treatments-xml/data/E3/5D/87/E35D87DA78200D0393D5F8F256498921.xml

<document id="6D0304BA00B1E82C699E2ACB8BFD2789" ID-CLB-Dataset="55924" ID-DOI="10.11646/phytotaxa.543.3.4" ID-GBIF-Dataset="7c909c6f-d126-4a25-8d7b-0cb6394c9b7c" ID-ISSN="1179-3163" ID-Zenodo-Dep="6460355" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1649925929964" checkinUser="plazi" docAuthor="Lin, Che-Wei, Phonepaseuth, Phongphayboun &amp; Rahm, Peter" docDate="2022" docId="E35D87DA78200D0393D5F8F256498921" docLanguage="en" docName="phytotaxa.543.3.4.pdf" docOrigin="Phytotaxa 543 (3)" docSource="http://dx.doi.org/10.11646/phytotaxa.543.3.4" docStyle="DocumentStyle:96748F8F1B6C902996E134952A3A36B9.7:Phytotaxa.2014-.journal_article" docStyleId="96748F8F1B6C902996E134952A3A36B9" docStyleName="Phytotaxa.2014-.journal_article" docStyleVersion="7" docTitle="Begonia xenos C. W. Lin, Phonep. &amp; Rahm 2022, sp. nov." docType="treatment" docVersion="8" lastPageNumber="199" masterDocId="1F64FFA278200D05935DFFA652138B65" masterDocTitle="Begonia xenos-a new species and an updated checklist of Begonia in Laos" masterLastPageNumber="202" masterPageNumber="193" pageNumber="193" updateTime="1699328929268" updateUser="ExternalLinkService" zenodo-license-figures="UNSPECIFIED" zenodo-license-treatments="UNSPECIFIED">
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<mods:title id="F1147A0072ACFB22BE25DEBB30D080D7">Begonia xenos-a new species and an updated checklist of Begonia in Laos</mods:title>
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<mods:namePart id="9619FA1C82E5FDFB66B6F5F062B1046E">Lin, Che-Wei</mods:namePart>
<mods:nameIdentifier id="BC570E987DD3F4AB0A47AE1AED070574" type="ORCID">0000-0002-8564-5793</mods:nameIdentifier>
<mods:affiliation id="CD90149039C88156CA378D462BBC7E93">Herbarium of Taiwan Forestry Research Institute (TAIF), Taiwan Forestry Research Institute, No. 53, Nan-Hai Road, Taipei 100, Taiwan &amp; varalba @ gmail. com; https: // orcid. org / 0000 - 0002 - 8564 - 5793</mods:affiliation>
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<mods:namePart id="746755AF38A5502F52E38F62EDD8F079">Phonepaseuth, Phongphayboun</mods:namePart>
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<mods:affiliation id="C3A03461D410BD96DF5DA551CE3EAA5E">Faculty of Environmental Sciences, National University of Laos, Dongdok Campus, Xaythany District, Vientiane Capital, Laos &amp; p. phonepaseuth @ nuol. edu. la; https: // orcid. org / 0000 - 0001 - 5514 - 777 X</mods:affiliation>
<mods:nameIdentifier id="F84DDE997247C7A09160E172FC4F5720" type="email">p.phonepaseuth@nuol.edu.la</mods:nameIdentifier>
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<mods:namePart id="6B2548346302D28DF2BEE396E74E582E">Rahm, Peter</mods:namePart>
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<mods:affiliation id="E318BC4FC932EADA53C683E05D3BDB97">Bifaenge 80, 79111 Freiburg, Germany &amp; peter. rahm @ gmail. com; https: // orcid. org / 0000 - 0003 - 2613 - 6638</mods:affiliation>
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<taxonomicName id="ACF44D4F78200D0593D5F8F2507F8C0B" ID-CoL="98Y59" authority="C.W.Lin, Phonep. &amp; Rahm" authorityName="C. W. Lin, Phonep. &amp; Rahm" authorityYear="2022" box="[136,620,1876,1902]" class="Magnoliopsida" family="Begoniaceae" genus="Begonia" kingdom="Plantae" order="Cucurbitales" pageId="0" pageNumber="193" phylum="Tracheophyta" rank="species" species="xenos" status="sp. nov.">
<emphasis id="5980EADE78200D0593D5F8F253208C0B" bold="true" box="[136,307,1876,1902]" italics="true" pageId="0" pageNumber="193">Begonia xenos</emphasis>
C.W.Lin, Phonep. &amp; Rahm
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, 
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§ 
<taxonomicName id="ACF44D4F78200D0591BAF8F2516D8C0B" box="[743,894,1876,1902]" class="Magnoliopsida" family="Begoniaceae" genus="Platycentrum" higherTaxonomySource="GBIF" kingdom="Plantae" order="Cucurbitales" pageId="0" pageNumber="199" phylum="Tracheophyta" rank="genus">
<emphasis id="5980EADE78200D0591BAF8F2516D8C0B" box="[743,894,1876,1902]" italics="true" pageId="0" pageNumber="193">Platycentrum</emphasis>
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(
<figureCitation id="F3CF2A4978200D0590D0F8F251C98C0B" box="[909,986,1876,1902]" captionStart="FIGURE 2" captionStartId="2.[136,229,1932,1954]" captionTargetBox="[190,1428,222,1873]" captionTargetId="figure-21@2.[138,1448,190,1908]" captionTargetPageId="2" captionText="FIGURE 2. Begonia xenos C.W.Lin, Phonep. &amp; Rahm. A. Habit; B. Stipule; C, C’. Portion of leaf, upper and lower surface; D, D’. Bracts; E, E’. Staminate flower, face and side views; F, F’. Stamens, ventral and dorsal views; G, G’. Pistillate flower, face and side views; H. Cross section of ovary." figureDoi="http://doi.org/10.5281/zenodo.6460363" httpUri="https://zenodo.org/record/6460363/files/figure.png" pageId="0" pageNumber="193">Figs. 2</figureCitation>
&amp; 
<figureCitation id="F3CF2A4978200D0590A3F8F2561F8C0B" box="[1022,1036,1876,1902]" captionStart="FIGURE 3" captionStartId="3.[136,229,1935,1957]" captionTargetBox="[151,1436,190,1911]" captionTargetId="figure-18@3.[151,1436,190,1911]" captionTargetPageId="3" captionText="FIGURE 3. Begonia xenos C.W.Lin, Phonep. &amp; Rahm. A, B. Habitats; C, D. Habit and habitats; E, F. Portion of leaf, upper and lower surfaces; G, H. Stipules of stem; I, J. Inflorescence, showing bracts and staminate flower, K. pistillate flower. Photos A–D, F, H by Peter Rahm; Photos E, G, I–K by Ka-Tsun Chang." figureDoi="http://doi.org/10.5281/zenodo.6460367" httpUri="https://zenodo.org/record/6460367/files/figure.png" pageId="0" pageNumber="193">3</figureCitation>
)
</paragraph>
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<paragraph id="6B4B36CC78200D0593D5F806502B8CBF" blockId="0.[136,1451,1952,2010]" pageId="0" pageNumber="193">
<emphasis id="5980EADE78200D0593D5F80652C98CD0" bold="true" box="[136,218,1952,1973]" pageId="0" pageNumber="193">Type:—</emphasis>
<materialsCitation id="DB9C3C9178200D059387F80657408CD0" ID-GBIF-Occurrence="3753060301" box="[218,1363,1952,1974]" collectingDate="2018-11-11" collectionCode="C, W" country="Laos" elevation="290" location="Tham Khanh cave" municipality="Vang Vieng District" pageId="0" pageNumber="193" specimenCount="1" stateProvince="Viangchan">
<collectingCountry id="13E3765C78200D059387F806530F8CD0" box="[218,284,1952,1973]" name="Laos" pageId="0" pageNumber="193">LAOS</collectingCountry>
: 
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, 
<collectingMunicipality id="8B2FACB678200D0592ADF80650A48CD3" box="[496,695,1952,1974]" pageId="0" pageNumber="193">Vang Vieng District</collectingMunicipality>
, 
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, 
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. 
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elevation, 
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, 
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. 
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</emphasis>
</materialsCitation>
<emphasis id="5980EADE78200D05960EF80657448CD0" box="[1363,1367,1952,1973]" italics="true" pageId="0" pageNumber="193">.</emphasis>
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712
</emphasis>
(
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; isotypes 
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, 
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)
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.
</paragraph>
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<caption id="3F8B664478210D0493D5FC8751BB8852" ID-DOI="http://doi.org/10.5281/zenodo.6460361" ID-Zenodo-Dep="6460361" box="[136,936,801,824]" httpUri="https://zenodo.org/record/6460361/files/figure.png" pageId="1" pageNumber="194" startId="1.[136,229,801,823]" targetBox="[151,1436,190,777]" targetPageId="1">
<paragraph id="6B4B36CC78210D0493D5FC8751BB8852" blockId="1.[136,936,801,824]" box="[136,936,801,824]" pageId="1" pageNumber="194">
<emphasis id="5980EADE78210D0493D5FC8752ED8853" bold="true" box="[136,254,801,823]" pageId="1" pageNumber="194">FIGURE 1.</emphasis>
Distribution map of 
<taxonomicName id="ACF44D4F78210D04929AFC87504B8852" box="[455,600,801,823]" class="Magnoliopsida" family="Begoniaceae" genus="Begonia" kingdom="Plantae" order="Cucurbitales" pageId="1" pageNumber="194" phylum="Tracheophyta" rank="species" species="xenos">
<emphasis id="5980EADE78210D04929AFC87504B8852" bold="true" box="[455,600,801,823]" italics="true" pageId="1" pageNumber="194">Begonia xenos</emphasis>
</taxonomicName>
(star) in Vientiane Province, Laos.
</paragraph>
</caption>
<subSubSection id="23EE654778210D0493D5FCC151088D10" pageId="1" pageNumber="194" type="description">
<paragraph id="6B4B36CC78210D0493D5FCC151088D10" blockId="1.[136,1452,870,2085]" pageId="1" pageNumber="194">
Erect or ascending herb, lithophytic or epiphytic. 
<emphasis id="5980EADE78210D04919BFCC0511088E5" bold="true" box="[710,771,870,896]" pageId="1" pageNumber="194">Stem</emphasis>
slender, young stem scarlet red, becoming pale brown and slightly woody in appearance, internodes 
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long, 
<quantity id="AC0C9B2978210D04904FFC2C516288C0" box="[786,881,906,933]" metricMagnitude="-3" metricUnit="m" metricValue="4.5" metricValueMax="6.0" metricValueMin="3.0" pageId="1" pageNumber="194" unit="mm" value="4.5" valueMax="6.0" valueMin="3.0">3−6 mm</quantity>
thick, glabrous; young plants rooting at nodes and climbing vertically up cliffs or trees. 
<emphasis id="5980EADE78210D049176FC08509988AD" bold="true" box="[555,650,942,968]" pageId="1" pageNumber="194">Stipules</emphasis>
persistent, bright red, triangular to narrowly triangular, 
<quantity id="AC0C9B2978210D04965DFC08577888AC" box="[1280,1387,942,969]" metricMagnitude="-2" metricUnit="m" metricValue="1.0" metricValueMax="1.5" metricValueMin="0.5" pageId="1" pageNumber="194" unit="mm" value="10.0" valueMax="15.0" valueMin="5.0">5–15 mm</quantity>
long, 
<quantity id="AC0C9B2978210D0493D5FC7452E98888" box="[136,250,978,1005]" metricMagnitude="-3" metricUnit="m" metricValue="5.75" metricValueMax="8.0" metricValueMin="3.5" pageId="1" pageNumber="194" unit="mm" value="5.75" valueMax="8.0" valueMin="3.5">3.5–8 mm</quantity>
wide, herbaceous, strongly keeled, few fleshy red hairs fused into at the base of the keel, glabrous, margin entire, apex aristate, arista 
<emphasis id="5980EADE78210D0492E4FC5153C08F75" box="[441,467,1015,1040]" italics="true" pageId="1" pageNumber="194">ca</emphasis>
. 
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long. 
<emphasis id="5980EADE78210D049133FC5050D38F75" bold="true" box="[622,704,1014,1040]" pageId="1" pageNumber="194">Leaves</emphasis>
alternate, petiole terete, scarlet red, 
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long, 
<quantity id="AC0C9B2978210D04967FFC5057BF8F74" box="[1314,1452,1014,1041]" metricMagnitude="-3" metricUnit="m" metricValue="2.0" metricValueMax="2.5" metricValueMin="1.5" pageId="1" pageNumber="194" unit="mm" value="2.0" valueMax="2.5" valueMin="1.5">1.5−2.5 mm</quantity>
thick, glabrous; leaf blade pendent, slightly asymmetric, oblique, ovate to lanceolate-ovate, 
<quantity id="AC0C9B2978210D0497DAFBBC56EE8F50" box="[1159,1277,1050,1077]" metricMagnitude="-2" metricUnit="m" metricValue="8.75" metricValueMax="11.0" metricValueMin="6.5" pageId="1" pageNumber="194" unit="cm" value="8.75" valueMax="11.0" valueMin="6.5">6.5−11 cm</quantity>
long, 
<quantity id="AC0C9B2978210D049619FBBC57B88F50" box="[1348,1451,1050,1077]" metricMagnitude="-2" metricUnit="m" metricValue="3.15" metricValueMax="4.3" metricValueMin="2.0" pageId="1" pageNumber="194" unit="cm" value="3.15" valueMax="4.3" valueMin="2.0">2–4.3 cm</quantity>
wide, broad side 
<quantity id="AC0C9B2978210D049217FB9853DA8F3C" box="[330,457,1086,1113]" metricMagnitude="-2" metricUnit="m" metricValue="1.9" metricValueMax="2.5" metricValueMin="1.3" pageId="1" pageNumber="194" unit="cm" value="1.9" valueMax="2.5" valueMin="1.3">1.3–2.5 cm</quantity>
wide, glabrous, subpeltate, apex attenuate to caudate, margin subentire or minutely and sparsely denticulate, undulate; leaf thinly coriaceous, succulent, adaxially emerald green, sometimes with silvery white semicontinuous patches or spots of variable sizes between veins; abaxially pale green; venation pinnate, midrib 
<emphasis id="5980EADE78210D049629FB21579D8FC5" box="[1396,1422,1159,1184]" italics="true" pageId="1" pageNumber="194">ca</emphasis>
. 3 secondary veins on broad side, other primary veins branching dichotomously. 
<emphasis id="5980EADE78210D049082FB0C569B8FA1" bold="true" box="[991,1160,1194,1220]" pageId="1" pageNumber="194">Inflorescences</emphasis>
axillary, bisexual, cymose arising directly from stem, 
<emphasis id="5980EADE78210D0492EAFB6953C28F8D" box="[439,465,1231,1256]" italics="true" pageId="1" pageNumber="194">ca</emphasis>
. 2 orders of branching; peduncle red, 
<quantity id="AC0C9B2978210D049027FB6851DF8F8C" box="[890,972,1230,1257]" metricMagnitude="-2" metricUnit="m" metricValue="6.0" metricValueMax="9.0" metricValueMin="3.0" pageId="1" pageNumber="194" unit="cm" value="6.0" valueMax="9.0" valueMin="3.0">3–9 cm</quantity>
or longer, glabrous; bracts deciduous, pale yellow-green, ovate, elliptic to oblong, first pair 
<emphasis id="5980EADE78210D0491F1FB5550D58E69" box="[684,710,1267,1292]" italics="true" pageId="1" pageNumber="194">ca</emphasis>
. 
<quantity id="AC0C9B2978210D049188FB5551048E68" box="[725,791,1267,1293]" metricMagnitude="-3" metricUnit="m" metricValue="7.0" pageId="1" pageNumber="194" unit="mm" value="7.0">7 mm</quantity>
long, 
<quantity id="AC0C9B2978210D049003FB5451B38E68" box="[862,928,1266,1293]" metricMagnitude="-3" metricUnit="m" metricValue="4.0" pageId="1" pageNumber="194" unit="mm" value="4.0">4 mm</quantity>
wide, glabrous, margin subentire to crenulate; bracts of upper inflorescence similar but smaller. 
<emphasis id="5980EADE78210D049197FAB051B08E55" bold="true" box="[714,931,1302,1328]" pageId="1" pageNumber="194">Staminate flower:</emphasis>
pedicel pale yellowish pink, 
<quantity id="AC0C9B2978210D0497A1FAB0577B8E54" box="[1276,1384,1302,1329]" metricMagnitude="-2" metricUnit="m" metricValue="1.25" metricValueMax="1.5" metricValueMin="1.0" pageId="1" pageNumber="194" unit="cm" value="1.25" valueMax="1.5" valueMin="1.0">1–1.5 cm</quantity>
long, glabrous, tepals 4, dusky white to creamy white tinged green basally, sometimes with a slightly pinkish tinge, glabrous, margin slightly crenulate; outer 2 ovate to orbicular, 
<quantity id="AC0C9B2978210D049190FAF851278E1C" box="[717,820,1374,1401]" metricMagnitude="-2" metricUnit="m" metricValue="1.25" metricValueMax="1.5" metricValueMin="1.0" pageId="1" pageNumber="194" unit="cm" value="1.25" valueMax="1.5" valueMin="1.0">1–1.5 cm</quantity>
long, 
<quantity id="AC0C9B2978210D049025FAF851CC8E1C" box="[888,991,1374,1401]" metricMagnitude="-2" metricUnit="m" metricValue="1.2" metricValueMax="1.4" metricValueMin="1.0" pageId="1" pageNumber="194" unit="cm" value="1.2" valueMax="1.4" valueMin="1.0">1–1.4 cm</quantity>
wide, inner 2 elliptic to obovate, 
<quantity id="AC0C9B2978210D04960DFAF857BF8E1C" box="[1360,1452,1374,1401]" metricMagnitude="-3" metricUnit="m" metricValue="7.0" metricValueMax="9.0" metricValueMin="5.0" pageId="1" pageNumber="194" unit="mm" value="7.0" valueMax="9.0" valueMin="5.0">5–9 mm</quantity>
long, 
<quantity id="AC0C9B2978210D049397FA24533A8EF8" box="[202,297,1410,1437]" metricMagnitude="-3" metricUnit="m" metricValue="3.5" metricValueMax="5.0" metricValueMin="2.0" pageId="1" pageNumber="194" unit="mm" value="3.5" valueMax="5.0" valueMin="2.0">2–5 mm</quantity>
wide; androecium actinomorphic, 
<emphasis id="5980EADE78210D0491EAFA2550C28EF9" box="[695,721,1411,1436]" italics="true" pageId="1" pageNumber="194">ca</emphasis>
. 
<quantity id="AC0C9B2978210D0491BCFA24513C8EF8" box="[737,815,1410,1437]" metricMagnitude="-3" metricUnit="m" metricValue="3.0" pageId="1" pageNumber="194" unit="cm" value="0.3">0.3 cm</quantity>
across; stamens creamy yellow, 52–85; filaments fused at base; anthers narrowly obovate, 
<emphasis id="5980EADE78210D04914EFA01503E8EA5" box="[531,557,1447,1472]" italics="true" pageId="1" pageNumber="194">ca</emphasis>
. 
<quantity id="AC0C9B2978210D049160FA00506C8EA4" box="[573,639,1446,1473]" metricMagnitude="-3" metricUnit="m" metricValue="1.0" pageId="1" pageNumber="194" unit="mm" value="1.0">1 mm</quantity>
long, 2-locular, apex truncate, shorter than filaments. 
<emphasis id="5980EADE78210D0497BBFA0057B88EA5" bold="true" box="[1254,1451,1446,1472]" pageId="1" pageNumber="194">Pistillate flower:</emphasis>
pedicel pale yellowish pink, 
<emphasis id="5980EADE78210D049290FA6D53F48E81" box="[461,487,1483,1508]" italics="true" pageId="1" pageNumber="194">ca</emphasis>
. 
<quantity id="AC0C9B2978210D0492AAFA6C50578E80" box="[503,580,1482,1509]" metricMagnitude="-2" metricUnit="m" metricValue="1.5" pageId="1" pageNumber="194" unit="cm" value="1.5">1.5 cm</quantity>
long, glabrous, tepals 5, pink, rhombic to elliptic, 
<quantity id="AC0C9B2978210D0497D9FA6C56E38E80" box="[1156,1264,1482,1509]" metricMagnitude="-3" metricUnit="m" metricValue="9.0" metricValueMax="12.0" metricValueMin="6.0" pageId="1" pageNumber="194" unit="mm" value="9.0" valueMax="12.0" valueMin="6.0">6–12 mm</quantity>
long, 
<quantity id="AC0C9B2978210D049664FA6C57BF8E80" box="[1337,1452,1482,1509]" metricMagnitude="-3" metricUnit="m" metricValue="5.75" metricValueMax="9.0" metricValueMin="2.5" pageId="1" pageNumber="194" unit="mm" value="5.75" valueMax="9.0" valueMin="2.5">2.5–9 mm</quantity>
wide; ovary trigonous-ellipsoid, 
<emphasis id="5980EADE78210D0492A7FA4950078D6D" box="[506,532,1519,1544]" italics="true" pageId="1" pageNumber="194">ca</emphasis>
. 
<quantity id="AC0C9B2978210D049179FA4850758D6C" box="[548,614,1518,1545]" metricMagnitude="-3" metricUnit="m" metricValue="5.0" pageId="1" pageNumber="194" unit="mm" value="5.0">5 mm</quantity>
long, 
<quantity id="AC0C9B2978210D0491F2FA4851148D6C" box="[687,775,1518,1545]" metricMagnitude="-3" metricUnit="m" metricValue="2.5" pageId="1" pageNumber="194" unit="mm" value="2.5">2.5 mm</quantity>
thick (wings excluded), yellowish red, glabrous; 3-winged, wings unequal, reddish, glabrous, 
<emphasis id="5980EADE78210D049149F9B5503D8D49" box="[532,558,1555,1580]" italics="true" pageId="1" pageNumber="194">ca</emphasis>
. 
<quantity id="AC0C9B2978210D049162F9B450908D48" box="[575,643,1554,1581]" metricMagnitude="-3" metricUnit="m" metricValue="8.0" pageId="1" pageNumber="194" unit="mm" value="8.0">8 mm</quantity>
long, abaxial wing triangular, 
<emphasis id="5980EADE78210D0490B4F9B556108D49" box="[1001,1027,1555,1580]" italics="true" pageId="1" pageNumber="194">ca</emphasis>
. 
<quantity id="AC0C9B2978210D049749F9B4564B8D48" box="[1044,1112,1554,1581]" metricMagnitude="-3" metricUnit="m" metricValue="5.0" pageId="1" pageNumber="194" unit="mm" value="5.0">5 mm</quantity>
wide, lateral wings narrowly crescent-shaped, 
<emphasis id="5980EADE78210D049217F99153778D35" box="[330,356,1591,1616]" italics="true" pageId="1" pageNumber="194">ca</emphasis>
. 
<quantity id="AC0C9B2978210D04922EF99053A68D34" box="[371,437,1590,1617]" metricMagnitude="-3" metricUnit="m" metricValue="2.0" pageId="1" pageNumber="194" unit="mm" value="2.0">2 mm</quantity>
wide, margin entire; ovary 2-locular, placenta bilamellate; styles 2, fused at base, yellow, 
<emphasis id="5980EADE78210D0493D5F9FD52B98D11" box="[136,170,1627,1652]" italics="true" pageId="1" pageNumber="194">ca.</emphasis>
<quantity id="AC0C9B2978210D0493EDF9FC52EF8D10" box="[176,252,1626,1653]" metricMagnitude="-3" metricUnit="m" metricValue="4.0" pageId="1" pageNumber="194" unit="cm" value="0.4">0.4 cm</quantity>
long, stigma spirally twisted. 
<emphasis id="5980EADE78210D049112F9FC50BC8D11" bold="true" box="[591,687,1626,1652]" pageId="1" pageNumber="194">Capsule</emphasis>
not seen.
</paragraph>
</subSubSection>
<subSubSection id="23EE654778210D0493E0F9D8537E8D85" pageId="1" pageNumber="194" type="distribution">
<paragraph id="6B4B36CC78210D0493E0F9D8537E8D85" blockId="1.[136,1452,870,2085]" pageId="1" pageNumber="194">
<emphasis id="5980EADE78210D0493E0F9D850158DFD" bold="true" box="[189,518,1662,1688]" pageId="1" pageNumber="194">Distribution and ecology:—</emphasis>
<taxonomicName id="ACF44D4F78210D04915AF9D950B98DFD" box="[519,682,1663,1688]" class="Magnoliopsida" family="Begoniaceae" genus="Begonia" kingdom="Plantae" order="Cucurbitales" pageId="1" pageNumber="194" phylum="Tracheophyta" rank="species" species="xenos">
<emphasis id="5980EADE78210D04915AF9D950B98DFD" box="[519,682,1663,1688]" italics="true" pageId="1" pageNumber="194">Begonia xenos</emphasis>
</taxonomicName>
is endemic to Vang Vieng, 
<collectingCountry id="13E3765C78210D049085F9D956018DFC" box="[984,1042,1663,1689]" name="Laos" pageId="1" pageNumber="194">Laos</collectingCountry>
. It grows on limestone cliffs or at the entrance of semi-shady to shady, slightly moist caves, sometimes on low branches of trees in deeply shaded areas at 
<emphasis id="5980EADE78210D0493D5F96152B98D85" box="[136,170,1735,1760]" italics="true" pageId="1" pageNumber="194">ca.</emphasis>
<quantity id="AC0C9B2978210D0493EDF96052E48D84" box="[176,247,1734,1761]" metricMagnitude="2" metricUnit="m" metricValue="2.9" pageId="1" pageNumber="194" unit="m" value="290.0">290 m</quantity>
elevation.
</paragraph>
</subSubSection>
<subSubSection id="23EE654778210D0493E0F94C531B8C29" pageId="1" pageNumber="194" type="etymology">
<paragraph id="6B4B36CC78210D0493E0F94C531B8C29" blockId="1.[136,1452,870,2085]" pageId="1" pageNumber="194">
<emphasis id="5980EADE78210D0493E0F94C53778C61" bold="true" box="[189,356,1770,1796]" pageId="1" pageNumber="194">Etymology:—</emphasis>
From the Greek 
<taxonomicName id="ACF44D4F78210D04917FF94D50718C61" box="[546,610,1771,1796]" class="Magnoliopsida" family="Begoniaceae" genus="Begonia" kingdom="Plantae" order="Cucurbitales" pageId="1" pageNumber="194" phylum="Tracheophyta" rank="species" species="xenos">
<emphasis id="5980EADE78210D04917FF94D50718C61" box="[546,610,1771,1796]" italics="true" pageId="1" pageNumber="194">xenos</emphasis>
</taxonomicName>
, meaning ‘strange’. Most species in 
<emphasis id="5980EADE78210D049757F94D56088C61" box="[1034,1051,1771,1796]" italics="true" pageId="1" pageNumber="194">B</emphasis>
. sect. 
<taxonomicName id="ACF44D4F78210D04973AF94C56ED8C61" box="[1127,1278,1770,1796]" class="Magnoliopsida" family="Begoniaceae" genus="Platycentrum" higherTaxonomySource="GBIF" kingdom="Plantae" order="Cucurbitales" pageId="1" pageNumber="199" phylum="Tracheophyta" rank="genus">
<emphasis id="5980EADE78210D04973AF94C56ED8C61" box="[1127,1278,1770,1796]" italics="true" pageId="1" pageNumber="194">Platycentrum</emphasis>
</taxonomicName>
have basifixed leaves. The epithet ‘ 
<taxonomicName id="ACF44D4F78210D049236F8A953B88C4D" box="[363,427,1807,1832]" class="Magnoliopsida" family="Begoniaceae" genus="Begonia" kingdom="Plantae" order="Cucurbitales" pageId="1" pageNumber="194" phylum="Tracheophyta" rank="species" species="xenos">
<emphasis id="5980EADE78210D049236F8A953B88C4D" box="[363,427,1807,1832]" italics="true" pageId="1" pageNumber="194">xenos</emphasis>
</taxonomicName>
’ refers to the subpeltate leaves, an unusual morphological character compared to the rest of the section.
</paragraph>
</subSubSection>
<subSubSection id="23EE654778210D0493E0F8F057198341" pageId="1" pageNumber="194" type="conservation">
<paragraph id="6B4B36CC78210D0493E0F8F057198341" blockId="1.[136,1452,870,2085]" pageId="1" pageNumber="194">
<emphasis id="5980EADE78210D0493E0F8F050518C15" bold="true" box="[189,578,1878,1904]" pageId="1" pageNumber="194">Proposed conservation status:—</emphasis>
This species is local and scarcely endemic, while most of its populations are found from only a few limestone cliffs, with an estimated 100 mature individuals in total based on recent surveys. Based on its succulent rhizome/leaves, this species obviously has the ability to deal with the environment of secondary forests, but it only occurs in an small area of Vang Vieng. We consider an IUCN category of Endangered (EN: D) to be appropriate, considering that there are only very few individuals restricted in a single habitat, a chance event due to climate change or human impact could cause it to become Critically Endangered (CR) or Extinct (EX).
</paragraph>
</subSubSection>
<caption id="3F8B664478220D0793D5F82A53918C8F" ID-DOI="http://doi.org/10.5281/zenodo.6460363" ID-Zenodo-Dep="6460363" httpUri="https://zenodo.org/record/6460363/files/figure.png" pageId="2" pageNumber="195" startId="2.[136,229,1932,1954]" targetBox="[190,1428,222,1873]" targetPageId="2">
<paragraph id="6B4B36CC78220D0793D5F82A53918C8F" blockId="2.[136,1452,1932,2027]" pageId="2" pageNumber="195">
<emphasis id="5980EADE78220D0793D5F82A53138CC4" bold="true" box="[136,256,1932,1954]" pageId="2" pageNumber="195">FIGURE 2.</emphasis>
<taxonomicName id="ACF44D4F78220D07925AF82A51008CC6" authority="C. W. Lin, Phonep. &amp; Rahm. A. Habit" box="[263,787,1932,1955]" class="Magnoliopsida" family="Begoniaceae" genus="Begonia" kingdom="Plantae" order="Cucurbitales" pageId="2" pageNumber="195" phylum="Tracheophyta" rank="species" species="xenos">
<emphasis id="5980EADE78220D07925AF82A53888CC7" bold="true" box="[263,411,1932,1954]" italics="true" pageId="2" pageNumber="195">Begonia xenos</emphasis>
C.W.Lin, Phonep. &amp; Rahm. A. Habit
</taxonomicName>
; B. Stipule; C, C’. Portion of leaf, upper and lower surface; D, D’. Bracts; E, E’. Staminate flower, face and side views; F, F’. Stamens, ventral and dorsal views; G, G’. Pistillate flower, face and side views; H. Cross section of ovary.
</paragraph>
</caption>
<caption id="3F8B664478230D0693D5F82950268C8B" ID-DOI="http://doi.org/10.5281/zenodo.6460367" ID-Zenodo-Dep="6460367" httpUri="https://zenodo.org/record/6460367/files/figure.png" pageId="3" pageNumber="196" startId="3.[136,229,1935,1957]" targetBox="[151,1436,190,1911]" targetPageId="3">
<paragraph id="6B4B36CC78230D0693D5F82950268C8B" blockId="3.[136,1452,1935,2030]" pageId="3" pageNumber="196">
<emphasis id="5980EADE78230D0693D5F82952ED8CC0" bold="true" box="[136,254,1935,1957]" pageId="3" pageNumber="196">FIGURE 3.</emphasis>
<taxonomicName id="ACF44D4F78230D069258F836512C8CC3" authority="C. W. Lin, Phonep. &amp; Rahm. A, B. Habitats" authorityName="C. W. Lin, Phonep. &amp; Rahm. A, B. Habitats" box="[261,831,1936,1958]" class="Magnoliopsida" family="Begoniaceae" genus="Begonia" kingdom="Plantae" order="Cucurbitales" pageId="3" pageNumber="196" phylum="Tracheophyta" rank="species" species="xenos">
<emphasis id="5980EADE78230D069258F83653848CC0" bold="true" box="[261,407,1936,1957]" italics="true" pageId="3" pageNumber="196">Begonia xenos</emphasis>
C.W.Lin, Phonep. &amp; Rahm. A, B. Habitats
</taxonomicName>
; C, D. Habit and habitats; E, F. Portion of leaf, upper and lower surfaces; G, H. Stipules of stem; I, J. Inflorescence, showing bracts and staminate flower, K. pistillate flower. Photos A–D, F, H by Peter Rahm; Photos E, G, I–K by Ka-Tsun Chang.
</paragraph>
</caption>
<caption id="3F8B664478240D0193D5F8BB57B98C1F" ID-DOI="http://doi.org/10.5281/zenodo.6460369" ID-Zenodo-Dep="6460369" httpUri="https://zenodo.org/record/6460369/files/figure.png" pageId="4" pageNumber="197" startId="4.[136,229,1821,1843]" targetBox="[138,1448,190,1796]" targetPageId="4">
<paragraph id="6B4B36CC78240D0193D5F8BB57B98C1F" blockId="4.[136,1452,1820,1915]" pageId="4" pageNumber="197">
<emphasis id="5980EADE78240D0193D5F8BB52EC8C57" bold="true" box="[136,255,1821,1843]" pageId="4" pageNumber="197">FIGURE 4.</emphasis>
<taxonomicName id="ACF44D4F78240D01925AF8BB50998C56" authority="Dorr. A. Habit" box="[263,650,1820,1843]" class="Magnoliopsida" family="Begoniaceae" genus="Begonia" kingdom="Plantae" order="Cucurbitales" pageId="4" pageNumber="197" phylum="Tracheophyta" rank="species" species="sinofloribunda">
<emphasis id="5980EADE78240D01925AF8BB53E78C57" bold="true" box="[263,500,1820,1842]" italics="true" pageId="4" pageNumber="197">Begonia sinofloribunda</emphasis>
Dorr. A. Habit
</taxonomicName>
; B. Inflorescence, showing staminate flowers, C. pistillate flower and capsule; D. Stipules of stem; E, F. Portion of leaf, upper and lower surfaces; G. Pistillate flower, face and side views; H. Staminate flower, face and side views; I. Pistillate flowers and capsules; M. Serial cross sections of an immature capsule. All photos from 
<emphasis id="5980EADE78240D0197ECF8C357308C1F" box="[1201,1315,1893,1914]" italics="true" pageId="4" pageNumber="197">Leong 3401</emphasis>
by C.-I Peng.
</paragraph>
</caption>
<caption id="3F8B664478250D0093D5F8BB565E8C1F" ID-DOI="http://doi.org/10.5281/zenodo.6460371" ID-Zenodo-Dep="6460371" httpUri="https://zenodo.org/record/6460371/files/figure.png" pageId="5" pageNumber="198" startId="5.[136,229,1821,1843]" targetBox="[138,1448,190,1796]" targetPageId="5">
<paragraph id="6B4B36CC78250D0093D5F8BB565E8C1F" blockId="5.[136,1452,1821,1915]" pageId="5" pageNumber="198">
<emphasis id="5980EADE78250D0093D5F8BB53C98C57" bold="true" box="[136,474,1821,1843]" pageId="5" pageNumber="198">
FIGURE 5. 
<taxonomicName id="ACF44D4F78250D00925AF8BB53C98C57" box="[263,474,1821,1842]" class="Magnoliopsida" family="Begoniaceae" genus="Begonia" kingdom="Plantae" order="Cucurbitales" pageId="5" pageNumber="198" phylum="Tracheophyta" rank="species" species="wui-senioris">
<emphasis id="5980EADE78250D00925AF8BB53C98C57" bold="true" box="[263,474,1821,1842]" italics="true" pageId="5" pageNumber="198">Begonia wui-senioris</emphasis>
</taxonomicName>
</emphasis>
C.-I Peng. A, B. Habit; C. Inflorescence; D. Stipules of rhizome; E. Portion of leaf, upper surface, F. lower surface; G. Immature inflorescence; H. Pistillate flower, face and side views; I. Staminate flower, face, side and back views; J. Capsule; K. Serial cross sections of an immature capsule. All photos from 
<emphasis id="5980EADE78250D00900EF8C351D58C1F" box="[851,966,1893,1914]" italics="true" pageId="5" pageNumber="198">Peng 22199</emphasis>
by C.-I Peng.
</paragraph>
</caption>
<subSubSection id="23EE654778260D0393E0FF3856498921" pageId="6" pageNumber="199" type="discussion">
<paragraph id="6B4B36CC78260D0393E0FF3856498921" blockId="6.[136,1452,158,580]" pageId="6" pageNumber="199">
<emphasis id="5980EADE78260D0393E0FF3853358BDD" bold="true" box="[189,294,158,184]" pageId="6" pageNumber="199">Notes:—</emphasis>
<taxonomicName id="ACF44D4F78260D03927BFF3953D98BDD" box="[294,458,159,184]" class="Magnoliopsida" family="Begoniaceae" genus="Begonia" kingdom="Plantae" order="Cucurbitales" pageId="6" pageNumber="199" phylum="Tracheophyta" rank="species" species="xenos">
<emphasis id="5980EADE78260D03927BFF3953D98BDD" box="[294,458,159,184]" italics="true" pageId="6" pageNumber="199">Begonia xenos</emphasis>
</taxonomicName>
is somewhat similar with 
<taxonomicName id="ACF44D4F78260D0391ADFF3956908BDD" authority="Dorr" authorityName="Dorr" box="[752,1155,158,185]" class="Magnoliopsida" family="Begoniaceae" genus="Begonia" kingdom="Plantae" order="Cucurbitales" pageId="6" pageNumber="199" phylum="Tracheophyta" rank="species" species="sinofloribunda">
<emphasis id="5980EADE78260D0391ADFF3951A78BDD" box="[752,948,158,184]" italics="true" pageId="6" pageNumber="199">B. sinofloribunda</emphasis>
Dorr (
<bibRefCitation id="0F654B3D78260D0390A3FF3856698BDD" author="Dorr, L. J." box="[1022,1146,158,184]" pageId="6" pageNumber="199" pagination="265" refId="ref2675" refString="Dorr, L. J. (1999) A new name in Begonia (Begoniaceae) from China. Harvard Papers in Botany 4 (1): 265." type="journal article" year="1999">Dorr, 1999</bibRefCitation>
)
</taxonomicName>
in its ascending stem, leaf shape and arrangement. Both species occur in limestone outcrops, but the new species is different in the flower number per inflorescence that is usually less than 8 (vs. more than 10), staminate flower 4-tepaled (vs. 2-tepaled) and larger outer tepals by 10–15 × 10–14 (vs. 3–8 × 3.5–9) cm, margin slightly crenulate (vs. entire), stamens 52–85 (vs. 25–31), pistillate flower 5-tepaled (vs. 2 or 3-tepaled) and 2-locular (vs. 3-locular) ovary. Moreover, 
<taxonomicName id="ACF44D4F78260D0397DFFE8957578A2D" box="[1154,1348,302,328]" class="Magnoliopsida" family="Begoniaceae" genus="Begonia" kingdom="Plantae" order="Cucurbitales" pageId="6" pageNumber="199" phylum="Tracheophyta" rank="species" species="sinofloribunda">
<emphasis id="5980EADE78260D0397DFFE8957578A2D" box="[1154,1348,302,328]" italics="true" pageId="6" pageNumber="199">B. sinofloribunda</emphasis>
</taxonomicName>
is placed in sect. 
<taxonomicName id="ACF44D4F78260D039386FEF5532C8A09" box="[219,319,339,364]" class="Magnoliopsida" family="Begoniaceae" genus="Platycentrum" higherTaxonomySource="GBIF" kingdom="Plantae" order="Cucurbitales" pageId="6" pageNumber="199" phylum="Tracheophyta" rank="species" species="boisiana">
<emphasis id="5980EADE78260D039386FEF5532C8A09" box="[219,319,339,364]" italics="true" pageId="6" pageNumber="199">Boisiana</emphasis>
</taxonomicName>
by 
<bibRefCitation id="0F654B3D78260D039239FEF450358A09" author="Shui, Y. M. &amp; Chen, W. H. &amp; Peng, H. &amp; Huang, S. H. &amp; Liu, Z. W." box="[356,550,338,364]" pageId="6" pageNumber="199" refId="ref3352" refString="Shui, Y. M., Chen, W. H., Peng, H., Huang, S. H. &amp; Liu, Z. W. (2019) Taxonomy of Begonias. Yunnan Science and Technology Press, Kunming. 468 pp." type="book" year="2019">
Shui 
<emphasis id="5980EADE78260D0392C0FEF553C08A09" box="[413,467,338,364]" italics="true" pageId="6" pageNumber="199">et al.</emphasis>
(2019)
</bibRefCitation>
. Both species are very similar vegetatively, so it is reasonable to speculate that this could be an evolutionary convergence driven by the similar karst habitat of the species. 
<taxonomicName id="ACF44D4F78260D039700FED157128AF5" box="[1117,1281,375,400]" class="Magnoliopsida" family="Begoniaceae" genus="Begonia" kingdom="Plantae" order="Cucurbitales" pageId="6" pageNumber="199" phylum="Tracheophyta" rank="species" species="xenos">
<emphasis id="5980EADE78260D039700FED157128AF5" box="[1117,1281,375,400]" italics="true" pageId="6" pageNumber="199">Begonia xenos</emphasis>
</taxonomicName>
also resembles 
<taxonomicName id="ACF44D4F78260D0393D5FE3D53278AD1" box="[136,308,411,436]" class="Magnoliopsida" family="Begoniaceae" genus="Begonia" kingdom="Plantae" order="Cucurbitales" pageId="6" pageNumber="199" phylum="Tracheophyta" rank="species" species="wui-senioris">
<emphasis id="5980EADE78260D0393D5FE3D53278AD1" box="[136,308,411,436]" italics="true" pageId="6" pageNumber="199">B. wui-senioris</emphasis>
</taxonomicName>
C.-I Peng (
<bibRefCitation id="0F654B3D78260D0392E1FE3C50958AD1" author="Peng, C. &amp; Wang, H. &amp; Kono, Y. &amp; Yang, H. A." box="[444,646,410,437]" pageId="6" pageNumber="199" pagination="13" refId="ref3203" refString="Peng, C. - I, Wang, H., Kono, Y. &amp; Yang, H. A. (2014) Begonia wui-senioris (sect. Platycentrum, Begoniaceae), a new species from Myanmar. Botanical Studies 55: e 13. https: // doi. org / 10.1186 / 1999 - 3110 - 55 - 13" type="journal article" year="2014">
Peng 
<emphasis id="5980EADE78260D0392A2FE3D50298AD1" box="[511,570,410,436]" italics="true" pageId="6" pageNumber="199">et al.</emphasis>
, 2014
</bibRefCitation>
), as both are unusual among the section 
<taxonomicName id="ACF44D4F78260D039700FE3C56E78AD1" box="[1117,1268,410,436]" class="Magnoliopsida" family="Begoniaceae" genus="Platycentrum" higherTaxonomySource="GBIF" kingdom="Plantae" order="Cucurbitales" pageId="6" pageNumber="199" phylum="Tracheophyta" rank="genus">
<emphasis id="5980EADE78260D039700FE3C56E78AD1" box="[1117,1268,410,436]" italics="true" pageId="6" pageNumber="199">Platycentrum</emphasis>
</taxonomicName>
in Indochina in peltate leaves. But 
<taxonomicName id="ACF44D4F78260D039202FE1953AC8ABD" box="[351,447,447,472]" class="Magnoliopsida" family="Begoniaceae" genus="Begonia" kingdom="Plantae" order="Cucurbitales" pageId="6" pageNumber="199" phylum="Tracheophyta" rank="species" species="xenos">
<emphasis id="5980EADE78260D039202FE1953AC8ABD" box="[351,447,447,472]" italics="true" pageId="6" pageNumber="199">B. xenos</emphasis>
</taxonomicName>
is different in having a relatively erect (vs. creeping) stem, ovate to lanceolate-ovate (vs. widely ovate) leaves with a subpeltate (vs. peltate) base, glabrous lamina (vs. abaxially veins puberulous), subentire to crenulate bracts (vs. sparsely ciliate) and glabrous (vs. abaxially scabrous) outer tepals of both staminate and pistillate flowers. A comparison of the salient characters of the three species is shown in 
<tableCitation id="2676037778260D03975DFD8C56478921" box="[1024,1108,554,580]" captionStart="TABLE 1" captionStartId="6.[136,229,626,652]" captionTargetPageId="6" captionText="TABLE 1. Comparison of Begonia xenos C.W.Lin, Phonep. &amp; Rahm, B. sinofloribunda Dorr and B. wui-senioris C.-I Peng." httpUri="http://table.plazi.org/id/3F8B664478260D0393D5FDD452E889D4" pageId="6" pageNumber="199" tableUuid="3F8B664478260D0393D5FDD452E889D4">Table 1</tableCitation>
.
</paragraph>
</subSubSection>
</treatment>
</document>