296 lines
41 KiB
XML
296 lines
41 KiB
XML
<document id="FD4538E06F0C1D8E0F60455E57CD6D7E" ID-CLB-Dataset="5577" ID-DOI="10.11646/phytotaxa.127.1.8" ID-GBIF-Dataset="84eadb24-4c2c-4317-b068-c12776220192" ID-ISSN="1179-3163" ID-Zenodo-Dep="5085461" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1625839043136" checkinUser="felipe" docAuthor="Enache, Mihaela D., Potapova, Marina, Sheibley, Rich & Moran, Patrick" docDate="2013" docId="8A231246FFEFFFA9B6932AD8FBFAF9D8" docLanguage="en" docName="Phytotaxa.127.1.49-57.pdf" docOrigin="Phytotaxa 127 (1)" docSource="http://dx.doi.org/10.11646/phytotaxa.127.1.8" docStyle="DocumentStyle:13F189B31CB4CCCE9197361A4E100104.3:Phytotaxa.2011-2013.journal_article" docStyleId="13F189B31CB4CCCE9197361A4E100104" docStyleName="Phytotaxa.2011-2013.journal_article" docStyleVersion="3" docTitle="Psammothidium lacustre Enache & Potapova & Sheibley & Moran 2013, sp. nov." docType="treatment" docVersion="6" lastPageNumber="53" masterDocId="761A6A3EFFEDFFADB6042C39FFF0FB70" masterDocTitle="Three new Psammothidium species from lakes of Olympic and Cascade Mountains in Washington State, USA" masterLastPageNumber="57" masterPageNumber="49" pageNumber="51" updateTime="1699026925715" updateUser="ExternalLinkService" zenodo-license-document="CLOSED">
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<mods:title id="7B923F90BF6EBD9A00C0CB00232C6617">Three new Psammothidium species from lakes of Olympic and Cascade Mountains in Washington State, USA</mods:title>
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</mods:titleInfo>
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<mods:name id="114BF8655713209315418CE8835D4EED" type="personal">
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<mods:roleTerm id="7C94C93B43CEFFAD7321D5C156D8AD2E">Author</mods:roleTerm>
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<mods:namePart id="6F401CF7E57EDF73978100A163935B0A">Enache, Mihaela D.</mods:namePart>
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<mods:affiliation id="5F2B943D0D2C47A98E002A771CC4456B">Academy of Natural Sciences, 1900 Benjamin Franklin Parkway, Philadelphia, PA, 19103</mods:affiliation>
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<mods:roleTerm id="6A83B60D619A9260DA7A0E5BF52EA515">Author</mods:roleTerm>
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<mods:namePart id="0CD0445DF5C2B60F0BAF69AB6254763B">Potapova, Marina</mods:namePart>
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<mods:affiliation id="8FD614579474E6244F1A836719EBB5AC">Academy of Natural Sciences, 1900 Benjamin Franklin Parkway, Philadelphia, PA, 19103</mods:affiliation>
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<mods:namePart id="067AF5FE909CCCFED7083BED91D7E541">Sheibley, Rich</mods:namePart>
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<mods:affiliation id="B3A73A6E937AD34A1DE7715D0473A380">U. S. Geological Survey, Washington Water Science Center, 934 Broadway, Suite 300, Tacoma, WA 98402</mods:affiliation>
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<mods:namePart id="1A26B9B7B3FF983F7F1460D7F1B5219D">Moran, Patrick</mods:namePart>
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<mods:affiliation id="894B545DE8FDF9227EB414DD58CDA394">U. S. Geological Survey, Washington Water Science Center, 934 Broadway, Suite 300, Tacoma, WA 98402</mods:affiliation>
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<mods:title id="B03584B013F055D6F918113BD2C15307">Phytotaxa</mods:title>
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<mods:date id="3D6FBC10AFAAA9AC40EF24DBC29C82B2">2013</mods:date>
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<mods:number id="B9514F69AA7DD70CBCD664AD58AB3EFF">2013-08-29</mods:number>
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<mods:number id="2E8F3FA035FF00802DB32209B9584195">127</mods:number>
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<mods:url id="46B577F356466FD1BFCE0C8EC03C6A0F">http://dx.doi.org/10.11646/phytotaxa.127.1.8</mods:url>
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<mods:classification id="A5BF05ED193B21AD9D76310C6D87F1EF">journal article</mods:classification>
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<treatment id="8A231246FFEFFFA9B6932AD8FBFAF9D8" ID-DOI="http://doi.org/10.5281/zenodo.5085544" ID-GBIF-Taxon="183410320" ID-Zenodo-Dep="5085544" LSID="urn:lsid:plazi:treatment:8A231246FFEFFFA9B6932AD8FBFAF9D8" httpUri="http://treatment.plazi.org/id/8A231246FFEFFFA9B6932AD8FBFAF9D8" lastPageId="4" lastPageNumber="53" pageId="2" pageNumber="51">
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<subSubSection id="4A90F0DBFFEFFFAFB6932AD8FB65FCB5" pageId="2" pageNumber="51" type="nomenclature">
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<paragraph id="0235A350FFEFFFAFB6932AD8FC2FFD8B" blockId="2.[151,991,1761,1787]" box="[151,991,1761,1787]" pageId="2" pageNumber="51">
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<heading id="597D143CFFEFFFAFB6932AD8FC2FFD8B" box="[151,991,1761,1787]" fontSize="11" level="2" pageId="2" pageNumber="51" reason="3">
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<taxonomicName id="C58AD8D3FFEFFFAFB6932AD8FD5BFD8B" authority="Enache & Potapova" authorityName="Enache & Potapova & Sheibley & Moran" authorityYear="2013" box="[151,683,1761,1787]" class="Bacillariophyceae" family="Achnanthidiaceae" genus="Psammothidium" higherTaxonomySource="GBIF" kingdom="Chromista" order="Achnanthales" pageId="2" pageNumber="51" phylum="Bacillariophyta" rank="species" species="lacustre" status="sp. nov.">
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<emphasis id="30FE7F42FFEFFFAFB6932AD8FE4FFD8B" bold="true" box="[151,447,1761,1787]" italics="true" pageId="2" pageNumber="51">Psammothidium lacustre</emphasis>
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Enache & Potapova
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</taxonomicName>
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<taxonomicNameLabel id="2BCDC239FFEFFFAFB4B62AD8FCFBFD8B" box="[690,779,1761,1787]" pageId="2" pageNumber="51" rank="species">
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<emphasis id="30FE7F42FFEFFFAFB4B62AD8FCF4FD8A" box="[690,772,1761,1786]" italics="true" pageId="2" pageNumber="51">sp. nov</emphasis>
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.
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</taxonomicNameLabel>
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(
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<figureCitation id="9AB1BFD5FFEFFFAFB51E2AD8FC71FD8B" box="[794,897,1761,1787]" captionStart="FIGURES 1–21" captionStartId="3.[151,259,1929,1951]" captionTargetBox="[187,1403,537,1903]" captionTargetId="figure-233@3.[187,1404,537,1903]" captionTargetPageId="3" captionText="FIGURES 1–21: LM micrographs of Psammothidium species from Snow Lake, Washington Cascades. Figs 1–8. Psammothidium lacustre sp. nov. Figs 1–2. Holotype specimen, slide ANSP GC64860. Figs 9–21. Psammothidium alpinum sp. nov. Figs 9–10. Holotype specimen, slide ANSP GC64862. Scale bar = 10 µm." figureDoi="http://doi.org/10.5281/zenodo.5085463" httpUri="https://zenodo.org/record/5085463/files/figure.png" pageId="2" pageNumber="51">Figs 1–8</figureCitation>
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,
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<figureCitation id="9AB1BFD5FFEFFFAFB5892AD8FC26FD8B" box="[909,982,1761,1787]" captionStart="FIGURES 35–39" captionStartId="6.[151,258,852,874]" captionTargetBox="[380,1211,181,834]" captionTargetId="figure-179@6.[380,1211,181,834]" captionTargetPageId="6" captionText="FIGURES 35–39: Psammothidium lacustre sp. nov., SEM. Fig. 35. External view of raphe valve, Hidden Lake NOCA, sample ANSP WACA017. Fig. 36. Internal view of raphe valve, type material, sample ANSP WACA019. Fig. 37. Areolae on internal surface of raphe valve, type material, sample ANSP WACA019. Fig. 38. Internal view of rapheless valve, Hidden Lake NOCA, sample ANSP WACA017. Fig. 39. External view of rapheless valve, type material, sample ANSP WACA019. Scale bars = 1 µm" figureDoi="http://doi.org/10.5281/zenodo.5085469" httpUri="https://zenodo.org/record/5085469/files/figure.png" pageId="2" pageNumber="51">35–39</figureCitation>
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)
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</heading>
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</paragraph>
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<paragraph id="0235A350FFEFFFAFB6932B17FB65FCB5" blockId="2.[151,1436,1838,1989]" pageId="2" pageNumber="51">
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<emphasis id="30FE7F42FFEFFFAFB6932B17FB65FCB5" italics="true" pageId="2" pageNumber="51">
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Valvae lanceolate,
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<quantity id="C5720EB5FFEFFFAFB7662B17FE15FC35" box="[354,485,1838,1861]" metricMagnitude="-3" metricUnit="m" metricValue="9.8" metricValueMax="11.2" metricValueMin="8.4" pageId="2" pageNumber="51" unit="mm" value="9.8" valueMax="11.2" valueMin="8.4">8.4–11.2 µm</quantity>
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latae,
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<quantity id="C5720EB5FFEFFFAFB42B2B17FD5DFC35" box="[559,685,1838,1861]" metricMagnitude="-2" metricUnit="m" metricValue="2.235" metricValueMax="2.8" metricValueMin="1.67" pageId="2" pageNumber="51" unit="mm" value="22.35" valueMax="28.0" valueMin="16.7">16.7–28 µm</quantity>
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longae. Raphovalva cum area axialis linearis versus centro expanso, area centralis rectangularis, ½ vel 2/3 valvae lata. Raphe recta poris centralibus simples cum cristae et sulci, interne paulo curvatae. Fissuris terminalibus simplex, longae, ad versum curvatae. Araphovalva cum area axialis angusta, area centralis circulare, 2/3 valvae lata. Striae transapicales radiatae
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<quantity id="C5720EB5FFEFFFAFB24E2BB7FB5CFCD5" box="[1098,1196,1934,1957]" metricMagnitude="-1" metricUnit="m" metricValue="6.096" metricValueMax="6.604" metricValueMin="5.588" pageId="2" pageNumber="51" unit="in" value="24.0" valueMax="26.0" valueMin="22.0">22–26 in</quantity>
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||
<quantity id="C5720EB5FFEFFFAFB2BC2BB7FAF2FCD5" box="[1208,1282,1934,1957]" metricMagnitude="-2" metricUnit="m" metricValue="1.0" pageId="2" pageNumber="51" unit="mm" value="10.0">10 µm</quantity>
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||
; areolae cum foramina externae circulares, foramina internae transapicalem elongatae,
|
||
<quantity id="C5720EB5FFEFFFAFB5E32B97FBB4FCB5" box="[999,1092,1966,1989]" metricMagnitude="0" metricUnit="m" metricValue="1.27" metricValueMax="1.524" metricValueMin="1.016" pageId="2" pageNumber="51" unit="in" value="50.0" valueMax="60.0" valueMin="40.0">40–60 in</quantity>
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||
<quantity id="C5720EB5FFEFFFAFB24F2B97FB61FCB5" box="[1099,1169,1966,1989]" metricMagnitude="-2" metricUnit="m" metricValue="1.0" pageId="2" pageNumber="51" unit="mm" value="10.0">10 µm</quantity>
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.
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</emphasis>
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||
</paragraph>
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||
</subSubSection>
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||
<subSubSection id="4A90F0DBFFEEFFAEB6932CA1FEA7FA3F" pageId="3" pageNumber="52" type="description">
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<paragraph id="0235A350FFEEFFAEB6932CA1FEA7FA3F" blockId="3.[151,1436,152,335]" pageId="3" pageNumber="52">
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Valves lanceolate,
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||
<quantity id="C5720EB5FFEEFFAEB7602CA1FE1EFBDF" box="[356,494,152,175]" metricMagnitude="-3" metricUnit="m" metricValue="9.8" metricValueMax="11.2" metricValueMin="8.4" pageId="3" pageNumber="52" unit="mm" value="9.8" valueMax="11.2" valueMin="8.4">8.4–11.2 µm</quantity>
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wide,
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<quantity id="C5720EB5FFEEFFAEB4382CA1FD4FFBDF" box="[572,703,152,175]" metricMagnitude="-2" metricUnit="m" metricValue="2.235" metricValueMax="2.8" metricValueMin="1.67" pageId="3" pageNumber="52" unit="mm" value="22.35" valueMax="28.0" valueMin="16.7">16.7–28 µm</quantity>
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long. Raphe valve with linear axial area, rectangular central area, occupying ½ to 2/3 of valve breadth (
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<figureCitation id="9AB1BFD5FFEEFFAEB45E2C81FD00FBBF" box="[602,752,184,207]" captionStart="FIGURES 1–21" captionStartId="3.[151,259,1929,1951]" captionTargetBox="[187,1403,537,1903]" captionTargetId="figure-233@3.[187,1404,537,1903]" captionTargetPageId="3" captionText="FIGURES 1–21: LM micrographs of Psammothidium species from Snow Lake, Washington Cascades. Figs 1–8. Psammothidium lacustre sp. nov. Figs 1–2. Holotype specimen, slide ANSP GC64860. Figs 9–21. Psammothidium alpinum sp. nov. Figs 9–10. Holotype specimen, slide ANSP GC64862. Scale bar = 10 µm." figureDoi="http://doi.org/10.5281/zenodo.5085463" httpUri="https://zenodo.org/record/5085463/files/figure.png" pageId="3" pageNumber="52">Figs 2, 3, 6, 7</figureCitation>
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). Proximal raphe endings slightly deflected internally (
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<figureCitation id="9AB1BFD5FFEEFFAEB33B2C81FA60FBBF" box="[1343,1424,184,207]" captionStart="FIGURES 35–39" captionStartId="6.[151,258,852,874]" captionTargetBox="[380,1211,181,834]" captionTargetId="figure-179@6.[380,1211,181,834]" captionTargetPageId="6" captionText="FIGURES 35–39: Psammothidium lacustre sp. nov., SEM. Fig. 35. External view of raphe valve, Hidden Lake NOCA, sample ANSP WACA017. Fig. 36. Internal view of raphe valve, type material, sample ANSP WACA019. Fig. 37. Areolae on internal surface of raphe valve, type material, sample ANSP WACA019. Fig. 38. Internal view of rapheless valve, Hidden Lake NOCA, sample ANSP WACA017. Fig. 39. External view of rapheless valve, type material, sample ANSP WACA019. Scale bars = 1 µm" figureDoi="http://doi.org/10.5281/zenodo.5085469" httpUri="https://zenodo.org/record/5085469/files/figure.png" pageId="3" pageNumber="52">Fig. 36</figureCitation>
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). Terminal raphe fissures simple, long, deflected in opposite directions (
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<figureCitation id="9AB1BFD5FFEEFFAEB5CD2CE1FBBBFB9F" box="[969,1099,216,239]" captionStart="FIGURES 1–21" captionStartId="3.[151,259,1929,1951]" captionTargetBox="[187,1403,537,1903]" captionTargetId="figure-233@3.[187,1404,537,1903]" captionTargetPageId="3" captionText="FIGURES 1–21: LM micrographs of Psammothidium species from Snow Lake, Washington Cascades. Figs 1–8. Psammothidium lacustre sp. nov. Figs 1–2. Holotype specimen, slide ANSP GC64860. Figs 9–21. Psammothidium alpinum sp. nov. Figs 9–10. Holotype specimen, slide ANSP GC64862. Scale bar = 10 µm." figureDoi="http://doi.org/10.5281/zenodo.5085463" httpUri="https://zenodo.org/record/5085463/files/figure.png" pageId="3" pageNumber="52">Figs 2, 3, 6</figureCitation>
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). Rapheless valve with narrow axial area, round central area occupying 2/3 of the valve breadth (
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||
<figureCitation id="9AB1BFD5FFEEFFAEB5922CC1FBC2FA7F" box="[918,1074,248,271]" captionStart="FIGURES 1–21" captionStartId="3.[151,259,1929,1951]" captionTargetBox="[187,1403,537,1903]" captionTargetId="figure-233@3.[187,1404,537,1903]" captionTargetPageId="3" captionText="FIGURES 1–21: LM micrographs of Psammothidium species from Snow Lake, Washington Cascades. Figs 1–8. Psammothidium lacustre sp. nov. Figs 1–2. Holotype specimen, slide ANSP GC64860. Figs 9–21. Psammothidium alpinum sp. nov. Figs 9–10. Holotype specimen, slide ANSP GC64862. Scale bar = 10 µm." figureDoi="http://doi.org/10.5281/zenodo.5085463" httpUri="https://zenodo.org/record/5085463/files/figure.png" pageId="3" pageNumber="52">Figs 1, 4, 5, 8</figureCitation>
|
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). Striae radiate,
|
||
<quantity id="C5720EB5FFEEFFAEB2E22CC1FAB6FA7F" box="[1254,1350,248,271]" metricMagnitude="-1" metricUnit="m" metricValue="6.096" metricValueMax="6.604" metricValueMin="5.588" pageId="3" pageNumber="52" unit="in" value="24.0" valueMax="26.0" valueMin="22.0">22–26 in</quantity>
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||
<quantity id="C5720EB5FFEEFFAEB34A2CC1FA68FA7F" box="[1358,1432,248,271]" metricMagnitude="-2" metricUnit="m" metricValue="1.0" pageId="3" pageNumber="52" unit="mm" value="10.0">10 µm</quantity>
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||
; areolae
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||
<quantity id="C5720EB5FFEEFFAEB71F2D21FE89FA5F" box="[283,377,280,303]" metricMagnitude="0" metricUnit="m" metricValue="1.27" metricValueMax="1.524" metricValueMin="1.016" pageId="3" pageNumber="52" unit="in" value="50.0" valueMax="60.0" valueMin="40.0">40–60 in</quantity>
|
||
<quantity id="C5720EB5FFEEFFAEB77B2D21FE37FA5F" box="[383,455,280,303]" metricMagnitude="-2" metricUnit="m" metricValue="1.0" pageId="3" pageNumber="52" unit="mm" value="10.0">10 µm</quantity>
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||
, with round external foramina, and internal openings elongated transapically on both valves (
|
||
<figureCitation id="9AB1BFD5FFEEFFAEB6CA2D01FEBBFA3F" box="[206,331,312,335]" captionStart="FIGURES 35–39" captionStartId="6.[151,258,852,874]" captionTargetBox="[380,1211,181,834]" captionTargetId="figure-179@6.[380,1211,181,834]" captionTargetPageId="6" captionText="FIGURES 35–39: Psammothidium lacustre sp. nov., SEM. Fig. 35. External view of raphe valve, Hidden Lake NOCA, sample ANSP WACA017. Fig. 36. Internal view of raphe valve, type material, sample ANSP WACA019. Fig. 37. Areolae on internal surface of raphe valve, type material, sample ANSP WACA019. Fig. 38. Internal view of rapheless valve, Hidden Lake NOCA, sample ANSP WACA017. Fig. 39. External view of rapheless valve, type material, sample ANSP WACA019. Scale bars = 1 µm" figureDoi="http://doi.org/10.5281/zenodo.5085469" httpUri="https://zenodo.org/record/5085469/files/figure.png" pageId="3" pageNumber="52">Figs 35–39</figureCitation>
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).
