treatments-xml/data/48/46/95/484695B60C88517685672ACE57CF5F55.xml

<document ID-DOI="http://dx.doi.org/10.3897/phytokeys.218.96511" ID-Pensoft-Pub="1314-2003-218-19" ID-Pensoft-UUID="DEB91E8DECE35693ACABF09AF075FC3D" ModsDocID="1314-2003-218-19" checkinTime="1673408696399" checkinUser="pensoft" docAuthor="Nguyen, Cuong Huu, Van Phung, Khoa, Sinh Nguyen, Khang, Averyanov, Leonid V., Truong, Vuong Ba, Tran, Chu Van, Cao, Hai Xuan, Chu, Quan Ngoc, Vu, Hau Bich Thi &amp; Pham, Thoa Kim Thi" docDate="2023" docId="484695B60C88517685672ACE57CF5F55" docLanguage="en" docName="PhytoKeys 218: 19-27" docOrigin="PhytoKeys 218" docPubDate="2023-01-10" docSource="http://dx.doi.org/10.3897/phytokeys.218.96511" docTitle="Raphiocarpus taygiangensis C. H. Nguyen, K. S. Nguyen &amp; Aver. 2023, sp. nov." docType="treatment" docVersion="2" id="DEB91E8DECE35693ACABF09AF075FC3D" lastPageNumber="19" masterDocId="DEB91E8DECE35693ACABF09AF075FC3D" masterDocTitle="Raphiocarpus taygiangensis (Gesneriaceae), a new species from central Vietnam" masterLastPageNumber="27" masterPageNumber="19" pageNumber="19" updateTime="1673408996933" updateUser="ExternalLinkService">
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo>
<mods:title>Raphiocarpus taygiangensis (Gesneriaceae), a new species from central Vietnam</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Nguyen, Cuong Huu</mods:namePart>
<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0003-2281-741X</mods:nameIdentifier>
<mods:affiliation>Vietnam National University of Forestry, Xuan Mai, Chuong My, Ha Noi, Vietnam</mods:affiliation>
<mods:nameIdentifier type="email">nguyenhuucuong.tvr@gmail.com</mods:nameIdentifier>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Van Phung, Khoa</mods:namePart>
<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0002-9133-166X</mods:nameIdentifier>
<mods:affiliation>Vietnam National University of Forestry, Xuan Mai, Chuong My, Ha Noi, Vietnam</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Sinh Nguyen, Khang</mods:namePart>
<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0001-5171-4140</mods:nameIdentifier>
<mods:affiliation>Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Nghia Do, Cau Giay, Hanoi, Vietnam</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Averyanov, Leonid V.</mods:namePart>
<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0001-8031-2925</mods:nameIdentifier>
<mods:affiliation>Komarov Botanical Institute Russian Academy of Sciences, Prof. Popov str., 2, St. Petersburg, 197376, Russia</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Truong, Vuong Ba</mods:namePart>
<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0003-3452-8455</mods:nameIdentifier>
<mods:affiliation>Institute of Tropical Biology Vietnam Academy of Science and Technology, 85 Tran Quoc Toan, District 3, Ho Chi Minh City, Vietnam</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Tran, Chu Van</mods:namePart>
<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0001-7020-4146</mods:nameIdentifier>
<mods:affiliation>Vietnam National University of Forestry, Xuan Mai, Chuong My, Ha Noi, Vietnam</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Cao, Hai Xuan</mods:namePart>
<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0002-9396-2879</mods:nameIdentifier>
<mods:affiliation>Vietnam National University of Forestry, Xuan Mai, Chuong My, Ha Noi, Vietnam</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Chu, Quan Ngoc</mods:namePart>
<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0003-0698-1738</mods:nameIdentifier>
<mods:affiliation>Ba Vi National Park, Tan Linh, Ba Vi, Hanoi, Vietnam</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Vu, Hau Bich Thi</mods:namePart>
<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0002-4160-6290</mods:nameIdentifier>
<mods:affiliation>Department of agriculture and rural development, Hai Chau District, Danang City, Vietnam</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Pham, Thoa Kim Thi</mods:namePart>
<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0003-4988-7864</mods:nameIdentifier>
<mods:affiliation>The University of Danang - University of Science and Technology, 54 Nguyen Luong Bang str., Lien Chieu District, Danang City, Vietnam</mods:affiliation>
<mods:nameIdentifier type="email">ptkthoa@dut.udn.vn</mods:nameIdentifier>
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<mods:title>PhytoKeys</mods:title>
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<mods:part>
<mods:date>2023</mods:date>
<mods:detail type="pubDate">
<mods:number>2023-01-10</mods:number>
</mods:detail>
<mods:detail type="volume">
<mods:number>218</mods:number>
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<mods:extent unit="page">
<mods:start>19</mods:start>
<mods:end>27</mods:end>
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<mods:url>http://dx.doi.org/10.3897/phytokeys.218.96511</mods:url>
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<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">http://dx.doi.org/10.3897/phytokeys.218.96511</mods:identifier>
<mods:identifier type="Pensoft-Pub">1314-2003-218-19</mods:identifier>
<mods:identifier type="Pensoft-UUID">DEB91E8DECE35693ACABF09AF075FC3D</mods:identifier>
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<treatment LSID="urn:lsid:plazi:treatment:484695B60C88517685672ACE57CF5F55" httpUri="http://treatment.plazi.org/id/484695B60C88517685672ACE57CF5F55" lastPageNumber="19" pageId="0" pageNumber="19">
<subSubSection pageId="0" pageNumber="19" type="nomenclature">
<paragraph pageId="0" pageNumber="19">
<taxonomicName LSID="484695B6-0C88-5176-8567-2ACE57CF5F55" authority="C. H. Nguyen, K. S. Nguyen &amp; Aver." authorityName="C. H. Nguyen, K. S. Nguyen &amp; Aver." authorityYear="2023" class="Magnoliopsida" family="Gesneriaceae" genus="Raphiocarpus" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Raphiocarpus taygiangensis" order="Lamiales" pageId="0" pageNumber="19" phylum="Tracheophyta" rank="species" species="taygiangensis" status="sp. nov.">Raphiocarpus taygiangensis C.H.Nguyen, K.S.Nguyen &amp; Aver.</taxonomicName>
<taxonomicNameLabel pageId="0" pageNumber="19">sp. nov.</taxonomicNameLabel>
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="19" type="description">
<paragraph pageId="0" pageNumber="19">
<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Raphiocarpus taygiangensis C. H. Nguyen, K. S. Nguyen &amp; Aver., sp. nov. A natural habitat B-D flowering plant in natural habitat E leaves F leaf margin G inflorescences H flowers, views from different sides I flower, frontal views J sagittal section of corolla showing inner surface with stamens and staminodes K flower tube inside and outside L, M stamens N staminode O calyx lobes P pistil, base of pistil and its apex with stigma Q young fruit. Photos by Cuong Huu Nguyen and Khang Sinh Nguyen, correction and design by Cuong Huu Nguyen." figureDoi="10.3897/phytokeys.218.96511.figure1" httpUri="https://binary.pensoft.net/fig/793589" pageId="0" pageNumber="19">Figs 1</figureCitation>
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Raphiocarpus taygiangensis C. H. Nguyen, K. S. Nguyen &amp; Aver., sp. nov. holotype specimen, Cuong et al., CKH 2022042068 (VNF)." figureDoi="10.3897/phytokeys.218.96511.figure2" httpUri="https://binary.pensoft.net/fig/793590" pageId="0" pageNumber="19">, 2</figureCitation>
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Raphiocarpus taygiangensis C. H. Nguyen, K. S. Nguyen &amp; Aver., sp. nov. A flower front view B habitat C lateral view of flower and fruit; Raphiocarpus axillaris D. J. Middleton, sp. nov. D flower front view E habitat F lateral view of flower and fruit. Photos by Ly Van Nguyen (D-F), Cuong Huu Nguyen and Khang Sinh Nguyen, correction and design by Cuong Huu Nguyen." figureDoi="10.3897/phytokeys.218.96511.figure3" httpUri="https://binary.pensoft.net/fig/793591" pageId="0" pageNumber="19">, 3</figureCitation>
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="19" type="diagnosis">
<paragraph pageId="0" pageNumber="19">Diagnosis.</paragraph>
<paragraph pageId="0" pageNumber="19">
The new species differs from closest 
<taxonomicName class="Magnoliopsida" family="Gesneriaceae" kingdom="Plantae" lsidName="R. axillaris" order="Lamiales" pageId="0" pageNumber="19" phylum="Tracheophyta" rank="species" species="axillaris">
<emphasis italics="true" pageId="0" pageNumber="19">R. axillaris</emphasis>
</taxonomicName>
in serrulate leaves, purple spots and glandular hairs on abaxial surface of corolla, purple longitudinal stripes on median lobe of lower lip, and pubescent filaments stamens and pistil (Table 
<tableCitation captionStart="Table 1" captionStartId="T1" captionText="Table 1. Most significant morphological discriminative characters of Raphiocarpus taygiangensis and R. axillaris." httpUri="http://table.plazi.org/id/DDE847C90FC4C9ECA10E839B88B5D104" pageId="0" pageNumber="19" tableUuid="DDE847C90FC4C9ECA10E839B88B5D104">1</tableCitation>
).
</paragraph>
<caption ID-Table-UUID="DDE847C90FC4C9ECA10E839B88B5D104" httpUri="http://table.plazi.org/id/DDE847C90FC4C9ECA10E839B88B5D104" pageId="0" pageNumber="19" start="Table 1" startId="T1">
<paragraph pageId="0" pageNumber="19">
<emphasis bold="true" pageId="0" pageNumber="19">Table 1.</emphasis>
Most significant morphological discriminative characters of 
<taxonomicName class="Magnoliopsida" family="Gesneriaceae" genus="Raphiocarpus" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Raphiocarpus taygiangensis" order="Lamiales" pageId="0" pageNumber="19" phylum="Tracheophyta" rank="species" species="taygiangensis">
<emphasis italics="true" pageId="0" pageNumber="19">Raphiocarpus taygiangensis</emphasis>
</taxonomicName>
and 
<taxonomicName class="Magnoliopsida" family="Gesneriaceae" kingdom="Plantae" lsidName="R. axillaris" order="Lamiales" pageId="0" pageNumber="19" phylum="Tracheophyta" rank="species" species="axillaris">
<emphasis italics="true" pageId="0" pageNumber="19">R. axillaris</emphasis>
</taxonomicName>
.
</paragraph>
</caption>
<paragraph pageId="0" pageNumber="19">
<table pageId="0" pageNumber="19">
<tr pageId="0" pageNumber="19">
<th colspan="1" pageId="0" pageNumber="19" rowspan="1">Characters</th>
<th colspan="1" pageId="0" pageNumber="19" rowspan="1">
<taxonomicName class="Magnoliopsida" family="Gesneriaceae" kingdom="Plantae" lsidName="R. taygiangensis" order="Lamiales" pageId="0" pageNumber="19" phylum="Tracheophyta" rank="species" species="taygiangensis">
<emphasis italics="true" pageId="0" pageNumber="19">R. taygiangensis</emphasis>
</taxonomicName>
</th>
<th colspan="1" pageId="0" pageNumber="19" rowspan="1">
<taxonomicName class="Magnoliopsida" family="Gesneriaceae" kingdom="Plantae" lsidName="R. axillaris" order="Lamiales" pageId="0" pageNumber="19" phylum="Tracheophyta" rank="species" species="axillaris">
<emphasis italics="true" pageId="0" pageNumber="19">R. axillaris</emphasis>
</taxonomicName>
</th>
</tr>
<tr pageId="0" pageNumber="19">
<td colspan="1" pageId="0" pageNumber="19" rowspan="1">Stems</td>
<td colspan="1" pageId="0" pageNumber="19" rowspan="1">to 3 m long, ascending to 1 m tall</td>
<td colspan="1" pageId="0" pageNumber="19" rowspan="1">to 0.7 cm long and tall</td>
</tr>
<tr pageId="0" pageNumber="19">
<td colspan="1" pageId="0" pageNumber="19" rowspan="1">Leaf margin</td>
<td colspan="1" pageId="0" pageNumber="19" rowspan="1">serrulate</td>
<td colspan="1" pageId="0" pageNumber="19" rowspan="1">Entire</td>
</tr>
<tr pageId="0" pageNumber="19">
<td colspan="1" pageId="0" pageNumber="19" rowspan="1">Corolla</td>
<td colspan="1" pageId="0" pageNumber="19" rowspan="1">white with purple tint to purple, inside with purple lines; glandular-hairy inside</td>
<td colspan="1" pageId="0" pageNumber="19" rowspan="1">white to pale pink; glabrous inside</td>
</tr>
<tr pageId="0" pageNumber="19">
<td colspan="1" pageId="0" pageNumber="19" rowspan="1">Stamens</td>
<td colspan="1" pageId="0" pageNumber="19" rowspan="1">4-5; filaments puberulent</td>
<td colspan="1" pageId="0" pageNumber="19" rowspan="1">4; filaments, glabrous</td>
</tr>
<tr pageId="0" pageNumber="19">
<td colspan="1" pageId="0" pageNumber="19" rowspan="1">Staminodes</td>
<td colspan="1" pageId="0" pageNumber="19" rowspan="1">hooked</td>
<td colspan="1" pageId="0" pageNumber="19" rowspan="1">clavate</td>
</tr>
<tr pageId="0" pageNumber="19">
<td colspan="1" pageId="0" pageNumber="19" rowspan="1">Pistil</td>
<td colspan="1" pageId="0" pageNumber="19" rowspan="1">puberulent</td>
<td colspan="1" pageId="0" pageNumber="19" rowspan="1">glabrous</td>
</tr>
</table>
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="19" type="materials_examined">
<paragraph pageId="0" pageNumber="19">
<typeStatus>Type</typeStatus>
.
</paragraph>
<paragraph pageId="0" pageNumber="19">
<materialsCitation collectingDate="2022-04-20" collectorName="Tay Giang District, A, C. H. Nguyen, K. S. Nguyen, H. X. Cao" country="Vietnam" elevation="1270" latitude="15.815833" location="Xan Village" longLatPrecision="21" longitude="107.32972" municipality="Tay Giang District" specimenCount="1" stateProvince="Quang Nam Province" typeStatus="holotype">
<collectingCountry name="Vietnam">Vietnam</collectingCountry>
. 
<collectingRegion country="Vietnam" name="Quang Nam">Quang Nam Province</collectingRegion>
, 
<collectorName>
<collectingMunicipality>Tay Giang District</collectingMunicipality>
, A
</collectorName>
<location LSID="urn:lsid:plazi:treatment:484695B60C88517685672ACE57CF5F55:DD92B1968732583C2CB7A236E8A9D428" country="Vietnam" latitude="15.815833" longLatPrecision="21" longitude="107.32972" municipality="Tay Giang District" name="Xan Village" stateProvince="Quang Nam Province">Xan Village</location>
, primary evergreen broad-leaved forest, around point 
<geoCoordinate degrees="15" direction="north" minutes="48" orientation="latitude" precision="15" seconds="57" value="15.815833">15°48'57&quot;N</geoCoordinate>
, 
<geoCoordinate degrees="107" direction="east" minutes="19" orientation="longitude" precision="15" seconds="47" value="107.32972">107°19'47&quot;E</geoCoordinate>
, 
<elevation metricMagnitude="3" metricUnit="m" metricValue="1.27" unit="m" value="1270.0">
elevation 
<quantity metricMagnitude="3" metricUnit="m" metricValue="1.27" unit="m" value="1270.0">1270 m</quantity>
</elevation>
, 
<collectingDate value="2022-04-20">20 April 2022</collectingDate>
, 
<emphasis italics="true" pageId="0" pageNumber="19">
<collectorName>C.H. Nguyen</collectorName>
</emphasis>
, 
<emphasis italics="true" pageId="0" pageNumber="19">
<collectorName>K.S. Nguyen</collectorName>
</emphasis>
, 
<emphasis italics="true" pageId="0" pageNumber="19">
<collectorName>H.X. Cao</collectorName>
</emphasis>
, 
<emphasis italics="true" pageId="0" pageNumber="19">CKH 2022042068</emphasis>
(
<typeStatus>holotype</typeStatus>
VNF; isotypes HN, LE)
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="19" type="description">
<paragraph pageId="0" pageNumber="19">Description.</paragraph>
<paragraph pageId="0" pageNumber="19">
Perennial herb with stem to ca. 3 m long ascending to ca.1 m tall. Stem branching, velutinous when young, glabrescent with age. Leaves opposite, equal to unequal in size; petioles 1.5-3.5 cm long, densely hirsute with appressed hairs; leaf blade symmetrically elliptic, 8-16 
<normalizedToken originalValue="×">x</normalizedToken>
3.4-6.2 cm, 2.3-2.6 times as long as wide, base cuneate, apex acute to acuminate, hirsute with appressed hairs on both sides, more densely on veins, serrulate along the margin, eucamptodromous venation with 8-14 pairs of secondary veins, tertiary venation ramified. Inflorescences arising in axils of lower leaves and in leaf scar axils, 1- or 2-flowered, up to 3 inflorescences in an individual axil, 5-6 cm long (including flower); all axes with 0,5-1mm long glandular hairs; peduncle 10-18 mm long; bracts narrowly elliptic, 4-5 
<normalizedToken originalValue="×">x</normalizedToken>
0.8-1 mm long, greenish, with 0,5-1mm long glandular hairs; flowers spreading almost horizontally to slightly pendulous; pedicels 10-12 mm long. Calyx of 5 lobes free from the base, lobes 6-7 
<normalizedToken originalValue="×">x</normalizedToken>
1.3-1.5 mm long, with long glandular hairs outside, glabrous inside. Corolla infundibular, outside white with purple tint to purple, inside white with purple on adaxial lip and purple longitudinal lines on median lobe of abaxial lip, 4.2-4.8 cm long, sparsely covered with long glandular hairs outside, inside with glandular short hairs at apex of adaxial lip, with two to three prominent ridges ventrally at the base of throat, limb distinctly two-lipped; tube 3.5-3.9 cm long, 8-10 mm wide, swelling at middle and narrowing at base, the distal part broadening towards throat; adaxial lip 2-lobed, lobes subequal, half round, 5-6 mm long, 5-6 
<normalizedToken originalValue="×">x</normalizedToken>
7-9 mm wide, sinus 4-5.5 mm deep; adaxial lip 3(4)-lobed, lobes unequal, 14-16.5 mm long, lateral lobes 6-8 
<normalizedToken originalValue="×">x</normalizedToken>
7-9 mm wide, middle lobe 7-9.2 
<normalizedToken originalValue="×">x</normalizedToken>
4.8-6.1 mm wide. Stamens 4(5), in 2 pairs, each pair adnate at the anthers, filaments filiform, distally shortly glandular puberulent, geniculate near the middle; adaxial pair adnate to 14-16 mm above the corolla base, 9-11 mm long, 1 mm in diameter, anthers 0.8-1 
<normalizedToken originalValue="×">x</normalizedToken>
1.1-1.3 mm long; abaxial pair, adnate at c.14 mm above the corolla base, 6-8 mm long, 0.8 mm in diameter; staminode 1, slightly hooked, 3-4 mm long. Disc circular, light lemon yellow, 1-1.2 mm high, margin repand, glabrous. Pistil 2-2.2 cm long, puberulent throughout; ovary 12-13 mm long; style 6-7 mm long; stigma c. 2 mm, 2-lobed. Capsule green when young, bent at the base, narrowly fisiform, pubescent, dehiscing adaxially, straight, not twisted.
</paragraph>
<caption doi="10.3897/phytokeys.218.96511.figure1" httpUri="https://binary.pensoft.net/fig/793589" pageId="0" pageNumber="19" start="Figure 1" startId="F1">
<paragraph pageId="0" pageNumber="19">
<emphasis bold="true" pageId="0" pageNumber="19">Figure 1.</emphasis>
<taxonomicName class="Magnoliopsida" family="Gesneriaceae" genus="Raphiocarpus" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Raphiocarpus taygiangensis" order="Lamiales" pageId="0" pageNumber="19" phylum="Tracheophyta" rank="species" species="taygiangensis">
<emphasis italics="true" pageId="0" pageNumber="19">Raphiocarpus taygiangensis</emphasis>
</taxonomicName>
C.H.Nguyen, K.S.Nguyen &amp; Aver., sp. nov. 
<emphasis bold="true" pageId="0" pageNumber="19">A</emphasis>
natural habitat 
<emphasis bold="true" pageId="0" pageNumber="19">B-D</emphasis>
flowering plant in natural habitat 
<emphasis bold="true" pageId="0" pageNumber="19">E</emphasis>
leaves 
<emphasis bold="true" pageId="0" pageNumber="19">F</emphasis>
leaf margin 
<emphasis bold="true" pageId="0" pageNumber="19">G</emphasis>
inflorescences 
<emphasis bold="true" pageId="0" pageNumber="19">H</emphasis>
flowers, views from different sides 
<emphasis bold="true" pageId="0" pageNumber="19">I</emphasis>
flower, frontal views 
<emphasis bold="true" pageId="0" pageNumber="19">J</emphasis>
sagittal section of corolla showing inner surface with stamens and staminodes 
<emphasis bold="true" pageId="0" pageNumber="19">K</emphasis>
flower tube inside and outside 
<emphasis bold="true" pageId="0" pageNumber="19">L, M</emphasis>
stamens 
<emphasis bold="true" pageId="0" pageNumber="19">N</emphasis>
staminode 
<emphasis bold="true" pageId="0" pageNumber="19">O</emphasis>
calyx lobes 
<emphasis bold="true" pageId="0" pageNumber="19">P</emphasis>
pistil, base of pistil and its apex with stigma 
<emphasis bold="true" pageId="0" pageNumber="19">Q</emphasis>
young fruit. Photos by Cuong Huu Nguyen and Khang Sinh Nguyen, correction and design by Cuong Huu Nguyen.
</paragraph>
</caption>
</subSubSection>
<subSubSection pageId="0" pageNumber="19" type="distribution">
<paragraph pageId="0" pageNumber="19">Distribution and habitat.</paragraph>
<paragraph pageId="0" pageNumber="19">
The new species is only known from A Xan Commune, Tay Giang District, Quang Nam Province in central Vietnam. 
<taxonomicName class="Magnoliopsida" family="Gesneriaceae" genus="Raphiocarpus" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Raphiocarpus taygiangensis" order="Lamiales" pageId="0" pageNumber="19" phylum="Tracheophyta" rank="species" species="taygiangensis">
<emphasis italics="true" pageId="0" pageNumber="19">Raphiocarpus taygiangensis</emphasis>
</taxonomicName>
usually grows in moist shady places near waterfalls, along streams and occasionally on the sandstone slopes covered by evergreen broad-leaved forests at elevations of 1200-1300 m a.s.l. As common plants in habitats of the new species have been recorded 
<taxonomicName class="Magnoliopsida" family="Gesneriaceae" genus="Aeschynanthus" kingdom="Plantae" lsidName="Aeschynanthus bracteatus" order="Lamiales" pageId="0" pageNumber="19" phylum="Tracheophyta" rank="species" species="bracteatus">
<emphasis italics="true" pageId="0" pageNumber="19">Aeschynanthus bracteatus</emphasis>
</taxonomicName>
Wall. ex A.DC., 
<taxonomicName class="Polypodiopsida" family="Marattiaceae" genus="Angiopteris" kingdom="Plantae" lsidName="Angiopteris evecta" order="Marattiales" pageId="0" pageNumber="19" phylum="Tracheophyta" rank="species" species="evecta">
<emphasis italics="true" pageId="0" pageNumber="19">Angiopteris evecta</emphasis>
</taxonomicName>
(G. Forst.) Hoffm., 
<taxonomicName class="Polypodiopsida" family="Aspleniaceae" genus="Asplenium" kingdom="Plantae" lsidName="Asplenium unilaterale" order="Polypodiales" pageId="0" pageNumber="19" phylum="Tracheophyta" rank="species" species="unilaterale">
<emphasis italics="true" pageId="0" pageNumber="19">Asplenium unilaterale</emphasis>
</taxonomicName>
Lam., 
<taxonomicName class="Magnoliopsida" family="Begoniaceae" genus="Begonia" kingdom="Plantae" lsidName="Begonia" order="Cucurbitales" pageId="0" pageNumber="19" phylum="Tracheophyta" rank="genus">
<emphasis italics="true" pageId="0" pageNumber="19">Begonia</emphasis>
</taxonomicName>
spp., 
<taxonomicName class="Polypodiopsida" family="Hymenophyllaceae" genus="Crepidomanes" kingdom="Plantae" lsidName="Crepidomanes auriculatum" order="Hymenophyllales" pageId="0" pageNumber="19" phylum="Tracheophyta" rank="species" species="auriculatum">
<emphasis italics="true" pageId="0" pageNumber="19">Crepidomanes auriculatum</emphasis>
</taxonomicName>
(Blume) K. Iwats., 
<taxonomicName class="Magnoliopsida" family="Rubiaceae" genus="Hedyotis" kingdom="Plantae" lsidName="Hedyotis" order="Gentianales" pageId="0" pageNumber="19" phylum="Tracheophyta" rank="genus">
<emphasis italics="true" pageId="0" pageNumber="19">Hedyotis</emphasis>
</taxonomicName>
sp., 
<taxonomicName class="Magnoliopsida" family="Balsaminaceae" genus="Impatiens" kingdom="Plantae" lsidName="Impatiens clavigera" order="Ericales" pageId="0" pageNumber="19" phylum="Tracheophyta" rank="species" species="clavigera">
<emphasis italics="true" pageId="0" pageNumber="19">Impatiens clavigera</emphasis>
</taxonomicName>
Hook. f., 
<taxonomicName class="Polypodiopsida" family="Polypodiaceae" genus="Leptochilus" kingdom="Plantae" lsidName="Leptochilus" order="Polypodiales" pageId="0" pageNumber="19" phylum="Tracheophyta" rank="genus">
<emphasis italics="true" pageId="0" pageNumber="19">Leptochilus</emphasis>
</taxonomicName>
sp., 
<taxonomicName class="Liliopsida" family="Hypoxidaceae" genus="Molineria" kingdom="Plantae" lsidName="Molineria capitulata" order="Asparagales" pageId="0" pageNumber="19" phylum="Tracheophyta" rank="species" species="capitulata">
<emphasis italics="true" pageId="0" pageNumber="19">Molineria capitulata</emphasis>
</taxonomicName>
(Lour.) Herb., 
<taxonomicName class="Magnoliopsida" family="Rubiaceae" genus="Mycetia" kingdom="Plantae" lsidName="Mycetia" order="Gentianales" pageId="0" pageNumber="19" phylum="Tracheophyta" rank="genus">
<emphasis italics="true" pageId="0" pageNumber="19">Mycetia</emphasis>
</taxonomicName>
sp., 
<taxonomicName class="Pteridopsida" family="Polypodiaceae" genus="Phymatosorus" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="Phymatosorus lucidus" order="Filicales" pageId="0" pageNumber="19" phylum="Polypodiophyta" rank="species" species="lucidus">
<emphasis italics="true" pageId="0" pageNumber="19">Phymatosorus lucidus</emphasis>
</taxonomicName>
(Roxb.) Pic. Serm., 
<taxonomicName class="Liliopsida" family="Araceae" genus="Rhaphidophora" kingdom="Plantae" lsidName="Rhaphidophora decursiva" order="Alismatales" pageId="0" pageNumber="19" phylum="Tracheophyta" rank="species" species="decursiva">
<emphasis italics="true" pageId="0" pageNumber="19">Rhaphidophora decursiva</emphasis>
</taxonomicName>
(Roxb.) Schott, 
<taxonomicName class="Magnoliopsida" family="Gesneriaceae" genus="Rhynchotechum" kingdom="Plantae" lsidName="Rhynchotechum ellipticum" order="Lamiales" pageId="0" pageNumber="19" phylum="Tracheophyta" rank="species" species="ellipticum">
<emphasis italics="true" pageId="0" pageNumber="19">Rhynchotechum ellipticum</emphasis>
</taxonomicName>
(Wall. ex D. Dietr.) A. DC., and 
<taxonomicName class="Magnoliopsida" family="Symplocaceae" genus="Symplocos" kingdom="Plantae" lsidName="Symplocos banaensis" order="Ericales" pageId="0" pageNumber="19" phylum="Tracheophyta" rank="species" species="banaensis">
<emphasis italics="true" pageId="0" pageNumber="19">Symplocos banaensis</emphasis>
</taxonomicName>
Guillaumin.
</paragraph>
<caption doi="10.3897/phytokeys.218.96511.figure2" httpUri="https://binary.pensoft.net/fig/793590" pageId="0" pageNumber="19" start="Figure 2" startId="F2">
<paragraph pageId="0" pageNumber="19">
<emphasis bold="true" pageId="0" pageNumber="19">Figure 2.</emphasis>
<taxonomicName class="Magnoliopsida" family="Gesneriaceae" genus="Raphiocarpus" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Raphiocarpus taygiangensis" order="Lamiales" pageId="0" pageNumber="19" phylum="Tracheophyta" rank="species" species="taygiangensis">
<emphasis italics="true" pageId="0" pageNumber="19">Raphiocarpus taygiangensis</emphasis>
</taxonomicName>
C.H.Nguyen, K.S.Nguyen &amp; Aver., sp. nov. holotype specimen, Cuong et al., CKH 2022042068 (VNF).
</paragraph>
</caption>
</subSubSection>
<subSubSection pageId="0" pageNumber="19" type="phenology">
<paragraph pageId="0" pageNumber="19">Phenology.</paragraph>
<paragraph pageId="0" pageNumber="19">Flowers from April to May, fruiting from May to June.</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="19" type="etymology">
<paragraph pageId="0" pageNumber="19">Etymology.</paragraph>
<paragraph pageId="0" pageNumber="19">The species epithet refers to the name of the district of the type location (Tay Giang District in Quang Nam Province).</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="19" type="iucn conservation status">
<paragraph pageId="0" pageNumber="19">IUCN conservation status.</paragraph>
<paragraph pageId="0" pageNumber="19">
The special field studies around the type location revealed no other populations outside the occupancy area which was estimated to be about 5 km2. The type location consists of approximately 500 mature individuals growing in moist shady places near waterfall and along the stream. The population territory currently does not belong to any protected area, and its future protection is needed. The area has been relatively undisturbed to date due to its significance to the surrounding village, although local people continue to forage in it for firewood. Considering the small population size and fragile habitat, we propose that the new species should be preliminarily assessed as Vulnerable (VU D2) according to criteria 
<bibRefCitation author="Ho, PH" journalOrPublisher="Sunyatsenia" pageId="0" pageNumber="19" publicationUrl="http://cmsdocs.s3.amazonaws.com/RedListGuidelines.pdf" refId="B6" refString="2019. . http://cmsdocs.s3.amazonaws.com/RedListGuidelines.pdf" url="http://cmsdocs.s3.amazonaws.com/RedListGuidelines.pdf" year="2019">IUCN (2019)</bibRefCitation>
.
</paragraph>
<caption doi="10.3897/phytokeys.218.96511.figure3" httpUri="https://binary.pensoft.net/fig/793591" pageId="0" pageNumber="19" start="Figure 3" startId="F3">
<paragraph pageId="0" pageNumber="19">
<emphasis bold="true" pageId="0" pageNumber="19">Figure 3.</emphasis>
<taxonomicName class="Magnoliopsida" family="Gesneriaceae" genus="Raphiocarpus" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Raphiocarpus taygiangensis" order="Lamiales" pageId="0" pageNumber="19" phylum="Tracheophyta" rank="species" species="taygiangensis">
<emphasis italics="true" pageId="0" pageNumber="19">Raphiocarpus taygiangensis</emphasis>
</taxonomicName>
C.H.Nguyen, K.S.Nguyen &amp; Aver., sp. nov. 
<emphasis bold="true" pageId="0" pageNumber="19">A</emphasis>
flower front view 
<emphasis bold="true" pageId="0" pageNumber="19">B</emphasis>
habitat 
<emphasis bold="true" pageId="0" pageNumber="19">C</emphasis>
lateral view of flower and fruit; 
<taxonomicName authorityName="D.J.Middleton" authorityYear="2021" class="Magnoliopsida" family="Gesneriaceae" genus="Raphiocarpus" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Raphiocarpus axillaris" order="Lamiales" pageId="0" pageNumber="19" phylum="Tracheophyta" rank="species" species="axillaris">
<emphasis italics="true" pageId="0" pageNumber="19">Raphiocarpus axillaris</emphasis>
</taxonomicName>
D.J.Middleton, sp. nov. 
<emphasis bold="true" pageId="0" pageNumber="19">D</emphasis>
flower front view 
<emphasis bold="true" pageId="0" pageNumber="19">E</emphasis>
habitat 
<emphasis bold="true" pageId="0" pageNumber="19">F</emphasis>
lateral view of flower and fruit. Photos by Ly Van Nguyen (
<emphasis bold="true" pageId="0" pageNumber="19">D-F</emphasis>
), Cuong Huu Nguyen and Khang Sinh Nguyen, correction and design by Cuong Huu Nguyen.
</paragraph>
</caption>
</subSubSection>
<subSubSection pageId="0" pageNumber="19" type="notes">
<paragraph pageId="0" pageNumber="19">Note.</paragraph>
<paragraph pageId="0" pageNumber="19">
A comparison of the most significant morphological characters of 
<taxonomicName class="Magnoliopsida" family="Gesneriaceae" genus="Raphiocarpus" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Raphiocarpus taygiangensis" order="Lamiales" pageId="0" pageNumber="19" phylum="Tracheophyta" rank="species" species="taygiangensis">
<emphasis italics="true" pageId="0" pageNumber="19">Raphiocarpus taygiangensis</emphasis>
</taxonomicName>
and its closest congeners, 
<taxonomicName class="Magnoliopsida" family="Gesneriaceae" kingdom="Plantae" lsidName="R. axillaris" order="Lamiales" pageId="0" pageNumber="19" phylum="Tracheophyta" rank="species" species="axillaris">
<emphasis italics="true" pageId="0" pageNumber="19">R. axillaris</emphasis>
</taxonomicName>
. The new species can be easily distinguished from 
<taxonomicName class="Magnoliopsida" family="Gesneriaceae" kingdom="Plantae" lsidName="R. axillaris" order="Lamiales" pageId="0" pageNumber="19" phylum="Tracheophyta" rank="species" species="axillaris">
<emphasis italics="true" pageId="0" pageNumber="19">R. axillaris</emphasis>
</taxonomicName>
in having basally prostrate and distally ascending stem; sericeous hairs on young stem, leaf petiole and adaxial mid-vein; sparsely serrulate leaf margin; axillary inflorescence; sparse glandular hairs on the peduncle, pedicel, calyx, pistil, and abaxial surface of corolla; calyx 5-lobed, dissected from the base; white or light purplish flowers with purple stripes inside corolla tube; twining filaments; and dish-shaped stigma formed by 2 semi-orbicular lobes spreading horizontally. The comparison of the key morphological characters of 
<taxonomicName authority="taygiangensis" class="Magnoliopsida" family="Gesneriaceae" genus="R." kingdom="Plantae" lsidName="R." order="Lamiales" pageId="0" pageNumber="19" phylum="Tracheophyta" rank="genus">R. taygiangensis</taxonomicName>
, and 
<taxonomicName class="Magnoliopsida" family="Gesneriaceae" kingdom="Plantae" lsidName="R. axillaris" order="Lamiales" pageId="0" pageNumber="19" phylum="Tracheophyta" rank="species" species="axillaris">
<emphasis italics="true" pageId="0" pageNumber="19">R. axillaris</emphasis>
</taxonomicName>
is presented in Table 
<tableCitation captionStart="Table 1" captionStartId="T1" captionText="Table 1. Most significant morphological discriminative characters of Raphiocarpus taygiangensis and R. axillaris." httpUri="http://table.plazi.org/id/DDE847C90FC4C9ECA10E839B88B5D104" pageId="0" pageNumber="19" tableUuid="DDE847C90FC4C9ECA10E839B88B5D104">1</tableCitation>
.
</paragraph>
</subSubSection>
</treatment>
</document>