treatments-xml/data/A9/27/81/A9278170FFD08106FF5B55496C6DFE7B.xml

<document id="03E1D038D52D57B2AA851C81EC57B2AC" ID-DOI="10.11646/phytotaxa.267.4.1" ID-ISSN="1179-3163" ID-Zenodo-Dep="13667166" 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.treatmentCitations_approvedBy="felipe" IM.treatments_approvedBy="felipe" checkinTime="1725393618641" checkinUser="felipe" docAuthor="Tudesque, Loïc, Cohu, René Le &amp; Wetzel, Carlos E." docDate="2016" docId="A9278170FFD08106FF5B55496C6DFE7B" docLanguage="en" docName="phytotaxa.267.4.1.pdf" docOrigin="Phytotaxa 267 (4)" docSource="http://dx.doi.org/10.11646/phytotaxa.267.4.1" docStyle="DocumentStyle:96748F8F1B6C902996E134952A3A36B9.13:Phytotaxa.2014-.journal_article" docStyleId="96748F8F1B6C902996E134952A3A36B9" docStyleName="Phytotaxa.2014-.journal_article" docStyleVersion="13" docTitle="Platessa guianensis Le Cohu, Tudesque &amp; C. E. Wetzel 2016, sp. nov." docType="treatment" docVersion="2" lastPageNumber="245" masterDocId="551EF908FFD3810EFFD3522E681CFF86" masterDocTitle="Two new Platessa (Bacillariophyceae) from Amazonia: Platessa guianensis spec. nov., and P. itoupensis spec. nov." masterLastPageNumber="255" masterPageNumber="237" pageNumber="240" updateTime="1725415697412" updateUser="ExternalLinkService" zenodo-license-figures="UNSPECIFIED" zenodo-license-treatments="UNSPECIFIED">
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<mods:title id="B31C0C27BD9F021C56B36A4D1D3A18A6">Two new Platessa (Bacillariophyceae) from Amazonia: Platessa guianensis spec. nov., and P. itoupensis spec. nov.</mods:title>
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<mods:namePart id="1AAE0B1EE060B0980D210D40902A2B4A">Tudesque, Loïc</mods:namePart>
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<taxonomicName id="E68E4BE5FFD0810DFF5B55496B19F805" authority="Le Cohu, Tudesque &amp; C.E.Wetzel" authorityName="Le Cohu, Tudesque &amp; C. E. Wetzel" authorityYear="2016" box="[136,773,1895,1923]" class="Bacillariophyceae" family="Achnanthaceae" genus="Platessa" higherTaxonomySource="GBIF" kingdom="Chromista" order="Achnanthales" pageId="3" pageNumber="240" phylum="Bacillariophyta" rank="species" species="guianensis" status="sp. nov.">
<emphasis id="13FAEC74FFD0810DFF5B55496976F804" bold="true" box="[136,362,1895,1922]" italics="true" pageId="3" pageNumber="240">Platessa guianensis</emphasis>
Le Cohu, Tudesque &amp; C.E.Wetzel
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. 
<emphasis id="13FAEC74FFD0810DFCEA55466B7FF804" bold="true" box="[825,867,1896,1922]" italics="true" pageId="3" pageNumber="240">nov</emphasis>
.
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(
<figureCitation id="B9B52CE3FFD0810DFCAB55446BF2F805" box="[888,1006,1897,1923]" captionStart-0="FIGURES 2–37" captionStart-1="FIGURES 38–42" captionStart-2="FIGURES 43–45" captionStart-3="FIGURES 46–71" captionStartId-0="4.[136,243,1688,1709]" captionStartId-1="5.[136,243,1808,1829]" captionStartId-2="6.[136,243,1948,1969]" captionStartId-3="7.[136,243,1854,1875]" captionTargetBox-0="[166,1424,941,1647]" captionTargetBox-1="[161,1426,209,1774]" captionTargetBox-2="[207,1387,209,1913]" captionTargetBox-3="[169,1426,207,1821]" captionTargetId-0="figure-459@4.[151,1436,926,1662]" captionTargetId-1="figure-14@5.[151,1436,190,1783]" captionTargetId-2="figure-16@6.[190,1398,190,1923]" captionTargetId-3="figure-14@7.[151,1436,190,1829]" captionTargetPageId-0="4" captionTargetPageId-1="5" captionTargetPageId-2="6" captionTargetPageId-3="7" captionText-0="FIGURES 2–37. Platessa guianensis sp. nov., type material from French Guiana, LM, range of size. 2–13, 14a–25a. Raphe sternum valve (RSV). 14b–25b, 26–37. Sternum valve (SV)." captionText-1="FIGURES 38–42. Platessa guianensis sp. nov., type material from French Guiana SEM. 38. External view of the RSV showing the raphe sternum features, the biseriate striae, the concavity of the valve and the discontinuous row of elongated “poroids” on the mantle. 39. Detail of the proximal raphe ending surrounded by a groove (arrow). 40. Detail of the distal raphe ending with delta-shaped groove with angular outline (arrow) and discontinuity of the mantle “poroids”. 41. Internal view of the RSV showing the raphe sternum features with proximal raphe endings deflected in opposite directions, slightly deflected distal raphe endings, tiny helictoglossae. 42. Ultrastructural detail of the internal aperture of the areola (cribrum) and inner view of poroid (arrow)." captionText-2="FIGURES 43–45. Platessa guianensis sp. nov., type material from French Guiana SEM. 43. External view of the SV with tiny depressions in the axial area, elongated poroids on the mantle located in a groove. Notches (arrows). 44. Complete frustule showing internal view of the RSV and internal view of the SV, the open copulae, the valvocopula and the notches (arrow). 45. Internal view of the SV with trace of vestigial raphe (arrow)." captionText-3="FIGURES 46–71. Platessa guianensis sp. nov. from Rio Negro basin (Brazilian Amazon), LM and SEM. 46–55: sternum valve. 56–64: raphe sternum valve. 65, 67, 69, 71. External views. 66, 68, 70. Internal views. Note the internal row of tiny marginal poroids (Figs 66, 68, arrows) and grooves on the raphe branches (Fig. 67, arrow). 46–68: Sample SP-400. 274, Rio Negro, Brazilian Amazon. 69–71 Sample SP-400.315, Rio Negro, Brazilian Amazon." figureDoi-0="http://doi.org/10.5281/zenodo.13667174" figureDoi-1="http://doi.org/10.5281/zenodo.13667178" figureDoi-2="http://doi.org/10.5281/zenodo.13667184" figureDoi-3="http://doi.org/10.5281/zenodo.13667190" httpUri-0="https://zenodo.org/record/13667174/files/figure.png" httpUri-1="https://zenodo.org/record/13667178/files/figure.png" httpUri-2="https://zenodo.org/record/13667184/files/figure.png" httpUri-3="https://zenodo.org/record/13667190/files/figure.png" pageId="3" pageNumber="240">Figs 2−71</figureCitation>
)
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<paragraph id="21313066FFD0810AFF5B559A6D02FC9F" blockId="3.[136,1452,1972,2065]" lastBlockId="4.[136,1452,160,901]" lastPageId="4" lastPageNumber="241" pageId="3" pageNumber="240">
LM (
<figureCitation id="B9B52CE3FFD0810DFF6A559A6901F84F" box="[185,285,1972,1993]" captionStart="FIGURES 2–37" captionStartId="4.[136,243,1688,1709]" captionTargetBox="[166,1424,941,1647]" captionTargetId="figure-459@4.[151,1436,926,1662]" captionTargetPageId="4" captionText="FIGURES 2–37. Platessa guianensis sp. nov., type material from French Guiana, LM, range of size. 2–13, 14a–25a. Raphe sternum valve (RSV). 14b–25b, 26–37. Sternum valve (SV)." figureDoi="http://doi.org/10.5281/zenodo.13667174" httpUri="https://zenodo.org/record/13667174/files/figure.png" pageId="3" pageNumber="240">Figs 2−37</figureCitation>
, 
<figureCitation id="B9B52CE3FFD0810DFEFB559A6975F84F" box="[296,361,1972,1993]" captionStart="FIGURES 46–71" captionStartId="7.[136,243,1854,1875]" captionTargetBox="[169,1426,207,1821]" captionTargetId="figure-14@7.[151,1436,190,1829]" captionTargetPageId="7" captionText="FIGURES 46–71. Platessa guianensis sp. nov. from Rio Negro basin (Brazilian Amazon), LM and SEM. 46–55: sternum valve. 56–64: raphe sternum valve. 65, 67, 69, 71. External views. 66, 68, 70. Internal views. Note the internal row of tiny marginal poroids (Figs 66, 68, arrows) and grooves on the raphe branches (Fig. 67, arrow). 46–68: Sample SP-400. 274, Rio Negro, Brazilian Amazon. 69–71 Sample SP-400.315, Rio Negro, Brazilian Amazon." figureDoi="http://doi.org/10.5281/zenodo.13667190" httpUri="https://zenodo.org/record/13667190/files/figure.png" pageId="3" pageNumber="240">46−64</figureCitation>
): Valves elliptic-rhomboidal with broadly rounded apices. Length: 9.0−15.3 μm, width: 6.7−8.9 μm, ratio length/ width: 1.5−1.8 (n= 67). Raphe-sternum valve (RSV) (
<figureCitation id="B9B52CE3FFD0810DFD1455F66B97F86B" box="[711,907,2008,2029]" captionStart="FIGURES 2–37" captionStartId="4.[136,243,1688,1709]" captionTargetBox="[166,1424,941,1647]" captionTargetId="figure-459@4.[151,1436,926,1662]" captionTargetPageId="4" captionText="FIGURES 2–37. Platessa guianensis sp. nov., type material from French Guiana, LM, range of size. 2–13, 14a–25a. Raphe sternum valve (RSV). 14b–25b, 26–37. Sternum valve (SV)." figureDoi="http://doi.org/10.5281/zenodo.13667174" httpUri="https://zenodo.org/record/13667174/files/figure.png" pageId="3" pageNumber="240">Figs 2−13, 14a−25a</figureCitation>
, 
<figureCitation id="B9B52CE3FFD0810DFC4555F66BCBF86B" box="[918,983,2008,2029]" captionStart="FIGURES 46–71" captionStartId="7.[136,243,1854,1875]" captionTargetBox="[169,1426,207,1821]" captionTargetId="figure-14@7.[151,1436,190,1829]" captionTargetPageId="7" captionText="FIGURES 46–71. Platessa guianensis sp. nov. from Rio Negro basin (Brazilian Amazon), LM and SEM. 46–55: sternum valve. 56–64: raphe sternum valve. 65, 67, 69, 71. External views. 66, 68, 70. Internal views. Note the internal row of tiny marginal poroids (Figs 66, 68, arrows) and grooves on the raphe branches (Fig. 67, arrow). 46–68: Sample SP-400. 274, Rio Negro, Brazilian Amazon. 69–71 Sample SP-400.315, Rio Negro, Brazilian Amazon." figureDoi="http://doi.org/10.5281/zenodo.13667190" httpUri="https://zenodo.org/record/13667190/files/figure.png" pageId="3" pageNumber="240">56−64</figureCitation>
): axial area very narrow almost non-discernible; central area transapically expanded and bordered by several alternately longer and shorter striae (3 to 5—mostly 5). Striae more irregularly spaced from one other in the central area. Striae clearly radiate throughout the valve, 
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10 μm. Raphe filiform with expanded proximal endings. Sternum valve (SV) (
<figureCitation id="B9B52CE3FFD7810AFD0152EA6BB8FF5F" box="[722,932,196,217]" captionStart="FIGURES 2–37" captionStartId="4.[136,243,1688,1709]" captionTargetBox="[166,1424,941,1647]" captionTargetId="figure-459@4.[151,1436,926,1662]" captionTargetPageId="4" captionText="FIGURES 2–37. Platessa guianensis sp. nov., type material from French Guiana, LM, range of size. 2–13, 14a–25a. Raphe sternum valve (RSV). 14b–25b, 26–37. Sternum valve (SV)." figureDoi="http://doi.org/10.5281/zenodo.13667174" httpUri="https://zenodo.org/record/13667174/files/figure.png" pageId="4" pageNumber="241">Figs 14b−25b, 26−37</figureCitation>
, 
