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<document ID-DOI="http://dx.doi.org/10.3897/phytokeys.94.23248" ID-PMC="PMC5799780" ID-Pensoft-Pub="1314-2003-94-65" ID-Pensoft-UUID="14368A46FFCB7B42EA54FFC6D974FFCF" ID-PubMed="29416422" ID-Zenodo-Dep="1166373" ModsDocID="1314-2003-94-65" checkinTime="1517263984060" checkinUser="pensoft" docAuthor="Chen, Wen-Hong, Radbouchoom, Sirilak, Nguyen, Hieu Quang, Nguyen, Hiep Tien, Nguyen 4, Khang Sinh &amp; Shui, Yu-Min" docDate="2018" docId="C78C101DBA04516EACF7C8DBAD8C73FA" docLanguage="en" docName="PhytoKeys 94: 65-85" docOrigin="PhytoKeys 94" docPubDate="2018-01-29" docSource="http://dx.doi.org/10.3897/phytokeys.94.23248" docTitle="Begonia mollissima Y. M. Shui, H. Q. Nguyen &amp; W. H. Chen 2018, sp. nov." docType="treatment" docVersion="3" id="14368A46FFCB7B42EA54FFC6D974FFCF" lastPageNumber="75" masterDocId="14368A46FFCB7B42EA54FFC6D974FFCF" masterDocTitle="Seven new species of Begonia (Begoniaceae) in Northern Vietnam and Southern China" masterLastPageNumber="85" masterPageNumber="65" pageNumber="73" updateTime="1668142228494" updateUser="ExternalLinkService">
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo>
<mods:title>Seven new species of Begonia (Begoniaceae) in Northern Vietnam and Southern China</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Chen, Wen-Hong</mods:namePart>
<mods:affiliation>Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China &amp; Southeast Asia Biodiversity Research Institute, Chinese Academy of Sciences, Yezin, Nay Pyi Taw 05282, Myanmar</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Radbouchoom, Sirilak</mods:namePart>
<mods:affiliation>Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China &amp; University of Chinese Academy of Sciences, Beijing 100049, China</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Nguyen, Hieu Quang</mods:namePart>
<mods:affiliation>Center for Plant Conservation of Vietnam (CPC), Vietnam Union of Science and Technology Associations, 25 / 32 Lane 191, Lac Long Quan Rd., Hanoi, Vietnam</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Nguyen, Hiep Tien</mods:namePart>
<mods:affiliation>Center for Plant Conservation of Vietnam (CPC), Vietnam Union of Science and Technology Associations, 25 / 32 Lane 191, Lac Long Quan Rd., Hanoi, Vietnam</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Nguyen 4, Khang Sinh</mods:namePart>
<mods:affiliation>Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Shui, Yu-Min</mods:namePart>
<mods:affiliation>Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China &amp; Southeast Asia Biodiversity Research Institute, Chinese Academy of Sciences, Yezin, Nay Pyi Taw 05282, Myanmar</mods:affiliation>
<mods:nameIdentifier type="email">ymshui@mail.kib.ac.cn</mods:nameIdentifier>
</mods:name>
<mods:typeOfResource>text</mods:typeOfResource>
<mods:relatedItem type="host">
<mods:titleInfo>
<mods:title>PhytoKeys</mods:title>
</mods:titleInfo>
<mods:part>
<mods:date>2018</mods:date>
<mods:detail type="pubDate">
<mods:number>2018-01-29</mods:number>
</mods:detail>
<mods:detail type="volume">
<mods:number>94</mods:number>
</mods:detail>
<mods:extent unit="page">
<mods:start>65</mods:start>
<mods:end>85</mods:end>
</mods:extent>
</mods:part>
</mods:relatedItem>
<mods:location>
<mods:url>http://dx.doi.org/10.3897/phytokeys.94.23248</mods:url>
</mods:location>
<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">http://dx.doi.org/10.3897/phytokeys.94.23248</mods:identifier>
<mods:identifier type="Pensoft-Pub">1314-2003-94-65</mods:identifier>
<mods:identifier type="Pensoft-UUID">14368A46FFCB7B42EA54FFC6D974FFCF</mods:identifier>
<mods:identifier type="Zenodo-Dep">1166373</mods:identifier>
</mods:mods>
<treatment ID-GBIF-Taxon="182225427" LSID="urn:lsid:plazi:treatment:C78C101DBA04516EACF7C8DBAD8C73FA" httpUri="http://treatment.plazi.org/id/C78C101DBA04516EACF7C8DBAD8C73FA" lastPageId="10" lastPageNumber="75" pageId="8" pageNumber="73">
<subSubSection pageId="8" pageNumber="73" type="nomenclature">
<paragraph pageId="8" pageNumber="73">
<taxonomicName LSID="C78C101D-BA04-516E-ACF7-C8DBAD8C73FA" authority="Y. M. Shui, H. Q. Nguyen &amp; W. H. Chen" authorityName="Y. M. Shui, H. Q. Nguyen &amp; W. H. Chen" authorityYear="2018" class="Magnoliopsida" family="Begoniaceae" genus="Begonia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Begonia mollissima" order="Cucurbitales" pageId="8" pageNumber="73" phylum="Tracheophyta" rank="species" species="mollissima" status="sp. nov.">Begonia mollissima Y.M.Shui, H.Q.Nguyen &amp; W.H.Chen</taxonomicName>
<taxonomicNameLabel pageId="8" pageNumber="73">sp. nov.</taxonomicNameLabel>
<figureCitation captionStart="Figure 7" captionStartId="F7" captionText="Figure 7. Begonia mollissima Y. M. Shui, H. Q. Nguyen &amp; W. H. Chen A Habitat B Plant C View of adaxial leaf D Close-up of adaxial leaf E View of abaxial leaf F Close-up of abaxial leaf G Young leaf adaxially H Young leaf adaxially I Petiole J Stipule, adaxial view and abaxial view K Inflorescence L Staminate flower, face view, side view and dorsal view M Pistillate flower, face view, side view and dorsal view N Fruit, side view O Close-up of ovary cross section P Serial cross sections of ovary. (All photographs by Y. M. Shui)." figureDoi="10.3897/phytokeys.94.23248.figure7" httpUri="https://binary.pensoft.net/fig/182239" pageId="8" pageNumber="73">Fig. 7</figureCitation>
</paragraph>
</subSubSection>
<subSubSection pageId="9" pageNumber="74" type="reference_group">
<paragraph pageId="9" pageNumber="74">
<taxonomicName authority="Chen &amp; Radbouchoom &amp; Nguyen &amp; Nguyen &amp; Nguyen 4 &amp; Shui, 2018" authorityName="Chen &amp; Radbouchoom &amp; Nguyen &amp; Nguyen &amp; Nguyen 4 &amp; Shui" authorityYear="2018" class="Magnoliopsida" family="Begoniaceae" genus="Begonia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Begonia subsp. sect." order="Cucurbitales" pageId="9" pageNumber="74" phylum="Tracheophyta" rank="section" section="Coelocentrum" status="sp. nov.">
<pageBreakToken pageId="9" pageNumber="74" start="start">Begonia</pageBreakToken>
sect. Coelocentrum
</taxonomicName>
Irmsch.
</paragraph>
</subSubSection>
<subSubSection pageId="9" pageNumber="74" type="remarks">
<paragraph pageId="9" pageNumber="74">Remarks.</paragraph>
<paragraph pageId="9" pageNumber="74">
The new species is similar to
<taxonomicName authorityName="C. Y. Wu" authorityYear="1997" class="Magnoliopsida" family="Begoniaceae" genus="Begonia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Begonia guangxiensis" order="Cucurbitales" pageId="9" pageNumber="74" phylum="Tracheophyta" rank="species" species="guangxiensis">
<emphasis italics="true" pageId="9" pageNumber="74">Begonia guangxiensis</emphasis>
</taxonomicName>
T.C. Ku in the dense white villous hairs on the whole plants, differs from the latter in the shorter hairs of plants (2.1-2.4 mm vs. 3.4-4.0 mm), its one obtuse leaf lobe (vs. 3-4 acute leaf lobes in B.
<taxonomicName authorityName="C. Y. Wu" authorityYear="1997" class="Magnoliopsida" family="Begoniaceae" genus="Begonia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Begonia guangxiensis" order="Cucurbitales" pageId="9" pageNumber="74" phylum="Tracheophyta" rank="species" species="guangxiensis">Begonia guangxiensis</taxonomicName>
), subequal three wings of the fruit (vs. unequal three wings), narrowly semi-lunar major wings (vs. broadly square major wings).
</paragraph>
</subSubSection>
<subSubSection pageId="9" pageNumber="74" type="materials_examined">
<paragraph pageId="9" pageNumber="74">
<typeStatus>Type</typeStatus>
.
</paragraph>
<paragraph pageId="9" pageNumber="74">
<materialsCitation collectingDate="2016-04-18" collectorName="Y. M. Shui, W. H. Chen, C. Liu, H. Q. Nguyen, H. T. Nguyen, N. Q. Chuong" country="VIETNAM" elevation="235" latitude="22.415556" location="Ba Be National Park" longLatPrecision="21" longitude="105.630005" municipality="Cho Ra county" specimenCount="1" stateProvince="Bac Kan Province" typeStatus="holotype">
<collectingCountry name="Vietnam">VIETNAM</collectingCountry>
.
<collectingRegion country="Vietnam" name="Bac Kan">Bac Kan Province</collectingRegion>
,
<collectingMunicipality>Cho Ra county</collectingMunicipality>
,
<location LSID="urn:lsid:plazi:treatment:C78C101DBA04516EACF7C8DBAD8C73FA:1C4A9951AF85930DCEF555DBC6B38A6D" country="VIETNAM" latitude="22.415556" longLatPrecision="21" longitude="105.630005" municipality="Cho Ra county" name="Ba Be National Park" stateProvince="Bac Kan Province">Ba Be National Park</location>
,
<geoCoordinate degrees="22" direction="north" minutes="24" orientation="latitude" precision="15" seconds="56" value="22.415556">22°24'56&quot;N</geoCoordinate>
,
<geoCoordinate degrees="105" direction="east" minutes="37" orientation="longitude" precision="15" seconds="48" value="105.630005">105°37'48&quot;E</geoCoordinate>
,
<elevation metricMagnitude="2" metricUnit="m" metricValue="2.35" unit="m" value="235.0">
<quantity metricMagnitude="2" metricUnit="m" metricValue="2.35" unit="m" value="235.0">235 m</quantity>
a.s.l.
</elevation>
,
<collectingDate value="2016-04-18">18 April 2016</collectingDate>
,
<emphasis italics="true" pageId="9" pageNumber="74">
<collectorName>Y.M. Shui</collectorName>
,
<collectorName>W.H. Chen</collectorName>
,
<collectorName>C. Liu</collectorName>
,
<collectorName>H.Q. Nguyen</collectorName>
,
<collectorName>H.T. Nguyen</collectorName>
,
<collectorName>N.Q. Chuong</collectorName>
CK1183
</emphasis>
(
<typeStatus>holotype</typeStatus>
, KUN!; isotype, CPC!)
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection pageId="10" pageNumber="75" type="herb, rhizomatous">
<paragraph pageId="10" pageNumber="75">
<pageBreakToken pageId="10" pageNumber="75" start="start">Herb</pageBreakToken>
, rhizomatous.
</paragraph>
<paragraph pageId="10" pageNumber="75">
Rhizome, densely white villous, 2-3 cm long, 0.7-1 cm in diam. Stipule green, 1.5-2
<normalizedToken originalValue="×">x</normalizedToken>
1-1.5 cm, widely ovate, apex acute to obtuse, margin ciliate. Leaves: petiole erect, densely white villous, 6-13 cm long, 1-3 mm in diam.; blade green, asymmetric, widely ovate, 8.5-18
<normalizedToken originalValue="×">x</normalizedToken>
7-12 cm, rugose, usually with one obtuse lobe; base cordate, apex acuminate or acute, margin slightly denticulate, ciliate; adaxially green, densely tubercular-based setose, abaxially pale green, reddish when young, densely villous on veins; venation palmate, 5-6 primary veins, 2 or 3 secondary veins brunching dichotomous, tertiary veins reticulate. Inflorescence: dichasial cyme, peduncle 12-15 cm long, villous; bracts not seen. Staminate flower: pedicels 0.5-1 cm long; tepals 4; outer tepals 2, broadly ovate, 7-11
<normalizedToken originalValue="×">x</normalizedToken>
6-8 mm, apex rounded to acute, margin entire sometimes serrate and ciliate; inner tepals 2, oblanceolate, 5-7
<normalizedToken originalValue="×">x</normalizedToken>
1.8-2 mm, apex obtuse to acute, margin entire; androecium actinomorphic, stamens numerous; filaments longer than anthers, slightly fused at base; anthers yellow, 1-1.2 mm long, shorter than filaments, with two longitudinal slits. Pistillate flower: pedicel 1.2-2 cm long; tepals 2, white or pinkish, widely obovate to orbicular, 0.5-1
<normalizedToken originalValue="×">x</normalizedToken>
0.5-1 cm, apex acute, margin entire; styles 2-3, free; stigmas bilobed with twisted bands; ovary green or pinkish, trigonous ellipsoid, 1-1.5 cm long, 0.5-1 cm in diam. (wings excluded), white or red villous, 1-loculed; placentation parietal, placentae 3, 2-branched. Capsule pale green to pink, trigonous-ellipsoid, 1-1.5 cm long, 0.5-1 cm in diam. (wings excluded), villous, brownish when dried, 3-winged unequally; abaxial wing lunate, 0.9-1.2
<normalizedToken originalValue="×">x</normalizedToken>
0.3-0.7 mm; lateral wings lunate, 0.9-1.2
<normalizedToken originalValue="×">x</normalizedToken>
0.2-0.5 cm. Seeds oblong, ca. 0.2 mm long.
</paragraph>
</subSubSection>
<subSubSection pageId="10" pageNumber="75" type="phenology">
<paragraph pageId="10" pageNumber="75">Phenology.</paragraph>
<paragraph pageId="10" pageNumber="75">Flowering in March-May, fruiting in April-June.</paragraph>
</subSubSection>
<subSubSection pageId="10" pageNumber="75" type="etymology">
<paragraph pageId="10" pageNumber="75">Etymology.</paragraph>
<paragraph pageId="10" pageNumber="75">The epithet refers to the dense villous trichomes of the new species.</paragraph>
</subSubSection>
<subSubSection pageId="10" pageNumber="75" type="habitat">
<paragraph pageId="10" pageNumber="75">Habitat.</paragraph>
<paragraph pageId="10" pageNumber="75">The species only grows on cliffs in limestone forests.</paragraph>
</subSubSection>
<subSubSection pageId="10" pageNumber="75" type="distribution">
<paragraph pageId="10" pageNumber="75">Distribution.</paragraph>
<paragraph pageId="10" pageNumber="75">The species occurs exclusively in Ba Be National Park (Cho Ra county) of Bac Kan Province in Vietnam.</paragraph>
</subSubSection>
<subSubSection pageId="10" pageNumber="75" type="notes">
<paragraph pageId="10" pageNumber="75">Note.</paragraph>
<paragraph pageId="10" pageNumber="75">
In
<taxonomicName class="Magnoliopsida" family="Begoniaceae" genus="Begonia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Begonia subsp. sect." order="Cucurbitales" pageId="10" pageNumber="75" phylum="Tracheophyta" rank="section" section="Coelocentrum">Begonia sect. Coelocentrum</taxonomicName>
, the new species is similar as
<taxonomicName authorityName="C. Y. Wu" authorityYear="1997" class="Magnoliopsida" family="Begoniaceae" genus="Begonia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Begonia guangxiensis" order="Cucurbitales" pageId="10" pageNumber="75" phylum="Tracheophyta" rank="species" species="guangxiensis">
<emphasis italics="true" pageId="10" pageNumber="75">Begonia guangxiensis</emphasis>
</taxonomicName>
in the dense hairy habit, mainly differing in the dense tubercular-based pubes on the abaxial surface of leaves (
<emphasis italics="true" pageId="10" pageNumber="75">vs.</emphasis>
villous trichomes in the latter species) and subequal wings (
<emphasis italics="true" pageId="10" pageNumber="75">vs.</emphasis>
unequal) (
<bibRefCitation author="Wu, CY" journalOrPublisher="Acta Phytotaxonomica Sinica" pageId="13" pageNumber="78" pagination="43 - 56" refId="B27" refString="Wu, CY, Ku, TC, 1997. New taxa of the Begonia L. (Begoniaceae) from China (Cont.). Acta Phytotaxonomica Sinica 35 (1): 43 - 56" title="New taxa of the Begonia L. (Begoniaceae) from China (Cont.)." volume="35" year="1997">Wu and Ku 1997</bibRefCitation>
;
<bibRefCitation author="Shui, Y-M" journalOrPublisher="Yunnan Science and Technology Press, Kunming" pageId="13" pageNumber="78" refId="B21" refString="Shui, Y-M, Chen, W-H, 2017. Begonia of China. Yunnan Science and Technology Press, Kunming" title="Begonia of China." year="2017">Shui and Chen 2017</bibRefCitation>
). It is also similar as
<taxonomicName lsidName="B. calciphila" pageId="10" pageNumber="75" rank="species" species="calciphila">
<emphasis italics="true" pageId="10" pageNumber="75">B. calciphila</emphasis>
</taxonomicName>
C.-I Peng in the shape and trichomes of leaves, but differs in 0.5-1.2 cm long stout inter-nodes (
<emphasis italics="true" pageId="10" pageNumber="75">vs.</emphasis>
1.5-4.5 cm long slender inter-nodes) and hairy flowers and fruits (
<emphasis italics="true" pageId="10" pageNumber="75">vs.</emphasis>
glabrous in the latter species) (
<bibRefCitation author="Peng, CI" journalOrPublisher="Phytotaxa" pageId="13" pageNumber="78" pagination="083 - 099" refId="B19" refString="Peng, CI, Yang, HA, Kono, Y, Jung, MJ, Nguyen, TH, 2015b. Four new species of Begonia (Begoniaceae) from Vietnam: B. abbreviata, B. calciphila, B. sphenantheroides and B. tamdaoensis. Phytotaxa 222 (2): 083 - 099" title="Four new species of Begonia (Begoniaceae) from Vietnam: B. abbreviata, B. calciphila, B. sphenantheroides and B. tamdaoensis." volume="222" year="2015 b">Peng et al. 2015b</bibRefCitation>
). In Bac Kan Province, Vietnam, there are four new species already described, viz.
<taxonomicName lsidName="B. regosula" pageId="10" pageNumber="75" rank="species" species="regosula">
<emphasis italics="true" pageId="10" pageNumber="75">B. regosula</emphasis>
</taxonomicName>
Aver.,
<taxonomicName lsidName="B. babeana" pageId="10" pageNumber="75" rank="species" species="babeana">
<emphasis italics="true" pageId="10" pageNumber="75">B. babeana</emphasis>
</taxonomicName>
Aver. &amp; H.Q. Nguyen (
<bibRefCitation author="Averyanov, LV" journalOrPublisher="Turczaninowia" pageId="12" pageNumber="77" pagination="5 - 32" refId="B2" refString="Averyanov, LV, Nguyen, HQ, 2012. Eleven new species of Begonia L. (Begoniaceae) from Laos and Vietnam. Turczaninowia 15 (2): 5 - 32" title="Eleven new species of Begonia L. (Begoniaceae) from Laos and Vietnam." volume="15" year="2012">Averyanov and Nguyen 2012</bibRefCitation>
) and two more new species described in this paper.
</paragraph>
<caption ID-Zenodo-Dep="1166744" doi="10.3897/phytokeys.94.23248.figure7" httpUri="https://binary.pensoft.net/fig/182239" pageId="10" pageNumber="75" start="Figure 7" startId="F7">
<paragraph pageId="10" pageNumber="75">
<emphasis bold="true" pageId="10" pageNumber="75">Figure 7.</emphasis>
<taxonomicName authorityName="Y. M. Shui, H. Q. Nguyen &amp; W. H. Chen" authorityYear="2018" class="Magnoliopsida" family="Begoniaceae" genus="Begonia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Begonia mollissima" order="Cucurbitales" pageId="10" pageNumber="75" phylum="Tracheophyta" rank="species" species="mollissima">
<emphasis italics="true" pageId="10" pageNumber="75">Begonia mollissima</emphasis>
</taxonomicName>
Y.M. Shui, H.Q. Nguyen &amp; W.H. Chen
<emphasis bold="true" pageId="10" pageNumber="75">A</emphasis>
Habitat
<emphasis bold="true" pageId="10" pageNumber="75">B</emphasis>
Plant
<emphasis bold="true" pageId="10" pageNumber="75">C</emphasis>
View of adaxial leaf
<emphasis bold="true" pageId="10" pageNumber="75">D</emphasis>
Close-up of adaxial leaf
<emphasis bold="true" pageId="10" pageNumber="75">E</emphasis>
View of abaxial leaf
<emphasis bold="true" pageId="10" pageNumber="75">F</emphasis>
Close-up of abaxial leaf
<emphasis bold="true" pageId="10" pageNumber="75">G</emphasis>
Young leaf adaxially
<emphasis bold="true" pageId="10" pageNumber="75">H</emphasis>
Young leaf adaxially
<emphasis bold="true" pageId="10" pageNumber="75">I</emphasis>
Petiole
<emphasis bold="true" pageId="10" pageNumber="75">J</emphasis>
Stipule, adaxial view and abaxial view
<emphasis bold="true" pageId="10" pageNumber="75">K</emphasis>
Inflorescence
<emphasis bold="true" pageId="10" pageNumber="75">L</emphasis>
Staminate flower, face view, side view and dorsal view
<emphasis bold="true" pageId="10" pageNumber="75">M</emphasis>
Pistillate flower, face view, side view and dorsal view
<emphasis bold="true" pageId="10" pageNumber="75">N</emphasis>
Fruit, side view
<emphasis bold="true" pageId="10" pageNumber="75">O</emphasis>
Close-up of ovary cross section
<emphasis bold="true" pageId="10" pageNumber="75">P</emphasis>
Serial cross sections of ovary. (All photographs by Y.M. Shui).
</paragraph>
</caption>
</subSubSection>
</treatment>
</document>