apical pore, bottom arrow marks accessory fissure terminating within raphe “hook”. Fig. 9. Valve centre, internal. Note double areolar openings (see enlarged inset) and elevated central raphe nodule. Fig. 10. Valve apex, internal. Prominent helictoglossa, arrow marks apical pore (see enlarged inset). Fig. 11. Broken valve shows hollow columns (white arrow) with additional minute cavities (black arrows). Scale bars = 10 μm (Figs 7, 9), 5 μm (Figs 8, 10), 1 μm (Fig. 11)." figureDoi="http://doi.org/10.5281/zenodo.13637305" httpUri="https://zenodo.org/record/13637305/files/figure.png" pageId="3" pageNumber="276">Fig. 11</figureCitation>
|
||
), which are hollow (white arrow in
|
||
<figureCitation id="9F9ADBB47C17FFD4FB7956E1FBF0FE38" box="[1046,1124,448,473]" captionStart="FIGURES 7−11" captionStartId="3.[136,243,1882,1903]" captionTargetBox="[151,1436,533,1857]" captionTargetId="figure-191@3.[151,1436,533,1857]" captionTargetPageId="3" captionText="FIGURES 7−11. Pleurosigma subrectum, type material, SEM. Fig. 7. Valve centre, external. Central raphe fissures almost overlap. Fig. 8. Valve apex, external. Top arrow marks apical pore, bottom arrow marks accessory fissure terminating within raphe “hook”. Fig. 9. Valve centre, internal. Note double areolar openings (see enlarged inset) and elevated central raphe nodule. Fig. 10. Valve apex, internal. Prominent helictoglossa, arrow marks apical pore (see enlarged inset). Fig. 11. Broken valve shows hollow columns (white arrow) with additional minute cavities (black arrows). Scale bars = 10 μm (Figs 7, 9), 5 μm (Figs 8, 10), 1 μm (Fig. 11)." figureDoi="http://doi.org/10.5281/zenodo.13637305" httpUri="https://zenodo.org/record/13637305/files/figure.png" pageId="3" pageNumber="276">Fig. 11</figureCitation>
|
||
) and showing tiny additional cavities (black arrows in
|
||
<figureCitation id="9F9ADBB47C17FFD4FECD56C5FE66FE1C" box="[418,498,484,509]" captionStart="FIGURES 7−11" captionStartId="3.[136,243,1882,1903]" captionTargetBox="[151,1436,533,1857]" captionTargetId="figure-191@3.[151,1436,533,1857]" captionTargetPageId="3" captionText="FIGURES 7−11. Pleurosigma subrectum, type material, SEM. Fig. 7. Valve centre, external. Central raphe fissures almost overlap. Fig. 8. Valve apex, external. Top arrow marks apical pore, bottom arrow marks accessory fissure terminating within raphe “hook”. Fig. 9. Valve centre, internal. Note double areolar openings (see enlarged inset) and elevated central raphe nodule. Fig. 10. Valve apex, internal. Prominent helictoglossa, arrow marks apical pore (see enlarged inset). Fig. 11. Broken valve shows hollow columns (white arrow) with additional minute cavities (black arrows). Scale bars = 10 μm (Figs 7, 9), 5 μm (Figs 8, 10), 1 μm (Fig. 11)." figureDoi="http://doi.org/10.5281/zenodo.13637305" httpUri="https://zenodo.org/record/13637305/files/figure.png" pageId="3" pageNumber="276">Fig. 11</figureCitation>
|
||
).
|
||
</paragraph>
|
||
<caption id="53DE97B97C17FFD4FFE7507BFB06F81E" ID-DOI="http://doi.org/10.5281/zenodo.13637305" ID-Zenodo-Dep="13637305" httpUri="https://zenodo.org/record/13637305/files/figure.png" pageId="3" pageNumber="276" startId="3.[136,243,1882,1903]" targetBox="[151,1436,533,1857]" targetPageId="3" targetType="figure">
|
||
<paragraph id="071EC7317C17FFD4FFE7507BFB06F81E" blockId="3.[136,1453,1882,2047]" pageId="3" pageNumber="276">
|
||
<emphasis id="35D51B237C17FFD4FFE7507BFEA4F88E" bold="true" box="[136,304,1882,1903]" pageId="3" pageNumber="276">FIGURES 7−11.</emphasis>
|
||
<emphasis id="35D51B237C17FFD4FE59507BFDB4F88E" box="[310,544,1882,1903]" italics="true" pageId="3" pageNumber="276">
|
||
<taxonomicName id="C0A1BCB27C17FFD4FE59507BFD8FF88E" authorityName="Cleve" authorityYear="1880" box="[310,539,1882,1903]" class="Bacillariophyceae" family="Pleurosigmataceae" genus="Pleurosigma" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="3" pageNumber="276" phylum="Bacillariophyta" rank="species" species="subrectum">Pleurosigma subrectum</taxonomicName>
|
||
,
|
||
</emphasis>
|
||
type material, SEM. Fig. 7. Valve centre, external. Central raphe fissures almost overlap. Fig. 8. Valve apex, external. Top arrow marks apical pore, bottom arrow marks accessory fissure terminating within raphe “hook”. Fig. 9. Valve centre, internal. Note double areolar openings (see enlarged inset) and elevated central raphe nodule. Fig. 10. Valve apex, internal. Prominent helictoglossa, arrow marks apical pore (see enlarged inset). Fig. 11. Broken valve shows hollow columns (white arrow) with additional minute cavities (black arrows). Scale bars = 10 μm (Figs 7, 9), 5 μm (Figs 8, 10), 1 μm (Fig. 11).
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph id="071EC7317C10FFD3FFD25781FE7BFF58" blockId="4.[136,1452,160,365]" box="[189,495,160,185]" pageId="4" pageNumber="277">
|
||
<emphasis id="35D51B237C10FFD3FFD25781FEAAFF58" bold="true" box="[189,318,160,185]" pageId="4" pageNumber="277">Habitat:—</emphasis>
|
||
Littoral marine.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="4FBB94BA7C10FFD3FFD257E5FEB1FE8C" pageId="4" pageNumber="277" type="distribution">
|
||
<paragraph id="071EC7317C10FFD3FFD257E5FCF0FEE0" blockId="4.[136,1452,160,365]" pageId="4" pageNumber="277">
|
||
<emphasis id="35D51B237C10FFD3FFD257E5FEE1FF3C" bold="true" box="[189,373,196,221]" pageId="4" pageNumber="277">Distribution:—</emphasis>
|
||
<typeStatus id="D81A79937C10FFD3FE1A57E5FE39FF3C" box="[373,429,196,221]" pageId="4" pageNumber="277">Type</typeStatus>
|
||
material North Scandinavian coast, specimens matching the
|
||
<typeStatus id="D81A79937C10FFD3FB3857E5FB13FF3C" box="[1111,1159,196,221]" pageId="4" pageNumber="277">type</typeStatus>
|
||
were personally observed in materials from the
|
||
<collectingCountry id="7FB687A17C10FFD3FE1657C9FE30FEE0" box="[377,420,232,257]" name="United Kingdom" pageId="4" pageNumber="277">UK</collectingCountry>
|
||
,
|
||
<collectingCountry id="7FB687A17C10FFD3FEDF57C9FE67FEE0" box="[432,499,232,257]" name="Spain" pageId="4" pageNumber="277">Spain</collectingCountry>
|
||
, W. coast of the
|
||
<collectingCountry id="7FB687A17C10FFD3FDC457C9FD75FEE0" box="[683,737,232,257]" name="United States of America" pageId="4" pageNumber="277">USA</collectingCountry>
|
||
and
|
||
<collectingCountry id="7FB687A17C10FFD3FC7757C9FCF4FEE0" box="[792,864,232,257]" name="Brazil" pageId="4" pageNumber="277">Brazil</collectingCountry>
|
||
.
|
||
</paragraph>
|
||
<paragraph id="071EC7317C10FFD3FFD2562DFEB1FE8C" blockId="4.[136,1452,160,365]" pageId="4" pageNumber="277">
|
||
<emphasis id="35D51B237C10FFD3FFD2562DFE15FEC4" bold="true" box="[189,385,268,293]" pageId="4" pageNumber="277">Observations:—</emphasis>
|
||
The species is fairly common in the
|
||
<typeStatus id="D81A79937C10FFD3FC78562DFCD3FEC4" box="[791,839,268,293]" pageId="4" pageNumber="277">type</typeStatus>
|
||
material, 20 intact specimens were seen in the 4 slides examined. The hollow columns joining the basal and tegumental layers are a particularly noteworthy finding—see under
|
||
<taxonomicName id="C0A1BCB27C10FFD3FFA05675FE89FE8C" box="[207,285,340,365]" class="Bacillariophyceae" family="Pleurosigmataceae" genus="Pleurosigma" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="4" pageNumber="277" phylum="Bacillariophyta" rank="species" species="acus">
|
||
<emphasis id="35D51B237C10FFD3FFA05675FE89FE8C" box="[207,285,340,365]" italics="true" pageId="4" pageNumber="277">P. acus</emphasis>
|
||
</taxonomicName>
|
||
.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |