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<mods:title id="8BE8FCC89D9170DA158D0DD4CF49719E">Three new species and one new record of the fern genus Polystichum (Dryopteridaceae) from Vietnam</mods:title>
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<mods:namePart id="000219941AE9CB766289392C42DADBD4">Lu, Ngan Thi</mods:namePart>
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<mods:namePart id="911025ABC9A0976B07F57305A21D9CD4">Zhang, Liang</mods:namePart>
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<mods:affiliation id="9DA7D1EE3FAA4EAB1D529ED9119DC995">Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, China &amp; zhangliang @ mail. kib. ac. cn; https: // orcid. org / 0000 - 0003 - 3784 - 3135</mods:affiliation>
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<mods:affiliation id="CB661B35281221AD5D0D3DEF05654615">Faculty of Biology, VNU University of Science, 334 Nguyen Trai, Thanh Xuan, Hanoi, Vietnam &amp; thanhntsh @ gmail. com; https: // orcid. org / 0000 - 0003 - 4734 - 3775</mods:affiliation>
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<mods:namePart id="E4CFF3AAB0616FDB90805050D8A477AF">Toan, Le Chi</mods:namePart>
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<mods:affiliation id="6FD8E76C0E5A9A962319A890F4B99148">Department of Botany, Hanoi Pedagogical University 2, 32 Nguyen Van Linh, Xuan Hoa, Phuc Yen, Vietnam &amp; lechitoan @ hpu 2. edu. vn; https: // orcid. org / 0000 - 0002 - 5339 - 4440</mods:affiliation>
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<mods:namePart id="DE02A60A4A262A1613B09E6A16CE2E6B">Zhang, Li-Bing</mods:namePart>
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<mods:affiliation id="7199F34FD5EB65A761F169FC9ED72841">Missouri Botanical Garden, 4344 Shaw Blvd., St. Louis, Missouri 63110, U. S. A; Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, Sichuan 610041, China &amp; Libing. Zhang @ mobot. org; https: // orcid. org / 0000 - 0002 - 4905 - 040 X</mods:affiliation>
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<taxonomicName id="989B8AB3FFF5FFC592ACF9ABFD1A7680" ID-CoL="4LN4F" authority="C. Christensen (1906: 67)" authorityName="C. Christensen" authorityPageNumber="67" authorityYear="1906" box="[136,685,1652,1678]" class="Polypodiopsida" family="Dryopteridaceae" genus="Polystichum" kingdom="Plantae" order="Polypodiales" pageId="6" pageNumber="91" phylum="Tracheophyta" rank="species" species="omeiense">
<emphasis id="6DEF2D22FFF5FFC592ACF9ABFE367680" box="[136,385,1652,1678]" italics="true" pageId="6" pageNumber="91">Polystichum omeiense</emphasis>
C.
<bibRefCitation id="3B0A8CC1FFF5FFC5938DF9ABFD1A7680" author="Christensen, C." box="[425,685,1652,1678]" pageId="6" pageNumber="91" refId="ref4542" refString="Christensen, C. (1906) Index filicum. H. Hagerup, Copenhagen. 745 pp. https: // doi. org / 10.5962 / bhl. title. 402" type="book" year="1906">Christensen (1906: 67)</bibRefCitation>
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, cons. prop. (
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.)
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<emphasis id="6DEF2D22FFF5FFC592ACF960FF4276DB" bold="true" box="[136,245,1727,1749]" pageId="6" pageNumber="91">Basionym:</emphasis>
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<emphasis id="6DEF2D22FFF5FFC59329F91FFE6976DB" box="[269,478,1728,1749]" italics="true" pageId="6" pageNumber="91">Aspidium caruifolium</emphasis>
<bibRefCitation id="3B0A8CC1FFF5FFC593C0F91FFD2376DB" author="Baker, J. G." box="[484,660,1728,1750]" pageId="6" pageNumber="91" pagination="225 - 231" refId="ref4386" refString="Baker, J. G. (1888) On two recent collections of ferns from Western China. Journal of Botany, British and Foreign 26 (7): 225 - 231." type="journal article" year="1888">Baker (1888: 228)</bibRefCitation>
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<emphasis id="6DEF2D22FFF5FFC5908AF91FFC2D76DB" box="[686,922,1728,1749]" italics="true" pageId="6" pageNumber="91">Polystichum caruifolium</emphasis>
(Baker)
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.
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:—
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.
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:
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(
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1027
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(
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!;
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!)
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.
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<subSubSection id="1781A2BBFFF5FFC592ACF893FBF377A0" pageId="6" pageNumber="91" type="diagnosis">
<paragraph id="5F24F130FFF5FFC592ACF893FBF377A0" blockId="6.[136,1452,1868,1967]" pageId="6" pageNumber="91">
<emphasis id="6DEF2D22FFF5FFC592ACF893FEFA7768" bold="true" box="[136,333,1868,1894]" pageId="6" pageNumber="91">Main characters</emphasis>
(based on
<emphasis id="6DEF2D22FFF5FFC593ECF892FD117768" box="[456,678,1868,1894]" italics="true" pageId="6" pageNumber="91">N.T.Lu 35_HG2021</emphasis>
): Petiole scales not appressed; lamina tripinnate, narrowly elliptic or broadly elliptic-lanceolate, middle or upward broadest; pinnae approximate, about 28 pairs, pinnae below narrowed gradually toward lamina base; ultimate lobes linear; rachis scales ovate or lanceolate.
</paragraph>
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<subSubSection id="1781A2BBFFF4FFC49299FF41FF4271F2" pageId="7" pageNumber="92" type="discussion">
<paragraph id="5F24F130FFF4FFC49299FF41FAAD712A" blockId="7.[136,1452,158,617]" pageId="7" pageNumber="92">
<emphasis id="6DEF2D22FFF4FFC49299FF41FE9170B6" bold="true" box="[189,294,158,184]" pageId="7" pageNumber="92">Notes:—</emphasis>
This species is easily identifiable, as there are only two species in
<taxonomicName id="989B8AB3FFF4FFC491DEFF41FB3370B6" authorityName="Roth" authorityYear="1800" box="[1018,1156,158,184]" class="Polypodiopsida" family="Dryopteridaceae" genus="Polystichum" kingdom="Plantae" order="Polypodiales" pageId="7" pageNumber="92" phylum="Tracheophyta" rank="genus">
<emphasis id="6DEF2D22FFF4FFC491DEFF41FB3370B6" box="[1018,1156,158,184]" italics="true" pageId="7" pageNumber="92">Polystichum</emphasis>
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with linear ultimate lobes:
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<emphasis id="6DEF2D22FFF4FFC492ACFF1CFEBA70D2" box="[136,269,194,220]" italics="true" pageId="7" pageNumber="92">P. alcicorne</emphasis>
(
<bibRefCitation id="3B0A8CC1FFF4FFC4933FFF1DFE6D70D2" author="Baker, J. G." box="[283,474,194,220]" pageId="7" pageNumber="92" pagination="225 - 231" refId="ref4386" refString="Baker, J. G. (1888) On two recent collections of ferns from Western China. Journal of Botany, British and Foreign 26 (7): 225 - 231." type="journal article" year="1888">Baker 1888: 229</bibRefCitation>
)
<bibRefCitation id="3B0A8CC1FFF4FFC493CCFF1DFD1A70D2" author="Diels, L." box="[488,685,194,220]" pageId="7" pageNumber="92" pagination="169 - 320" refId="ref4575" refString="Diels, L. (1900) Die Flora von Central-China. Botanische Jahrbucher fur Systematik, Pflanzengeschichte und Pflanzengeographie 29 (2): 169 - 320." type="journal article" year="1900">Diels (1900: 194)</bibRefCitation>
</taxonomicName>
and
<taxonomicName id="989B8AB3FFF4FFC490C7FF1CFCD170D2" authorityName="C. Christensen" authorityYear="1906" box="[739,870,195,220]" class="Polypodiopsida" family="Dryopteridaceae" genus="Polystichum" kingdom="Plantae" order="Polypodiales" pageId="7" pageNumber="92" phylum="Tracheophyta" rank="species" species="omeiense">
<emphasis id="6DEF2D22FFF4FFC490C7FF1CFCD170D2" box="[739,870,195,220]" italics="true" pageId="7" pageNumber="92">P. omeiense</emphasis>
</taxonomicName>
. These linear-leaved species were both described in 1888 from
<collectingCountry id="278CB1A0FFF4FFC49321FF39FEFB710E" box="[261,332,230,256]" name="China" pageId="7" pageNumber="92">China</collectingCountry>
. The Vietnamese material of
<taxonomicName id="989B8AB3FFF4FFC490B0FF38FCAF710E" authorityName="C. Christensen" authorityYear="1906" box="[660,792,231,256]" class="Polypodiopsida" family="Dryopteridaceae" genus="Polystichum" kingdom="Plantae" order="Polypodiales" pageId="7" pageNumber="92" phylum="Tracheophyta" rank="species" species="omeiense">
<emphasis id="6DEF2D22FFF4FFC490B0FF38FCAF710E" box="[660,792,231,256]" italics="true" pageId="7" pageNumber="92">P. omeiense</emphasis>
</taxonomicName>
was not collected until 2021. It was first discovered in the Bat Dai Sons Cave where there were only few individuals. Its conservation in
<collectingCountry id="278CB1A0FFF4FFC49620FED5FBD4712A" box="[1028,1123,266,292]" name="Vietnam" pageId="7" pageNumber="92">Vietnam</collectingCountry>
needs attention.
</paragraph>
<paragraph id="5F24F130FFF4FFC49299FEF1FD6F71BA" blockId="7.[136,1452,158,617]" pageId="7" pageNumber="92">
<taxonomicName id="989B8AB3FFF4FFC49299FEF1FE007146" authorityName="C. Christensen" authorityYear="1906" box="[189,439,302,328]" class="Polypodiopsida" family="Dryopteridaceae" genus="Polystichum" kingdom="Plantae" order="Polypodiales" pageId="7" pageNumber="92" phylum="Tracheophyta" rank="species" species="omeiense">
<emphasis id="6DEF2D22FFF4FFC49299FEF1FE007146" box="[189,439,302,328]" italics="true" pageId="7" pageNumber="92">Polystichum omeiense</emphasis>
</taxonomicName>
is a member of
<emphasis id="6DEF2D22FFF4FFC4904BFEF0FD377146" box="[623,640,303,328]" italics="true" pageId="7" pageNumber="92">P</emphasis>
. sect.
<emphasis id="6DEF2D22FFF4FFC490ECFEF1FC077146" box="[712,944,302,328]" italics="true" pageId="7" pageNumber="92">Sphaenopolystichum</emphasis>
Ching ex W.M.Chu &amp; Z.R.He in
<bibRefCitation id="3B0A8CC1FFF4FFC49709FEF1FEB87162" author="Kung, H. - S. &amp; Chu, W. - M. &amp; He, Z. - R. &amp; Zhang, L. - B." pageId="7" pageNumber="92" pagination="1 - 246" refId="ref4687" refString="Kung, H. - S., Chu, W. - M., He, Z. - R. &amp; Zhang, L. - B. (2001) Polystichum. In: Wu, C. - Y. (Ed.) Flora Reipublicae Popularis Sinicae, vol. 5 (2). Science Press, Beijing, pp. 1 - 246." type="book chapter" year="2001">
Kung
<emphasis id="6DEF2D22FFF4FFC49757FEF0FA1B7146" box="[1395,1452,302,328]" italics="true" pageId="7" pageNumber="92">et al.</emphasis>
(2001: 223)
</bibRefCitation>
, a section with 13 species known so far (
<bibRefCitation id="3B0A8CC1FFF4FFC490CDFE8DFBA17162" author="Zhang, L. - B. &amp; Barrington, D. S." box="[745,1046,338,364]" pageId="7" pageNumber="92" pagination="629 - 713" refId="ref6175" refString="Zhang, L. - B. &amp; Barrington, D. S. (2013) Polystichum. In: Wu, Z. - Y., Raven, P. H. &amp; Hong, D. - Y. (Eds.) Flora of China, vols. 2 - 3. Science Press, Beijing &amp; Missouri Botanical Garden Press, St. Louis, pp. 629 - 713." type="book chapter" year="2013">Zhang &amp; Barrington 2013</bibRefCitation>
,
<bibRefCitation id="3B0A8CC1FFF4FFC49606FE8DFB5C7162" author="Wang, B. &amp; Sun, Q. - W. &amp; Wang, Z. - H. &amp; Chen, C. - L. &amp; Xu, W. - F. &amp; Zhang, L. - B." box="[1058,1259,338,364]" pageId="7" pageNumber="92" pagination="1" refId="ref5463" refString="Wang, B., Sun, Q. - W., Wang, Z. - H., Chen, C. - L., Xu, W. - F. &amp; Zhang, L. - B. (2022) Polystichum suiyangense (sect. Sphaenopolystichum, Dryopteridaceae), a new fern from Guizhou, China. Phytotaxa 567 (1): 093 - 099. https: // doi. org / 10.11646 / phytotaxa. 567.1.9" type="journal article" year="2022">
Wang
<emphasis id="6DEF2D22FFF4FFC49648FE8CFB117162" box="[1132,1190,338,364]" italics="true" pageId="7" pageNumber="92">et al.</emphasis>
2022
</bibRefCitation>
). There are three members in
<collectingCountry id="278CB1A0FFF4FFC49336FEA9FEC2719E" box="[274,373,374,400]" name="Vietnam" pageId="7" pageNumber="92">Vietnam</collectingCountry>
:
<taxonomicName id="989B8AB3FFF4FFC4935BFEA8FD51719E" authority="Ching (1949: 309)" authorityName="Ching" authorityPageNumber="309" authorityYear="1949" box="[383,742,374,400]" class="Polypodiopsida" family="Dryopteridaceae" genus="Polystichum" kingdom="Plantae" order="Polypodiales" pageId="7" pageNumber="92" phylum="Tracheophyta" rank="species" species="auriculum">
<emphasis id="6DEF2D22FFF4FFC4935BFEA8FDB9719E" box="[383,526,374,400]" italics="true" pageId="7" pageNumber="92">P. auriculum</emphasis>
<bibRefCitation id="3B0A8CC1FFF4FFC49031FEA9FD51719E" author="Ching, R. C." box="[533,742,374,400]" pageId="7" pageNumber="92" pagination="267 - 317" refId="ref4421" refString="Ching, R. C. (1949) The studies of Chinese ferns - XXXV. Bulletin of the Fan Memorial Institute of Biology 1 (3): 267 - 317." type="journal article" year="1949">Ching (1949: 309)</bibRefCitation>
</taxonomicName>
,
<taxonomicName id="989B8AB3FFF4FFC490D6FEA8FCC2719E" authorityName="C. Christensen" authorityYear="1906" box="[754,885,375,400]" class="Polypodiopsida" family="Dryopteridaceae" genus="Polystichum" kingdom="Plantae" order="Polypodiales" pageId="7" pageNumber="92" phylum="Tracheophyta" rank="species" species="omeiense">
<emphasis id="6DEF2D22FFF4FFC490D6FEA8FCC2719E" box="[754,885,375,400]" italics="true" pageId="7" pageNumber="92">P. omeiense</emphasis>
</taxonomicName>
, and
<taxonomicName id="989B8AB3FFF4FFC49197FEA8FBF1719E" box="[947,1094,374,400]" class="Polypodiopsida" family="Dryopteridaceae" genus="Polystichum" kingdom="Plantae" order="Polypodiales" pageId="7" pageNumber="92" phylum="Tracheophyta" rank="species" species="tonkinense">
<emphasis id="6DEF2D22FFF4FFC49197FEA8FBF1719E" box="[947,1094,374,400]" italics="true" pageId="7" pageNumber="92">P. tonkinense</emphasis>
</taxonomicName>
(Christ in
<bibRefCitation id="3B0A8CC1FFF4FFC4969AFEA9FF0471BA" author="Christ, H. &amp; Billet, A." pageId="7" pageNumber="92" pagination="255 - 278" refId="ref4502" refString="Christ, H. &amp; Billet, A. (1898) Note sur la flore du Haut-Tonkin. - Les cryptogames vasculaires par. Bulletin Scientifique de la France et de la Belgique 28: 255 - 278." type="journal article" year="1898">Christ &amp; Billet 1898: 268</bibRefCitation>
) W.M.Chu &amp; Z.R.He in
<bibRefCitation id="3B0A8CC1FFF4FFC493EDFE45FD6371BA" author="Kung, H. - S. &amp; Chu, W. - M. &amp; He, Z. - R. &amp; Zhang, L. - B." box="[457,724,410,436]" pageId="7" pageNumber="92" pagination="1 - 246" refId="ref4687" refString="Kung, H. - S., Chu, W. - M., He, Z. - R. &amp; Zhang, L. - B. (2001) Polystichum. In: Wu, C. - Y. (Ed.) Flora Reipublicae Popularis Sinicae, vol. 5 (2). Science Press, Beijing, pp. 1 - 246." type="book chapter" year="2001">
Kung
<emphasis id="6DEF2D22FFF4FFC4902BFE44FDF071BA" box="[527,583,410,436]" italics="true" pageId="7" pageNumber="92">et al.</emphasis>
(2001: 169)
</bibRefCitation>
.
</paragraph>
<paragraph id="5F24F130FFF4FFC49299FE61FF4271F2" blockId="7.[136,1452,158,617]" pageId="7" pageNumber="92">
The name
<taxonomicName id="989B8AB3FFF4FFC49317FE61FD9A71D6" authorityName="C. Christensen" authorityYear="1906" box="[307,557,446,472]" class="Polypodiopsida" family="Dryopteridaceae" genus="Polystichum" kingdom="Plantae" order="Polypodiales" pageId="7" pageNumber="92" phylum="Tracheophyta" rank="species" species="omeiense">
<emphasis id="6DEF2D22FFF4FFC49317FE61FD9A71D6" box="[307,557,446,472]" italics="true" pageId="7" pageNumber="92">Polystichum omeiense</emphasis>
</taxonomicName>
was proposed for conservation against
<taxonomicName id="989B8AB3FFF4FFC491CCFE60FB3171D6" authorityName="Diels" authorityYear="1900" baseAuthorityName="Baker" box="[1000,1158,446,472]" class="Polypodiopsida" family="Dryopteridaceae" genus="Polystichum" kingdom="Plantae" order="Polypodiales" pageId="7" pageNumber="92" phylum="Tracheophyta" rank="species" species="caruifolium">
<emphasis id="6DEF2D22FFF4FFC491CCFE60FB3171D6" box="[1000,1158,446,472]" italics="true" pageId="7" pageNumber="92">P. caruifolium</emphasis>
</taxonomicName>
in our earlier study (
<bibRefCitation id="3B0A8CC1FFF4FFC49754FE61FF5E71F2" author="Lu, T. N. &amp; Gao, X. - F. &amp; Zhang, L. - B." pageId="7" pageNumber="92" pagination="1468 - 1469" refId="ref4759" refString="Lu, T. N., Gao, X. - F. &amp; Zhang, L. - B. (2017) Proposal to conserve the name Polystichum omeiense against P. caruifolium (Dryopteridaceae). Taxon 66 (6): 1468 - 1469. https: // doi. org / 10.12705 / 666.15" type="journal article" year="2017">
Lu
<emphasis id="6DEF2D22FFF4FFC497B3FE60FF1271F2" italics="true" pageId="7" pageNumber="92">et al.</emphasis>
2017
</bibRefCitation>
).
</paragraph>
</subSubSection>
<subSubSection id="1781A2BBFFF4FFC49299FDDAFC887267" pageId="7" pageNumber="92" type="materials_examined">
<paragraph id="5F24F130FFF4FFC49299FDDAFC887267" blockId="7.[136,1452,158,617]" pageId="7" pageNumber="92">
<emphasis id="6DEF2D22FFF4FFC49299FDDAFD467211" bold="true" box="[189,753,517,544]" pageId="7" pageNumber="92">
Additional specimens examined:—
<collectingCountry id="278CB1A0FFF4FFC49047FDDAFD5B7211" box="[611,748,517,543]" name="Vietnam" pageId="7" pageNumber="92">VIETNAM</collectingCountry>
.
</emphasis>
<collectingRegion id="9D5F3FD2FFF4FFC490DFFDD9FC6B722E" box="[763,988,518,544]" country="Vietnam" name="Ha Giang" pageId="7" pageNumber="92">Ha Giang Province</collectingRegion>
: Dong Van District, Ta Lung commune, Ha Chua La Village, inside a cave,
<date id="2B25D7F0FFF4FFC49033FDF5FD3A724A" box="[535,653,554,580]" pageId="7" pageNumber="92" value="2021-06">June 2021</date>
,
<emphasis id="6DEF2D22FFF4FFC490BCFDF4FC1F724A" box="[664,936,554,580]" italics="true" pageId="7" pageNumber="92">
Ngan
<collectionCode id="398A69F5FFF4FFC490F9FDF4FD59724A" box="[733,750,555,580]" name="Tavera, Department of Geology and Geophysics" pageId="7" pageNumber="92">T</collectionCode>
. Lu 35_HG2021
</emphasis>
(
<collectionCode id="398A69F5FFF4FFC4919CFDF5FBAE724A" box="[952,1049,554,580]" country="Viet Nam" httpUri="http://grbio.org/cool/65ma-2bzq" name="Vietnam National Museum of Nature" pageId="7" pageNumber="92">VNMN</collectionCode>
!).
<emphasis id="6DEF2D22FFF4FFC49614FDF6FB23724D" bold="true" box="[1072,1172,553,579]" pageId="7" pageNumber="92">
<collectingCountry id="278CB1A0FFF4FFC49614FDF6FB38724D" box="[1072,1167,553,579]" name="China" pageId="7" pageNumber="92">CHINA</collectingCountry>
.
</emphasis>
<collectingRegion id="9D5F3FD2FFF4FFC496B8FDF5FAD2724A" box="[1180,1381,554,580]" country="China" name="Sichuan" pageId="7" pageNumber="92">Sichuan Province</collectingRegion>
: Emei mountain, 02 September, 2014,
<emphasis id="6DEF2D22FFF4FFC493C9FD90FD2F7266" box="[493,664,591,616]" italics="true" pageId="7" pageNumber="92">Xiao-Jie Li s.n.</emphasis>
(CSH05680!).
</paragraph>
</subSubSection>
</treatment>
</document>