360 lines
46 KiB
XML
360 lines
46 KiB
XML
<document id="B1315028D2344F37CBBFA3496DC9B23C" ID-CLB-Dataset="6176" ID-DOI="10.11646/phytotaxa.30.1.1" ID-GBIF-Dataset="e617ba0d-6329-4481-8c82-15d70cee421c" ID-ISSN="1179-3163" ID-Zenodo-Dep="4894396" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1622649201366" checkinUser="felipe" docAuthor="Levkov, Zlatko & Williams, David M." docDate="2011" docId="03AC87D2B852FFC400FDFBB320CDDF19" docLanguage="en" docName="Phytotaxa.30.1-41.pdf.imf" docOrigin="Phytotaxa 30" docSource="http://biotaxa.org/Phytotaxa/article/view/phytotaxa.30.1.1" docStyle="DocumentStyle:13F189B31CB4CCCE9197361A4E100104.3:Phytotaxa.2011-2013.journal_article" docStyleId="13F189B31CB4CCCE9197361A4E100104" docStyleName="Phytotaxa.2011-2013.journal_article" docStyleVersion="3" docTitle="Placoneis pseudabundans Levkov 2011, sp. nov." docType="treatment" docVersion="8" lastPageNumber="16" masterDocId="FF95FFAAB85FFFCB006AFF802103DC05" masterDocTitle="Fifteen new diatom (Bacillariophyta) species from Lake Ohrid, Macedonia" masterLastPageNumber="41" masterPageNumber="1" pageNumber="14" updateTime="1698998376749" updateUser="ExternalLinkService" zenodo-license-document="CLOSED">
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<mods:title id="D9CD915AEDA0BC0E6626CF7A7159254D">Fifteen new diatom (Bacillariophyta) species from Lake Ohrid, Macedonia</mods:title>
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<mods:name id="CEF69C9D9AFF338121ED232A490A44ED" type="personal">
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<mods:namePart id="A8259E40B4678A309D112E0E3725C4B9">Levkov, Zlatko</mods:namePart>
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<mods:affiliation id="C04A7C440512F0768D0EA95C9D1C7BCD">Institute of Biology, Faculty of Natural Sciences, Gazi Baba bb, Skopje, R. Macedonia. E-mail: zlevkov @ iunona. pmf. ukim. edu. mk Department of Botany, the Natural History Museum, Cromwell Road, London, United Kingdom. Email: d. m. williams @ nhm. ac. uk</mods:affiliation>
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<mods:namePart id="7D486092BA5CE8E61C9CE9D2B4DAA5EF">Williams, David M.</mods:namePart>
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<mods:typeOfResource id="981060C31030722AF49FB8F481231949">text</mods:typeOfResource>
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<mods:title id="A4EB7D9C9012A4CCB5087E734F19603B">Phytotaxa</mods:title>
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<mods:part id="F29934F61231B788CDB683139033FD28">
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<mods:date id="66C4BB4488CF002051D37ACE43587334">2011</mods:date>
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<mods:number id="D3315787750B3C8549D4309DB31324AC">30</mods:number>
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<treatment id="03AC87D2B852FFC400FDFBB320CDDF19" ID-DOI="http://doi.org/10.5281/zenodo.4924761" ID-GBIF-Taxon="182645400" ID-Zenodo-Dep="4924761" LSID="urn:lsid:plazi:treatment:03AC87D2B852FFC400FDFBB320CDDF19" httpUri="http://treatment.plazi.org/id/03AC87D2B852FFC400FDFBB320CDDF19" lastPageId="15" lastPageNumber="16" pageId="13" pageNumber="14">
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<subSubSection id="C31F654FB852FFC600FDFBB32348D8F5" pageId="13" pageNumber="14" type="nomenclature">
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<paragraph id="8BBA36C4B852FFC600FDFBB32279D855" blockId="13.[151,1436,1075,1338]" box="[151,890,1075,1104]" pageId="13" pageNumber="14">
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<heading id="D0F281A8B852FFC600FDFBB32279D855" bold="true" box="[151,890,1075,1104]" fontSize="12" level="1" pageId="13" pageNumber="14" reason="1">
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<emphasis id="B971EAD6B852FFC600FDFBB32279D855" bold="true" box="[151,890,1075,1104]" pageId="13" pageNumber="14">
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<taxonomicName id="4C054D47B852FFC600FDFBB32359D855" authority="Levkov" authorityName="Levkov" authorityYear="2011" box="[151,602,1075,1104]" class="Bacillariophyceae" family="Cymbellaceae" genus="Placoneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="13" pageNumber="14" phylum="Bacillariophyta" rank="species" species="pseudabundans" status="sp. nov.">
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<emphasis id="B971EAD6B852FFC600FDFBB320EED84A" bold="true" box="[151,493,1075,1103]" italics="true" pageId="13" pageNumber="14">Placoneis pseudabundans</emphasis>
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Levkov
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</taxonomicName>
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,
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<emphasis id="B971EAD6B852FFC60202FBB323C8D84A" bold="true" box="[616,715,1075,1103]" italics="true" pageId="13" pageNumber="14">
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<taxonomicNameLabel id="A24257ADB852FFC60202FBB323C8D84A" box="[616,715,1075,1103]" pageId="13" pageNumber="14" rank="species">sp. nov.</taxonomicNameLabel>
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</emphasis>
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(
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<figureCitation id="133E2A41B852FFC602B6FBB32272D855" box="[732,881,1075,1104]" captionStart="FIGURES 90–107" captionStartId="14.[151,269,1671,1695]" captionTargetBox="[352,1234,387,1647]" captionTargetId="figure-235@14.[352,1234,387,1647]" captionTargetPageId="14" captionText="FIGURES 90–107: LM micrographs. Figs 90, 91. Placoneis clementis. Figs 92–95. Placoneis pseudabundans. Fig. 96. Placoneis juriljii. Figs 97–107. Placoneis subelegans. Scale bar = 10 µm. Figs 90, 91, fossil deposit Köpecz, Romania, Figs 92–107. Lake Ohrid, recent." figureDoi="http://doi.org/10.5281/zenodo.4894418" httpUri="https://zenodo.org/record/4894418/files/figure.png" pageId="13" pageNumber="14">Figs 92–95</figureCitation>
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)
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</emphasis>
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||
</heading>
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||
</paragraph>
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<paragraph id="8BBA36C4B852FFC600FDFBD92348D8F5" blockId="13.[151,1436,1075,1338]" pageId="13" pageNumber="14">
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<emphasis id="B971EAD6B852FFC600FDFBD92348D8F5" italics="true" pageId="13" pageNumber="14">
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<collectingRegion id="49C1F826B852FFC600FDFBD921DDD875" box="[151,222,1113,1136]" country="Bulgaria" name="Vratsa" pageId="13" pageNumber="14">Valvae</collectingRegion>
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late lanceolatae apicibus curte protractis rostratis,
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<quantity id="4CFD9B21B852FFC60361FBD9227BD875" box="[779,888,1113,1136]" metricMagnitude="-2" metricUnit="m" metricValue="2.45" metricValueMax="2.8" metricValueMin="2.1" pageId="13" pageNumber="14" unit="mm" value="24.5" valueMax="28.0" valueMin="21.0">21–28 µm</quantity>
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longae,
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<quantity id="4CFD9B21B852FFC603BEFBD92544D875" box="[980,1095,1113,1136]" metricMagnitude="-3" metricUnit="m" metricValue="9.75" metricValueMax="10.5" metricValueMin="9.0" pageId="13" pageNumber="14" unit="mm" value="9.75" valueMax="10.5" valueMin="9.0">9–10.5 µm</quantity>
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latae. Raphe filiformis, linearis poris centralibus paulo incrassatis. Area axialis angusta, linearis, area centralis angusta, elliptica striis circum aream centralem regulariter abbreviatis utrimque. Duae stigmata adsunt dense sita ad striam mediam. Striae transapicales paulo radiantes in media parte, tum valde radiantes sub apices
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<quantity id="4CFD9B21B852FFC60462FB392565D8D5" box="[1032,1126,1209,1232]" metricMagnitude="-1" metricUnit="m" metricValue="3.556" metricValueMax="3.81" metricValueMin="3.302" pageId="13" pageNumber="14" unit="in" value="14.0" valueMax="15.0" valueMin="13.0">13–15 in</quantity>
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<quantity id="4CFD9B21B852FFC60407FB3925B6D8D5" box="[1133,1205,1209,1232]" metricMagnitude="-2" metricUnit="m" metricValue="1.0" pageId="13" pageNumber="14" unit="mm" value="10.0">10 µm</quantity>
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. Puncta striarum non aspectabilia microscopio photonico.
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||
</emphasis>
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</paragraph>
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||
</subSubSection>
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<subSubSection id="C31F654FB852FFC400FDFB7820CDDF19" lastPageId="15" lastPageNumber="16" pageId="13" pageNumber="14" type="materials_examined">
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<paragraph id="8BBA36C4B852FFC600FDFB782417D93F" blockId="13.[151,1436,1075,1338]" pageId="13" pageNumber="14">
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<materialsCitation id="3B6D3C99B852FFC600FDFB78249FD916" ID-GBIF-Occurrence="3128566329" box="[151,1436,1272,1299]" collectingDate="2007-03-17" country="Macedonia" elevation="5" location="St. Naum" municipality="Lake" pageId="13" pageNumber="14" specimenCount="1" stateProvince="Ohrid" typeStatus="holotype">
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<emphasis id="B971EAD6B852FFC600FDFB7821D4D917" bold="true" box="[151,215,1272,1298]" pageId="13" pageNumber="14">
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<typeStatus id="54BE8866B852FFC600FDFB7821D4D917" box="[151,215,1272,1298]" pageId="13" pageNumber="14">Type</typeStatus>
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</emphasis>
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:—
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<collectingCountry id="F3127654B852FFC60091FB7920BED916" box="[251,445,1273,1299]" name="Macedonia" pageId="13" pageNumber="14">MACEDONIA</collectingCountry>
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.
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<collectingMunicipality id="6BDEACBEB852FFC601A0FB792304D916" box="[458,519,1273,1299]" pageId="13" pageNumber="14">Lake</collectingMunicipality>
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<collectingRegion id="49C1F826B852FFC6027AFB792358D916" box="[528,603,1273,1299]" country="Macedonia" name="Ohrid" pageId="13" pageNumber="14">Ohrid</collectingRegion>
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,
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<location id="8EDA601FB852FFC60200FB7923E0D916" LSID="urn:lsid:plazi:treatment:03AC87D2B852FFC400FDFBB320CDDF19:8EDA601FB852FFC60200FB7923E0D916" box="[618,739,1273,1299]" country="Macedonia" municipality="Lake" name="St. Naum" pageId="13" pageNumber="14" stateProvince="Ohrid">St. Naum</location>
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, shore, mud
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<elevation id="0028D1F7B852FFC603EEFB792506D916" box="[900,1029,1273,1299]" metricMagnitude="0" metricUnit="m" metricValue="5.0" pageId="13" pageNumber="14" unit="m" value="5.0">
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<quantity id="4CFD9B21B852FFC603EEFB7922B7D916" box="[900,948,1273,1299]" metricMagnitude="0" metricUnit="m" metricValue="5.0" pageId="13" pageNumber="14" unit="m" value="5.0">5 m</quantity>
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depth
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</elevation>
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||
, collection date:
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||
<date id="FFBB1004B852FFC604B4FB79249FD916" box="[1246,1436,1273,1299]" pageId="13" pageNumber="14" value="2007-03-17">
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<collectingDate id="EFFFE9ECB852FFC604B4FB79249FD916" box="[1246,1436,1273,1299]" pageId="13" pageNumber="14" value="2007-03-17">17 March 2007</collectingDate>
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</date>
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</materialsCitation>
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||
(accession No.
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||
<collectionCode id="ED14AE01B852FFC60120FAA020B4D93F" box="[330,439,1312,1338]" country="Macedonia" httpUri="http://grbio.org/cool/40e3-v9id" name="Institute of Biology" pageId="13" pageNumber="14" type="Herbarium">MKNDC</collectionCode>
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001128).
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||
<materialsCitation id="3B6D3C99B852FFC60244FAA02413D93F" ID-GBIF-Occurrence="3128566322" accessionNumber="BM 101472" box="[558,1296,1312,1338]" collectionCode="BM" pageId="13" pageNumber="14" specimenCode="MKNDC 001128" specimenCount="1" typeStatus="holotype">
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||
Slide
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<collectionCode id="ED14AE01B852FFC6021BFAA0239CD93F" box="[625,671,1312,1338]" country="United Kingdom" name="Bristol Museum" pageId="13" pageNumber="14">BM</collectionCode>
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101472 (
|
||
<typeStatus id="54BE8866B852FFC60364FAA02278D93F" box="[782,891,1312,1338]" pageId="13" pageNumber="14" type="holotype">holotype</typeStatus>
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). Slide
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<specimenCode id="DBA39EBFB852FFC603B8FAA0259ED93F" box="[978,1181,1312,1338]" collectionCode="MKNDC" country="Macedonia" httpUri="http://grbio.org/cool/40e3-v9id" name="Institute of Biology" pageId="13" pageNumber="14" type="Herbarium">MKNDC 001128</specimenCode>
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(isotype)
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</materialsCitation>
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.
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||
</paragraph>
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<paragraph id="8BBA36C4B852FFC600ACFAED2329DA27" blockId="13.[151,1436,1389,2034]" pageId="13" pageNumber="14">
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Valves broadly lanceolate with short, protracted to rostrate ends,
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<quantity id="4CFD9B21B852FFC6038CFAED2560D982" box="[998,1123,1389,1415]" metricMagnitude="-2" metricUnit="m" metricValue="2.45" metricValueMax="2.8" metricValueMin="2.1" pageId="13" pageNumber="14" unit="mm" value="24.5" valueMax="28.0" valueMin="21.0">21–28 µm</quantity>
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long, 9.0–
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||
<quantity id="4CFD9B21B852FFC60481FAED2453D982" box="[1259,1360,1389,1415]" metricMagnitude="-2" metricUnit="m" metricValue="1.05" pageId="13" pageNumber="14" unit="mm" value="10.5">10.5 µm</quantity>
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wide. Raphe branches filiform and straight, central pores weakly broadened. Axial area narrow, linear; central area narrow, elliptical, formed by regular shortening of central striae. Two stigmata present in central area, located close to central striae. Striae weakly radiate becoming strongly radiate towards valve ends,
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||
<quantity id="4CFD9B21B852FFC604BCFA61243CD9FE" box="[1238,1343,1505,1531]" metricMagnitude="-1" metricUnit="m" metricValue="3.556" metricValueMax="3.81" metricValueMin="3.302" pageId="13" pageNumber="14" unit="in" value="14.0" valueMax="15.0" valueMin="13.0">13–15 in</quantity>
|
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<quantity id="4CFD9B21B852FFC6052DFA61249BD9FE" box="[1351,1432,1505,1531]" metricMagnitude="-2" metricUnit="m" metricValue="1.0" pageId="13" pageNumber="14" unit="mm" value="10.0">10 µm</quantity>
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. Areolae not resolved in LM (LM).
|
||
</paragraph>
|
||
<paragraph id="8BBA36C4B852FFC500ACF9AE25E3DD49" blockId="13.[151,1436,1389,2034]" lastBlockId="14.[151,1436,152,332]" lastPageId="14" lastPageNumber="15" pageId="13" pageNumber="14">
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||
<emphasis id="B971EAD6B852FFC600ACF9AE206FDA4D" bold="true" box="[198,364,1582,1608]" pageId="13" pageNumber="14">Observations</emphasis>
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||
:—One of the main features of
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||
<taxonomicName id="4C054D47B852FFC60285F9AF22C6DA4D" authorityName="Levkov" authorityYear="2011" box="[751,965,1583,1608]" class="Bacillariophyceae" family="Cymbellaceae" genus="Placoneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="13" pageNumber="14" phylum="Bacillariophyta" rank="species" species="pseudabundans">
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||
<emphasis id="B971EAD6B852FFC60285F9AF22C6DA4D" box="[751,965,1583,1608]" italics="true" pageId="13" pageNumber="14">P. pseudabundans</emphasis>
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||
</taxonomicName>
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||
is the presence of two stigmata in the central area. This character is present in several
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<taxonomicName id="4C054D47B852FFC602ACF9D52296DA6A" box="[710,917,1621,1647]" class="Bacillariophyceae" family="Cymbellaceae" genus="Placoneis" kingdom="Chromista" order="Cymbellales" pageId="13" pageNumber="14" phylum="Bacillariophyta" rank="species" species="undetermined">
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<emphasis id="B971EAD6B852FFC602ACF9D5223ADA6B" box="[710,825,1621,1646]" italics="true" pageId="13" pageNumber="14">Placoneis</emphasis>
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||
species
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||
</taxonomicName>
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such as
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<taxonomicName id="4C054D47B852FFC60392F9D521E0DA93" authority="Metzeltin et al. (2005" authorityName="Metzeltin" authorityYear="2005" class="Bacillariophyceae" family="Cymbellaceae" genus="Placoneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="13" pageNumber="14" phylum="Bacillariophyta" rank="species" species="abundans">
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||
<emphasis id="B971EAD6B852FFC60392F9D525E7DA6B" box="[1016,1252,1621,1646]" italics="true" pageId="13" pageNumber="14">Placoneis abundans</emphasis>
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||
<bibRefCitation id="EF944B35B852FFC60481F9D521E0DA93" author="Metzeltin, D. & Lange-Bertalot, H. & Garcia-Rodriguez, F." pageId="13" pageNumber="14" refId="ref20906" refString="Metzeltin, D., Lange-Bertalot, H. & Garcia-Rodriguez, F. (2005) Diatoms of Uruguay. Compared with other taxa from South America and elsewhere. Iconographia Diatomologica 15. Rugell, A. R. G. Gantner Verlag, 736 pp." type="book" year="2005">
|
||
Metzeltin
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||
<emphasis id="B971EAD6B852FFC60508F9D5249FDA6B" box="[1378,1436,1621,1646]" italics="true" pageId="13" pageNumber="14">et al.</emphasis>
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||
(2005
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||
</bibRefCitation>
|
||
</taxonomicName>
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||
: figs 73: 1–4),
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<taxonomicName id="4C054D47B852FFC601CAF9FC2245DA93" authority="(Grunow) Cox (1988" authorityName="Cox" authorityYear="1988" baseAuthorityName="Grunow" box="[416,838,1660,1686]" class="Bacillariophyceae" family="Cymbellaceae" genus="Placoneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="13" pageNumber="14" phylum="Bacillariophyta" rank="species" species="clementis">
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<emphasis id="B971EAD6B852FFC601CAF9FC2337DA90" box="[416,564,1660,1685]" italics="true" pageId="13" pageNumber="14">P. clementis</emphasis>
|
||
(Grunow)
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<bibRefCitation id="EF944B35B852FFC602D5F9FC2245DA93" author="Cox, E. J." box="[703,838,1660,1686]" pageId="13" pageNumber="14" pagination="9 - 38" refId="ref18414" refString="Cox, E. J. (1988) Taxonomic studies on the diatom genus Navicula Bory. V. The establishment of Parlibellus gen. nov. for some members of Navicula sect. Microstigmaticae. Diatom Research 3: 9 - 38." type="journal article" year="1988">Cox (1988</bibRefCitation>
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||
</taxonomicName>
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||
: figs 5: 1, 2) and
|
||
<taxonomicName id="4C054D47B852FFC60449F9FC249FDA93" authority="(Hustedt) Cox" authorityName="Cox" baseAuthorityName="Hustedt" box="[1059,1436,1660,1686]" class="Bacillariophyceae" family="Cymbellaceae" genus="Placoneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="13" pageNumber="14" phylum="Bacillariophyta" rank="species" species="clementoides">
|
||
<emphasis id="B971EAD6B852FFC60449F9FC2531DA90" box="[1059,1074,1660,1685]" italics="true" pageId="13" pageNumber="14">P</emphasis>
|
||
.
|
||
<emphasis id="B971EAD6B852FFC60429F9FC25E0DA90" box="[1091,1251,1660,1685]" italics="true" pageId="13" pageNumber="14">clementoides</emphasis>
|
||
(Hustedt) Cox
|
||
</taxonomicName>
|
||
(
|
||
<bibRefCitation id="EF944B35B852FFC600F4F9222042DAB9" author="Hustedt, F." box="[158,321,1698,1724]" pageId="13" pageNumber="14" pagination="271 - 290" refId="ref19299" refString="Hustedt, F. (1944) Neue und wenig bekannte Diatomeen. Bericht der Deutschen Botanischen Gessellschaft 61: 271 - 290." type="journal article" year="1944">Hustedt 1944</bibRefCitation>
|
||
: figs 8: 19, 20;
|
||
<bibRefCitation id="EF944B35B852FFC6019FF92223ACDAB9" author="Simonsen, R." box="[501,687,1698,1724]" pageId="13" pageNumber="14" refId="ref21745" refString="Simonsen, R. (1987) Atlas and Catalogue of the Diatom Types of Friedrich Hustedt. Berlin & Stuttgart: J. Cramer, 3 volumes, 525 pp., 772 pls." type="book" year="1987">Simonsen 1987</bibRefCitation>
|
||
: figs 476: 4–6).
|
||
<taxonomicName id="4C054D47B852FFC60301F9232554DAB9" box="[875,1111,1699,1724]" class="Bacillariophyceae" family="Cymbellaceae" genus="Placoneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="13" pageNumber="14" phylum="Bacillariophyta" rank="species" species="abundans">
|
||
<emphasis id="B971EAD6B852FFC60301F9232554DAB9" box="[875,1111,1699,1724]" italics="true" pageId="13" pageNumber="14">Placoneis abundans</emphasis>
|
||
</taxonomicName>
|
||
is characterized by ellipticlanceolate valves with abruptly protracted and subcapitate ends, while the valves of
|
||
<taxonomicName id="4C054D47B852FFC604FCF949246DDAE7" authorityName="Levkov" authorityYear="2011" box="[1174,1390,1737,1762]" class="Bacillariophyceae" family="Cymbellaceae" genus="Placoneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="13" pageNumber="14" phylum="Bacillariophyta" rank="species" species="pseudabundans">
|
||
<emphasis id="B971EAD6B852FFC604FCF949246DDAE7" box="[1174,1390,1737,1762]" italics="true" pageId="13" pageNumber="14">P. pseudabundans</emphasis>
|
||
</taxonomicName>
|
||
are lanceolate with short, protracted to rostrate ends. Additionally, there are differences in the shape of the central area. The central area in
|
||
<taxonomicName id="4C054D47B852FFC601DFF8972384DB35" authorityName="Levkov" authorityYear="2011" box="[437,647,1815,1840]" class="Bacillariophyceae" family="Cymbellaceae" genus="Placoneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="13" pageNumber="14" phylum="Bacillariophyta" rank="species" species="pseudabundans">
|
||
<emphasis id="B971EAD6B852FFC601DFF8972384DB35" box="[437,647,1815,1840]" italics="true" pageId="13" pageNumber="14">P. pseudabundans</emphasis>
|
||
</taxonomicName>
|
||
is narrow and elliptical, formed by regular shortening of the central striae, while in
|
||
<taxonomicName id="4C054D47B852FFC60131F8BD20F2DB53" box="[347,497,1853,1878]" class="Bacillariophyceae" family="Cymbellaceae" genus="Placoneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="13" pageNumber="14" phylum="Bacillariophyta" rank="species" species="abundans">
|
||
<emphasis id="B971EAD6B852FFC60131F8BD20F2DB53" box="[347,497,1853,1878]" italics="true" pageId="13" pageNumber="14">P. abundans</emphasis>
|
||
</taxonomicName>
|
||
the central area is wider and bordered by alternating short and long striae.
|
||
<taxonomicName id="4C054D47B852FFC600FDF8E42341DB7B" authority="(Grunow) Cox" authorityName="Cox" authorityYear="1988" baseAuthorityName="Grunow" box="[151,578,1892,1918]" class="Bacillariophyceae" family="Cymbellaceae" genus="Placoneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="13" pageNumber="14" phylum="Bacillariophyta" rank="species" species="clementis">
|
||
<emphasis id="B971EAD6B852FFC600FDF8E4208BDB78" box="[151,392,1892,1917]" italics="true" pageId="13" pageNumber="14">Placoneis clementis</emphasis>
|
||
(Grunow) Cox
|
||
</taxonomicName>
|
||
is a fossil species (
|
||
<bibRefCitation id="EF944B35B852FFC6035AF8E422D8DB7B" author="Grunow, A." box="[816,987,1892,1918]" pageId="13" pageNumber="14" pagination="136 - 159" refId="ref18918" refString="Grunow, A. (1882) Beitrage zur Kenntniss der Fossilen Diatomeen Osterreich - Ungarns. In: E. von Mojsisovics und N. Neumayr (eds), Beitrage zur Palaontologie Osterreich - Ungarns und des Orients, 2 (4), pp. 136 - 159, Wien: Alfred Holder, K. K. hof- und Universitats Buchhandler." type="journal article" year="1882">Grunow 1882</bibRefCitation>
|
||
) characterized by broadly lanceolate valves with short, protracted and obtusely rounded ends, and coarsely punctated striae with 18–20 areolae in
|
||
<quantity id="4CFD9B21B852FFC600FDF83121E6DBCE" box="[151,229,1969,1995]" metricMagnitude="-2" metricUnit="m" metricValue="1.0" pageId="13" pageNumber="14" unit="mm" value="10.0">10 µm</quantity>
|
||
(
|
||
<figureCitation id="133E2A41B852FFC6009FF8312082DBCE" box="[245,385,1969,1995]" captionStart="FIGURES 90–107" captionStartId="14.[151,269,1671,1695]" captionTargetBox="[352,1234,387,1647]" captionTargetId="figure-235@14.[352,1234,387,1647]" captionTargetPageId="14" captionText="FIGURES 90–107: LM micrographs. Figs 90, 91. Placoneis clementis. Figs 92–95. Placoneis pseudabundans. Fig. 96. Placoneis juriljii. Figs 97–107. Placoneis subelegans. Scale bar = 10 µm. Figs 90, 91, fossil deposit Köpecz, Romania, Figs 92–107. Lake Ohrid, recent." figureDoi="http://doi.org/10.5281/zenodo.4894418" httpUri="https://zenodo.org/record/4894418/files/figure.png" pageId="13" pageNumber="14">Figs 90, 91</figureCitation>
|
||
). There are probably two different entities described as
|
||
<taxonomicName id="4C054D47B852FFC6044BF8312494DBCE" authority="Hustedt" authorityName="Hustedt" box="[1057,1431,1969,1995]" class="Bacillariophyceae" family="Naviculaceae" genus="Navicula" higherTaxonomySource="CoL" kingdom="Animalia" order="Naviculales" pageId="13" pageNumber="14" phylum="Ochrophyta" rank="species" species="clementoides">
|
||
<emphasis id="B971EAD6B852FFC6044BF831242CDBCF" box="[1057,1327,1969,1994]" italics="true" pageId="13" pageNumber="14">Navicula clementoides</emphasis>
|
||
Hustedt
|
||
</taxonomicName>
|
||
, with valves of both depicted in
|
||
<bibRefCitation id="EF944B35B852FFC60267F85823BADBF7" author="Hustedt, F." box="[525,697,2008,2034]" pageId="13" pageNumber="14" pagination="271 - 290" refId="ref19299" refString="Hustedt, F. (1944) Neue und wenig bekannte Diatomeen. Bericht der Deutschen Botanischen Gessellschaft 61: 271 - 290." type="journal article" year="1944">Hustedt (1944</bibRefCitation>
|
||
: figs 8: 19, 20) and
|
||
<bibRefCitation id="EF944B35B852FFC603CCF8582568DBF7" author="Simonsen, R." box="[934,1131,2008,2034]" pageId="13" pageNumber="14" refId="ref21745" refString="Simonsen, R. (1987) Atlas and Catalogue of the Diatom Types of Friedrich Hustedt. Berlin & Stuttgart: J. Cramer, 3 volumes, 525 pp., 772 pls." type="book" year="1987">Simonsen (1987</bibRefCitation>
|
||
: figs 476: 6–10) with two stigmata in the central area. The first
|
||
<typeStatus id="54BE8866B851FFC50227FF18237CDCB7" box="[589,639,152,178]" pageId="14" pageNumber="15">type</typeStatus>
|
||
of valve has elliptic-lanceolate outline with abruptly protracted and capitated ends (
|
||
<bibRefCitation id="EF944B35B851FFC5013BFF3E20F6DCDD" author="Hustedt, F." box="[337,501,190,216]" pageId="14" pageNumber="15" pagination="271 - 290" refId="ref19299" refString="Hustedt, F. (1944) Neue und wenig bekannte Diatomeen. Bericht der Deutschen Botanischen Gessellschaft 61: 271 - 290." type="journal article" year="1944">Hustedt 1944</bibRefCitation>
|
||
, fig. 20), while the second has strictly lanceolate valves but neither protracted nor cuneate ends (
|
||
<bibRefCitation id="EF944B35B851FFC50107FF65230CDCFA" author="Hustedt, F." box="[365,527,229,255]" pageId="14" pageNumber="15" pagination="271 - 290" refId="ref19299" refString="Hustedt, F. (1944) Neue und wenig bekannte Diatomeen. Bericht der Deutschen Botanischen Gessellschaft 61: 271 - 290." type="journal article" year="1944">Hustedt 1944</bibRefCitation>
|
||
, fig. 19). The differences between
|
||
<taxonomicName id="4C054D47B851FFC503C1FF65257CDCFB" authorityName="Levkov" authorityYear="2011" box="[939,1151,229,254]" class="Bacillariophyceae" family="Cymbellaceae" genus="Placoneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="14" pageNumber="15" phylum="Bacillariophyta" rank="species" species="pseudabundans">
|
||
<emphasis id="B971EAD6B851FFC503C1FF65257CDCFB" box="[939,1151,229,254]" italics="true" pageId="14" pageNumber="15">P. pseudabundans</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName id="4C054D47B851FFC504D0FF652473DCFB" box="[1210,1392,229,254]" class="Bacillariophyceae" family="Naviculaceae" genus="Navicula" higherTaxonomySource="CoL" kingdom="Animalia" order="Naviculales" pageId="14" pageNumber="15" phylum="Ochrophyta" rank="species" species="clementoides">
|
||
<emphasis id="B971EAD6B851FFC504D0FF652473DCFB" box="[1210,1392,229,254]" italics="true" pageId="14" pageNumber="15">P. clementoides</emphasis>
|
||
</taxonomicName>
|
||
are found in the shape of the valve ends and size of the central area.
|
||
<taxonomicName id="4C054D47B851FFC503E2FE8C2466DD23" authority="Metzeltin et al. (2005" authorityName="Metzeltin" authorityYear="2005" box="[904,1381,268,294]" class="Bacillariophyceae" family="Cymbellaceae" genus="Placoneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="14" pageNumber="15" phylum="Bacillariophyta" rank="species" species="gracilis">
|
||
<emphasis id="B971EAD6B851FFC503E2FE8C255FDD20" box="[904,1116,268,293]" italics="true" pageId="14" pageNumber="15">Placoneis gracilis</emphasis>
|
||
<bibRefCitation id="EF944B35B851FFC5040EFE8C2466DD23" author="Metzeltin, D. & Lange-Bertalot, H. & Garcia-Rodriguez, F." box="[1124,1381,268,294]" pageId="14" pageNumber="15" refId="ref20906" refString="Metzeltin, D., Lange-Bertalot, H. & Garcia-Rodriguez, F. (2005) Diatoms of Uruguay. Compared with other taxa from South America and elsewhere. Iconographia Diatomologica 15. Rugell, A. R. G. Gantner Verlag, 736 pp." type="book" year="2005">
|
||
Metzeltin
|
||
<emphasis id="B971EAD6B851FFC504B1FE8C2416DD20" box="[1243,1301,268,293]" italics="true" pageId="14" pageNumber="15">et al.</emphasis>
|
||
(2005
|
||
</bibRefCitation>
|
||
</taxonomicName>
|
||
: figs 15–17) has a similar valve outline to
|
||
<taxonomicName id="4C054D47B851FFC50220FEB2221EDD4E" authorityName="Levkov" authorityYear="2011" box="[586,797,306,332]" class="Bacillariophyceae" family="Cymbellaceae" genus="Placoneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="14" pageNumber="15" phylum="Bacillariophyta" rank="species" species="pseudabundans">
|
||
<emphasis id="B971EAD6B851FFC50220FEB2235BDD4E" box="[586,600,306,331]" italics="true" pageId="14" pageNumber="15">P</emphasis>
|
||
.
|
||
<emphasis id="B971EAD6B851FFC5020DFEB2221EDD4E" box="[615,797,306,331]" italics="true" pageId="14" pageNumber="15">pseudabundans</emphasis>
|
||
</taxonomicName>
|
||
, but lacks stigmata in the central area.
|
||
</paragraph>
|
||
<caption id="DF7A664CB851FFC500FDF90720FADAEC" ID-DOI="http://doi.org/10.5281/zenodo.4894418" ID-Zenodo-Dep="4894418" httpUri="https://zenodo.org/record/4894418/files/figure.png" pageId="14" pageNumber="15" startId="14.[151,269,1671,1695]" targetBox="[352,1234,387,1647]" targetPageId="14">
|
||
<paragraph id="8BBA36C4B851FFC500FDF90720FADAEC" blockId="14.[151,1436,1671,1769]" pageId="14" pageNumber="15">
|
||
<emphasis id="B971EAD6B851FFC500FDF907206EDA9A" bold="true" box="[151,365,1671,1695]" pageId="14" pageNumber="15">FIGURES 90–107:</emphasis>
|
||
LM micrographs. Figs 90, 91.
|
||
<taxonomicName id="4C054D47B851FFC502D7F9082291DA9A" authorityName="Cox" authorityYear="1988" baseAuthorityName="Grunow" box="[701,914,1672,1695]" class="Bacillariophyceae" family="Cymbellaceae" genus="Placoneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="14" pageNumber="15" phylum="Bacillariophyta" rank="species" species="clementis">
|
||
<emphasis id="B971EAD6B851FFC502D7F9082291DA9A" box="[701,914,1672,1695]" italics="true" pageId="14" pageNumber="15">Placoneis clementis</emphasis>
|
||
</taxonomicName>
|
||
. Figs 92–95.
|
||
<taxonomicName id="4C054D47B851FFC5044FF908243FDA9A" authorityName="Levkov" authorityYear="2011" box="[1061,1340,1672,1695]" class="Bacillariophyceae" family="Cymbellaceae" genus="Placoneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="14" pageNumber="15" phylum="Bacillariophyta" rank="species" species="pseudabundans">
|
||
<emphasis id="B971EAD6B851FFC5044FF908243FDA9A" box="[1061,1340,1672,1695]" italics="true" pageId="14" pageNumber="15">Placoneis pseudabundans</emphasis>
|
||
</taxonomicName>
|
||
. Fig. 96.
|
||
<taxonomicName id="4C054D47B851FFC500FDF92C204FDAC6" authorityName="Miho & Lange-Bertalot" authorityYear="2006" box="[151,332,1708,1731]" class="Bacillariophyceae" family="Cymbellaceae" genus="Placoneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="14" pageNumber="15" phylum="Bacillariophyta" rank="species" species="juriljii">
|
||
<emphasis id="B971EAD6B851FFC500FDF92C204FDAC6" box="[151,332,1708,1731]" italics="true" pageId="14" pageNumber="15">Placoneis juriljii</emphasis>
|
||
</taxonomicName>
|
||
. Figs 97–107.
|
||
<emphasis id="B971EAD6B851FFC50184F92C23DEDAC6" box="[494,733,1708,1731]" italics="true" pageId="14" pageNumber="15">
|
||
<taxonomicName id="4C054D47B851FFC50184F92C23DADAC6" authorityName="Levkov" authorityYear="2011" box="[494,729,1708,1731]" class="Bacillariophyceae" family="Cymbellaceae" genus="Placoneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="14" pageNumber="15" phylum="Bacillariophyta" rank="species" species="subelegans">Placoneis subelegans</taxonomicName>
|
||
.
|
||
</emphasis>
|
||
Scale bar = 10 µm. Figs 90, 91, fossil deposit Köpecz, Romania, Figs 92–107. Lake Ohrid, recent.
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph id="8BBA36C4B851FFC400ACF89D254CDCFA" blockId="14.[151,1436,1821,2002]" lastBlockId="15.[151,1436,152,796]" lastPageId="15" lastPageNumber="16" pageId="14" pageNumber="15">
|
||
In Lake
|
||
<collectingRegion id="49C1F826B851FFC50142F89D206FDB32" box="[296,364,1821,1847]" country="Macedonia" name="Ohrid" pageId="14" pageNumber="15">Ohrid</collectingRegion>
|
||
there are several
|
||
<taxonomicName id="4C054D47B851FFC50250F89D2209DB32" box="[570,778,1821,1847]" class="Bacillariophyceae" family="Cymbellaceae" genus="Placoneis" kingdom="Chromista" order="Cymbellales" pageId="14" pageNumber="15" phylum="Bacillariophyta" rank="species" species="undetermined">
|
||
<emphasis id="B971EAD6B851FFC50250F89D23AEDB33" box="[570,685,1821,1846]" italics="true" pageId="14" pageNumber="15">Placoneis</emphasis>
|
||
species
|
||
</taxonomicName>
|
||
groups. In species belonging to the
|
||
<taxonomicName id="4C054D47B851FFC504DBF89D244ADB33" box="[1201,1353,1821,1846]" class="Bacillariophyceae" family="Cymbellaceae" genus="Placoneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="14" pageNumber="15" phylum="Bacillariophyta" rank="species" species="placentula">
|
||
<emphasis id="B971EAD6B851FFC504DBF89D244ADB33" box="[1201,1353,1821,1846]" italics="true" pageId="14" pageNumber="15">P. placentula</emphasis>
|
||
</taxonomicName>
|
||
group, stigmata are absent, while species similar to
|
||
<taxonomicName id="4C054D47B851FFC502C4F8C4221DDB58" authorityName="Levkov" authorityYear="2011" box="[686,798,1860,1885]" class="Bacillariophyceae" family="Stauroneidaceae" genus="Prestauroneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="14" pageNumber="15" phylum="Bacillariophyta" rank="species" species="tumida">
|
||
<emphasis id="B971EAD6B851FFC502C4F8C4221DDB58" box="[686,798,1860,1885]" italics="true" pageId="14" pageNumber="15">P. tumida</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName id="4C054D47B851FFC50330F8C425B7DB5B" authority="Lange-Bertalot" authorityName="Lange-Bertalot" authorityYear="2005" box="[858,1204,1860,1886]" class="Bacillariophyceae" family="Cymbellaceae" genus="Placoneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="14" pageNumber="15" phylum="Bacillariophyta" rank="species" species="significans">
|
||
<emphasis id="B971EAD6B851FFC50330F8C422FBDB58" box="[858,1016,1860,1885]" italics="true" pageId="14" pageNumber="15">P. significans</emphasis>
|
||
Lange-Bertalot
|
||
</taxonomicName>
|
||
(in
|
||
<bibRefCitation id="EF944B35B851FFC5048CF8C421D7DB81" author="Metzeltin, D. & Lange-Bertalot, H. & Garcia-Rodriguez, F." pageId="14" pageNumber="15" refId="ref20906" refString="Metzeltin, D., Lange-Bertalot, H. & Garcia-Rodriguez, F. (2005) Diatoms of Uruguay. Compared with other taxa from South America and elsewhere. Iconographia Diatomologica 15. Rugell, A. R. G. Gantner Verlag, 736 pp." type="book" year="2005">
|
||
Metzeltin
|
||
<emphasis id="B971EAD6B851FFC5050AF8C42497DB58" box="[1376,1428,1860,1885]" italics="true" pageId="14" pageNumber="15">et al</emphasis>
|
||
. 2005
|
||
</bibRefCitation>
|
||
) (=
|
||
<taxonomicName id="4C054D47B851FFC50162F8EB237BDB81" authority="Hustedt" authorityName="Hustedt" authorityYear="1944" box="[264,632,1898,1924]" class="Bacillariophyceae" family="Naviculaceae" genus="Navicula" higherTaxonomySource="CoL" kingdom="Animalia" order="Naviculales" pageId="14" pageNumber="15" phylum="Ochrophyta" rank="variety" species="exigua" variety="signata">
|
||
<emphasis id="B971EAD6B851FFC50162F8EB2078DB81" box="[264,379,1899,1924]" italics="true" pageId="14" pageNumber="15">N. exigua</emphasis>
|
||
var.
|
||
<emphasis id="B971EAD6B851FFC501D3F8EB2312DB81" box="[441,529,1899,1924]" italics="true" pageId="14" pageNumber="15">signata</emphasis>
|
||
Hustedt
|
||
</taxonomicName>
|
||
) have a single, isolated stigma. So far, only two species present in Lake
|
||
<collectingRegion id="49C1F826B851FFC500B3F811201EDBAE" box="[217,285,1937,1963]" country="Macedonia" name="Ohrid" pageId="14" pageNumber="15">Ohrid</collectingRegion>
|
||
have two stigmata in the central area,
|
||
<taxonomicName id="4C054D47B851FFC5028FF8112418DBAE" authority="Miho & Lange-Bertalot (2006" authorityName="Miho & Lange-Bertalot" authorityYear="2006" box="[741,1307,1937,1963]" class="Bacillariophyceae" family="Cymbellaceae" genus="Placoneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="14" pageNumber="15" phylum="Bacillariophyta" rank="species" species="juriljii">
|
||
<emphasis id="B971EAD6B851FFC5028FF81122AFDBAF" box="[741,940,1937,1962]" italics="true" pageId="14" pageNumber="15">Placoneis juriljii</emphasis>
|
||
<bibRefCitation id="EF944B35B851FFC503DEF8112418DBAE" author="Miho, A. & Lange-Bertalot, H." box="[948,1307,1937,1963]" pageId="14" pageNumber="15" pagination="301 - 313" refId="ref20955" refString="Miho, A. & Lange-Bertalot, H. (2006) Diversity of the genus Placoneis in Lake Ohrid and other freshwater habitats in Albania. In: Witkowski, A. (Ed.), Proceedings of the 18 th International Diatom Symposium. Bristol: Biopress Limited, pp. 301 - 313." type="book chapter" year="2006">Miho & Lange-Bertalot (2006</bibRefCitation>
|
||
</taxonomicName>
|
||
: figs 1–11, 27–35) and
|
||
<taxonomicName id="4C054D47B851FFC50143F8382205DBD7" authority="(Grunow) Cox (1987: 155" authorityName="Cox" authorityYear="1987" baseAuthorityName="Grunow" box="[297,774,1976,2002]" class="Bacillariophyceae" family="Cymbellaceae" genus="Placoneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="14" pageNumber="15" phylum="Bacillariophyta" rank="species" species="clementis">
|
||
<emphasis id="B971EAD6B851FFC50143F83820B9DBD4" box="[297,442,1976,2001]" italics="true" pageId="14" pageNumber="15">P. clementis</emphasis>
|
||
(Grunow)
|
||
<bibRefCitation id="EF944B35B851FFC50229F8382205DBD7" author="Cox, E. J." box="[579,774,1976,2002]" pageId="14" pageNumber="15" pagination="145 - 157" refId="ref18381" refString="Cox, E. J. (1987) Placoneis Mereschkowsky: the re-evaluation of a diatom genus originally characterized by its chloroplast type. Diatom Research 2: 145 - 157." type="journal article" year="1987">Cox (1987: 155</bibRefCitation>
|
||
</taxonomicName>
|
||
; figs 28–33). Valves of
|
||
<taxonomicName id="4C054D47B851FFC50446F83825F9DBD4" authorityName="Miho & Lange-Bertalot" authorityYear="2006" box="[1068,1274,1976,2001]" class="Bacillariophyceae" family="Cymbellaceae" genus="Placoneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="14" pageNumber="15" phylum="Bacillariophyta" rank="species" species="juriljii">
|
||
<emphasis id="B971EAD6B851FFC50446F83825F9DBD4" box="[1068,1274,1976,2001]" italics="true" pageId="14" pageNumber="15">Placoneis juriljii</emphasis>
|
||
</taxonomicName>
|
||
(
|
||
<figureCitation id="133E2A41B851FFC50566F8382465DBD7" box="[1292,1382,1976,2002]" captionStart="FIGURES 90–107" captionStartId="14.[151,269,1671,1695]" captionTargetBox="[352,1234,387,1647]" captionTargetId="figure-235@14.[352,1234,387,1647]" captionTargetPageId="14" captionText="FIGURES 90–107: LM micrographs. Figs 90, 91. Placoneis clementis. Figs 92–95. Placoneis pseudabundans. Fig. 96. Placoneis juriljii. Figs 97–107. Placoneis subelegans. Scale bar = 10 µm. Figs 90, 91, fossil deposit Köpecz, Romania, Figs 92–107. Lake Ohrid, recent." figureDoi="http://doi.org/10.5281/zenodo.4894418" httpUri="https://zenodo.org/record/4894418/files/figure.png" pageId="14" pageNumber="15">Fig. 96</figureCitation>
|
||
) are broadly lanceolate with short, protracted, broadly rounded to truncate ends, length
|
||
<quantity id="4CFD9B21B850FFC40430FF1825D1DCB7" box="[1114,1234,152,178]" metricMagnitude="-2" metricUnit="m" metricValue="5.65" metricValueMax="7.3" metricValueMin="4.0" pageId="15" pageNumber="16" unit="mm" value="56.5" valueMax="73.0" valueMin="40.0">40–73 µm</quantity>
|
||
and width
|
||
<quantity id="4CFD9B21B850FFC40538FF1821C3DCDD" metricMagnitude="-2" metricUnit="m" metricValue="1.8" metricValueMax="2.0" metricValueMin="1.6" pageId="15" pageNumber="16" unit="mm" value="18.0" valueMax="20.0" valueMin="16.0">16–20 µm</quantity>
|
||
;
|
||
<taxonomicName id="4C054D47B850FFC400A4FF3F2058DCDD" authorityName="Cox" authorityYear="1987" baseAuthorityName="Grunow" box="[206,347,191,216]" class="Bacillariophyceae" family="Cymbellaceae" genus="Placoneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="15" pageNumber="16" phylum="Bacillariophyta" rank="species" species="clementis">
|
||
<emphasis id="B971EAD6B850FFC400A4FF3F2058DCDD" box="[206,347,191,216]" italics="true" pageId="15" pageNumber="16">P. clementis</emphasis>
|
||
</taxonomicName>
|
||
(
|
||
<bibRefCitation id="EF944B35B850FFC40100FF3E234CDCDD" author="Levkov, Z. & Krstic, S. & Metzeltin, D. & Nakov, T." box="[362,591,190,216]" pageId="15" pageNumber="16" refId="ref20659" refString="Levkov, Z., Krstic, S., Metzeltin, D. & Nakov, T. (2007) Diatoms of Lakes Prespa and Ohrid (Macedonia). Iconographia Diatomologica 16. Rugell, A. R. G. Gantner Verlag, 603 pp." type="book" year="2007">
|
||
Levkov
|
||
<emphasis id="B971EAD6B850FFC401A7FF3F230ADCDD" box="[461,521,191,216]" italics="true" pageId="15" pageNumber="16">et al.</emphasis>
|
||
2007
|
||
</bibRefCitation>
|
||
: figs 89: 8–12,
|
||
<bibRefCitation id="EF944B35B850FFC4036CFF3E2567DCDD" author="Miho, A. & Lange-Bertalot, H." box="[774,1124,190,216]" pageId="15" pageNumber="16" pagination="301 - 313" refId="ref20955" refString="Miho, A. & Lange-Bertalot, H. (2006) Diversity of the genus Placoneis in Lake Ohrid and other freshwater habitats in Albania. In: Witkowski, A. (Ed.), Proceedings of the 18 th International Diatom Symposium. Bristol: Biopress Limited, pp. 301 - 313." type="book chapter" year="2006">Miho & Lange-Bertalot 2006</bibRefCitation>
|
||
: fig. 63), while being very similar to
|
||
<taxonomicName id="4C054D47B850FFC40167FF6520E2DCFB" authorityName="Levkov" authorityYear="2011" box="[269,481,229,254]" class="Bacillariophyceae" family="Cymbellaceae" genus="Placoneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="15" pageNumber="16" phylum="Bacillariophyta" rank="species" species="pseudabundans">
|
||
<emphasis id="B971EAD6B850FFC40167FF6520E2DCFB" box="[269,481,229,254]" italics="true" pageId="15" pageNumber="16">P. pseudabundans</emphasis>
|
||
</taxonomicName>
|
||
, can be differentiated by the shape of the valve ends.
|
||
</paragraph>
|
||
<paragraph id="8BBA36C4B850FFC400ACFE8C20CDDF19" blockId="15.[151,1436,152,796]" pageId="15" pageNumber="16">
|
||
According to current understanding, species in
|
||
<taxonomicName id="4C054D47B850FFC40360FE8C227EDD20" authorityName="Mereschkowsky" authorityYear="1903" box="[778,893,268,293]" class="Bacillariophyceae" family="Cymbellaceae" genus="Placoneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="15" pageNumber="16" phylum="Bacillariophyta" rank="genus">
|
||
<emphasis id="B971EAD6B850FFC40360FE8C227EDD20" box="[778,893,268,293]" italics="true" pageId="15" pageNumber="16">Placoneis</emphasis>
|
||
</taxonomicName>
|
||
have highly variable valve morphology and associated ultrastructure: large differences in almost every ultrastructural feature can be noticed in different species. For example, the stigmata vary from none to one, two or four; the striae can be uniseriate, biseriate, or partly biseriate; the external distal raphe endings can be symmetrical or asymmetrical; the internal proximal raphe endings can be deflected, recurved, or hook-like; the external areolae openings can be surrounded by rims, or round, or elongate, or lineola-like; the internal areolae openings can be occluded, either entirely with vola-like occlusions or not occluded at all. These variations suggest that there may be several lineages that might best be named as subgenera. For example,
|
||
<bibRefCitation id="EF944B35B850FFC4029DFD9A2549DE31" author="Kociolek, J. P. & Thomas, E. W." box="[759,1098,538,564]" pageId="15" pageNumber="16" pagination="195 - 214" refId="ref19614" refString="Kociolek, J. P. & Thomas, E. W. (2010) Taxonomy and ultrastructure of five naviculoid diatoms (class Bacillariophyceae) from the Rocky Mountains of Colorado (USA), with the description of a new genus and four new species. Nova Hedwigia 90: 195 - 214." type="journal article" year="2010">Kociolek & Thomas (2010)</bibRefCitation>
|
||
recently described the new genus
|
||
<emphasis id="B971EAD6B850FFC40089FDC12056DE5F" box="[227,341,577,602]" italics="true" pageId="15" pageNumber="16">Rexlowea</emphasis>
|
||
Kociolek & Thomas based on their observations of North American populations of
|
||
<taxonomicName id="4C054D47B850FFC40558FDC120ACDE87" authority="Ehrenberg" authorityName="Ehrenberg" class="Bacillariophyceae" family="Naviculaceae" genus="Navicula" higherTaxonomySource="CoL" kingdom="Animalia" order="Naviculales" pageId="15" pageNumber="16" phylum="Ochrophyta" rank="species" species="navicularis">
|
||
<emphasis id="B971EAD6B850FFC40558FDC12027DE84" italics="true" pageId="15" pageNumber="16">Navicula navicularis</emphasis>
|
||
Ehrenberg
|
||
</taxonomicName>
|
||
[=
|
||
<taxonomicName id="4C054D47B850FFC401B4FDE82561DE87" authority="(Ehrenberg) Cox (2003: 71)" authorityName="Cox" authorityPageNumber="71" authorityYear="2003" baseAuthorityName="Ehrenberg" box="[478,1122,616,642]" class="Bacillariophyceae" family="Cymbellaceae" genus="Placoneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="15" pageNumber="16" phylum="Bacillariophyta" rank="species" species="navicularis">
|
||
<emphasis id="B971EAD6B850FFC401B4FDE823F2DE84" box="[478,753,616,641]" italics="true" pageId="15" pageNumber="16">Placoneis navicularis</emphasis>
|
||
(Ehrenberg)
|
||
<bibRefCitation id="EF944B35B850FFC403F1FDE82561DE87" author="Cox, E. J." box="[923,1122,616,642]" pageId="15" pageNumber="16" pagination="53 - 83" refId="ref18519" refString="Cox, E. J. (2003) Placoneis Mereschkowsky (Bacillariophyta) revisited: resolution of several typification and nomenclatural problems, including the generitype. Botanical Journal of the Linnean Society 141: 53 - 83." type="journal article" year="2003">Cox (2003: 71)</bibRefCitation>
|
||
</taxonomicName>
|
||
]. The genus
|
||
<emphasis id="B971EAD6B850FFC4056FFDE8247DDE84" box="[1285,1406,616,641]" italics="true" pageId="15" pageNumber="16">Rexlowea</emphasis>
|
||
is characterized by the presence of septa and pseudosepta, several isolated stigma–like structures around the central area and condensed pores at the poles. However, no information about chloroplast features (number, shape, position) was given and comparison with species of
|
||
<taxonomicName id="4C054D47B850FFC4030AFD5C22D6DEF0" authorityName="Mereschkowsky" authorityYear="1903" box="[864,981,732,757]" class="Bacillariophyceae" family="Cymbellaceae" genus="Placoneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="15" pageNumber="16" phylum="Bacillariophyta" rank="genus">
|
||
<emphasis id="B971EAD6B850FFC4030AFD5C22D6DEF0" box="[864,981,732,757]" italics="true" pageId="15" pageNumber="16">Placoneis</emphasis>
|
||
</taxonomicName>
|
||
, and other naviculoid and cymbelloid genera, is not yet possible.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |