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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="43284262FFC0FF815AB6FDD740EDC914" 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 lecomtei Pit. 1924" 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.7571794" ID-Zenodo-Dep="7571794" LSID="urn:lsid:plazi:treatment:43284262FFC0FF815AB6FDD740EDC914" httpUri="http://treatment.plazi.org/id/43284262FFC0FF815AB6FDD740EDC914" pageId="95">
<subSubSection box="[136,949,626,653]" pageId="95" type="nomenclature">
<paragraph blockId="95.[136,1169,626,688]" box="[136,949,626,653]" pageId="95">
<emphasis bold="true" box="[136,171,626,652]" pageId="95">45.</emphasis>
<taxonomicName ID-CoL="3SCNC" authority="Pit. (1924: 374)" authorityName="Pit." authorityPageNumber="374" authorityYear="1924" box="[178,594,626,653]" class="Magnoliopsida" family="Rubiaceae" genus="Lasianthus" kingdom="Plantae" order="Gentianales" pageId="95" phylum="Tracheophyta" rank="species" species="lecomtei">
<emphasis bold="true" box="[178,410,626,653]" italics="true" pageId="95">Lasianthus lecomtei</emphasis>
Pit. (1924: 374)
</taxonomicName>
<figureCitation box="[624,702,626,652]" captionStart="FIGURE 71" captionStartId="96.[136,229,1786,1808]" captionTargetBox="[170,1415,194,1756]" captionTargetId="figure-24@96.[164,1420,193,1762]" captionTargetPageId="96" captionText="FIGURE 71. Lasianthus lecomtei Pit. (from Dang 428, VNM): A. Branch, B. Close-up of expanding young leaves, C. Stipules, D. Abaxial leaf surfaces, E. Inflorescence showing lateral view calyx, DH. Fruits." figureDoi="http://doi.org/10.5281/zenodo.7571770" httpUri="https://zenodo.org/record/7571770/files/figure.png" pageId="95">Fig. 71</figureCitation>
(plate),
<figureCitation box="[796,875,626,652]" captionStart="FIGURE 67" captionStartId="90.[136,229,1794,1816]" captionTargetBox="[180,1405,206,1757]" captionTargetId="figure-24@90.[165,1418,193,1769]" captionTargetPageId="90" captionText="FIGURE 67. Distribution maps of Lasianthus lamdongensis, L. lancifolius, L. larsenii, L. latifolius and L. lecomtei." figureDoi="http://doi.org/10.5281/zenodo.7571758" httpUri="https://zenodo.org/record/7571758/files/figure.png" pageId="95">Fig. 67</figureCitation>
(map)
</paragraph>
</subSubSection>
<subSubSection pageId="95" type="materials_examined">
<paragraph blockId="95.[136,1169,626,688]" box="[136,1169,666,688]" pageId="95">
<emphasis bold="true" box="[136,194,666,687]" pageId="95">Type:</emphasis>
<materialsCitation box="[219,1166,666,688]" collectingDate="1911-11-18" collectorName="Lecomte &amp; Finet" country="Vietnam" location="City" pageId="95" specimenCount="1" stateProvince="Da Nang" typeStatus="holotype">
<collectingCountry box="[219,332,666,687]" name="Vietnam" pageId="95">VIETNAM</collectingCountry>
.
<collectingRegion box="[341,427,666,687]" country="Vietnam" name="Da Nang" pageId="95">Da Nang</collectingRegion>
<location LSID="urn:lsid:plazi:treatment:43284262FFC0FF815AB6FDD740EDC914:CE5EA5AFFFC0FF815B8FFD3F41FDCEF8" box="[433,475,666,688]" country="Vietnam" name="City" pageId="95" stateProvince="Da Nang">City</location>
,
<date box="[485,671,666,688]" pageId="95" value="1911-11-18">
<collectingDate box="[485,671,666,688]" pageId="95" value="1911-11-18">18 November 1911</collectingDate>
</date>
,
<emphasis box="[681,898,666,687]" italics="true" pageId="95">
<collectorName box="[681,762,666,687]" pageId="95">Lecomte</collectorName>
&amp;
<collectorName box="[793,844,666,687]" pageId="95">Finet</collectorName>
1316
</emphasis>
(
<typeStatus box="[910,996,666,688]" pageId="95">holotype</typeStatus>
P! [P02285240])
</materialsCitation>
.
</paragraph>
<paragraph blockId="95.[136,1452,734,1372]" pageId="95">
<emphasis bold="true" box="[136,398,734,760]" pageId="95">
<collectingRegion box="[136,262,734,760]" pageId="95">Specimens</collectingRegion>
examined:
</emphasis>
<materialsCitation collectingDate="1997-03-15" collectingDateMax="2021-03-25" collectingDateMin="1997-03-15" collectionCode="VNM" collectorName="L. Averyanov &amp; N. Q. Binh &amp; N. V. Duy &amp; P. K. Loc &amp; Dang V. S. &amp; Truong B. V. &amp; Le T. K. N. &amp; Dang" country="Vietnam" county="Lac Duong District" elevation="1775" location="Dang" municipality="Kon Ka Kinh National Park" pageId="95" specimenCount="1" stateProvince="Lam Dong">
<collectingCountry box="[427,559,734,760]" name="Vietnam" pageId="95">VIETNAM</collectingCountry>
.
<emphasis bold="true" box="[573,674,734,760]" pageId="95">Central:</emphasis>
<collectingRegion box="[686,924,734,761]" country="Vietnam" name="Lam Dong" pageId="95">Lam Dong Province</collectingRegion>
,
<collectingCounty box="[940,1167,734,761]" pageId="95">Lac Duong District</collectingCounty>
,
<quantity box="[1183,1342,734,761]" metricMagnitude="3" metricUnit="m" metricValue="1.775" metricValueMax="1.85" metricValueMin="1.7" pageId="95" unit="m" value="1775.0" valueMax="1850.0" valueMin="1700.0">
<elevation box="[1183,1342,734,761]" metricMagnitude="3" metricUnit="m" metricValue="1.775" metricValueMax="1.85" metricValueMin="1.7" pageId="95" unit="m" value="1775.0" valueMax="1850.0" valueMin="1700.0">17001850 m</elevation>
</quantity>
elev.,
<date pageId="95" value="1997-03-15">
<collectingDate pageId="95" value="1997-03-15">15 March 1997</collectingDate>
</date>
,
<emphasis box="[288,928,770,797]" italics="true" pageId="95">
<collectorName box="[288,437,771,797]" pageId="95">L. Averyanov</collectorName>
,
<collectorName box="[449,574,770,797]" pageId="95">N. Q. Binh</collectorName>
,
<collectorName box="[586,696,771,796]" pageId="95">
<taxonomicNameLabel box="[586,641,771,796]" pageId="95" rank="variety">N. V.</taxonomicNameLabel>
Duy
</collectorName>
,
<collectorName box="[708,823,771,796]" pageId="95">P. K. Loc</collectorName>
, VH2628
</emphasis>
(P);
<collectingRegion box="[986,1182,770,796]" country="Vietnam" name="Gia Lai" pageId="95">Gia Lai Province</collectingRegion>
,
<collectingMunicipality pageId="95">Kon Ka Kinh National Park</collectingMunicipality>
,
<quantity box="[200,354,806,833]" metricMagnitude="3" metricUnit="m" metricValue="1.1" metricValueMax="1.2" metricValueMin="1.0" pageId="95" unit="m" value="1100.0" valueMax="1200.0" valueMin="1000.0">
<elevation box="[200,354,806,833]" metricMagnitude="3" metricUnit="m" metricValue="1.1" metricValueMax="1.2" metricValueMin="1.0" pageId="95" unit="m" value="1100.0" valueMax="1200.0" valueMin="1000.0">10001200 m</elevation>
</quantity>
elev.,
<date box="[424,596,806,832]" pageId="95" value="2021-03-24">
<collectingDate box="[424,596,806,832]" pageId="95" value="2021-03-24">24 March 2021</collectingDate>
</date>
,
<emphasis box="[605,1120,806,833]" italics="true" pageId="95">
<collectorName box="[605,717,807,833]" pageId="95">Dang V.S.</collectorName>
,
<collectorName box="[727,859,807,832]" pageId="95">Truong B.V.</collectorName>
&amp;
<collectorName box="[892,1001,807,832]" pageId="95">Le T.K.N.</collectorName>
,
<location LSID="urn:lsid:plazi:treatment:43284262FFC0FF815AB6FDD740EDC914:CE5EA5AFFFC0FF8159CCFC824416CF08" box="[1010,1072,807,832]" country="Vietnam" county="Lac Duong District" municipality="Kon Ka Kinh National Park" name="Dang" pageId="95" stateProvince="Lam Dong">Dang</location>
428
</emphasis>
(
<collectionCode box="[1134,1205,806,832]" country="Viet Nam" httpUri="http://grbio.org/cool/tj07-dt2h" name="Institute of Tropical Biology" pageId="95" type="Herbarium">VNM</collectionCode>
); in the same location,
<location LSID="urn:lsid:plazi:treatment:43284262FFC0FF815AB6FDD740EDC914:CE5EA5AFFFC0FF815AB6FCEE41E5CF2C" box="[136,451,842,869]" country="Vietnam" county="Lac Duong District" municipality="Kon Ka Kinh National Park" name="Kon Ka Kinh National Park" pageId="95" stateProvince="Lam Dong">Kon Ka Kinh National Park</location>
,
<quantity box="[463,548,842,869]" metricMagnitude="3" metricUnit="m" metricValue="1.3199999999999998" pageId="95" unit="m" value="1320.0">
<elevation box="[463,548,842,869]" metricMagnitude="3" metricUnit="m" metricValue="1.3199999999999998" pageId="95" unit="m" value="1320.0">1320 m</elevation>
</quantity>
elev.,
<date box="[620,794,842,869]" pageId="95" value="2021-03-25">
<collectingDate box="[620,794,842,869]" pageId="95" value="2021-03-25">25 March 2021</collectingDate>
</date>
,
<emphasis box="[805,1242,842,869]" italics="true" pageId="95">
<collectorName box="[805,917,843,869]" pageId="95">Dang V.S.</collectorName>
&amp;
<collectorName box="[952,1087,843,868]" pageId="95">Truong B.V.</collectorName>
,
<collectorName box="[1098,1160,843,868]" pageId="95">Dang</collectorName>
428bis
</emphasis>
(
<collectionCode box="[1257,1328,842,868]" country="Viet Nam" httpUri="http://grbio.org/cool/tj07-dt2h" name="Institute of Tropical Biology" pageId="95" type="Herbarium">VNM</collectionCode>
)
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection pageId="95" type="distribution">
<paragraph blockId="95.[136,1452,734,1372]" pageId="95">
<emphasis bold="true" box="[189,345,878,904]" pageId="95">Distribution:</emphasis>
—Endemic to
<collectingCountry box="[518,613,878,904]" name="Vietnam" pageId="95">Vietnam</collectingCountry>
(currently known as
<collectingRegion box="[870,976,879,905]" country="Vietnam" name="Da Nang" pageId="95">Da Nang</collectingRegion>
City,
<collectingRegion box="[1053,1257,878,904]" country="Vietnam" name="Gia Lai" pageId="95">Gia Lai Province</collectingRegion>
, and
<collectingRegion country="Vietnam" name="Lam Dong" pageId="95">Lam Dong Province</collectingRegion>
).
</paragraph>
<paragraph blockId="95.[136,1452,734,1372]" pageId="95">
<emphasis bold="true" box="[189,422,950,976]" pageId="95">Habitat &amp; Ecology:</emphasis>
—Growing under a canopy of the evergreen montane forest at
<quantity box="[1118,1273,950,977]" metricMagnitude="3" metricUnit="m" metricValue="1.2" metricValueMax="1.4" metricValueMin="1.0" pageId="95" unit="m" value="1200.0" valueMax="1400.0" valueMin="1000.0">10001400 m</quantity>
elev. It is found in the natural habitats where dominated by species of
<taxonomicName box="[769,889,986,1012]" class="Magnoliopsida" family="Rubiaceae" kingdom="Plantae" order="Gentianales" pageId="95" phylum="Tracheophyta" rank="family">Rubiaceae</taxonomicName>
,
<taxonomicName box="[903,1072,986,1012]" class="Magnoliopsida" family="Euphorbiaceae" kingdom="Plantae" order="Malpighiales" pageId="95" phylum="Tracheophyta" rank="family">Euphorbiaceae</taxonomicName>
,
<taxonomicName authorityName="Dumortier" authorityYear="1829" box="[1086,1193,987,1013]" class="Magnoliopsida" family="Fagaceae" kingdom="Plantae" order="Fagales" pageId="95" phylum="Tracheophyta" rank="family">Fagaceae</taxonomicName>
,
<taxonomicName box="[1208,1315,986,1012]" class="Magnoliopsida" family="Fabaceae" kingdom="Plantae" order="Fabales" pageId="95" phylum="Tracheophyta" rank="family">Fabaceae</taxonomicName>
,
<taxonomicName box="[1329,1447,987,1013]" class="Magnoliopsida" family="Lauraceae" kingdom="Plantae" order="Laurales" pageId="95" phylum="Tracheophyta" rank="family">Lauraceae</taxonomicName>
,
<taxonomicName box="[136,279,1022,1048]" class="Magnoliopsida" family="Sapindaceae" kingdom="Plantae" order="Sapindales" pageId="95" phylum="Tracheophyta" rank="family">Sapindaceae</taxonomicName>
,
<taxonomicName authorityName="Martinov" authorityYear="1820" box="[290,462,1022,1048]" class="Magnoliopsida" family="Phyllanthaceae" kingdom="Plantae" order="Malpighiales" pageId="95" phylum="Tracheophyta" rank="family">Phyllanthaceae</taxonomicName>
,
<taxonomicName box="[474,586,1022,1048]" class="Magnoliopsida" family="Ericaceae" kingdom="Plantae" order="Ericales" pageId="95" phylum="Tracheophyta" rank="family">Ericaceae</taxonomicName>
,
<taxonomicName box="[596,702,1023,1049]" class="Magnoliopsida" family="Rutaceae" kingdom="Plantae" order="Sapindales" pageId="95" phylum="Tracheophyta" rank="family">Rutaceae</taxonomicName>
,
<taxonomicName box="[713,831,1022,1048]" class="Magnoliopsida" family="Meliaceae" kingdom="Plantae" order="Sapindales" pageId="95" phylum="Tracheophyta" rank="family">Meliaceae</taxonomicName>
, and
<taxonomicName box="[889,1054,1022,1048]" class="Magnoliopsida" family="Symplocaceae" kingdom="Plantae" order="Ericales" pageId="95" phylum="Tracheophyta" rank="family">Symplocaceae</taxonomicName>
.
</paragraph>
<paragraph blockId="95.[136,1452,734,1372]" box="[189,936,1058,1085]" pageId="95">
<emphasis bold="true" box="[189,323,1058,1084]" pageId="95">Phenology:</emphasis>
—Flowering and fruiting from February to September.
</paragraph>
<paragraph blockId="95.[136,1452,734,1372]" box="[189,649,1094,1123]" pageId="95">
<emphasis bold="true" box="[189,405,1094,1120]" pageId="95">Vernacular name:</emphasis>
—Xú hưƠng lecomte.
</paragraph>
<paragraph blockId="95.[136,1452,734,1372]" pageId="95">
<emphasis bold="true" box="[189,265,1130,1156]" pageId="95">Notes:</emphasis>
<taxonomicName box="[294,521,1130,1156]" class="Magnoliopsida" family="Rubiaceae" genus="Lasianthus" kingdom="Plantae" order="Gentianales" pageId="95" phylum="Tracheophyta" rank="species" species="lecomtei">
<emphasis box="[294,521,1130,1156]" italics="true" pageId="95">Lasianthus lecomtei</emphasis>
</taxonomicName>
was described as new from a Vietnamese specimen by Pitard (
<emphasis italics="true" pageId="95">Lecomte &amp; Finet 1316</emphasis>
). It is characterized by having ovate to oblong-lanceolate leaves, secondary veins 69 on each side of midrib, bracts linear and
<quantity box="[328,435,1202,1229]" metricMagnitude="-3" metricUnit="m" metricValue="8.5" metricValueMax="10.0" metricValueMin="7.0" pageId="95" unit="mm" value="8.5" valueMax="10.0" valueMin="7.0">710 mm</quantity>
long, calyx lobes 4, and fruits ellipsoid, pyrenes 4.
</paragraph>
<paragraph blockId="95.[136,1452,734,1372]" pageId="95">
<taxonomicName box="[189,413,1238,1264]" class="Magnoliopsida" family="Rubiaceae" genus="Lasianthus" kingdom="Plantae" order="Gentianales" pageId="95" phylum="Tracheophyta" rank="species" species="lecomtei">
<emphasis box="[189,413,1238,1264]" italics="true" pageId="95">Lasianthus lecomtei</emphasis>
</taxonomicName>
is similar to
<taxonomicName authority="K. Schum. (1902: 340)" authorityName="K. Schum." authorityPageNumber="340" authorityYear="1902" box="[556,941,1238,1264]" class="Magnoliopsida" family="Rubiaceae" genus="Lasianthus" kingdom="Plantae" order="Gentianales" pageId="95" phylum="Tracheophyta" rank="species" species="schmidtii">
<emphasis box="[556,687,1238,1264]" italics="true" pageId="95">L. schmidtii</emphasis>
K.Schum. (1902: 340)
</taxonomicName>
(synonym:
<taxonomicName authority="Craib [1911: 396]" authorityName="Craib" authorityPageNumber="396" authorityYear="1911" box="[1073,1369,1238,1264]" class="Magnoliopsida" family="Rubiaceae" genus="Lasianthus" kingdom="Plantae" order="Gentianales" pageId="95" phylum="Tracheophyta" rank="species" species="kerrii">
<emphasis box="[1073,1164,1238,1264]" italics="true" pageId="95">L. kerrii</emphasis>
Craib [1911: 396]
</taxonomicName>
) which was distributed in
<collectingCountry box="[339,409,1274,1300]" name="China" pageId="95">China</collectingCountry>
,
<collectingCountry box="[419,521,1274,1300]" name="Thailand" pageId="95">Thailand</collectingCountry>
, and
<collectingCountry box="[577,675,1274,1300]" name="Vietnam" pageId="95">Vietnam</collectingCountry>
, but differs from the latter in having ovate to oblong-lanceolate leaves (vs. oblong to elliptic-lanceolate), apex acuminate to caudate (vs. apex acuminate) and styles
<quantity box="[1203,1269,1310,1337]" metricMagnitude="-3" metricUnit="m" metricValue="8.0" pageId="95" unit="mm" value="8.0">8 mm</quantity>
long (vs.
<quantity box="[1385,1452,1310,1337]" metricMagnitude="-3" metricUnit="m" metricValue="3.0" pageId="95" unit="mm" value="3.0">3 mm</quantity>
long).
</paragraph>
</subSubSection>
</treatment>
</document>