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||
</paragraph>
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||
</subSubSection>
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||
<subSubSection id="4A90F0DBFFEEFFAEB6932D41FB47FA9F" pageId="3" pageNumber="52" type="materials_examined">
|
||
<paragraph id="0235A350FFEEFFAEB6932D41FB47FA9F" blockId="3.[151,1436,376,495]" pageId="3" pageNumber="52">
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||
<emphasis id="30FE7F42FFEEFFAEB6932D41FF02FAFF" bold="true" box="[151,242,376,399]" pageId="3" pageNumber="52">Type:—</emphasis>
|
||
<materialsCitation id="B2E2A90DFFEEFFAEB6F62D41FB42FA9F" ID-GBIF-Occurrence="3320045303" collectingDate="2009-10-07" collectionCode="ANSP, CANA" country="United States of America" elevation="10" latitude="46.7576" location="Snow Lake" longLatPrecision="5" longitude="-121.69825" municipality="Cascade Mountains" pageId="3" pageNumber="52" specimenCode="WACA019, GC64860, GC64861" specimenCount="1" stateProvince="Washington" typeStatus="holotype">
|
||
<collectingCountry id="7A9DE3C0FFEEFFAEB6F62D41FEDBFAFF" box="[242,299,376,399]" name="United States of America" pageId="3" pageNumber="52">USA</collectingCountry>
|
||
.
|
||
<collectingRegion id="C04E6DB2FFEEFFAEB7332D41FE4AFAFF" box="[311,442,376,399]" country="United States of America" name="Washington" pageId="3" pageNumber="52">Washington</collectingRegion>
|
||
:
|
||
<collectingMunicipality id="E251392AFFEEFFAEB7C32D41FD6FFAFF" box="[455,671,376,399]" pageId="3" pageNumber="52">Cascade Mountains</collectingMunicipality>
|
||
,
|
||
<location id="0755F58BFFEEFFAEB4A82D41FCDAFAFF" LSID="urn:lsid:plazi:treatment:8A231246FFEFFFA9B6932AD8FBFAF9D8:0755F58BFFEEFFAEB4A82D41FCDAFAFF" box="[684,810,376,399]" country="United States of America" latitude="46.7576" longLatPrecision="5" longitude="-121.69825" municipality="Cascade Mountains" name="Snow Lake" pageId="3" pageNumber="52" stateProvince="Washington">Snow Lake</location>
|
||
,
|
||
<geoCoordinate id="67BEC597FFEEFFAEB53C2D41FC49FAFF" box="[824,953,376,399]" degrees="46.7576" direction="north" orientation="latitude" pageId="3" pageNumber="52" precision="5" value="46.7576">46.7576° N</geoCoordinate>
|
||
,
|
||
<geoCoordinate id="67BEC597FFEEFFAEB5C22D41FB70FAFF" box="[966,1152,376,399]" degrees="121.6982468" direction="west" orientation="longitude" pageId="3" pageNumber="52" precision="1" value="-121.69825">121.6982468° W</geoCoordinate>
|
||
, lake sediment (2–2.5-cm depth core interval; lake maximum depth
|
||
<quantity id="C5720EB5FFEEFFAEB4A12DA1FD08FADF" box="[677,760,408,431]" metricMagnitude="0" metricUnit="m" metricValue="9.75" pageId="3" pageNumber="52" unit="m" value="9.75">
|
||
<elevation id="89A74463FFEEFFAEB4A12DA1FD08FADF" box="[677,760,408,431]" metricMagnitude="0" metricUnit="m" metricValue="9.75" pageId="3" pageNumber="52" unit="m" value="9.75">9.75 m</elevation>
|
||
</quantity>
|
||
), collected
|
||
<date id="76348590FFEEFFAEB5792DA1FBCEFADF" box="[893,1086,408,431]" pageId="3" pageNumber="52" value="2009-10-07">
|
||
<collectingDate id="66707C78FFEEFFAEB5792DA1FBCEFADF" box="[893,1086,408,431]" pageId="3" pageNumber="52" value="2009-10-07">07 October 2009</collectingDate>
|
||
</date>
|
||
, collection
|
||
<emphasis id="30FE7F42FFEEFFAEB2C72DA1FAC1FADF" box="[1219,1329,408,431]" italics="true" pageId="3" pageNumber="52">
|
||
<specimenCode id="522C0B2BFFEEFFAEB2C72DA1FAC1FADF" box="[1219,1329,408,431]" collectionCode="WACA" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34575" name="Walnut Canyon National Monument" pageId="3" pageNumber="52">WACA019</specimenCode>
|
||
</emphasis>
|
||
, (Circled specimen (
|
||
<figureCitation id="9AB1BFD5FFEEFFAEB7442D81FE5CFABF" box="[320,428,440,463]" captionStart="FIGURES 1–21" captionStartId="3.[151,259,1929,1951]" captionTargetBox="[187,1403,537,1903]" captionTargetId="figure-233@3.[187,1404,537,1903]" captionTargetPageId="3" captionText="FIGURES 1–21: LM micrographs of Psammothidium species from Snow Lake, Washington Cascades. Figs 1–8. Psammothidium lacustre sp. nov. Figs 1–2. Holotype specimen, slide ANSP GC64860. Figs 9–21. Psammothidium alpinum sp. nov. Figs 9–10. Holotype specimen, slide ANSP GC64862. Scale bar = 10 µm." figureDoi="http://doi.org/10.5281/zenodo.5085463" httpUri="https://zenodo.org/record/5085463/files/figure.png" pageId="3" pageNumber="52">Figs 1, 2</figureCitation>
|
||
) on slide
|
||
<emphasis id="30FE7F42FFEEFFAEB42E2D81FD62FABF" box="[554,658,440,463]" italics="true" pageId="3" pageNumber="52">
|
||
<specimenCode id="522C0B2BFFEEFFAEB42E2D81FD62FABF" box="[554,658,440,463]" collectionCode="GC" country="0" name="Goucher College" pageId="3" pageNumber="52">GC64860</specimenCode>
|
||
</emphasis>
|
||
,
|
||
<emphasis id="30FE7F42FFEEFFAEB4A22D81FC60FABF" box="[678,912,440,463]" italics="true" pageId="3" pageNumber="52">
