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<document id="A77423ADA5639C9D3D72B1FA378673EE" ID-DOI="10.11646/phytotaxa.349.1.5" ID-ISSN="1179-3163" IM.bibliography_approvedBy="felipe" IM.illustrations_approvedBy="felipe" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="GgImagineBatch" IM.taxonomicNames_approvedBy="felipe" IM.treatments_approvedBy="felipe" checkinTime="1725594201274" checkinUser="felipe" docAuthor="Bahls, Loren &amp; Luna, Tara" docDate="2018" docId="038F9D50FF915E4BFF38528AFE0F1248" docLanguage="en" docName="phytotaxa.349.1.5.pdf" docOrigin="Phytotaxa 349 (1)" docSource="http://dx.doi.org/10.11646/phytotaxa.349.1.5" docStyle="DocumentStyle:96748F8F1B6C902996E134952A3A36B9.13:Phytotaxa.2014-.journal_article" docStyleId="96748F8F1B6C902996E134952A3A36B9" docStyleName="Phytotaxa.2014-.journal_article" docStyleVersion="13" docTitle="Cymbopleura laszlorum Bahls &amp; Luna 2018, spec. nov." docType="treatment" docVersion="1" lastPageNumber="51" masterDocId="FFB6E528FF935E4FFFB05007FFC51325" masterDocTitle="Cymbopleura laszlorum spec. nov. (Cymbellaceae, Bacillariophyceae), a glacial relic from a calcium-rich floodplain fen in southwestern Montana, USA" masterLastPageNumber="53" masterPageNumber="47" pageNumber="49" updateTime="1725602949733" updateUser="GgImagineBatch" zenodo-license-figures="UNSPECIFIED" zenodo-license-treatments="UNSPECIFIED">
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<mods:title id="17862108CB91DB4D6F005158302E7F2E">Cymbopleura laszlorum spec. nov. (Cymbellaceae, Bacillariophyceae), a glacial relic from a calcium-rich floodplain fen in southwestern Montana, USA</mods:title>
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<mods:namePart id="2D2C344AEC495A6EC2C24358FFAF3C06">Bahls, Loren</mods:namePart>
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<mods:namePart id="360E1BDF2D0139A6F2D2ACE2B3C6C320">Luna, Tara</mods:namePart>
<mods:affiliation id="155A16A4BACA573A7FFFA8D2E20AF505">PO Box 447, East Glacier Park, Montana, USA 59434</mods:affiliation>
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<mods:date id="1112588BFEBF9B551826BCDB78EB4E11">2018</mods:date>
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<treatment id="038F9D50FF915E4BFF38528AFE0F1248" LSID="urn:lsid:plazi:treatment:038F9D50FF915E4BFF38528AFE0F1248" httpUri="http://treatment.plazi.org/id/038F9D50FF915E4BFF38528AFE0F1248" lastPageId="4" lastPageNumber="51" pageId="2" pageNumber="49">
<subSubSection id="C33C7FCDFF915E4DFF38528AFB4A10C0" pageId="2" pageNumber="49" type="nomenclature">
<paragraph id="8B992C46FF915E4DFF38528AFCBB118D" blockId="2.[136,894,653,680]" box="[136,894,653,680]" pageId="2" pageNumber="49">
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<taxonomicName id="4C2657C5FF915E4DFF38528AFD84118D" authority="Bahls &amp; Luna" authorityName="Bahls &amp; Luna" authorityYear="2018" box="[136,577,653,680]" class="Bacillariophyceae" family="Cymbellaceae" genus="Cymbopleura" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="2" pageNumber="49" phylum="Bacillariophyta" rank="species" species="laszlorum" status="sp. nov.">
<emphasis id="B952F054FF915E4DFF38528AFE58118D" bold="true" box="[136,413,653,680]" italics="true" pageId="2" pageNumber="49">Cymbopleura laszlorum</emphasis>
Bahls &amp; Luna
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<emphasis id="B952F054FF915E4DFDF75288FD70118D" box="[583,693,655,680]" italics="true" pageId="2" pageNumber="49">
<taxonomicNameLabel id="A2614D2FFF915E4DFDF75288FD70118D" box="[583,693,655,680]" pageId="2" pageNumber="49" rank="species">spec. nov.</taxonomicNameLabel>
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<figureCitation id="131D30C3FF915E4DFD0B5288FCE8118D" box="[699,813,655,680]" captionStart="FIGURES 3–23" captionStartId="3.[136,243,1866,1887]" captionTargetBox="[249,1334,179,1836]" captionTargetId="figure-14@3.[236,1352,175,1844]" captionTargetPageId="3" captionText="FIGURES 3–23. Transapically symmetric species of Cymbopleura with central fasciae and closely-spaced striae. 3–12. Cymbopleura laszlorum spec. nov. 3–9. Specimens from the type locality. Holotype specimen is in Fig. 5. 10–12. Specimens from the paratype locality. 13–19. Cymbopleura stauroneiformis. 13–15, 18, 19. Various tundra locations along the Back, Coppermine and Hood River corridors, Nunavut, Canada. 16, 17. Wet grassy meadow near Granite Gorge, Clearwater River, northern Saskatchewan, Canada. 20. Cymbopleura geofriedana from September Mountains Lake, Coppermine River corridor, Nunavut, Canada. 21. Cymbopleura sp. “Kasachstan” (Krammer 2003: 87, pl. 98, fig. 24). Photo by H. Lange-Bertalot. 22. Cymbopleura sp. “Messikommer” (Krammer 2003: 87, pl. 98, fig. 23). 23. Cymbopleura tynnii from wet hummocks near the Baillie River, Nunavut, Canada. Scale bars = 10 μm." pageId="2" pageNumber="49">Figs 3–12</figureCitation>
,
<figureCitation id="131D30C3FF915E4DFC895288FCBB118D" box="[825,894,655,680]" captionStart="FIGURES 24–29" captionStartId="4.[136,243,1381,1402]" captionTargetBox="[155,1436,391,1356]" captionTargetId="figure-88@4.[151,1436,389,1359]" captionTargetPageId="4" captionText="FIGURES 24–29. SEM images of Cymbopleura laszlorum spec. nov. 24–26. External valve views. 27–29. Internal valve views. Scale bars: 24, 27 = 5 μm; 25, 26, 28, 29 = 1 μm." pageId="2" pageNumber="49">24–29</figureCitation>
</heading>
</paragraph>
<paragraph id="8B992C46FF915E4DFF3852D7FB4A10C0" blockId="2.[136,1453,720,2077]" pageId="2" pageNumber="49">
Valves are elliptic-lanceolate with convex margins and rostrate to subrostrate apices. Length 41–54 μm; width 9.7–11.4 μm. Valves are symmetric with respect to both the apical and transapical axes. The axial area is about three times the width of the raphe and widens gradually towards the central area. The central area is moderately large and variable in shape, most often transversely elliptic to rectangular, sometimes shaped like a bow tie. The raphe is lateral, narrowing towards the ends. Proximal raphe ends are deflected gently towards the ventral margin and tipped with slightly inflated pores. Terminal raphe fissures are hook-shaped and concave towards the dorsal margin. Striae are uniseriate and radiate throughout,
