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<document id="55A1AD4E8F85A6210E9C337A77865888" ID-CLB-Dataset="20323" ID-DOI="10.11646/phytotaxa.536.3.3" ID-GBIF-Dataset="bf5e3003-038b-48b4-a214-1fc1a73cd921" ID-ISSN="1179-3163" ID-Zenodo-Dep="6331876" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" checkinTime="1646592230445" checkinUser="plazi" docAuthor="Santos, Maria Aparecida Dos, Ramos, Geraldo José Peixoto &amp; Moura, Carlos Wallace Do Nascimento" docDate="2022" docId="5921D53AFFF2AC0847A8FC69FCCEF84B" docLanguage="en" docName="phytotaxa.536.3.3.pdf" docOrigin="Phytotaxa 536 (3)" docStyle="DocumentStyle:96748F8F1B6C902996E134952A3A36B9.7:Phytotaxa.2014-.journal_article" docStyleId="96748F8F1B6C902996E134952A3A36B9" docStyleName="Phytotaxa.2014-.journal_article" docStyleVersion="7" docTitle="Xanthidium mamillosum var. mediolaeve Coute &amp; Tell 1981" docType="treatment" docVersion="7" lastPageNumber="236" masterDocId="A518AD42FFFAAC004720FF23FFD5FFD6" masterDocTitle="Taxonomic notes on genera Bourrellyodesmus and Xanthidium (Zygnematophyceae) from Chapada Diamantina, Bahia, Brazil" masterLastPageNumber="242" masterPageNumber="228" pageNumber="236" updateTime="1699316742410" updateUser="ExternalLinkService" zenodo-license-figures="UNSPECIFIED" zenodo-license-treatments="UNSPECIFIED">
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<mods:title id="839F2BA2331C86DE7629300FAD2EF2DF">Taxonomic notes on genera Bourrellyodesmus and Xanthidium (Zygnematophyceae) from Chapada Diamantina, Bahia, Brazil</mods:title>
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<mods:namePart id="672BA0D14A2A3E2FE064703B7F4D2CB6">Santos, Maria Aparecida Dos</mods:namePart>
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<mods:affiliation id="D151B53531C92627946EC3DDC1305602">Programa de Pós-Graduação em Botânica, Universidade Estadual de Feira de Santana, Departamento de Ciências Biológicas, Laboratório de Ficologia, Av. Universitária, km 3, BR- 116, 44031 - 460, Feira de Santana, BA, Brazil &amp; maria. asbio @ hotmail. com; https: // orcid. org / 0000 - 0001 - 9354 - 7192</mods:affiliation>
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<mods:namePart id="12AC88DA8E30F381EFC5227373FAD15E">Ramos, Geraldo José Peixoto</mods:namePart>
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<mods:affiliation id="65FCDD2DDC98A2500B23890852964113">Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Rodovia Jorge Amado, km 16, 45662 - 900, Ilhéus, BA, Brazil &amp; gjpramos @ uesc. br; https: // orcid. org / 0000 - 0003 - 2089 - 0461</mods:affiliation>
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<mods:namePart id="B546C10DD4272C576332561261A3E86C">Moura, Carlos Wallace Do Nascimento</mods:namePart>
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<mods:affiliation id="81C99FF0E082B36B8C65CD61E64807D8">Programa de Pós-Graduação em Botânica, Universidade Estadual de Feira de Santana, Departamento de Ciências Biológicas, Laboratório de Ficologia, Av. Universitária, km 3, BR- 116, 44031 - 460, Feira de Santana, BA, Brazil &amp; wallace @ uefs. br; https: // orcid. org / 0000 - 0001 - 6904 - 6603</mods:affiliation>
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<mods:title id="A7706BDDF0A995632335E3F08B6799E2">Phytotaxa</mods:title>
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<mods:date id="5AF4DAC1D9CE92994E6CAF3A833574D3">2022</mods:date>
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<mods:number id="CB84972465E0F5146291EA91000683CC">536</mods:number>
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<treatment id="5921D53AFFF2AC0847A8FC69FCCEF84B" ID-DOI="http://doi.org/10.5281/zenodo.6343769" ID-GBIF-Taxon="193892646" ID-Zenodo-Dep="6343769" LSID="urn:lsid:plazi:treatment:5921D53AFFF2AC0847A8FC69FCCEF84B" httpUri="http://treatment.plazi.org/id/5921D53AFFF2AC0847A8FC69FCCEF84B" lastPageNumber="236" pageId="8" pageNumber="236">
<subSubSection id="999237A7FFF2AC0847A8FC69FB6FFCB3" box="[136,1210,842,869]" pageId="8" pageNumber="236" type="nomenclature">
<paragraph id="D137642CFFF2AC0847A8FC69FB6FFCB3" blockId="8.[136,1210,842,869]" box="[136,1210,842,869]" pageId="8" pageNumber="236">
<heading id="8A7FD340FFF2AC0847A8FC69FB6FFCB3" box="[136,1210,842,869]" fontSize="11" level="2" pageId="8" pageNumber="236" reason="3">
<treatmentCitationGroup id="F1984302FFF2AC0847A8FC69FB6FFCB3" box="[136,1210,842,869]" pageId="8" pageNumber="236">
<treatmentCitation id="5029423DFFF2AC0847A8FC69FBD2FCB2" author="Coute, A. &amp; Tell, G." box="[136,1031,842,869]" page=")" pageId="8" pageNumber="236" year="1981">
<taxonomicName id="16881FAFFFF2AC0847A8FC69FBD2FCB2" authority="(Gronblad) Coute &amp; Tell (1981: 197)" authorityName="Coute &amp; Tell" authorityPageNumber="197" authorityYear="1981" baseAuthorityName="Gronblad" box="[136,1031,842,869]" class="Conjugatophyceae" family="Desmidiaceae" genus="Xanthidium" kingdom="Plantae" order="Zygnematales" pageId="8" pageNumber="236" phylum="Charophyta" rank="variety" species="mamillosum" variety="mediolaeve">
<emphasis id="E3FCB83EFFF2AC0847A8FC69FE7CFCB3" bold="true" box="[136,425,842,869]" italics="true" pageId="8" pageNumber="236">Xanthidium mamillosum</emphasis>
var.
<emphasis id="E3FCB83EFFF2AC0846C0FC69FDB4FCB3" bold="true" box="[480,609,842,869]" italics="true" pageId="8" pageNumber="236">mediolaeve</emphasis>
(Grönblad)
<bibRefCitation id="B51919DDFFF2AC0845CBFC69FBD2FCB2" author="Coute, A. &amp; Tell, G." box="[747,1031,842,868]" pageId="8" pageNumber="236" pagination="1 - 228" refId="ref7655" refString="Coute, A. &amp; Tell, G. (1981) Ultrastructure de la paroi cellulaire des desmidiacees au microscope electronique a balaiage. Beih. Nova Hedwigia 68: 1 - 228." type="journal article" year="1981">Couté &amp; Tell (1981: 197)</bibRefCitation>
</taxonomicName>
</treatmentCitation>
(
<figureCitation id="49B378A9FFF2AC084336FC69FB8BFCB2" box="[1046,1118,842,868]" captionStart="FIGURES 16" captionStartId="2.[136,243,1989,2011]" captionTargetBox="[177,1405,211,1939]" captionTargetId="figure-19@2.[151,1436,190,1965]" captionTargetPageId="2" captionText="FIGURES 16. Line drawings. 1. Bourrelyodesmus comperei sp. nov. 2. Xanthidium concinnum var. longispinum var. nov. 3. Xanthidium mamillosum var. mediolaeve. 4. Xanthidium nordstedtii. 5. Xanthidium regulare var. asteptum. 6. Xanthidium trilobum." figureDoi="http://doi.org/10.5281/zenodo.6331878" httpUri="https://zenodo.org/record/6331878/files/figure.png" pageId="8" pageNumber="236">Figs 3</figureCitation>
,
<figureCitation id="49B378A9FFF2AC08434BFC69FB66FCB3" box="[1131,1203,842,869]" captionStart="FIGURES 830" captionStartId="4.[136,243,1901,1923]" captionTargetBox="[223,1374,227,1830]" captionTargetId="figure-19@4.[201,1386,190,1876]" captionTargetPageId="4" captionText="FIGURES 830. Bourrelyodesmus comperei sp. nov. (816): frontal view (8, 11, 1316), lateral view (9), apical view (10, 12), morphological variation (1316). Xanthidium concinnum var. longispinum var. nov. (1724): frontal view (17, 20, 2324), lateral view (18, 21), apical view (19, 22), morphological variation (2324). Xanthidium mamillosum var. mediolaeve (2530): frontal view (25, 28), empty cell after reproduction (26), zygospore (27), lateral view (29), apical view (30). Scale Bar: 10 μm, except Fig. 25, 2830 (40 μm), Fig. 2627 (50 μm, horizontal bar)." figureDoi="http://doi.org/10.5281/zenodo.6331882" httpUri="https://zenodo.org/record/6331882/files/figure.png" pageId="8" pageNumber="236">2530</figureCitation>
)
</treatmentCitationGroup>
</heading>
</paragraph>
</subSubSection>
<subSubSection id="999237A7FFF2AC0847A8FC4DFC55FBCE" pageId="8" pageNumber="236" type="reference_group">
<paragraph id="D137642CFFF2AC0847A8FC4DFAC8FC5F" blockId="8.[136,1309,878,905]" box="[136,1309,878,905]" pageId="8" pageNumber="236">
Basionym:
<taxonomicName id="16881FAFFFF2AC084628FC4DFBA2FC5E" authority="Gronblad (1945: 22" authorityName="Gronblad" authorityYear="1945" box="[264,1143,878,905]" class="Conjugatophyceae" family="Desmidiaceae" form="mediolaeve" genus="Xanthidium" kingdom="Plantae" order="Zygnematales" pageId="8" pageNumber="236" phylum="Charophyta" rank="form" species="antilopaeum" variety="mamillosum">
<emphasis id="E3FCB83EFFF2AC084628FC4DFDFEFC5F" bold="true" box="[264,555,878,905]" italics="true" pageId="8" pageNumber="236">Xanthidium antilopaeum</emphasis>
var.
<emphasis id="E3FCB83EFFF2AC084542FC4DFD24FC5F" bold="true" box="[610,753,878,905]" italics="true" pageId="8" pageNumber="236">mamillosum</emphasis>
f.
<emphasis id="E3FCB83EFFF2AC08442FFC4DFC45FC5F" bold="true" box="[783,912,878,905]" italics="true" pageId="8" pageNumber="236">mediolaeve</emphasis>
<bibRefCitation id="B51919DDFFF2AC0844B7FC4DFBA2FC5E" author="Gronblad, R." box="[919,1143,878,905]" pageId="8" pageNumber="236" pagination="1 - 44" refId="ref8222" refString="Gronblad, R. (1945) De algis brasiliensibus. Praecipue desmidiaceis in regione inferiore fluminis Amazonas a professore August Ginzberger (Wien) anno MCMXXVII collectis. Acta Societatis Scienctiarum Fennicae 2 (6): 1 - 44." type="journal article" year="1945">Grönblad (1945: 22</bibRefCitation>
</taxonomicName>
, Pl. 7, fig.149)
</paragraph>
<paragraph id="D137642CFFF2AC0847A8FC95FC55FBCE" blockId="8.[136,1452,950,1949]" pageId="8" pageNumber="236">
<emphasis id="E3FCB83EFFF2AC0847A8FC95FE9CFC06" bold="true" box="[136,329,950,976]" pageId="8" pageNumber="236">Cell dimensions</emphasis>
:—length without spines 6566 μm, with spines 110120 μm, width without spines 58.660 μm, with spines 131140 μm, thickness 19 µm, isthmus 26 μm, spines 3140 μm long. Zygospore 100 µm in diameter (including spines), globular in shape and provided with long spines.
</paragraph>
</subSubSection>
<subSubSection id="999237A7FFF2AC08479DFB01FCCEF84B" pageId="8" pageNumber="236" type="materials_examined">
<paragraph id="D137642CFFF2AC08479DFB01FF31FBB7" blockId="8.[136,1452,950,1949]" pageId="8" pageNumber="236">
<emphasis id="E3FCB83EFFF2AC08479DFB01FE71FBEA" bold="true" box="[189,420,1058,1084]" pageId="8" pageNumber="236">Material examined</emphasis>
:—
<materialsCitation id="61E06E71FFF2AC0846E6FB01FF35FBB7" ID-GBIF-Occurrence="3698904301" collectionCode="HUEFS" country="Brazil" county="Andarai" location="Lagoa do Baiano. Samples" municipality="Marimbus do Baiano" pageId="8" pageNumber="236" specimenCode="HUEFS 253745" specimenCount="1" stateProvince="Bahia">
<collectingCountry id="A99F24BCFFF2AC0846E6FB01FDE4FBEA" box="[454,561,1058,1084]" name="Brazil" pageId="8" pageNumber="236">BRAZIL</collectingCountry>
.
<collectingRegion id="134CAACEFFF2AC08451FFB01FD50FBEA" box="[575,645,1058,1084]" country="Brazil" name="Bahia" pageId="8" pageNumber="236">Bahia</collectingRegion>
:
<collectingCounty id="38561CA0FFF2AC0845B2FB01FD3AFBEA" box="[658,751,1058,1084]" pageId="8" pageNumber="236">Andaraí</collectingCounty>
,
<collectingMunicipality id="3153FE56FFF2AC0845DFFB01FC22FBEA" box="[767,1015,1058,1084]" pageId="8" pageNumber="236">Marimbus do Baiano</collectingMunicipality>
,
<location id="D45732F7FFF2AC084326FB00FA91FBEA" LSID="urn:lsid:plazi:treatment:5921D53AFFF2AC0847A8FC69FCCEF84B:D45732F7FFF2AC084326FB00FA91FBEA" box="[1030,1348,1058,1085]" country="Brazil" county="Andarai" municipality="Marimbus do Baiano" name="Lagoa do Baiano. Samples" pageId="8" pageNumber="236" stateProvince="Bahia">Lagoa do Baiano. Samples</location>
:
<specimenCode id="812ECC57FFF2AC084273FB01FF35FBB7" collectionCode="HUEFS" country="Brazil" httpUri="http://biocol.org/urn:lsid:biocol.org:col:15506" lsid="urn:lsid:biocol.org:col:15506" name="Universidade Estadual de Feira de Santana" pageId="8" pageNumber="236" type="Herbarium">HUEFS 253745</specimenCode>
</materialsCitation>
.
</paragraph>
<paragraph id="D137642CFFF2AC08479DFB49FD8CFB7F" blockId="8.[136,1452,950,1949]" pageId="8" pageNumber="236">
<emphasis id="E3FCB83EFFF2AC08479DFB49FECCFB52" bold="true" box="[189,281,1130,1156]" pageId="8" pageNumber="236">Habitat</emphasis>
:—Taxon was rare in Marimbus do Baiano, found associated only to
<taxonomicName id="16881FAFFFF2AC08432EFB48FBAEFB52" authorityName="Linnaeus" authorityYear="1753" box="[1038,1147,1130,1156]" class="Magnoliopsida" family="Lentibulariaceae" genus="Utricularia" kingdom="Plantae" order="Lamiales" pageId="8" pageNumber="236" phylum="Tracheophyta" rank="species" species="foliosa">
<emphasis id="E3FCB83EFFF2AC08432EFB48FBAEFB52" box="[1038,1147,1130,1156]" italics="true" pageId="8" pageNumber="236">U. foliosa</emphasis>
</taxonomicName>
; EC 0.04 mS.
<superScript id="26FDC964FFF2AC084233FB49FA90FBAE" attach="left" box="[1299,1349,1130,1156]" fontSize="6" pageId="8" pageNumber="236">cm-1</superScript>
;
<collectionCode id="B799FCE9FFF2AC084272FB49FAAFFB52" box="[1362,1402,1130,1156]" country="France" lsid="urn:lsid:biocol.org:col:14073" name="Société d'Agriculture Sciences et Arts" pageId="8" pageNumber="236" type="Herbarium">DO</collectionCode>
6.6; TDS 0.03; pH 7.0;
<collectionCode id="B799FCE9FFF2AC08467EFBACFEBAFB7F" box="[350,367,1167,1193]" name="Tavera, Department of Geology and Geophysics" pageId="8" pageNumber="236">T</collectionCode>
31.4 °
<collectionCode id="B799FCE9FFF2AC084698FBADFE1BFB7E" box="[440,462,1166,1192]" country="Denmark" name="University of Copenhagen" pageId="8" pageNumber="236" type="Herbarium">C</collectionCode>
; WT
<quantity id="1670C9C9FFF2AC08452CFBADFD80FB7F" box="[524,597,1166,1193]" metricMagnitude="-1" metricUnit="m" metricValue="3.6" pageId="8" pageNumber="236" unit="cm" value="36.0">36 cm</quantity>
;
</paragraph>
<paragraph id="D137642CFFF2AC08479DFB91FC64FAC2" blockId="8.[136,1452,950,1949]" pageId="8" pageNumber="236">
<emphasis id="E3FCB83EFFF2AC08479DFB91FE7BFB1A" bold="true" box="[189,430,1202,1228]" pageId="8" pageNumber="236">Taxonomic notes:—</emphasis>
This taxon was originally proposed by
<bibRefCitation id="B51919DDFFF2AC084453FB91FB8AFB1A" author="Gronblad, R." box="[883,1119,1202,1229]" pageId="8" pageNumber="236" pagination="1 - 44" refId="ref8222" refString="Gronblad, R. (1945) De algis brasiliensibus. Praecipue desmidiaceis in regione inferiore fluminis Amazonas a professore August Ginzberger (Wien) anno MCMXXVII collectis. Acta Societatis Scienctiarum Fennicae 2 (6): 1 - 44." type="journal article" year="1945">Grönblad (1945: 22)</bibRefCitation>
from specimens collected in Santarém,
<collectingRegion id="134CAACEFFF2AC084622FBF5FEA2FB26" box="[258,375,1238,1264]" country="Brazil" name="Para" pageId="8" pageNumber="236">Pará State</collectingRegion>
, Amazon Basin, as
<taxonomicName id="16881FAFFFF2AC084579FBF4FBBEFB26" authorityName="Gronblad" authorityYear="1945" box="[601,1131,1238,1265]" class="Conjugatophyceae" family="Desmidiaceae" form="mediolaeve" genus="Xanthidium" kingdom="Plantae" order="Zygnematales" pageId="8" pageNumber="236" phylum="Charophyta" rank="form" species="antilopaeum" variety="mamillosum">
<emphasis id="E3FCB83EFFF2AC084579FBF4FCD3FB26" box="[601,774,1238,1264]" italics="true" pageId="8" pageNumber="236">X. antilopaeum</emphasis>
var.
<emphasis id="E3FCB83EFFF2AC084461FBF5FC1FFB26" box="[833,970,1238,1264]" italics="true" pageId="8" pageNumber="236">mamillosum</emphasis>
f.
<emphasis id="E3FCB83EFFF2AC0844CCFBF5FBBEFB26" box="[1004,1131,1238,1264]" italics="true" pageId="8" pageNumber="236">mediolaeve</emphasis>
</taxonomicName>
. Later,
<bibRefCitation id="B51919DDFFF2AC0843E5FBF5FF6EFAC2" author="Coute, A. &amp; Tell, G." pageId="8" pageNumber="236" pagination="1 - 228" refId="ref7655" refString="Coute, A. &amp; Tell, G. (1981) Ultrastructure de la paroi cellulaire des desmidiacees au microscope electronique a balaiage. Beih. Nova Hedwigia 68: 1 - 228." type="journal article" year="1981">Couté &amp; Tell (1981: 197)</bibRefCitation>
raised that form to a varietal level:
<taxonomicName id="16881FAFFFF2AC08456BFBD8FC78FAC2" authorityName="Coute &amp; Tell" authorityYear="1981" baseAuthorityName="Gronblad" box="[587,941,1274,1301]" class="Conjugatophyceae" family="Desmidiaceae" genus="Xanthidium" kingdom="Plantae" order="Zygnematales" pageId="8" pageNumber="236" phylum="Charophyta" rank="variety" species="mamillosum" variety="mediolaeve">
<emphasis id="E3FCB83EFFF2AC08456BFBD8FD26FAC2" box="[587,755,1274,1300]" italics="true" pageId="8" pageNumber="236">X. mamillosum</emphasis>
var.
<emphasis id="E3FCB83EFFF2AC08440AFBD9FC78FAC2" box="[810,941,1274,1300]" italics="true" pageId="8" pageNumber="236">mediolaeve</emphasis>
</taxonomicName>
<emphasis id="E3FCB83EFFF2AC08448DFBD9FC64FAC2" box="[941,945,1274,1300]" italics="true" pageId="8" pageNumber="236">.</emphasis>
</paragraph>
<paragraph id="D137642CFFF2AC08479DFA3DFB78FA73" blockId="8.[136,1452,950,1949]" pageId="8" pageNumber="236">
Morphologically,
<taxonomicName id="16881FAFFFF2AC0846A8FA3CFDEEFAEE" authorityName="Coute &amp; Tell" authorityYear="1981" baseAuthorityName="Gronblad" box="[392,571,1310,1337]" class="Conjugatophyceae" family="Desmidiaceae" genus="Xanthidium" kingdom="Plantae" order="Zygnematales" pageId="8" pageNumber="236" phylum="Charophyta" rank="variety" species="mamillosum" variety="mediolaeve">
var.
<emphasis id="E3FCB83EFFF2AC08469BFA3DFDEEFAEE" box="[443,571,1310,1336]" italics="true" pageId="8" pageNumber="236">mediolaeve</emphasis>
</taxonomicName>
differs from the nominate variety by not having a spine in the midregion of semicells, and smallest cell dimensions (
<bibRefCitation id="B51919DDFFF2AC084567FA61FCF7FA8A" author="Prescott, G. W. &amp; Bicudo, C. E. M. &amp; Vinyard, W. C." box="[583,802,1346,1372]" pageId="8" pageNumber="236" refId="ref8840" refString="Prescott, G. W., Bicudo, C. E. M. &amp; Vinyard, W. C. (1982) A Synopsis of North American Desmids. Part II. Desmidiaceae: Placodermae. Section 4. University of Nebraska Press, Lincoln, 700 pp." type="book" year="1982">
Prescott
<emphasis id="E3FCB83EFFF2AC084589FA60FD35FA8A" box="[681,736,1346,1372]" italics="true" pageId="8" pageNumber="236">et al.</emphasis>
1982
</bibRefCitation>
). It somewhat resembles
<taxonomicName id="16881FAFFFF2AC084318FA60FDC1FA57" authority="(Gronblad) Kurt Forster (1969: 62)" authorityName="Kurt Forster" authorityPageNumber="62" authorityYear="1969" baseAuthorityName="Gronblad" class="Conjugatophyceae" family="Desmidiaceae" genus="Xanthidium" kingdom="Plantae" order="Zygnematales" pageId="8" pageNumber="236" phylum="Charophyta" rank="variety" species="mamillosum" variety="sexaculeatum">
<emphasis id="E3FCB83EFFF2AC084318FA60FB0BFA8A" box="[1080,1246,1346,1372]" italics="true" pageId="8" pageNumber="236">X. mamillosum</emphasis>
var.
<emphasis id="E3FCB83EFFF2AC084233FA61FA7EFA8A" box="[1299,1451,1346,1372]" italics="true" pageId="8" pageNumber="236">sexaculeatum</emphasis>
(Grönblad) Kurt
<bibRefCitation id="B51919DDFFF2AC084666FA44FDC1FA57" author="Forster, K." box="[326,532,1382,1409]" pageId="8" pageNumber="236" pagination="5 - 116" refId="ref7977" refString="Forster, K. (1969) Amazonische Desmidieen 1. Areal Santarem. Amazoniana 2 (1 - 2): 5 - 116, pl. 1 - 56." type="journal article" year="1969">Förster (1969: 62)</bibRefCitation>
</taxonomicName>
, but this latter
<taxonomicName id="16881FAFFFF2AC08459BFA45FC8CFA56" box="[699,857,1382,1408]" pageId="8" pageNumber="236" rank="variety" variety="differs">variety differs</taxonomicName>
by having basal angles of semicells decorated by the single spine, and a ring of pores around a central one, visible in the apical view (
<bibRefCitation id="B51919DDFFF2AC08432CFAA9FB75FA73" author="Forster, K." box="[1036,1184,1418,1445]" pageId="8" pageNumber="236" pagination="5 - 116" refId="ref7977" refString="Forster, K. (1969) Amazonische Desmidieen 1. Areal Santarem. Amazoniana 2 (1 - 2): 5 - 116, pl. 1 - 56." type="journal article" year="1969">Förster 1969</bibRefCitation>
).
</paragraph>
<paragraph id="D137642CFFF2AC08479DFA8DFB6BF9AB" blockId="8.[136,1452,950,1949]" pageId="8" pageNumber="236">
<bibRefCitation id="B51919DDFFF2AC08479DFA8DFE43FA1E" author="Thomasson, K." box="[189,406,1454,1480]" pageId="8" pageNumber="236" pagination="1 - 57" refId="ref9701" refString="Thomasson, K. (1971) Amazonian desmids. Memoires Institute Royal des Sciences Naturelles de Belgique 86: 1 - 57." type="journal article" year="1971">Thomasson (1971)</bibRefCitation>
, studying material from
<taxonomicName id="16881FAFFFF2AC084594FA8CFC8BFA1E" authorityName="Forster" authorityYear="1964" box="[692,862,1454,1480]" class="Conjugatophyceae" family="Desmidiaceae" genus="Xanthidium" kingdom="Plantae" order="Zygnematales" pageId="8" pageNumber="236" phylum="Charophyta" rank="species" species="mamillosum">
<emphasis id="E3FCB83EFFF2AC084594FA8CFC8BFA1E" box="[692,862,1454,1480]" italics="true" pageId="8" pageNumber="236">X. mamillosum</emphasis>
</taxonomicName>
collected in Maica Lake (Santarém,
<collectingRegion id="134CAACEFFF2AC08422CFA8DFA95FA1E" box="[1292,1344,1454,1480]" country="Brazil" name="Para" pageId="8" pageNumber="236">Pará</collectingRegion>
) and Rio Preto da Eva Lake (Rio Preto da Eva,
<collectingRegion id="134CAACEFFF2AC08451BFAF1FD63FA3A" box="[571,694,1490,1516]" country="Brazil" name="Amazonas" pageId="8" pageNumber="236">Amazonas</collectingRegion>
), Amazon Basin, observed that taxa have a typical mamillate base, and some specimens have 12 frontal spines. The author considered that all
<taxonomicName id="16881FAFFFF2AC0844D8FAD5FB51F9C6" box="[1016,1156,1526,1552]" form="under" pageId="8" pageNumber="236" rank="form">forma under</taxonomicName>
<taxonomicName id="16881FAFFFF2AC0843ADFAD4FAE2F9C6" authorityName="Forster" authorityYear="1964" box="[1165,1335,1526,1552]" class="Conjugatophyceae" family="Desmidiaceae" genus="Xanthidium" kingdom="Plantae" order="Zygnematales" pageId="8" pageNumber="236" phylum="Charophyta" rank="species" species="mamillosum">
<emphasis id="E3FCB83EFFF2AC0843ADFAD4FAE2F9C6" box="[1165,1335,1526,1552]" italics="true" pageId="8" pageNumber="236">X. mamillosum</emphasis>
</taxonomicName>
described by
<bibRefCitation id="B51919DDFFF2AC08478CF939FEBEF9E3" author="Gronblad, R." box="[172,363,1562,1589]" pageId="8" pageNumber="236" pagination="1 - 44" refId="ref8222" refString="Gronblad, R. (1945) De algis brasiliensibus. Praecipue desmidiaceis in regione inferiore fluminis Amazonas a professore August Ginzberger (Wien) anno MCMXXVII collectis. Acta Societatis Scienctiarum Fennicae 2 (6): 1 - 44." type="journal article" year="1945">Grönblad (1945)</bibRefCitation>
, besides
<taxonomicName id="16881FAFFFF2AC0846F3F938FBDBF9E2" authority="Kurt Forster (1981: 247)" authorityName="Kurt Forster" authorityPageNumber="247" authorityYear="1981" box="[467,1038,1562,1589]" class="Conjugatophyceae" family="Desmidiaceae" genus="Xanthidium" kingdom="Plantae" order="Zygnematales" pageId="8" pageNumber="236" phylum="Charophyta" rank="variety" species="canadense" variety="borgei">
<emphasis id="E3FCB83EFFF2AC0846F3F938FDBCF9E2" box="[467,617,1562,1588]" italics="true" pageId="8" pageNumber="236">X. canadense</emphasis>
var.
<emphasis id="E3FCB83EFFF2AC084583F939FD3EF9E2" box="[675,747,1562,1588]" italics="true" pageId="8" pageNumber="236">borgei</emphasis>
Kurt
<bibRefCitation id="B51919DDFFF2AC08440FF938FBDBF9E2" author="Forster, K." box="[815,1038,1562,1589]" pageId="8" pageNumber="236" pagination="226 - 235" refId="ref8030" refString="Forster, K. (1981) Revision und Validierung von Desmidiaceen-Namen aus fruheren Publikationen. 1. Algological Studies / Archiv fur Hydrobiologie Supplement 28: 226 - 235." type="journal article" year="1981">Förster (1981: 247)</bibRefCitation>
</taxonomicName>
, are considered to belong within the morphological range of the species. Until molecular studies to be conducted to verify the delimitation of the varieties of
<taxonomicName id="16881FAFFFF2AC084786F940FE9BF9AA" authorityName="Forster" authorityYear="1964" box="[166,334,1634,1660]" class="Conjugatophyceae" family="Desmidiaceae" genus="Xanthidium" kingdom="Plantae" order="Zygnematales" pageId="8" pageNumber="236" phylum="Charophyta" rank="species" species="mamillosum">
<emphasis id="E3FCB83EFFF2AC084786F940FE9BF9AA" box="[166,334,1634,1660]" italics="true" pageId="8" pageNumber="236">X. mamillosum</emphasis>
</taxonomicName>
, we consider more appropriate to maintain
<taxonomicName id="16881FAFFFF2AC084417F940FC32F9AA" authorityName="Coute &amp; Tell" authorityYear="1981" baseAuthorityName="Gronblad" box="[823,999,1634,1661]" class="Conjugatophyceae" family="Desmidiaceae" genus="Xanthidium" kingdom="Plantae" order="Zygnematales" pageId="8" pageNumber="236" phylum="Charophyta" rank="variety" species="mamillosum" variety="mediolaeve">
var.
<emphasis id="E3FCB83EFFF2AC084447F941FC32F9AA" box="[871,999,1634,1660]" italics="true" pageId="8" pageNumber="236">mediolaeve</emphasis>
</taxonomicName>
as a distinct taxon.
</paragraph>
<paragraph id="D137642CFFF2AC08479DF9A5FDD0F912" blockId="8.[136,1452,950,1949]" pageId="8" pageNumber="236">
The zygospore of
<taxonomicName id="16881FAFFFF2AC0846A9F9A4FD20F976" box="[393,757,1670,1697]" class="Conjugatophyceae" family="Desmidiaceae" genus="Xanthidium" kingdom="Plantae" order="Zygnematales" pageId="8" pageNumber="236" phylum="Charophyta" rank="variety" species="mammilosum" variety="mediolaeve">
<emphasis id="E3FCB83EFFF2AC0846A9F9A4FDE8F976" box="[393,573,1670,1696]" italics="true" pageId="8" pageNumber="236">X. mammilosum</emphasis>
var.
<emphasis id="E3FCB83EFFF2AC084555F9A5FD20F976" box="[629,757,1670,1696]" italics="true" pageId="8" pageNumber="236">mediolaeve</emphasis>
</taxonomicName>
analyzed resembles to format observed in
<taxonomicName id="16881FAFFFF2AC0843F5F9A4FA81F976" authorityName="Nordstedt" authorityYear="1870" box="[1237,1364,1670,1696]" class="Conjugatophyceae" family="Desmidiaceae" genus="Xanthidium" kingdom="Plantae" order="Zygnematales" pageId="8" pageNumber="236" phylum="Charophyta" rank="species" species="trilobum">
<emphasis id="E3FCB83EFFF2AC0843F5F9A4FA81F976" box="[1237,1364,1670,1696]" italics="true" pageId="8" pageNumber="236">X. trilobum</emphasis>
</taxonomicName>
, except by absence apical furcated spines.
</paragraph>
<paragraph id="D137642CFFF2AC08479DF9EDFAD7F8E6" blockId="8.[136,1452,950,1949]" pageId="8" pageNumber="236">
Details of the scanning electron microscopy (
<collectionCode id="B799FCE9FFF2AC084595F9EDFD27F93E" box="[693,754,1742,1768]" pageId="8" pageNumber="236">SEM</collectionCode>
) of the
<taxonomicName id="16881FAFFFF2AC084466F9ECFC20F93E" box="[838,1013,1742,1769]" class="Conjugatophyceae" family="Desmidiaceae" genus="Xanthidium" kingdom="Plantae" order="Zygnematales" pageId="8" pageNumber="236" phylum="Charophyta" rank="variety" species="mammilosum" variety="mediolaeve">
var.
<emphasis id="E3FCB83EFFF2AC084455F9EDFC20F93E" box="[885,1013,1742,1768]" italics="true" pageId="8" pageNumber="236">mediolaeve</emphasis>
</taxonomicName>
were presented by
<bibRefCitation id="B51919DDFFF2AC0843ECF9EDFF60F8DA" author="Coute, A. &amp; Tell, G." pageId="8" pageNumber="236" pagination="1 - 228" refId="ref7655" refString="Coute, A. &amp; Tell, G. (1981) Ultrastructure de la paroi cellulaire des desmidiacees au microscope electronique a balaiage. Beih. Nova Hedwigia 68: 1 - 228." type="journal article" year="1981">Couté &amp; Tell (1981: 207</bibRefCitation>
, Pl. 3, fig, 78), showing smooth facial semicells, punctuated cell walls, and spines with a characteristic mamillate base, similar to the specimens analyzed under photonic microscopy in the present study (
<figureCitation id="49B378A9FFF2AC08434CF835FB20F8E6" box="[1132,1269,1814,1841]" captionStart="FIGURES 830" captionStartId="4.[136,243,1901,1923]" captionTargetBox="[223,1374,227,1830]" captionTargetId="figure-19@4.[201,1386,190,1876]" captionTargetPageId="4" captionText="FIGURES 830. Bourrelyodesmus comperei sp. nov. (816): frontal view (8, 11, 1316), lateral view (9), apical view (10, 12), morphological variation (1316). Xanthidium concinnum var. longispinum var. nov. (1724): frontal view (17, 20, 2324), lateral view (18, 21), apical view (19, 22), morphological variation (2324). Xanthidium mamillosum var. mediolaeve (2530): frontal view (25, 28), empty cell after reproduction (26), zygospore (27), lateral view (29), apical view (30). Scale Bar: 10 μm, except Fig. 25, 2830 (40 μm), Fig. 2627 (50 μm, horizontal bar)." figureDoi="http://doi.org/10.5281/zenodo.6331882" httpUri="https://zenodo.org/record/6331882/files/figure.png" pageId="8" pageNumber="236">Figs. 25, 28</figureCitation>
).
</paragraph>
<paragraph id="D137642CFFF2AC08479DF818FCCEF84B" blockId="8.[136,1452,950,1949]" pageId="8" pageNumber="236">
In
<collectingCountry id="A99F24BCFFF2AC0847FCF819FEF6F882" box="[220,291,1850,1876]" name="Brazil" pageId="8" pageNumber="236">Brazil</collectingCountry>
, aside from the
<typeStatus id="0E33DA8EFFF2AC0846F6F818FDD3F883" box="[470,518,1851,1877]" pageId="8" pageNumber="236">type</typeStatus>
locality, the taxon under discussion has also been reported in
<collectingRegion id="134CAACEFFF2AC08439EF819FB2AF882" box="[1214,1279,1850,1876]" country="Brazil" name="Bahia" pageId="8" pageNumber="236">Bahia</collectingRegion>
(
<bibRefCitation id="B51919DDFFF2AC08422EF819FF16F8AE" author="Oliveira, I. B. &amp; Bicudo, C. E. M. &amp; Moura, C. W. N." pageId="8" pageNumber="236" pagination="89 - 93" refId="ref8632" refString="Oliveira, I. B., Bicudo, C. E. M. &amp; Moura, C. W. N. (2011) Octacanthium e Xanthidium (Desmidiaceae, Zygnematophyceae) em Camacari, estado da Bahia, Brasil. Sitientibus 11 (1): 89 - 93. http: // dx. doi. org / 10.13102 / scb 142" type="journal article" year="2011">
Oliveira
<emphasis id="E3FCB83EFFF2AC084253F818FA79F882" box="[1395,1452,1850,1876]" italics="true" pageId="8" pageNumber="236">et al.</emphasis>
2011
</bibRefCitation>
),
<collectingRegion id="134CAACEFFF2AC0847F8F87CFEBFF8AE" box="[216,362,1886,1913]" country="Brazil" name="Mato Grosso" pageId="8" pageNumber="236">Mato Grosso</collectingRegion>
(
<bibRefCitation id="B51919DDFFF2AC08465AF87DFD73F8AE" author="De-Lamonica-Freire, E. M." box="[378,678,1886,1912]" pageId="8" pageNumber="236" pagination="1 - 9" refId="ref7763" refString="De-Lamonica-Freire, E. M. (1992) O Genero Xanthidium (Zygnemaphyceae, Desmidiales) na estacao ecologica da Ilha de Taiama, estado de Mato Grosso, Brasil. Boletim do Instituto de Biociencias 1 (1): 1 - 9." type="journal article" year="1992">De-Lamonica-Freire 1992</bibRefCitation>
),
<collectingRegion id="134CAACEFFF2AC08459AF87DFCD3F8AE" box="[698,774,1886,1912]" country="Brazil" name="Parana" pageId="8" pageNumber="236">Paraná</collectingRegion>
(
<bibRefCitation id="B51919DDFFF2AC084436F87DFC09F8AE" author="Paula, A. C. M. &amp; Moresco, G. A. &amp; Bortolini, J. C. &amp; Jati, J. &amp; Reis, L. M. &amp; Rodrigues, L. C." box="[790,988,1886,1912]" pageId="8" pageNumber="236" pagination="417 - 431" refId="ref8763" refString="Paula, A. C. M., Moresco, G. A., Bortolini, J. C., Jati, J., Reis, L. M. &amp; Rodrigues, L. C. (2014) Os generos Staurastrum, Staurodesmus e Xanthidium em uma lagoa de inundacao, planicie de inundacao do alto rio Parana, Brasil. Iheringia 69 (2): 417 - 431." type="journal article" year="2014">
Paula
<emphasis id="E3FCB83EFFF2AC08447FF87CFC4DF8AE" box="[863,920,1886,1912]" italics="true" pageId="8" pageNumber="236">et al.</emphasis>
2014
</bibRefCitation>
), and
<collectingRegion id="134CAACEFFF2AC084301F87DFB46F8AE" box="[1057,1171,1886,1912]" country="Brazil" name="Sao Paulo" pageId="8" pageNumber="236">São Paulo</collectingRegion>
(
<bibRefCitation id="B51919DDFFF2AC084383F87DFAAEF8AE" author="Bicudo, C. E. M. &amp; Faustino, S. M. M. &amp; Godinho, L. R." box="[1187,1403,1886,1912]" pageId="8" pageNumber="236" refId="ref7089" refString="Bicudo, C. E. M., Faustino, S. M. M. &amp; Godinho, L. R. (2018) Flora Ficologica do Estado de Sao Paulo: Zygnemaphyceae, volume 4 parte 4. Rima, Sao Carlos, 321 pp." type="book" year="2018">
Bicudo
<emphasis id="E3FCB83EFFF2AC0843DEF87CFAE2F8AE" box="[1278,1335,1886,1912]" italics="true" pageId="8" pageNumber="236">et al.</emphasis>
2018
</bibRefCitation>
), all reported as
<taxonomicName id="16881FAFFFF2AC08462BF8A0FCC6F84A" authorityName="Gronblad" authorityYear="1945" box="[267,787,1922,1949]" class="Conjugatophyceae" family="Desmidiaceae" form="mediolaeve" genus="Xanthidium" kingdom="Plantae" order="Zygnematales" pageId="8" pageNumber="236" phylum="Charophyta" rank="form" species="antilopaeum" variety="mamillosum">
<emphasis id="E3FCB83EFFF2AC08462BF8A0FE63F84A" box="[267,438,1922,1948]" italics="true" pageId="8" pageNumber="236">X. antilopaeum</emphasis>
var.
<emphasis id="E3FCB83EFFF2AC0846CDF8A1FDA3F84A" box="[493,630,1922,1948]" italics="true" pageId="8" pageNumber="236">mamillosum</emphasis>
f.
<emphasis id="E3FCB83EFFF2AC0845B4F8A1FCC6F84A" box="[660,787,1922,1948]" italics="true" pageId="8" pageNumber="236">mediolaeve</emphasis>
</taxonomicName>
.
</paragraph>
</subSubSection>
</treatment>
</document>