339 lines
30 KiB
XML
339 lines
30 KiB
XML
<document id="F4597B6FA193D095F8B51BE2C679457B" ID-DOI="10.5091/plecevo.117163" ID-publisher-id="117163" URI-arpha="15C5BB62-A40E-58B1-B11A-5A1FE5BC464E" article-type="research-article" checkinTime="1721319839294" checkinUser="pensoft" docAuthor="Thomas, William Wayt, Silva Filho, Pedro Joel Silva da & Reginato, Marcelo" docDate="2024" docId="B47D923D5A745DD6BFABD566B0F8B0D7" docLanguage="en" docName="Plant Ecology and Evolution 157(3): 257-269" docOrigin="Plant Ecology and Evolution 157 (3)" docSource="https://plecevo.eu/article/117163/download/xml/" docStyle="DocumentStyle:PensoftTaxPub.0000.journal_article.generic" docStyleName="PensoftTaxPub.0000.journal_article.generic" docTitle="Rhynchospora eremica W. W. Thomas 2024, sp. nov." docType="treatment" docVersion="2" dtd-version="3.0" lastPageNumber="269" masterDocId="15C5BB62A40E58B1B11A5A1FE5BC464E" masterDocTitle="Rhynchospora section Pleurostachys (Cyperaceae): a phylogeny and three new species from the dry forests of Bahia and Espírito Santo, Brazil" masterLastPageNumber="269" masterPageNumber="257" pageNumber="257" updateTime="1721320232541" updateUser="ExternalLinkService">
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<mods:title id="1C5595E8696C356E83CE7487CCD63681">Rhynchospora section Pleurostachys (Cyperaceae): a phylogeny and three new species from the dry forests of Bahia and Espírito Santo, Brazil</mods:title>
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<mods:namePart id="B30E8CE2558E45AA8391284CFC8F0993">Thomas, William Wayt</mods:namePart>
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<mods:affiliation id="E80D423F6E5DE2CEF601A37685DC0DD7">New York Botanical Garden, Bronx, New York, USA</mods:affiliation>
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<mods:namePart id="F735E8D696D89FB36295BEC7FB3020EB">Silva Filho, Pedro Joel Silva da</mods:namePart>
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<mods:affiliation id="961C98ADA59CF141406EB7D45EFCA049">Departamento de Biologia, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil</mods:affiliation>
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<mods:namePart id="83D40419E5587FA3C8B2BE7E41F114DA">Reginato, Marcelo</mods:namePart>
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<mods:affiliation id="A8DDB6E16168F5D648AE898E65E546C7">Departamento de Botânica, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil</mods:affiliation>
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<mods:date id="F7D6FAC1B33E87FA3B83CD9A893B6653">2024</mods:date>
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<mods:number id="8859C707F2888B6F98F92B3321AE94A1">2024-07-18</mods:number>
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<treatment id="B47D923D5A745DD6BFABD566B0F8B0D7" ID-DOI="http://doi.org/10.5281/zenodo.12774046" ID-Zenodo-Dep="12774046" ID-arpha="B47D923D-5A74-5DD6-BFAB-D566B0F8B0D7" ID-ipni="urn:lsid:ipni.org:names:77345044-1" LSID="urn:lsid:plazi:treatment:B47D923D5A745DD6BFABD566B0F8B0D7" LSID-IPNI="urn:lsid:ipni.org:names:77345044-1" httpUri="http://treatment.plazi.org/id/B47D923D5A745DD6BFABD566B0F8B0D7">
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<subSubSection id="86C90DB6622D6E31C49672D49AE46104" type="nomenclature">
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<paragraph id="AE80549B4CFEB82E9F4D70A7543B154C">
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<taxonomicName id="95AC29E98210A4F06F3868B9F56F1F6A" authority="W. W. Thomas" authorityName="W. W. Thomas" authorityYear="2024" class="Liliopsida" family="Cyperaceae" genus="Rhynchospora" kingdom="Animalia" order="Poales" phylum="Tracheophyta" rank="species" species="eremica" status="sp. nov.">
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<emphasis id="04F14E1CF8BCACDB9AE1F9DB79DEBD92" italics="true">Rhynchospora eremica</emphasis>
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W. W. Thomas
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</taxonomicName>
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<taxonomicNameLabel id="E626E45707DDDFB2FA0FAC5D527AEE01" rank="species">sp. nov.</taxonomicNameLabel>
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</paragraph>
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</subSubSection>
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<subSubSection id="1EC1E47A659BBA9C243AAAA9B1E04899" type="description">
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<paragraph id="6FF9D9E0E2EBE8FB1AF9CF3E0E2D4A7A">
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<figureCitation id="9B76E5851383E379784D4257165D8432" captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Nutlet photographs. A. Rhynchospora barbosae. B. R. hamadryadis. C. R. eremica. A from W. W. Thomas et al. 16619 (isotype, NY); B from W. W. Thomas et al. 13954 (isotype, NY); C from W. W. Thomas et al. 13748 (isotype, NY). Scale bars = 0.5 mm." figureDoi="10.5091/plecevo.117163.figure4" httpUri="https://binary.pensoft.net/fig/1095140">Figs 4 C</figureCitation>
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,
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<figureCitation id="1EF1C8A19416CDE9639FE787C84BE11E" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Distribution map of Rhynchospora barbosae (black circles), R. hamadryadis (grey squares), and R. eremica (white triangle)." figureDoi="10.5091/plecevo.117163.figure5" httpUri="https://binary.pensoft.net/fig/1095141">5</figureCitation>
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,
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<figureCitation id="820251CA05ABED231AAD9DAF5BB05694" captionStart="Figure 7" captionStartId="F7" captionText="Figure 7. Rhynchospora eremica. A. Plant habit. B. Synflorescence in fruit and detail of contraligule. C. Detail of one synflorescence. D. Spikelet. E. Spikelet with mature nutlet. F. Spikelet scale, developing nutlet with bristles and filaments, bristle detail and developing nutlet with style base and 2 stigmas. G. Nutlet, face view and side view. A – G from W. W. Thomas et al. 13748 (isotype, NY). Drawn by Bobbi Angell." figureDoi="10.5091/plecevo.117163.figure7" httpUri="https://binary.pensoft.net/fig/1095143">7</figureCitation>
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</paragraph>
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<subSubSection id="SECID0EWSAG" type="material">
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<paragraph id="92BD6D1B09650F8E17B356657C5CBE36">
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<heading id="5F8E3E865C01F56A7311185E53144255" reason="title">
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<typeStatus id="E9E974F1EA045A59421A0F8144DB4D0E">Type</typeStatus>
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.
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</heading>
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</paragraph>
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<paragraph id="3A80D68BA3CDDDA18DBBAD4D1328E75C">
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<materialsCitation id="B7EF6DD546EC1CF4588E514E92F9DA9C" collectingDate="2004-01-31" collectionCode="S, E, W, A, M, P, J, L, CEPEC, K, MO, NY, RB" country="Brazil" county="Salto da Divisa" elevation="495" latitude="-16.02861" location="Salto da Divisa" longLatPrecision="21" longitude="-39.92139" municipality="Estacao Repetidora de Salto da Divisa" specimenCount="2" stateProvince="Minas Gerais" typeStatus="holotype">
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<collectingCountry id="9F815E90A895E43A6A1E89166B3BDB8A" name="Brazil">BRAZIL</collectingCountry>
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–
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<collectingRegion id="52D5B1E88A3BABA6E74D9429C881C23B" country="Brazil" name="Minas Gerais">Minas Gerais</collectingRegion>
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</emphasis>
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•
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<collectingCounty id="F6B72B3F8792BA38CAC44408EB2F7845">Salto da Divisa</collectingCounty>
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[on both sides of the state line separating
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<collectingRegion id="D9DEAD1CD5DEE1D035FAC45710A01CA6" country="Brazil" name="Bahia">Bahia</collectingRegion>
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: Itajimirim].
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<collectingMunicipality id="B9A8D9AA5D253BEC652E52FCCD5EE319">Estação Repetidora de Salto da Divisa</collectingMunicipality>
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[Serra do Bogodo],
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<quantity id="CE459C31DDCCAF823C4315D18BC892AD" metricMagnitude="3" metricUnit="m" metricValue="1.9" unit="km" value="1.9">1.9 km</quantity>
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<collectionCode id="B79920157954538AE776E19BDCB2526A" country="Sweden" lsid="urn:lsid:biocol.org:col:15668" name="Department of Botany, Swedish Museum of Natural History" type="Herbarium">S</collectionCode>
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of road from
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<location id="23786B70851671239D168157881C91B9" LSID="urn:lsid:plazi:treatment:B47D923D5A745DD6BFABD566B0F8B0D7:23786B70851671239D168157881C91B9" country="Brazil" county="Salto da Divisa" latitude="-16.02861" longLatPrecision="21" longitude="-39.92139" municipality="Estacao Repetidora de Salto da Divisa" name="Salto da Divisa" stateProvince="Minas Gerais">Salto da Divisa</location>
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to
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<location id="DC07E3C3DAF2176EDFB2E59EDB7AA5FE" LSID="urn:lsid:plazi:treatment:B47D923D5A745DD6BFABD566B0F8B0D7:DC07E3C3DAF2176EDFB2E59EDB7AA5FE" country="Brazil" county="Salto da Divisa" latitude="-16.02861" longLatPrecision="21" longitude="-39.92139" municipality="Estacao Repetidora de Salto da Divisa" name="Itajimirim" stateProvince="Minas Gerais">Itajimirim</location>
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,
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<quantity id="ECF6B3D0D6378AE36A1F86BD73FC28D4" metricMagnitude="3" metricUnit="m" metricValue="7.1" unit="km" value="7.1">7.1 km</quantity>
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<collectionCode id="52D5E8737AD1FE7C56DC40BD9F17FE22" country="United Kingdom" lsid="urn:lsid:biocol.org:col:15670" name="Royal Botanic Garden Edinburgh" type="Herbarium">E</collectionCode>
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of
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<location id="9F59BF5E7629E997C8FC17B5DEADA765" LSID="urn:lsid:plazi:treatment:B47D923D5A745DD6BFABD566B0F8B0D7:9F59BF5E7629E997C8FC17B5DEADA765" country="Brazil" county="Salto da Divisa" latitude="-16.02861" longLatPrecision="21" longitude="-39.92139" municipality="Estacao Repetidora de Salto da Divisa" name="Salto da Divisa" stateProvince="Minas Gerais">Salto da Divisa</location>
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;
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<geoCoordinate id="DA3B36B676A089EE1804E7AA414C2DE2" degrees="16" direction="south" minutes="01" orientation="latitude" precision="15" seconds="43" value="-16.02861">16 ° 01 ’ 43 ” S</geoCoordinate>
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,
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<geoCoordinate id="E1FF70DE4496040F9DF20AD1E4078734" degrees="39" direction="west" minutes="55" orientation="longitude" precision="15" seconds="17" value="-39.92139">39 ° 55 ’ 17 ” W</geoCoordinate>
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;
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<quantity id="7ED5243752E190248D213503A2F45E55" metricMagnitude="2" metricUnit="m" metricValue="4.95" unit="m" value="495.0">
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<elevation id="0A80BF6FC2AB66A0447D47292AD0A4A7" metricMagnitude="2" metricUnit="m" metricValue="4.95" unit="m" value="495.0">495 m</elevation>
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</quantity>
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;
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<date id="8C7E1FE4EA5DDB2CAD9027C8A2C17B02" value="2004-01-31">
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<collectingDate id="63AE23438E0087296D75AC262BFF5ADF" value="2004-01-31">31 Jan. 2004</collectingDate>
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</date>
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;
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<emphasis id="B3304A04297739A1C0437A771316BF54" italics="true">
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<collectionCode id="E5C2CE83467F35EEF2F6C843F80C6680" country="Austria" lsid="urn:lsid:biocol.org:col:15588" name="Naturhistorisches Museum Wien" type="Herbarium">W</collectionCode>
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.
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<collectionCode id="C549311899C2DBBA6D5447FC4939DBD1" country="Austria" lsid="urn:lsid:biocol.org:col:15588" name="Naturhistorisches Museum Wien" type="Herbarium">W</collectionCode>
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. Thomas,
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<collectionCode id="14D5B726AC4E2BF7C325071C7B63EBD6" country="USA" lsid="urn:lsid:biocol.org:col:15406" name="Harvard University - Arnold Arboretum" type="Herbarium">A</collectionCode>
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.
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<collectionCode id="28D106BD86D91688E2D34EE5430568B1" country="Germany" lsid="urn:lsid:biocol.org:col:15637" name="Botanische Staatssammlung München" type="Herbarium">M</collectionCode>
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. Amorim,
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<collectionCode id="875373362A47036D60E6C089DD7B75A4" country="France" lsid="urn:lsid:biocol.org:col:15763" name="Museum National d' Histoire Naturelle, Paris (MNHN) - Vascular Plants" type="Herbarium">P</collectionCode>
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. Fiaschi,
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<collectionCode id="D0E399124329ED81D061F5D8E0F52E6C" country="South Africa" lsid="urn:lsid:biocol.org:col:14647" name="University of the Witwatersrand" type="Herbarium">J</collectionCode>
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.
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<collectionCode id="EEBAEC091F1D725E90B4CE195A624C78" country="Netherlands" lsid="urn:lsid:biocol.org:col:15678" name="Nationaal Herbarium Nederland, Leiden University branch" type="Herbarium">L</collectionCode>
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. Paixão &
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<collectionCode id="0A2DEBF56583510A7D432F065CFCE174" country="Sweden" lsid="urn:lsid:biocol.org:col:15668" name="Department of Botany, Swedish Museum of Natural History" type="Herbarium">S</collectionCode>
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. Sant’Ana 13748
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</emphasis>
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;
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<typeStatus id="EAA3B1526BC2735BD910018B03ABE5CC" type="holotype">holotype</typeStatus>
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:
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<collectionCode id="A7B54BA8140C3DEAFDE26AC9E9DF1CF4" country="Brazil" httpUri="http://biocol.org/urn:lsid:biocol.org:col:15526" lsid="urn:lsid:biocol.org:col:15526" name="CEPEC, CEPLAC" type="Herbarium">CEPEC</collectionCode>
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[102274];
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<typeStatus id="50F92C19B5686B7D00DD4889E77A181B" type="isotype">isotypes</typeStatus>
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:
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<collectionCode id="5CFAD0B52F1FCD44A31214526F7D0007" country="United Kingdom" lsid="urn:lsid:biocol.org:col:15867" name="Royal Botanic Gardens" type="Herbarium">K</collectionCode>
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,
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<collectionCode id="741E0AB6492EACCFFC18B28ADB7A1497" country="USA" lsid="urn:lsid:biocol.org:col:15859" name="Missouri Botanical Garden" type="Herbarium">MO</collectionCode>
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,
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<collectionCode id="D64DA6B5ED98F8145F0A0DA3D8CDCD91" country="USA" lsid="urn:lsid:biocol.org:col:15556" name="William and Lynda Steere Herbarium of the New York Botanical Garden" type="Herbarium">NY</collectionCode>
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,
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<collectionCode id="AB80AB81024EADFC9959BE5ADFF0CA9B" country="Brazil" lsid="urn:lsid:biocol.org:col:15528" name="Jardim Botânico do Rio de Janeiro" type="Herbarium">RB</collectionCode>
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[686968],
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<collectionCode id="C9F1AF0D7250A2E1BCE28D165AFA6290" country="Brazil" lsid="urn:lsid:biocol.org:col:15528" name="Jardim Botânico do Rio de Janeiro" type="Herbarium">RB</collectionCode>
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[696646]
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</materialsCitation>
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.
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</paragraph>
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<caption id="7AF7CC5D92514C2844B2BF5947564E0D" ID-DOI="10.5091/plecevo.117163.figure7" ID-arpha="3292A86E-E157-5A9E-B08E-CE7867EEEDF7" httpUri="https://binary.pensoft.net/fig/1095143" startId="F7">
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<paragraph id="885CF6A87DFA8E15D85B78E67D65491D">
|
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<label id="7DE23D16E9E88B5C1877AC5A50395EF0">Figure 7.</label>
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</paragraph>
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<paragraph id="8DBCB4D16D5E948B69ECE9490D0E5D73">
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<taxonomicName id="6A5CEA5B2DA5D7667EB33FEE079E0721" authorityName="W. W. Thomas" authorityYear="2024" class="Liliopsida" family="Cyperaceae" genus="Rhynchospora" kingdom="Plantae" order="Poales" phylum="Tracheophyta" rank="species" species="eremica">
|
||
<emphasis id="51DD31EDD5C01D2CCAB6A38A1190AB85" italics="true">Rhynchospora eremica</emphasis>
|
||
</taxonomicName>
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||
.
|
||
<emphasis id="D8CECD12D85F27A974248C53B5BE9102" bold="true">A</emphasis>
|
||
. Plant habit.
|
||
<emphasis id="51CC964619C82D6542492AB6605631AD" bold="true">B</emphasis>
|
||
. Synflorescence in fruit and detail of contraligule.
|
||
<emphasis id="856CDA33EB0A74B62B450CEA855C5146" bold="true">C</emphasis>
|
||
. Detail of one synflorescence.
|
||
<emphasis id="74D71543922B4DB342350709A1ACA6F6" bold="true">D</emphasis>
|
||
. Spikelet.
|
||
<emphasis id="420BBCAAD7B4A04F0828AAA442CA3799" bold="true">E</emphasis>
|
||
. Spikelet with mature nutlet.
|
||
<emphasis id="078E3881739C963443CC87EAB89546D3" bold="true">F</emphasis>
|
||
. Spikelet scale, developing nutlet with bristles and filaments, bristle detail and developing nutlet with style base and 2 stigmas.
|
||
<emphasis id="46E1F6B509715A10FAEFBD39BC1D2973" bold="true">G</emphasis>
|
||
. Nutlet, face view and side view. A – G from
|
||
<emphasis id="3EBEF0F7A504F0ED1F32E0F1682935FF" italics="true">W. W. Thomas et al. 13748</emphasis>
|
||
(isotype, NY). Drawn by Bobbi Angell.
|
||
</paragraph>
|
||
</caption>
|
||
</subSubSection>
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<subSubSection id="SECID0EQUAG" type="diagnosis">
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<paragraph id="E3C5DC7771CC5AEB4D7B1EC9CDF7089E">
|
||
<heading id="14E72D565BEBC51F4A6B3B1F8D0B438F" reason="title">Diagnosis.</heading>
|
||
</paragraph>
|
||
<paragraph id="417489FC303FBC55C206577B640071DA">
|
||
<taxonomicName id="3D297BE72261C6D51DEAF090B68BEBAE" authorityName="W. W. Thomas" authorityYear="2024" class="Liliopsida" family="Cyperaceae" genus="Rhynchospora" kingdom="Plantae" order="Poales" phylum="Tracheophyta" rank="species" species="eremica">
|
||
<emphasis id="4F8653D30C358AEEF9EFB71BFD50E1BB" italics="true">Rhynchospora eremica</emphasis>
|
||
</taxonomicName>
|
||
is one of the smallest species in sect.
|
||
<taxonomicName id="1D941B62316EBEDD0AD7EF371A9D0AB9" class="Liliopsida" family="Cyperaceae" genus="Pleurostachys" kingdom="Plantae" order="Poales" phylum="Tracheophyta" rank="genus">
|
||
<emphasis id="466BD86987409D6340749048C5FAA16C" italics="true">Pleurostachys</emphasis>
|
||
</taxonomicName>
|
||
with culms no more that
|
||
<quantity id="88BA803B1F2E4F62FAB61693ACC68282" metricMagnitude="-1" metricUnit="m" metricValue="3.0" unit="cm" value="30.0">30 cm</quantity>
|
||
long and leaves mostly under
|
||
<quantity id="170ED7929C45A16956553006C6BD2080" metricMagnitude="-1" metricUnit="m" metricValue="2.0" unit="cm" value="20.0">20 cm</quantity>
|
||
long. Its short, broad leaves are unique among those species with basal leaves.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="SECID0EKVAG" type="description">
|
||
<paragraph id="57FE663BFA6690A5B5F395220BA2731F">
|
||
<heading id="B016441D480D68923EC4B9B8F106F69D" reason="title">Description.</heading>
|
||
</paragraph>
|
||
<paragraph id="3B4448147DC75BE1BB6898C340B7D0A6">
|
||
<underline id="44F88328939C7FF14B4C5CD5077A1B6D">Plants</underline>
|
||
glabrous, rhizomatous, the rhizomes congested,
|
||
<quantity id="3C7A2626FC5FCAF7CD63C9F74AA806D2" metricMagnitude="-3" metricUnit="m" metricValue="2.0" unit="mm" value="2.0">2 mm</quantity>
|
||
in diameter, the internodes
|
||
<quantity id="ADE64887D2937468FFB765307E26635E" metricMagnitude="-3" metricUnit="m" metricValue="7.5" metricValueMax="10.0" metricValueMin="5.0" unit="cm" value="0.75" valueMax="1.0" valueMin="0.5">0.5–1 cm</quantity>
|
||
.
|
||
<underline id="E995507DF4708DE4102DE0B75D360EE4">Culms</underline>
|
||
arching,
|
||
<quantity id="5EF8234E81FF696B454DD267672F14E6" metricMagnitude="-1" metricUnit="m" metricValue="2.6" metricValueMax="3.0" metricValueMin="2.2" unit="cm" value="26.0" valueMax="30.0" valueMin="22.0">22–30 cm</quantity>
|
||
long,
|
||
<quantity id="9BC1B7435B20C74409066E39136321AA" metricMagnitude="-3" metricUnit="m" metricValue="1.0" unit="mm" value="1.0">1 mm</quantity>
|
||
wide.
|
||
<underline id="B56F777B3DB21F9878D2A5FB30D1F8D2">Leaves</underline>
|
||
basal 3–5, linear, the sheaths not seen, the blades 12–21 (– 45) ×
|
||
<quantity id="CF6A776696C2211CC97E8B2CAB23997C" metricMagnitude="-3" metricUnit="m" metricValue="8.5" metricValueMax="12.0" metricValueMin="5.0" unit="cm" value="0.85" valueMax="1.2" valueMin="0.5">0.5–1.2 cm</quantity>
|
||
, glaucous green above and below, flattened, midrib evident.
|
||
<underline id="1FE129093AE34DD0FFFF1715847FD5BB">Synflorescence</underline>
|
||
a series of 3–6 corymbose inflorescences, each subtended by a leaf-like bract, the bracts at each more distal node diminishing in size; basal bract with sheath
|
||
<quantity id="D689F43804B3E876C0B3F3F245B91C04" metricMagnitude="-2" metricUnit="m" metricValue="1.6" metricValueMax="2.2" metricValueMin="1.0" unit="mm" value="16.0" valueMax="22.0" valueMin="10.0">10–22 mm</quantity>
|
||
long, the blade linear, 6–14 ×
|
||
<quantity id="C99F00DB4FAFC0243C804FCF08A486E5" metricMagnitude="-3" metricUnit="m" metricValue="4.5" metricValueMax="7.0" metricValueMin="2.0" unit="cm" value="0.44999999999999996" valueMax="0.7" valueMin="0.2">0.2–0.7 cm</quantity>
|
||
; inflorescences increasing in size and number of spikelets distally, each one of 3–9 spikelets, the primary axis 30–70 ×
|
||
<quantity id="BB195A716E32E15971DB6E59A87E2830" metricMagnitude="-4" metricUnit="m" metricValue="2.0" unit="mm" value="0.2">0.2 mm</quantity>
|
||
, the basal branches longest, 10–26 ×
|
||
<quantity id="A601072A8332DE0D568ED68A36989A07" metricMagnitude="-4" metricUnit="m" metricValue="1.5" metricValueMax="2.0" metricValueMin="1.0" unit="mm" value="0.15" valueMax="0.2" valueMin="0.1">0.1–0.2 mm</quantity>
|
||
, with 2–3 spikelets, the shorter distal branches forming a terminal cluster of 2–4 spikelets.
|
||
<underline id="7AE2107E753CBA90549E24B0E490080A">Mature spikelets</underline>
|
||
dark brown, (measurements for those without maturing achenes distorting shape) lenticular, ellipsoid, 4–6.4 ×
|
||
<quantity id="7C6EF39918010586F6DB5C7D7A279BBC" metricMagnitude="-3" metricUnit="m" metricValue="2.15" metricValueMax="2.5" metricValueMin="1.8" unit="mm" value="2.15" valueMax="2.5" valueMin="1.8">1.8–2.5 mm</quantity>
|
||
, comprising 20–30 glumes, the basal 3 glumes smaller, sterile, the fertile glumes ca. 2.6 ×
|
||
<quantity id="3F7E066A1B9CBE9481EBA219FE97519F" metricMagnitude="-3" metricUnit="m" metricValue="1.5" unit="mm" value="1.5">1.5 mm</quantity>
|
||
, more or less distichous, carinate, cucullate, the apex acute, mucronate.
|
||
<underline id="779108007FF71BE1CBBA4003713E3D19">Hypogynous bristles</underline>
|
||
0.6–2.0 mm long, half as long as to slightly exceeding the achene, densely short-plumose on the distal two thirds, sparsely so on the basal third.
|
||
<underline id="B5F2F5F8A2FDD1F84EF47DE8B8D57F07">Nutlet</underline>
|
||
circular to very broadly obovate in outline, deeply lenticular, 1.6–1.8 ×
|
||
<quantity id="171446F78992133318BDCD9820BD0958" metricMagnitude="-3" metricUnit="m" metricValue="1.5499999999999998" metricValueMax="1.7" metricValueMin="1.4" unit="mm" value="1.5499999999999998" valueMax="1.7" valueMin="1.4">1.4–1.7 mm</quantity>
|
||
, the surface golden tan and very lightly rugulose to tuberculate, the summit slightly arched; persistent style base triangular, 0.4–0.5 ×
|
||
<quantity id="4F1F949C61778EA17F8AEFD7CE4ACF27" metricMagnitude="-4" metricUnit="m" metricValue="6.5" metricValueMax="8.0" metricValueMin="5.0" unit="mm" value="0.65" valueMax="0.8" valueMin="0.5">0.5–0.8 mm</quantity>
|
||
, the surface dull grey and irregularly textured.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="SECID0E5VAG" type="distribution">
|
||
<paragraph id="8FF2B71208D17A31A41D7B30AB802412">
|
||
<heading id="F0ACE5B4BCAAE7938344254D4540E43D" reason="title">Distribution and habitat.</heading>
|
||
</paragraph>
|
||
<paragraph id="FA6B878985372518877FD65986C4C193">
|
||
Known from a single collection on the Serra do Bogodó, a
|
||
<quantity id="4792BD4F4BE779BEC134B720EA0F1A2F" metricMagnitude="2" metricUnit="m" metricValue="4.9" unit="m" value="490.0">490 m</quantity>
|
||
high hill with low, open deciduous seasonal tropical forest (
|
||
<bibRefCitation id="B7E2AB706842FC6DE6389253C383D5DB" author="Thomas and Barbosa" editor="Thomas WW" firstAuthor="Thomas" journalOrPublisher="Memoirs of the New York Botanical Garden" pagination="6-20" refId="B34" refString="Thomas WW, Barbosa MRV (2008) Natural vegetation types in the Brazilian Atlantic coastal forest north of the Rio Doce. In: Thomas WW (Ed.) The Atlantic Coastal Forest of Northeastern Brazil. Memoirs of the New York Botanical Garden 100: 6–20." title="Natural vegetation types in the Brazilian Atlantic coastal forest north of the Rio Doce." volume="100" volumeTitle="The Atlantic Coastal Forest of Northeastern Brazil." year="2008">Thomas and Barbosa 2008</bibRefCitation>
|
||
) surrounded by lower, ca
|
||
<quantity id="A90FE5838C08154B4F545EA2EC7F4BE1" metricMagnitude="2" metricUnit="m" metricValue="2.0" unit="m" value="200.0">200 m</quantity>
|
||
elevation, flat, deforested land converted into pasture (Fig.
|
||
<figureCitation id="56472E94A725AA71EE49028D268052C9" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Distribution map of Rhynchospora barbosae (black circles), R. hamadryadis (grey squares), and R. eremica (white triangle)." figureDoi="10.5091/plecevo.117163.figure5" httpUri="https://binary.pensoft.net/fig/1095141">5</figureCitation>
|
||
). The Serra is on the state line separating the municipalities of Salto da Divisa in
|
||
<collectingRegion id="7FCA07420DCE1E44EB4B2BBB923BD90F" country="Brazil" name="Minas Gerais">Minas Gerais</collectingRegion>
|
||
and Itajimirim in
|
||
<collectingRegion id="9368238055AADE24F1461EAFC6E2658B" country="Brazil" name="Bahia">Bahia</collectingRegion>
|
||
.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="SECID0EMWAG" type="etymology">
|
||
<paragraph id="7513FDECD7ADA8CC7D0F6B7618A64983">
|
||
<heading id="CCA185A1430005EC2F84D480C3F01249" reason="title">Etymology.</heading>
|
||
</paragraph>
|
||
<paragraph id="27478154E3036BC93A5F89388BEDA94F">
|
||
The specific epithet comes from the Greek “ eremos ” meaning solitary and often is used in specific epithets to describe desert environments. Here, it describes the dry forest habitat, and that this species is known only from the
|
||
<typeStatus id="BF53F5B661E121FDBB3AA96BFDCB71A7">type</typeStatus>
|
||
collection.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="SECID0ERWAG" type="Preliminary IUCN conservation assessment">
|
||
<paragraph id="6A7343313BCC72B6C09D978456F6C42B">
|
||
<heading id="F9F0AAB89ECFAF103446E8B565C466F1" reason="title">
|
||
Preliminary
|
||
<collectionCode id="48FFDBABD4E7ADD0DFA314998FF7D0F9">IUCN</collectionCode>
|
||
conservation assessment.
|
||
</heading>
|
||
</paragraph>
|
||
<paragraph id="F92D20D31C8890B516DA3F092983B4E7">
|
||
Two subsequent trips to the only known locality revealed no additional plants. Since the original collection, cattle were permitted to enter and graze, probably affecting the diversity of plants in the herbaceous layer of the forest.
|
||
<taxonomicName id="B1545F5888DEE3183B98F98FC5E6E05A" authorityName="W. W. Thomas" authorityYear="2024" class="Liliopsida" family="Cyperaceae" genus="Rhynchospora" kingdom="Plantae" order="Poales" phylum="Tracheophyta" rank="species" species="eremica">
|
||
<emphasis id="9096402E3BFF58E6206BD664E6700245" italics="true">Rhynchospora eremica</emphasis>
|
||
</taxonomicName>
|
||
is sympatric with
|
||
<taxonomicName id="A74B4AADBF54CDE339BA9D579DF748D7" authorityName="W. W. Thomas" authorityYear="2024" class="Liliopsida" family="Cyperaceae" genus="Rhynchospora" kingdom="Plantae" order="Poales" phylum="Tracheophyta" rank="species" species="hamadryadis">
|
||
<emphasis id="91D20D31E17C791967ADAC4558C60B3F" italics="true">R. hamadryadis</emphasis>
|
||
</taxonomicName>
|
||
described above but has never been collected at other localities where the latter species occurs (Fig.
|
||
<figureCitation id="2523E98A92E4BF48A93CB0BF2754D418" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Distribution map of Rhynchospora barbosae (black circles), R. hamadryadis (grey squares), and R. eremica (white triangle)." figureDoi="10.5091/plecevo.117163.figure5" httpUri="https://binary.pensoft.net/fig/1095141">5</figureCitation>
|
||
). It was collected at a single unprotected locality that has since been altered, and has never been collected anywhere else, but we hope that additional exploration may reveal it in other locations. In addition, the deciduous seasonal tropical forest, is the most exploited and sensitive
|
||
<typeStatus id="2EFC59161B32A8681B2E6AECA4770CDA">type</typeStatus>
|
||
of Atlantic Forest. Since
|
||
<taxonomicName id="87947A3FF6D905BD35593B4EB7E6418C" authorityName="W. W. Thomas" authorityYear="2024" class="Liliopsida" family="Cyperaceae" genus="Rhynchospora" kingdom="Plantae" order="Poales" phylum="Tracheophyta" rank="species" species="eremica">
|
||
<emphasis id="DC2DA3FAC1637E509101C7436785B6BA" italics="true">R. eremica</emphasis>
|
||
</taxonomicName>
|
||
is only known from a single location and since we infer a decline in the area, extent and / or quality of the habitat as a result of grazing, the species is assessed as Critically Endangered:
|
||
<collectionCode id="3DD7F4A791D8CCF1C0E7C0190382048B" country="Costa Rica" lsid="urn:lsid:biocol.org:col:15652" name="Museo Nacional de Costa Rica" type="Herbarium">CR</collectionCode>
|
||
<collectionCode id="06FE25CA2B6A106F575DB4818E2FB70A" country="Germany" lsid="urn:lsid:biocol.org:col:15534" name="Botanischer Garten und Botanisches Museum Berlin-Dahlem, Zentraleinrichtung der Freien Universitaet" type="Herbarium">B</collectionCode>
|
||
2 ab (iii).
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="SECID0E3XAG" type="Taxonomic notes">
|
||
<paragraph id="8F6002EF588AE09E58187F8904FFF919">
|
||
<heading id="36651B77536201015FED497E85994E55" reason="title">Taxonomic notes.</heading>
|
||
</paragraph>
|
||
<paragraph id="43A338DC5014D52C780BEB39155D72B6">
|
||
<taxonomicName id="883EA3FFED1416AA76ED6FA34F92EC1F" authorityName="W. W. Thomas" authorityYear="2024" class="Liliopsida" family="Cyperaceae" genus="Rhynchospora" kingdom="Plantae" order="Poales" phylum="Tracheophyta" rank="species" species="eremica">
|
||
<emphasis id="58FF3D29AB800A03CAD85F14C01B0267" italics="true">Rhynchospora eremica</emphasis>
|
||
</taxonomicName>
|
||
is one of the smallest species in section
|
||
<taxonomicName id="14F5B58DEA8E940076A977F91C9C2460" rank="section" section="Pleurostachys">
|
||
<emphasis id="46E1F5F5FFF363C81E19CE0A2B479593" italics="true">Pleurostachys</emphasis>
|
||
</taxonomicName>
|
||
with culms only reaching
|
||
<quantity id="CE7D45754C6982DFAA8047862677A7F2" metricMagnitude="-1" metricUnit="m" metricValue="3.0" unit="cm" value="30.0">30 cm</quantity>
|
||
long. Of the smaller species with basal or mostly basal leaves, it is unique in having short, broad leaf blades (12–21 ×
|
||
<quantity id="2EFB034382F8BDF76F84D31519DC9377" metricMagnitude="-3" metricUnit="m" metricValue="7.5" metricValueMax="10.0" metricValueMin="5.0" unit="cm" value="0.75" valueMax="1.0" valueMin="0.5">0.5–1 cm</quantity>
|
||
) and occurring in dry forests. See key to the species of
|
||
<emphasis id="2552737552D7C9CC59243F10FE553F1C" italics="true">
|
||
<collectionCode id="C2A23F94ED300281A497C8A761CC6F84" country="Chile" name="Departamento de Geologia, Universidad de Chile">R</collectionCode>
|
||
. sect.
|
||
<taxonomicName id="5D27AB5B44D8AF4DC1EC1AD204880365" class="Liliopsida" family="Cyperaceae" genus="Pleurostachys" kingdom="Plantae" order="Poales" phylum="Tracheophyta" rank="genus">Pleurostachys</taxonomicName>
|
||
</emphasis>
|
||
below.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |