363 lines
62 KiB
XML
363 lines
62 KiB
XML
<document id="ADEB1D0E8260CB079446B87087D678DE" ID-CLB-Dataset="299335" ID-DOI="10.3897/phytokeys.244.122153" ID-GBIF-Dataset="1fb61b60-2674-4735-b214-353542d68d42" ID-publisher-id="122153" URI-arpha="C2E63B9B-BB72-5DDC-B533-C7609508DE46" XM.bibliography_approvedBy="admin" XM.materialsCitations_approvedBy="admin" article-type="research-article" checkinTime="1719861701407" checkinUser="pensoft" docAuthor="Van de Vijver, Bart, Pottiez, Margaux & Chavaux, Rémy" docDate="2024" docId="A0870673631B5C1A98DE066D3CB047DB" docLanguage="en" docName="PhytoKeys 244: 1-13" docOrigin="PhytoKeys 244" docSource="https://phytokeys.pensoft.net/article/122153/download/xml/" docStyle="DocumentStyle:PensoftTaxPub.0000.journal_article.phytokeys" docStyleName="PensoftTaxPub.0000.journal_article.phytokeys" docTitle="Gomphonema vancampianum Van de Vijver, Pottiez & Chavaux 2024, sp. nov." docType="treatment" docVersion="5" dtd-version="3.0" lastPageNumber="13" masterDocId="C2E63B9BBB725DDCB533C7609508DE46" masterDocTitle="Gomphonema vancampianum sp. nov. (Gomphonemataceae, Bacillariophyceae), a new large Gomphonema species from Europe" masterLastPageNumber="13" masterPageNumber="1" pageNumber="1" updateTime="1719868413037" updateUser="ExternalLinkService">
|
||
<mods:mods id="2D2A4D71322CDB59364E0857D08A5A84" xmlns:mods="http://www.loc.gov/mods/v3">
|
||
<mods:titleInfo id="EB58F204486E3F732534850DC45BDEF6">
|
||
<mods:title id="D621CC34E986E38588B0E71B50326936">Gomphonema vancampianum sp. nov. (Gomphonemataceae, Bacillariophyceae), a new large Gomphonema species from Europe</mods:title>
|
||
</mods:titleInfo>
|
||
<mods:name id="68BCBEF1BEF3D2DFF9EDCE8163048813" type="personal">
|
||
<mods:role id="EFFE1507369F136F17C82F2414000785">
|
||
<mods:roleTerm id="D44A83C33A3DCE5B03E675D2BD58806D">Author</mods:roleTerm>
|
||
</mods:role>
|
||
<mods:namePart id="C6E7859E065704AE648947D607D0BF3A">Van de Vijver, Bart</mods:namePart>
|
||
<mods:nameIdentifier id="AE40828F9097B0BDB54EACF2765D191E" type="ORCID">0000-0002-6244-1886</mods:nameIdentifier>
|
||
<mods:affiliation id="53DD721A862CF5060C47CDF0EE364BC0">Meise Botanic Garden, Research Department, Nieuwelaan 38, 1860 Meise, Belgium & University of Antwerp, Department of Biology – ECOSPHERE, Universiteitsplein 1, B- 2610 Wilrijk, Belgium</mods:affiliation>
|
||
</mods:name>
|
||
<mods:name id="A61F61556C6881A9FC05D41D0D334FAA" type="personal">
|
||
<mods:role id="D6FD8D6DD6E7A9BAE694E061DD4999D1">
|
||
<mods:roleTerm id="C067915CF7E8BA1DE88782C2998AA505">Author</mods:roleTerm>
|
||
</mods:role>
|
||
<mods:namePart id="BDF27BEC08A003997E7E9589C601401D">Pottiez, Margaux</mods:namePart>
|
||
<mods:nameIdentifier id="9B03812F28B2B24D2AD2E155D12E0A25" type="ORCID">https://orcid.org/0009-0009-2282-8355</mods:nameIdentifier>
|
||
<mods:affiliation id="4B9A60FD5D16FCD6AC5179D6D32DB9FB">Meise Botanic Garden, Research Department, Nieuwelaan 38, 1860 Meise, Belgium</mods:affiliation>
|
||
</mods:name>
|
||
<mods:name id="E5688A3D481D6DB1CA3654FDC3A14B0D" type="personal">
|
||
<mods:role id="B5E278E80D5609A854C338CDACFDED1F">
|
||
<mods:roleTerm id="616ACB22957ADE6CBD25BE30F8CFA168">Author</mods:roleTerm>
|
||
</mods:role>
|
||
<mods:namePart id="AED20FD30FBD14A09299D16FEE17C34E">Chavaux, Rémy</mods:namePart>
|
||
<mods:affiliation id="01C45F911F14F8E745EACB2DDFD457A1">Direction régionale Auvergne-Rhône-Alpes, Office français de la biodiversité, Site de Lyon – 5, place Jules Ferry, 69006 Lyon, France</mods:affiliation>
|
||
</mods:name>
|
||
<mods:typeOfResource id="8DD466DC9B4C8FD2CFBEF70B574EE11C">text</mods:typeOfResource>
|
||
<mods:relatedItem id="FB55A6E12F1530B5395B1F58BAD3A581" type="host">
|
||
<mods:titleInfo id="8E24585A654C53BA92CB7F698EE0C2AA">
|
||
<mods:title id="DE0F8A3DE92F37C09484508074EB2F4E">PhytoKeys</mods:title>
|
||
</mods:titleInfo>
|
||
<mods:part id="D780CC40D64744E3060DFF647854C76A">
|
||
<mods:date id="0A9DF37EF62818AF063AFB070F2FD075">2024</mods:date>
|
||
<mods:detail id="46024DA8B35EF95C7CF2F6E371DFF5E7" type="pubDate">
|
||
<mods:number id="19BAE5A35A2C059F51AA6DEA91C39AAE">2024-07-01</mods:number>
|
||
</mods:detail>
|
||
<mods:detail id="26345279F8E3D6E57CF42D3104698092" type="volume">
|
||
<mods:number id="0A3EE7EFD300740EAEDDAFB0AE0332B0">244</mods:number>
|
||
</mods:detail>
|
||
<mods:extent id="5A58063EE35862E90EF31EC3D31E548D" unit="page">
|
||
<mods:start id="4ADEB4AD5AFF5F1C8E2ADD427EC3F35D">1</mods:start>
|
||
<mods:end id="9DE0A91663B3BD365E039D5ED7983B84">13</mods:end>
|
||
</mods:extent>
|
||
</mods:part>
|
||
</mods:relatedItem>
|
||
<mods:classification id="F4A15C92ADF0C90363A1239D139D8079">journal article</mods:classification>
|
||
<mods:identifier id="DC1DD3CC7C017E7DE8B3039A37985980" type="CLB-Dataset">299335</mods:identifier>
|
||
<mods:identifier id="CB074FCAECAED4D85F67D56CB459B1E8" type="DOI">10.3897/phytokeys.244.122153</mods:identifier>
|
||
<mods:identifier id="CF21321641577394C9C19CD441580FC7" type="GBIF-Dataset">1fb61b60-2674-4735-b214-353542d68d42</mods:identifier>
|
||
</mods:mods>
|
||
<treatment id="A0870673631B5C1A98DE066D3CB047DB" ID-DOI="http://doi.org/10.5281/zenodo.12611710" ID-GBIF-Taxon="234395401" ID-Zenodo-Dep="12611710" ID-arpha="A0870673-631B-5C1A-98DE-066D3CB047DB" LSID="urn:lsid:plazi:treatment:A0870673631B5C1A98DE066D3CB047DB" httpUri="http://treatment.plazi.org/id/A0870673631B5C1A98DE066D3CB047DB">
|
||
<subSubSection id="77D27332484C2ED971B4F63E888716F7" type="nomenclature">
|
||
<paragraph id="10D926405AA0B22228786EDFDF0823D8">
|
||
<taxonomicName id="FDE123D8B2774F725E7E498EE7B559FC" authority="Van de Vijver, Pottiez & Chavaux" authorityName="Van de Vijver, Pottiez & Chavaux" authorityYear="2024" class="Bacillariophyceae" family="Gomphonemataceae" genus="Gomphonema" higherTaxonomySource="GBIF" kingdom="Plantae" order="Cymbellales" phylum="Ochrophyta" rank="species" species="vancampianum" status="sp. nov.">
|
||
<emphasis id="5113EBC192E03A92AEA2BFEF5F876635" italics="true">Gomphonema vancampianum</emphasis>
|
||
Van de Vijver, Pottiez & Chavaux
|
||
</taxonomicName>
|
||
<taxonomicNameLabel id="6064FE6D8B698951E53E1B3A033650A3" rank="species">sp. nov.</taxonomicNameLabel>
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="46220DFF4605BAAF2C6D08E4AEB9E6C0" type="description">
|
||
<paragraph id="F61D1AE9CCA49241F393785797E41F98">
|
||
