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<document id="74F56EC05D40AA03D4EC8722C6888D81" ID-DOI="10.11646/phytotaxa.184.4.1" ID-ISSN="1179-3163" ID-Zenodo-Dep="5146714" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" checkinTime="1627598084415" checkinUser="felipe" docAuthor="Cvetkoska, Aleksandra, Levkov, Zlatko, Hamilton, Paul B. &amp; Potapova, Marina" docDate="2014" docId="8A5C9F1CA478FF841DA98B992547FDA4" docLanguage="en" docName="Phytotaxa.184.4.181-207.pdf" docOrigin="Phytotaxa 184 (4)" docSource="http://dx.doi.org/10.11646/phytotaxa.184.4.1" docStyle="DocumentStyle:96748F8F1B6C902996E134952A3A36B9.7:Phytotaxa.2014-.journal_article" docStyleId="96748F8F1B6C902996E134952A3A36B9" docStyleName="Phytotaxa.2014-.journal_article" docStyleVersion="7" docTitle="Cavinula kernii Cvetkoska, Hamilton, Levkov &amp; Potapova 2014, sp. nov." docType="treatment" docVersion="3" lastPageNumber="203" masterDocId="7665E764A46CFF921D218F632070FFCC" masterDocTitle="The biogeographic distribution of Cavinula (Bacillariophyceae) in North America with the descriptions of two new species" masterLastPageNumber="207" masterPageNumber="181" pageNumber="201" updateTime="1699030299390" updateUser="plazi" zenodo-license-figures="UNSPECIFIED" zenodo-license-treatments="UNSPECIFIED">
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<mods:title id="3B915D6B6045B865A22B32A2E0711DFA">The biogeographic distribution of Cavinula (Bacillariophyceae) in North America with the descriptions of two new species</mods:title>
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<mods:namePart id="80539DC948B51721B1D883077469B683">Cvetkoska, Aleksandra</mods:namePart>
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<mods:namePart id="57FCE33971EBF657DF67134D333DC3D8">Levkov, Zlatko</mods:namePart>
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<mods:namePart id="E6445C3460D867767C0A5990112E5EB2">Hamilton, Paul B.</mods:namePart>
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<mods:namePart id="CADE1B8CE11F1D48425C2272DAACBAFD">Potapova, Marina</mods:namePart>
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<mods:title id="DB864AAAB72E9D08670C6578AE0E1807">Phytotaxa</mods:title>
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<mods:date id="7468F48B18CCC16FC594C8C42F831D80">2014</mods:date>
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<treatment id="8A5C9F1CA478FF841DA98B992547FDA4" ID-DOI="http://doi.org/10.5281/zenodo.5149499" ID-Zenodo-Dep="5149499" LSID="urn:lsid:plazi:treatment:8A5C9F1CA478FF841DA98B992547FDA4" httpUri="http://treatment.plazi.org/id/8A5C9F1CA478FF841DA98B992547FDA4" lastPageId="22" lastPageNumber="203" pageId="20" pageNumber="201">
<subSubSection id="4AEF7D81A478FF861DA98B992258F9FF" pageId="20" pageNumber="201" type="nomenclature">
<paragraph id="024A2E0AA478FF861DA98B992440FAD8" blockId="20.[136,1072,1274,1301]" box="[136,1072,1274,1301]" pageId="20" pageNumber="201">
<heading id="59029966A478FF861DA98B992440FAD8" box="[136,1072,1274,1301]" fontSize="11" level="2" pageId="20" pageNumber="201" reason="3">
<taxonomicName id="C5F55589A478FF861DA98B992352FAD9" authority="Cvetkoska, Hamilton, Levkov &amp; Potapova" authorityName="Cvetkoska, Hamilton, Levkov &amp; Potapova" authorityYear="2014" box="[136,802,1274,1301]" class="Bacillariophyceae" family="Cavinulaceae" genus="Cavinula" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="20" pageNumber="201" phylum="Bacillariophyta" rank="species" species="kernii" status="sp. nov.">
<emphasis id="3081F218A478FF861DA98B99214DFAD9" bold="true" box="[136,317,1274,1301]" italics="true" pageId="20" pageNumber="201">Cavinula kernii</emphasis>
Cvetkoska, Hamilton, Levkov &amp; Potapova
</taxonomicName>
<emphasis id="3081F218A478FF861E088B98230EFAD8" box="[809,894,1275,1300]" italics="true" pageId="20" pageNumber="201">
<taxonomicNameLabel id="2BB24F63A478FF861E088B98230EFAD8" box="[809,894,1275,1300]" pageId="20" pageNumber="201" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
(
<figureCitation id="9ACE328FA478FF861EAD8B99239DFAD8" box="[908,1005,1274,1300]" captionStart="FIGURES 181186" captionStartId="21.[136,243,1953,1975]" captionTargetBox="[189,1399,194,1929]" captionTargetId="figure-20@21.[189,1399,190,1929]" captionTargetPageId="21" captionText="FIGURES 181186. LM micrographs of Cavinula kernii Cvetkoska, Hamilton, Levkov &amp; Potapova sp. nov. Figs 187192. SEM micrographs of Cavinula kernii Cvetkoska, Hamilton, Levkov &amp; Potapova. Figs 187190. External valve view. Figs 191, 192. Internal valve view. Figs 181192. Kernville, California, USA. LM Scale bar: 10 µm in Figs 181186. SEM Scale bars: 5µm in Fig. 191; 2 µm in Figs 187190, 192. Fig. 185 = holotype." figureDoi="http://doi.org/10.5281/zenodo.5146738" httpUri="https://zenodo.org/record/5146738/files/figure.png" pageId="20" pageNumber="201">Figs 181</figureCitation>
192)
</heading>
</paragraph>
<paragraph id="024A2E0AA478FF861DA98A252258F9FF" blockId="20.[136,1453,1350,1696]" pageId="20" pageNumber="201">
Valves elliptic-lanceolate with rounded apices. Valve face flat, sharply bent (not gradually curved) at margin onto mantle. Valve length 1417 µm, width 78 µm with 2224 stria in 10 µm. Striae radiate throughout; short and long striae alternate around central area. Striae uniseriate, composed of fine, rounded to elliptic areolae,
<quantity id="C50D83EFA478FF861E0A8AED23F1FA68" box="[811,897,1422,1444]" metricMagnitude="-1" metricUnit="m" metricValue="6.984999999999999" metricValueMax="7.62" metricValueMin="6.35" pageId="20" pageNumber="201" unit="in" value="27.5" valueMax="30.0" valueMin="25.0">2530 in</quantity>
10 µm. Internally, areolae positioned between thickened costae and covered with hymenes. Axial area narrow, linear, transforming into a small rounded central area. Raphe linear, externally, proximal and the distal raphe features small pores; distal raphe endings do not extend onto valve mantle (i.e. terminate on the valve face). Internally, raphe positioned on elevated sternum; both, proximal and distal raphe fissures terminate with a helictoglossa. Copulae open, with one row of pores.
</paragraph>
</subSubSection>
<subSubSection id="4AEF7D81A478FF861DA989212164F96C" pageId="20" pageNumber="201" type="materials_examined">
<paragraph id="024A2E0AA478FF861DA989212164F96C" blockId="20.[136,1453,1350,1696]" pageId="20" pageNumber="201">
<emphasis id="3081F218A478FF861DA9892120B2F99B" bold="true" box="[136,194,1602,1623]" pageId="20" pageNumber="201">Type:</emphasis>
<materialsCitation id="B29D2457A478FF861DFA89212161F96C" accessionNumber="GC101724, GC 101724" collectingDate="1993-09-13" collectionCode="ANSP, GC" collectorName="B. L. Porter &amp; Accession No." country="United States of America" location="Kern River" municipality="Kernville" pageId="20" pageNumber="201" specimenCode="CANA 105729" specimenCount="3" stateProvince="California" typeStatus="holotype">
<collectingRegion id="C031E0E8A478FF861DFA8921211EF99B" box="[219,366,1602,1623]" country="United States of America" name="California" pageId="20" pageNumber="201">CALIFORNIA</collectingRegion>
,
<collectingCountry id="7AE26E9AA478FF861C5A892121DFF99B" box="[379,431,1602,1623]" name="United States of America" pageId="20" pageNumber="201">USA</collectingCountry>
:
<location id="072A78D1A478FF861C9A8921225BF994" LSID="urn:lsid:plazi:treatment:8A5C9F1CA478FF841DA98B992547FDA4:072A78D1A478FF861C9A8921225BF994" box="[443,555,1602,1624]" country="United States of America" municipality="Kernville" name="Kern River" pageId="20" pageNumber="201" stateProvince="California">Kern River</location>
,
<collectingMunicipality id="E22EB470A478FF861F19892122E5F994" box="[568,661,1602,1624]" pageId="20" pageNumber="201">Kernville</collectingMunicipality>
, collection date:
<date id="764B08CAA478FF861E608921247BF99B" box="[833,1035,1602,1624]" pageId="20" pageNumber="201" value="1993-09-13">
<collectingDate id="660FF122A478FF861E608921247BF99B" box="[833,1035,1602,1624]" pageId="20" pageNumber="201" value="1993-09-13">September 13, 1993</collectingDate>
</date>
, collected by
<collectorName id="AF004BDCA478FF8619B889212578F99B" box="[1177,1288,1602,1623]" pageId="20" pageNumber="201">B.L. Porter</collectorName>
(
<typeStatus id="DD4E90A8A478FF86183989212502F994" box="[1304,1394,1602,1624]" pageId="20" pageNumber="201" type="holotype">holotype</typeStatus>
! slide
<collectionCode id="64E4B6CFA478FF861D9C89052089F9B7" box="[189,249,1638,1659]" 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="20" pageNumber="201">ANSP</collectionCode>
