<document ID-DOI="10.11646/zootaxa.5249.2.3" ID-ISSN="1175-5326" ID-Zenodo-Dep="7687250" ID-ZooBank="DEF7E5DA-ABC9-4501-B155-5C9BCE075D08" checkinTime="1677655618426" checkinUser="plazi" docAuthor="Boury-Esnault, Nicole, Bellan, Gerard, Bellan-Santini, Denise, Boudouresque, Charles-Francois, Chevaldonné, Pierre, Dias, Alrick, Faget, Daniel, Harmelin, Jean-Georges, Harmelin-Vivien, Mireille, Lejeusne, Christophe, Perez, Thierry, Vacelet, Jean &amp; Verlaque, Marc" docDate="2023" docId="039F1A65FFCBFFB5FF48EB34FA9FEBF2" docLanguage="en" docName="zootaxa.5249.2.3.pdf" docOrigin="Zootaxa 5249 (2)" docSource="http://dx.doi.org/10.11646/zootaxa.5249.2.3" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Peyssonnelia rosa-marina Boudouresque &amp; Denizot 1973" docType="treatment" docVersion="3" lastPageNumber="236" masterDocId="FFA6621DFFDCFFA2FFDFEE60FF8AED7C" masterDocTitle="The Station Marine d’Endoume, Marseille: 150 years of natural history" masterLastPageNumber="252" masterPageNumber="213" pageNumber="236" updateTime="1677677299466" updateUser="valdenar" zenodo-license-document="CLOSED">
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<mods:title>The Station Marine d’Endoume, Marseille: 150 years of natural history</mods:title>
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<mods:namePart>Boury-Esnault, Nicole</mods:namePart>
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<mods:affiliation>IMBE, CNRS, Aix Marseille Université, IRD, Avignon Université, Station Marine d’Endoume, Rue de la Batterie des Lions, 13007 Marseille, France &amp; nicole. boury-esnault @ orange. fr; https: // orcid. org / 0000 - 0003 - 1728 - 6749</mods:affiliation>
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<mods:namePart>Bellan, Gerard</mods:namePart>
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<mods:affiliation>IMBE, CNRS, Aix Marseille Université, IRD, Avignon Université, Station Marine d’Endoume, Rue de la Batterie des Lions, 13007 Marseille, France &amp; gerard. bellan @ imbe. fr; https: // orcid. org / 0000 - 0002 - 8483 - 6993</mods:affiliation>
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<mods:namePart>Bellan-Santini, Denise</mods:namePart>
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<mods:affiliation>IMBE, CNRS, Aix Marseille Université, IRD, Avignon Université, Station Marine d’Endoume, Rue de la Batterie des Lions, 13007 Marseille, France &amp; denise. bellan @ imbe. fr; https: // orcid. org / 0000 - 0002 - 4814 - 1430</mods:affiliation>
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<mods:namePart>Boudouresque, Charles-Francois</mods:namePart>
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<mods:affiliation>Aix Marseille Université, Université de Toulon, CNRS, IRD, MIO, Campus de Luminy, 13288 Marseille cedex 09, France TELEMME, Aix Marseille Université, CNRS, Maison Méditerranéenne des Sciences de l’Homme (MMSH), 5 rue du Château de l’horloge, BP 647, 13094 Aix-en-Provence, France &amp; charles. boudouresque @ mio. osupytheas. fr; https: // orcid. org / 0000 - 0001 - 8206 - 7169</mods:affiliation>
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<mods:namePart>Chevaldonné, Pierre</mods:namePart>
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<mods:affiliation>IMBE, CNRS, Aix Marseille Université, IRD, Avignon Université, Station Marine d’Endoume, Rue de la Batterie des Lions, 13007 Marseille, France &amp; pierre. chevaldonne @ imbe. fr; https: // orcid. org / 0000 - 0003 - 0507 - 7747</mods:affiliation>
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<mods:namePart>Dias, Alrick</mods:namePart>
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<mods:affiliation>IMBE, CNRS, Aix Marseille Université, IRD, Avignon Université, Station Marine d’Endoume, Rue de la Batterie des Lions, 13007 Marseille, France &amp; alrick. dias @ imbe. fr; https: // orcid. org / 0000 - 0002 - 2088 - 278 X</mods:affiliation>
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<mods:namePart>Harmelin, Jean-Georges</mods:namePart>
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<mods:affiliation>GIS Posidonie, MIO, CNRS, Aix Marseille Université, Université de Toulon, IRD, Station Marine d’Endoume, Rue de la Batterie des Lions, 13007 Marseille, France. &amp; jean-georges. harmelin @ mio. osupytheas. fr; https: // orcid. org / 0000 - 0003 - 4499 - 9023</mods:affiliation>
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<mods:namePart>Harmelin-Vivien, Mireille</mods:namePart>
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<mods:affiliation>Aix Marseille Université, Université de Toulon, CNRS, IRD, MIO, Campus de Luminy, 13288 Marseille cedex 09, France TELEMME, Aix Marseille Université, CNRS, Maison Méditerranéenne des Sciences de l’Homme (MMSH), 5 rue du Château de l’horloge, BP 647, 13094 Aix-en-Provence, France &amp; mireille. harmelin. vivien @ gmail. com; https: // orcid. org / 0000 - 0003 - 3085 - 2899</mods:affiliation>
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<mods:namePart>Lejeusne, Christophe</mods:namePart>
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<mods:affiliation>IMBE, CNRS, Aix Marseille Université, IRD, Avignon Université, Station Marine d’Endoume, Rue de la Batterie des Lions, 13007 Marseille, France &amp; christophe. lejeusne @ imbe. fr; https: // orcid. org / 0000 - 0002 - 8821 - 3849</mods:affiliation>
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<mods:namePart>Perez, Thierry</mods:namePart>
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<mods:affiliation>IMBE, CNRS, Aix Marseille Université, IRD, Avignon Université, Station Marine d’Endoume, Rue de la Batterie des Lions, 13007 Marseille, France &amp; thierry. perez @ imbe. fr; https: // orcid. org / 0000 - 0003 - 1826 - 9318</mods:affiliation>
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<mods:namePart>Vacelet, Jean</mods:namePart>
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<mods:affiliation>IMBE, CNRS, Aix Marseille Université, IRD, Avignon Université, Station Marine d’Endoume, Rue de la Batterie des Lions, 13007 Marseille, France &amp; jean. vacelet @ imbe. fr; https: // orcid. org / 0000 - 0001 - 6035 - 2372</mods:affiliation>
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<mods:namePart>Verlaque, Marc</mods:namePart>
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<mods:affiliation>Aix Marseille Université, Université de Toulon, CNRS, IRD, MIO, Campus de Luminy, 13288 Marseille cedex 09, France TELEMME, Aix Marseille Université, CNRS, Maison Méditerranéenne des Sciences de l’Homme (MMSH), 5 rue du Château de l’horloge, BP 647, 13094 Aix-en-Provence, France &amp; marc. verlaque @ mio. osupytheas. fr; https: // orcid. org / 0000 - 0001 - 6644 - 805 X</mods:affiliation>
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<taxonomicName authority="Boudouresque &amp; Denizot, 1973" authorityName="Boudouresque &amp; Denizot" authorityYear="1973" box="[151,822,1364,1391]" family="Peyssonneliaceae" genus="Peyssonnelia" kingdom="Plantae" order="Cryptonemiales" pageId="23" pageNumber="236" phylum="Rhodophyta" rank="species" species="rosa-marina">
<emphasis bold="true" box="[151,450,1364,1391]" italics="true" pageId="23" pageNumber="236">Peyssonnelia rosa-marina</emphasis>
<bibRefCitation author="Boudouresque, C. F. &amp; Denizot, M." box="[456,822,1364,1390]" pageId="23" pageNumber="236" pagination="17 - 27" refId="ref17547" refString="Boudouresque, C. F. &amp; Denizot, M. (1973) Recherches sur le genre Peyssonnelia (Rhodophycees). I. Peyssonnelia rosa-marina sp. nov. et Peyssonnelia bornetii sp. nov. Giornale Botanico Italiano, 107 (1), 17 - 27. https: // doi. org / 10.1016 / 0022 - 0981 (93) 90067 - X" type="journal article" year="1973">Boudouresque &amp; Denizot, 1973</bibRefCitation>
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(
<figureCitation box="[835,905,1364,1390]" captionStart="FIGURE 9" captionStartId="25.[152,255,1169,1193]" captionTargetBox="[151,1436,181,1145]" captionTargetId="figure-18@25.[151,1436,181,1145]" captionTargetPageId="25" captionText="FIGURE 9. Peyssonnelia rosa-marina in its habitat on the Calanques coast, Figuerolles (Provence), 13 m depth. Photo Jean- Pierre Miquel. Total length ca. 5 cm." figureDoi="http://doi.org/10.5281/zenodo.7687270" httpUri="https://zenodo.org/record/7687270/files/figure.png" pageId="23" pageNumber="236">Fig. 9</figureCitation>
): an unsuspected Mediterranean rose garden
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It is perhaps one of the most abundant seaweeds in the Mediterranean Sea, since it thrives from the infralittoral to the widely extended and widespread coastal detritic bottoms, in the circalittoral, where it is often dominant. It is also a particularly elegant macrophyte, resembling a calcified rosebud, hence its name, 
<taxonomicName authorityName="Boudouresque &amp; Denizot" authorityYear="1973" box="[1077,1371,1472,1498]" family="Peyssonneliaceae" genus="Peyssonnelia" kingdom="Plantae" order="Cryptonemiales" pageId="23" pageNumber="236" phylum="Rhodophyta" rank="species" species="rosa-marina">
<emphasis box="[1077,1371,1472,1498]" italics="true" pageId="23" pageNumber="236">Peyssonnelia rosa-marina</emphasis>
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. Like many red algae, this seaweed can live in rather low irradiance down to ca. 
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depth; it is an important producer of carbonate sediment and is furthermore an ecosystem engineer that takes a significant part in the construction of the coralligenous beds so characteristic of the Mediterranean. Yet, it has long been confused with its sister species, 
<taxonomicName box="[151,440,1616,1642]" family="Peyssonneliaceae" genus="Peyssonnelia" kingdom="Plantae" order="Cryptonemiales" pageId="23" pageNumber="236" phylum="Rhodophyta" rank="species" species="polymorpha">
<emphasis box="[151,440,1616,1642]" italics="true" pageId="23" pageNumber="236">Peyssonnelia polymorpha</emphasis>
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, until the 1970s. It was then very surprising to realize that such an abundant, conspicuous, and well-characterized species, both by its morphology and anatomy, had been overlooked for so long.
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