<figureCitation id="B9B52CE3FFD7810AFC7D52EA6BECFF5F" box="[942,1008,196,217]" captionStart="FIGURES 46–71" captionStartId="7.[136,243,1854,1875]" captionTargetBox="[169,1426,207,1821]" captionTargetId="figure-14@7.[151,1436,190,1829]" captionTargetPageId="7" captionText="FIGURES 46–71. Platessa guianensis sp. nov. from Rio Negro basin (Brazilian Amazon), LM and SEM. 46–55: sternum valve. 56–64: raphe sternum valve. 65, 67, 69, 71. External views. 66, 68, 70. Internal views. Note the internal row of tiny marginal poroids (Figs 66, 68, arrows) and grooves on the raphe branches (Fig. 67, arrow). 46–68: Sample SP-400. 274, Rio Negro, Brazilian Amazon. 69–71 Sample SP-400.315, Rio Negro, Brazilian Amazon." figureDoi="http://doi.org/10.5281/zenodo.13667190" httpUri="https://zenodo.org/record/13667190/files/figure.png" pageId="4" pageNumber="241">46−55</figureCitation>
): wide rhomboidal to elliptical axial area with numerous dots. Short striae, 
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10 μm, parallel in the center and becoming radiate to the apices. On both valves the optical focus on the entire valve is not possible, suggesting the curvature of the frustule. SEM (
<figureCitation id="B9B52CE3FFD7810AFC2F53226C77FEA7" box="[1020,1131,268,289]" captionStart-0="FIGURES 38–42" captionStart-1="FIGURES 43–45" captionStartId-0="5.[136,243,1808,1829]" captionStartId-1="6.[136,243,1948,1969]" captionTargetBox-0="[161,1426,209,1774]" captionTargetBox-1="[207,1387,209,1913]" captionTargetId-0="figure-14@5.[151,1436,190,1783]" captionTargetId-1="figure-16@6.[190,1398,190,1923]" captionTargetPageId-0="5" captionTargetPageId-1="6" captionText-0="FIGURES 38–42. Platessa guianensis sp. nov., type material from French Guiana SEM. 38. External view of the RSV showing the raphe sternum features, the biseriate striae, the concavity of the valve and the discontinuous row of elongated “poroids” on the mantle. 39. Detail of the proximal raphe ending surrounded by a groove (arrow). 40. Detail of the distal raphe ending with delta-shaped groove with angular outline (arrow) and discontinuity of the mantle “poroids”. 41. Internal view of the RSV showing the raphe sternum features with proximal raphe endings deflected in opposite directions, slightly deflected distal raphe endings, tiny helictoglossae. 42. Ultrastructural detail of the internal aperture of the areola (cribrum) and inner view of poroid (arrow)." captionText-1="FIGURES 43–45. Platessa guianensis sp. nov., type material from French Guiana SEM. 43. External view of the SV with tiny depressions in the axial area, elongated poroids on the mantle located in a groove. Notches (arrows). 44. Complete frustule showing internal view of the RSV and internal view of the SV, the open copulae, the valvocopula and the notches (arrow). 45. Internal view of the SV with trace of vestigial raphe (arrow)." figureDoi-0="http://doi.org/10.5281/zenodo.13667178" figureDoi-1="http://doi.org/10.5281/zenodo.13667184" httpUri-0="https://zenodo.org/record/13667178/files/figure.png" httpUri-1="https://zenodo.org/record/13667184/files/figure.png" pageId="4" pageNumber="241">Figs 38−45</figureCitation>
, 
<figureCitation id="B9B52CE3FFD7810AFBA653226CA9FEA7" box="[1141,1205,268,289]" captionStart="FIGURES 46–71" captionStartId="7.[136,243,1854,1875]" captionTargetBox="[169,1426,207,1821]" captionTargetId="figure-14@7.[151,1436,190,1829]" captionTargetPageId="7" captionText="FIGURES 46–71. Platessa guianensis sp. nov. from Rio Negro basin (Brazilian Amazon), LM and SEM. 46–55: sternum valve. 56–64: raphe sternum valve. 65, 67, 69, 71. External views. 66, 68, 70. Internal views. Note the internal row of tiny marginal poroids (Figs 66, 68, arrows) and grooves on the raphe branches (Fig. 67, arrow). 46–68: Sample SP-400. 274, Rio Negro, Brazilian Amazon. 69–71 Sample SP-400.315, Rio Negro, Brazilian Amazon." figureDoi="http://doi.org/10.5281/zenodo.13667190" httpUri="https://zenodo.org/record/13667190/files/figure.png" pageId="4" pageNumber="241">65−71</figureCitation>
): externally, RSV slightly concave. Raphe branches straight with proximal endings surrounded by a shallow groove extending on either side of the raphe fissure on a short distance between the central and the terminal pore (
<figureCitation id="B9B52CE3FFD7810AFCDF537A6B66FEEF" box="[780,890,340,361]" captionStart="FIGURES 38–42" captionStartId="5.[136,243,1808,1829]" captionTargetBox="[161,1426,209,1774]" captionTargetId="figure-14@5.[151,1436,190,1783]" captionTargetPageId="5" captionText="FIGURES 38–42. Platessa guianensis sp. nov., type material from French Guiana SEM. 38. External view of the RSV showing the raphe sternum features, the biseriate striae, the concavity of the valve and the discontinuous row of elongated “poroids” on the mantle. 39. Detail of the proximal raphe ending surrounded by a groove (arrow). 40. Detail of the distal raphe ending with delta-shaped groove with angular outline (arrow) and discontinuity of the mantle “poroids”. 41. Internal view of the RSV showing the raphe sternum features with proximal raphe endings deflected in opposite directions, slightly deflected distal raphe endings, tiny helictoglossae. 42. Ultrastructural detail of the internal aperture of the areola (cribrum) and inner view of poroid (arrow)." figureDoi="http://doi.org/10.5281/zenodo.13667178" httpUri="https://zenodo.org/record/13667178/files/figure.png" pageId="4" pageNumber="241">Figs 38, 39</figureCitation>
, 
<figureCitation id="B9B52CE3FFD7810AFC57537A6B80FEEF" box="[900,924,340,361]" captionStart="FIGURES 46–71" captionStartId="7.[136,243,1854,1875]" captionTargetBox="[169,1426,207,1821]" captionTargetId="figure-14@7.[151,1436,190,1829]" captionTargetPageId="7" captionText="FIGURES 46–71. Platessa guianensis sp. nov. from Rio Negro basin (Brazilian Amazon), LM and SEM. 46–55: sternum valve. 56–64: raphe sternum valve. 65, 67, 69, 71. External views. 66, 68, 70. Internal views. Note the internal row of tiny marginal poroids (Figs 66, 68, arrows) and grooves on the raphe branches (Fig. 67, arrow). 46–68: Sample SP-400. 274, Rio Negro, Brazilian Amazon. 69–71 Sample SP-400.315, Rio Negro, Brazilian Amazon." figureDoi="http://doi.org/10.5281/zenodo.13667190" httpUri="https://zenodo.org/record/13667190/files/figure.png" pageId="4" pageNumber="241">67</figureCitation>
arrows). Distal raphe endings located in a cone-shaped (delta) depression bordered by a shallow groove (
<figureCitation id="B9B52CE3FFD7810AFD7753566AECFE0B" box="[676,752,376,397]" captionStart="FIGURES 38–42" captionStartId="5.[136,243,1808,1829]" captionTargetBox="[161,1426,209,1774]" captionTargetId="figure-14@5.[151,1436,190,1783]" captionTargetPageId="5" captionText="FIGURES 38–42. Platessa guianensis sp. nov., type material from French Guiana SEM. 38. External view of the RSV showing the raphe sternum features, the biseriate striae, the concavity of the valve and the discontinuous row of elongated “poroids” on the mantle. 39. Detail of the proximal raphe ending surrounded by a groove (arrow). 40. Detail of the distal raphe ending with delta-shaped groove with angular outline (arrow) and discontinuity of the mantle “poroids”. 41. Internal view of the RSV showing the raphe sternum features with proximal raphe endings deflected in opposite directions, slightly deflected distal raphe endings, tiny helictoglossae. 42. Ultrastructural detail of the internal aperture of the areola (cribrum) and inner view of poroid (arrow)." figureDoi="http://doi.org/10.5281/zenodo.13667178" httpUri="https://zenodo.org/record/13667178/files/figure.png" pageId="4" pageNumber="241">Figs 40</figureCitation>
, 
<figureCitation id="B9B52CE3FFD7810AFD2F53566B08FE0B" box="[764,788,376,397]" captionStart="FIGURES 46–71" captionStartId="7.[136,243,1854,1875]" captionTargetBox="[169,1426,207,1821]" captionTargetId="figure-14@7.[151,1436,190,1829]" captionTargetPageId="7" captionText="FIGURES 46–71. Platessa guianensis sp. nov. from Rio Negro basin (Brazilian Amazon), LM and SEM. 46–55: sternum valve. 56–64: raphe sternum valve. 65, 67, 69, 71. External views. 66, 68, 70. Internal views. Note the internal row of tiny marginal poroids (Figs 66, 68, arrows) and grooves on the raphe branches (Fig. 67, arrow). 46–68: Sample SP-400. 274, Rio Negro, Brazilian Amazon. 69–71 Sample SP-400.315, Rio Negro, Brazilian Amazon." figureDoi="http://doi.org/10.5281/zenodo.13667190" httpUri="https://zenodo.org/record/13667190/files/figure.png" pageId="4" pageNumber="241">67</figureCitation>
arrows). Internally raphe branches with proximal endings deflected in opposite direction and distal endings slightly curved to opposite sides and terminating in poorly developed helictoglossae (
<figureCitation id="B9B52CE3FFD7810AFA5153B268CBFE53" captionStart="FIGURES 38–42" captionStartId="5.[136,243,1808,1829]" captionTargetBox="[161,1426,209,1774]" captionTargetId="figure-14@5.[151,1436,190,1783]" captionTargetPageId="5" captionText="FIGURES 38–42. Platessa guianensis sp. nov., type material from French Guiana SEM. 38. External view of the RSV showing the raphe sternum features, the biseriate striae, the concavity of the valve and the discontinuous row of elongated “poroids” on the mantle. 39. Detail of the proximal raphe ending surrounded by a groove (arrow). 40. Detail of the distal raphe ending with delta-shaped groove with angular outline (arrow) and discontinuity of the mantle “poroids”. 41. Internal view of the RSV showing the raphe sternum features with proximal raphe endings deflected in opposite directions, slightly deflected distal raphe endings, tiny helictoglossae. 42. Ultrastructural detail of the internal aperture of the areola (cribrum) and inner view of poroid (arrow)." figureDoi="http://doi.org/10.5281/zenodo.13667178" httpUri="https://zenodo.org/record/13667178/files/figure.png" pageId="4" pageNumber="241">Figs 41</figureCitation>
, 
<figureCitation id="B9B52CE3FFD7810AFF3753EE68E3FE53" box="[228,255,448,469]" captionStart="FIGURES 43–45" captionStartId="6.[136,243,1948,1969]" captionTargetBox="[207,1387,209,1913]" captionTargetId="figure-16@6.[190,1398,190,1923]" captionTargetPageId="6" captionText="FIGURES 43–45. Platessa guianensis sp. nov., type material from French Guiana SEM. 43. External view of the SV with tiny depressions in the axial area, elongated poroids on the mantle located in a groove. Notches (arrows). 44. Complete frustule showing internal view of the RSV and internal view of the SV, the open copulae, the valvocopula and the notches (arrow). 45. Internal view of the SV with trace of vestigial raphe (arrow)." figureDoi="http://doi.org/10.5281/zenodo.13667184" httpUri="https://zenodo.org/record/13667184/files/figure.png" pageId="4" pageNumber="241">44</figureCitation>
). Central striae clearly sunken between raised virgae (
<figureCitation id="B9B52CE3FFD7810AFCCB53EE6B79FE53" box="[792,869,448,469]" captionStart="FIGURES 38–42" captionStartId="5.[136,243,1808,1829]" captionTargetBox="[161,1426,209,1774]" captionTargetId="figure-14@5.[151,1436,190,1783]" captionTargetPageId="5" captionText="FIGURES 38–42. Platessa guianensis sp. nov., type material from French Guiana SEM. 38. External view of the RSV showing the raphe sternum features, the biseriate striae, the concavity of the valve and the discontinuous row of elongated “poroids” on the mantle. 39. Detail of the proximal raphe ending surrounded by a groove (arrow). 40. Detail of the distal raphe ending with delta-shaped groove with angular outline (arrow) and discontinuity of the mantle “poroids”. 41. Internal view of the RSV showing the raphe sternum features with proximal raphe endings deflected in opposite directions, slightly deflected distal raphe endings, tiny helictoglossae. 42. Ultrastructural detail of the internal aperture of the areola (cribrum) and inner view of poroid (arrow)." figureDoi="http://doi.org/10.5281/zenodo.13667178" httpUri="https://zenodo.org/record/13667178/files/figure.png" pageId="4" pageNumber="241">Figs 41</figureCitation>
, 
<figureCitation id="B9B52CE3FFD7810AFCA153EE6B91FE53" box="[882,909,448,469]" captionStart="FIGURES 46–71" captionStartId="7.[136,243,1854,1875]" captionTargetBox="[169,1426,207,1821]" captionTargetId="figure-14@7.[151,1436,190,1829]" captionTargetPageId="7" captionText="FIGURES 46–71. Platessa guianensis sp. nov. from Rio Negro basin (Brazilian Amazon), LM and SEM. 46–55: sternum valve. 56–64: raphe sternum valve. 65, 67, 69, 71. External views. 66, 68, 70. Internal views. Note the internal row of tiny marginal poroids (Figs 66, 68, arrows) and grooves on the raphe branches (Fig. 67, arrow). 46–68: Sample SP-400. 274, Rio Negro, Brazilian Amazon. 69–71 Sample SP-400.315, Rio Negro, Brazilian Amazon." figureDoi="http://doi.org/10.5281/zenodo.13667190" httpUri="https://zenodo.org/record/13667190/files/figure.png" pageId="4" pageNumber="241">68</figureCitation>
). A very shallow depression is observed on the central nodule between the proximal raphe endings (
<figureCitation id="B9B52CE3FFD7810AFDA853CA6AD4FE7F" box="[635,712,484,505]" captionStart="FIGURES 38–42" captionStartId="5.[136,243,1808,1829]" captionTargetBox="[161,1426,209,1774]" captionTargetId="figure-14@5.[151,1436,190,1783]" captionTargetPageId="5" captionText="FIGURES 38–42. Platessa guianensis sp. nov., type material from French Guiana SEM. 38. External view of the RSV showing the raphe sternum features, the biseriate striae, the concavity of the valve and the discontinuous row of elongated “poroids” on the mantle. 39. Detail of the proximal raphe ending surrounded by a groove (arrow). 40. Detail of the distal raphe ending with delta-shaped groove with angular outline (arrow) and discontinuity of the mantle “poroids”. 41. Internal view of the RSV showing the raphe sternum features with proximal raphe endings deflected in opposite directions, slightly deflected distal raphe endings, tiny helictoglossae. 42. Ultrastructural detail of the internal aperture of the areola (cribrum) and inner view of poroid (arrow)." figureDoi="http://doi.org/10.5281/zenodo.13667178" httpUri="https://zenodo.org/record/13667178/files/figure.png" pageId="4" pageNumber="241">Figs 41</figureCitation>
, 
<figureCitation id="B9B52CE3FFD7810AFD0753CA6AF3FE7F" box="[724,751,484,505]" captionStart="FIGURES 46–71" captionStartId="7.[136,243,1854,1875]" captionTargetBox="[169,1426,207,1821]" captionTargetId="figure-14@7.[151,1436,190,1829]" captionTargetPageId="7" captionText="FIGURES 46–71. Platessa guianensis sp. nov. from Rio Negro basin (Brazilian Amazon), LM and SEM. 46–55: sternum valve. 56–64: raphe sternum valve. 65, 67, 69, 71. External views. 66, 68, 70. Internal views. Note the internal row of tiny marginal poroids (Figs 66, 68, arrows) and grooves on the raphe branches (Fig. 67, arrow). 46–68: Sample SP-400. 274, Rio Negro, Brazilian Amazon. 69–71 Sample SP-400.315, Rio Negro, Brazilian Amazon." figureDoi="http://doi.org/10.5281/zenodo.13667190" httpUri="https://zenodo.org/record/13667190/files/figure.png" pageId="4" pageNumber="241">68</figureCitation>
). SV slightly convex (
<figureCitation id="B9B52CE3FFD7810AFC1D53CA6C5EFE7F" box="[974,1090,484,505]" captionStart="FIGURES 43–45" captionStartId="6.[136,243,1948,1969]" captionTargetBox="[207,1387,209,1913]" captionTargetId="figure-16@6.[190,1398,190,1923]" captionTargetPageId="6" captionText="FIGURES 43–45. Platessa guianensis sp. nov., type material from French Guiana SEM. 43. External view of the SV with tiny depressions in the axial area, elongated poroids on the mantle located in a groove. Notches (arrows). 44. Complete frustule showing internal view of the RSV and internal view of the SV, the open copulae, the valvocopula and the notches (arrow). 45. Internal view of the SV with trace of vestigial raphe (arrow)." figureDoi="http://doi.org/10.5281/zenodo.13667184" httpUri="https://zenodo.org/record/13667184/files/figure.png" pageId="4" pageNumber="241">Figs 43−44</figureCitation>
). Externally, axial area covered with numerous scattered depressions (around 0.5 μm diameter) irregularly distributed on the surface (
<figureCitation id="B9B52CE3FFD7810AFBA550266CF5FD9B" box="[1142,1257,520,541]" captionStart="FIGURES 43–45" captionStartId="6.[136,243,1948,1969]" captionTargetBox="[207,1387,209,1913]" captionTargetId="figure-16@6.[190,1398,190,1923]" captionTargetPageId="6" captionText="FIGURES 43–45. Platessa guianensis sp. nov., type material from French Guiana SEM. 43. External view of the SV with tiny depressions in the axial area, elongated poroids on the mantle located in a groove. Notches (arrows). 44. Complete frustule showing internal view of the RSV and internal view of the SV, the open copulae, the valvocopula and the notches (arrow). 45. Internal view of the SV with trace of vestigial raphe (arrow)." figureDoi="http://doi.org/10.5281/zenodo.13667184" httpUri="https://zenodo.org/record/13667184/files/figure.png" pageId="4" pageNumber="241">Figs 43, 44</figureCitation>
, 
<figureCitation id="B9B52CE3FFD7810AFB2650266D2AFD9B" box="[1269,1334,520,541]" captionStart="FIGURES 46–71" captionStartId="7.[136,243,1854,1875]" captionTargetBox="[169,1426,207,1821]" captionTargetId="figure-14@7.[151,1436,190,1829]" captionTargetPageId="7" captionText="FIGURES 46–71. Platessa guianensis sp. nov. from Rio Negro basin (Brazilian Amazon), LM and SEM. 46–55: sternum valve. 56–64: raphe sternum valve. 65, 67, 69, 71. External views. 66, 68, 70. Internal views. Note the internal row of tiny marginal poroids (Figs 66, 68, arrows) and grooves on the raphe branches (Fig. 67, arrow). 46–68: Sample SP-400. 274, Rio Negro, Brazilian Amazon. 69–71 Sample SP-400.315, Rio Negro, Brazilian Amazon." figureDoi="http://doi.org/10.5281/zenodo.13667190" httpUri="https://zenodo.org/record/13667190/files/figure.png" pageId="4" pageNumber="241">65, 69</figureCitation>
). Internally, trace of vestigial raphe (
<figureCitation id="B9B52CE3FFD7810AFE7D500269EBFDC7" box="[430,503,556,577]" captionStart="FIGURES 43–45" captionStartId="6.[136,243,1948,1969]" captionTargetBox="[207,1387,209,1913]" captionTargetId="figure-16@6.[190,1398,190,1923]" captionTargetPageId="6" captionText="FIGURES 43–45. Platessa guianensis sp. nov., type material from French Guiana SEM. 43. External view of the SV with tiny depressions in the axial area, elongated poroids on the mantle located in a groove. Notches (arrows). 44. Complete frustule showing internal view of the RSV and internal view of the SV, the open copulae, the valvocopula and the notches (arrow). 45. Internal view of the SV with trace of vestigial raphe (arrow)." figureDoi="http://doi.org/10.5281/zenodo.13667184" httpUri="https://zenodo.org/record/13667184/files/figure.png" pageId="4" pageNumber="241">Fig. 45</figureCitation>
, arrow) generally present. On both valves, striae biseriate composed of offset areolae relative to each other and separated by a strongly silicified vimines (
<figureCitation id="B9B52CE3FFD7810AFD3A507E6B46FDE3" box="[745,858,592,613]" captionStart-0="FIGURES 38–42" captionStart-1="FIGURES 43–45" captionStartId-0="5.[136,243,1808,1829]" captionStartId-1="6.[136,243,1948,1969]" captionTargetBox-0="[161,1426,209,1774]" captionTargetBox-1="[207,1387,209,1913]" captionTargetId-0="figure-14@5.[151,1436,190,1783]" captionTargetId-1="figure-16@6.[190,1398,190,1923]" captionTargetPageId-0="5" captionTargetPageId-1="6" captionText-0="FIGURES 38–42. Platessa guianensis sp. nov., type material from French Guiana SEM. 38. External view of the RSV showing the raphe sternum features, the biseriate striae, the concavity of the valve and the discontinuous row of elongated “poroids” on the mantle. 39. Detail of the proximal raphe ending surrounded by a groove (arrow). 40. Detail of the distal raphe ending with delta-shaped groove with angular outline (arrow) and discontinuity of the mantle “poroids”. 41. Internal view of the RSV showing the raphe sternum features with proximal raphe endings deflected in opposite directions, slightly deflected distal raphe endings, tiny helictoglossae. 42. Ultrastructural detail of the internal aperture of the areola (cribrum) and inner view of poroid (arrow)." captionText-1="FIGURES 43–45. Platessa guianensis sp. nov., type material from French Guiana SEM. 43. External view of the SV with tiny depressions in the axial area, elongated poroids on the mantle located in a groove. Notches (arrows). 44. Complete frustule showing internal view of the RSV and internal view of the SV, the open copulae, the valvocopula and the notches (arrow). 45. Internal view of the SV with trace of vestigial raphe (arrow)." figureDoi-0="http://doi.org/10.5281/zenodo.13667178" figureDoi-1="http://doi.org/10.5281/zenodo.13667184" httpUri-0="https://zenodo.org/record/13667178/files/figure.png" httpUri-1="https://zenodo.org/record/13667184/files/figure.png" pageId="4" pageNumber="241">Figs 38−45</figureCitation>
, 
<figureCitation id="B9B52CE3FFD7810AFCB7507E6BB9FDE3" box="[868,933,592,613]" captionStart="FIGURES 46–71" captionStartId="7.[136,243,1854,1875]" captionTargetBox="[169,1426,207,1821]" captionTargetId="figure-14@7.[151,1436,190,1829]" captionTargetPageId="7" captionText="FIGURES 46–71. Platessa guianensis sp. nov. from Rio Negro basin (Brazilian Amazon), LM and SEM. 46–55: sternum valve. 56–64: raphe sternum valve. 65, 67, 69, 71. External views. 66, 68, 70. Internal views. Note the internal row of tiny marginal poroids (Figs 66, 68, arrows) and grooves on the raphe branches (Fig. 67, arrow). 46–68: Sample SP-400. 274, Rio Negro, Brazilian Amazon. 69–71 Sample SP-400.315, Rio Negro, Brazilian Amazon." figureDoi="http://doi.org/10.5281/zenodo.13667190" httpUri="https://zenodo.org/record/13667190/files/figure.png" pageId="4" pageNumber="241">65−71</figureCitation>
). Internally, areolae occluded by a cribrum perforated by delicate slits (
<figureCitation id="B9B52CE3FFD7810AFEB0505A69B2FD0F" box="[355,430,628,649]" captionStart="FIGURES 38–42" captionStartId="5.[136,243,1808,1829]" captionTargetBox="[161,1426,209,1774]" captionTargetId="figure-14@5.[151,1436,190,1783]" captionTargetPageId="5" captionText="FIGURES 38–42. Platessa guianensis sp. nov., type material from French Guiana SEM. 38. External view of the RSV showing the raphe sternum features, the biseriate striae, the concavity of the valve and the discontinuous row of elongated “poroids” on the mantle. 39. Detail of the proximal raphe ending surrounded by a groove (arrow). 40. Detail of the distal raphe ending with delta-shaped groove with angular outline (arrow) and discontinuity of the mantle “poroids”. 41. Internal view of the RSV showing the raphe sternum features with proximal raphe endings deflected in opposite directions, slightly deflected distal raphe endings, tiny helictoglossae. 42. Ultrastructural detail of the internal aperture of the areola (cribrum) and inner view of poroid (arrow)." figureDoi="http://doi.org/10.5281/zenodo.13667178" httpUri="https://zenodo.org/record/13667178/files/figure.png" pageId="4" pageNumber="241">Fig. 42</figureCitation>
). Externally, on both valves, narrow hyaline area all around the valve separating the biseriate striae from elongated “poroids” located in a continuous groove on the mantle (
<figureCitation id="B9B52CE3FFD7810AFCE850B66B99FD2B" box="[827,901,664,685]" captionStart="FIGURES 38–42" captionStartId="5.[136,243,1808,1829]" captionTargetBox="[161,1426,209,1774]" captionTargetId="figure-14@5.[151,1436,190,1783]" captionTargetPageId="5" captionText="FIGURES 38–42. Platessa guianensis sp. nov., type material from French Guiana SEM. 38. External view of the RSV showing the raphe sternum features, the biseriate striae, the concavity of the valve and the discontinuous row of elongated “poroids” on the mantle. 39. Detail of the proximal raphe ending surrounded by a groove (arrow). 40. Detail of the distal raphe ending with delta-shaped groove with angular outline (arrow) and discontinuity of the mantle “poroids”. 41. Internal view of the RSV showing the raphe sternum features with proximal raphe endings deflected in opposite directions, slightly deflected distal raphe endings, tiny helictoglossae. 42. Ultrastructural detail of the internal aperture of the areola (cribrum) and inner view of poroid (arrow)." figureDoi="http://doi.org/10.5281/zenodo.13667178" httpUri="https://zenodo.org/record/13667178/files/figure.png" pageId="4" pageNumber="241">Figs 38</figureCitation>
, 
<figureCitation id="B9B52CE3FFD7810AFC5D50B66BD1FD2B" box="[910,973,664,685]" captionStart="FIGURES 43–45" captionStartId="6.[136,243,1948,1969]" captionTargetBox="[207,1387,209,1913]" captionTargetId="figure-16@6.[190,1398,190,1923]" captionTargetPageId="6" captionText="FIGURES 43–45. Platessa guianensis sp. nov., type material from French Guiana SEM. 43. External view of the SV with tiny depressions in the axial area, elongated poroids on the mantle located in a groove. Notches (arrows). 44. Complete frustule showing internal view of the RSV and internal view of the SV, the open copulae, the valvocopula and the notches (arrow). 45. Internal view of the SV with trace of vestigial raphe (arrow)." figureDoi="http://doi.org/10.5281/zenodo.13667184" httpUri="https://zenodo.org/record/13667184/files/figure.png" pageId="4" pageNumber="241">43, 44</figureCitation>
), which can be inconspicuous or irregular in some specimens (
<figureCitation id="B9B52CE3FFD7810AFEFC50926981FD57" box="[303,413,700,721]" captionStart="FIGURES 46–71" captionStartId="7.[136,243,1854,1875]" captionTargetBox="[169,1426,207,1821]" captionTargetId="figure-14@7.[151,1436,190,1829]" captionTargetPageId="7" captionText="FIGURES 46–71. Platessa guianensis sp. nov. from Rio Negro basin (Brazilian Amazon), LM and SEM. 46–55: sternum valve. 56–64: raphe sternum valve. 65, 67, 69, 71. External views. 66, 68, 70. Internal views. Note the internal row of tiny marginal poroids (Figs 66, 68, arrows) and grooves on the raphe branches (Fig. 67, arrow). 46–68: Sample SP-400. 274, Rio Negro, Brazilian Amazon. 69–71 Sample SP-400.315, Rio Negro, Brazilian Amazon." figureDoi="http://doi.org/10.5281/zenodo.13667190" httpUri="https://zenodo.org/record/13667190/files/figure.png" pageId="4" pageNumber="241">Figs 65, 68</figureCitation>
arrows). External “poroids” continuous on SV (
<figureCitation id="B9B52CE3FFD7810AFCA350926BFDFD57" box="[880,993,700,721]" captionStart="FIGURES 43–45" captionStartId="6.[136,243,1948,1969]" captionTargetBox="[207,1387,209,1913]" captionTargetId="figure-16@6.[190,1398,190,1923]" captionTargetPageId="6" captionText="FIGURES 43–45. Platessa guianensis sp. nov., type material from French Guiana SEM. 43. External view of the SV with tiny depressions in the axial area, elongated poroids on the mantle located in a groove. Notches (arrows). 44. Complete frustule showing internal view of the RSV and internal view of the SV, the open copulae, the valvocopula and the notches (arrow). 45. Internal view of the SV with trace of vestigial raphe (arrow)." figureDoi="http://doi.org/10.5281/zenodo.13667184" httpUri="https://zenodo.org/record/13667184/files/figure.png" pageId="4" pageNumber="241">Figs 43, 44</figureCitation>
), discontinuous in the RSV (missing poroids at the apices, 
<figureCitation id="B9B52CE3FFD7810AFEF950CE6987FD73" box="[298,411,736,757]" captionStart="FIGURES 38–42" captionStartId="5.[136,243,1808,1829]" captionTargetBox="[161,1426,209,1774]" captionTargetId="figure-14@5.[151,1436,190,1783]" captionTargetPageId="5" captionText="FIGURES 38–42. Platessa guianensis sp. nov., type material from French Guiana SEM. 38. External view of the RSV showing the raphe sternum features, the biseriate striae, the concavity of the valve and the discontinuous row of elongated “poroids” on the mantle. 39. Detail of the proximal raphe ending surrounded by a groove (arrow). 40. Detail of the distal raphe ending with delta-shaped groove with angular outline (arrow) and discontinuity of the mantle “poroids”. 41. Internal view of the RSV showing the raphe sternum features with proximal raphe endings deflected in opposite directions, slightly deflected distal raphe endings, tiny helictoglossae. 42. Ultrastructural detail of the internal aperture of the areola (cribrum) and inner view of poroid (arrow)." figureDoi="http://doi.org/10.5281/zenodo.13667178" httpUri="https://zenodo.org/record/13667178/files/figure.png" pageId="4" pageNumber="241">Figs 38, 40</figureCitation>
). Internally, at the marginal end of each striae, presence of a very tiny “outgrowth” surrounded by a groove and structurally different from the areolae (
<figureCitation id="B9B52CE3FFD7810AFD8F512A6ABFFC9F" box="[604,675,772,793]" captionStart="FIGURES 38–42" captionStartId="5.[136,243,1808,1829]" captionTargetBox="[161,1426,209,1774]" captionTargetId="figure-14@5.[151,1436,190,1783]" captionTargetPageId="5" captionText="FIGURES 38–42. Platessa guianensis sp. nov., type material from French Guiana SEM. 38. External view of the RSV showing the raphe sternum features, the biseriate striae, the concavity of the valve and the discontinuous row of elongated “poroids” on the mantle. 39. Detail of the proximal raphe ending surrounded by a groove (arrow). 40. Detail of the distal raphe ending with delta-shaped groove with angular outline (arrow) and discontinuity of the mantle “poroids”. 41. Internal view of the RSV showing the raphe sternum features with proximal raphe endings deflected in opposite directions, slightly deflected distal raphe endings, tiny helictoglossae. 42. Ultrastructural detail of the internal aperture of the areola (cribrum) and inner view of poroid (arrow)." figureDoi="http://doi.org/10.5281/zenodo.13667178" httpUri="https://zenodo.org/record/13667178/files/figure.png" pageId="4" pageNumber="241">Fig. 42</figureCitation>
, arrow). Notches present on both valves (
<figureCitation id="B9B52CE3FFD7810AFBE2512A6C60FC9F" box="[1073,1148,772,793]" captionStart="FIGURES 38–42" captionStartId="5.[136,243,1808,1829]" captionTargetBox="[161,1426,209,1774]" captionTargetId="figure-14@5.[151,1436,190,1783]" captionTargetPageId="5" captionText="FIGURES 38–42. Platessa guianensis sp. nov., type material from French Guiana SEM. 38. External view of the RSV showing the raphe sternum features, the biseriate striae, the concavity of the valve and the discontinuous row of elongated “poroids” on the mantle. 39. Detail of the proximal raphe ending surrounded by a groove (arrow). 40. Detail of the distal raphe ending with delta-shaped groove with angular outline (arrow) and discontinuity of the mantle “poroids”. 41. Internal view of the RSV showing the raphe sternum features with proximal raphe endings deflected in opposite directions, slightly deflected distal raphe endings, tiny helictoglossae. 42. Ultrastructural detail of the internal aperture of the areola (cribrum) and inner view of poroid (arrow)." figureDoi="http://doi.org/10.5281/zenodo.13667178" httpUri="https://zenodo.org/record/13667178/files/figure.png" pageId="4" pageNumber="241">Figs 41</figureCitation>
, 
<figureCitation id="B9B52CE3FFD7810AFB55512A6CD8FC9F" box="[1158,1220,772,793]" captionStart="FIGURES 43–45" captionStartId="6.[136,243,1948,1969]" captionTargetBox="[207,1387,209,1913]" captionTargetId="figure-16@6.[190,1398,190,1923]" captionTargetPageId="6" captionText="FIGURES 43–45. Platessa guianensis sp. nov., type material from French Guiana SEM. 43. External view of the SV with tiny depressions in the axial area, elongated poroids on the mantle located in a groove. Notches (arrows). 44. Complete frustule showing internal view of the RSV and internal view of the SV, the open copulae, the valvocopula and the notches (arrow). 45. Internal view of the SV with trace of vestigial raphe (arrow)." figureDoi="http://doi.org/10.5281/zenodo.13667184" httpUri="https://zenodo.org/record/13667184/files/figure.png" pageId="4" pageNumber="241">43, 44</figureCitation>
, arrows).
</paragraph>
</subSubSection>
<subSubSection id="699463EDFFD7810AFF5B51066C4CF89C" pageId="4" pageNumber="241" type="materials_examined">
<paragraph id="21313066FFD7810AFF5B51066CF8FC03" blockId="4.[136,1452,160,901]" pageId="4" pageNumber="241">
<emphasis id="13FAEC74FFD7810AFF5B510668DEFCBB" bold="true" box="[136,194,808,829]" pageId="4" pageNumber="241">Type:</emphasis>
— 
<materialsCitation id="91E63A3BFFD7810AFF0951066C92FC03" collectingDate="2011-11" collectionCode="ANSP" country="French Guiana" county="Academy of Natural Sciences" latitude="3.572" location="River Nouvelle-France" longLatPrecision="78" longitude="-53.201" municipality="France" pageId="4" pageNumber="241" specimenCode="GC 26825, GCM 10311" specimenCount="2" typeStatus="holotype">
<collectingCountry id="599970F6FFD7810AFF09510669BFFCBB" box="[218,419,808,829]" name="French Guiana" pageId="4" pageNumber="241">FRENCH GUIANA</collectingCountry>
. 
<location id="245166BDFFD7810AFE7D51066A8DFCBB" LSID="urn:lsid:plazi:treatment:A9278170FFD08106FF5B55496C6DFE7B:245166BDFFD7810AFE7D51066A8DFCBB" box="[430,657,808,829]" country="French Guiana" county="Academy of Natural Sciences" latitude="3.572" longLatPrecision="78" longitude="-53.201" municipality="France" name="River Nouvelle-France" pageId="4" pageNumber="241">River Nouvelle-France</location>
: municipality of 
<location id="245166BDFFD7810AFCE851066B74FCBB" LSID="urn:lsid:plazi:treatment:A9278170FFD08106FF5B55496C6DFE7B:245166BDFFD7810AFCE851066B74FCBB" box="[827,872,808,829]" country="French Guiana" county="Academy of Natural Sciences" latitude="3.572" longLatPrecision="78" longitude="-53.201" municipality="France" name="Saul" pageId="4" pageNumber="241">Saül</location>
, 
<geoCoordinate id="44BA56A1FFD7810AFCA751066BD3FCBB" box="[884,975,808,829]" degrees="3.572" direction="north" orientation="latitude" pageId="4" pageNumber="241" precision="55" value="3.572">3.572° N</geoCoordinate>
, 
<geoCoordinate id="44BA56A1FFD7810AFC0F51066C5AFCBB" box="[988,1094,808,829]" degrees="53.201" direction="west" orientation="longitude" pageId="4" pageNumber="241" precision="55" value="-53.201">53.201° W</geoCoordinate>
, benthic periphyton, 
<emphasis id="13FAEC74FFD7810AFACB5106694FFCE7" italics="true" pageId="4" pageNumber="241">
<location id="245166BDFFD7810AFACB51066DB4FCBB" LSID="urn:lsid:plazi:treatment:A9278170FFD08106FF5B55496C6DFE7B:245166BDFFD7810AFACB51066DB4FCBB" box="[1304,1448,808,829]" country="French Guiana" county="Academy of Natural Sciences" latitude="3.572" longLatPrecision="78" longitude="-53.201" municipality="France" name="Loic Tudesque" pageId="4" pageNumber="241">Loïc Tudesque</location>
, 
<date id="553016A6FFD7810AFF6E5162694FFCE7" box="[189,339,844,865]" pageId="4" pageNumber="241" value="2011-11">
<collectingDate id="4574EF4EFFD7810AFF6E5162694FFCE7" box="[189,339,844,865]" pageId="4" pageNumber="241" value="2011-11">November 2011</collectingDate>
</date>
</emphasis>
(
<typeStatus id="FE358EC4FFD7810AFEB3516269A5FCE7" box="[352,441,844,865]" pageId="4" pageNumber="241" type="holotype">holotype</typeStatus>
: PC! 00145186, 
<location id="245166BDFFD7810AFD8451626C00FCE7" LSID="urn:lsid:plazi:treatment:A9278170FFD08106FF5B55496C6DFE7B:245166BDFFD7810AFD8451626C00FCE7" box="[599,1052,844,865]" country="French Guiana" county="Academy of Natural Sciences" latitude="3.572" longLatPrecision="78" longitude="-53.201" municipality="France" name="Museum National d'Histoire Naturelle de Paris" pageId="4" pageNumber="241">Muséum National d’Histoire Naturelle de Paris</location>
, 
<location id="245166BDFFD7810AFBF651626C4BFCE7" LSID="urn:lsid:plazi:treatment:A9278170FFD08106FF5B55496C6DFE7B:245166BDFFD7810AFBF651626C4BFCE7" box="[1061,1111,844,865]" country="French Guiana" county="Academy of Natural Sciences" latitude="3.572" longLatPrecision="78" longitude="-53.201" municipality="France" name="Paris" pageId="4" pageNumber="241">Paris</location>
, 
<collectingMunicipality id="C155AA1CFFD7810AFBB251626CB9FCE7" box="[1121,1189,844,865]" pageId="4" pageNumber="241">France</collectingMunicipality>
; 
<typeStatus id="FE358EC4FFD7810AFB7D51626CEBFCE7" box="[1198,1271,844,865]" pageId="4" pageNumber="241" type="isotype">isotype</typeStatus>
: 
<collectionCode id="479FA8A3FFD7810AFB2D51626D5CFCE7" box="[1278,1344,844,865]" 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="4" pageNumber="241">ANSP</collectionCode>
! 
<specimenCode id="7128981DFFD7810AFA9A51626DB7FCE7" box="[1353,1451,844,865]" collectionCode="GC" country="0" name="Goucher College" pageId="4" pageNumber="241">GC 26825</specimenCode>
and raw material 
<specimenCode id="7128981DFFD7810AFEB6515E69C2FC03" box="[357,478,880,901]" collectionCode="GCM" country="Pakistan" httpUri="http://grbio.org/cool/6cg4-m6r9" name="Government College, Department of Zoology" pageId="4" pageNumber="241">GCM 10311</specimenCode>
, the algae collection of the 
<collectingCounty id="C85048EAFFD7810AFD36515E6C19FC03" box="[741,1029,880,901]" pageId="4" pageNumber="241">Academy of Natural Sciences</collectingCounty>
, Philadelphia,
</materialsCitation>
<collectingCountry id="599970F6FFD7810AFB40515E6CC4FC03" box="[1171,1240,880,901]" name="United States of America" pageId="4" pageNumber="241">U.S.A.</collectingCountry>
).
</paragraph>
<caption id="75F160EEFFD7810AFF5B54B66A5DF957" ID-DOI="http://doi.org/10.5281/zenodo.13667174" ID-Zenodo-Dep="13667174" httpUri="https://zenodo.org/record/13667174/files/figure.png" pageId="4" pageNumber="241" startId="4.[136,243,1688,1709]" targetBox="[166,1424,941,1647]" targetPageId="4" targetType="figure">
<paragraph id="21313066FFD7810AFF5B54B66A5DF957" blockId="4.[136,1452,1688,1745]" pageId="4" pageNumber="241">
<emphasis id="13FAEC74FFD7810AFF5B54B66932F92B" bold="true" box="[136,302,1688,1709]" pageId="4" pageNumber="241">FIGURES 2–37.</emphasis>
<taxonomicName id="E68E4BE5FFD7810AFEE054B669EDF92B" authorityName="Tudesque &amp; Cohu &amp; Wetzel" authorityYear="2016" box="[307,497,1688,1709]" class="Bacillariophyceae" family="Achnanthaceae" genus="Platessa" higherTaxonomySource="GBIF" kingdom="Chromista" order="Achnanthales" pageId="4" pageNumber="241" phylum="Bacillariophyta" rank="species" species="guianensis" status="sp. nov.">
<emphasis id="13FAEC74FFD7810AFEE054B669EDF92B" box="[307,497,1688,1709]" italics="true" pageId="4" pageNumber="241">Platessa guianensis</emphasis>
</taxonomicName>
<taxonomicNameLabel id="08C9510FFFD7810AFE2654B66A21F92B" box="[501,573,1688,1709]" pageId="4" pageNumber="241" rank="species">
<emphasis id="13FAEC74FFD7810AFE2654B66A16F92B" box="[501,522,1688,1709]" italics="true" pageId="4" pageNumber="241">sp</emphasis>
. 
<emphasis id="13FAEC74FFD7810AFDC554B66A25F92B" box="[534,569,1688,1709]" italics="true" pageId="4" pageNumber="241">nov</emphasis>
.
</taxonomicNameLabel>
, type material from French Guiana, LM, range of size. 2–13, 14a–25a. Raphe sternum valve (RSV). 14b–25b, 26–37. Sternum valve (SV).
</paragraph>
</caption>
<paragraph id="21313066FFD7810AFF5B552F6C4CF89C" blockId="4.[136,1452,1793,2070]" box="[136,1104,1793,1818]" pageId="4" pageNumber="241">
<emphasis id="13FAEC74FFD7810AFF5B552F68F8F89C" bold="true" box="[136,228,1793,1818]" pageId="4" pageNumber="241">Habitat</emphasis>
:—freshwater periphyton from tropical and subtropical moist broadleaf forest.
</paragraph>
</subSubSection>
<subSubSection id="699463EDFFD7810AFF6E550B6CFFF790" pageId="4" pageNumber="241" type="etymology">
<paragraph id="21313066FFD7810AFF6E550B6C1CF8B8" blockId="4.[136,1452,1793,2070]" box="[189,1024,1829,1854]" pageId="4" pageNumber="241">
<emphasis id="13FAEC74FFD7810AFF6E550B6922F8B8" bold="true" box="[189,318,1829,1854]" pageId="4" pageNumber="241">Etymology</emphasis>
:—in reference to the location where this species was sampled.
</paragraph>
<paragraph id="21313066FFD7810AFF6E55676CFFF790" blockId="4.[136,1452,1793,2070]" pageId="4" pageNumber="241">
<emphasis id="13FAEC74FFD7810AFF6E55676929F8E4" bold="true" box="[189,309,1865,1890]" pageId="4" pageNumber="241">
<typeStatus id="FE358EC4FFD7810AFF6E55676929F8E4" box="[189,309,1865,1890]" pageId="4" pageNumber="241" type="paratype">Paratypes</typeStatus>
</emphasis>
:— 
<collectingCountry id="599970F6FFD7810AFE84556769DEF8E4" box="[343,450,1865,1890]" name="Brazil" pageId="4" pageNumber="241">BRAZIL</collectingCountry>
. 
<collectingRegion id="E34AFE84FFD7810AFE1E55676A54F8E4" box="[461,584,1865,1890]" country="Brazil" name="Amazonas" pageId="4" pageNumber="241">Amazonas</collectingRegion>
: Barcelos Municipality, Quimicuri river (‘igapó’), a tributary from the right bank of the Rio Negro hydrographical basin (
<geoCoordinate id="44BA56A1FFD7810AFD5B55436AE6F800" box="[648,762,1901,1926]" degrees="0.6935" direction="south" orientation="latitude" pageId="4" pageNumber="241" precision="5" value="-0.6935">0.6935° S</geoCoordinate>
, 
<geoCoordinate id="44BA56A1FFD7810AFCD455436BBDF800" box="[775,929,1901,1926]" degrees="63.20964" direction="west" orientation="longitude" pageId="4" pageNumber="241" precision="1" value="-63.20964">63.20964° W</geoCoordinate>
), phytoplankton sample, 
<emphasis id="13FAEC74FFD7810AFB6F55436CD3F800" box="[1212,1231,1901,1926]" italics="true" pageId="4" pageNumber="241">C</emphasis>
. 
<emphasis id="13FAEC74FFD7810AFB0555436CFBF800" box="[1238,1255,1901,1926]" italics="true" pageId="4" pageNumber="241">E</emphasis>
. 
<emphasis id="13FAEC74FFD7810AFB2555436D22F800" box="[1270,1342,1901,1926]" italics="true" pageId="4" pageNumber="241">Wetzel</emphasis>
, 
<emphasis id="13FAEC74FFD7810AFA9F554368DCF82C" italics="true" pageId="4" pageNumber="241">
<date id="553016A6FFD7810AFA9F554368DCF82C" pageId="4" pageNumber="241" value="2005-03-02">2 March 2005</date>
</emphasis>
(
<figureCitation id="B9B52CE3FFD7810AFF1D55BF694DF82C" box="[206,337,1937,1962]" captionStart="FIGURES 46–71" captionStartId="7.[136,243,1854,1875]" captionTargetBox="[169,1426,207,1821]" captionTargetId="figure-14@7.[151,1436,190,1829]" captionTargetPageId="7" captionText="FIGURES 46–71. Platessa guianensis sp. nov. from Rio Negro basin (Brazilian Amazon), LM and SEM. 46–55: sternum valve. 56–64: raphe sternum valve. 65, 67, 69, 71. External views. 66, 68, 70. Internal views. Note the internal row of tiny marginal poroids (Figs 66, 68, arrows) and grooves on the raphe branches (Fig. 67, arrow). 46–68: Sample SP-400. 274, Rio Negro, Brazilian Amazon. 69–71 Sample SP-400.315, Rio Negro, Brazilian Amazon." figureDoi="http://doi.org/10.5281/zenodo.13667190" httpUri="https://zenodo.org/record/13667190/files/figure.png" pageId="4" pageNumber="241">Figs 46−68</figureCitation>
). Sample (SP-400.274) deposited at the herbarium from the Instituto de Botânica de 
<collectingRegion id="E34AFE84FFD7810AFB2755BF6D78F82C" box="[1268,1380,1937,1962]" country="Brazil" name="Sao Paulo" pageId="4" pageNumber="241">São Paulo</collectingRegion>
(SP!). 
<collectingCountry id="599970F6FFD7810AFF5B559B68EDF848" box="[136,241,1973,1998]" name="Brazil" pageId="4" pageNumber="241">BRAZIL</collectingCountry>
. 
<collectingRegion id="E34AFE84FFD7810AFF2F559B696BF848" box="[252,375,1973,1998]" country="Brazil" name="Amazonas" pageId="4" pageNumber="241">Amazonas</collectingRegion>
: Barcelos Municipality, small name-less river (‘igapó’), from the right bank of the Rio Negro hydrographical basin (
<geoCoordinate id="44BA56A1FFD7810AFE5155F76A13F874" box="[386,527,2009,2034]" degrees="0.488409" direction="south" orientation="latitude" pageId="4" pageNumber="241" precision="1" value="-0.488409">0.488409° S</geoCoordinate>
, 
<geoCoordinate id="44BA56A1FFD7810AFDC855F76ADEF874" box="[539,706,2009,2034]" degrees="64.612874" direction="west" orientation="longitude" pageId="4" pageNumber="241" precision="1" value="-64.61288">64.612874° W</geoCoordinate>
), phytoplankton sample, 
<emphasis id="13FAEC74FFD7810AFC0955F76BF1F874" box="[986,1005,2009,2034]" italics="true" pageId="4" pageNumber="241">C</emphasis>
. 
<emphasis id="13FAEC74FFD7810AFC2755F76C19F874" box="[1012,1029,2009,2034]" italics="true" pageId="4" pageNumber="241">E</emphasis>
. 
<emphasis id="13FAEC74FFD7810AFBC055F76C47F874" box="[1043,1115,2009,2034]" italics="true" pageId="4" pageNumber="241">Wetzel</emphasis>
, 
<emphasis id="13FAEC74FFD7810AFBBB55F76D19F874" box="[1128,1285,2009,2034]" italics="true" pageId="4" pageNumber="241">
<date id="553016A6FFD7810AFBBB55F76D19F874" box="[1128,1285,2009,2034]" pageId="4" pageNumber="241" value="2005-03-04">4 March 2005</date>
</emphasis>
. (
<figureCitation id="B9B52CE3FFD7810AFAC855F76D82F874" box="[1307,1438,2009,2034]" captionStart="FIGURES 46–71" captionStartId="7.[136,243,1854,1875]" captionTargetBox="[169,1426,207,1821]" captionTargetId="figure-14@7.[151,1436,190,1829]" captionTargetPageId="7" captionText="FIGURES 46–71. Platessa guianensis sp. nov. from Rio Negro basin (Brazilian Amazon), LM and SEM. 46–55: sternum valve. 56–64: raphe sternum valve. 65, 67, 69, 71. External views. 66, 68, 70. Internal views. Note the internal row of tiny marginal poroids (Figs 66, 68, arrows) and grooves on the raphe branches (Fig. 67, arrow). 46–68: Sample SP-400. 274, Rio Negro, Brazilian Amazon. 69–71 Sample SP-400.315, Rio Negro, Brazilian Amazon." figureDoi="http://doi.org/10.5281/zenodo.13667190" httpUri="https://zenodo.org/record/13667190/files/figure.png" pageId="4" pageNumber="241">Figs 69−71</figureCitation>
). Sample (SP-400.315) deposited at the herbarium from the Instituto de Botânica de 
<collectingRegion id="E34AFE84FFD7810AFBF955D36C87F790" box="[1066,1179,2045,2070]" country="Brazil" name="Sao Paulo" pageId="4" pageNumber="241">São Paulo</collectingRegion>
(SP!).
</paragraph>
</subSubSection>
<caption id="75F160EEFFD6810BFF5B553E6B52F85F" ID-DOI="http://doi.org/10.5281/zenodo.13667178" ID-Zenodo-Dep="13667178" httpUri="https://zenodo.org/record/13667178/files/figure.png" pageId="5" pageNumber="242" startId="5.[136,243,1808,1829]" targetBox="[161,1426,209,1774]" targetPageId="5" targetType="figure">
<paragraph id="21313066FFD6810BFF5B553E6B52F85F" blockId="5.[136,1452,1808,2009]" pageId="5" pageNumber="242">
<emphasis id="13FAEC74FFD6810BFF5B553E6926F8A3" bold="true" box="[136,314,1808,1829]" pageId="5" pageNumber="242">FIGURES 38–42.</emphasis>
<taxonomicName id="E68E4BE5FFD6810BFE93553E69E1F8A3" authorityName="Tudesque &amp; Cohu &amp; Wetzel" authorityYear="2016" box="[320,509,1808,1829]" class="Bacillariophyceae" family="Achnanthaceae" genus="Platessa" higherTaxonomySource="GBIF" kingdom="Chromista" order="Achnanthales" pageId="5" pageNumber="242" phylum="Bacillariophyta" rank="species" species="guianensis" status="sp. nov.">
<emphasis id="13FAEC74FFD6810BFE93553E69E1F8A3" box="[320,509,1808,1829]" italics="true" pageId="5" pageNumber="242">Platessa guianensis</emphasis>
</taxonomicName>
<taxonomicNameLabel id="08C9510FFFD6810BFDD0553E6A57F8A3" box="[515,587,1808,1829]" pageId="5" pageNumber="242" rank="species">
<emphasis id="13FAEC74FFD6810BFDD0553E6A04F8A3" box="[515,536,1808,1829]" italics="true" pageId="5" pageNumber="242">sp</emphasis>
. 
<emphasis id="13FAEC74FFD6810BFDF0553E6A5AF8A3" box="[547,582,1808,1829]" italics="true" pageId="5" pageNumber="242">nov</emphasis>
.
</taxonomicNameLabel>
, type material from French Guiana SEM. 38. External view of the RSV showing the raphe sternum features, the biseriate striae, the concavity of the valve and the discontinuous row of elongated “poroids” on the mantle. 39. Detail of the proximal raphe ending surrounded by a groove (arrow). 40. Detail of the distal raphe ending with delta-shaped groove with angular outline (arrow) and discontinuity of the mantle “poroids”. 41. Internal view of the RSV showing the raphe sternum features with proximal raphe endings deflected in opposite directions, slightly deflected distal raphe endings, tiny helictoglossae. 42. Ultrastructural detail of the internal aperture of the areola (cribrum) and inner view of poroid (arrow).
</paragraph>
</caption>
<caption id="75F160EEFFD58108FF5B55B26976F79B" ID-DOI="http://doi.org/10.5281/zenodo.13667184" ID-Zenodo-Dep="13667184" httpUri="https://zenodo.org/record/13667184/files/figure.png" pageId="6" pageNumber="243" startId="6.[136,243,1948,1969]" targetBox="[207,1387,209,1913]" targetPageId="6" targetType="figure">
<paragraph id="21313066FFD58108FF5B55B26976F79B" blockId="6.[136,1451,1948,2077]" pageId="6" pageNumber="243">
<emphasis id="13FAEC74FFD58108FF5B55B26925F837" bold="true" box="[136,313,1948,1969]" pageId="6" pageNumber="243">FIGURES 43–45.</emphasis>
<taxonomicName id="E68E4BE5FFD58108FEED55B269E0F837" authorityName="Tudesque &amp; Cohu &amp; Wetzel" authorityYear="2016" box="[318,508,1948,1969]" class="Bacillariophyceae" family="Achnanthaceae" genus="Platessa" higherTaxonomySource="GBIF" kingdom="Chromista" order="Achnanthales" pageId="6" pageNumber="243" phylum="Bacillariophyta" rank="species" species="guianensis" status="sp. nov.">
<emphasis id="13FAEC74FFD58108FEED55B269E0F837" box="[318,508,1948,1969]" italics="true" pageId="6" pageNumber="243">Platessa guianensis</emphasis>
</taxonomicName>
<taxonomicNameLabel id="08C9510FFFD58108FDD355B26A54F837" box="[512,584,1948,1969]" pageId="6" pageNumber="243" rank="species">
<emphasis id="13FAEC74FFD58108FDD355B26A09F837" box="[512,533,1948,1969]" italics="true" pageId="6" pageNumber="243">sp</emphasis>
. 
<emphasis id="13FAEC74FFD58108FDF355B26A5FF837" box="[544,579,1948,1969]" italics="true" pageId="6" pageNumber="243">nov</emphasis>
.
</taxonomicNameLabel>
, type material from French Guiana SEM. 43. External view of the SV with tiny depressions in the axial area, elongated poroids on the mantle located in a groove. Notches (arrows). 44. Complete frustule showing internal view of the RSV and internal view of the SV, the open copulae, the valvocopula and the notches (arrow). 45. Internal view of the SV with trace of vestigial raphe (arrow).
</paragraph>
</caption>
<caption id="75F160EEFFD48109FF5B55106A37F839" ID-DOI="http://doi.org/10.5281/zenodo.13667190" ID-Zenodo-Dep="13667190" httpUri="https://zenodo.org/record/13667190/files/figure.png" pageId="7" pageNumber="244" startId="7.[136,243,1854,1875]" targetBox="[169,1426,207,1821]" targetPageId="7" targetType="figure">
<paragraph id="21313066FFD48109FF5B55106A37F839" blockId="7.[136,1452,1854,1983]" pageId="7" pageNumber="244">
<emphasis id="13FAEC74FFD48109FF5B55106927F8D5" bold="true" box="[136,315,1854,1875]" pageId="7" pageNumber="244">FIGURES 46–71.</emphasis>
<taxonomicName id="E68E4BE5FFD48109FE9255106A1CF8D5" authorityName="Tudesque &amp; Cohu &amp; Wetzel" authorityYear="2016" box="[321,512,1854,1875]" class="Bacillariophyceae" family="Achnanthaceae" genus="Platessa" higherTaxonomySource="GBIF" kingdom="Chromista" order="Achnanthales" pageId="7" pageNumber="244" phylum="Bacillariophyta" rank="species" species="guianensis" status="sp. nov.">
<emphasis id="13FAEC74FFD48109FE9255106A1CF8D5" box="[321,512,1854,1875]" italics="true" pageId="7" pageNumber="244">Platessa guianensis</emphasis>
</taxonomicName>
<taxonomicNameLabel id="08C9510FFFD48109FDD555106A4CF8D5" box="[518,592,1854,1875]" pageId="7" pageNumber="244" rank="species">
<emphasis id="13FAEC74FFD48109FDD555106A07F8D5" box="[518,539,1854,1875]" italics="true" pageId="7" pageNumber="244">sp</emphasis>
. 
<emphasis id="13FAEC74FFD48109FDFB55106A57F8D5" box="[552,587,1854,1875]" italics="true" pageId="7" pageNumber="244">nov</emphasis>
.
</taxonomicNameLabel>
from Rio Negro basin (Brazilian Amazon), LM and SEM. 46–55: sternum valve. 56–64: raphe sternum valve. 65, 67, 69, 71. External views. 66, 68, 70. Internal views. Note the internal row of tiny marginal poroids (Figs 66, 68, arrows) and grooves on the raphe branches (Fig. 67, arrow). 46–68: Sample SP-400. 274, Rio Negro, Brazilian Amazon. 69–71 Sample SP-400.315, Rio Negro, Brazilian Amazon.
</paragraph>
</caption>
<subSubSection id="699463EDFFD48106FF6E55C16C6DFE7B" lastPageId="8" lastPageNumber="245" pageId="7" pageNumber="244" type="distribution">
<paragraph id="21313066FFD48109FF6E55C16DB7F78E" blockId="7.[136,1451,2031,2092]" box="[189,1451,2031,2056]" pageId="7" pageNumber="244">
<emphasis id="13FAEC74FFD48109FF6E55C169F4F78E" bold="true" box="[189,488,2031,2056]" pageId="7" pageNumber="244">Distribution and ecology</emphasis>
:—The 
<typeStatus id="FE358EC4FFD48109FD9355C16A6CF78E" box="[576,624,2031,2056]" pageId="7" pageNumber="244">type</typeStatus>
locality is the same as that of 
<taxonomicName id="E68E4BE5FFD48109FC0055C16DB7F78E" authority="Tudesque et al. (2015: 24)" authorityName="Tudesque" authorityYear="2015" box="[979,1451,2031,2056]" class="Bacillariophyceae" family="Sellaphoraceae" genus="Lacuneolimna" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="7" pageNumber="244" phylum="Ochrophyta" rank="species" species="novagallia">
<emphasis id="13FAEC74FFD48109FC0055C16CE8F78E" box="[979,1268,2031,2056]" italics="true" pageId="7" pageNumber="244">Lacuneolimna novagallia</emphasis>
<bibRefCitation id="451F4D97FFD48109FB2F55C16DB7F78E" author="Tudesque, L. &amp; Le Cohu, R. &amp; Coste, M. &amp; Lange-Bertalot, H." box="[1276,1451,2031,2056]" pageId="7" pageNumber="244" pagination="19 - 30" refId="ref9789" refString="Tudesque, L., Le Cohu, R., Coste, M. &amp; Lange-Bertalot, H. (2015) Lacuneolimna gen. nov., Lacuneolimna zalokariae comb. nov. and Lacuneolimna novagallia spec. nov. (Bacillariophyceae) from the French Guiana diatom freshwater flora. Phytotaxa 231 (1): 19 - 30. http: // dx. doi. org / 10.11646 / phytotaxa. 231.1.2" type="journal article" year="2015">
Tudesque 
<emphasis id="13FAEC74FFD48109FAA255C16DB9F78E" box="[1393,1445,2031,2056]" italics="true" pageId="7" pageNumber="244">et al</emphasis>
.
</bibRefCitation>
</taxonomicName>
</paragraph>
<paragraph id="21313066FFD48106FF5B5A3D6C1BFF5B" blockId="7.[136,1451,2031,2092]" lastBlockId="8.[136,1452,160,509]" lastPageId="8" lastPageNumber="245" pageId="7" pageNumber="244">
(2015: 24). At the place where it was sampled, the trophic status and the saprobic degree are very low, respectively oligotrophic and oligosaprobic. The same ecological status also applies to the localities where the species was found in the 
<collectingRegion id="E34AFE84FFDB8106FF1D52EA6958FF5B" box="[206,324,196,221]" country="Argentina" name="Rio Negro" pageId="8" pageNumber="245">Rio Negro</collectingRegion>
basin (Amazon basin), including low pH preferences (
<emphasis id="13FAEC74FFDB8106FC7852EA6BD9FF5B" box="[939,965,196,221]" italics="true" pageId="8" pageNumber="245">ca</emphasis>
. 4.5).
</paragraph>
<paragraph id="21313066FFDB8106FF6E52C66C6DFE7B" blockId="8.[136,1452,160,509]" pageId="8" pageNumber="245">
In the 
<typeStatus id="FE358EC4FFDB8106FED652C66928FE87" box="[261,308,232,257]" pageId="8" pageNumber="245">type</typeStatus>
locality, the diatom community consists of a high diversity of genera with many undetermined species, mainly in the genera 
<taxonomicName id="E68E4BE5FFDB8106FEB9532269DDFEA3" authorityName="C.G.Ehrenberg" authorityYear="1837" box="[362,449,268,293]" class="Bacillariophyceae" family="Eunotiaceae" genus="Eunotia" higherTaxonomySource="GBIF" kingdom="Chromista" order="Eunotiales" pageId="8" pageNumber="245" phylum="Bacillariophyta" rank="genus">
<emphasis id="13FAEC74FFDB8106FEB9532269DDFEA3" box="[362,449,268,293]" italics="true" pageId="8" pageNumber="245">Eunotia</emphasis>
</taxonomicName>
, 
<taxonomicName id="E68E4BE5FFDB8106FE1E53226A01FEA3" authorityName="Vyverman &amp; Compere" authorityYear="1991" box="[461,541,268,293]" class="Bacillariophyceae" family="Achnanthidiaceae" genus="Nupela" higherTaxonomySource="GBIF" kingdom="Chromista" order="Achnanthales" pageId="8" pageNumber="245" phylum="Ochrophyta" rank="genus">
<emphasis id="13FAEC74FFDB8106FE1E53226A01FEA3" box="[461,541,268,293]" italics="true" pageId="8" pageNumber="245">Nupela</emphasis>
</taxonomicName>
and 
<taxonomicName id="E68E4BE5FFDB8106FD9C53226ADBFEA3" authorityName="C.Mereschkowsky" authorityYear="1902" box="[591,711,268,293]" class="Bacillariophyceae" family="Naviculaceae" genus="Sellaphora" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="8" pageNumber="245" phylum="Bacillariophyta" rank="genus">
<emphasis id="13FAEC74FFDB8106FD9C53226ADBFEA3" box="[591,711,268,293]" italics="true" pageId="8" pageNumber="245">Sellaphora</emphasis>
</taxonomicName>
.Although the exhaustive taxonomic inventory has not been finished yet, many accompanying species of 
<taxonomicName id="E68E4BE5FFDB8106FDDC531E6ABDFECF" authorityName="Tudesque &amp; Cohu &amp; Wetzel" authorityYear="2016" box="[527,673,304,329]" class="Bacillariophyceae" family="Achnanthaceae" genus="Platessa" higherTaxonomySource="GBIF" kingdom="Chromista" order="Achnanthales" pageId="8" pageNumber="245" phylum="Bacillariophyta" rank="species" species="guianensis">
<emphasis id="13FAEC74FFDB8106FDDC531E6A3CFECF" box="[527,544,304,329]" italics="true" pageId="8" pageNumber="245">P</emphasis>
. 
<emphasis id="13FAEC74FFDB8106FDFF531E6ABDFECF" box="[556,673,304,329]" italics="true" pageId="8" pageNumber="245">guianensis</emphasis>
</taxonomicName>
have been inventoried such as: 
<taxonomicName id="E68E4BE5FFDB8106FC2B531E69DEFEEB" authority="Metzeltin &amp; Lange-Bertalot (1998: 31)" authorityName="Metzeltin &amp; Lange-Bertalot" authorityPageNumber="31" authorityYear="1998" class="Bacillariophyceae" family="Naviculaceae" genus="Chamaepinnularia" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="8" pageNumber="245" phylum="Bacillariophyta" rank="species" species="brasiliana">
<emphasis id="13FAEC74FFDB8106FC2B531E6D21FECF" box="[1016,1341,304,329]" italics="true" pageId="8" pageNumber="245">Chamaepinnularia brasiliana</emphasis>
<bibRefCitation id="451F4D97FFDB8106FA91531E69DEFEEB" author="Metzeltin, D. &amp; Lange-Bertalot, H." pageId="8" pageNumber="245" pagination="1 - 695" refId="ref8997" refString="Metzeltin, D. &amp; Lange-Bertalot, H. (1998) Tropical diatoms of South America I: About 700 predominantly rarely known or new taxa representative of the neotropical flora. Iconographia Diatomologica 5: 1 - 695." type="journal article" year="1998">Metzeltin &amp; Lange-Bertalot (1998: 31)</bibRefCitation>
</taxonomicName>
, 
<taxonomicName id="E68E4BE5FFDB8106FE18537A6B82FEEB" authority="Hustedt (1937: 188)" authorityName="Hustedt" authorityPageNumber="188" authorityYear="1937" box="[459,926,340,365]" class="Bacillariophyceae" family="Cocconeidaceae" genus="Cocconeis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Achnanthales" pageId="8" pageNumber="245" phylum="Bacillariophyta" rank="species" species="feuerbornii">
<emphasis id="13FAEC74FFDB8106FE18537A6AA2FEEB" box="[459,702,340,365]" italics="true" pageId="8" pageNumber="245">Cocconeis feuerbornii</emphasis>
<bibRefCitation id="451F4D97FFDB8106FD10537A6B82FEEB" author="Hustedt, F." box="[707,926,340,365]" pageId="8" pageNumber="245" pagination="187 - 295" refId="ref8155" refString="Hustedt, F. (1937) Systematische und okologische Untersuchungen uber die Diatomeen-Flora von Java, Bali und Sumatra nach dem Material der Deutschen Limnologischen Sunda-Expedition. &quot; Tropische Binnengewasser, Band VII &quot;. Archiv fur Hydrobiologie, Supplement 15 (2): 187 - 295." type="journal article" year="1937">Hustedt (1937: 188)</bibRefCitation>
</taxonomicName>
, 
<taxonomicName id="E68E4BE5FFDB8106FC7A537A691CFE17" authority="Metzeltin &amp; Lange-Bertalot (1998: 86)" authorityName="Metzeltin &amp; Lange-Bertalot" authorityPageNumber="86" authorityYear="1998" class="Bacillariophyceae" family="Eunotiaceae" genus="Eunotia" higherTaxonomySource="GBIF" kingdom="Chromista" order="Eunotiales" pageId="8" pageNumber="245" phylum="Bacillariophyta" rank="species" species="yanomami">
<emphasis id="13FAEC74FFDB8106FC7A537A6C64FEEB" box="[937,1144,340,365]" italics="true" pageId="8" pageNumber="245">Eunotia yanomami</emphasis>
<bibRefCitation id="451F4D97FFDB8106FBAF537A691CFE17" author="Metzeltin, D. &amp; Lange-Bertalot, H." pageId="8" pageNumber="245" pagination="1 - 695" refId="ref8997" refString="Metzeltin, D. &amp; Lange-Bertalot, H. (1998) Tropical diatoms of South America I: About 700 predominantly rarely known or new taxa representative of the neotropical flora. Iconographia Diatomologica 5: 1 - 695." type="journal article" year="1998">Metzeltin &amp; Lange-Bertalot (1998: 86)</bibRefCitation>
</taxonomicName>
, 
<taxonomicName id="E68E4BE5FFDB8106FEDD53566C7BFE17" authority="Moser, Lange-Bertalot &amp; Metzeltin" authorityName="Moser, Lange-Bertalot &amp; Metzeltin" box="[270,1127,376,401]" class="Bacillariophyceae" family="Gomphonemaceae" genus="Gomphonema" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="8" pageNumber="245" phylum="Ochrophyta" rank="subSpecies" species="brasiliense" subSpecies="pacificum">
<emphasis id="13FAEC74FFDB8106FEDD53566A35FE17" box="[270,553,376,401]" italics="true" pageId="8" pageNumber="245">Gomphonema brasiliense</emphasis>
ssp. 
<emphasis id="13FAEC74FFDB8106FDB553566ACEFE17" box="[614,722,376,401]" italics="true" pageId="8" pageNumber="245">pacificum</emphasis>
Moser, Lange-Bertalot &amp; Metzeltin
</taxonomicName>
in 
<bibRefCitation id="451F4D97FFDB8106FB5C53566DBBFE17" author="Moser, G. &amp; Lange-Bertalot, H. &amp; Metzeltin, D." box="[1167,1447,376,401]" pageId="8" pageNumber="245" pagination="1 - 464" refId="ref9209" refString="Moser, G., Lange-Bertalot, H. &amp; Metzeltin, D. (1998) Insel der Endemiten Geobotanisches Phanomen Neukaledonien (Island of endemics New Caledonia - a geobotanical phenomenon). Bibliotheca Diatomologica 38: 1 - 464." type="journal article" year="1998">
Moser 
<emphasis id="13FAEC74FFDB8106FB0C53566D05FE17" box="[1247,1305,376,401]" italics="true" pageId="8" pageNumber="245">et al.</emphasis>
(1998: 185)
</bibRefCitation>
, 
<taxonomicName id="E68E4BE5FFDB8106FF5B53B269D1FE33" authority="Fricke" authorityName="Fricke" authorityYear="1904" box="[136,461,412,437]" class="Bacillariophyceae" family="Gomphonemaceae" genus="Gomphonema" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="8" pageNumber="245" phylum="Ochrophyta" rank="species" species="lepidum">
<emphasis id="13FAEC74FFDB8106FF5B53B2699EFE33" box="[136,386,412,437]" italics="true" pageId="8" pageNumber="245">Gomphonema lepidum</emphasis>
Fricke
</taxonomicName>
in Schmidt (1904: 248), 
<taxonomicName id="E68E4BE5FFDB8106FD0E53B26CF9FE33" authority="Tudesque &amp; Le Cohu" authorityName="Tudesque &amp; Le Cohu" box="[733,1253,412,437]" class="Bacillariophyceae" family="Sellaphoraceae" genus="Lacuneolimna" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="8" pageNumber="245" phylum="Ochrophyta" rank="species" species="novagallia">
<emphasis id="13FAEC74FFDB8106FD0E53B26BE9FE33" box="[733,1013,412,437]" italics="true" pageId="8" pageNumber="245">Lacuneolimna novagallia</emphasis>
Tudesque &amp; Le Cohu
</taxonomicName>
in 
<bibRefCitation id="451F4D97FFDB8106FAD553B268E0FE5F" author="Tudesque, L. &amp; Le Cohu, R. &amp; Coste, M. &amp; Lange-Bertalot, H." pageId="8" pageNumber="245" pagination="19 - 30" refId="ref9789" refString="Tudesque, L., Le Cohu, R., Coste, M. &amp; Lange-Bertalot, H. (2015) Lacuneolimna gen. nov., Lacuneolimna zalokariae comb. nov. and Lacuneolimna novagallia spec. nov. (Bacillariophyceae) from the French Guiana diatom freshwater flora. Phytotaxa 231 (1): 19 - 30. http: // dx. doi. org / 10.11646 / phytotaxa. 231.1.2" type="journal article" year="2015">
Tudesque 
<emphasis id="13FAEC74FFDB8106FAA653B26DB0FE33" box="[1397,1452,412,437]" italics="true" pageId="8" pageNumber="245">et al.</emphasis>
(2015: 24)
</bibRefCitation>
, 
<taxonomicName id="E68E4BE5FFDB8106FED453EE6CFAFE5F" authority="(Lange-Bertalot &amp; Metzeltin 1998: 39) Tudesque, Le Cohu &amp; Lange-Bertalot" authorityName="Tudesque, Le Cohu &amp; Lange-Bertalot" baseAuthorityName="Lange-Bertalot &amp; Metzeltin" baseAuthorityPageNumber="39" baseAuthorityYear="1998" box="[263,1254,448,473]" class="Bacillariophyceae" family="Sellaphoraceae" genus="Lacuneolimna" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="8" pageNumber="245" phylum="Ochrophyta" rank="species" species="zalokariae">
<emphasis id="13FAEC74FFDB8106FED453EE690AFE5F" box="[263,278,448,473]" italics="true" pageId="8" pageNumber="245">L</emphasis>
. 
<emphasis id="13FAEC74FFDB8106FEF053EE698BFE5F" box="[291,407,448,473]" italics="true" pageId="8" pageNumber="245">zalokariae</emphasis>
(Lange-Bertalot &amp; 
<bibRefCitation id="451F4D97FFDB8106FDBF53EE6B20FE5F" author="Metzeltin, D. &amp; Lange-Bertalot, H." box="[620,828,448,473]" pageId="8" pageNumber="245" pagination="1 - 695" refId="ref8997" refString="Metzeltin, D. &amp; Lange-Bertalot, H. (1998) Tropical diatoms of South America I: About 700 predominantly rarely known or new taxa representative of the neotropical flora. Iconographia Diatomologica 5: 1 - 695." type="journal article" year="1998">Metzeltin 1998: 39</bibRefCitation>
) Tudesque, Le Cohu &amp; Lange-Bertalot
</taxonomicName>
in 
<bibRefCitation id="451F4D97FFDB8106FAD553EE68E1FE7B" author="Tudesque, L. &amp; Le Cohu, R. &amp; Coste, M. &amp; Lange-Bertalot, H." pageId="8" pageNumber="245" pagination="19 - 30" refId="ref9789" refString="Tudesque, L., Le Cohu, R., Coste, M. &amp; Lange-Bertalot, H. (2015) Lacuneolimna gen. nov., Lacuneolimna zalokariae comb. nov. and Lacuneolimna novagallia spec. nov. (Bacillariophyceae) from the French Guiana diatom freshwater flora. Phytotaxa 231 (1): 19 - 30. http: // dx. doi. org / 10.11646 / phytotaxa. 231.1.2" type="journal article" year="2015">
Tudesque 
<emphasis id="13FAEC74FFDB8106FAA653EE6DB0FE5F" box="[1397,1452,448,473]" italics="true" pageId="8" pageNumber="245">et al.</emphasis>
(2015: 21)
</bibRefCitation>
, and 
<taxonomicName id="E68E4BE5FFDB8106FEE553CA6C71FE7B" authority="(Hustedt 1952: 385) Lange-Bertalot (1999: 283)" authorityName="Lange-Bertalot" authorityPageNumber="283" authorityYear="1999" baseAuthorityName="Hustedt" baseAuthorityPageNumber="385" baseAuthorityYear="1952" box="[310,1133,484,509]" class="Bacillariophyceae" family="Achnanthaceae" genus="Planothidium" higherTaxonomySource="GBIF" kingdom="Chromista" order="Achnanthales" pageId="8" pageNumber="245" phylum="Bacillariophyta" rank="species" species="magnificum">
<emphasis id="13FAEC74FFDB8106FEE553CA6A48FE7B" box="[310,596,484,509]" italics="true" pageId="8" pageNumber="245">Planothidium magnificum</emphasis>
(
<bibRefCitation id="451F4D97FFDB8106FDB153CA6B33FE7B" author="Hustedt, F." box="[610,815,484,509]" pageId="8" pageNumber="245" pagination="366 - 410" refId="ref8313" refString="Hustedt, F. (1952) Neue und wenig bekannte Diatomeen. IV. Botaniska Notiser 1952: 366 - 410." type="journal article" year="1952">Hustedt 1952: 385</bibRefCitation>
) 
<bibRefCitation id="451F4D97FFDB8106FCEE53CA6C71FE7B" author="Lange-Bertalot, H." box="[829,1133,484,509]" pageId="8" pageNumber="245" pagination="276 - 289" refId="ref8615" refString="Lange-Bertalot, H. (1999) Neue Kombinationen von Taxa aus Achnanthes Bory (sensu lato). Iconographia Diatomologica 6: 276 - 289." type="journal article" year="1999">Lange-Bertalot (1999: 283)</bibRefCitation>
</taxonomicName>
.
</paragraph>
</subSubSection>
</treatment>
</document>