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<document ID-DOI="10.11646/phytotaxa.581.1.1" ID-ISSN="1179-3163" ID-Zenodo-Dep="7571550" approvalRequired="50" approvalRequired_for_taxonomicNames="15" approvalRequired_for_textStreams="30" approvalRequired_for_treatments="5" checkinTime="1674712547726" checkinUser="plazi" docAuthor="Dang, Van-Son &amp; Naiki, Akiyo" docDate="2023" docId="43284262FFAEFFEF5AB6FEF740C1CFBD" docLanguage="en" docName="phytotaxa.581.1.1.pdf" docOrigin="Phytotaxa 581 (1)" docSource="http://dx.doi.org/10.1094/PDIS-04-22-0755-PDN" docStyle="DocumentStyle:F08184CE06D8A97EA3E6DE35D99648B0.1:Phytotaxa.2014-.monograph" docStyleId="F08184CE06D8A97EA3E6DE35D99648B0" docStyleName="Phytotaxa.2014-.monograph" docStyleVersion="1" docTitle="Lasianthus dakgleiensis V. S. Dang, Naiki &amp; Tagane 1921" docType="treatment" docVersion="2" lastPageNumber="1935" masterDocId="BF113A1AFF9FFFDE5A3EFFA54026CC48" masterDocTitle="A revision of the genus Lasianthus Jack (Rubiaceae) from Vietnam" masterLastPageNumber="1935" masterPageNumber="1921" pageNumber="1921" updateTime="1674713874756" updateUser="ExternalLinkService">
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo>
<mods:title>A revision of the genus Lasianthus Jack (Rubiaceae) from Vietnam</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Dang, Van-Son</mods:namePart>
<mods:nameIdentifier type="ORCID">0000-0001-8681-4141</mods:nameIdentifier>
<mods:affiliation>Iriomote Station, Tropical Biosphere Research Center, University of the Ryukyus, 870 Uehara, Taketomi-cho, Yaeyama-gun, Okinawa, 907 - 1541 Japan. &amp; Institute of Tropical Biology, Vietnam Academy of Science and Technology, 85 Tran Quoc Toan Street, District 3, Ho Chi Minh City, Vietnam. &amp; Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Vietnam. &amp; dvsonitb @ gmail. com; https: // orcid. org / 0000 - 0001 - 8681 - 4141</mods:affiliation>
<mods:nameIdentifier type="email">dvsonitb@gmail.com</mods:nameIdentifier>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Naiki, Akiyo</mods:namePart>
<mods:nameIdentifier type="ORCID">0000-0002-3235-2823</mods:nameIdentifier>
<mods:affiliation>Iriomote Station, Tropical Biosphere Research Center, University of the Ryukyus, 870 Uehara, Taketomi-cho, Yaeyama-gun, Okinawa, 907 - 1541 Japan. &amp; Iriomote Station, Tropical Biosphere Research Center, University of the Ryukyus, 870 Uehara, Taketomi-cho, Yaeyama-gun, Okinawa, 907 - 1541 Japan. &amp; naiki @ lab. u-ryukyu. ac. jp; https: // orcid. org / 0000 - 0002 - 3235 - 2823 * Author for correspondence</mods:affiliation>
<mods:nameIdentifier type="email">naiki@lab.u-ryukyu.ac.jp</mods:nameIdentifier>
</mods:name>
<mods:typeOfResource>text</mods:typeOfResource>
<mods:relatedItem type="host">
<mods:titleInfo>
<mods:title>Phytotaxa</mods:title>
</mods:titleInfo>
<mods:part>
<mods:date>2023</mods:date>
<mods:detail type="pubDate">
<mods:number>2023-01-26</mods:number>
</mods:detail>
<mods:detail type="volume">
<mods:number>581</mods:number>
</mods:detail>
<mods:detail type="issue">
<mods:number>1</mods:number>
</mods:detail>
<mods:extent unit="page">
<mods:start>1921</mods:start>
<mods:end>1935</mods:end>
</mods:extent>
</mods:part>
</mods:relatedItem>
<mods:location>
<mods:url>http://dx.doi.org/10.1094/PDIS-04-22-0755-PDN</mods:url>
</mods:location>
<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">10.11646/phytotaxa.581.1.1</mods:identifier>
<mods:identifier type="ISSN">1179-3163</mods:identifier>
<mods:identifier type="Zenodo-Dep">7571550</mods:identifier>
</mods:mods>
<treatment ID-DOI="http://doi.org/10.5281/zenodo.7571630" ID-Zenodo-Dep="7571630" LSID="urn:lsid:plazi:treatment:43284262FFAEFFEF5AB6FEF740C1CFBD" httpUri="http://treatment.plazi.org/id/43284262FFAEFFEF5AB6FEF740C1CFBD" pageId="49">
<subSubSection box="[136,1241,338,365]" pageId="49" type="nomenclature">
<paragraph blockId="49.[136,1452,338,472]" box="[136,1241,338,365]" pageId="49">
<emphasis bold="true" box="[136,171,338,364]" pageId="49">16.</emphasis>
<taxonomicName authority="V. S. Dang, Naiki &amp; Tagane (1921: 36)" authorityName="V. S. Dang, Naiki &amp; Tagane" authorityPageNumber="36" authorityYear="1921" box="[178,885,338,365]" class="Magnoliopsida" family="Rubiaceae" genus="Lasianthus" kingdom="Plantae" order="Gentianales" pageId="49" phylum="Tracheophyta" rank="species" species="dakgleiensis">
<emphasis bold="true" box="[178,456,338,365]" italics="true" pageId="49">Lasianthus dakgleiensis</emphasis>
V.S.Dang, Naiki &amp; Tagane (1921: 36)
</taxonomicName>
<figureCitation box="[916,993,338,365]" captionStart="FIGURE 35" captionStartId="50.[136,229,1784,1806]" captionTargetBox="[167,1418,194,1757]" captionTargetId="figure-25@50.[165,1418,193,1760]" captionTargetPageId="50" captionText="FIGURE 35. Lasianthus dakglaiensis V.S.Dang, Naiki &amp; Tagane (from V6528, VNM): A. Branch with fruits, B. Close-up of young branch and leaves, C. Stipules, D.Abaxial leaf surfaces, EG. Inflorescence showing side view calyxes and flowers, HI. Fruits, J. Seeds (A, D, EI: photos by Shuichiro Tagane)." figureDoi="http://doi.org/10.5281/zenodo.7571656" httpUri="https://zenodo.org/record/7571656/files/figure.png" pageId="49">Fig. 35</figureCitation>
(plate),
<figureCitation box="[1087,1167,338,364]" captionStart="FIGURE 32" captionStartId="45.[136,229,1781,1803]" captionTargetBox="[176,1410,204,1747]" captionTargetId="figure-17@45.[165,1418,193,1757]" captionTargetPageId="45" captionText="FIGURE 32. Distribution maps of Lasianthus chinensis, L. chrysoneurus, L. curtisii and L. dakglaiensis." figureDoi="http://doi.org/10.5281/zenodo.7571646" httpUri="https://zenodo.org/record/7571646/files/figure.png" pageId="49">Fig. 32</figureCitation>
(map)
</paragraph>
</subSubSection>
<subSubSection pageId="49" type="materials_examined">
<paragraph blockId="49.[136,1452,338,472]" pageId="49">
<emphasis bold="true" box="[136,194,378,399]" pageId="49">Type:</emphasis>
<materialsCitation box="[219,1451,378,400]" collectingDate="2017-02-13" collectorName="Tagane S. &amp; Nagamasu H. &amp; Nguyen" country="Vietnam" elevation="1376" location="Ngoc Linh Nature Reserve" pageId="49" specimenCount="1" stateProvince="Kon Tum">
<collectingCountry box="[219,332,378,399]" name="Vietnam" pageId="49">VIETNAM</collectingCountry>
.
<collectingRegion box="[341,527,378,400]" country="Vietnam" name="Kon Tum" pageId="49">Kon Tum Province</collectingRegion>
,
<location LSID="urn:lsid:plazi:treatment:43284262FFAEFFEF5AB6FEF740C1CFBD:CE5EA5AFFFAEFFEF5827FEDF4338CDC7" box="[537,798,378,400]" country="Vietnam" name="Ngoc Linh Nature Reserve" pageId="49" stateProvince="Kon Tum">Ngoc Linh Nature Reserve</location>
,
<quantity box="[808,881,378,400]" metricMagnitude="3" metricUnit="m" metricValue="1.376" pageId="49" unit="m" value="1376.0">
<elevation box="[808,881,378,400]" metricMagnitude="3" metricUnit="m" metricValue="1.376" pageId="49" unit="m" value="1376.0">1376 m</elevation>
</quantity>
elev.,
<date box="[944,1117,378,400]" pageId="49" value="2017-02-13">
<collectingDate box="[944,1117,378,400]" pageId="49" value="2017-02-13">13 February 2017</collectingDate>
</date>
,
<emphasis box="[1127,1451,378,399]" italics="true" pageId="49">
<collectorName box="[1127,1223,378,399]" pageId="49">Tagane S.</collectorName>
,
<collectorName box="[1233,1369,378,399]" pageId="49">Nagamasu H.</collectorName>
,
<collectorName box="[1378,1451,378,399]" pageId="49">Nguyen</collectorName>
</emphasis>
</materialsCitation>
<materialsCitation collectionCode="VNM, DLU, FU" collectorName="Hoang T. B. &amp; Hoang T. S. &amp; Yang C. J. &amp; Kawakubo A. V" country="Japan" location="Iriomote Station" pageId="49" specimenCode="VNM00042884" specimenCount="1" typeStatus="holotype">
<emphasis box="[189,770,414,435]" italics="true" pageId="49">
<taxonomicNameLabel box="[189,232,414,435]" pageId="49" rank="variety">V.N.</taxonomicNameLabel>
,
<collectorName box="[240,351,414,435]" pageId="49">Hoang T.B.</collectorName>
,
<collectorName box="[358,466,414,435]" pageId="49">Hoang T.S.</collectorName>
,
<collectorName box="[474,567,414,435]" pageId="49">Yang C.J.</collectorName>
,
<collectorName box="[575,722,414,435]" pageId="49">Kawakubo A. V</collectorName>
6528
</emphasis>
(
<typeStatus box="[781,867,414,436]" pageId="49">holotype</typeStatus>
<collectionCode box="[871,932,414,435]" country="Viet Nam" httpUri="http://grbio.org/cool/tj07-dt2h" name="Institute of Tropical Biology" pageId="49" type="Herbarium">VNM</collectionCode>
! [
<specimenCode box="[945,1105,414,435]" collectionCode="VNM" country="Viet Nam" httpUri="http://grbio.org/cool/tj07-dt2h" name="Institute of Tropical Biology" pageId="49" type="Herbarium">VNM00042884</specimenCode>
]; isotypes
<collectionCode box="[1202,1258,414,435]" pageId="49">DLU</collectionCode>
!,
<collectionCode box="[1270,1307,414,435]" country="China" name="Fudan University, Department of Biology" pageId="49">FU</collectionCode>
!, the herbarium of
<location LSID="urn:lsid:plazi:treatment:43284262FFAEFFEF5AB6FEF740C1CFBD:CE5EA5AFFFAEFFEF5AE9FE674152CD90" box="[215,372,450,472]" country="Japan" name="Iriomote Station" pageId="49">Iriomote Station</location>
(
<collectingCountry box="[385,444,450,471]" name="Japan" pageId="49">Japan</collectingCountry>
))
</materialsCitation>
.
</paragraph>
<paragraph blockId="49.[136,1452,518,1013]" pageId="49">
<emphasis bold="true" box="[136,401,518,544]" pageId="49">Specimens examined:</emphasis>
<collectingCountry box="[430,562,518,544]" name="Vietnam" pageId="49">VIETNAM</collectingCountry>
.
<materialsCitation collectingDate="2017-02-10" collectingDateMax="2017-02-13" collectingDateMin="2017-02-10" collectionCode="DLU, FU, VNM" collectorName="Tagane S. &amp; Nagamasu H." country="Vietnam" elevation="1376" location="Central" municipality="Ngoc Linh Nature Reserve" pageId="49" specimenCount="1" stateProvince="Kon Tum">
<emphasis bold="true" box="[579,680,518,544]" pageId="49">
<location LSID="urn:lsid:plazi:treatment:43284262FFAEFFEF5AB6FEF740C1CFBD:CE5EA5AFFFAEFFEF587DFDA34285CE68" box="[579,675,518,544]" country="Vietnam" municipality="Ngoc Linh Nature Reserve" name="Central" pageId="49" stateProvince="Kon Tum">Central</location>
:
</emphasis>
<collectingRegion box="[694,924,518,545]" country="Vietnam" name="Kon Tum" pageId="49">Kon Tum Province</collectingRegion>
,
<collectingMunicipality box="[943,1268,518,545]" pageId="49">Ngoc Linh Nature Reserve</collectingMunicipality>
,
<quantity box="[1286,1379,518,545]" metricMagnitude="3" metricUnit="m" metricValue="1.376" pageId="49" unit="m" value="1376.0">
<elevation box="[1286,1379,518,545]" metricMagnitude="3" metricUnit="m" metricValue="1.376" pageId="49" unit="m" value="1376.0">1376 m</elevation>
</quantity>
elev., 15˚1007.04”N, 107˚4543.04E,
<date box="[520,722,554,580]" pageId="49" value="2017-02-13">
<collectingDate box="[520,722,554,580]" pageId="49" value="2017-02-13">13 February 2017</collectingDate>
</date>
,
<emphasis italics="true" pageId="49">
Tagane S., Nagamasu H., Nguyen
<taxonomicNameLabel box="[1117,1167,555,580]" pageId="49" rank="variety">
<collectingCountry box="[1117,1167,555,580]" name="Vietnam" pageId="49">V.N.</collectingCountry>
</taxonomicNameLabel>
, Hoang T.B., Hoang T.S., Yang C.J., Kawakubo A. V6528
</emphasis>
(
<collectionCode box="[492,554,590,616]" pageId="49">DLU</collectionCode>
,
<collectionCode box="[562,601,591,617]" country="China" name="Fudan University, Department of Biology" pageId="49">FU</collectionCode>
,
<collectionCode box="[610,680,590,616]" country="Viet Nam" httpUri="http://grbio.org/cool/tj07-dt2h" name="Institute of Tropical Biology" pageId="49" type="Herbarium">VNM</collectionCode>
); in the same location,
<quantity box="[927,1009,590,617]" metricMagnitude="3" metricUnit="m" metricValue="1.141" pageId="49" unit="m" value="1141.0">
<elevation box="[927,1009,590,617]" metricMagnitude="3" metricUnit="m" metricValue="1.141" pageId="49" unit="m" value="1141.0">1141 m</elevation>
</quantity>
elev., 15˚3232.04”N, 107˚4354.09E,
<date box="[136,341,626,652]" pageId="49" value="2017-02-10">
<collectingDate box="[136,341,626,652]" pageId="49" value="2017-02-10">10 February 2017</collectingDate>
</date>
,
<emphasis box="[354,737,627,653]" italics="true" pageId="49">
<collectorName box="[354,466,627,653]" pageId="49">Tagane S.</collectorName>
,
<collectorName box="[480,638,627,652]" pageId="49">Nagamasu H.</collectorName>
, Nguyen
</emphasis>
</materialsCitation>
<emphasis box="[745,798,627,652]" italics="true" pageId="49">
<taxonomicNameLabel box="[745,795,627,652]" pageId="49" rank="variety">
<collectingCountry box="[745,795,627,652]" name="Vietnam" pageId="49">V.N.</collectingCountry>
</taxonomicNameLabel>
,
</emphasis>
<materialsCitation collectionCode="DLU, FU" collectorName="Hoang T. B. &amp; Hoang T. S. &amp; Yang C. J. &amp; Kawakubo A. V" country="Japan" location="Iriomote Station" pageId="49" specimenCount="1">
<emphasis box="[807,1451,626,653]" italics="true" pageId="49">
<collectorName box="[807,939,627,652]" pageId="49">Hoang T.B.</collectorName>
,
<collectorName box="[952,1081,627,653]" pageId="49">Hoang T.S.</collectorName>
,
<collectorName box="[1094,1204,627,653]" pageId="49">Yang C.J.</collectorName>
,
<collectorName box="[1218,1395,626,653]" pageId="49">Kawakubo A. V</collectorName>
6067
</emphasis>
(
<collectionCode box="[144,206,662,688]" pageId="49">DLU</collectionCode>
,
<collectionCode box="[217,256,663,689]" country="China" name="Fudan University, Department of Biology" pageId="49">FU</collectionCode>
, the herbarium of
<location LSID="urn:lsid:plazi:treatment:43284262FFAEFFEF5AB6FEF740C1CFBD:CE5EA5AFFFAEFFEF5BF2FD3342A5CEF8" box="[460,643,662,688]" country="Japan" name="Iriomote Station" pageId="49">Iriomote Station</location>
(
<collectingCountry box="[658,727,662,688]" name="Japan" pageId="49">Japan</collectingCountry>
))
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection pageId="49" type="distribution">
<paragraph blockId="49.[136,1452,518,1013]" box="[189,1407,698,725]" pageId="49">
<emphasis bold="true" box="[189,345,698,724]" pageId="49">Distribution:</emphasis>
—Endemic to
<collectingCountry box="[508,603,698,724]" name="Vietnam" pageId="49">Vietnam</collectingCountry>
(known only from the Ngoc Linh Nature Reserve,
<collectingRegion box="[1177,1395,698,725]" country="Vietnam" name="Kon Tum" pageId="49">Kon Tum Province</collectingRegion>
).
</paragraph>
<paragraph blockId="49.[136,1452,518,1013]" box="[189,1125,734,761]" pageId="49">
<emphasis bold="true" box="[189,423,734,760]" pageId="49">Habitat &amp; Ecology:</emphasis>
—In the lower montane evergreen forest at
<quantity box="[911,1066,734,761]" metricMagnitude="3" metricUnit="m" metricValue="1.2" metricValueMax="1.4" metricValueMin="1.0" pageId="49" unit="m" value="1200.0" valueMax="1400.0" valueMin="1000.0">10001400 m</quantity>
elev.
</paragraph>
<paragraph blockId="49.[136,1452,518,1013]" box="[189,862,770,797]" pageId="49">
<emphasis bold="true" box="[189,323,770,796]" pageId="49">Phenology:</emphasis>
—Flowering and fruiting from February to July.
</paragraph>
<paragraph blockId="49.[136,1452,518,1013]" box="[189,650,806,835]" pageId="49">
<emphasis bold="true" box="[189,405,806,832]" pageId="49">Vernacular name:</emphasis>
—Xú hưƠng đắk glei.
</paragraph>
<paragraph blockId="49.[136,1452,518,1013]" pageId="49">
<emphasis bold="true" box="[189,265,842,868]" pageId="49">Notes:</emphasis>
<taxonomicName authorityName="V. S. Dang, Naiki &amp; Tagane" authorityYear="1921" box="[294,559,842,868]" class="Magnoliopsida" family="Rubiaceae" genus="Lasianthus" kingdom="Plantae" order="Gentianales" pageId="49" phylum="Tracheophyta" rank="species" species="dakgleiensis">
<emphasis box="[294,559,842,868]" italics="true" pageId="49">Lasianthus dakgleiensis</emphasis>
</taxonomicName>
is similar to
<taxonomicName authority="H. Zhu (2000: 124)" authorityName="H. Zhu" authorityPageNumber="124" authorityYear="2000" box="[697,1099,842,868]" class="Magnoliopsida" family="Rubiaceae" genus="Lasianthus" kingdom="Plantae" order="Gentianales" pageId="49" phylum="Tracheophyta" rank="species" species="congesticymus">
<emphasis box="[697,888,843,868]" italics="true" pageId="49">L. congesticymus</emphasis>
H.
<bibRefCitation author="Zhu, H." box="[917,1099,842,868]" pageId="49" pagination="395 - 398" refId="ref55414" refString="Zhu, H. (2000) New plants of genus Lasianthus (Rubiaceae) from Vietnam. Acta Botanica Yunnanica 22 (4): 395 - 398." type="journal article" year="2000">Zhu (2000: 124)</bibRefCitation>
</taxonomicName>
which is distributed in
<collectingCountry box="[1352,1452,842,868]" name="Thailand" pageId="49">Thailand</collectingCountry>
and
<collectingCountry box="[185,290,878,904]" name="Malaysia" pageId="49">Malaysia</collectingCountry>
, but differs from the latter in having smaller leaves (711 ×
<quantity box="[980,1085,878,905]" metricMagnitude="-2" metricUnit="m" metricValue="2.75" metricValueMax="3.5" metricValueMin="2.0" pageId="49" unit="cm" value="2.75" valueMax="3.5" valueMin="2.0">23.5 cm</quantity>
vs. 1219 ×
<quantity box="[1236,1367,878,905]" metricMagnitude="-2" metricUnit="m" metricValue="5.0" metricValueMax="6.5" metricValueMin="3.5" pageId="49" unit="cm" value="5.0" valueMax="6.5" valueMin="3.5">3.56.5 cm</quantity>
), fewer secondary veins (45 on each side of midrib vs. 67 on each side of midrib), shorter petioles (
<quantity box="[1196,1291,914,941]" metricMagnitude="-3" metricUnit="m" metricValue="4.5" metricValueMax="5.0" metricValueMin="4.0" pageId="49" unit="mm" value="4.5" valueMax="5.0" valueMin="4.0">45 mm</quantity>
long vs.
<quantity metricMagnitude="-3" metricUnit="m" metricValue="9.0" metricValueMax="10.0" metricValueMin="8.0" pageId="49" unit="mm" value="9.0" valueMax="10.0" valueMin="8.0">810 mm</quantity>
long), bracts
<quantity box="[336,401,950,977]" metricMagnitude="-3" metricUnit="m" metricValue="1.0" pageId="49" unit="mm" value="1.0">1 mm</quantity>
long (vs. absent), larger calyx lobes (
<quantity box="[826,942,950,977]" metricMagnitude="-3" metricUnit="m" metricValue="2.75" metricValueMax="3.0" metricValueMin="2.5" pageId="49" unit="mm" value="2.75" valueMax="3.0" valueMin="2.5">2.53 mm</quantity>
long vs.
<quantity box="[1046,1111,950,977]" metricMagnitude="-3" metricUnit="m" metricValue="1.0" pageId="49" unit="mm" value="1.0">1 mm</quantity>
long) and fruits with 5 (vs. 4) pyrenes.
</paragraph>
</subSubSection>
</treatment>
</document>