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<document ID-DOI="http://dx.doi.org/10.3897/phytokeys.228.101080" ID-Pensoft-Pub="1314-2003-228-1" ID-Pensoft-UUID="576A4D0BFA9A5B62B60571F9F54D9E9F" ModsDocID="1314-2003-228-1" checkinTime="1687555800880" checkinUser="pensoft" docAuthor="Liu, Bing" docDate="2023" docId="82643DCA64CC50BBA3EAF40492A5647F" docLanguage="en" docName="PhytoKeys 228: 1-118" docOrigin="PhytoKeys 228" docPubDate="2023-06-23" docSource="http://dx.doi.org/10.3897/phytokeys.228.101080" docTitle="Ulnaria chengduoensis Bing Liu 2023, sp. nov." docType="treatment" docVersion="1" id="576A4D0BFA9A5B62B60571F9F54D9E9F" lastPageNumber="1" masterDocId="576A4D0BFA9A5B62B60571F9F54D9E9F" masterDocTitle="The diatom genus Ulnaria (Bacillariophyta) in China" masterLastPageNumber="118" masterPageNumber="1" pageNumber="1" updateTime="1687555800880" updateUser="pensoft">
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<mods:title id="56EE9458F031C9206EF5FDB3D79A906F">The diatom genus Ulnaria (Bacillariophyta) in China</mods:title>
</mods:titleInfo>
<mods:name id="1533AFE35960BD08816D81A95E8874BA" type="personal">
<mods:role id="0150D8F03B318A5CA5679AC11002D790">
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<mods:namePart id="87FFB15D024CCB3FF2928DF7C4DEB930">Liu, Bing</mods:namePart>
<mods:nameIdentifier id="FFF50E8EF026158BD88397D28C90CAB6" type="ORCID">https://orcid.org/0000-0002-8516-325X</mods:nameIdentifier>
<mods:affiliation id="33D7D518581704246E7BA6B8D153A187">College of Biology and Environmental Sciences, Jishou University, Jishou 416000, China</mods:affiliation>
<mods:nameIdentifier id="1D13E186C47B8125B18293D8C04B19AB" type="email">jsulb@outlook.com</mods:nameIdentifier>
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<mods:title id="4EA1F12051A422AB04A1787F2752F61B">PhytoKeys</mods:title>
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<mods:date id="6F287B451F0232283CD875FAE7767CE5">2023</mods:date>
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<mods:number id="6E85B6B044F13052F93536AA708CA434">2023-06-23</mods:number>
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<mods:url id="3992CDBFE3EBC93320B394D6BFA6087A">http://dx.doi.org/10.3897/phytokeys.228.101080</mods:url>
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<mods:classification id="EDB65B7ED0F32BA83D0038A442EF581F">journal article</mods:classification>
<mods:identifier id="9A4026659CDB8BE7AECF09F45089A7F7" type="DOI">http://dx.doi.org/10.3897/phytokeys.228.101080</mods:identifier>
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<treatment id="82643DCA64CC50BBA3EAF40492A5647F" LSID="urn:lsid:plazi:treatment:82643DCA64CC50BBA3EAF40492A5647F" httpUri="http://treatment.plazi.org/id/82643DCA64CC50BBA3EAF40492A5647F" lastPageNumber="1" pageId="0" pageNumber="1">
<subSubSection id="25DDEE50CC850BD68AD017609E8A07F3" pageId="0" pageNumber="1" type="nomenclature">
<paragraph id="3146675C54D6AD70C50DF76F955E66D9" pageId="0" pageNumber="1">
<taxonomicName id="C4E33B4240023A46A21C2402BF2370E9" LSID="82643DCA-64CC-50BB-A3EA-F40492A5647F" authority="Bing Liu" authorityName="Bing Liu" authorityYear="2023" class="Bacillariophyceae" family="Ulnariaceae" genus="Ulnaria" higherTaxonomySource="treatment-meta" kingdom="Plantae" lsidName="Ulnaria chengduoensis" order="Licmophorales" pageId="0" pageNumber="1" phylum="Bacillariophyta" rank="species" species="chengduoensis" status="sp. nov.">Ulnaria chengduoensis Bing Liu</taxonomicName>
<taxonomicNameLabel id="4A10F663B9E63F06C42C0A15FEE9AE4B" pageId="0" pageNumber="1">sp. nov.</taxonomicNameLabel>
</paragraph>
</subSubSection>
<subSubSection id="119C3040B79D8031FD472BBA590F7AFC" pageId="0" pageNumber="1" type="description">
<paragraph id="9FFBDB2EF718C2B51EBE4A0E93670B82" pageId="0" pageNumber="1">
<figureCitation id="B47EB0E10DBEC3C231405D3FB835B4AF" captionStart="Figure 54" captionStartId="F54" captionText="Figure 54. Ulnaria chengduoensis sp. nov., x 1000, LM A-P sixteen valves exhibiting a size diminution series, note the linear-lanceolate valve outline and variable central areas A micrograph of holotype specimen. Scale bar: 10 μm." figureDoi="10.3897/phytokeys.228.101080.figure54" httpUri="https://binary.pensoft.net/fig/867642" pageId="0" pageNumber="1">Figs 54</figureCitation>
<figureCitation id="8C93DDDEC0ED6FC79C792F2B42C6B16B" captionStart="Figure 55" captionStartId="F55" captionText="Figure 55. Ulnaria chengduoensis sp. nov., external view, SEM A a broken valve B middle part detail from A, note the central area flanked by marginal short striae C, D two apical details from A, note the rostrate apices E a complete valve F middle part detail from E, note central area absent. Scale bars: 10 μm (A, E); 2 μm (B-D, F)." figureDoi="10.3897/phytokeys.228.101080.figure55" httpUri="https://binary.pensoft.net/fig/867643" pageId="0" pageNumber="1">, 55</figureCitation>
<figureCitation id="147AF475C8061C8C9D05B3F60C16F66C" captionStart="Figure 56" captionStartId="F56" captionText="Figure 56. Ulnaria chengduoensis sp. nov., internal view, SEM A-C three complete valves, note the linear-lanceolate valve outlines and variable central areas D-F details from C, note rostrate apices and absent central area. Scale bars: 10 μm (A-C); 2 μm (D, E); 1 μm (F)." figureDoi="10.3897/phytokeys.228.101080.figure56" httpUri="https://binary.pensoft.net/fig/867644" pageId="0" pageNumber="1">, 56</figureCitation>
</paragraph>
</subSubSection>
<subSubSection id="19ACD632325501664075577ED2AE2B6C" pageId="0" pageNumber="1" type="holotype">
<paragraph id="195857FFBF39F695650104A9BD969596" pageId="0" pageNumber="1">Holotype.</paragraph>
<paragraph id="F14889EAC0D774A1B854EA0CC8396E12" pageId="0" pageNumber="1">
Slide JIUDIA202309, specimen circled on slide, illustrated as Fig.
<figureCitation id="42272D21118FEAC716A1A1D61ECB2D6C" captionStart="Figure 54" captionStartId="F54" captionText="Figure 54. Ulnaria chengduoensis sp. nov., x 1000, LM A-P sixteen valves exhibiting a size diminution series, note the linear-lanceolate valve outline and variable central areas A micrograph of holotype specimen. Scale bar: 10 μm." figureDoi="10.3897/phytokeys.228.101080.figure54" httpUri="https://binary.pensoft.net/fig/867642" pageId="0" pageNumber="1">54A</figureCitation>
.
</paragraph>
</subSubSection>
<subSubSection id="5CF2F4FD5A319F52CCC51C5547461244" pageId="0" pageNumber="1" type="registration">
<paragraph id="596E3F16E5450DFA088C6FD19571BF11" pageId="0" pageNumber="1">Registration.</paragraph>
<paragraph id="FFF1A5B7C1D4619D526E9B9C1288C7DF" pageId="0" pageNumber="1">PhycoBank http://phycobank.org/103815.</paragraph>
</subSubSection>
<subSubSection id="84D92F37068537FB444B5F81B3656E51" pageId="0" pageNumber="1" type="type locality">
<paragraph id="B067E3FA9C03573DD10E84047258975E" pageId="0" pageNumber="1">Type locality.</paragraph>
<paragraph id="F1FF443713F65E6C592A5312A4023B77" pageId="0" pageNumber="1">
China. Qinghai province: Chengduo County, Baima River, at a sampling location (
<geoCoordinate id="1A6EA5DA5DCB539F14A1EE9A8D12DB8A" degrees="33" direction="north" minutes="22" orientation="latitude" precision="15" seconds="21" value="33.372498">33°22'21&quot;N</geoCoordinate>
,
<geoCoordinate id="ACF2CB923FF6C23782709704FE1EB420" degrees="97" direction="east" minutes="0" orientation="longitude" precision="15" seconds="18" value="97.005">97°0'18&quot;E</geoCoordinate>
, 3690 m a.s.l.), collected by Bing Liu, July 22, 2019.
</paragraph>
</subSubSection>
<subSubSection id="6919C1182AEDA071F15FD19AEF66273D" pageId="0" pageNumber="1" type="description">
<paragraph id="22A27D8EAAC6F2AF5BD769CA14BA4950" pageId="0" pageNumber="1">Description.</paragraph>
<paragraph id="4ECC18CB4443E037427C2EB1D4986DD1" pageId="0" pageNumber="1">
<emphasis id="0BFD10C209E7947E2DE9B5EA62D9772D" bold="true" italics="true" pageId="0" pageNumber="1">LM</emphasis>
(Fig.
<figureCitation id="07C9A135D9E1C18EF466D30970F6DF2C" captionStart="Figure 54" captionStartId="F54" captionText="Figure 54. Ulnaria chengduoensis sp. nov., x 1000, LM A-P sixteen valves exhibiting a size diminution series, note the linear-lanceolate valve outline and variable central areas A micrograph of holotype specimen. Scale bar: 10 μm." figureDoi="10.3897/phytokeys.228.101080.figure54" httpUri="https://binary.pensoft.net/fig/867642" pageId="0" pageNumber="1">54</figureCitation>
). Valves linear with rostrate apices (Fig.
<figureCitation id="A24B3ADB748652D147D352CA8038D0D9" captionStart="Figure 54" captionStartId="F54" captionText="Figure 54. Ulnaria chengduoensis sp. nov., x 1000, LM A-P sixteen valves exhibiting a size diminution series, note the linear-lanceolate valve outline and variable central areas A micrograph of holotype specimen. Scale bar: 10 μm." figureDoi="10.3897/phytokeys.228.101080.figure54" httpUri="https://binary.pensoft.net/fig/867642" pageId="0" pageNumber="1">54A-P</figureCitation>
, see also Figs
<figureCitation id="9AE7C8BCFE9AB3F36E5B9CD6C148BA7D" captionStart="Figure 55" captionStartId="F55" captionText="Figure 55. Ulnaria chengduoensis sp. nov., external view, SEM A a broken valve B middle part detail from A, note the central area flanked by marginal short striae C, D two apical details from A, note the rostrate apices E a complete valve F middle part detail from E, note central area absent. Scale bars: 10 μm (A, E); 2 μm (B-D, F)." figureDoi="10.3897/phytokeys.228.101080.figure55" httpUri="https://binary.pensoft.net/fig/867643" pageId="0" pageNumber="1">55E</figureCitation>
,
<figureCitation id="7D85216A4737446DC5731F4B97192902" captionStart="Figure 56" captionStartId="F56" captionText="Figure 56. Ulnaria chengduoensis sp. nov., internal view, SEM A-C three complete valves, note the linear-lanceolate valve outlines and variable central areas D-F details from C, note rostrate apices and absent central area. Scale bars: 10 μm (A-C); 2 μm (D, E); 1 μm (F)." figureDoi="10.3897/phytokeys.228.101080.figure56" httpUri="https://binary.pensoft.net/fig/867644" pageId="0" pageNumber="1">56A-C</figureCitation>
). Valve dimensions (n = 51): length 42-66
<normalizedToken id="77A4FC3179527C9922724B69C15A98CC" originalValue="μm">μm</normalizedToken>
, width 6-8
<normalizedToken id="73851B4194EA2ECFB5D99CCB41F39101" originalValue="μm">μm</normalizedToken>
at centre. Sternum distinct, extending length of valve. Central area not clearly visible due to presence of ghost striae (Fig.
<figureCitation id="E6808290C066693224D2E4EFA0AD9F33" captionStart="Figure 54" captionStartId="F54" captionText="Figure 54. Ulnaria chengduoensis sp. nov., x 1000, LM A-P sixteen valves exhibiting a size diminution series, note the linear-lanceolate valve outline and variable central areas A micrograph of holotype specimen. Scale bar: 10 μm." figureDoi="10.3897/phytokeys.228.101080.figure54" httpUri="https://binary.pensoft.net/fig/867642" pageId="0" pageNumber="1">54A-G, I-K, M</figureCitation>
) or completely lacking (Fig.
<figureCitation id="BED65B61B1FC15317E7B20384D3DBAF0" captionStart="Figure 54" captionStartId="F54" captionText="Figure 54. Ulnaria chengduoensis sp. nov., x 1000, LM A-P sixteen valves exhibiting a size diminution series, note the linear-lanceolate valve outline and variable central areas A micrograph of holotype specimen. Scale bar: 10 μm." figureDoi="10.3897/phytokeys.228.101080.figure54" httpUri="https://binary.pensoft.net/fig/867642" pageId="0" pageNumber="1">54H, L, N-P</figureCitation>
). Striae parallel, radiate only approaching each pole, 12-15 in 10
<normalizedToken id="A5B87D62FB4FA2E0D5C539B1E41806A2" originalValue="μm">μm</normalizedToken>
. Across sternum some striae opposite one another, others alternate.
</paragraph>
<caption id="16F23C9C7437C73B47E07214A3AD56DC" doi="10.3897/phytokeys.228.101080.figure54" httpUri="https://binary.pensoft.net/fig/867642" pageId="0" pageNumber="1" start="Figure 54" startId="F54">
<paragraph id="F0B70007B61EACDC5F5002226030E405" pageId="0" pageNumber="1">
<emphasis id="C5E3456AA55948837517F72442F9AA95" bold="true" pageId="0" pageNumber="1">Figure 54.</emphasis>
<taxonomicName id="9B4D041829D35602342DF5BF019C5D5F" authorityName="Bing Liu" authorityYear="2023" class="Bacillariophyceae" family="Ulnariaceae" genus="Ulnaria" kingdom="Plantae" lsidName="Ulnaria chengduoensis" order="Licmophorales" pageId="0" pageNumber="1" phylum="Bacillariophyta" rank="species" species="chengduoensis">
<emphasis id="70DFB1880B4C332F190F067F87FEA71D" italics="true" pageId="0" pageNumber="1">Ulnaria chengduoensis</emphasis>
</taxonomicName>
sp. nov.,
<normalizedToken id="0F505DD342180B888D51CF224CBD1B27" originalValue="×">x</normalizedToken>
1000, LM
<emphasis id="DA24BB01EC0527D703D0BEB7746C8300" bold="true" pageId="0" pageNumber="1">A-P</emphasis>
sixteen valves exhibiting a size diminution series, note the linear-lanceolate valve outline and variable central areas
<emphasis id="4BC4C4FFB64FC54542B3C475B185620B" bold="true" pageId="0" pageNumber="1">A</emphasis>
micrograph of holotype specimen. Scale bar: 10
<normalizedToken id="9B6FA426A728C33A1E38FA3EF8CBE5C4" originalValue="μm">μm</normalizedToken>
.
</paragraph>
</caption>
<paragraph id="7D141CC26A73D582C7753996DB471B51" pageId="0" pageNumber="1">
<emphasis id="9FFF72E0FEC4353883F5B2627C64781E" bold="true" italics="true" pageId="0" pageNumber="1">SEM</emphasis>
(Figs
<figureCitation id="46E921F1AE1A1836C894430D82B077A2" captionStart="Figure 55" captionStartId="F55" captionText="Figure 55. Ulnaria chengduoensis sp. nov., external view, SEM A a broken valve B middle part detail from A, note the central area flanked by marginal short striae C, D two apical details from A, note the rostrate apices E a complete valve F middle part detail from E, note central area absent. Scale bars: 10 μm (A, E); 2 μm (B-D, F)." figureDoi="10.3897/phytokeys.228.101080.figure55" httpUri="https://binary.pensoft.net/fig/867643" pageId="0" pageNumber="1">55</figureCitation>
,
<figureCitation id="5585A13CD70555508896A6B60194B45B" captionStart="Figure 56" captionStartId="F56" captionText="Figure 56. Ulnaria chengduoensis sp. nov., internal view, SEM A-C three complete valves, note the linear-lanceolate valve outlines and variable central areas D-F details from C, note rostrate apices and absent central area. Scale bars: 10 μm (A-C); 2 μm (D, E); 1 μm (F)." figureDoi="10.3897/phytokeys.228.101080.figure56" httpUri="https://binary.pensoft.net/fig/867644" pageId="0" pageNumber="1">56</figureCitation>
). Valve characterized by a series of relatively wide virgae, interconnected with vimines (Fig.
<figureCitation id="36AD88483D3D4B2149974505EC88F2CA" captionStart="Figure 55" captionStartId="F55" captionText="Figure 55. Ulnaria chengduoensis sp. nov., external view, SEM A a broken valve B middle part detail from A, note the central area flanked by marginal short striae C, D two apical details from A, note the rostrate apices E a complete valve F middle part detail from E, note central area absent. Scale bars: 10 μm (A, E); 2 μm (B-D, F)." figureDoi="10.3897/phytokeys.228.101080.figure55" httpUri="https://binary.pensoft.net/fig/867643" pageId="0" pageNumber="1">55B-D</figureCitation>
). Striae uniseriate, areolae often apically elongated (Fig.
<figureCitation id="2DEABBDDC68E2E913BE705BC00EDF45E" captionStart="Figure 56" captionStartId="F56" captionText="Figure 56. Ulnaria chengduoensis sp. nov., internal view, SEM A-C three complete valves, note the linear-lanceolate valve outlines and variable central areas D-F details from C, note rostrate apices and absent central area. Scale bars: 10 μm (A-C); 2 μm (D, E); 1 μm (F)." figureDoi="10.3897/phytokeys.228.101080.figure56" httpUri="https://binary.pensoft.net/fig/867644" pageId="0" pageNumber="1">56E</figureCitation>
). Central area variable: a hyaline area circumscribed by both short marginal striae and isolated areolae (Figs
<figureCitation id="F6AC42D3757191ADE206F67764948B18" captionStart="Figure 55" captionStartId="F55" captionText="Figure 55. Ulnaria chengduoensis sp. nov., external view, SEM A a broken valve B middle part detail from A, note the central area flanked by marginal short striae C, D two apical details from A, note the rostrate apices E a complete valve F middle part detail from E, note central area absent. Scale bars: 10 μm (A, E); 2 μm (B-D, F)." figureDoi="10.3897/phytokeys.228.101080.figure55" httpUri="https://binary.pensoft.net/fig/867643" pageId="0" pageNumber="1">55B</figureCitation>
,
<figureCitation id="19A8069F9DE0FC2BDD664CF9F6C16CF5" captionStart="Figure 56" captionStartId="F56" captionText="Figure 56. Ulnaria chengduoensis sp. nov., internal view, SEM A-C three complete valves, note the linear-lanceolate valve outlines and variable central areas D-F details from C, note rostrate apices and absent central area. Scale bars: 10 μm (A-C); 2 μm (D, E); 1 μm (F)." figureDoi="10.3897/phytokeys.228.101080.figure56" httpUri="https://binary.pensoft.net/fig/867644" pageId="0" pageNumber="1">56A, B</figureCitation>
), or completely absent (Figs
<figureCitation id="48D727DC65A984F74A499B804D0E044F" captionStart="Figure 55" captionStartId="F55" captionText="Figure 55. Ulnaria chengduoensis sp. nov., external view, SEM A a broken valve B middle part detail from A, note the central area flanked by marginal short striae C, D two apical details from A, note the rostrate apices E a complete valve F middle part detail from E, note central area absent. Scale bars: 10 μm (A, E); 2 μm (B-D, F)." figureDoi="10.3897/phytokeys.228.101080.figure55" httpUri="https://binary.pensoft.net/fig/867643" pageId="0" pageNumber="1">55F</figureCitation>
,
<figureCitation id="4918C7BA5D9D1DFD6EC6DED77B9FA5F6" captionStart="Figure 56" captionStartId="F56" captionText="Figure 56. Ulnaria chengduoensis sp. nov., internal view, SEM A-C three complete valves, note the linear-lanceolate valve outlines and variable central areas D-F details from C, note rostrate apices and absent central area. Scale bars: 10 μm (A-C); 2 μm (D, E); 1 μm (F)." figureDoi="10.3897/phytokeys.228.101080.figure56" httpUri="https://binary.pensoft.net/fig/867644" pageId="0" pageNumber="1">56E</figureCitation>
). One rimoportula located at each pole, externally expressed as a simple hole (Fig.
<figureCitation id="1C907EC0A70B8C69315298FC923832F1" captionStart="Figure 55" captionStartId="F55" captionText="Figure 55. Ulnaria chengduoensis sp. nov., external view, SEM A a broken valve B middle part detail from A, note the central area flanked by marginal short striae C, D two apical details from A, note the rostrate apices E a complete valve F middle part detail from E, note central area absent. Scale bars: 10 μm (A, E); 2 μm (B-D, F)." figureDoi="10.3897/phytokeys.228.101080.figure55" httpUri="https://binary.pensoft.net/fig/867643" pageId="0" pageNumber="1">55C, D</figureCitation>
), internally bilabiate, situated close to sternum (Fig.
<figureCitation id="9555B85447543918434FDE9E8A2B3126" captionStart="Figure 56" captionStartId="F56" captionText="Figure 56. Ulnaria chengduoensis sp. nov., internal view, SEM A-C three complete valves, note the linear-lanceolate valve outlines and variable central areas D-F details from C, note rostrate apices and absent central area. Scale bars: 10 μm (A-C); 2 μm (D, E); 1 μm (F)." figureDoi="10.3897/phytokeys.228.101080.figure56" httpUri="https://binary.pensoft.net/fig/867644" pageId="0" pageNumber="1">56D, F</figureCitation>
). Ocellulimbus composed of ca. 12 pervalvar and 9 transverse rows of porelli (Fig.
<figureCitation id="3405D1D801921DF62C8518C33B2DD35F" captionStart="Figure 56" captionStartId="F56" captionText="Figure 56. Ulnaria chengduoensis sp. nov., internal view, SEM A-C three complete valves, note the linear-lanceolate valve outlines and variable central areas D-F details from C, note rostrate apices and absent central area. Scale bars: 10 μm (A-C); 2 μm (D, E); 1 μm (F)." figureDoi="10.3897/phytokeys.228.101080.figure56" httpUri="https://binary.pensoft.net/fig/867644" pageId="0" pageNumber="1">56F</figureCitation>
).
</paragraph>
<caption id="251D4F99C1D6C2A6B7687C5F1A1A967D" doi="10.3897/phytokeys.228.101080.figure55" httpUri="https://binary.pensoft.net/fig/867643" pageId="0" pageNumber="1" start="Figure 55" startId="F55">
<paragraph id="3A3B2B6D4C99167F6C893F51CF823E74" pageId="0" pageNumber="1">
<emphasis id="5870F66EAFC2FCC8EB307B7623860457" bold="true" pageId="0" pageNumber="1">Figure 55.</emphasis>
<taxonomicName id="486FF07D8740E1803D651ADCEA0E2930" authorityName="Bing Liu" authorityYear="2023" class="Bacillariophyceae" family="Ulnariaceae" genus="Ulnaria" kingdom="Plantae" lsidName="Ulnaria chengduoensis" order="Licmophorales" pageId="0" pageNumber="1" phylum="Bacillariophyta" rank="species" species="chengduoensis">
<emphasis id="9EDEEFE350FC9C80BC1623313CDFF0F6" italics="true" pageId="0" pageNumber="1">Ulnaria chengduoensis</emphasis>
</taxonomicName>
sp. nov., external view, SEM
<emphasis id="6E1A8C1335AC4941FC27024BDE46E710" bold="true" pageId="0" pageNumber="1">A</emphasis>
a broken valve
<emphasis id="4843D9AF20431EBEB2211139072680FB" bold="true" pageId="0" pageNumber="1">B</emphasis>
middle part detail from
<emphasis id="C3295599F571A8A6AF619A467217F03C" bold="true" pageId="0" pageNumber="1">A</emphasis>
, note the central area flanked by marginal short striae
<emphasis id="EDDB9B42CA845BB4117E5553DC493825" bold="true" pageId="0" pageNumber="1">C, D</emphasis>
two apical details from
<emphasis id="1A7654FAE7613B41AA57D958280FAC66" bold="true" pageId="0" pageNumber="1">A</emphasis>
, note the rostrate apices
<emphasis id="FDF21E4A83CAF9A3775F5421D1B48118" bold="true" pageId="0" pageNumber="1">E</emphasis>
a complete valve
<emphasis id="45DB72281B12D4C04787F744A5613012" bold="true" pageId="0" pageNumber="1">F</emphasis>
middle part detail from
<emphasis id="4F6810A11C0AAE5C404A7486D5F152C8" bold="true" pageId="0" pageNumber="1">E</emphasis>
, note central area absent. Scale bars: 10
<normalizedToken id="7406AF2ADE7F8B971698210750EB1AF1" originalValue="μm">μm</normalizedToken>
(
<emphasis id="E7A26EB3F11F7901B2CB3F13EED07D2A" bold="true" pageId="0" pageNumber="1">A, E</emphasis>
); 2
<normalizedToken id="50FAC959BA3BAE1423AD12710EEB29B3" originalValue="μm">μm</normalizedToken>
(
<emphasis id="808D92691AFA93A139F9CA347D50FB37" bold="true" pageId="0" pageNumber="1">B-D, F</emphasis>
).
</paragraph>
</caption>
<caption id="FD432045D1F56B547A6E491FDD4B7C6A" doi="10.3897/phytokeys.228.101080.figure56" httpUri="https://binary.pensoft.net/fig/867644" pageId="0" pageNumber="1" start="Figure 56" startId="F56">
<paragraph id="138534885E1017406B20A96AB80C1050" pageId="0" pageNumber="1">
<emphasis id="7C3890E5F76AAE99153FF24F7B6D98B9" bold="true" pageId="0" pageNumber="1">Figure 56.</emphasis>
<taxonomicName id="567CD07D9BD9D8DF57ECEF683B16A7A5" authorityName="Bing Liu" authorityYear="2023" class="Bacillariophyceae" family="Ulnariaceae" genus="Ulnaria" kingdom="Plantae" lsidName="Ulnaria chengduoensis" order="Licmophorales" pageId="0" pageNumber="1" phylum="Bacillariophyta" rank="species" species="chengduoensis">
<emphasis id="1E32BC41D870A38C5C47EEDC58DD5271" italics="true" pageId="0" pageNumber="1">Ulnaria chengduoensis</emphasis>
</taxonomicName>
sp. nov., internal view, SEM
<emphasis id="413D566B2DC7C9F5BC7CEF3C5A2F7B3C" bold="true" pageId="0" pageNumber="1">A-C</emphasis>
three complete valves, note the linear-lanceolate valve outlines and variable central areas
<emphasis id="8DCA62CBE5A3886DC2BC0D6BCF3E91E6" bold="true" pageId="0" pageNumber="1">D-F</emphasis>
details from
<emphasis id="7F3035F8D38B9755E3CC00F6589321CD" bold="true" pageId="0" pageNumber="1">C</emphasis>
, note rostrate apices and absent central area. Scale bars: 10
<normalizedToken id="3EE88121FA31CA457FD6C2995862C6A0" originalValue="μm">μm</normalizedToken>
(
<emphasis id="BB337E662FD5451ABE790C21B097730D" bold="true" pageId="0" pageNumber="1">A-C</emphasis>
); 2
<normalizedToken id="0EF25E7FFEED8F4E927A6B66046E21DF" originalValue="μm">μm</normalizedToken>
(
<emphasis id="D67BBF2DEA1A1A7F0BEF841B22AD806C" bold="true" pageId="0" pageNumber="1">D, E</emphasis>
); 1
<normalizedToken id="9D5556CC121AF769D8A574D89CB6B296" originalValue="μm">μm</normalizedToken>
(
<emphasis id="C79D3FBEED2935730705BA435BE65A4A" bold="true" pageId="0" pageNumber="1">F</emphasis>
).
</paragraph>
</caption>
</subSubSection>
<subSubSection id="74A645A92D4D833F1DCD5179CCB63BB3" pageId="0" pageNumber="1" type="etymology">
<paragraph id="46CEDF3020E0C6F7A24FA8E1F9DFF20C" pageId="0" pageNumber="1">Etymology.</paragraph>
<paragraph id="B457D4C781855A41377508C8FCF00D28" pageId="0" pageNumber="1">Named after Chengduo County, where this species was found.</paragraph>
</subSubSection>
<subSubSection id="FCB94EB7FA757FC58774698E5EF48AA3" pageId="0" pageNumber="1" type="ecology">
<paragraph id="E7955B75B6A4EFEE6956FFBE6A3554D4" pageId="0" pageNumber="1">Ecology and distribution.</paragraph>
<paragraph id="3326CA7F97D101C6FB6A33CC0A3DFAC4" pageId="0" pageNumber="1">
Epilithic in a plateau river. The following environmental parameters were measured in the field: Conductivity was 422.7
<normalizedToken id="60A8EEB57492DD8B755ECBDBCC05977D" originalValue="±">+/-</normalizedToken>
1.3
<normalizedToken id="400431AA6896EE8CD918B9631734099C" originalValue="μS">μS</normalizedToken>
∙cm-1, pH was 8.2
<normalizedToken id="8280855DFCF70861C7C8DF0FEF304367" originalValue="±">+/-</normalizedToken>
0.1 and water temperature was 12.2
<normalizedToken id="C6B7E704742A1358A577B9B7654E8BAC" originalValue="±">+/-</normalizedToken>
0.5 °C. So far, its distribution is known only from the type locality.
</paragraph>
</subSubSection>
<subSubSection id="8314BEBD3DA9731760AC4F0B53667BE8" pageId="0" pageNumber="1" type="discussion">
<paragraph id="0CE8F2B0EA975C20BF7DF2E3D5B2DF98" pageId="0" pageNumber="1">Discussion.</paragraph>
<paragraph id="F38AE80AC1F34C77D83C6250F0B9957D" pageId="0" pageNumber="1">
<taxonomicName id="A5F9241CD7299C05E850B0091FF6EA6A" authorityName="Bing Liu" authorityYear="2023" class="Bacillariophyceae" family="Ulnariaceae" genus="Ulnaria" kingdom="Plantae" lsidName="Ulnaria chengduoensis" order="Licmophorales" pageId="0" pageNumber="1" phylum="Bacillariophyta" rank="species" species="chengduoensis">
<emphasis id="3F852362D199E8010A88C13478D5496B" italics="true" pageId="0" pageNumber="1">Ulnaria chengduoensis</emphasis>
</taxonomicName>
is characterized by its linear valve outline, variable central area, narrow rostrate valve apices. It differs from
<taxonomicName id="A5844EC9F833B688098FDA33D4A0D2B0" lsidName="U. ramerii" pageId="0" pageNumber="1" rank="species" species="ramerii">
<emphasis id="12C865B3473A8F52C76D2A829063D8C7" italics="true" pageId="0" pageNumber="1">U. ramerii</emphasis>
</taxonomicName>
and
<taxonomicName id="9A9DBBCB27FC60F98658DC2C3D20A8FA" lsidName="U. verhaegeniana" pageId="0" pageNumber="1" rank="species" species="verhaegeniana">
<emphasis id="7A54DF22F303F9AADCF18DE2669FE2E0" italics="true" pageId="0" pageNumber="1">U. verhaegeniana</emphasis>
</taxonomicName>
by its variable central area, i.e., it may completely lack a central area whereas
<taxonomicName id="1ACA98919F463DE0E4ADECB5D990FEBD" lsidName="U. ramerii" pageId="0" pageNumber="1" rank="species" species="ramerii">
<emphasis id="0A0335405EDA73611616EAE94C9EC6C3" italics="true" pageId="0" pageNumber="1">U. ramerii</emphasis>
</taxonomicName>
always possesses an ellipsoid to rectangular central area (see
<bibRefCitation id="9D18B888FB770649BC145C4318345334" author="Morales, EA" journalOrPublisher="Phytotaxa" pageId="0" pageNumber="1" refId="B40" refString="Morales, EA, Hamsher, SE, Manoylov, KM, Gillett, N, Hamilton, PB, Potapova, MM, Ponader, K, Winter, D, Spaulding, S, Hagan, EE, Lavoie, I, 2007. Synedra ulna (Nitzsch) Ehrenberg and allies from rivers in the United States. Thirteenth NAWQA Workshop on Harmonization of Algal Taxonomy. The Academy of Natural Sciences, Philadelphia, 1-162." title="Synedra ulna (Nitzsch) Ehrenberg and allies from rivers in the United States. Thirteenth NAWQA Workshop on Harmonization of Algal Taxonomy. The Academy of Natural Sciences, Philadelphia, 1 - 162." year="2007">Morales et al. 2007</bibRefCitation>
, p. 73, figs 87-94, as
<taxonomicName id="255BAD4085DFF050BCF96F973209AAA1" class="Bacillariophyceae" family="Fragilariaceae" genus="Synedra" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="Synedra ulna subsp. var. var. ramesi" order="Monoraphidinales" pageId="0" pageNumber="1" phylum="Bacillariophyta" rank="variety" species="ulna" subSpecies="var." variety="ramesi">Synedra ulna var. ramesi</taxonomicName>
) and
<taxonomicName id="16CDDF75D874B04DC212670CB74316D7" lsidName="U. verhaegeniana" pageId="0" pageNumber="1" rank="species" species="verhaegeniana">
<emphasis id="1F90DFF4E3F6C20A0D54CE1594F656D7" italics="true" pageId="0" pageNumber="1">U. verhaegeniana</emphasis>
</taxonomicName>
always has a large, apically elongated, rectangular central area (see
<bibRefCitation id="19D531465712E9BFC4EAA608DEB999F1" DOI="https://doi.org/10.11646/phytotaxa.326.3.6" author="Van de Vijver, B" journalOrPublisher="Phytotaxa" pageId="0" pageNumber="1" pagination="221 - 226" refId="B56" refString="Van de Vijver, B, De Haan, M, Mertens, A, Cocquyt, C, 2017. Ulnaria verhaegeniana, a new diatom (Bacillariophyta) species from Belgium. Phytotaxa 326 (3): 221 - 226, DOI: https://doi.org/10.11646/phytotaxa.326.3.6" title="Ulnaria verhaegeniana, a new diatom (Bacillariophyta) species from Belgium." url="https://doi.org/10.11646/phytotaxa.326.3.6" volume="326" year="2017">Van de Vijver et al. 2017</bibRefCitation>
, p. 223, figs 1-13).
</paragraph>
</subSubSection>
</treatment>
</document>