<figureCitation id="41DB652AA368FA7725C147B79032D8EA" captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Gomphonema vancampianum sp. nov. LM micrographs taken from the holotype material (BR- 4839, Lac du Drapeau, Sample DRAPEAU-U 03 VEG, France) A LM picture of a frustule in girdle view. The arrow indicates the smaller, more distantly spaced areolae on the mantle B – O LM pictures of valves in valve face view in decreasing length. The arrows indicate the possible presence of the marginal crest. Scale bar: 10 µm." figureDoi="10.3897/phytokeys.244.122153.figure1" httpUri="https://binary.pensoft.net/fig/1082880">Figs 1</figureCitation>
|
||
,
|
||
<figureCitation id="43C9CB9BF4BD7656B58486BA8AB380A9" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Gomphonema vancampianum sp. nov. SEM micrographs taken from the holotype material (BR- 4839, Lac du Drapeau, Sample DRAPEAU-U 03 VEG, France) A SEM external view of the headpole in girdle view showing the marginal crest on both valves, the larger, reniformly occluded upper areolae and the smaller, more distant areolae towards the mantle edge. Note also the slit-like pores on the girdle band B SEM external detail of the upper valve part of a valve bearing a crest showing the lowering marginal crest at the apex C SEM external view of an entire crest-bearing valve. Note the shallow depressions in the axial area D SEM external view of valve without marginal crest. Note the shallow depressions in the axial area and the valve face striae continuing over the valve face / mantle junction E SEM external detail of the central area with the depressed large areolae and the stigmoid. The shallow pit-like depressions are well visible in the axial area F SEM external detail of the footpole with the distal raphe fissure bisecting the apical pore field. Scale bars: 10 µm (A – D), 5 µm (E – F)." figureDoi="10.3897/phytokeys.244.122153.figure2" httpUri="https://binary.pensoft.net/fig/1082881">2</figureCitation>
|
||
,
|
||
<figureCitation id="A44DF95627977071510C0624796CB16A" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Gomphonema vancampianum sp. nov. SEM micrographs taken from the holotype material (BR- 4839, Lac du Drapeau, Sample DRAPEAU-U 03 VEG, France) A SEM internal view of an entire valve B SEM internal detail of the central area with the stigmoid located in a long depression, the hooked central raphe endings and the long foramina with the areolae C SEM internal detail of the areolae with the small silica struts D SEM internal detail of the footpole with the small pseudoseptum, the helictoglossa and the apical pore field E SEM external view of an entire valve with marginal crest from Lac du Réaltor, Provence, France (photo courtesy of Dr Carlos E. Wetzel). Scale bars: 10 µm (A, E), 1 µm (B – D)." figureDoi="10.3897/phytokeys.244.122153.figure3" httpUri="https://binary.pensoft.net/fig/1082882">3</figureCitation>
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="SECID0E3KAC" type="type material">
|
||
<paragraph id="32FF0D1C5233EE1865116AD175B09959">
|
||
<heading id="EEA13579CED787951E17F32146A1CCAA" reason="title">Type materials.</heading>
|
||
</paragraph>
|
||
<paragraph id="843338D5A64CC943EA8FA015C738318D">
|
||
<materialsCitation id="EF412E2098351BFAB511DFC4980ADF30" ID-GBIF-Occurrence="4900788302" collectingDate="2023-08-22" collectionCode="BR" collectorName="R. Chavaux" country="Belgium" county="Departement du Rhone" location="Lac du Drapeau" municipality="Lyon" specimenCode="BR- 4839" specimenCount="1" typeStatus="holotype">
|
||
<emphasis id="67DB539FE18C0B409BE7CBEF8361C618" bold="true">
|
||
<emphasis id="03845BD9DFBA000AAAB55D9BD75E0A01" bold="true" italics="true">
|
||
<typeStatus id="88B65FB0ED0247F4CE69044AEB1C4F47" type="holotype">Holotype</typeStatus>
|
||
</emphasis>
|
||
.
|
||
</emphasis>
|
||
<specimenCode id="9CE54603B4718C36EB8523E231647A2A">BR- 4839</specimenCode>
|
||
(Meise Botanic Garden, Belgium). Fig.
|
||
<figureCitation id="93E2685FE0CF91B0CC49188EDA0972B2" captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Gomphonema vancampianum sp. nov. LM micrographs taken from the holotype material (BR- 4839, Lac du Drapeau, Sample DRAPEAU-U 03 VEG, France) A LM picture of a frustule in girdle view. The arrow indicates the smaller, more distantly spaced areolae on the mantle B – O LM pictures of valves in valve face view in decreasing length. The arrows indicate the possible presence of the marginal crest. Scale bar: 10 µm." figureDoi="10.3897/phytokeys.244.122153.figure1" httpUri="https://binary.pensoft.net/fig/1082880">1 C</figureCitation>
|
||
represents the holotype
|
||
</materialsCitation>
|
||
.
|
||
<materialsCitation id="5C881D94996AF86DE3791250248B828F" ID-GBIF-Occurrence="4900788301" collectingDate="2023-08-22" collectorName="R. Chavaux" country="France" county="Departement du Rhone" location="Lac du Drapeau" municipality="Lyon" specimenCode="Slide 441" specimenCount="1" typeStatus="isotype">
|
||
<emphasis id="5E57D04C770B82FC6A7F15697437A179" bold="true">
|
||
<emphasis id="4AE227AAEA00BAD52DC90ACAB435D234" bold="true" italics="true">
|
||
<typeStatus id="58294853A703F6AED7C5C8707A670D22" type="isotype">Isotype</typeStatus>
|
||
</emphasis>
|
||
.
|
||
</emphasis>
|
||
<specimenCode id="32DD587E4270E4664C89B074FEE3BD93">Slide 441</specimenCode>
|
||
(University of Antwerp, Belgium)
|
||
</materialsCitation>
|
||
.
|
||
</paragraph>
|
||
<caption id="BD6FB6E7536D8C3D55A22A0D082231C2" ID-DOI="10.3897/phytokeys.244.122153.figure1" ID-arpha="EAB48092-B1A8-5657-A267-D4CA959F20A2" httpUri="https://binary.pensoft.net/fig/1082880" startId="F1">
|
||
<paragraph id="4F06856082B724FE1827960BEB4D4D4F">
|
||
<label id="DEBBFFDF3B7344E52559384AB545B6EF">Figure 1.</label>
|
||
</paragraph>
|
||
<paragraph id="1E71632DE30F76F68AA7774AFC437847">
|
||
<taxonomicName id="5E8B0E52C05D8DF27D1279F2760F34D4" authorityName="Van de Vijver & Pottiez & Chavaux" authorityYear="2024" class="Bacillariophyceae" family="Gomphonemataceae" genus="Gomphonema" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" phylum="Ochrophyta" rank="species" species="vancampianum" status="sp. nov.">
|
||
<emphasis id="D215FA46EB5EE121F8C663B48EF67AD0" italics="true">Gomphonema vancampianum</emphasis>
|
||
</taxonomicName>
|
||
<taxonomicNameLabel id="856AE0F39685D4AD6FA2F5663DAF8ECD" rank="species">sp. nov.</taxonomicNameLabel>
|
||
LM micrographs taken from the holotype material (BR- 4839, Lac du Drapeau, Sample DRAPEAU-U 03 VEG, France)
|
||
<emphasis id="2CEF7F2AC1DD075CA038947464187AD8" bold="true">A</emphasis>
|
||
LM picture of a frustule in girdle view. The arrow indicates the smaller, more distantly spaced areolae on the mantle
|
||
<emphasis id="36CE0BF9671A67BAD81AB09D7870D477" bold="true">B</emphasis>
|
||
–
|
||
<emphasis id="E2FFB1075EDAC03CB97701B4FC8F53B3" bold="true">O</emphasis>
|
||
LM pictures of valves in valve face view in decreasing length. The arrows indicate the possible presence of the marginal crest. Scale bar: 10 µm.
