<documentid="D7CCC19AA1CFA9B10BB33C7B93156521"ID-DOI="10.5852/ejt.2020.639"ID-GBIF-Dataset="39b1b95c-093f-4a81-8c08-216f8ecb572b"ID-ISSN="2118-9773"ID-Zenodo-Dep="3786601"IM.materialsCitations_approvedBy="felipe"IM.metadata_approvedBy="felipe"IM.tables_approvedBy="felipe"IM.taxonomicNames_approvedBy="felipe"IM.treatments_approvedBy="felipe"checkinTime="1588685020083"checkinUser="valdenar"docAuthor="Rocha, Amanda Macêdo & Melo, José Iranildo Miranda de"docDate="2020"docId="B073879AD154FF8FB723F95C6DB7FD13"docLanguage="en"docName="ejt-639_rocha_melo.pdf.imf"docOrigin="European Journal of Taxonomy 639"docStyle="DocumentStyle:EF2B578F1D15862ADE45B0C07C620911.22:EJT.2018-.journal_article.type1"docStyleId="EF2B578F1D15862ADE45B0C07C620911"docStyleName="EJT.2018-.journal_article.type1"docStyleVersion="22"docTitle="Ludwigia octovalvis P. H. Raven"docType="treatment"docVersion="10"lastPageNumber="21"masterDocId="4C4AFFE2D145FF9BB516FFD76E1DFFF8"masterDocTitle="Diversity and distribution of Ludwigia (Onagraceae) in Paraíba State, Northeastern Brazil"masterLastPageNumber="24"masterPageNumber="1"pageNumber="18"updateTime="1720234205360"updateUser="felipe">
<mods:titleid="D2D3F47C4593B6FEA1528D23E362C35C">Diversity and distribution of Ludwigia (Onagraceae) in Paraíba State, Northeastern Brazil</mods:title>
<mods:affiliationid="9EBA3058C0CE40977A406A9ACE625561">State University of Bahia, Department of Education, Postgraduate Programme in Vegetal Biodiversity, HUNEB Herbarium (Collection Paulo Afonso), Campus VIII, Rua do Gangorra, 503, Paulo Afonso, Bahia, CEP: 48600 - 000, Brazil.</mods:affiliation>
<mods:namePartid="E2646F172FBF892FA61D13941B43CF2D">Melo, José Iranildo Miranda de</mods:namePart>
<mods:affiliationid="30E931C24EF799BA8DB8F949E98FB3B3">State University of Paraíba, Biological Sciences and Health Center, Department of Biology, Campina Grande, Paraíba, CEP: 58429 - 500, Brazil</mods:affiliation>
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<figureCitationid="A0E12A09D154FF8AB61DF9786D04F931"box="[779,793,1711,1737]"captionStart="Fig"captionStartId="15.[189,232,1838,1864]"captionTargetBox="[189,1397,265,1797]"captionTargetId="figure@15.[189,1398,265,1797]"captionTargetPageId="15"captionText="Fig. 7. a–c. Ludwigia leptocarpa (Nutt.) H.Hara. a. Habit. b. Flowering branch. c. Detail of indumentum. – d–h. L. octovalvis (Jacq.) P.H.Raven. d. Population. e. Habit. f–g. Flower. h. Fruits. Photos: A.M. Rocha."figureDoi="http://doi.org/10.5281/zenodo.3786615"httpUri="https://zenodo.org/record/3786615/files/figure.png"pageId="17"pageNumber="18">7</figureCitation>
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<taxonomicNameid="FFDA4D0FD157FF89B450F90B6D80F90E"authority="(Jacq.) P. H. Raven, A. M. Rocha"authorityName="P. H. Raven, A. M. Rocha"baseAuthorityName="Jacq."box="[326,925,1756,1783]"class="Magnoliopsida"family="Onagraceae"genus="Ludwigia"kingdom="Plantae"order="Myrtales"pageId="18"pageNumber="19"phylum="Tracheophyta"rank="species"species="octovalvis">
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, with entire margin, membranous, lanceolate-linear to oblonglanceolate, with acute apex and obtuse base, subglabrous to pubescent. Flowers tetramerous, sessile; bracteoles 2, near the base of hypanthium, less than
long, stigma globose to ovoid; stamens 8, anthers globose; convex nectariferous disk with depressed nectaries, glabrous to densely pilose, surrounding the base of each epipetalous stamens. Capsule 3.5–57 ×
is widely distributed in tropical regions, although it is mainly found in the Americas (
<bibRefCitationid="5C4B4B7DD156FF88B5D3FACA6F48FACE"author="Raven P. H."box="[197,341,1308,1335]"firstAuthor="Raven"journalOrPublisher="Reinwardtia"pageId="19"pageNumber="20"pagination="327 - 427"part="6"refId="ref12167"refString="Raven P. H. 1963. The Old World Species of Ludwigia (including Jussiaea), with a Synopsis of the Genus (Onagraceae). Reinwardtia 6: 327 - 427."title="The Old World Species of Ludwigia (including Jussiaea), with a Synopsis of the Genus (Onagraceae)"type="journal article"year="1963">Raven 1963</bibRefCitation>
;
<bibRefCitationid="5C4B4B7DD156FF88B476FACB6C72FACF"author="Grillo A. A. S. & Giulietti A. M."box="[352,623,1308,1335]"firstAuthor="Grillo"journalOrPublisher="Boletim de Botanica da Universidade de Sao Paulo"pageId="19"pageNumber="20"pagination="355 - 358"part="22"refId="ref11393"refString="Grillo A. A. S. & Giulietti A. M. 2004. Flora de Grao-Mogol, Minas Gerais: Onagraceae. Boletim de Botanica da Universidade de Sao Paulo 22: 355 - 358. https: // doi. org / 10.11606 / issn. 2316 - 9052. v 22 i 2 p 355 - 358"title="Flora de Grao-Mogol, Minas Gerais: Onagraceae"type="journal article"year="2004">Grillo & Giulietti 2004</bibRefCitation>
, associated with banks of dams and humid or prone to flooding sites. Flowers may be harvested throughout the year and fruits are collected in March, May, June and December.
, within the limit for Endangered status under the criterion B2. However, due to its EOO greater than 40 000 km², it does not fall within the threatened category. It is currently placed on the Near Threatened (NT) list.
<paragraphid="3865368CD156FF88B5ABF87A6B6BF813"blockId="19.[189,1399,1965,2027]"pageId="19"pageNumber="20">This species is mainly differentiated from other representatives of the genus in the study area by its seeds with inflated raphe with diameter equal to or greater than the body of the seed, a typical feature of</paragraph>
<taxonomicNameid="FFDA4D0FD151FF8FB5ABFEDC6D32FEDE"authority="(Zardini & Raven 1992)"baseAuthorityName="Zardini & Raven"baseAuthorityYear="1992"box="[189,815,267,294]"class="Magnoliopsida"family="Onagraceae"genus="Ludwigia"kingdom="Plantae"order="Myrtales"pageId="20"pageNumber="21"phylum="Tracheophyta"rank="section"section="Macrocarpon">
<bibRefCitationid="5C4B4B7DD151FF8FB70DFEDC6D3BFEDE"author="Zardini E. M. & Raven P. H."box="[539,806,267,294]"firstAuthor="Zardini"journalOrPublisher="Systematic Botany"pageId="20"pageNumber="21"pagination="481 - 485"part="17"refId="ref12493"refString="Zardini E. M. & Raven P. H. 1992. A new section of Ludwigia (Onagraceae) with a key to the sections of the genus. Systematic Botany 17: 481 - 485. https: // doi. org / 10.2307 / 2419486"title="A new section of Ludwigia (Onagraceae) with a key to the sections of the genus"type="journal article"year="1992">Zardini & Raven 1992</bibRefCitation>
)
</taxonomicName>
. Furthermore, it has petals with emarginated apex, 8-ribbed capsules, and pluriseriate seeds in the locule and not embedded in the endocarp.
<bibRefCitationid="5C4B4B7DD151FF8FB44CFEA06FE6FE6A"author="Raven P. H."box="[346,507,375,402]"firstAuthor="Raven"journalOrPublisher="Reinwardtia"pageId="20"pageNumber="21"pagination="327 - 427"part="6"refId="ref12167"refString="Raven P. H. 1963. The Old World Species of Ludwigia (including Jussiaea), with a Synopsis of the Genus (Onagraceae). Reinwardtia 6: 327 - 427."title="The Old World Species of Ludwigia (including Jussiaea), with a Synopsis of the Genus (Onagraceae)"type="journal article"year="1963">Raven (1963)</bibRefCitation>
, the species has a complex morphological variation. Specimens may be found varying in size, shape of leaf blades, density of branch and leaf indumentum, and in petal and fruit length (
<bibRefCitationid="5C4B4B7DD151FF8FB5D3FE136FFBFE26"author="Duarte M. C. & Esteves G. L."box="[197,486,452,478]"editor="Melo M. M. R. F. & Barros F. & Chiea S. A. C. & Kirizawa M. & Jung-Mendacolli S. L. & Wanderley M. G. L."firstAuthor="Duarte"journalOrPublisher="Instituto de Botanica, Sao Paulo"pageId="20"pageNumber="21"pagination="27 - 30"refId="ref11009"refString="Duarte M. C. & Esteves G. L. 2001. Onagraceae. In: Melo M. M. R. F., Barros F., Chiea S. A. C., Kirizawa M., Jung-Mendacolli S. L. & Wanderley M. G. L. (eds) Flora Fanerogamica da Ilha do Cardoso: 27 - 30. Instituto de Botanica, Sao Paulo."title="Onagraceae"type="book chapter"volumeTitle="Flora Fanerogamica da Ilha do Cardoso"year="2001">Duarte & Esteves 2001</bibRefCitation>
). Precisely for this reason,
<bibRefCitationid="5C4B4B7DD151FF8FB625FE136DCAFE26"author="Raven P. H."box="[819,983,451,478]"firstAuthor="Raven"journalOrPublisher="Reinwardtia"pageId="20"pageNumber="21"pagination="327 - 427"part="6"refId="ref12167"refString="Raven P. H. 1963. The Old World Species of Ludwigia (including Jussiaea), with a Synopsis of the Genus (Onagraceae). Reinwardtia 6: 327 - 427."title="The Old World Species of Ludwigia (including Jussiaea), with a Synopsis of the Genus (Onagraceae)"type="journal article"year="1963">Raven (1963)</bibRefCitation>
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<taxonomicNameid="FFDA4D0FD151FF8FB12DFE3D6DBCFDD3"authority="(Micheli) P. H. Raven. However, Raven & Tai (1977)"authorityName="P. H. Raven. However, Raven & Tai"authorityYear="1977"baseAuthorityName="Micheli"class="Magnoliopsida"family="Onagraceae"genus="Ludwigia"kingdom="Plantae"order="Myrtales"pageId="20"pageNumber="21"phylum="Tracheophyta"rank="subSpecies"species="octovalvis"subSpecies="sessiliflora">
<bibRefCitationid="5C4B4B7DD151FF8FB7AFFDC66DBCFDD3"author="Raven P. H. & Tai W."box="[697,929,528,555]"firstAuthor="Raven"journalOrPublisher="Annals of the Missouri Botanical Garden"pageId="20"pageNumber="21"pagination="862 - 879"part="66"refId="ref12125"refString="Raven P. H. & Tai W. 1977. Observations of chromosomes in Ludwigia (Onagraceae). Annals of the Missouri Botanical Garden 66: 862 - 879. https: // doi. org / 10.2307 / 2398926"title="Observations of chromosomes in Ludwigia (Onagraceae)"type="journal article"year="1977">Raven & Tai (1977)</bibRefCitation>
</taxonomicName>
recognize only as a single species, since specimens of the two subspecies may be found on the same site. Thus, it is usual to find both populations with typical individuals and populations with individuals intermediate in morphological characteristics between the two subspecies. Differences are maintained by autogamy (
<bibRefCitationid="5C4B4B7DD151FF8FB6EDFD536AC5FD66"author="Raven P. H. & Tai W."box="[1019,1240,644,670]"firstAuthor="Raven"journalOrPublisher="Annals of the Missouri Botanical Garden"pageId="20"pageNumber="21"pagination="862 - 879"part="66"refId="ref12125"refString="Raven P. H. & Tai W. 1977. Observations of chromosomes in Ludwigia (Onagraceae). Annals of the Missouri Botanical Garden 66: 862 - 879. https: // doi. org / 10.2307 / 2398926"title="Observations of chromosomes in Ludwigia (Onagraceae)"type="journal article"year="1977">Raven & Tai 1977</bibRefCitation>
). In the study area, morphologically variable individuals were found. In this paper, the two distinct populations are treated as a single species, as suggested by
<bibRefCitationid="5C4B4B7DD151FF8FB7AFFD066DBAFD13"author="Raven P. H. & Tai W."box="[697,935,721,747]"firstAuthor="Raven"journalOrPublisher="Annals of the Missouri Botanical Garden"pageId="20"pageNumber="21"pagination="862 - 879"part="66"refId="ref12125"refString="Raven P. H. & Tai W. 1977. Observations of chromosomes in Ludwigia (Onagraceae). Annals of the Missouri Botanical Garden 66: 862 - 879. https: // doi. org / 10.2307 / 2398926"title="Observations of chromosomes in Ludwigia (Onagraceae)"type="journal article"year="1977">Raven & Tai (1977)</bibRefCitation>