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<document id="3E22715CE24605A0AAB71B133075A6FD" ID-DOI="10.5252/cryptogamie-algologie2024v45a1" ID-ISSN="1776-0984" ID-Zenodo-Dep="10526738" IM.bibliography_approvedBy="valdenar" IM.illustrations_approvedBy="valdenar" IM.materialsCitations_approvedBy="valdenar" IM.metadata_approvedBy="felipe" IM.tables_approvedBy="valdenar" IM.taxonomicNames_approvedBy="felipe" IM.treatments_approvedBy="valdenar" checkinTime="1705566288402" checkinUser="plazi" docAuthor="Schneider, Craig W. &amp; Saunders, Gary W." docDate="2024" docId="03D09363F8769654FEDDF8BFE4E9FA5F" docLanguage="en" docName="algologie.2024.45.1.pdf" docOrigin="Cryptogamie, Algologie 20 (1)" docSource="https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/algologie2024v45a1.pdf" docStyle="DocumentStyle:C31C23F805CBAD2BB1C6021F66949308.6:CryptogamieAlgologie.2019-.journal_article" docStyleId="C31C23F805CBAD2BB1C6021F66949308" docStyleName="CryptogamieAlgologie.2019-.journal_article" docStyleVersion="6" docTitle="Pleonosporium ricksearlesii C. W. Schneider &amp; G. W. Saunders 2024, sp. nov." docType="treatment" docVersion="4" lastPageNumber="4" masterDocId="FFE9EB1BF8739651FFEEFF81E15BFFD2" masterDocTitle="Australasian Lophothamnion J. Agardh aligns genetically with Pleonosporium Nägeli (Wrangeliaceae, Spongoclonieae): new species from the western Atlantic" masterLastPageNumber="10" masterPageNumber="1" pageNumber="4" updateTime="1706026377379" updateUser="ExternalLinkService" zenodo-license-document="CC0-1.0" zenodo-license-figures="CC0-1.0" zenodo-license-treatments="UNSPECIFIED">
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<mods:title id="5C24EF704E8BB33C34D7CBCE365C865D">Australasian Lophothamnion J. Agardh aligns genetically with Pleonosporium Nägeli (Wrangeliaceae, Spongoclonieae): new species from the western Atlantic</mods:title>
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<mods:name id="EE4A9613B5078E4071AE66D796CB0E2A" type="personal">
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<mods:namePart id="E96B870586F05922214A0EDC09FB4CCD">Schneider, Craig W.</mods:namePart>
<mods:affiliation id="38DC2535F8FFFC43248B66F1C659FBAF">Department of Biology, Trinity College, Hartford, Connecticut, 06106 (United States) cschneid @ trincoll. edu (corresponding author)</mods:affiliation>
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<mods:namePart id="B254CDED0704EB1794368AAA406A4293">Saunders, Gary W.</mods:namePart>
<mods:affiliation id="D2D2FFE6DB7FC9C23C6852E7D7F57C32">Centre for Environmental &amp; Molecular Algal Research, Department of Biology, University of New Brunswick, Fredericton, NB E 3 B 5 A 3 (Canada)</mods:affiliation>
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<mods:title id="F5FB40CAFD75A0445F54DEE3B6999463">Cryptogamie, Algologie</mods:title>
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<mods:part id="78FF2417DB2D47ADF0A6866D1CAB4C8B">
<mods:date id="84FFCCE116F9B730D205B8A692D0B175">2024</mods:date>
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<mods:number id="35AB8A97E1163113B23988D39AF66BA9">2024-01-17</mods:number>
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<mods:number id="2E38D3658EA880E100CBAF45A8083FA9">20</mods:number>
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<mods:url id="B9AB3C93F2940134F86189BB9F094C2E">https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/algologie2024v45a1.pdf</mods:url>
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<mods:identifier id="2CF4B228359586AE2628FABF86AB3296" type="DOI">10.5252/cryptogamie-algologie2024v45a1</mods:identifier>
<mods:identifier id="42E4035B47FC74CCFBBF07789CFD9BFD" type="ISSN">1776-0984</mods:identifier>
<mods:identifier id="CE66F3B036FBB1028C9D36D4D2B771B4" type="Zenodo-Dep">10526738</mods:identifier>
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<treatment id="03D09363F8769654FEDDF8BFE4E9FA5F" ID-DOI="http://doi.org/10.5281/zenodo.10557093" ID-Zenodo-Dep="10557093" LSID="urn:lsid:plazi:treatment:03D09363F8769654FEDDF8BFE4E9FA5F" httpUri="http://treatment.plazi.org/id/03D09363F8769654FEDDF8BFE4E9FA5F" lastPageNumber="4" pageId="5" pageNumber="4">
<subSubSection id="C36371FEF8769654FEDDF8BFE3F6F8AA" pageId="5" pageNumber="4" type="nomenclature">
<paragraph id="8BC62275F8769654FEDDF8BFE3F6F8AA" blockId="5.[222,685,1854,1944]" pageId="5" pageNumber="4">
<heading id="D08E9519F8769654FEDDF8BFE3F6F8AA" centered="true" fontSize="11" level="2" pageId="5" pageNumber="4" reason="4">
<taxonomicName id="4C7959F6F8769654FEDDF8BFE316F8AA" authority="C.W.Schneider &amp; G.W.Saunders" authorityName="C. W. Schneider &amp; G. W. Saunders" authorityYear="2024" class="Florideophyceae" family="Wrangeliaceae" genus="Pleonosporium" kingdom="Plantae" order="Ceramiales" pageId="5" pageNumber="4" phylum="Rhodophyta" rank="species" species="ricksearlesii" status="sp. nov.">
<emphasis id="B90DFE67F8769654FEDDF8BFE302F88B" bold="true" box="[307,601,1854,1881]" italics="true" pageId="5" pageNumber="4">Pleonosporium ricksearlesii</emphasis>
C.W.Schneider &amp; G.W.Saunders
</taxonomicName>
,
<taxonomicNameLabel id="A23E431CF8769654FDB6F8DFE3F6F8AA" box="[600,685,1886,1912]" pageId="5" pageNumber="4" rank="species">sp. nov.</taxonomicNameLabel>
</heading>
</paragraph>
</subSubSection>
<subSubSection id="C36371FEF8769654FE73F8FFE0B5F84A" box="[413,494,1918,1944]" pageId="5" pageNumber="4" type="description">
<paragraph id="8BC62275F8769654FE73F8FFE0B5F84A" blockId="5.[222,685,1854,1944]" box="[413,494,1918,1944]" pageId="5" pageNumber="4">
<heading id="D08E9519F8769654FE73F8FFE0B5F84A" box="[413,494,1918,1944]" centered="true" fontSize="11" level="3" pageId="5" pageNumber="4" reason="3">
(
<figureCitation id="13423EF0F8769654FE48F8FFE0BEF84A" box="[422,485,1918,1944]" captionStart="FIG" captionStartId="8.[132,143,1939,1957]" captionTargetBox="[132,1454,215,1894]" captionTargetId="figure-27@8.[699,1268,773,1335]" captionTargetPageId="8" captionText="FIG. 3. — Pleonosporium ricksearlesii C.W.Schneider &amp; G.W.Saunders, sp. nov., holotype specimen (CWS/TRP 15-21-3, BDA1944): A, habit of type specimen; B, apex of indeterminate axis; C, lateral branch origin from basal portion of axis; D, apex of lateral branch; E, apical portion of axis with adaxial tetrasporangia; F, terminal tetrasporangium on lateral off lower main axis with subtending branchlet or sporangial initials; G, regenerating lateral on lower axis producing a series of tetrasporangia. Scale bars: A, 2 cm; B, D, E, 100 µm; C, F, G, 50 µm." figureDoi="http://doi.org/10.5281/zenodo.10526746" httpUri="https://zenodo.org/record/10526746/files/figure.png" pageId="5" pageNumber="4">Fig. 3</figureCitation>
)
</heading>
</paragraph>
</subSubSection>
<subSubSection id="C36371FEF8769654FF6AF838E4EBFE86" pageId="5" pageNumber="4" type="materials_examined">
<paragraph id="8BC62275F8769654FF6AF838E591FEF6" blockId="5.[132,775,1976,2027]" lastBlockId="5.[811,1456,215,292]" pageId="5" pageNumber="4">
<materialsCitation id="3B112828F8769654FF6AF838E591FEF6" collectedFrom="on wooden dock in Ely's Harbour" collectingDate="2015-06-30" collectionCode="DESIGNATED, HERE" collectorName="C. W. Schneider &amp; T. R. Popolizio" country="Bermuda" elevation="5" latitude="32.279716" location="Somerset Island" longLatPrecision="1" longitude="-64.8798" municipality="Ely's Harbour" pageId="5" pageNumber="4" specimenCode="MICH[1210917]" specimenCount="2" typeStatus="holotype">
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<typeStatus id="54C29CD7F8769654FF6AF838E1AAF81D" box="[132,241,1977,2000]" pageId="5" pageNumber="4" type="holotype">HOLOTYPE</typeStatus>
</smallCapsWord>
(
<smallCapsWord id="8D20B4A9F8769654FEECF83FE025F81D" baselines="1995" box="[258,382,1982,1999]" lowerCaseFontSize="7" mainFontSize="10" normCase="lower" normString="designated" pageId="5" pageNumber="4">DESIGNATED</smallCapsWord>
<smallCapsWord id="8D20B4A9F8769654FE68F83FE0E2F81C" baselines="1994" box="[390,441,1982,1998]" lowerCaseFontSize="7" mainFontSize="10" normCase="lower" normString="here" pageId="5" pageNumber="4">HERE</smallCapsWord>
). —
<emphasis id="B90DFE67F8769654FE1BF839E30AF802" bold="true" box="[501,593,1976,2000]" pageId="5" pageNumber="4">
<collectingCountry id="F36E62E5F8769654FE1BF839E30AF802" box="[501,593,1976,2000]" name="Bermuda" pageId="5" pageNumber="4">Bermuda</collectingCountry>
</emphasis>
.
<location id="8EA674AEF8769654FD8EF839E258F802" LSID="urn:lsid:plazi:treatment:03D09363F8769654FEDDF8BFE4E9FA5F:8EA674AEF8769654FD8EF839E258F802" box="[608,771,1976,2000]" country="Bermuda" latitude="32.279716" longLatPrecision="1" longitude="-64.8798" municipality="Ely's Harbour" name="Somerset Island" pageId="5" pageNumber="4">Somerset Island</location>
,
<geoCoordinate id="EE4D44B2F8769654FF68F852E050F839" box="[134,267,2003,2027]" degrees="32" direction="north" minutes="16.783" orientation="latitude" pageId="5" pageNumber="4" precision="1" value="32.279716">32°16.783’N</geoCoordinate>
,
<geoCoordinate id="EE4D44B2F8769654FEF6F852E0C1F839" box="[280,410,2003,2027]" degrees="64" direction="west" minutes="52.788" orientation="longitude" pageId="5" pageNumber="4" precision="1" value="-64.8798">64°52.788’W</geoCoordinate>
,
<collectedFrom id="38656188F8769654FE47F852E258F839" box="[425,771,2003,2027]" pageId="5" pageNumber="4">on wooden dock in Ely’s Harbour</collectedFrom>
, depth
<quantity id="4C818F90F8769654FC82FF56E2F3FF3C" box="[876,936,215,239]" metricMagnitude="-1" metricUnit="m" metricValue="5.0" metricValueMax="10.0" metricValueMin="0.0" pageId="5" pageNumber="4" unit="m" value="0.5" valueMax="1.0" valueMin="0.0">
<elevation id="0054C546F8769654FC82FF56E2F3FF3C" box="[876,936,215,239]" metricMagnitude="-1" metricUnit="m" metricValue="5.0" metricValueMax="10.0" metricValueMin="0.0" pageId="5" pageNumber="4" unit="m" value="0.5" valueMax="1.0" valueMin="0.0">0-1 m</elevation>
</quantity>
,
<date id="FFC704B5F8769654FC5FFF56E57DFF3D" box="[945,1062,215,239]" pageId="5" pageNumber="4" value="2015-06-30">
<collectingDate id="EF83FD5DF8769654FC5FFF56E57DFF3D" box="[945,1062,215,239]" pageId="5" pageNumber="4" value="2015-06-30">30.VI.2015</collectingDate>
</date>
,
<collectorName id="268C47A3F8769654FBC5FF56E5E1FF3D" box="[1067,1210,215,239]" pageId="5" pageNumber="4">
<emphasis id="B90DFE67F8769654FBC5FF56E503FF3C" box="[1067,1112,215,238]" italics="true" pageId="5" pageNumber="4">C.W</emphasis>
<emphasis id="B90DFE67F8769654FBB6FF56E45BFF3D" box="[1112,1280,215,239]" italics="true" pageId="5" pageNumber="4">
. Schneider &amp;
<collectorName id="268C47A3F8769654FB39FF59E401FF3D" box="[1239,1370,215,239]" pageId="5" pageNumber="4">
T.R.
<emphasis id="B90DFE67F8769654FAEAFF56E4F5FF3D" box="[1284,1454,215,239]" italics="true" pageId="5" pageNumber="4">Popolizio 15-21-3</emphasis>
</collectorName>
</emphasis>
</collectorName>
(holo-,
<specimenCode id="DBDF8A0EF8769654FC9FFF70E544FEDB" box="[881,1055,241,265]" pageId="5" pageNumber="4">MICH[1210917]</specimenCode>
), dried silica sample: BDA1944, GenBank:
<accessionNumber id="942ABF96F8769654FCC5FE8DE2C0FEF6" box="[811,923,268,292]" pageId="5" pageNumber="4">OR336107</accessionNumber>
(COI-5P),
<accessionNumber id="942ABF96F8769654FBFFFE8DE5D9FEF6" box="[1041,1154,268,292]" pageId="5" pageNumber="4">OR336112</accessionNumber>
(
<emphasis id="B90DFE67F8769654FB7EFE8DE5F6FEF6" box="[1168,1197,268,292]" italics="true" pageId="5" pageNumber="4">rbc</emphasis>
L).
</materialsCitation>
</paragraph>
<paragraph id="8BC62275F8769654FCC3FEBDE4EBFE86" blockId="5.[813,1456,315,340]" box="[813,1456,315,340]" pageId="5" pageNumber="4">
<materialsCitation id="3B112828F8769654FCC3FEBDE4F7FE86" box="[813,1452,315,340]" collectionCode="NY, UNB, CWS" pageId="5" pageNumber="4" specimenCount="1" typeStatus="isotype">
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<typeStatus id="54C29CD7F8769654FCC3FEBDE2DFFE80" box="[813,900,316,339]" pageId="5" pageNumber="4" type="isotype">ISOTYPES</typeStatus>
</smallCapsWord>
. — Same data as holotype (iso-,
<collectionCode id="ED68BAB0F8769654FB51FEBDE5B9FE81" box="[1215,1250,316,339]" country="USA" lsid="urn:lsid:biocol.org:col:15556" name="William and Lynda Steere Herbarium of the New York Botanical Garden" pageId="5" pageNumber="4" type="Herbarium">NY</collectionCode>
,
<collectionCode id="ED68BAB0F8769654FB05FEBDE47FFE81" box="[1259,1316,316,339]" country="Canada" httpUri="http://biocol.org/urn:lsid:biocol.org:col:15300" lsid="urn:lsid:biocol.org:col:15300" name="Connell Memorial Herbarium, UNB Fredericton" pageId="5" pageNumber="4" type="Herbarium">UNB</collectionCode>
, Herb.
<collectionCode id="ED68BAB0F8769654FA84FEBDE4FFFE86" box="[1386,1444,316,340]" pageId="5" pageNumber="4">CWS</collectionCode>
)
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection id="C36371FEF8769654FCC3FEEDE537FDD5" pageId="5" pageNumber="4" type="etymology">
<paragraph id="8BC62275F8769654FCC3FEEDE537FDD5" blockId="5.[811,1455,363,519]" pageId="5" pageNumber="4">
<smallCapsWord id="8D20B4A9F8769654FCC3FEEDE2F3FE50" baselines="381,382" box="[813,936,364,387]" lowerCaseFontSize="7" mainFontSize="10" normCase="title" normString="Etymology" pageId="5" pageNumber="4">ETYMOLOGY</smallCapsWord>
. — Named for Prof. Richard Brownlee Searles, the first author’s graduate mentor, collaborator and friend, on the occasion of his 87th birthday. Joint cruises with the first author to study mesophotic seaweeds off
<collectingCountry id="F36E62E5F8769654FBCEFE3BE521FE00" box="[1056,1146,442,466]" name="Bermuda" pageId="5" pageNumber="4">Bermuda</collectingCountry>
aboard the R/V
<emphasis id="B90DFE67F8769654FAF3FE3BE42BFE00" box="[1309,1392,442,466]" italics="true" pageId="5" pageNumber="4">Seahawk</emphasis>
in the early 1980s initiated four decades of investigation on the macroalgal flora of this Atlantic archipelago.
</paragraph>
</subSubSection>
<subSubSection id="C36371FEF8769654FCC3FD9EE4DAFDE5" box="[813,1409,543,567]" pageId="5" pageNumber="4" type="distribution">
<paragraph id="8BC62275F8769654FCC3FD9EE4DAFDE5" blockId="5.[813,1409,543,567]" box="[813,1409,543,567]" pageId="5" pageNumber="4">
<smallCapsWord id="8D20B4A9F8769654FCC3FD9EE2E1FDE7" baselines="560,561" box="[813,954,543,566]" lowerCaseFontSize="7" mainFontSize="10" normCase="title" normString="Distribution" pageId="5" pageNumber="4">DISTRIBUTION</smallCapsWord>
. — Endemic to
<collectingCountry id="F36E62E5F8769654FBB0FD9EE5E3FDE5" box="[1118,1208,543,567]" name="Bermuda" pageId="5" pageNumber="4">Bermuda</collectingCountry>
as currently known.
</paragraph>
</subSubSection>
<subSubSection id="C36371FEF8769654FCC3FDD7E4E9FA5F" pageId="5" pageNumber="4" type="description">
<paragraph id="8BC62275F8769654FCC3FDD7E2E6FDBC" blockId="5.[810,1458,598,1422]" box="[813,957,598,624]" pageId="5" pageNumber="4">
<heading id="D08E9519F8769654FCC3FDD7E2E6FDBC" box="[813,957,598,624]" fontSize="9" level="3" pageId="5" pageNumber="4" reason="5">
<smallCapsWord id="8D20B4A9F8769654FCC3FDD7E2E6FDBC" baselines="617,617" box="[813,957,598,624]" lowerCaseFontSize="8" mainFontSize="11" normCase="title" normString="Description" pageId="5" pageNumber="4">DESCRIPTION</smallCapsWord>
</heading>
</paragraph>
<paragraph id="8BC62275F8769654FCC3FDF7E4E9FA5F" blockId="5.[810,1458,598,1422]" pageId="5" pageNumber="4">
Delicate plants lignicolous or on mud-saturated wood, bushy, erect to 5.0 cm tall, Persian red in colour (Graf
<date id="FFC704B5F8769654FACAFD17E423FD62" box="[1316,1400,662,688]" pageId="5" pageNumber="4" value="2023-10-01">1x 2023</date>
) and ecorticate (
<figureCitation id="13423EF0F8769654FC4AFD34E2ADFD02" box="[932,1014,693,720]" captionStart="FIG" captionStartId="8.[132,143,1939,1957]" captionTargetBox="[132,1454,215,1894]" captionTargetId="figure-27@8.[699,1268,773,1335]" captionTargetPageId="8" captionText="FIG. 3. — Pleonosporium ricksearlesii C.W.Schneider &amp; G.W.Saunders, sp. nov., holotype specimen (CWS/TRP 15-21-3, BDA1944): A, habit of type specimen; B, apex of indeterminate axis; C, lateral branch origin from basal portion of axis; D, apex of lateral branch; E, apical portion of axis with adaxial tetrasporangia; F, terminal tetrasporangium on lateral off lower main axis with subtending branchlet or sporangial initials; G, regenerating lateral on lower axis producing a series of tetrasporangia. Scale bars: A, 2 cm; B, D, E, 100 µm; C, F, G, 50 µm." figureDoi="http://doi.org/10.5281/zenodo.10526746" httpUri="https://zenodo.org/record/10526746/files/figure.png" pageId="5" pageNumber="4">Fig. 3A</figureCitation>
); indeterminate axes fine with alternately irregular branching above with corymbose and narrowly-angled branches at apices, some with some branches overtopping the apex (
<figureCitation id="13423EF0F8769654FC85FC94E2E1FCFD" box="[875,954,789,815]" captionStart="FIG" captionStartId="8.[132,143,1939,1957]" captionTargetBox="[132,1454,215,1894]" captionTargetId="figure-27@8.[699,1268,773,1335]" captionTargetPageId="8" captionText="FIG. 3. — Pleonosporium ricksearlesii C.W.Schneider &amp; G.W.Saunders, sp. nov., holotype specimen (CWS/TRP 15-21-3, BDA1944): A, habit of type specimen; B, apex of indeterminate axis; C, lateral branch origin from basal portion of axis; D, apex of lateral branch; E, apical portion of axis with adaxial tetrasporangia; F, terminal tetrasporangium on lateral off lower main axis with subtending branchlet or sporangial initials; G, regenerating lateral on lower axis producing a series of tetrasporangia. Scale bars: A, 2 cm; B, D, E, 100 µm; C, F, G, 50 µm." figureDoi="http://doi.org/10.5281/zenodo.10526746" httpUri="https://zenodo.org/record/10526746/files/figure.png" pageId="5" pageNumber="4">Fig. 3B</figureCitation>
); most branches simple of 15 with fewer cells or once branched, indeterminate branches irregularly replacing these branches; in lower portions of indeterminate axes, the lateral branches markedly smaller than the axis that produced them (
<figureCitation id="13423EF0F8769654FC9AFC14E29EFC7D" box="[884,965,917,943]" captionStart="FIG" captionStartId="8.[132,143,1939,1957]" captionTargetBox="[132,1454,215,1894]" captionTargetId="figure-27@8.[699,1268,773,1335]" captionTargetPageId="8" captionText="FIG. 3. — Pleonosporium ricksearlesii C.W.Schneider &amp; G.W.Saunders, sp. nov., holotype specimen (CWS/TRP 15-21-3, BDA1944): A, habit of type specimen; B, apex of indeterminate axis; C, lateral branch origin from basal portion of axis; D, apex of lateral branch; E, apical portion of axis with adaxial tetrasporangia; F, terminal tetrasporangium on lateral off lower main axis with subtending branchlet or sporangial initials; G, regenerating lateral on lower axis producing a series of tetrasporangia. Scale bars: A, 2 cm; B, D, E, 100 µm; C, F, G, 50 µm." figureDoi="http://doi.org/10.5281/zenodo.10526746" httpUri="https://zenodo.org/record/10526746/files/figure.png" pageId="5" pageNumber="4">Fig. 3C</figureCitation>
), and with most lateral branches losing all but a few of their most proximal cells; in distal portions the axes only slightly larger in diam. than the branches they produce; indeterminate axial cells cylindrical and usually flared at their proximal ends in basal portions of main axes (
<figureCitation id="13423EF0F8769654FAFBFB95E4FAFBFC" box="[1301,1441,1044,1071]" captionStart="FIG" captionStartId="8.[132,143,1939,1957]" captionTargetBox="[132,1454,215,1894]" captionTargetId="figure-27@8.[699,1268,773,1335]" captionTargetPageId="8" captionText="FIG. 3. — Pleonosporium ricksearlesii C.W.Schneider &amp; G.W.Saunders, sp. nov., holotype specimen (CWS/TRP 15-21-3, BDA1944): A, habit of type specimen; B, apex of indeterminate axis; C, lateral branch origin from basal portion of axis; D, apex of lateral branch; E, apical portion of axis with adaxial tetrasporangia; F, terminal tetrasporangium on lateral off lower main axis with subtending branchlet or sporangial initials; G, regenerating lateral on lower axis producing a series of tetrasporangia. Scale bars: A, 2 cm; B, D, E, 100 µm; C, F, G, 50 µm." figureDoi="http://doi.org/10.5281/zenodo.10526746" httpUri="https://zenodo.org/record/10526746/files/figure.png" pageId="5" pageNumber="4">Fig. 3C, F, G</figureCitation>
), 95-150 µm diam. and 370-530 µm long, gradually tapering distally to cells 20-30 µm diam. and 85-250 µm long several segments below the apices; upper branches incurved, apical cells slightly tapering but obtuse (
<figureCitation id="13423EF0F8769654FB48FB15E5A5FB7C" box="[1190,1278,1172,1198]" captionStart="FIG" captionStartId="8.[132,143,1939,1957]" captionTargetBox="[132,1454,215,1894]" captionTargetId="figure-27@8.[699,1268,773,1335]" captionTargetPageId="8" captionText="FIG. 3. — Pleonosporium ricksearlesii C.W.Schneider &amp; G.W.Saunders, sp. nov., holotype specimen (CWS/TRP 15-21-3, BDA1944): A, habit of type specimen; B, apex of indeterminate axis; C, lateral branch origin from basal portion of axis; D, apex of lateral branch; E, apical portion of axis with adaxial tetrasporangia; F, terminal tetrasporangium on lateral off lower main axis with subtending branchlet or sporangial initials; G, regenerating lateral on lower axis producing a series of tetrasporangia. Scale bars: A, 2 cm; B, D, E, 100 µm; C, F, G, 50 µm." figureDoi="http://doi.org/10.5281/zenodo.10526746" httpUri="https://zenodo.org/record/10526746/files/figure.png" pageId="5" pageNumber="4">Fig. 3D</figureCitation>
); tetrasporangia adaxially sessile on upper incurved branches, borne singly or in a series of successive cells or every other branch cell (
<figureCitation id="13423EF0F8769654FABDFB55E4F9FB3C" box="[1363,1442,1236,1262]" captionStart="FIG" captionStartId="8.[132,143,1939,1957]" captionTargetBox="[132,1454,215,1894]" captionTargetId="figure-27@8.[699,1268,773,1335]" captionTargetPageId="8" captionText="FIG. 3. — Pleonosporium ricksearlesii C.W.Schneider &amp; G.W.Saunders, sp. nov., holotype specimen (CWS/TRP 15-21-3, BDA1944): A, habit of type specimen; B, apex of indeterminate axis; C, lateral branch origin from basal portion of axis; D, apex of lateral branch; E, apical portion of axis with adaxial tetrasporangia; F, terminal tetrasporangium on lateral off lower main axis with subtending branchlet or sporangial initials; G, regenerating lateral on lower axis producing a series of tetrasporangia. Scale bars: A, 2 cm; B, D, E, 100 µm; C, F, G, 50 µm." figureDoi="http://doi.org/10.5281/zenodo.10526746" httpUri="https://zenodo.org/record/10526746/files/figure.png" pageId="5" pageNumber="4">Fig. 3E</figureCitation>
), subglobose to obovoidal, 33-36 µm diam. and 36-48 µm long, including a thick wall, sporangia also forming laterally or terminally, at times clustered or in secund series, on broken lower and regenerating lateral branches (
<figureCitation id="13423EF0F8769654FB00FAD2E43BFABF" box="[1262,1376,1363,1390]" captionStart="FIG" captionStartId="8.[132,143,1939,1957]" captionTargetBox="[132,1454,215,1894]" captionTargetId="figure-27@8.[699,1268,773,1335]" captionTargetPageId="8" captionText="FIG. 3. — Pleonosporium ricksearlesii C.W.Schneider &amp; G.W.Saunders, sp. nov., holotype specimen (CWS/TRP 15-21-3, BDA1944): A, habit of type specimen; B, apex of indeterminate axis; C, lateral branch origin from basal portion of axis; D, apex of lateral branch; E, apical portion of axis with adaxial tetrasporangia; F, terminal tetrasporangium on lateral off lower main axis with subtending branchlet or sporangial initials; G, regenerating lateral on lower axis producing a series of tetrasporangia. Scale bars: A, 2 cm; B, D, E, 100 µm; C, F, G, 50 µm." figureDoi="http://doi.org/10.5281/zenodo.10526746" httpUri="https://zenodo.org/record/10526746/files/figure.png" pageId="5" pageNumber="4">Fig. 3F, G</figureCitation>
), some appearing to have single-celled stalks; gametangia unknown.
</paragraph>
</subSubSection>
</treatment>
</document>
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