<collectionCode id="64E4B6CFA478FF861C2189052152F9B0" box="[256,290,1638,1660]" country="0" name="Goucher College" pageId="20" pageNumber="201">GC</collectionCode>
101724b,
<typeStatus id="DD4E90A8A478FF861CA3890521ABF9B0" box="[386,475,1638,1660]" pageId="20" pageNumber="201" type="holotype">holotype</typeStatus>
! designated here,
<collectorName id="AF004BDCA478FF861FA489052362F9B7" box="[645,786,1638,1660]" pageId="20" pageNumber="201">Accession No.</collectorName>
<collectionCode id="64E4B6CFA478FF861E3789052322F9B7" box="[790,850,1638,1659]" 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="20" pageNumber="201">ANSP</collectionCode>
<collectionCode id="64E4B6CFA478FF861E788905230AF9B7" box="[857,890,1638,1659]" country="0" name="Goucher College" pageId="20" pageNumber="201">GC</collectionCode>
101724b,
<typeStatus id="DD4E90A8A478FF861EC089052445F9B0" box="[993,1077,1638,1660]" pageId="20" pageNumber="201" type="holotype">holotype</typeStatus>
specimen =
<figureCitation id="9ACE328FA478FF86199189052573F9B0" box="[1200,1283,1638,1660]" captionStart="FIGURES 181186" captionStartId="21.[136,243,1953,1975]" captionTargetBox="[189,1399,194,1929]" captionTargetId="figure-20@21.[189,1399,190,1929]" captionTargetPageId="21" captionText="FIGURES 181186. LM micrographs of Cavinula kernii Cvetkoska, Hamilton, Levkov &amp; Potapova sp. nov. Figs 187192. SEM micrographs of Cavinula kernii Cvetkoska, Hamilton, Levkov &amp; Potapova. Figs 187190. External valve view. Figs 191, 192. Internal valve view. Figs 181192. Kernville, California, USA. LM Scale bar: 10 µm in Figs 181186. SEM Scale bars: 5µm in Fig. 191; 2 µm in Figs 187190, 192. Fig. 185 = holotype." figureDoi="http://doi.org/10.5281/zenodo.5146738" httpUri="https://zenodo.org/record/5146738/files/figure.png" pageId="20" pageNumber="201">Fig. 185</figureCitation>
; isotypes:
<specimenCode id="52538671A478FF86184889052179F96C" collectionCode="CANA" pageId="20" pageNumber="201">CANA 105729</specimenCode>
)
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection id="4AEF7D81A478FF861DA989AD2465F924" box="[136,1045,1742,1769]" pageId="20" pageNumber="201" type="etymology">
<paragraph id="024A2E0AA478FF861DA989AD2465F924" blockId="20.[136,1452,1742,2057]" box="[136,1045,1742,1769]" pageId="20" pageNumber="201">
<emphasis id="3081F218A478FF861DA989AD215EF924" bold="true" box="[136,302,1742,1768]" pageId="20" pageNumber="201">Etymology:</emphasis>
The specific epithet (
<taxonomicName id="C5F55589A478FF861F3D89AD222DF924" box="[540,605,1742,1768]" class="Bacillariophyceae" family="Cavinulaceae" genus="Cavinula" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="20" pageNumber="201" phylum="Bacillariophyta" rank="species" species="kernii">
<emphasis id="3081F218A478FF861F3D89AD222DF924" box="[540,605,1742,1768]" italics="true" pageId="20" pageNumber="201">kernii</emphasis>
</taxonomicName>
) refers to the
<typeStatus id="DD4E90A8A478FF861FDB89AC235AF925" box="[762,810,1743,1769]" pageId="20" pageNumber="201">type</typeStatus>
locality, Kern River.
</paragraph>
</subSubSection>
<subSubSection id="4AEF7D81A478FF841D9C8991217CFDEC" lastPageId="22" lastPageNumber="203" pageId="20" pageNumber="201" type="diagnosis">
<paragraph id="024A2E0AA478FF861D9C899123ABF80C" blockId="20.[136,1452,1742,2057]" pageId="20" pageNumber="201">
<emphasis id="3081F218A478FF861D9C89912195F8C0" bold="true" box="[189,485,1778,1804]" pageId="20" pageNumber="201">Differential diagnosis:</emphasis>
<taxonomicName id="C5F55589A478FF861CC4899122E6F8C0" box="[485,662,1778,1804]" class="Bacillariophyceae" family="Cavinulaceae" genus="Cavinula" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="20" pageNumber="201" phylum="Bacillariophyta" rank="species" species="kernii">
<emphasis id="3081F218A478FF861CC4899122E6F8C0" box="[485,662,1778,1804]" italics="true" pageId="20" pageNumber="201">Cavinula kernii</emphasis>
</taxonomicName>
most resembles
<taxonomicName id="C5F55589A478FF861E7B89902438F8C0" authority="Hustedt" authorityName="Hustedt" box="[858,1096,1778,1805]" class="Bacillariophyceae" family="Cavinulaceae" genus="Cavinula" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="20" pageNumber="201" phylum="Bacillariophyta" rank="species" species="mollicula">
<emphasis id="3081F218A478FF861E7B8990231DF8C1" box="[858,877,1779,1805]" italics="true" pageId="20" pageNumber="201">C</emphasis>
.
<emphasis id="3081F218A478FF861E5F89912398F8C0" box="[894,1000,1778,1804]" italics="true" pageId="20" pageNumber="201">mollicula</emphasis>
Hustedt
</taxonomicName>
in valve outline and structural form (
<bibRefCitation id="666453FBA478FF861DF08875222DF8FC" author="Lange-Bertalot, H. &amp; Metzeltin, D." box="[209,605,1814,1840]" pageId="20" pageNumber="201" pagination="390" refId="ref15469" refString="Lange-Bertalot, H. &amp; Metzeltin, D. (1996) Indicators of oligotrophy, 800 taxa representative of three ecologically distinct lake types: Carbon buffered - oligodystrophic - weakly buffered soft water. Iconographia Diatomologica 2: 390." type="journal article" year="1996">Lange-Bertalot &amp; Metzeltin (1996</bibRefCitation>
, fig. 24: 1012, fig. 114: 5). There are minor differences in valve outline (more linear in
<taxonomicName id="C5F55589A478FF861C14885821E7F898" box="[309,407,1850,1877]" class="Bacillariophyceae" family="Cavinulaceae" genus="Cavinula" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="20" pageNumber="201" phylum="Bacillariophyta" rank="species" species="kernii">
<emphasis id="3081F218A478FF861C1488582138F899" box="[309,328,1851,1877]" italics="true" pageId="20" pageNumber="201">C</emphasis>
.
<emphasis id="3081F218A478FF861C77885921E7F898" box="[342,407,1850,1876]" italics="true" pageId="20" pageNumber="201">kernii</emphasis>
</taxonomicName>
), central area (more evident in
<taxonomicName id="C5F55589A478FF861FD988582329F898" box="[760,857,1850,1877]" class="Bacillariophyceae" family="Cavinulaceae" genus="Cavinula" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="20" pageNumber="201" phylum="Bacillariophyta" rank="species" species="kernii">
<emphasis id="3081F218A478FF861FD98858237BF899" box="[760,779,1851,1877]" italics="true" pageId="20" pageNumber="201">C</emphasis>
.
<emphasis id="3081F218A478FF861E3988592329F898" box="[792,857,1850,1876]" italics="true" pageId="20" pageNumber="201">kernii</emphasis>
</taxonomicName>
), and the absence of scattered areolae at the terminal nodule (scattered pores present in
<taxonomicName id="C5F55589A478FF861F23883C22FCF8B4" box="[514,652,1886,1913]" class="Bacillariophyceae" family="Cavinulaceae" genus="Cavinula" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="20" pageNumber="201" phylum="Bacillariophyta" rank="species" species="mollicula">
<emphasis id="3081F218A478FF861F23883C2265F8B5" box="[514,533,1887,1913]" italics="true" pageId="20" pageNumber="201">C</emphasis>
.
<emphasis id="3081F218A478FF861F03883D22FCF8B4" box="[546,652,1886,1912]" italics="true" pageId="20" pageNumber="201">mollicula</emphasis>
</taxonomicName>
). Lange-Bertalot also proposed that
<taxonomicName id="C5F55589A478FF861900883D2562F8B4" authority="Carter" authorityName="Carter" box="[1057,1298,1886,1912]" class="Bacillariophyceae" family="Naviculaceae" genus="Navicula" kingdom="Chromista" order="Naviculales" pageId="20" pageNumber="201" phylum="Ochrophyta" rank="species" species="orbis">
<emphasis id="3081F218A478FF861900883D24B6F8B4" box="[1057,1222,1886,1912]" italics="true" pageId="20" pageNumber="201">Navicula orbis</emphasis>
Carter
</taxonomicName>
and
<taxonomicName id="C5F55589A478FF861867883D21CFF850" authority="Hohn &amp; Hellerman" authorityName="Hohn &amp; Hellerman" class="Bacillariophyceae" family="Naviculaceae" genus="Navicula" kingdom="Chromista" order="Naviculales" pageId="20" pageNumber="201" phylum="Ochrophyta" rank="species" species="arenula">
<emphasis id="3081F218A478FF861867883D20AEF850" italics="true" pageId="20" pageNumber="201">Navicula arenula</emphasis>
Hohn &amp; Hellerman
</taxonomicName>
are synonymous with
<taxonomicName id="C5F55589A478FF861F9E88E0233BF850" box="[703,843,1922,1949]" class="Bacillariophyceae" family="Cavinulaceae" genus="Cavinula" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="20" pageNumber="201" phylum="Bacillariophyta" rank="species" species="mollicula">
<emphasis id="3081F218A478FF861F9E88E022A2F851" box="[703,722,1923,1949]" italics="true" pageId="20" pageNumber="201">C</emphasis>
.
<emphasis id="3081F218A478FF861FC088E1233BF850" box="[737,843,1922,1948]" italics="true" pageId="20" pageNumber="201">mollicula</emphasis>
</taxonomicName>
, which suggests that a number of similar taxa need to be considered in a more complete examination of this group of valve forms.
</paragraph>
<paragraph id="024A2E0AA478FF841D9C88A8217CFDEC" blockId="20.[136,1452,1742,2057]" lastBlockId="22.[136,1452,158,617]" lastPageId="22" lastPageNumber="203" pageId="20" pageNumber="201">
<taxonomicName id="C5F55589A478FF861D9C88A82270F828" box="[189,512,1994,2021]" class="Bacillariophyceae" family="Cavinulaceae" form="elliptica" genus="Cavinula" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="20" pageNumber="201" phylum="Bacillariophyta" rank="form" species="cocconeiformis">
<emphasis id="3081F218A478FF861D9C88A820A0F829" box="[189,208,1995,2021]" italics="true" pageId="20" pageNumber="201">C</emphasis>
.
<emphasis id="3081F218A478FF861DFC88A921F8F828" box="[221,392,1994,2020]" italics="true" pageId="20" pageNumber="201">cocconeiformis</emphasis>
f.
<emphasis id="3081F218A478FF861C8588A92270F828" box="[420,512,1994,2020]" italics="true" pageId="20" pageNumber="201">elliptica</emphasis>
</taxonomicName>
is also similar in valve shape and size.
<taxonomicName id="C5F55589A478FF861E8F88A8247FF828" box="[942,1039,1994,2021]" class="Bacillariophyceae" family="Cavinulaceae" genus="Cavinula" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="20" pageNumber="201" phylum="Bacillariophyta" rank="species" species="kernii">
<emphasis id="3081F218A478FF861E8F88A823B1F829" box="[942,961,1995,2021]" italics="true" pageId="20" pageNumber="201">C</emphasis>
.
<emphasis id="3081F218A478FF861EEF88A9247FF828" box="[974,1039,1994,2020]" italics="true" pageId="20" pageNumber="201">kernii</emphasis>
</taxonomicName>
is distinguished by the simple poroid (not deflected) terminal raphe fissure. In addition there is an isolated row (ca. 12 areolae) along the base of the mantle of
<taxonomicName id="C5F55589A47AFF841D888FFC217CFF74" box="[169,268,158,185]" class="Bacillariophyceae" family="Cavinulaceae" genus="Cavinula" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="22" pageNumber="203" phylum="Bacillariophyta" rank="species" species="kernii">
<emphasis id="3081F218A47AFF841D888FFC20CCFF75" box="[169,188,159,185]" italics="true" pageId="22" pageNumber="203">C</emphasis>
.
<emphasis id="3081F218A47AFF841DEA8FFD217CFF74" box="[203,268,158,184]" italics="true" pageId="22" pageNumber="203">kernii</emphasis>
</taxonomicName>
and no other areolae in the terminal area, in contrast to
<taxonomicName id="C5F55589A47AFF841EB88FFC2495FF74" box="[921,1253,158,185]" class="Bacillariophyceae" family="Cavinulaceae" form="elliptica" genus="Cavinula" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="22" pageNumber="203" phylum="Bacillariophyta" rank="form" species="cocconeiformis">
<emphasis id="3081F218A47AFF841EB88FFC23DCFF75" box="[921,940,159,185]" italics="true" pageId="22" pageNumber="203">C</emphasis>
.
<emphasis id="3081F218A47AFF841E9D8FFD2417FF74" box="[956,1127,158,184]" italics="true" pageId="22" pageNumber="203">cocconeiformis</emphasis>
f.
<emphasis id="3081F218A47AFF8419A88FFD2495FF74" box="[1161,1253,158,184]" italics="true" pageId="22" pageNumber="203">elliptica</emphasis>
</taxonomicName>
which has larger areolae along the base of the mantle that continue around the margin of the valve and there are additional areolae scattered in the terminal area. The significance of these differences between
<taxonomicName id="C5F55589A47AFF841EF58F842444FECC" box="[980,1076,230,257]" class="Bacillariophyceae" family="Cavinulaceae" genus="Cavinula" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="22" pageNumber="203" phylum="Bacillariophyta" rank="species" species="kernii">
<emphasis id="3081F218A47AFF841EF58F842397FECD" box="[980,999,231,257]" italics="true" pageId="22" pageNumber="203">C</emphasis>
.
<emphasis id="3081F218A47AFF841ED28F852444FECC" box="[1011,1076,230,256]" italics="true" pageId="22" pageNumber="203">kernii</emphasis>
</taxonomicName>
and
<taxonomicName id="C5F55589A47AFF8419488F8425DCFECC" box="[1129,1452,230,257]" class="Bacillariophyceae" family="Cavinulaceae" form="elliptica" genus="Cavinula" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="22" pageNumber="203" phylum="Bacillariophyta" rank="form" species="cocconeiformis">
<emphasis id="3081F218A47AFF8419488F84240CFECD" box="[1129,1148,231,257]" italics="true" pageId="22" pageNumber="203">C</emphasis>
.
<emphasis id="3081F218A47AFF8419A98F852543FECC" box="[1160,1331,230,256]" italics="true" pageId="22" pageNumber="203">cocconeiformis</emphasis>
f.
<emphasis id="3081F218A47AFF8418718F8525DCFECC" box="[1360,1452,230,256]" italics="true" pageId="22" pageNumber="203">elliptica</emphasis>
</taxonomicName>
need further investigation.
<taxonomicName id="C5F55589A47AFF841C9B8E68226DFEE8" box="[442,541,266,293]" class="Bacillariophyceae" family="Cavinulaceae" genus="Cavinula" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="22" pageNumber="203" phylum="Bacillariophyta" rank="species" species="kernii">
<emphasis id="3081F218A47AFF841C9B8E6821BDFEE9" box="[442,461,267,293]" italics="true" pageId="22" pageNumber="203">C</emphasis>
.
<emphasis id="3081F218A47AFF841CFD8E69226DFEE8" box="[476,541,266,292]" italics="true" pageId="22" pageNumber="203">kernii</emphasis>
</taxonomicName>
also resembles the smaller valves of
<taxonomicName id="C5F55589A47AFF841EE98E682438FEE8" box="[968,1096,266,293]" class="Bacillariophyceae" family="Cavinulaceae" genus="Cavinula" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="22" pageNumber="203" phylum="Bacillariophyta" rank="species" species="davisiae">
<emphasis id="3081F218A47AFF841EE98E6823ABFEE9" box="[968,987,267,293]" italics="true" pageId="22" pageNumber="203">C</emphasis>
.
<emphasis id="3081F218A47AFF841ECA8E692438FEE8" box="[1003,1096,266,292]" italics="true" pageId="22" pageNumber="203">davisiae</emphasis>
</taxonomicName>
but easily differentiated by the small (versus large round in
<taxonomicName id="C5F55589A47AFF841CE88E4C2237FE84" box="[457,583,302,329]" class="Bacillariophyceae" family="Cavinulaceae" genus="Cavinula" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="22" pageNumber="203" phylum="Bacillariophyta" rank="species" species="davisiae">
<emphasis id="3081F218A47AFF841CE88E4C21ACFE85" box="[457,476,303,329]" italics="true" pageId="22" pageNumber="203">C</emphasis>
.
<emphasis id="3081F218A47AFF841CCB8E4D2237FE84" box="[490,583,302,328]" italics="true" pageId="22" pageNumber="203">davisiae</emphasis>
</taxonomicName>
) central area, distal fissures not hooked (deflected in opposite direction in
<taxonomicName id="C5F55589A47AFF8418B38E4C2095FEA0" class="Bacillariophyceae" family="Cavinulaceae" genus="Cavinula" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="22" pageNumber="203" phylum="Bacillariophyta" rank="species" species="davisiae">
<emphasis id="3081F218A47AFF8418B38E4C25D5FE85" box="[1426,1445,303,329]" italics="true" pageId="22" pageNumber="203">C</emphasis>
.
<emphasis id="3081F218A47AFF841DA98E312095FEA0" box="[136,229,338,364]" italics="true" pageId="22" pageNumber="203">davisiae</emphasis>
</taxonomicName>
), sharp bend at the valve margin (versus more gently rounded in
<taxonomicName id="C5F55589A47AFF841EFD8E30242CFEA0" box="[988,1116,338,365]" class="Bacillariophyceae" family="Cavinulaceae" genus="Cavinula" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="22" pageNumber="203" phylum="Bacillariophyta" rank="species" species="davisiae">
<emphasis id="3081F218A47AFF841EFD8E30239FFEA1" box="[988,1007,339,365]" italics="true" pageId="22" pageNumber="203">C</emphasis>
.
<emphasis id="3081F218A47AFF841EDE8E31242CFEA0" box="[1023,1116,338,364]" italics="true" pageId="22" pageNumber="203">davisiae</emphasis>
</taxonomicName>
), and the lower stria density, (2224 versus
<quantity id="C50D83EFA47AFF841C0C8E1521E1FE5C" box="[301,401,374,400]" metricMagnitude="-1" metricUnit="m" metricValue="7.366" metricValueMax="8.128" metricValueMin="6.604" pageId="22" pageNumber="203" unit="in" value="29.0" valueMax="32.0" valueMin="26.0">2632 in</quantity>
10 µm in
<taxonomicName id="C5F55589A47AFF841F248E1422F3FE5C" box="[517,643,374,401]" class="Bacillariophyceae" family="Cavinulaceae" genus="Cavinula" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="22" pageNumber="203" phylum="Bacillariophyta" rank="species" species="davisiae">
<emphasis id="3081F218A47AFF841F248E142268FE5D" box="[517,536,375,401]" italics="true" pageId="22" pageNumber="203">C</emphasis>
.
<emphasis id="3081F218A47AFF841F078E1522F3FE5C" box="[550,643,374,400]" italics="true" pageId="22" pageNumber="203">davisiae</emphasis>
</taxonomicName>
). Another similar taxon is
<taxonomicName id="C5F55589A47AFF841E908E142500FE5C" authority="(Foged) Lange-Bertalot" authorityName="Lange-Bertalot" authorityYear="1996" baseAuthorityName="Foged" box="[945,1392,374,401]" class="Bacillariophyceae" family="Cavinulaceae" genus="Cavinula" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="22" pageNumber="203" phylum="Bacillariophyta" rank="species" species="thoroddsenii">
<emphasis id="3081F218A47AFF841E908E14242FFE5C" box="[945,1119,374,401]" italics="true" pageId="22" pageNumber="203">C. thoroddsenii</emphasis>
(Foged) Lange-Bertalot
</taxonomicName>
(see:
<bibRefCitation id="666453FBA47AFF841DA98EF92169FE78" author="Foged, N." box="[136,281,410,436]" pageId="22" pageNumber="203" pagination="1 - 192" refId="ref14840" refString="Foged, N. (1974) Freshwater diatoms in Iceland. Bibliotheca Phycologica 15: 1 - 192." type="journal article" year="1974">Foged, 1974</bibRefCitation>
, fig. 17: 710).
<taxonomicName id="C5F55589A47AFF841CF48EF922F6FE78" box="[469,646,410,436]" class="Bacillariophyceae" family="Cavinulaceae" genus="Cavinula" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="22" pageNumber="203" phylum="Bacillariophyta" rank="species" species="kernii">
<emphasis id="3081F218A47AFF841CF48EF922F6FE78" box="[469,646,410,436]" italics="true" pageId="22" pageNumber="203">Cavinula kernii</emphasis>
</taxonomicName>
is differentiated by a smaller valve size (L=1931 µm, W=1113 µm in
<taxonomicName id="C5F55589A47AFF841D868EDC2126FE14" authorityName="Lange-Bertalot" authorityYear="1996" baseAuthorityName="Foged" box="[167,342,446,473]" class="Bacillariophyceae" family="Cavinulaceae" genus="Cavinula" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="22" pageNumber="203" phylum="Bacillariophyta" rank="species" species="thoroddsenii">
<emphasis id="3081F218A47AFF841D868EDC2126FE14" box="[167,342,446,473]" italics="true" pageId="22" pageNumber="203">C. thoroddsenii</emphasis>
</taxonomicName>
), and the small rounded central area versus apically elongated central area in
<taxonomicName id="C5F55589A47AFF8419F28EDC25F2FE14" authorityName="Lange-Bertalot" authorityYear="1996" baseAuthorityName="Foged" box="[1235,1410,446,473]" class="Bacillariophyceae" family="Cavinulaceae" genus="Cavinula" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="22" pageNumber="203" phylum="Bacillariophyta" rank="species" species="thoroddsenii">
<emphasis id="3081F218A47AFF8419F28EDC25F2FE14" box="[1235,1410,446,473]" italics="true" pageId="22" pageNumber="203">C. thoroddsenii</emphasis>
</taxonomicName>
.
<taxonomicName id="C5F55589A47AFF8418B38EDC209BFE30" class="Bacillariophyceae" family="Cavinulaceae" genus="Cavinula" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="22" pageNumber="203" phylum="Bacillariophyta" rank="species" species="hilliardii">
<emphasis id="3081F218A47AFF8418B38EDC209BFE30" italics="true" pageId="22" pageNumber="203">C. hilliardii</emphasis>
</taxonomicName>
(
<figureCitation id="9ACE328FA47AFF841DDB8E8121E5FE30" box="[250,405,482,508]" captionStart="FIGURES 101131" captionStartId="7.[136,243,1726,1748]" captionTargetBox="[189,1399,190,1702]" captionTargetId="figure-20@7.[189,1399,190,1702]" captionTargetPageId="7" captionText="FIGURES 101131. LM micrographs. Figs 101106. Cavinula scutelloides (W. Smith) Lange-Bertalot. Figs 107111. Cavinula scutiformis (Grunow ex A. Schmidt) Mann &amp; Stickle. Figs 112122. Cavinula hilliardii Manguin ex Kociolek &amp; Reviers. Figs 123,124. Cavinula variostriata (Krasske) Mann in Round, Crawford &amp; Mann. Figs 125, 126. Cavinula lapidosa (Krasske) Mann. Figs 127131. Cavinula pusio (Cleve) H. Lange-Bertalot in Werum &amp; Lange-Bertalot. Figs 103, 104. W. Smith, Omersby, 1853 (type slide). Figs 126, 128. BRM N14/87a (Krasske material near Hessen). Scale bar: 10 µm." figureDoi="http://doi.org/10.5281/zenodo.5146722" httpUri="https://zenodo.org/record/5146722/files/figure.png" pageId="22" pageNumber="203">Figs 112122</figureCitation>
) differs by the valve shape and the orientation of striae (for comparison also see
<bibRefCitation id="666453FBA47AFF84183E8E8125D6FE30" author="Foged, N." box="[1311,1446,482,508]" pageId="22" pageNumber="203" pagination="1 - 114" refId="ref14806" refString="Foged, N. (1971) Diatoms found in a bottom sediment sample from a small deep lake on the Northern Slope, Alaska. Nova Hedwigia 21: 1 - 114." type="journal article" year="1971">Foged 1971</bibRefCitation>
, fig. 14: 18).
</paragraph>
</subSubSection>
<caption id="568A7E82A479FF871DA988C2227CF7EF" ID-DOI="http://doi.org/10.5281/zenodo.5146738" ID-Zenodo-Dep="5146738" httpUri="https://zenodo.org/record/5146738/files/figure.png" pageId="21" pageNumber="202" startId="21.[136,243,1953,1975]" targetBox="[189,1399,194,1929]" targetPageId="21">
<paragraph id="024A2E0AA479FF871DA988C2227CF7EF" blockId="21.[136,1452,1953,2083]" pageId="21" pageNumber="202">
<emphasis id="3081F218A479FF871DA988C22127F87A" bold="true" box="[136,343,1953,1975]" pageId="21" pageNumber="202">FIGURES 181186.</emphasis>
LM micrographs of
<taxonomicName id="C5F55589A479FF871F1188C2240FF87B" authority="Cvetkoska, Hamilton, Levkov &amp; Potapova" authorityName="Cvetkoska, Hamilton, Levkov &amp; Potapova" authorityYear="2014" box="[560,1151,1953,1975]" class="Bacillariophyceae" family="Cavinulaceae" genus="Cavinula" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="21" pageNumber="202" phylum="Bacillariophyta" rank="species" species="kernii" status="sp. nov.">
<emphasis id="3081F218A479FF871F1188C222BBF87A" box="[560,715,1953,1974]" italics="true" pageId="21" pageNumber="202">Cavinula kernii</emphasis>
Cvetkoska, Hamilton, Levkov &amp; Potapova
</taxonomicName>
<taxonomicNameLabel id="2BB24F63A479FF8719AB88C124A9F87B" box="[1162,1241,1954,1975]" pageId="21" pageNumber="202" rank="species">sp. nov.</taxonomicNameLabel>
Figs 187192. SEM micrographs of
<taxonomicName id="C5F55589A479FF871C0288A62317F817" authority="Cvetkoska, Hamilton, Levkov &amp; Potapova." authorityName="Cvetkoska, Hamilton, Levkov &amp; Potapova." box="[291,871,1989,2011]" class="Bacillariophyceae" family="Cavinulaceae" genus="Cavinula" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="21" pageNumber="202" phylum="Bacillariophyta" rank="species" species="kernii">
<emphasis id="3081F218A479FF871C0288A621CAF816" box="[291,442,1989,2010]" italics="true" pageId="21" pageNumber="202">Cavinula kernii</emphasis>
Cvetkoska, Hamilton, Levkov &amp; Potapova.
</taxonomicName>
Figs 187190. External valve view. Figs 191, 192. Internal valve view. Figs 181192. Kernville, California, USA. LM Scale bar: 10 µm in Figs 181186. SEM Scale bars: 5µm in Fig. 191; 2 µm in Figs 187190, 192. Fig. 185 = holotype.
</paragraph>
</caption>
<subSubSection id="4AEF7D81A47AFF841D9C8D492547FDA4" pageId="22" pageNumber="203" type="distribution">
<paragraph id="024A2E0AA47AFF841D9C8D492547FDA4" blockId="22.[136,1452,158,617]" pageId="22" pageNumber="203">
<emphasis id="3081F218A47AFF841D9C8D492105FD88" bold="true" box="[189,373,554,580]" pageId="22" pageNumber="203">Distribution:—</emphasis>
So far, this taxon (sensu stricto) was only observed in the samples from the
<typeStatus id="DD4E90A8A47AFF8419F88D482579FD89" box="[1241,1289,555,581]" pageId="22" pageNumber="203">type</typeStatus>
locality, Kern River, Kernville,
<collectingRegion id="C031E0E8A47AFF841C6A8D2D21CFFDA4" box="[331,447,590,616]" country="United States of America" name="California" pageId="22" pageNumber="203">California</collectingRegion>
,
<collectingCountry id="7AE26E9AA47AFF841CEB8D2D2276FDA4" box="[458,518,590,616]" name="United States of America" pageId="22" pageNumber="203">USA</collectingCountry>
. In
<date id="764B08CAA47AFF841F0E8D2D22EFFDA4" box="[559,671,590,616]" pageId="22" pageNumber="203" value="1992-07">July 1992</date>
, the pH was 8.4 with a specific conductance of 158 µS/cm.
</paragraph>
</subSubSection>
</treatment>
</document>