<quantity id="4CDE81A3FF915E4DFED253AFFE5F10E4" box="[354,410,936,961]" metricMagnitude="-1" metricUnit="m" metricValue="3.556" pageId="2" pageNumber="49" unit="in" value="14.0">14 in</quantity>
10 μm at the valve center, up to
<quantity id="4CDE81A3FF915E4DFCB053AFFCFD10E4" box="[768,824,936,961]" metricMagnitude="-1" metricUnit="m" metricValue="5.588" pageId="2" pageNumber="49" unit="in" value="22.0">22 in</quantity>
10 μm at the apices. Areolae are also variable in density,
<quantity id="4CDE81A3FF915E4DFF3853CBFF0410C0" box="[136,193,972,997]" metricMagnitude="-1" metricUnit="m" metricValue="5.08" pageId="2" pageNumber="49" unit="in" value="20.0">20 in</quantity>
10 μm in striae at the valve center, up to
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10 μm at the apices. [n =
<specimenCount id="9D20E7CFFF915E4DFC5F53CBFB4F10C0" box="[1007,1162,972,997]" count="26" pageId="2" pageNumber="49" type="generic">26 specimens</specimenCount>
]
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<subSubSection id="C33C7FCDFF915E4BFF0D53F7FE0F1248" lastPageId="4" lastPageNumber="51" pageId="2" pageNumber="49" type="description">
<paragraph id="8B992C46FF915E4DFF0D53F7FE0C1620" blockId="2.[136,1453,720,2077]" pageId="2" pageNumber="49">
SEM:—In external valve view, areolae are simple and transapically oblong (
<figureCitation id="131D30C3FF915E4DFC4D53F7FBBE172C" box="[1021,1147,1008,1033]" captionStart="FIGURES 24–29" captionStartId="4.[136,243,1381,1402]" captionTargetBox="[155,1436,391,1356]" captionTargetId="figure-88@4.[151,1436,389,1359]" captionTargetPageId="4" captionText="FIGURES 24–29. SEM images of Cymbopleura laszlorum spec. nov. 24–26. External valve views. 27–29. Internal valve views. Scale bars: 24, 27 = 5 μm; 25, 26, 28, 29 = 1 μm." pageId="2" pageNumber="49">Figs 25, 26</figureCitation>
). Occlusions and secondary structures (e.g., vimines) are absent. Striae continue around the valve apices (
<figureCitation id="131D30C3FF915E4DFC4B5413FB951708" box="[1019,1104,1044,1069]" captionStart="FIGURES 24–29" captionStartId="4.[136,243,1381,1402]" captionTargetBox="[155,1436,391,1356]" captionTargetId="figure-88@4.[151,1436,389,1359]" captionTargetPageId="4" captionText="FIGURES 24–29. SEM images of Cymbopleura laszlorum spec. nov. 24–26. External valve views. 27–29. Internal valve views. Scale bars: 24, 27 = 5 μm; 25, 26, 28, 29 = 1 μm." pageId="2" pageNumber="49">Fig. 26</figureCitation>
); apical pore fields are absent. Costae between striae are wide relative to the striae themselves. External raphe fissures are narrow, becoming much wider at the terminal fissures (
<figureCitation id="131D30C3FF915E4DFE6A545BFDEB1750" box="[474,558,1116,1141]" captionStart="FIGURES 24–29" captionStartId="4.[136,243,1381,1402]" captionTargetBox="[155,1436,391,1356]" captionTargetId="figure-88@4.[151,1436,389,1359]" captionTargetPageId="4" captionText="FIGURES 24–29. SEM images of Cymbopleura laszlorum spec. nov. 24–26. External valve views. 27–29. Internal valve views. Scale bars: 24, 27 = 5 μm; 25, 26, 28, 29 = 1 μm." pageId="2" pageNumber="49">Fig. 26</figureCitation>
). Internally, areolae are arranged end-to-end in trough-like alveoli and separated by narrow intercostae (
<figureCitation id="131D30C3FF915E4DFE205487FDD217BC" box="[400,535,1152,1177]" captionStart="FIGURES 24–29" captionStartId="4.[136,243,1381,1402]" captionTargetBox="[155,1436,391,1356]" captionTargetId="figure-88@4.[151,1436,389,1359]" captionTargetPageId="4" captionText="FIGURES 24–29. SEM images of Cymbopleura laszlorum spec. nov. 24–26. External valve views. 27–29. Internal valve views. Scale bars: 24, 27 = 5 μm; 25, 26, 28, 29 = 1 μm." pageId="2" pageNumber="49">Figs 28, 29</figureCitation>
). Internal raphe fissures are wide, narrowing towards the terminal and proximal ends. Raphe branches terminate in simple helictoglossae (
<figureCitation id="131D30C3FF915E4DFCBE54A3FC551798" box="[782,912,1188,1213]" captionStart="FIGURES 24–29" captionStartId="4.[136,243,1381,1402]" captionTargetBox="[155,1436,391,1356]" captionTargetId="figure-88@4.[151,1436,389,1359]" captionTargetPageId="4" captionText="FIGURES 24–29. SEM images of Cymbopleura laszlorum spec. nov. 24–26. External valve views. 27–29. Internal valve views. Scale bars: 24, 27 = 5 μm; 25, 26, 28, 29 = 1 μm." pageId="2" pageNumber="49">Figs 27, 29</figureCitation>
). Proximal raphe ends are hooked and separated by a wide intermissio (
<figureCitation id="131D30C3FF915E4DFE3854CFFE1917C4" box="[392,476,1224,1249]" captionStart="FIGURES 24–29" captionStartId="4.[136,243,1381,1402]" captionTargetBox="[155,1436,391,1356]" captionTargetId="figure-88@4.[151,1436,389,1359]" captionTargetPageId="4" captionText="FIGURES 24–29. SEM images of Cymbopleura laszlorum spec. nov. 24–26. External valve views. 27–29. Internal valve views. Scale bars: 24, 27 = 5 μm; 25, 26, 28, 29 = 1 μm." pageId="2" pageNumber="49">Fig. 28</figureCitation>
). A flap of silica with a curved edge overlies the central nodule on one side and merges with it at its center (
<figureCitation id="131D30C3FF915E4DFED854EBFE791620" box="[360,444,1260,1285]" captionStart="FIGURES 24–29" captionStartId="4.[136,243,1381,1402]" captionTargetBox="[155,1436,391,1356]" captionTargetId="figure-88@4.[151,1436,389,1359]" captionTargetPageId="4" captionText="FIGURES 24–29. SEM images of Cymbopleura laszlorum spec. nov. 24–26. External valve views. 27–29. Internal valve views. Scale bars: 24, 27 = 5 μm; 25, 26, 28, 29 = 1 μm." pageId="2" pageNumber="49">Fig. 28</figureCitation>
).
</paragraph>
<paragraph id="8B992C46FF915E4DFF0D5517FB941668" blockId="2.[136,1453,720,2077]" pageId="2" pageNumber="49">
<materialsCitation id="3B4E261BFF915E4DFF0D5517FD2D1668" collectingDate="2017-07-24" collectionCode="MONTU" collectorName="Tara Luna &amp; Slide No." country="United States of America" elevation="1567" latitude="45.2743" location="East Fork O'Dell Creek" longLatPrecision="6" longitude="-111.275" pageId="2" pageNumber="49" specimenCount="1" stateProvince="Montana" typeStatus="holotype">
<typeStatus id="549D92E4FF915E4DFF0D5517FEEC160C" box="[189,297,1296,1321]" pageId="2" pageNumber="49" type="holotype">Holotype</typeStatus>
:—
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,
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:
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, fen pool no. 4,
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, -
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, coll.
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,
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49-69,
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!
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specimen is in
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.
</paragraph>
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<typeStatus id="549D92E4FF915E4DFF0D555FFED71654" box="[189,274,1368,1393]" pageId="2" pageNumber="49" type="isotype">Isotype</typeStatus>
:—Slide No. 136-34,
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Diatom Collection (MDC), Helena.
</paragraph>
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:—
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,
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: East Fork O’Dell Creek, fen pool no. 2,
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a.s.l.,
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<geoCoordinate id="EE124A81FF915E4DFB5F557BFA4616B0" box="[1263,1411,1404,1429]" degrees="111.7255" direction="west" orientation="longitude" pageId="2" pageNumber="49" precision="5" value="-111.7255">111.7255 °W</geoCoordinate>
,
<date id="FF980A86FF915E4DFA20557BFF33169C" pageId="2" pageNumber="49" value="2017-07-24">24 July 2017</date>
, coll. Tara Luna, Slide No. 49-67, MONTU!, Slide No. 136-32,
<collectingRegion id="49E2E2A4FF915E4DFC0355A7FBD0169C" box="[947,1045,1440,1465]" country="United States of America" name="Montana" pageId="2" pageNumber="49">Montana</collectingRegion>
Diatom Collection (MDC), Helena.
</paragraph>
<paragraph id="8B992C46FF915E4DFF0D55C3FD9B15FC" blockId="2.[136,1453,720,2077]" pageId="2" pageNumber="49">
Differential diagnosis:—The species most similar to
<taxonomicName id="4C2657C5FF915E4DFC8355C3FC0D16F8" authorityName="Bahls &amp; Luna" authorityYear="2018" box="[819,968,1476,1501]" class="Bacillariophyceae" family="Cymbellaceae" genus="Cymbopleura" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="2" pageNumber="49" phylum="Bacillariophyta" rank="species" species="laszlorum">
<emphasis id="B952F054FF915E4DFC8355C3FC0D16F8" box="[819,968,1476,1501]" italics="true" pageId="2" pageNumber="49">C. laszlorum</emphasis>
</taxonomicName>
in North America is
<taxonomicName id="4C2657C5FF915E4DFB6455C3FDC31524" authority="(Lagerstedt) Krammer (2003: 86)" authorityName="Krammer" authorityPageNumber="86" authorityYear="2003" baseAuthorityName="Lagerstedt" class="Bacillariophyceae" family="Cymbellaceae" genus="Cymbopleura" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="2" pageNumber="49" phylum="Bacillariophyta" rank="species" species="stauroneiformis">
<emphasis id="B952F054FF915E4DFB6455C3FA6E16F8" box="[1236,1451,1476,1501]" italics="true" pageId="2" pageNumber="49">C. stauroneiformis</emphasis>
(Lagerstedt)
<bibRefCitation id="EFB751B7FF915E4DFEA955EFFDC31524" author="Krammer, K." box="[281,518,1512,1537]" pageId="2" pageNumber="49" refId="ref3798" refString="Krammer, K. (2003) Cymbopleura, Delicata, Navicymbula, Gomphocymbellopsis, Afrocymbella. Diatoms of Europe, Volume 4. A. R. G. Gantner Verlag K. G., Ruggell, 530 pp." type="book" year="2003">Krammer (2003: 86)</bibRefCitation>
</taxonomicName>
, an Arctic species described from Spitsbergen (
<figureCitation id="131D30C3FF915E4DFB9055EFFB611524" box="[1056,1188,1512,1537]" captionStart="FIGURES 3–23" captionStartId="3.[136,243,1866,1887]" captionTargetBox="[249,1334,179,1836]" captionTargetId="figure-14@3.[236,1352,175,1844]" captionTargetPageId="3" captionText="FIGURES 3–23. Transapically symmetric species of Cymbopleura with central fasciae and closely-spaced striae. 3–12. Cymbopleura laszlorum spec. nov. 3–9. Specimens from the type locality. Holotype specimen is in Fig. 5. 10–12. Specimens from the paratype locality. 13–19. Cymbopleura stauroneiformis. 13–15, 18, 19. Various tundra locations along the Back, Coppermine and Hood River corridors, Nunavut, Canada. 16, 17. Wet grassy meadow near Granite Gorge, Clearwater River, northern Saskatchewan, Canada. 20. Cymbopleura geofriedana from September Mountains Lake, Coppermine River corridor, Nunavut, Canada. 21. Cymbopleura sp. “Kasachstan” (Krammer 2003: 87, pl. 98, fig. 24). Photo by H. Lange-Bertalot. 22. Cymbopleura sp. “Messikommer” (Krammer 2003: 87, pl. 98, fig. 23). 23. Cymbopleura tynnii from wet hummocks near the Baillie River, Nunavut, Canada. Scale bars = 10 μm." pageId="2" pageNumber="49">Figs 13–19</figureCitation>
). The two species have very similar morphometric values and both have central areas in the shape of a fascia, however
<taxonomicName id="4C2657C5FF915E4DFB5A560BFABE1500" authorityName="Bahls &amp; Luna" authorityYear="2018" box="[1258,1403,1548,1573]" class="Bacillariophyceae" family="Cymbellaceae" genus="Cymbopleura" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="2" pageNumber="49" phylum="Bacillariophyta" rank="species" species="laszlorum">
<emphasis id="B952F054FF915E4DFB5A560BFABE1500" box="[1258,1403,1548,1573]" italics="true" pageId="2" pageNumber="49">C. laszlorum</emphasis>
</taxonomicName>
has wider (10–12 μm vs. 8–11 μm) and more elliptic valves with wider apices (
<tableCitation id="C6A419FDFF915E4DFC555637FBFB156C" box="[997,1086,1584,1609]" captionStart="TABLE 2" captionStartId="4.[136,224,1487,1510]" captionText="TABLE 2. Morphometric and morphological features of transapically symmetric Cymbopleura species with central fasciae and closely-spaced striae." pageId="2" pageNumber="49">Table 2</tableCitation>
). Other North American species of
<taxonomicName id="4C2657C5FF915E4DFF1A5653FE871548" authorityName="Krammer" authorityYear="2003" box="[170,322,1620,1645]" class="Bacillariophyceae" family="Cymbellaceae" genus="Cymbopleura" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="2" pageNumber="49" phylum="Bacillariophyta" rank="genus">
<emphasis id="B952F054FF915E4DFF1A5653FE871548" box="[170,322,1620,1645]" italics="true" pageId="2" pageNumber="49">Cymbopleura</emphasis>
</taxonomicName>
, including
<taxonomicName id="4C2657C5FF915E4DFE795653FCBA1548" authority="Reichardt (2004: 428)" authorityName="Reichardt" authorityPageNumber="428" authorityYear="2004" box="[457,895,1620,1645]" class="Bacillariophyceae" family="Cymbellaceae" genus="Cymbopleura" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="2" pageNumber="49" phylum="Bacillariophyta" rank="species" species="geofriedana">
<emphasis id="B952F054FF915E4DFE795653FDB01548" box="[457,629,1620,1645]" italics="true" pageId="2" pageNumber="49">C. geofriedana</emphasis>
<bibRefCitation id="EFB751B7FF915E4DFD305653FCBA1548" author="Reichardt, E." box="[640,895,1620,1645]" pageId="2" pageNumber="49" refId="ref4021" refString="Reichardt, E. (2004) Eine bemerkenswerte Diatomeenassoziation in einem Quellhabitat im Grazer Bergland, Osterreich. In: Lange-Bertalot, H. (Ed.) Iconographia Diatomologica: Annotated Diatom Micrographs, Volume 13. A. R. G. Gantner Verlag K. G., Ruggell, pp. 419 - 479." type="book" year="2004">Reichardt (2004: 428)</bibRefCitation>
</taxonomicName>
and
<taxonomicName id="4C2657C5FF915E4DFC0D5653FA621548" authority="(Krammer) Krammer (2003: 30)" authorityName="Krammer" authorityPageNumber="30" authorityYear="2003" baseAuthorityName="Krammer" box="[957,1447,1620,1645]" class="Bacillariophyceae" family="Cymbellaceae" genus="Cymbopleura" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="2" pageNumber="49" phylum="Bacillariophyta" rank="species" species="tynnii">
<emphasis id="B952F054FF915E4DFC0D5653FBE71548" box="[957,1058,1620,1645]" italics="true" pageId="2" pageNumber="49">C. tynnii</emphasis>
(Krammer)
<bibRefCitation id="EFB751B7FF915E4DFB055653FA621548" author="Krammer, K." box="[1205,1447,1620,1645]" pageId="2" pageNumber="49" refId="ref3798" refString="Krammer, K. (2003) Cymbopleura, Delicata, Navicymbula, Gomphocymbellopsis, Afrocymbella. Diatoms of Europe, Volume 4. A. R. G. Gantner Verlag K. G., Ruggell, 530 pp." type="book" year="2003">Krammer (2003: 30)</bibRefCitation>
</taxonomicName>
, have similar valve and end shapes as well as comparable striae and areolae densities (
<figureCitation id="131D30C3FF915E4DFBE2567FFB1115B4" box="[1106,1236,1656,1681]" captionStart="FIGURES 3–23" captionStartId="3.[136,243,1866,1887]" captionTargetBox="[249,1334,179,1836]" captionTargetId="figure-14@3.[236,1352,175,1844]" captionTargetPageId="3" captionText="FIGURES 3–23. Transapically symmetric species of Cymbopleura with central fasciae and closely-spaced striae. 3–12. Cymbopleura laszlorum spec. nov. 3–9. Specimens from the type locality. Holotype specimen is in Fig. 5. 10–12. Specimens from the paratype locality. 13–19. Cymbopleura stauroneiformis. 13–15, 18, 19. Various tundra locations along the Back, Coppermine and Hood River corridors, Nunavut, Canada. 16, 17. Wet grassy meadow near Granite Gorge, Clearwater River, northern Saskatchewan, Canada. 20. Cymbopleura geofriedana from September Mountains Lake, Coppermine River corridor, Nunavut, Canada. 21. Cymbopleura sp. “Kasachstan” (Krammer 2003: 87, pl. 98, fig. 24). Photo by H. Lange-Bertalot. 22. Cymbopleura sp. “Messikommer” (Krammer 2003: 87, pl. 98, fig. 23). 23. Cymbopleura tynnii from wet hummocks near the Baillie River, Nunavut, Canada. Scale bars = 10 μm." pageId="2" pageNumber="49">Figs 20–23</figureCitation>
,
<tableCitation id="C6A419FDFF915E4DFB6F567FFAF015B4" box="[1247,1333,1656,1681]" captionStart="TABLE 2" captionStartId="4.[136,224,1487,1510]" captionText="TABLE 2. Morphometric and morphological features of transapically symmetric Cymbopleura species with central fasciae and closely-spaced striae." pageId="2" pageNumber="49">Table 2</tableCitation>
), however
<taxonomicName id="4C2657C5FF915E4DFF38569BFE681590" authorityName="Reichardt" authorityYear="2004" box="[136,429,1692,1717]" class="Bacillariophyceae" family="Cymbellaceae" genus="Cymbopleura" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="2" pageNumber="49" phylum="Bacillariophyta" rank="species" species="geofriedana">
<emphasis id="B952F054FF915E4DFF38569BFE681590" box="[136,429,1692,1717]" italics="true" pageId="2" pageNumber="49">Cymbopleura geofriedana</emphasis>
</taxonomicName>
(
<figureCitation id="131D30C3FF915E4DFE0C569BFDC91590" box="[444,524,1692,1717]" captionStart="FIGURES 3–23" captionStartId="3.[136,243,1866,1887]" captionTargetBox="[249,1334,179,1836]" captionTargetId="figure-14@3.[236,1352,175,1844]" captionTargetPageId="3" captionText="FIGURES 3–23. Transapically symmetric species of Cymbopleura with central fasciae and closely-spaced striae. 3–12. Cymbopleura laszlorum spec. nov. 3–9. Specimens from the type locality. Holotype specimen is in Fig. 5. 10–12. Specimens from the paratype locality. 13–19. Cymbopleura stauroneiformis. 13–15, 18, 19. Various tundra locations along the Back, Coppermine and Hood River corridors, Nunavut, Canada. 16, 17. Wet grassy meadow near Granite Gorge, Clearwater River, northern Saskatchewan, Canada. 20. Cymbopleura geofriedana from September Mountains Lake, Coppermine River corridor, Nunavut, Canada. 21. Cymbopleura sp. “Kasachstan” (Krammer 2003: 87, pl. 98, fig. 24). Photo by H. Lange-Bertalot. 22. Cymbopleura sp. “Messikommer” (Krammer 2003: 87, pl. 98, fig. 23). 23. Cymbopleura tynnii from wet hummocks near the Baillie River, Nunavut, Canada. Scale bars = 10 μm." pageId="2" pageNumber="49">Fig. 20</figureCitation>
) is much smaller (17–30 μm long) than
<taxonomicName id="4C2657C5FF915E4DFC78569BFB901590" authorityName="Bahls &amp; Luna" authorityYear="2018" box="[968,1109,1692,1717]" class="Bacillariophyceae" family="Cymbellaceae" genus="Cymbopleura" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="2" pageNumber="49" phylum="Bacillariophyta" rank="species" species="laszlorum">
<emphasis id="B952F054FF915E4DFC78569BFB901590" box="[968,1109,1692,1717]" italics="true" pageId="2" pageNumber="49">C. laszlorum</emphasis>
</taxonomicName>
(41–54 μm long) and
<taxonomicName id="4C2657C5FF915E4DFAFC569BFA691590" authorityName="Krammer" authorityYear="2003" baseAuthorityName="Krammer" box="[1356,1452,1692,1717]" class="Bacillariophyceae" family="Cymbellaceae" genus="Cymbopleura" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="2" pageNumber="49" phylum="Bacillariophyta" rank="species" species="tynnii">
<emphasis id="B952F054FF915E4DFAFC569BFA691590" box="[1356,1452,1692,1717]" italics="true" pageId="2" pageNumber="49">C. tynnii</emphasis>
</taxonomicName>
(
<figureCitation id="131D30C3FF915E4DFF2056C7FF2715FC" box="[144,226,1728,1753]" captionStart="FIGURES 3–23" captionStartId="3.[136,243,1866,1887]" captionTargetBox="[249,1334,179,1836]" captionTargetId="figure-14@3.[236,1352,175,1844]" captionTargetPageId="3" captionText="FIGURES 3–23. Transapically symmetric species of Cymbopleura with central fasciae and closely-spaced striae. 3–12. Cymbopleura laszlorum spec. nov. 3–9. Specimens from the type locality. Holotype specimen is in Fig. 5. 10–12. Specimens from the paratype locality. 13–19. Cymbopleura stauroneiformis. 13–15, 18, 19. Various tundra locations along the Back, Coppermine and Hood River corridors, Nunavut, Canada. 16, 17. Wet grassy meadow near Granite Gorge, Clearwater River, northern Saskatchewan, Canada. 20. Cymbopleura geofriedana from September Mountains Lake, Coppermine River corridor, Nunavut, Canada. 21. Cymbopleura sp. “Kasachstan” (Krammer 2003: 87, pl. 98, fig. 24). Photo by H. Lange-Bertalot. 22. Cymbopleura sp. “Messikommer” (Krammer 2003: 87, pl. 98, fig. 23). 23. Cymbopleura tynnii from wet hummocks near the Baillie River, Nunavut, Canada. Scale bars = 10 μm." pageId="2" pageNumber="49">Fig. 23</figureCitation>
) is much larger (48–94 μm long).
</paragraph>
<paragraph id="8B992C46FF915E4DFF0D56E3FA691B38" blockId="2.[136,1453,720,2077]" pageId="2" pageNumber="49">
Two undescribed taxa from
<collectingCountry id="F3316CD6FF915E4DFDA156E3FD5115D8" box="[529,660,1764,1789]" name="Kazakhstan" pageId="2" pageNumber="49">Kazakhstan</collectingCountry>
and the Swiss Alps (
<figureCitation id="131D30C3FF915E4DFC2F56E3FBE915D8" box="[927,1068,1764,1789]" captionStart="FIGURES 3–23" captionStartId="3.[136,243,1866,1887]" captionTargetBox="[249,1334,179,1836]" captionTargetId="figure-14@3.[236,1352,175,1844]" captionTargetPageId="3" captionText="FIGURES 3–23. Transapically symmetric species of Cymbopleura with central fasciae and closely-spaced striae. 3–12. Cymbopleura laszlorum spec. nov. 3–9. Specimens from the type locality. Holotype specimen is in Fig. 5. 10–12. Specimens from the paratype locality. 13–19. Cymbopleura stauroneiformis. 13–15, 18, 19. Various tundra locations along the Back, Coppermine and Hood River corridors, Nunavut, Canada. 16, 17. Wet grassy meadow near Granite Gorge, Clearwater River, northern Saskatchewan, Canada. 20. Cymbopleura geofriedana from September Mountains Lake, Coppermine River corridor, Nunavut, Canada. 21. Cymbopleura sp. “Kasachstan” (Krammer 2003: 87, pl. 98, fig. 24). Photo by H. Lange-Bertalot. 22. Cymbopleura sp. “Messikommer” (Krammer 2003: 87, pl. 98, fig. 23). 23. Cymbopleura tynnii from wet hummocks near the Baillie River, Nunavut, Canada. Scale bars = 10 μm." pageId="2" pageNumber="49">Figs 21, 22</figureCitation>
) have wider (13–15 μm), more elliptic valves than
<emphasis id="B952F054FF915E4DFECF570FFDDA1404" box="[383,543,1800,1825]" italics="true" pageId="2" pageNumber="49">
<taxonomicName id="4C2657C5FF915E4DFECF570FFDDE1404" authorityName="Bahls &amp; Luna" authorityYear="2018" box="[383,539,1800,1825]" class="Bacillariophyceae" family="Cymbellaceae" genus="Cymbopleura" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="2" pageNumber="49" phylum="Bacillariophyta" rank="species" species="laszlorum">C. laszlorum</taxonomicName>
,
</emphasis>
but otherwise similar shapes, central areas and stria densities (
<tableCitation id="C6A419FDFF915E4DFA8D570FFA5B1404" box="[1341,1438,1800,1825]" captionStart="TABLE 2" captionStartId="4.[136,224,1487,1510]" captionText="TABLE 2. Morphometric and morphological features of transapically symmetric Cymbopleura species with central fasciae and closely-spaced striae." pageId="2" pageNumber="49">Table 2</tableCitation>
). The taxon from
<collectingCountry id="F3316CD6FF915E4DFEE8572BFE1E1460" box="[344,475,1836,1861]" name="Kazakhstan" pageId="2" pageNumber="49">Kazakhstan</collectingCountry>
(
<figureCitation id="131D30C3FF915E4DFE43572BFD8B1460" box="[499,590,1836,1861]" captionStart="FIGURES 3–23" captionStartId="3.[136,243,1866,1887]" captionTargetBox="[249,1334,179,1836]" captionTargetId="figure-14@3.[236,1352,175,1844]" captionTargetPageId="3" captionText="FIGURES 3–23. Transapically symmetric species of Cymbopleura with central fasciae and closely-spaced striae. 3–12. Cymbopleura laszlorum spec. nov. 3–9. Specimens from the type locality. Holotype specimen is in Fig. 5. 10–12. Specimens from the paratype locality. 13–19. Cymbopleura stauroneiformis. 13–15, 18, 19. Various tundra locations along the Back, Coppermine and Hood River corridors, Nunavut, Canada. 16, 17. Wet grassy meadow near Granite Gorge, Clearwater River, northern Saskatchewan, Canada. 20. Cymbopleura geofriedana from September Mountains Lake, Coppermine River corridor, Nunavut, Canada. 21. Cymbopleura sp. “Kasachstan” (Krammer 2003: 87, pl. 98, fig. 24). Photo by H. Lange-Bertalot. 22. Cymbopleura sp. “Messikommer” (Krammer 2003: 87, pl. 98, fig. 23). 23. Cymbopleura tynnii from wet hummocks near the Baillie River, Nunavut, Canada. Scale bars = 10 μm." pageId="2" pageNumber="49">Fig. 21</figureCitation>
) appears to be conspecific with
<taxonomicName id="4C2657C5FF915E4DFC5D572BFEF6144C" authority="Metzeltin et al. (2009: 30)" authorityName="Metzeltin" authorityPageNumber="30" authorityYear="2009" class="Bacillariophyceae" family="Cymbellaceae" genus="Cymbopleura" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="2" pageNumber="49" phylum="Bacillariophyta" rank="species" species="mongolica">
<emphasis id="B952F054FF915E4DFC5D572BFAC91460" box="[1005,1292,1836,1861]" italics="true" pageId="2" pageNumber="49">Cymbopleura mongolica</emphasis>
<bibRefCitation id="EFB751B7FF915E4DFAAC572BFEF6144C" author="Metzeltin, D. &amp; Lange-Bertalot, H. &amp; Nergui, S." pageId="2" pageNumber="49" refId="ref3913" refString="Metzeltin, D., Lange-Bertalot, H. &amp; Nergui, S. (2009) Diatoms in Mongolia. In: Lange-Bertalot, H. (Ed.) Iconographia Diatomologica. Annotated Diatom Micrographs, Volume 20. A. R. G. Gantner Verlag K. G., Ruggell, pp. 1 - 686." type="book" year="2009">
Metzeltin
<emphasis id="B952F054FF915E4DFA27572BFF60144C" italics="true" pageId="2" pageNumber="49">et al.</emphasis>
(2009: 30)
</bibRefCitation>
</taxonomicName>
, which has valves with comparable shape and morphometrics (
<tableCitation id="C6A419FDFF915E4DFB8A5757FB5F144C" box="[1082,1178,1872,1897]" captionStart="TABLE 2" captionStartId="4.[136,224,1487,1510]" captionText="TABLE 2. Morphometric and morphological features of transapically symmetric Cymbopleura species with central fasciae and closely-spaced striae." pageId="2" pageNumber="49">Table 2</tableCitation>
). The taxon that most closely resembles
<taxonomicName id="4C2657C5FF915E4DFEEC5773FE2B14A8" authorityName="Bahls &amp; Luna" authorityYear="2018" box="[348,494,1908,1933]" class="Bacillariophyceae" family="Cymbellaceae" genus="Cymbopleura" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="2" pageNumber="49" phylum="Bacillariophyta" rank="species" species="laszlorum">
<emphasis id="B952F054FF915E4DFEEC5773FE2B14A8" box="[348,494,1908,1933]" italics="true" pageId="2" pageNumber="49">C. laszlorum</emphasis>
</taxonomicName>
lives at
<quantity id="4CDE81A3FF915E4DFDE75773FD6A14A8" box="[599,687,1908,1933]" metricMagnitude="3" metricUnit="m" metricValue="4.8" pageId="2" pageNumber="49" unit="m" value="4800.0">4800 m</quantity>
a.s.l. in the Everest region of
<collectingCountry id="F3316CD6FF915E4DFBA65773FB9814A8" box="[1046,1117,1908,1933]" name="Nepal" pageId="2" pageNumber="49">Nepal</collectingCountry>
:
<taxonomicName id="4C2657C5FF915E4DFBDB5773FDC41494" authority="(Van de Vijver et al. 2011: 257)" baseAuthorityName="Van de Vijver" baseAuthorityPageNumber="257" baseAuthorityYear="2011" class="Bacillariophyceae" family="Cymbellaceae" genus="Cymbopleura" higherTaxonomySource="GBIF" isUncertain="true" kingdom="Chromista" order="Cymbellales" pageId="2" pageNumber="49" phylum="Bacillariophyta" rank="species" species="mongolica">
<emphasis id="B952F054FF915E4DFBDB5773FAC614A8" box="[1131,1283,1908,1933]" italics="true" pageId="2" pageNumber="49">Cymbopleura</emphasis>
cf.
<emphasis id="B952F054FF915E4DFA855773FA6E14A8" box="[1333,1451,1908,1933]" italics="true" pageId="2" pageNumber="49">mongolica</emphasis>
(
<bibRefCitation id="EFB751B7FF915E4DFF3F579FFE3C1494" author="Van de Vijver, B. &amp; Juttner, I. &amp; Gurung, S. &amp; Sharma, C. &amp; Sharma, S. &amp; de Haan, M. &amp; Cox, E." box="[143,505,1944,1969]" pageId="2" pageNumber="49" pagination="245 - 269" refId="ref4135" refString="Van de Vijver, B., Juttner, I., Gurung, S., Sharma, C., Sharma, S., de Haan, M. &amp; Cox, E. (2011) The genus Cymbopleura (Cymbellales, Bacillariophyta) from high altitude freshwater habitats, Everest National Park, Nepal, with the description of two new species. Fottea 11: 245 - 269. https: // doi. org / 10.5507 / fot. 2011.025" type="journal article" year="2011">
Van de Vijver
<emphasis id="B952F054FF915E4DFE8C579FFEBD1494" box="[316,376,1944,1969]" italics="true" pageId="2" pageNumber="49">et al.</emphasis>
2011: 257
</bibRefCitation>
)
</taxonomicName>
. This taxon differs from
<taxonomicName id="4C2657C5FF915E4DFC98579FFC071494" box="[808,962,1944,1969]" class="Bacillariophyceae" family="Cymbellaceae" genus="Cymbopleura" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="2" pageNumber="49" phylum="Bacillariophyta" rank="species" species="mongolica">
<emphasis id="B952F054FF915E4DFC98579FFC071494" box="[808,962,1944,1969]" italics="true" pageId="2" pageNumber="49">C. mongolica</emphasis>
</taxonomicName>
by its smaller dimensions (10–11 vs. 12– 14 μm wide) and slightly higher stria density (17–19 vs.
<quantity id="4CDE81A3FF915E4DFC8257BBFC5F14F0" box="[818,922,1980,2005]" metricMagnitude="-1" metricUnit="m" metricValue="4.064" metricValueMax="4.318" metricValueMin="3.81" pageId="2" pageNumber="49" unit="in" value="16.0" valueMax="17.0" valueMin="15.0">15–17 in</quantity>
10 μm). It differs from
<taxonomicName id="4C2657C5FF915E4DFB7257BBFA9014F0" authorityName="Bahls &amp; Luna" authorityYear="2018" box="[1218,1365,1980,2005]" class="Bacillariophyceae" family="Cymbellaceae" genus="Cymbopleura" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="2" pageNumber="49" phylum="Bacillariophyta" rank="species" species="laszlorum">
<emphasis id="B952F054FF915E4DFB7257BBFA9014F0" box="[1218,1365,1980,2005]" italics="true" pageId="2" pageNumber="49">C. laszlorum</emphasis>
</taxonomicName>
by the shape of the ends, which are subcapitate rather than rostrate, and by a higher areola density (30–35 vs.
<quantity id="4CDE81A3FF915E4DFAF557E7FA6914DC" box="[1349,1452,2016,2041]" metricMagnitude="-1" metricUnit="m" metricValue="6.35" metricValueMax="7.62" metricValueMin="5.08" pageId="2" pageNumber="49" unit="in" value="25.0" valueMax="30.0" valueMin="20.0">20–30 in</quantity>
10 μm) (
<tableCitation id="C6A419FDFF915E4DFF405803FE8E1B38" box="[240,331,2052,2077]" captionStart="TABLE 2" captionStartId="4.[136,224,1487,1510]" captionText="TABLE 2. Morphometric and morphological features of transapically symmetric Cymbopleura species with central fasciae and closely-spaced striae." pageId="2" pageNumber="49">Table 2</tableCitation>
). All of the taxa discussed above are from boreal or alpine habitats in the northern hemisphere.
</paragraph>
<caption id="DF597CCEFF905E4CFF38574DFB731B0F" pageId="3" pageNumber="50" startId="3.[136,243,1866,1887]" targetBox="[249,1334,179,1836]" targetPageId="3" targetType="figure">
<paragraph id="8B992C46FF905E4CFF38574DFB731B0F" blockId="3.[136,1453,1866,2090]" pageId="3" pageNumber="50">
<emphasis id="B952F054FF905E4CFF38574DFEF5147A" bold="true" box="[136,304,1866,1887]" pageId="3" pageNumber="50">FIGURES 3–23.</emphasis>
Transapically symmetric species of
<taxonomicName id="4C2657C5FF905E4CFD28574DFCDE147A" authorityName="Krammer" authorityYear="2003" box="[664,795,1866,1887]" class="Bacillariophyceae" family="Cymbellaceae" genus="Cymbopleura" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="3" pageNumber="50" phylum="Bacillariophyta" rank="genus">
<emphasis id="B952F054FF905E4CFD28574DFCDE147A" box="[664,795,1866,1887]" italics="true" pageId="3" pageNumber="50">Cymbopleura</emphasis>
</taxonomicName>
with central fasciae and closely-spaced striae. 3
<emphasis id="B952F054FF905E4CFB47574DFAC6147A" bold="true" box="[1271,1283,1866,1887]" pageId="3" pageNumber="50">–</emphasis>
12.
<taxonomicName id="4C2657C5FF905E4CFA99574DFF2214A5" authorityName="Bahls &amp; Luna" authorityYear="2018" class="Bacillariophyceae" family="Cymbellaceae" genus="Cymbopleura" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="3" pageNumber="50" phylum="Bacillariophyta" rank="species" species="laszlorum" status="sp. nov.">
<emphasis id="B952F054FF905E4CFA99574DFF2214A5" italics="true" pageId="3" pageNumber="50">Cymbopleura laszlorum</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A2614D2FFF905E4CFF5D576CFE8814A5" box="[237,333,1899,1920]" pageId="3" pageNumber="50" rank="species">spec. nov.</taxonomicNameLabel>
3–9. Specimens from the type locality. Holotype specimen is in Fig. 5. 10–12. Specimens from the paratype locality. 13–19.
<taxonomicName id="4C2657C5FF905E4CFF62578AFE361487" authorityName="Krammer" authorityYear="2003" baseAuthorityName="Lagerstedt" box="[210,499,1933,1954]" class="Bacillariophyceae" family="Cymbellaceae" genus="Cymbopleura" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="3" pageNumber="50" phylum="Bacillariophyta" rank="species" species="stauroneiformis">
<emphasis id="B952F054FF905E4CFF62578AFE361487" box="[210,499,1933,1954]" italics="true" pageId="3" pageNumber="50">Cymbopleura stauroneiformis</emphasis>
</taxonomicName>
. 13–15, 18, 19. Various tundra locations along the Back, Coppermine and Hood River corridors, Nunavut, Canada. 16, 17. Wet grassy meadow near Granite Gorge, Clearwater River, northern Saskatchewan, Canada. 20.
<taxonomicName id="4C2657C5FF905E4CFA9957A9FF3914C1" authorityName="Reichardt" authorityYear="2004" class="Bacillariophyceae" family="Cymbellaceae" genus="Cymbopleura" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="3" pageNumber="50" phylum="Bacillariophyta" rank="species" species="geofriedana">
<emphasis id="B952F054FF905E4CFA9957A9FF3914C1" italics="true" pageId="3" pageNumber="50">Cymbopleura geofriedana</emphasis>
</taxonomicName>
from September Mountains Lake, Coppermine River corridor, Nunavut, Canada. 21.
<taxonomicName id="4C2657C5FF905E4CFBC357C8FADB14C1" box="[1139,1310,1999,2020]" class="Bacillariophyceae" family="Cymbellaceae" genus="Cymbopleura" kingdom="Chromista" order="Cymbellales" pageId="3" pageNumber="50" phylum="Bacillariophyta" rank="species" species="undetermined">
<emphasis id="B952F054FF905E4CFBC357C8FB3314C1" box="[1139,1270,1999,2020]" italics="true" pageId="3" pageNumber="50">Cymbopleura</emphasis>
sp.
</taxonomicName>
“Kasachstan” (
<bibRefCitation id="EFB751B7FF905E4CFF3E57F6FE8F1B23" author="Krammer, K." box="[142,330,2033,2054]" pageId="3" pageNumber="50" refId="ref3798" refString="Krammer, K. (2003) Cymbopleura, Delicata, Navicymbula, Gomphocymbellopsis, Afrocymbella. Diatoms of Europe, Volume 4. A. R. G. Gantner Verlag K. G., Ruggell, 530 pp." type="book" year="2003">Krammer 2003: 87</bibRefCitation>
, pl. 98, fig. 24). Photo by H. Lange-Bertalot. 22.
<taxonomicName id="4C2657C5FF905E4CFC9A57F6FC0A1B23" box="[810,975,2033,2054]" class="Bacillariophyceae" family="Cymbellaceae" genus="Cymbopleura" kingdom="Chromista" order="Cymbellales" pageId="3" pageNumber="50" phylum="Bacillariophyta" rank="species" species="undetermined">
<emphasis id="B952F054FF905E4CFC9A57F6FC681B23" box="[810,941,2033,2054]" italics="true" pageId="3" pageNumber="50">Cymbopleura</emphasis>
sp.
</taxonomicName>
“Messikommer” (
<bibRefCitation id="EFB751B7FF905E4CFB3157F6FAF91B23" author="Krammer, K." box="[1153,1340,2033,2054]" pageId="3" pageNumber="50" refId="ref3798" refString="Krammer, K. (2003) Cymbopleura, Delicata, Navicymbula, Gomphocymbellopsis, Afrocymbella. Diatoms of Europe, Volume 4. A. R. G. Gantner Verlag K. G., Ruggell, 530 pp." type="book" year="2003">Krammer 2003: 87</bibRefCitation>
, pl. 98, fig. 23). 23.
<taxonomicName id="4C2657C5FF905E4CFF685812FE5D1B0F" authorityName="Krammer" authorityYear="2003" baseAuthorityName="Krammer" box="[216,408,2069,2090]" class="Bacillariophyceae" family="Cymbellaceae" genus="Cymbopleura" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="3" pageNumber="50" phylum="Bacillariophyta" rank="species" species="tynnii">
<emphasis id="B952F054FF905E4CFF685812FE5D1B0F" box="[216,408,2069,2090]" italics="true" pageId="3" pageNumber="50">Cymbopleura tynnii</emphasis>
</taxonomicName>
from wet hummocks near the Baillie River, Nunavut, Canada. Scale bars = 10 μm.
</paragraph>
</caption>
<paragraph id="8B992C46FF975E4BFF0D50A7FC791200" blockId="4.[136,1452,160,365]" pageId="4" pageNumber="51">
Diatom associates:—At the
<typeStatus id="549D92E4FF975E4BFDB550A7FDF0139C" box="[517,565,160,185]" pageId="4" pageNumber="51">type</typeStatus>
locality,
<taxonomicName id="4C2657C5FF975E4BFD1450A7FC73139C" authorityName="Bahls &amp; Luna" authorityYear="2018" box="[676,950,160,185]" class="Bacillariophyceae" family="Cymbellaceae" genus="Cymbopleura" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="4" pageNumber="51" phylum="Bacillariophyta" rank="species" species="laszlorum">
<emphasis id="B952F054FF975E4BFD1450A7FC73139C" box="[676,950,160,185]" italics="true" pageId="4" pageNumber="51">Cymbopleura laszlorum</emphasis>
</taxonomicName>
was an uncommon (&lt;1 % abundance) but visually conspicuous element of a benthic diatom association dominated numerically by
<taxonomicName id="4C2657C5FF975E4BFB0E50C3FE9C1224" authority="(Grunow) Grunow" authorityName="Grunow" authorityYear="1880" baseAuthorityName="Grunow" class="Bacillariophyceae" family="Naviculaceae" genus="Mastogloia" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="4" pageNumber="51" phylum="Bacillariophyta" rank="species" species="lacustris">
<emphasis id="B952F054FF975E4BFB0E50C3FA6E13F8" box="[1214,1451,196,221]" italics="true" pageId="4" pageNumber="51">Mastogloia lacustris</emphasis>
(Grunow) Grunow
</taxonomicName>
in
<bibRefCitation id="EFB751B7FF975E4BFECC50EFFDBA1224" author="Van Heurck, H." box="[380,639,232,257]" pageId="4" pageNumber="51" refId="ref4298" refString="Van Heurck, H. (1880) Synopsis des Diatomees de Belgique. Text &amp; Atlas. Brouwers &amp; Co., Anvers. 235 pp., 132 pls." type="book" year="1880">Van Heurck (1880: 70)</bibRefCitation>
,
<taxonomicName id="4C2657C5FF975E4BFD3B50EFFB3B1224" authority="(Grunow) Krammer (2003: 99)" authorityName="Krammer" authorityPageNumber="99" authorityYear="2003" baseAuthorityName="Grunow" box="[651,1278,232,257]" class="Bacillariophyceae" family="Cymbellaceae" genus="Cymbopleura" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="4" pageNumber="51" phylum="Bacillariophyta" rank="species" species="florentina">
<emphasis id="B952F054FF975E4BFD3B50EFFC521224" box="[651,919,232,257]" italics="true" pageId="4" pageNumber="51">Cymbopleura florentina</emphasis>
(Grunow)
<bibRefCitation id="EFB751B7FF975E4BFBA450EFFB3B1224" author="Krammer, K." box="[1044,1278,232,257]" pageId="4" pageNumber="51" refId="ref3798" refString="Krammer, K. (2003) Cymbopleura, Delicata, Navicymbula, Gomphocymbellopsis, Afrocymbella. Diatoms of Europe, Volume 4. A. R. G. Gantner Verlag K. G., Ruggell, 530 pp." type="book" year="2003">Krammer (2003: 99)</bibRefCitation>
</taxonomicName>
, and
<taxonomicName id="4C2657C5FF975E4BFA8850EFFDF01200" authority="(Ehrenberg) Kutzing (1844: 35)" authorityName="Kutzing" authorityPageNumber="35" authorityYear="1844" baseAuthorityName="Ehrenberg" class="Bacillariophyceae" family="Rhopalodiaceae" genus="Epithemia" higherTaxonomySource="GBIF" kingdom="Chromista" order="Rhopalodiales" pageId="4" pageNumber="51" phylum="Bacillariophyta" rank="species" species="argus">
<emphasis id="B952F054FF975E4BFA8850EFFF021200" italics="true" pageId="4" pageNumber="51">Epithemia argus</emphasis>
(Ehrenberg)
<bibRefCitation id="EFB751B7FF975E4BFEEC510BFDF01200" author="Kutzing, F. T." box="[348,565,268,293]" pageId="4" pageNumber="51" refId="ref3840" refString="Kutzing, F. T. (1844) Die kieselschaligen Bacillarien oder Diatomeen. Nordhausen, 152 pp., 30 pls." type="book" year="1844">Kützing (1844: 35)</bibRefCitation>
</taxonomicName>
, in decreasing order of abundance.
</paragraph>
<paragraph id="8B992C46FF975E4BFF0D5137FE0F1248" blockId="4.[136,1452,160,365]" pageId="4" pageNumber="51">Etymology:—The new species is dedicated to the Jeff Laszlo family for its steadfast stewardship of this rare and invaluable wetland resource.</paragraph>
</subSubSection>
</treatment>
</document>