|
||
accession #
|
||
<specimenCode id="522C0B2BFFEEFFAEB52E2D81FC60FABF" box="[810,912,440,463]" collectionCode="GC" country="0" name="Goucher College" pageId="3" pageNumber="52">GC64860</specimenCode>
|
||
</emphasis>
|
||
(
|
||
<collectionCode id="649B3B95FFEEFFAEB5A12D81FC01FABF" box="[933,1009,440,463]" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34784" lsid="urn:lsid:biocol.org:col:34784" name="Academy of Natural Sciences of Philadelphia" pageId="3" pageNumber="52">ANSP</collectionCode>
|
||
!),
|
||
<emphasis id="30FE7F42FFEEFFAEB2142D81FACFFABF" bold="true" box="[1040,1343,440,463]" pageId="3" pageNumber="52">
|
||
<typeStatus id="DD311DF2FFEEFFAEB2142D81FB83FABF" box="[1040,1139,440,463]" pageId="3" pageNumber="52" type="holotype">holotype</typeStatus>
|
||
, designated here
|
||
</emphasis>
|
||
; circled specimens on slide
|
||
<emphasis id="30FE7F42FFEEFFAEB7932DE1FE0FFA9F" box="[407,511,472,495]" italics="true" pageId="3" pageNumber="52">
|
||
<specimenCode id="522C0B2BFFEEFFAEB7932DE1FE0FFA9F" box="[407,511,472,495]" collectionCode="GC" country="0" name="Goucher College" pageId="3" pageNumber="52">GC64861</specimenCode>
|
||
</emphasis>
|
||
(
|
||
<collectionCode id="649B3B95FFEEFFAEB4092DE1FDA9FA9F" box="[525,601,472,495]" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34784" lsid="urn:lsid:biocol.org:col:34784" name="Academy of Natural Sciences of Philadelphia" pageId="3" pageNumber="52">ANSP</collectionCode>
|
||
!) and slide
|
||
<emphasis id="30FE7F42FFEEFFAEB4D52DE1FCE4FA9F" box="[721,788,472,495]" italics="true" pageId="3" pageNumber="52">84222</emphasis>
|
||
(
|
||
<collectionCode id="649B3B95FFEEFFAEB5262DE1FC87FA9F" box="[802,887,472,495]" pageId="3" pageNumber="52">CANA</collectionCode>
|
||
!),
|
||
<emphasis id="30FE7F42FFEEFFAEB5892DE1FB57FA9F" bold="true" box="[909,1191,472,495]" pageId="3" pageNumber="52">isotypes, designated here</emphasis>
|
||
)
|
||
</materialsCitation>
|
||
.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<caption id="56F5F3D8FFEEFFAEB6932BB0FD02FC94" ID-DOI="http://doi.org/10.5281/zenodo.5085463" ID-Zenodo-Dep="5085463" httpUri="https://zenodo.org/record/5085463/files/figure.png" pageId="3" pageNumber="52" startId="3.[151,259,1929,1951]" targetBox="[187,1403,537,1903]" targetPageId="3">
|
||
<paragraph id="0235A350FFEEFFAEB6932BB0FD02FC94" blockId="3.[151,1436,1927,2020]" pageId="3" pageNumber="52">
|
||
<emphasis id="30FE7F42FFEEFFAEB6932BB0FECCFCEF" bold="true" box="[151,316,1927,1951]" pageId="3" pageNumber="52">FIGURES 1–21</emphasis>
|
||
: LM micrographs of
|
||
<taxonomicName id="C58AD8D3FFEEFFAEB4152BB0FD0DFCEE" box="[529,765,1929,1950]" class="Bacillariophyceae" family="Achnanthidiaceae" genus="Psammothidium" kingdom="Chromista" order="Achnanthales" pageId="3" pageNumber="52" phylum="Bacillariophyta" rank="species" species="undetermined">
|
||
<emphasis id="30FE7F42FFEEFFAEB4152BB0FD5FFCEE" box="[529,687,1929,1950]" italics="true" pageId="3" pageNumber="52">Psammothidium</emphasis>
|
||
species
|
||
</taxonomicName>
|
||
from Snow Lake, Washington Cascades. Figs 1–8.
|
||
<taxonomicName id="C58AD8D3FFEEFFAEB2F92BB0FF17FCB2" authority="Enache & Potapova & Sheibley & Moran, 2013" authorityName="Enache & Potapova & Sheibley & Moran" authorityYear="2013" class="Bacillariophyceae" family="Achnanthidiaceae" genus="Psammothidium" higherTaxonomySource="GBIF" kingdom="Chromista" order="Achnanthales" pageId="3" pageNumber="52" phylum="Bacillariophyta" rank="species" species="lacustre" status="sp. nov.">
|
||
<emphasis id="30FE7F42FFEEFFAEB2F92BB0FF17FCB2" italics="true" pageId="3" pageNumber="52">Psammothidium lacustre</emphasis>
|
||
</taxonomicName>
|
||
<taxonomicNameLabel id="2BCDC239FFEEFFAEB6EA2B94FECDFCB2" box="[238,317,1965,1986]" pageId="3" pageNumber="52" rank="species">sp. nov.</taxonomicNameLabel>
|
||
Figs 1–2. Holotype specimen, slide ANSP GC64860. Figs 9–21.
|
||
<taxonomicName id="C58AD8D3FFEEFFAEB5DD2B94FB24FCB2" authority="Enache & Potapova & Sheibley & Moran, 2013" authorityName="Enache & Potapova & Sheibley & Moran" authorityYear="2013" box="[985,1236,1965,1986]" class="Bacillariophyceae" family="Achnanthidiaceae" genus="Psammothidium" higherTaxonomySource="GBIF" kingdom="Chromista" order="Achnanthales" pageId="3" pageNumber="52" phylum="Bacillariophyta" rank="species" species="alpinum" status="sp. nov.">
|
||
<emphasis id="30FE7F42FFEEFFAEB5DD2B94FB24FCB2" box="[985,1236,1965,1986]" italics="true" pageId="3" pageNumber="52">Psammothidium alpinum</emphasis>
|
||
</taxonomicName>
|
||
<taxonomicNameLabel id="2BCDC239FFEEFFAEB2DF2B94FADAFCB2" box="[1243,1322,1965,1986]" pageId="3" pageNumber="52" rank="species">sp. nov.</taxonomicNameLabel>
|
||
Figs 9–10. Holotype specimen, slide ANSP GC64862. Scale bar = 10 µm.
|
||
</paragraph>
|
||
</caption>
|
||
<subSubSection id="4A90F0DBFFE9FFA9B6932CAEFBFAF9D8" pageId="4" pageNumber="53" type="etymology">
|
||
<paragraph id="0235A350FFE9FFA9B6932CAEFACEFBC2" blockId="4.[151,1440,151,680]" box="[151,1342,151,178]" pageId="4" pageNumber="53">
|
||
<emphasis id="30FE7F42FFE9FFA9B6932CAEFEEEFBC1" bold="true" box="[151,286,151,177]" pageId="4" pageNumber="53">Etymology</emphasis>
|
||
:—specific epithet refers to the occurrence of the new species in a lacustrine environment.
|
||
</paragraph>
|
||
<paragraph id="0235A350FFE9FFA9B6C22C87FC30FAB0" blockId="4.[151,1440,151,680]" pageId="4" pageNumber="53">
|
||
The species with the closest morphological features to
|
||
<taxonomicName id="C58AD8D3FFE9FFA9B5432C84FB99FBA7" authorityName="Enache & Potapova & Sheibley & Moran" authorityYear="2013" box="[839,1129,189,215]" class="Bacillariophyceae" family="Achnanthidiaceae" genus="Psammothidium" higherTaxonomySource="GBIF" kingdom="Chromista" order="Achnanthales" pageId="4" pageNumber="53" phylum="Bacillariophyta" rank="species" species="lacustre">
|
||
<emphasis id="30FE7F42FFE9FFA9B5432C84FB99FBA7" box="[839,1129,189,215]" italics="true" pageId="4" pageNumber="53">Psammothidium lacustre</emphasis>
|
||
</taxonomicName>
|
||
is
|
||
<taxonomicName id="C58AD8D3FFE9FFA9B2882C87FAD7FBA7" authorityName="Bukhtiyarova et Round" authorityYear="1996" baseAuthorityName="Hustedt" box="[1164,1319,189,215]" class="Bacillariophyceae" family="Achnanthidiaceae" genus="Psammothidium" higherTaxonomySource="GBIF" kingdom="Chromista" order="Achnanthales" pageId="4" pageNumber="53" phylum="Bacillariophyta" rank="species" species="helveticum">
|
||
<emphasis id="30FE7F42FFE9FFA9B2882C87FAD7FBA7" box="[1164,1319,189,215]" italics="true" pageId="4" pageNumber="53">P. helveticum</emphasis>
|
||
</taxonomicName>
|
||
(
|
||
<figureCitation id="9AB1BFD5FFE9FFA9B3322C87FF48FB8F" captionStart="FIGURES 22–34" captionStartId="5.[151,258,1965,1987]" captionTargetBox="[162,1424,1366,1938]" captionTargetId="figure-494@5.[162,1424,1366,1943]" captionTargetPageId="5" captionText="FIGURES 22–34: LM micrographs of Psammothidium species from Snow Lake, Washington Cascades. Figs 22–31. Psammothidium nivale sp. nov. Figs 22–23. Holotype specimen, slide ANSP GC64684. Figs 32–34. Psammothidium helveticum. Scale bar = 10 µm." figureDoi="http://doi.org/10.5281/zenodo.5085467" httpUri="https://zenodo.org/record/5085467/files/figure.png" pageId="4" pageNumber="53">Figs 32– 34</figureCitation>
|
||
).
|
||
<taxonomicName id="C58AD8D3FFE9FFA9B6C82CDDFE1EFB8E" authorityName="Enache & Potapova & Sheibley & Moran" authorityYear="2013" box="[204,494,228,254]" class="Bacillariophyceae" family="Achnanthidiaceae" genus="Psammothidium" higherTaxonomySource="GBIF" kingdom="Chromista" order="Achnanthales" pageId="4" pageNumber="53" phylum="Bacillariophyta" rank="species" species="lacustre">
|
||
<emphasis id="30FE7F42FFE9FFA9B6C82CDDFE1EFB8E" box="[204,494,228,254]" italics="true" pageId="4" pageNumber="53">Psammothidium lacustre</emphasis>
|
||
</taxonomicName>
|
||
has much larger size, with valve width greather than
|
||
<quantity id="C5720EB5FFE9FFA9B25E2CDCFB69FB8F" box="[1114,1177,229,255]" metricMagnitude="-3" metricUnit="m" metricValue="8.0" pageId="4" pageNumber="53" unit="mm" value="8.0">8 µm</quantity>
|
||
, and more acute valve ends compared to
|
||
<taxonomicName id="C58AD8D3FFE9FFA9B7762D35FDE1FA55" authorityName="Bukhtiyarova et Round" authorityYear="1996" baseAuthorityName="Hustedt" box="[370,529,267,293]" class="Bacillariophyceae" family="Achnanthidiaceae" genus="Psammothidium" higherTaxonomySource="GBIF" kingdom="Chromista" order="Achnanthales" pageId="4" pageNumber="53" phylum="Bacillariophyta" rank="species" species="helveticum">
|
||
<emphasis id="30FE7F42FFE9FFA9B7762D35FDE1FA55" box="[370,529,267,293]" italics="true" pageId="4" pageNumber="53">P. helveticum</emphasis>
|
||
</taxonomicName>
|
||
. SEM investigations (
|
||
<figureCitation id="9AB1BFD5FFE9FFA9B51F2D35FC53FA56" box="[795,931,268,294]" captionStart="FIGURES 35–39" captionStartId="6.[151,258,852,874]" captionTargetBox="[380,1211,181,834]" captionTargetId="figure-179@6.[380,1211,181,834]" captionTargetPageId="6" captionText="FIGURES 35–39: Psammothidium lacustre sp. nov., SEM. Fig. 35. External view of raphe valve, Hidden Lake NOCA, sample ANSP WACA017. Fig. 36. Internal view of raphe valve, type material, sample ANSP WACA019. Fig. 37. Areolae on internal surface of raphe valve, type material, sample ANSP WACA019. Fig. 38. Internal view of rapheless valve, Hidden Lake NOCA, sample ANSP WACA017. Fig. 39. External view of rapheless valve, type material, sample ANSP WACA019. Scale bars = 1 µm" figureDoi="http://doi.org/10.5281/zenodo.5085469" httpUri="https://zenodo.org/record/5085469/files/figure.png" pageId="4" pageNumber="53">Figs 35–39</figureCitation>
|
||
) revealed that the proximal raphe endings are internally slightly deflected in opposite directions (
|
||
<figureCitation id="9AB1BFD5FFE9FFA9B5242D0BFC89FA3C" box="[800,889,306,332]" captionStart="FIGURES 35–39" captionStartId="6.[151,258,852,874]" captionTargetBox="[380,1211,181,834]" captionTargetId="figure-179@6.[380,1211,181,834]" captionTargetPageId="6" captionText="FIGURES 35–39: Psammothidium lacustre sp. nov., SEM. Fig. 35. External view of raphe valve, Hidden Lake NOCA, sample ANSP WACA017. Fig. 36. Internal view of raphe valve, type material, sample ANSP WACA019. Fig. 37. Areolae on internal surface of raphe valve, type material, sample ANSP WACA019. Fig. 38. Internal view of rapheless valve, Hidden Lake NOCA, sample ANSP WACA017. Fig. 39. External view of rapheless valve, type material, sample ANSP WACA019. Scale bars = 1 µm" figureDoi="http://doi.org/10.5281/zenodo.5085469" httpUri="https://zenodo.org/record/5085469/files/figure.png" pageId="4" pageNumber="53">Fig. 36</figureCitation>
|
||
), similarly to
|
||
<taxonomicName id="C58AD8D3FFE9FFA9B21B2D0BFB4BFA3B" authorityName="Bukhtiyarova et Round" authorityYear="1996" baseAuthorityName="Hustedt" box="[1055,1211,305,331]" class="Bacillariophyceae" family="Achnanthidiaceae" genus="Psammothidium" higherTaxonomySource="GBIF" kingdom="Chromista" order="Achnanthales" pageId="4" pageNumber="53" phylum="Bacillariophyta" rank="species" species="helveticum">
|
||
<emphasis id="30FE7F42FFE9FFA9B21B2D0BFB4BFA3B" box="[1055,1211,305,331]" italics="true" pageId="4" pageNumber="53">P. helveticum</emphasis>
|
||
</taxonomicName>
|
||
(see
|
||
<bibRefCitation id="661BDEA1FFE9FFA9B2F82D0BFEBAFA03" author="Bukhtiyarova, L. & Round, F. E." pageId="4" pageNumber="53" pagination="1 - 30" refId="ref4414" refString="Bukhtiyarova, L. & Round, F. E. (1996) Revision of the genus Achnanthes sensu lato section Marginulatae Bukht. Sect. nov. of Achnanthidium Kutz. Diatom Research 11: 1 - 30. http: // dx. doi. org / 10.1080 / 0269249 X. 1996.9705361" type="journal article" year="1996">Bukhtiyarova & Round 1996</bibRefCitation>
|
||
, figure 23). The striae extend uninterrupted onto the mantle, and short striae are present near the central area and occasionally in other parts of valve margin (
|
||
<figureCitation id="9AB1BFD5FFE9FFA9B5C72DB9FBD0FAEA" box="[963,1056,384,410]" captionStart="FIGURES 35–39" captionStartId="6.[151,258,852,874]" captionTargetBox="[380,1211,181,834]" captionTargetId="figure-179@6.[380,1211,181,834]" captionTargetPageId="6" captionText="FIGURES 35–39: Psammothidium lacustre sp. nov., SEM. Fig. 35. External view of raphe valve, Hidden Lake NOCA, sample ANSP WACA017. Fig. 36. Internal view of raphe valve, type material, sample ANSP WACA019. Fig. 37. Areolae on internal surface of raphe valve, type material, sample ANSP WACA019. Fig. 38. Internal view of rapheless valve, Hidden Lake NOCA, sample ANSP WACA017. Fig. 39. External view of rapheless valve, type material, sample ANSP WACA019. Scale bars = 1 µm" figureDoi="http://doi.org/10.5281/zenodo.5085469" httpUri="https://zenodo.org/record/5085469/files/figure.png" pageId="4" pageNumber="53">Fig. 38</figureCitation>
|
||
). Areolae have round external foramina and transapically elongated internal openings (
|
||
<figureCitation id="9AB1BFD5FFE9FFA9B52E2D9FFC42FAB0" box="[810,946,422,448]" captionStart="FIGURES 35–39" captionStartId="6.[151,258,852,874]" captionTargetBox="[380,1211,181,834]" captionTargetId="figure-179@6.[380,1211,181,834]" captionTargetPageId="6" captionText="FIGURES 35–39: Psammothidium lacustre sp. nov., SEM. Fig. 35. External view of raphe valve, Hidden Lake NOCA, sample ANSP WACA017. Fig. 36. Internal view of raphe valve, type material, sample ANSP WACA019. Fig. 37. Areolae on internal surface of raphe valve, type material, sample ANSP WACA019. Fig. 38. Internal view of rapheless valve, Hidden Lake NOCA, sample ANSP WACA017. Fig. 39. External view of rapheless valve, type material, sample ANSP WACA019. Scale bars = 1 µm" figureDoi="http://doi.org/10.5281/zenodo.5085469" httpUri="https://zenodo.org/record/5085469/files/figure.png" pageId="4" pageNumber="53">Figs 37, 39</figureCitation>
|
||
).
|
||
</paragraph>
|
||
<paragraph id="0235A350FFE9FFA9B6C22DF4FBFAF9D8" blockId="4.[151,1440,151,680]" pageId="4" pageNumber="53">
|
||
The shape of the axial and central areas on rapheless valves is similar in
|
||
<taxonomicName id="C58AD8D3FFE9FFA9B2232DF5FABBFA96" authorityName="Enache & Potapova & Sheibley & Moran" authorityYear="2013" box="[1063,1355,460,486]" class="Bacillariophyceae" family="Achnanthidiaceae" genus="Psammothidium" higherTaxonomySource="GBIF" kingdom="Chromista" order="Achnanthales" pageId="4" pageNumber="53" phylum="Bacillariophyta" rank="species" species="lacustre">
|
||
<emphasis id="30FE7F42FFE9FFA9B2232DF5FABBFA96" box="[1063,1355,460,486]" italics="true" pageId="4" pageNumber="53">Psammothidium lacustre</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName id="C58AD8D3FFE9FFA9B3822DF4FEE8F97D" authorityName="Bukhtiyarova et Round" authorityYear="1996" baseAuthorityName="Hustedt" class="Bacillariophyceae" family="Achnanthidiaceae" genus="Psammothidium" higherTaxonomySource="GBIF" kingdom="Chromista" order="Achnanthales" pageId="4" pageNumber="53" phylum="Bacillariophyta" rank="species" species="helveticum">
|
||
<emphasis id="30FE7F42FFE9FFA9B3822DF4FEE8F97D" italics="true" pageId="4" pageNumber="53">P. helveticum</emphasis>
|
||
</taxonomicName>
|
||
, except that the central area is narrower in
|
||
<taxonomicName id="C58AD8D3FFE9FFA9B5202DCDFC34F97D" authorityName="Bukhtiyarova et Round" authorityYear="1996" baseAuthorityName="Hustedt" box="[804,964,499,525]" class="Bacillariophyceae" family="Achnanthidiaceae" genus="Psammothidium" higherTaxonomySource="GBIF" kingdom="Chromista" order="Achnanthales" pageId="4" pageNumber="53" phylum="Bacillariophyta" rank="species" species="helveticum">
|
||
<emphasis id="30FE7F42FFE9FFA9B5202DCDFC34F97D" box="[804,964,499,525]" italics="true" pageId="4" pageNumber="53">P. helveticum</emphasis>
|
||
</taxonomicName>
|
||
. Internally, the shape of areolae is also different: elongated with rims and grooves in
|
||
<taxonomicName id="C58AD8D3FFE9FFA9B4C02E23FCB4F943" authorityName="Enache & Potapova & Sheibley & Moran" authorityYear="2013" box="[708,836,537,564]" class="Bacillariophyceae" family="Achnanthidiaceae" genus="Psammothidium" higherTaxonomySource="GBIF" kingdom="Chromista" order="Achnanthales" pageId="4" pageNumber="53" phylum="Bacillariophyta" rank="species" species="lacustre">
|
||
<emphasis id="30FE7F42FFE9FFA9B4C02E23FD23F943" box="[708,723,538,563]" italics="true" pageId="4" pageNumber="53">P</emphasis>
|
||
.
|
||
<emphasis id="30FE7F42FFE9FFA9B4E02E20FCB4F943" box="[740,836,537,563]" italics="true" pageId="4" pageNumber="53">lacustre</emphasis>
|
||
</taxonomicName>
|
||
versus round or rectangular in
|
||
<taxonomicName id="C58AD8D3FFE9FFA9B2C62E23FA93F943" authorityName="Bukhtiyarova et Round" authorityYear="1996" baseAuthorityName="Hustedt" box="[1218,1379,537,563]" class="Bacillariophyceae" family="Achnanthidiaceae" genus="Psammothidium" higherTaxonomySource="GBIF" kingdom="Chromista" order="Achnanthales" pageId="4" pageNumber="53" phylum="Bacillariophyta" rank="species" species="helveticum">
|
||
<emphasis id="30FE7F42FFE9FFA9B2C62E23FA93F943" box="[1218,1379,537,563]" italics="true" pageId="4" pageNumber="53">P. helveticum</emphasis>
|
||
</taxonomicName>
|
||
(see
|
||
<bibRefCitation id="661BDEA1FFE9FFA9B6932E78FE00F92B" author="Bukhtiyarova, L. & Round, F. E." box="[151,496,577,603]" pageId="4" pageNumber="53" pagination="1 - 30" refId="ref4414" refString="Bukhtiyarova, L. & Round, F. E. (1996) Revision of the genus Achnanthes sensu lato section Marginulatae Bukht. Sect. nov. of Achnanthidium Kutz. Diatom Research 11: 1 - 30. http: // dx. doi. org / 10.1080 / 0269249 X. 1996.9705361" type="journal article" year="1996">Bukhtiyarova & Round 1996</bibRefCitation>
|
||
, figure 23). In LM,
|
||
<taxonomicName id="C58AD8D3FFE9FFA9B4DA2E78FCA8F92A" authorityName="Enache & Potapova & Sheibley & Moran" authorityYear="2013" box="[734,856,576,602]" class="Bacillariophyceae" family="Achnanthidiaceae" genus="Psammothidium" higherTaxonomySource="GBIF" kingdom="Chromista" order="Achnanthales" pageId="4" pageNumber="53" phylum="Bacillariophyta" rank="species" species="lacustre">
|
||
<emphasis id="30FE7F42FFE9FFA9B4DA2E78FCA8F92A" box="[734,856,576,602]" italics="true" pageId="4" pageNumber="53">P. lacustre</emphasis>
|
||
</taxonomicName>
|
||
is relatively easy to separate from
|
||
<taxonomicName id="C58AD8D3FFE9FFA9B2F32E78FA63F92A" authorityName="Bukhtiyarova et Round" authorityYear="1996" baseAuthorityName="Hustedt" box="[1271,1427,576,602]" class="Bacillariophyceae" family="Achnanthidiaceae" genus="Psammothidium" higherTaxonomySource="GBIF" kingdom="Chromista" order="Achnanthales" pageId="4" pageNumber="53" phylum="Bacillariophyta" rank="species" species="helveticum">
|
||
<emphasis id="30FE7F42FFE9FFA9B2F32E78FA63F92A" box="[1271,1427,576,602]" italics="true" pageId="4" pageNumber="53">P. helveticum</emphasis>
|
||
</taxonomicName>
|
||
;
|
||
<taxonomicName id="C58AD8D3FFE9FFA9B6932E51FEEBF9F1" authorityName="Enache & Potapova & Sheibley & Moran" authorityYear="2013" box="[151,283,615,641]" class="Bacillariophyceae" family="Achnanthidiaceae" genus="Psammothidium" higherTaxonomySource="GBIF" kingdom="Chromista" order="Achnanthales" pageId="4" pageNumber="53" phylum="Bacillariophyta" rank="species" species="lacustre">
|
||
<emphasis id="30FE7F42FFE9FFA9B6932E51FEEBF9F1" box="[151,283,615,641]" italics="true" pageId="4" pageNumber="53">P. lacustre</emphasis>
|
||
</taxonomicName>
|
||
is larger, has more lanceolate shape, and coarser striae (22–24 versus 23–28) and areolae.
|
||
<taxonomicName id="C58AD8D3FFE9FFA9B6932EB4FE49F9D7" authorityName="Enache & Potapova & Sheibley & Moran" authorityYear="2013" box="[151,441,653,679]" class="Bacillariophyceae" family="Achnanthidiaceae" genus="Psammothidium" higherTaxonomySource="GBIF" kingdom="Chromista" order="Achnanthales" pageId="4" pageNumber="53" phylum="Bacillariophyta" rank="species" species="lacustre">
|
||
<emphasis id="30FE7F42FFE9FFA9B6932EB4FE49F9D7" box="[151,441,653,679]" italics="true" pageId="4" pageNumber="53">Psammothidium lacustre</emphasis>
|
||
</taxonomicName>
|
||
was rare in study lakes (<1% relative abundance).
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |