220 lines
16 KiB
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220 lines
16 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/phytokeys.138.46718" ID-PMC="PMC6968974" ID-Pensoft-Pub="1314-2003-138-187" ID-Pensoft-UUID="D24D4B8434835B3CA881E382FF224750" ID-PubMed="31988613" ModsDocID="1314-2003-138-187" checkinTime="1578758067558" checkinUser="pensoft" docAuthor="Ding, Hong-Bo, Maw, Mya Bhone, Yang, Bin, Bouamanivong, Somsanith & Tan, Yun-Hong" docDate="2020" docId="39CCE06698C35782890147469E69080B" docLanguage="en" docName="PhytoKeys 138: 187-201" docOrigin="PhytoKeys 138" docSource="http://dx.doi.org/10.3897/phytokeys.138.46718" docTitle="Begonia laotica Y. H. Tan & H. B. Ding 2020, sp. nov." docType="treatment" docVersion="5" id="D24D4B8434835B3CA881E382FF224750" lastPageNumber="187" masterDocId="D24D4B8434835B3CA881E382FF224750" masterDocTitle="An updated checklist of Begonia (Begoniaceae) in Laos, with two new species and five new records" masterLastPageNumber="201" masterPageNumber="187" pageNumber="187" updateTime="1668139612763" updateUser="ExternalLinkService">
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<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:titleInfo>
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<mods:title>An updated checklist of Begonia (Begoniaceae) in Laos, with two new species and five new records</mods:title>
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</mods:titleInfo>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Ding, Hong-Bo</mods:namePart>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Maw, Mya Bhone</mods:namePart>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Yang, Bin</mods:namePart>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Bouamanivong, Somsanith</mods:namePart>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Tan, Yun-Hong</mods:namePart>
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</mods:name>
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<mods:typeOfResource>text</mods:typeOfResource>
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<mods:relatedItem type="host">
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<mods:titleInfo>
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<mods:title>PhytoKeys</mods:title>
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</mods:titleInfo>
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<mods:part>
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<mods:date>2020</mods:date>
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<mods:detail type="volume">
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<mods:number>138</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>187</mods:start>
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<mods:end>201</mods:end>
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</mods:extent>
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</mods:part>
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</mods:relatedItem>
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<mods:location>
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<mods:url>http://dx.doi.org/10.3897/phytokeys.138.46718</mods:url>
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</mods:location>
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<mods:classification>journal article</mods:classification>
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<mods:identifier type="DOI">http://dx.doi.org/10.3897/phytokeys.138.46718</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1314-2003-138-187</mods:identifier>
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<mods:identifier type="Pensoft-UUID">D24D4B8434835B3CA881E382FF224750</mods:identifier>
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</mods:mods>
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<treatment ID-GBIF-Taxon="161672070" LSID="urn:lsid:plazi:treatment:39CCE06698C35782890147469E69080B" httpUri="http://treatment.plazi.org/id/39CCE06698C35782890147469E69080B" lastPageNumber="187" pageId="0" pageNumber="187">
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<subSubSection pageId="0" pageNumber="187" type="nomenclature">
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<paragraph pageId="0" pageNumber="187">
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<taxonomicName LSID="39CCE066-98C3-5782-8901-47469E69080B" authority="Y. H. Tan & H. B. Ding" authorityName="Y. H. Tan & H. B. Ding" authorityYear="2020" class="Magnoliopsida" family="Begoniaceae" genus="Begonia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Begonia laotica" order="Cucurbitales" pageId="0" pageNumber="187" phylum="Tracheophyta" rank="species" species="laotica" status="sp. nov.">Begonia laotica Y.H.Tan & H.B.Ding</taxonomicName>
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<taxonomicNameLabel pageId="0" pageNumber="187">sp. nov.</taxonomicNameLabel>
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<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Begonia laotica Y. H. Tan & H. B. Ding, sp. nov. A habitat B leaf blade adaxially C leaf blade abaxially (showing fleshy reddish bristles at the petiole apex) D flowers (front view) E flowers (lateral view) F inflorescence G mature fruits H habit I staminate flower J pistillate flower (young) K stamens (lateral view) L stamens (front view) M cross section of ovary. Photographed by H. B. Ding." figureDoi="10.3897/phytokeys.138.46718.figure1" httpUri="https://binary.pensoft.net/fig/370294" pageId="0" pageNumber="187">Figure 1</figureCitation>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="187" type="reference_group">
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<paragraph pageId="0" pageNumber="187">
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sect.
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<taxonomicName class="Magnoliopsida" family="Begoniaceae" genus="Begonia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="" order="Cucurbitales" pageId="0" pageNumber="187" phylum="Tracheophyta" rank="section" section="Parvibegonia">Parvibegonia</taxonomicName>
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A. de Candolle
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="187" type="diagnosis">
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<paragraph pageId="0" pageNumber="187">Diagnosis.</paragraph>
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<paragraph pageId="0" pageNumber="187">
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The new species is mostly similar to
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<taxonomicName lsidName="B. josephii" pageId="0" pageNumber="187" rank="species" species="josephii">
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<emphasis italics="true" pageId="0" pageNumber="187">B. josephii</emphasis>
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</taxonomicName>
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A. de Candolle (1859: 126) in its peltate, stemless, tuberous habit, but significantly differs by fleshy reddish bristles at the petiole apex (vs. without), ovary 2-locular (vs. 3-locular) and styles 2 (vs. 3).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="187" type="materials_examined">
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<paragraph pageId="0" pageNumber="187">Type.</paragraph>
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<paragraph pageId="0" pageNumber="187">
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Laos. Oudomxay Province, Maung Xai, Phou Hin Phee National Biodiversity Conservation Area,
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<geoCoordinate degrees="20" direction="north" minutes="43" orientation="latitude" precision="1" seconds="18.69" value="20.721859">20°43'18.69"N</geoCoordinate>
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,
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<geoCoordinate degrees="102" direction="east" minutes="08" orientation="longitude" precision="1" seconds="47.97" value="102.14666">102°08'47.97"E</geoCoordinate>
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. 1378 m elev., 25 October 2018, flowering,
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<emphasis italics="true" pageId="0" pageNumber="187">Y.H. Tan & H.B. Ding L0827</emphasis>
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(holotype: HITBC!; isotypes: HNL!).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="187" type="description">
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<paragraph pageId="0" pageNumber="187">Description.</paragraph>
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<paragraph pageId="0" pageNumber="187">
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Monoecious herb, stemless, tuberous, 18-25 cm high, tuber small, subglobose, 12-15 mm in diameter.
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<emphasis bold="true" italics="true" pageId="0" pageNumber="187">Stipule</emphasis>
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: broadly lanceolate, 2-3 mm long, membranous, sparsely glandular hairy, margin fringed by hairs, deciduous.
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<emphasis bold="true" pageId="0" pageNumber="187">
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<emphasis italics="true" pageId="0" pageNumber="187">Leaf</emphasis>
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:
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<emphasis italics="true" pageId="0" pageNumber="187">petiole</emphasis>
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</emphasis>
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6-15 cm long, glabrous or sparsely puberulous; blade ovate, nearly symmetric, 9.2-13.5
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<normalizedToken originalValue="×">x</normalizedToken>
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5.8-11 cm, peltate, base rounded, apex acuminate, margin slightly denticulate, with sparse short hairs, upper surface green, glabrous, lower surface paler, venation palmate-pinnate, tomentose on the veins, fleshy reddish bristles at the petiole apex, thinly succulent in life, thinly papery when dried.
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<emphasis bold="true" italics="true" pageId="0" pageNumber="187">Inflorescence</emphasis>
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: axillary, terminal cyme; peduncle puberulent, 7.2-10.9 cm long, branching 2-3 times; bracts narrowly ovate, ca. 4.0
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<normalizedToken originalValue="×">x</normalizedToken>
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2.5 mm, membranous, reddish line along the middle, slightly glandular hairy, margin fringed by glandular hairs.
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<emphasis bold="true" italics="true" pageId="0" pageNumber="187">Staminate flower</emphasis>
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: pedicel 1.1-1.8 cm, membranous, covered with glandular hairs, tepals 4, pink, unequal, outer 2, ovate, 10-13
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<normalizedToken originalValue="×">x</normalizedToken>
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7-17 mm, glandular hairs on the outer surface, margin entire, inner 2, elliptic, 7-10
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<normalizedToken originalValue="×">x</normalizedToken>
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2-4 mm, glabrous, margin entire; stamens 15-20, anther obovate, ca. 1 mm.
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<emphasis bold="true" italics="true" pageId="0" pageNumber="187">Pistillate flower</emphasis>
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(young): pedicel 0.9-1.2 cm long, membranous, glandular hairy, tepals 5, pink, unequal, outer 2, ovate, 4-6
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<normalizedToken originalValue="×">x</normalizedToken>
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3-4 mm, inner 2, elliptic, 3-5
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<normalizedToken originalValue="×">x</normalizedToken>
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1-3 mm, glandular hairs on the outer surface, especially at the base;
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<emphasis bold="true" italics="true" pageId="0" pageNumber="187">ovary</emphasis>
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2-locular, placentae axial, placentae 2 per locule,
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<emphasis bold="true" italics="true" pageId="0" pageNumber="187">styles</emphasis>
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2, stigmas bifid with twisted bands, highly convolute, golden yellow.
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<emphasis bold="true" italics="true" pageId="0" pageNumber="187">Capsule</emphasis>
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nodding, obovate, pinkish tomentose, unequally 3-winged, abaxial wing oblong, ca. 13 mm long, lateral wings shorter, ca. 3 mm long.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="187" type="phenology">
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<paragraph pageId="0" pageNumber="187">Phenology.</paragraph>
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<paragraph pageId="0" pageNumber="187">Flowering in October-November and fruiting in December.</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="187" type="distribution">
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<paragraph pageId="0" pageNumber="187">Distribution.</paragraph>
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<paragraph pageId="0" pageNumber="187">Endemic to the type locality, Oudomxay Province, Maung Xai, Phou Hin Phee National Biodiversity Conservation Area, Laos.</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="187" type="ecology">
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<paragraph pageId="0" pageNumber="187">Ecology.</paragraph>
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<paragraph pageId="0" pageNumber="187">Restricted to the shaded base of limestone cliff at ca. 1378 m elevation.</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="187" type="etymology">
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<paragraph pageId="0" pageNumber="187">Etymology.</paragraph>
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<paragraph pageId="0" pageNumber="187">
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The specific epithet '
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<emphasis italics="true" pageId="0" pageNumber="187">laotica</emphasis>
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' refers to the type locality in Laos.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="187" type="conservation status">
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<paragraph pageId="0" pageNumber="187">Conservation status.</paragraph>
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<paragraph pageId="0" pageNumber="187">
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Data Deficient (DD) (
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<bibRefCitation author="IUCN" journalOrPublisher="Mathematische-naturwissenchaftliche Klasse" pageId="0" pageNumber="187" publicationUrl="http://www.iucnredlist.org/documents/" refId="B17" refString="IUCN, 2017. Guidelines for Using The IUCN Red List Categories and Criteria. version 13. Prepared by the Standards and Petitions Subcommittee. http://www.iucnredlist.org/documents/" title="Guidelines for Using The IUCN Red List Categories and Criteria. version 13. Prepared by the Standards and Petitions Subcommittee." url="http://www.iucnredlist.org/documents/" year="2017">IUCN 2017</bibRefCitation>
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). The new species was only collected from the limestone cliff of Hin Phee National Biodiversity Conservation Area. Due to its remote habitat, we suggested that the species may not suffer from strong human disturbance. According to the available information, we proposed the preliminary conservation status of this new species as Data Deficient (DD) (
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<bibRefCitation author="IUCN" journalOrPublisher="Mathematische-naturwissenchaftliche Klasse" pageId="0" pageNumber="187" publicationUrl="http://www.iucnredlist.org/documents/" refId="B17" refString="IUCN, 2017. Guidelines for Using The IUCN Red List Categories and Criteria. version 13. Prepared by the Standards and Petitions Subcommittee. http://www.iucnredlist.org/documents/" title="Guidelines for Using The IUCN Red List Categories and Criteria. version 13. Prepared by the Standards and Petitions Subcommittee." url="http://www.iucnredlist.org/documents/" year="2017">IUCN 2017</bibRefCitation>
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).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="187" type="notes">
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<paragraph pageId="0" pageNumber="187">Notes.</paragraph>
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<paragraph pageId="0" pageNumber="187">
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<taxonomicName authorityName="Y. H. Tan & H. B. Ding" authorityYear="2020" class="Magnoliopsida" family="Begoniaceae" genus="Begonia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Begonia laotica" order="Cucurbitales" pageId="0" pageNumber="187" phylum="Tracheophyta" rank="species" species="laotica">
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<emphasis italics="true" pageId="0" pageNumber="187">Begonia laotica</emphasis>
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</taxonomicName>
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is phenotypically most similar to
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<taxonomicName lsidName="B. josephii" pageId="0" pageNumber="187" rank="species" species="josephii">
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<emphasis italics="true" pageId="0" pageNumber="187">B. josephii</emphasis>
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</taxonomicName>
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in its tuberous habit, ovate and peltate leaves, but it can easily be distinguished by its glabrous upper leaf surface (vs. hispid all over), fleshy reddish bristles at the petiole apex (vs. without), bracts narrowly ovate and fringed by glandular hairs (vs. lanceolate and glabrous), male flowers pedicels with glandular hair (vs. glabrous), outer tepals ovate (vs. broadly obovate), inner tepals elliptic (vs. spathulate), anther obovate (vs. ellipsoid), female flowers pedicels with sparsely glandular hair (vs. glabrous), glandular hair on the outer surface (vs. glabrous), ovary 2-locular (vs. 3-locular) and styles 2 (vs. 3). This new species also shares similar characteristics with
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<taxonomicName lsidName="B. subperfoliata" pageId="0" pageNumber="187" rank="species" species="subperfoliata">
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<emphasis italics="true" pageId="0" pageNumber="187">B. subperfoliata</emphasis>
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</taxonomicName>
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Parish ex
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<bibRefCitation author="Kurz, S" journalOrPublisher="13). Science Press & Missouri Botanical Garden, Beijing & St. Louis, Missouri" pageId="0" pageNumber="187" refId="B23" refString="Kurz, S, 1873. New Burmese Plants. Journal of the Asiatic Society of Bengal, part 2, Natural History, Calcutta, 59-110." title="New Burmese Plants. Journal of the Asiatic Society of Bengal, part 2, Natural History, Calcutta, 59 - 110." year="1873">Kurz (1873</bibRefCitation>
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: 81) in tuberous habit and peltate leaves, but it can easily be distinguished by its ovary 2-locular (vs. 3-locular) and styles 2 (vs. 3).
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</paragraph>
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<caption doi="10.3897/phytokeys.138.46718.figure1" httpUri="https://binary.pensoft.net/fig/370294" pageId="0" pageNumber="187" start="Figure 1" startId="F1">
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<paragraph pageId="0" pageNumber="187">
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<emphasis bold="true" pageId="0" pageNumber="187">Figure 1.</emphasis>
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<taxonomicName authorityName="Y. H. Tan & H. B. Ding" authorityYear="2020" class="Magnoliopsida" family="Begoniaceae" genus="Begonia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Begonia laotica" order="Cucurbitales" pageId="0" pageNumber="187" phylum="Tracheophyta" rank="species" species="laotica">
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<emphasis italics="true" pageId="0" pageNumber="187">Begonia laotica</emphasis>
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</taxonomicName>
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Y.H.Tan & H.B.Ding, sp. nov.
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<emphasis bold="true" pageId="0" pageNumber="187">A</emphasis>
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habitat
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<emphasis bold="true" pageId="0" pageNumber="187">B</emphasis>
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leaf blade adaxially
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<emphasis bold="true" pageId="0" pageNumber="187">C</emphasis>
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leaf blade abaxially (showing fleshy reddish bristles at the petiole apex)
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<emphasis bold="true" pageId="0" pageNumber="187">D</emphasis>
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flowers (front view)
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<emphasis bold="true" pageId="0" pageNumber="187">E</emphasis>
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flowers (lateral view)
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<emphasis bold="true" pageId="0" pageNumber="187">F</emphasis>
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inflorescence
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<emphasis bold="true" pageId="0" pageNumber="187">G</emphasis>
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mature fruits
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<emphasis bold="true" pageId="0" pageNumber="187">H</emphasis>
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habit
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<emphasis bold="true" pageId="0" pageNumber="187">I</emphasis>
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staminate flower
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<emphasis bold="true" pageId="0" pageNumber="187">J</emphasis>
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pistillate flower (young)
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<emphasis bold="true" pageId="0" pageNumber="187">K</emphasis>
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stamens (lateral view)
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<emphasis bold="true" pageId="0" pageNumber="187">L</emphasis>
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stamens (front view)
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<emphasis bold="true" pageId="0" pageNumber="187">M</emphasis>
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cross section of ovary. Photographed by H.B. Ding.
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</paragraph>
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</caption>
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</subSubSection>
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</treatment>
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</document> |