|
||
</paragraph>
|
||
</caption>
|
||
</subSubSection>
|
||
<subSubSection id="SECID0ENMAC" type="Registration">
|
||
<paragraph id="9283BD1515520D321BCD7F3782592CE2">
|
||
<heading id="91285F8886CF2B8AFE94FC6B0CE4BA1A" reason="title">Registration.</heading>
|
||
</paragraph>
|
||
<paragraph id="07A857ACA21FFBC39E07CD68DE46C4CE">
|
||
<ext-link id="6059007BE74332A1E30D8EB1D49717BB" ext-link-type="uri" xlink_href="http://phycobank.org/104517" xlink_type="simple">http://phycobank.org/104517</ext-link>
|
||
.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="SECID0EYMAC" type="type locality">
|
||
<paragraph id="63D43C4CA0578E6D8DFE376CB5DBEC5B">
|
||
<heading id="6AB8F3A22BB925C1D250B9428F6C3B5B" reason="title">Type locality.</heading>
|
||
</paragraph>
|
||
<paragraph id="0836AFBAA4FD48A5443ABE5BF095D1B4">
|
||
<location id="DB2F01F3903DEDD1028961EEA7026068" LSID="urn:lsid:plazi:treatment:A0870673631B5C1A98DE066D3CB047DB:DB2F01F3903DEDD1028961EEA7026068" country="France" county="Departement du Rhone" municipality="Lyon" name="Lac du Drapeau">Lac du Drapeau</location>
|
||
(
|
||
<collectingMunicipality id="382EA6A1C177E7E7C20C5DA98F90286B">Lyon</collectingMunicipality>
|
||
,
|
||
<collectingCounty id="FF4A3E460CF890DDF25BDF6C7F43F937">Département du Rhône</collectingCounty>
|
||
,
|
||
<collectingCountry id="8C10BA98438370B329663B857FBBB8D5" name="France">France</collectingCountry>
|
||
), sample Drapeau-U 03 - VEG, (coll. date
|
||
<date id="57523CF805D36E1FC665A98C6417AD84" value="2023-08-22">
|
||
<collectingDate id="1392039AE37ACCEF04F232400677B7A7" value="2023-08-22">22. viii. 2023</collectingDate>
|
||
</date>
|
||
, leg.
|
||
<collectorName id="D3B2A19DEA84A8C95BD904DA2A51EC0C">R. Chavaux</collectorName>
|
||
).
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="SECID0E4MAC" type="etymology">
|
||
<paragraph id="0879C582ED3217587E174669B3E0CB9E">
|
||
<heading id="F2AD28BC38E49D6283F79B3C67C19C37" reason="title">Etymology.</heading>
|
||
</paragraph>
|
||
<paragraph id="48FF64C23F62FCC32B05EC49132064FA">
|
||
This species is named in honour of Prof. Dr Karel Van Camp, former Physics professor of the first author at Antwerp University (
|
||
<collectingCountry id="D7F07959D1A04FBBD0480FB6D392636F" name="Belgium">Belgium</collectingCountry>
|
||
) and life-long enthusiastic amateur diatomist and microscopist.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="SECID0ECNAC" type="description">
|
||
<paragraph id="F227348685C6FFDB4647A25B20F4BC69">
|
||
<heading id="C494528A33DB43CF502F43D142AFF725" reason="title">Description.</heading>
|
||
</paragraph>
|
||
<paragraph id="8C0ED28C131C2C7F7542C0A1DAA72486">
|
||
<emphasis id="AD062E7F8C82D8A6E30100FF696965A3" bold="true" italics="true">LM</emphasis>
|
||
(Fig.
|
||
<figureCitation id="5A7B47977C41F933D3714391D8D6BB1F" captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Gomphonema vancampianum sp. nov. LM micrographs taken from the holotype material (BR- 4839, Lac du Drapeau, Sample DRAPEAU-U 03 VEG, France) A LM picture of a frustule in girdle view. The arrow indicates the smaller, more distantly spaced areolae on the mantle B – O LM pictures of valves in valve face view in decreasing length. The arrows indicate the possible presence of the marginal crest. Scale bar: 10 µm." figureDoi="10.3897/phytokeys.244.122153.figure1" httpUri="https://binary.pensoft.net/fig/1082880">1</figureCitation>
|
||
). Frustules in girdle view narrowly clavate with transapical striae continuing on to the valve mantle without interruption; adjacent to the striae, a line of isolated areolae (Fig.
|
||
<figureCitation id="0A5F87086DB4603FA7F2C7A6DD1BB226" captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Gomphonema vancampianum sp. nov. LM micrographs taken from the holotype material (BR- 4839, Lac du Drapeau, Sample DRAPEAU-U 03 VEG, France) A LM picture of a frustule in girdle view. The arrow indicates the smaller, more distantly spaced areolae on the mantle B – O LM pictures of valves in valve face view in decreasing length. The arrows indicate the possible presence of the marginal crest. Scale bar: 10 µm." figureDoi="10.3897/phytokeys.244.122153.figure1" httpUri="https://binary.pensoft.net/fig/1082880">1 A</figureCitation>
|
||
, arrow). Headpole much broader than the footpole. Valves apiculate-clavate with elliptic-lanceolate upper valve part and largest width right above the valve middle. Lower valve part abruptly narrowing near the valve centre, then gradually tapering towards the acute footpole. Headpole acutely rounded with a narrow protracted, cuneate apex. Occasionally, valves surrounded by marginal crest, visible by changing focal depth (Fig.
|
||
<figureCitation id="CBF4D929E157B9C2EC266286AFF0C175" captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Gomphonema vancampianum sp. nov. LM micrographs taken from the holotype material (BR- 4839, Lac du Drapeau, Sample DRAPEAU-U 03 VEG, France) A LM picture of a frustule in girdle view. The arrow indicates the smaller, more distantly spaced areolae on the mantle B – O LM pictures of valves in valve face view in decreasing length. The arrows indicate the possible presence of the marginal crest. Scale bar: 10 µm." figureDoi="10.3897/phytokeys.244.122153.figure1" httpUri="https://binary.pensoft.net/fig/1082880">1 C, L, N</figureCitation>
|
||
, arrows). Valve dimensions (n = 25): length 30–60 µm, width 10–12 µm. Axial area moderately broad, linear with distinct, shallow markings, visible by changing focal depth. Central area asymmetrical: primary side with more distantly spaced single long stria and stigmoid, well separated near the valve middle. Isolated stria on the secondary side markedly shortened. Raphe clearly lateral and weakly undulating. Central raphe endings indistinct, almost straight. Terminal raphe fissures not discernible in LM. Striae parallel in the middle, soon becoming radiate towards the headpole, but remaining almost parallel or slightly radiate towards the footpole,
|
||
<quantity id="46ED7F16B933C0D2E200A5FE4EBA9C1A" metricMagnitude="-1" metricUnit="m" metricValue="2.667" metricValueMax="2.794" metricValueMin="2.54" unit="in" value="10.5" valueMax="11.0" valueMin="10.0">10–11 in</quantity>
|
||
10 µm, more closely spaced near the apices. Striae distinctly punctate, 18–24 areolae in 10 µm.
|
||
<emphasis id="137303908999B008BFD5FD923F288108" bold="true" italics="true">SEM</emphasis>
|
||
(Figs
|
||
<figureCitation id="669AB784D8474088DFA976BEFE7E2428" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Gomphonema vancampianum sp. nov. SEM micrographs taken from the holotype material (BR- 4839, Lac du Drapeau, Sample DRAPEAU-U 03 VEG, France) A SEM external view of the headpole in girdle view showing the marginal crest on both valves, the larger, reniformly occluded upper areolae and the smaller, more distant areolae towards the mantle edge. Note also the slit-like pores on the girdle band B SEM external detail of the upper valve part of a valve bearing a crest showing the lowering marginal crest at the apex C SEM external view of an entire crest-bearing valve. Note the shallow depressions in the axial area D SEM external view of valve without marginal crest. Note the shallow depressions in the axial area and the valve face striae continuing over the valve face / mantle junction E SEM external detail of the central area with the depressed large areolae and the stigmoid. The shallow pit-like depressions are well visible in the axial area F SEM external detail of the footpole with the distal raphe fissure bisecting the apical pore field. Scale bars: 10 µm (A – D), 5 µm (E – F)." figureDoi="10.3897/phytokeys.244.122153.figure2" httpUri="https://binary.pensoft.net/fig/1082881">2</figureCitation>
|
||
,
|
||
<figureCitation id="D0B2591E3D88461A7D58AAAE65F4FEC9" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Gomphonema vancampianum sp. nov. SEM micrographs taken from the holotype material (BR- 4839, Lac du Drapeau, Sample DRAPEAU-U 03 VEG, France) A SEM internal view of an entire valve B SEM internal detail of the central area with the stigmoid located in a long depression, the hooked central raphe endings and the long foramina with the areolae C SEM internal detail of the areolae with the small silica struts D SEM internal detail of the footpole with the small pseudoseptum, the helictoglossa and the apical pore field E SEM external view of an entire valve with marginal crest from Lac du Réaltor, Provence, France (photo courtesy of Dr Carlos E. Wetzel). Scale bars: 10 µm (A, E), 1 µm (B – D)." figureDoi="10.3897/phytokeys.244.122153.figure3" httpUri="https://binary.pensoft.net/fig/1082882">3</figureCitation>
|
||
).
|
||
<specimenCount id="12104825C84B0F2531253835EAB614D7" count="2" type="generic" typeStatus="types">Two types</specimenCount>
|
||
of valves present: with marginal crest (Fig.
|
||
<figureCitation id="6640B6532887A502702BD55E7AF9E326" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Gomphonema vancampianum sp. nov. SEM micrographs taken from the holotype material (BR- 4839, Lac du Drapeau, Sample DRAPEAU-U 03 VEG, France) A SEM external view of the headpole in girdle view showing the marginal crest on both valves, the larger, reniformly occluded upper areolae and the smaller, more distant areolae towards the mantle edge. Note also the slit-like pores on the girdle band B SEM external detail of the upper valve part of a valve bearing a crest showing the lowering marginal crest at the apex C SEM external view of an entire crest-bearing valve. Note the shallow depressions in the axial area D SEM external view of valve without marginal crest. Note the shallow depressions in the axial area and the valve face striae continuing over the valve face / mantle junction E SEM external detail of the central area with the depressed large areolae and the stigmoid. The shallow pit-like depressions are well visible in the axial area F SEM external detail of the footpole with the distal raphe fissure bisecting the apical pore field. Scale bars: 10 µm (A – D), 5 µm (E – F)." figureDoi="10.3897/phytokeys.244.122153.figure2" httpUri="https://binary.pensoft.net/fig/1082881">2 A – C</figureCitation>
|
||
) and lacking marginal crest (Fig.
|
||
<figureCitation id="3C578D0E824D1278D1668BC15FFFDE00" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Gomphonema vancampianum sp. nov. SEM micrographs taken from the holotype material (BR- 4839, Lac du Drapeau, Sample DRAPEAU-U 03 VEG, France) A SEM external view of the headpole in girdle view showing the marginal crest on both valves, the larger, reniformly occluded upper areolae and the smaller, more distant areolae towards the mantle edge. Note also the slit-like pores on the girdle band B SEM external detail of the upper valve part of a valve bearing a crest showing the lowering marginal crest at the apex C SEM external view of an entire crest-bearing valve. Note the shallow depressions in the axial area D SEM external view of valve without marginal crest. Note the shallow depressions in the axial area and the valve face striae continuing over the valve face / mantle junction E SEM external detail of the central area with the depressed large areolae and the stigmoid. The shallow pit-like depressions are well visible in the axial area F SEM external detail of the footpole with the distal raphe fissure bisecting the apical pore field. Scale bars: 10 µm (A – D), 5 µm (E – F)." figureDoi="10.3897/phytokeys.244.122153.figure2" httpUri="https://binary.pensoft.net/fig/1082881">2 D, F</figureCitation>
|
||
). Valve face and mantle striae in crested valves interrupted at the valve face / mantle junction by the thickened marginal crest. Marginal crest with undulating border near the headpole (Fig.
|
||
<figureCitation id="A666B9E66A3846683BBED2443A67A2B8" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Gomphonema vancampianum sp. nov. SEM micrographs taken from the holotype material (BR- 4839, Lac du Drapeau, Sample DRAPEAU-U 03 VEG, France) A SEM external view of the headpole in girdle view showing the marginal crest on both valves, the larger, reniformly occluded upper areolae and the smaller, more distant areolae towards the mantle edge. Note also the slit-like pores on the girdle band B SEM external detail of the upper valve part of a valve bearing a crest showing the lowering marginal crest at the apex C SEM external view of an entire crest-bearing valve. Note the shallow depressions in the axial area D SEM external view of valve without marginal crest. Note the shallow depressions in the axial area and the valve face striae continuing over the valve face / mantle junction E SEM external detail of the central area with the depressed large areolae and the stigmoid. The shallow pit-like depressions are well visible in the axial area F SEM external detail of the footpole with the distal raphe fissure bisecting the apical pore field. Scale bars: 10 µm (A – D), 5 µm (E – F)." figureDoi="10.3897/phytokeys.244.122153.figure2" httpUri="https://binary.pensoft.net/fig/1082881">2 A</figureCitation>
|
||
). Mantle striae in advalvar part composed of large, densely packed, c-shaped areolae, externally covered by small reniform siliceous flaps. Areolae in abvalvar part of the striae towards the mantle edge, smaller, c- to e-shaped (Fig.
|
||
<figureCitation id="2AACA79EDFAC5BA2493A87DE690F1A23" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Gomphonema vancampianum sp. nov. SEM micrographs taken from the holotype material (BR- 4839, Lac du Drapeau, Sample DRAPEAU-U 03 VEG, France) A SEM external view of the headpole in girdle view showing the marginal crest on both valves, the larger, reniformly occluded upper areolae and the smaller, more distant areolae towards the mantle edge. Note also the slit-like pores on the girdle band B SEM external detail of the upper valve part of a valve bearing a crest showing the lowering marginal crest at the apex C SEM external view of an entire crest-bearing valve. Note the shallow depressions in the axial area D SEM external view of valve without marginal crest. Note the shallow depressions in the axial area and the valve face striae continuing over the valve face / mantle junction E SEM external detail of the central area with the depressed large areolae and the stigmoid. The shallow pit-like depressions are well visible in the axial area F SEM external detail of the footpole with the distal raphe fissure bisecting the apical pore field. Scale bars: 10 µm (A – D), 5 µm (E – F)." figureDoi="10.3897/phytokeys.244.122153.figure2" httpUri="https://binary.pensoft.net/fig/1082881">2 A</figureCitation>
|
||
). Girdle bands broad with continuous row of transapically elongated narrow pores. Marginal crest lowering towards the apices (Fig.
|
||
<figureCitation id="50CF8DCAC7151DEE589D7BBEC707BBCD" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Gomphonema vancampianum sp. nov. SEM micrographs taken from the holotype material (BR- 4839, Lac du Drapeau, Sample DRAPEAU-U 03 VEG, France) A SEM external view of the headpole in girdle view showing the marginal crest on both valves, the larger, reniformly occluded upper areolae and the smaller, more distant areolae towards the mantle edge. Note also the slit-like pores on the girdle band B SEM external detail of the upper valve part of a valve bearing a crest showing the lowering marginal crest at the apex C SEM external view of an entire crest-bearing valve. Note the shallow depressions in the axial area D SEM external view of valve without marginal crest. Note the shallow depressions in the axial area and the valve face striae continuing over the valve face / mantle junction E SEM external detail of the central area with the depressed large areolae and the stigmoid. The shallow pit-like depressions are well visible in the axial area F SEM external detail of the footpole with the distal raphe fissure bisecting the apical pore field. Scale bars: 10 µm (A – D), 5 µm (E – F)." figureDoi="10.3897/phytokeys.244.122153.figure2" httpUri="https://binary.pensoft.net/fig/1082881">2 B, C</figureCitation>
|
||
). Valves lacking crest with striae extending almost continuously across the valve face / mantle junction (Fig.
|
||
<figureCitation id="10274E94CDC1106C65E8CBD5A4FD9D82" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Gomphonema vancampianum sp. nov. SEM micrographs taken from the holotype material (BR- 4839, Lac du Drapeau, Sample DRAPEAU-U 03 VEG, France) A SEM external view of the headpole in girdle view showing the marginal crest on both valves, the larger, reniformly occluded upper areolae and the smaller, more distant areolae towards the mantle edge. Note also the slit-like pores on the girdle band B SEM external detail of the upper valve part of a valve bearing a crest showing the lowering marginal crest at the apex C SEM external view of an entire crest-bearing valve. Note the shallow depressions in the axial area D SEM external view of valve without marginal crest. Note the shallow depressions in the axial area and the valve face striae continuing over the valve face / mantle junction E SEM external detail of the central area with the depressed large areolae and the stigmoid. The shallow pit-like depressions are well visible in the axial area F SEM external detail of the footpole with the distal raphe fissure bisecting the apical pore field. Scale bars: 10 µm (A – D), 5 µm (E – F)." figureDoi="10.3897/phytokeys.244.122153.figure2" httpUri="https://binary.pensoft.net/fig/1082881">2 F</figureCitation>
|
||
). Axial area covered with dense irregular pattern of shallow, pit-like depressions (Fig.
|
||
<figureCitation id="F1A43CC285684DE2273E41ED2D6E26AB" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Gomphonema vancampianum sp. nov. SEM micrographs taken from the holotype material (BR- 4839, Lac du Drapeau, Sample DRAPEAU-U 03 VEG, France) A SEM external view of the headpole in girdle view showing the marginal crest on both valves, the larger, reniformly occluded upper areolae and the smaller, more distant areolae towards the mantle edge. Note also the slit-like pores on the girdle band B SEM external detail of the upper valve part of a valve bearing a crest showing the lowering marginal crest at the apex C SEM external view of an entire crest-bearing valve. Note the shallow depressions in the axial area D SEM external view of valve without marginal crest. Note the shallow depressions in the axial area and the valve face striae continuing over the valve face / mantle junction E SEM external detail of the central area with the depressed large areolae and the stigmoid. The shallow pit-like depressions are well visible in the axial area F SEM external detail of the footpole with the distal raphe fissure bisecting the apical pore field. Scale bars: 10 µm (A – D), 5 µm (E – F)." figureDoi="10.3897/phytokeys.244.122153.figure2" httpUri="https://binary.pensoft.net/fig/1082881">2 B, D, E</figureCitation>
|
||
). Raphe branches clearly undulating (Fig.
|
||
<figureCitation id="A5E69B6EE59C45FB5CE805C7E2DCCD91" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Gomphonema vancampianum sp. nov. SEM micrographs taken from the holotype material (BR- 4839, Lac du Drapeau, Sample DRAPEAU-U 03 VEG, France) A SEM external view of the headpole in girdle view showing the marginal crest on both valves, the larger, reniformly occluded upper areolae and the smaller, more distant areolae towards the mantle edge. Note also the slit-like pores on the girdle band B SEM external detail of the upper valve part of a valve bearing a crest showing the lowering marginal crest at the apex C SEM external view of an entire crest-bearing valve. Note the shallow depressions in the axial area D SEM external view of valve without marginal crest. Note the shallow depressions in the axial area and the valve face striae continuing over the valve face / mantle junction E SEM external detail of the central area with the depressed large areolae and the stigmoid. The shallow pit-like depressions are well visible in the axial area F SEM external detail of the footpole with the distal raphe fissure bisecting the apical pore field. Scale bars: 10 µm (A – D), 5 µm (E – F)." figureDoi="10.3897/phytokeys.244.122153.figure2" httpUri="https://binary.pensoft.net/fig/1082881">2 C, D</figureCitation>
|
||
). Central raphe endings almost straight, small drop-like (Fig.
|
||
<figureCitation id="C49299BE920D0B2B8401A2594281E54F" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Gomphonema vancampianum sp. nov. SEM micrographs taken from the holotype material (BR- 4839, Lac du Drapeau, Sample DRAPEAU-U 03 VEG, France) A SEM external view of the headpole in girdle view showing the marginal crest on both valves, the larger, reniformly occluded upper areolae and the smaller, more distant areolae towards the mantle edge. Note also the slit-like pores on the girdle band B SEM external detail of the upper valve part of a valve bearing a crest showing the lowering marginal crest at the apex C SEM external view of an entire crest-bearing valve. Note the shallow depressions in the axial area D SEM external view of valve without marginal crest. Note the shallow depressions in the axial area and the valve face striae continuing over the valve face / mantle junction E SEM external detail of the central area with the depressed large areolae and the stigmoid. The shallow pit-like depressions are well visible in the axial area F SEM external detail of the footpole with the distal raphe fissure bisecting the apical pore field. Scale bars: 10 µm (A – D), 5 µm (E – F)." figureDoi="10.3897/phytokeys.244.122153.figure2" httpUri="https://binary.pensoft.net/fig/1082881">2 E</figureCitation>
|
||
). Distal raphe fissure at footpole bisecting apical pore field, continuing on to the mantle (Fig.
|
||
<figureCitation id="7F1F39563512D225C8A63C84BC3F895A" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Gomphonema vancampianum sp. nov. SEM micrographs taken from the holotype material (BR- 4839, Lac du Drapeau, Sample DRAPEAU-U 03 VEG, France) A SEM external view of the headpole in girdle view showing the marginal crest on both valves, the larger, reniformly occluded upper areolae and the smaller, more distant areolae towards the mantle edge. Note also the slit-like pores on the girdle band B SEM external detail of the upper valve part of a valve bearing a crest showing the lowering marginal crest at the apex C SEM external view of an entire crest-bearing valve. Note the shallow depressions in the axial area D SEM external view of valve without marginal crest. Note the shallow depressions in the axial area and the valve face striae continuing over the valve face / mantle junction E SEM external detail of the central area with the depressed large areolae and the stigmoid. The shallow pit-like depressions are well visible in the axial area F SEM external detail of the footpole with the distal raphe fissure bisecting the apical pore field. Scale bars: 10 µm (A – D), 5 µm (E – F)." figureDoi="10.3897/phytokeys.244.122153.figure2" httpUri="https://binary.pensoft.net/fig/1082881">2 F</figureCitation>
|
||
), at headpole splitting the marginal crest (when present) and continuing shortly on to the mantle (Fig.
|
||
<figureCitation id="8C012AD8ED2216E0CF4F66C2A33317A4" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Gomphonema vancampianum sp. nov. SEM micrographs taken from the holotype material (BR- 4839, Lac du Drapeau, Sample DRAPEAU-U 03 VEG, France) A SEM external view of the headpole in girdle view showing the marginal crest on both valves, the larger, reniformly occluded upper areolae and the smaller, more distant areolae towards the mantle edge. Note also the slit-like pores on the girdle band B SEM external detail of the upper valve part of a valve bearing a crest showing the lowering marginal crest at the apex C SEM external view of an entire crest-bearing valve. Note the shallow depressions in the axial area D SEM external view of valve without marginal crest. Note the shallow depressions in the axial area and the valve face striae continuing over the valve face / mantle junction E SEM external detail of the central area with the depressed large areolae and the stigmoid. The shallow pit-like depressions are well visible in the axial area F SEM external detail of the footpole with the distal raphe fissure bisecting the apical pore field. Scale bars: 10 µm (A – D), 5 µm (E – F)." figureDoi="10.3897/phytokeys.244.122153.figure2" httpUri="https://binary.pensoft.net/fig/1082881">2 C</figureCitation>
|
||
). Apical pore field bisected, composed of several rows of densely packed, rounded pores (Fig.
|
||
<figureCitation id="9EE307DBDA20E82174CF0D926E2BDA9D" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Gomphonema vancampianum sp. nov. SEM micrographs taken from the holotype material (BR- 4839, Lac du Drapeau, Sample DRAPEAU-U 03 VEG, France) A SEM external view of the headpole in girdle view showing the marginal crest on both valves, the larger, reniformly occluded upper areolae and the smaller, more distant areolae towards the mantle edge. Note also the slit-like pores on the girdle band B SEM external detail of the upper valve part of a valve bearing a crest showing the lowering marginal crest at the apex C SEM external view of an entire crest-bearing valve. Note the shallow depressions in the axial area D SEM external view of valve without marginal crest. Note the shallow depressions in the axial area and the valve face striae continuing over the valve face / mantle junction E SEM external detail of the central area with the depressed large areolae and the stigmoid. The shallow pit-like depressions are well visible in the axial area F SEM external detail of the footpole with the distal raphe fissure bisecting the apical pore field. Scale bars: 10 µm (A – D), 5 µm (E – F)." figureDoi="10.3897/phytokeys.244.122153.figure2" httpUri="https://binary.pensoft.net/fig/1082881">2 F</figureCitation>
|
||
), only present at footpole. Striae composed of c-shaped areolae, occluded by small reniform siliceous flaps, near the central area slightly sunken into valve surface (Fig.
|
||
<figureCitation id="32103E5415EF9E6577B24AD7E39FA49C" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Gomphonema vancampianum sp. nov. SEM micrographs taken from the holotype material (BR- 4839, Lac du Drapeau, Sample DRAPEAU-U 03 VEG, France) A SEM external view of the headpole in girdle view showing the marginal crest on both valves, the larger, reniformly occluded upper areolae and the smaller, more distant areolae towards the mantle edge. Note also the slit-like pores on the girdle band B SEM external detail of the upper valve part of a valve bearing a crest showing the lowering marginal crest at the apex C SEM external view of an entire crest-bearing valve. Note the shallow depressions in the axial area D SEM external view of valve without marginal crest. Note the shallow depressions in the axial area and the valve face striae continuing over the valve face / mantle junction E SEM external detail of the central area with the depressed large areolae and the stigmoid. The shallow pit-like depressions are well visible in the axial area F SEM external detail of the footpole with the distal raphe fissure bisecting the apical pore field. Scale bars: 10 µm (A – D), 5 µm (E – F)." figureDoi="10.3897/phytokeys.244.122153.figure2" httpUri="https://binary.pensoft.net/fig/1082881">2 E</figureCitation>
|
||
), towards the apices on the same level as the virgae (Fig.
|
||
<figureCitation id="A5F2ED69CE553B586ABDC9CF5F5A5576" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Gomphonema vancampianum sp. nov. SEM micrographs taken from the holotype material (BR- 4839, Lac du Drapeau, Sample DRAPEAU-U 03 VEG, France) A SEM external view of the headpole in girdle view showing the marginal crest on both valves, the larger, reniformly occluded upper areolae and the smaller, more distant areolae towards the mantle edge. Note also the slit-like pores on the girdle band B SEM external detail of the upper valve part of a valve bearing a crest showing the lowering marginal crest at the apex C SEM external view of an entire crest-bearing valve. Note the shallow depressions in the axial area D SEM external view of valve without marginal crest. Note the shallow depressions in the axial area and the valve face striae continuing over the valve face / mantle junction E SEM external detail of the central area with the depressed large areolae and the stigmoid. The shallow pit-like depressions are well visible in the axial area F SEM external detail of the footpole with the distal raphe fissure bisecting the apical pore field. Scale bars: 10 µm (A – D), 5 µm (E – F)." figureDoi="10.3897/phytokeys.244.122153.figure2" httpUri="https://binary.pensoft.net/fig/1082881">2 F</figureCitation>
|
||
). Stigmoid external opening small, rounded, sunken into valve face (Fig.
|
||
<figureCitation id="7F9D4923FFBB008B2018B88C1AF3995A" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Gomphonema vancampianum sp. nov. SEM micrographs taken from the holotype material (BR- 4839, Lac du Drapeau, Sample DRAPEAU-U 03 VEG, France) A SEM external view of the headpole in girdle view showing the marginal crest on both valves, the larger, reniformly occluded upper areolae and the smaller, more distant areolae towards the mantle edge. Note also the slit-like pores on the girdle band B SEM external detail of the upper valve part of a valve bearing a crest showing the lowering marginal crest at the apex C SEM external view of an entire crest-bearing valve. Note the shallow depressions in the axial area D SEM external view of valve without marginal crest. Note the shallow depressions in the axial area and the valve face striae continuing over the valve face / mantle junction E SEM external detail of the central area with the depressed large areolae and the stigmoid. The shallow pit-like depressions are well visible in the axial area F SEM external detail of the footpole with the distal raphe fissure bisecting the apical pore field. Scale bars: 10 µm (A – D), 5 µm (E – F)." figureDoi="10.3897/phytokeys.244.122153.figure2" httpUri="https://binary.pensoft.net/fig/1082881">2 E</figureCitation>
|
||
). Internally valve face surface smooth (Fig.
|
||
<figureCitation id="498C532386A0037BC51A8592174886A0" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Gomphonema vancampianum sp. nov. SEM micrographs taken from the holotype material (BR- 4839, Lac du Drapeau, Sample DRAPEAU-U 03 VEG, France) A SEM internal view of an entire valve B SEM internal detail of the central area with the stigmoid located in a long depression, the hooked central raphe endings and the long foramina with the areolae C SEM internal detail of the areolae with the small silica struts D SEM internal detail of the footpole with the small pseudoseptum, the helictoglossa and the apical pore field E SEM external view of an entire valve with marginal crest from Lac du Réaltor, Provence, France (photo courtesy of Dr Carlos E. Wetzel). Scale bars: 10 µm (A, E), 1 µm (B – D)." figureDoi="10.3897/phytokeys.244.122153.figure3" httpUri="https://binary.pensoft.net/fig/1082882">3 A</figureCitation>
|
||
). Small pseudoseptum visible at footpole (Fig.
|
||
<figureCitation id="2D44CA4695E6FC4F9DC4B3FE7ED91C0A" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Gomphonema vancampianum sp. nov. SEM micrographs taken from the holotype material (BR- 4839, Lac du Drapeau, Sample DRAPEAU-U 03 VEG, France) A SEM internal view of an entire valve B SEM internal detail of the central area with the stigmoid located in a long depression, the hooked central raphe endings and the long foramina with the areolae C SEM internal detail of the areolae with the small silica struts D SEM internal detail of the footpole with the small pseudoseptum, the helictoglossa and the apical pore field E SEM external view of an entire valve with marginal crest from Lac du Réaltor, Provence, France (photo courtesy of Dr Carlos E. Wetzel). Scale bars: 10 µm (A, E), 1 µm (B – D)." figureDoi="10.3897/phytokeys.244.122153.figure3" httpUri="https://binary.pensoft.net/fig/1082882">3 A, D</figureCitation>
|
||
). Striae located in shallow, narrow foraminal rows. Side walls of the areolae with continuous apical bars or small interrupted struts (Fig.
|
||
<figureCitation id="57B5943B858118C7570FC1A81C3C1CE8" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Gomphonema vancampianum sp. nov. SEM micrographs taken from the holotype material (BR- 4839, Lac du Drapeau, Sample DRAPEAU-U 03 VEG, France) A SEM internal view of an entire valve B SEM internal detail of the central area with the stigmoid located in a long depression, the hooked central raphe endings and the long foramina with the areolae C SEM internal detail of the areolae with the small silica struts D SEM internal detail of the footpole with the small pseudoseptum, the helictoglossa and the apical pore field E SEM external view of an entire valve with marginal crest from Lac du Réaltor, Provence, France (photo courtesy of Dr Carlos E. Wetzel). Scale bars: 10 µm (A, E), 1 µm (B – D)." figureDoi="10.3897/phytokeys.244.122153.figure3" httpUri="https://binary.pensoft.net/fig/1082882">3 C</figureCitation>
|
||
, arrows). Internal opening of the stigmoid short, transversely elongated, located in a long, shallow groove (Fig.
|
||
<figureCitation id="B9FCD4A272A8C3658BA39445DF8F51AE" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Gomphonema vancampianum sp. nov. SEM micrographs taken from the holotype material (BR- 4839, Lac du Drapeau, Sample DRAPEAU-U 03 VEG, France) A SEM internal view of an entire valve B SEM internal detail of the central area with the stigmoid located in a long depression, the hooked central raphe endings and the long foramina with the areolae C SEM internal detail of the areolae with the small silica struts D SEM internal detail of the footpole with the small pseudoseptum, the helictoglossa and the apical pore field E SEM external view of an entire valve with marginal crest from Lac du Réaltor, Provence, France (photo courtesy of Dr Carlos E. Wetzel). Scale bars: 10 µm (A, E), 1 µm (B – D)." figureDoi="10.3897/phytokeys.244.122153.figure3" httpUri="https://binary.pensoft.net/fig/1082882">3 B</figureCitation>
|
||
). Central raphe endings long, right-angled, hook-shaped (Fig.
|
||
<figureCitation id="E28D1E86F5443BE1E2D008E4FAB54755" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Gomphonema vancampianum sp. nov. SEM micrographs taken from the holotype material (BR- 4839, Lac du Drapeau, Sample DRAPEAU-U 03 VEG, France) A SEM internal view of an entire valve B SEM internal detail of the central area with the stigmoid located in a long depression, the hooked central raphe endings and the long foramina with the areolae C SEM internal detail of the areolae with the small silica struts D SEM internal detail of the footpole with the small pseudoseptum, the helictoglossa and the apical pore field E SEM external view of an entire valve with marginal crest from Lac du Réaltor, Provence, France (photo courtesy of Dr Carlos E. Wetzel). Scale bars: 10 µm (A, E), 1 µm (B – D)." figureDoi="10.3897/phytokeys.244.122153.figure3" httpUri="https://binary.pensoft.net/fig/1082882">3 B</figureCitation>
|
||
). Terminal raphe endings terminating on to well-developed helictoglossae (Fig.
|
||
<figureCitation id="9DE895E3C1F857250BA5000B4ED36762" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Gomphonema vancampianum sp. nov. SEM micrographs taken from the holotype material (BR- 4839, Lac du Drapeau, Sample DRAPEAU-U 03 VEG, France) A SEM internal view of an entire valve B SEM internal detail of the central area with the stigmoid located in a long depression, the hooked central raphe endings and the long foramina with the areolae C SEM internal detail of the areolae with the small silica struts D SEM internal detail of the footpole with the small pseudoseptum, the helictoglossa and the apical pore field E SEM external view of an entire valve with marginal crest from Lac du Réaltor, Provence, France (photo courtesy of Dr Carlos E. Wetzel). Scale bars: 10 µm (A, E), 1 µm (B – D)." figureDoi="10.3897/phytokeys.244.122153.figure3" httpUri="https://binary.pensoft.net/fig/1082882">3 D</figureCitation>
|
||
).
|
||
</paragraph>
|
||
<caption id="0155E443C8095FCEDE1B7B26CB2871DE" ID-DOI="10.3897/phytokeys.244.122153.figure2" ID-arpha="B18B953A-7650-5472-A29C-6BE0BF0CAC28" httpUri="https://binary.pensoft.net/fig/1082881" startId="F2">
|
||
<paragraph id="2013B310759D59F13780A9F81BBFE64D">
|
||
<label id="ABE64C59523FDF84F287E00F1FCAB566">Figure 2.</label>
|
||
</paragraph>
|
||
<paragraph id="B20A84828550FDA159A0C706D8D5AA27">
|
||
<taxonomicName id="AB32841CFAB7D47F16D4BC1DF8F35706" authorityName="Van de Vijver & Pottiez & Chavaux" authorityYear="2024" class="Bacillariophyceae" family="Gomphonemataceae" genus="Gomphonema" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" phylum="Ochrophyta" rank="species" species="vancampianum" status="sp. nov.">
|
||
<emphasis id="43D22592B5D982E9CB03F8126E508856" italics="true">Gomphonema vancampianum</emphasis>
|
||
</taxonomicName>
|
||
<taxonomicNameLabel id="BBAA127B800928E5053B19AB5F5C65C7" rank="species">sp. nov.</taxonomicNameLabel>
|
||
SEM micrographs taken from the holotype material (BR- 4839, Lac du Drapeau, Sample DRAPEAU-U 03 VEG, France)
|
||
<emphasis id="B6880AF44FD248E88B0FD9FFDA8B284B" bold="true">A</emphasis>
|
||
SEM external view of the headpole in girdle view showing the marginal crest on both valves, the larger, reniformly occluded upper areolae and the smaller, more distant areolae towards the mantle edge. Note also the slit-like pores on the girdle band
|
||
<emphasis id="0FB07EB37203C4EB8F730C680E172139" bold="true">B</emphasis>
|
||
SEM external detail of the upper valve part of a valve bearing a crest showing the lowering marginal crest at the apex
|
||
<emphasis id="2EC7DB9B86A7DC5D822C200656EB4356" bold="true">C</emphasis>
|
||
SEM external view of an entire crest-bearing valve. Note the shallow depressions in the axial area
|
||
<emphasis id="7005C564D057926720E4A07C8357E3F0" bold="true">D</emphasis>
|
||
SEM external view of valve without marginal crest. Note the shallow depressions in the axial area and the valve face striae continuing over the valve face / mantle junction
|
||
<emphasis id="239B15B4FD6D390039737FE71236959C" bold="true">E</emphasis>
|
||
SEM external detail of the central area with the depressed large areolae and the stigmoid. The shallow pit-like depressions are well visible in the axial area
|
||
<emphasis id="8C7800DD2869A6C30B6D507A94AE7F2F" bold="true">F</emphasis>
|
||
SEM external detail of the footpole with the distal raphe fissure bisecting the apical pore field. Scale bars: 10 µm (
|
||
<emphasis id="07564BA56CD2BAA44AC52CD4609404CF" bold="true">A – D</emphasis>
|
||
), 5 µm (
|
||
<emphasis id="9CB561FC98BD06B0ADDEED465A183708" bold="true">E – F</emphasis>
|
||
).
|
||
</paragraph>
|
||
</caption>
|
||
</subSubSection>
|
||
<subSubSection id="SECID0EBCAE" type="distribution">
|
||
<paragraph id="2DB6DFB772B09B5D5E72CE1A00163196">
|
||
<heading id="89A30D86CFA174C6042C6A14EC9AA0F1" reason="title">Distribution and ecology.</heading>
|
||
</paragraph>
|
||
<paragraph id="AC05EB4942E147EDE2DB40CB353E3CEC">
|
||
<taxonomicName id="AC40836B960F15664B5F999E15D4DBE4" authorityName="Van de Vijver & Pottiez & Chavaux" authorityYear="2024" class="Bacillariophyceae" family="Gomphonemataceae" genus="Gomphonema" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" phylum="Ochrophyta" rank="species" species="vancampianum">
|
||
<emphasis id="6C499E8822BEC358D04DA3E117CD686C" italics="true">Gomphonema vancampianum</emphasis>
|
||
</taxonomicName>
|
||
has so far only been found in several samples from the type locality in
|
||
<collectingCountry id="63B66B9E6000054DA27A4DFCF75B748C" name="France">France</collectingCountry>
|
||
. The largest population was found in a sample collected from submerged aquatic plants. The diatom flora is dominated by species typically found in calcium-carbonate rich, oligotrophic lakes with low nutrient concentrations and low saprobity. The sample is dominated by several cymbelloid taxa (e. g.
|
||
<taxonomicName id="27DB954B772C6AE94FCC3594D90E9FEF" authority="Krammer & E. Reichardt" authorityName="Krammer & E. Reichardt" authorityYear="1997" class="Bacillariophyceae" family="Cymbellaceae" genus="Encyonopsis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" phylum="Ochrophyta" rank="species" species="subminuta">
|
||
<emphasis id="0A8DDD6663579BFB96F235B6734F226A" italics="true">Encyonopsis subminuta</emphasis>
|
||
Krammer & E. Reichardt
|
||
</taxonomicName>
|
||
,
|
||
<taxonomicName id="A5E271DC4E304F99FA17E1B594FEA59B" authority="Krammer" authorityName="Krammer" authorityYear="2002" class="Agaricomycetes" family="Hymenogastraceae" genus="Cymbella" kingdom="Fungi" order="Agaricales" phylum="Basidiomycota" rank="species" species="affiniformis">
|
||
<emphasis id="3180658237FFD2A5A79118488767CB40" italics="true">Cymbella affiniformis</emphasis>
|
||
Krammer
|
||
</taxonomicName>
|
||
,
|
||
<taxonomicName id="80F266B53019BC2673C3B254661888BC" authority="Krammer" authorityName="Krammer" authorityYear="2002" class="Agaricomycetes" family="Hymenogastraceae" genus="Cymbella" kingdom="Fungi" order="Agaricales" phylum="Basidiomycota" rank="species" species="lange-bertalotii">
|
||
<emphasis id="E4F246D45F6B73413F56BB790E9F6A3C" italics="true">C. lange-bertalotii</emphasis>
|
||
Krammer
|
||
</taxonomicName>
|
||
,
|
||
<taxonomicName id="C1C2E654667F5A43E0A3B4246AE9044B" authority="(Nageli) Krammer" authorityName="Krammer" baseAuthorityName="Nageli" class="Bacillariophyceae" family="Cymbellaceae" genus="Cymbopleura" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" phylum="Ochrophyta" rank="species" species="amphicephala">
|
||
<emphasis id="626C471E5E1858B19451B276E67F0D3C" italics="true">Cymbopleura amphicephala</emphasis>
|
||
(Nägeli) Krammer
|
||
</taxonomicName>
|
||
) together with a, so far, unidentified, long-celled
|
||
<taxonomicName id="70B2D0904BCCFC2B089F29F9132B4E8A">
|
||
<emphasis id="BBE00B7EEE39CD8DF8C24D950237C915" italics="true">Fragilaria</emphasis>
|
||
species
|
||
</taxonomicName>
|
||
,
|
||
<taxonomicName id="CC0B9A10F8C59DE69E3F60C5A5B494FA" authority="Lange-Bertalot" authorityName="Lange-Bertalot" authorityYear="1994" class="Bacillariophyceae" family="Brachysiraceae" genus="Brachysira" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" phylum="Ochrophyta" rank="species" species="neoexilis">
|
||
<emphasis id="0265A8BEBB9D530FC95C3F7443A9D0BB" italics="true">Brachysira neoexilis</emphasis>
|
||
Lange-Bertalot
|
||
</taxonomicName>
|
||
,
|
||
<taxonomicName id="C351792F28AA7BEC47654C74C9F1AB96" authority="Cantonati et al." authorityName="Cantonati" class="Bacillariophyceae" family="Brachysiraceae" genus="Brachysira" higherTaxonomySource="GBIF" isUncertain="true" kingdom="Chromista" order="Naviculales" phylum="Ochrophyta" rank="species" species="chiaruccii">
|
||
<emphasis id="D061EB7886AE981286D4DBDE914CDAE9" italics="true">B.</emphasis>
|
||
cf.
|
||
<emphasis id="DD263FFE02CF8D6A34A5E4824FB09CB5" italics="true">chiaruccii</emphasis>
|
||
Cantonati et al.
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName id="275A18E907D14444EBE25B5676909AB2" authority="Hustedt" authorityName="Hustedt" authorityYear="1922" class="Insecta" family="Menoponidae" genus="Nitzschia" isUncertain="true" kingdom="Animalia" order="Psocodea" phylum="Arthropoda" rank="species" species="subacicularis">
|
||
<emphasis id="C7F0B7D9689E7315849FF995F35FD6EB" italics="true">Nitzschia</emphasis>
|
||
cf.
|
||
<emphasis id="428FFF91E1670B0F46F144C4C22FB8F1" italics="true">subacicularis</emphasis>
|
||
Hustedt
|
||
</taxonomicName>
|
||
, all indicating the environmental conditions mentioned above (
|
||
<bibRefCitation id="1A51E8B9BBF256545513FA7934C2B8DF" author="Lange-Bertalot" etAl="et al." firstAuthor="Lange-Bertalot" journalOrPublisher="Koeltz Botanical Books, Schmitten-Oberreifenberg" refId="B16" refString="Lange-Bertalot H, Hofmann G, Werum M, Cantonati M (2017) Freshwater benthic diatoms of Central Europe: over 800 common species used in ecological assessment. English edition with updated taxonomy and added species. Koeltz Botanical Books, Schmitten-Oberreifenberg, 942 pp." title="Freshwater benthic diatoms of Central Europe: over 800 common species used in ecological assessment. English edition with updated taxonomy and added species." year="2017">Lange-Bertalot et al. 2017</bibRefCitation>
|
||
). The species has also been found in several other French lakes, such as Lac du Réaltor (Provence,
|
||
<collectingCountry id="BFF3EFEC0E8EA943D22E24D29BA0ACC9" name="France">France</collectingCountry>
|
||
) (Fig.
|
||
<figureCitation id="C52264B88F042472D0754AD8915376A2" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Gomphonema vancampianum sp. nov. SEM micrographs taken from the holotype material (BR- 4839, Lac du Drapeau, Sample DRAPEAU-U 03 VEG, France) A SEM internal view of an entire valve B SEM internal detail of the central area with the stigmoid located in a long depression, the hooked central raphe endings and the long foramina with the areolae C SEM internal detail of the areolae with the small silica struts D SEM internal detail of the footpole with the small pseudoseptum, the helictoglossa and the apical pore field E SEM external view of an entire valve with marginal crest from Lac du Réaltor, Provence, France (photo courtesy of Dr Carlos E. Wetzel). Scale bars: 10 µm (A, E), 1 µm (B – D)." figureDoi="10.3897/phytokeys.244.122153.figure3" httpUri="https://binary.pensoft.net/fig/1082882">3 E</figureCitation>
|
||
) by Luc Ector and Carlos E. Wetzel (
|
||
<collectionCode id="7C2559E92C36F93479A2FB1B1D9F7054">LIST</collectionCode>
|
||
<collectingCountry id="107729E4ECC17E7AD83FE95AE81A0D16" name="Luxembourg">Luxemburg</collectingCountry>
|
||
) who, despite an exhaustive review of existing
|
||
<taxonomicName id="6E4255D6405533EB6E8DC38D81A316E1" class="Bacillariophyceae" family="Gomphonemataceae" genus="Gomphonema" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" phylum="Ochrophyta" rank="genus">
|
||
<emphasis id="6080EC88A82BBFF0644C1603BC27B64A" italics="true">Gomphonema</emphasis>
|
||
</taxonomicName>
|
||
literature, could not assign a name to this species (Wetzel, pers. comm.). It is likely that the species is more abundant than currently known due to confusion with similar taxa, such as
|
||
<taxonomicName id="92AB7C2264EC16243A055195B5118563" authority="Lange-Bertalot & E. Reichardt" authorityName="Lange-Bertalot & E. Reichardt" authorityYear="1996" class="Bacillariophyceae" family="Gomphonemataceae" genus="Gomphonema" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" phylum="Ochrophyta" rank="species" species="jadwigiae">
|
||
<emphasis id="568FCA378C78FDED793E7D209253937D" italics="true">G. jadwigiae</emphasis>
|
||
Lange-Bertalot & E. Reichardt
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName id="0B9966010A62E6F659A1649FB70B78A5" authority="Ehrenberg" authorityName="Ehrenberg" authorityYear="1843" class="Bacillariophyceae" family="Gomphonemataceae" genus="Gomphonema" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" phylum="Ochrophyta" rank="species" species="turris">
|
||
<emphasis id="0889493CD5E44AE4991813FA67B97A99" italics="true">G. turris</emphasis>
|
||
Ehrenberg
|
||
</taxonomicName>
|
||
(see Discussion below).
|
||
</paragraph>
|
||
<caption id="E73A0594B0325339A1BE13A00B9D23D8" ID-DOI="10.3897/phytokeys.244.122153.figure3" ID-arpha="E57D7E8B-B463-50ED-9733-7CA0FD90BC9D" httpUri="https://binary.pensoft.net/fig/1082882" startId="F3">
|
||
<paragraph id="2BF5D9F0A1C5554B4DE56737F4B9D587">
|
||
<label id="DDEA5A07D73F690224B4D54BCFAB824D">Figure 3.</label>
|
||
</paragraph>
|
||
<paragraph id="3D34C06C962F29552D3994CA0A84B086">
|
||
<taxonomicName id="97E25BE2B617EAC5C46EEFCDA7162D82" authorityName="Van de Vijver & Pottiez & Chavaux" authorityYear="2024" class="Bacillariophyceae" family="Gomphonemataceae" genus="Gomphonema" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" phylum="Ochrophyta" rank="species" species="vancampianum" status="sp. nov.">
|
||
<emphasis id="FE848F17DE42DDB7FAA3755317B5F220" italics="true">Gomphonema vancampianum</emphasis>
|
||
</taxonomicName>
|
||
<taxonomicNameLabel id="B02BEA75BF72104815282AFB72329154" rank="species">sp. nov.</taxonomicNameLabel>
|
||
SEM micrographs taken from the holotype material (BR- 4839, Lac du Drapeau, Sample DRAPEAU-U 03 VEG, France)
|
||
<emphasis id="A5CCE18240DA0F8435DEFAF9DBCB45CC" bold="true">A</emphasis>
|
||
SEM internal view of an entire valve
|
||
<emphasis id="2F5A3F36B4BB066BB8690CA0E69E93A6" bold="true">B</emphasis>
|
||
SEM internal detail of the central area with the stigmoid located in a long depression, the hooked central raphe endings and the long foramina with the areolae
|
||
<emphasis id="6FB3D3D88D0F5A9F691CA6454F901FEC" bold="true">C</emphasis>
|
||
SEM internal detail of the areolae with the small silica struts
|
||
<emphasis id="749159B7A204618E214ADE11C7890AA0" bold="true">D</emphasis>
|
||
SEM internal detail of the footpole with the small pseudoseptum, the helictoglossa and the apical pore field
|
||
<emphasis id="0F876B4A2225A7FA50355E74845BCC0C" bold="true">E</emphasis>
|
||
SEM external view of an entire valve with marginal crest from Lac du Réaltor, Provence, France (photo courtesy of Dr Carlos E. Wetzel). Scale bars: 10 µm (
|
||
<emphasis id="5476C09A9614C5885F5037EC8E88ED65" bold="true">A, E</emphasis>
|
||
), 1 µm (
|
||
<emphasis id="BDB972B7EC41F79A91E590991D3AEBE9" bold="true">B – D</emphasis>
|
||
).
|
||
</paragraph>
|
||
</caption>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |