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<document id="FABC7EAFA5D36C435C3D6AE329A39C59" ID-DOI="10.11646/phytotaxa.280.3.1" ID-ISSN="1179-3163" ID-Zenodo-Dep="13645631" IM.bibliography_approvedBy="felipe" IM.illustrations_approvedBy="felipe" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" IM.treatments_approvedBy="felipe" checkinTime="1725371123724" checkinUser="felipe" docAuthor="Han, Meng-Qi, Liu, Yan &amp; Zhang, Li-Bing" docDate="2016" docId="03AD87ED0425FFCD6E85FF5DBEA7FA15" docLanguage="en" docName="phytotaxa.280.3.1.pdf" docOrigin="Phytotaxa 280 (3)" docSource="http://dx.doi.org/10.11646/phytotaxa.280.3.1" docStyle="DocumentStyle:96748F8F1B6C902996E134952A3A36B9.13:Phytotaxa.2014-.journal_article" docStyleId="96748F8F1B6C902996E134952A3A36B9" docStyleName="Phytotaxa.2014-.journal_article" docStyleVersion="13" docTitle="Polystichum membranifolium Li Bing Zhang, M. Q. Han &amp; Yan Liu 2016, sp. nov." docType="treatment" docVersion="2" lastPageNumber="209" masterDocId="FF94FF950422FFC56E0DFFC3BE7CFFB0" masterDocTitle="Seven new species of Polystichum (subg. Haplopolystichum; Dryopteridaceae) from southern China" masterLastPageNumber="221" masterPageNumber="201" pageNumber="208" updateTime="1725373609420" updateUser="ExternalLinkService" zenodo-license-figures="UNSPECIFIED" zenodo-license-treatments="UNSPECIFIED">
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<mods:title id="067A090C82E0C96DE2CD5776530E7294">Seven new species of Polystichum (subg. Haplopolystichum; Dryopteridaceae) from southern China</mods:title>
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<mods:namePart id="8498DAC56A5CBCEF332337B3EC5B9E1C">Han, Meng-Qi</mods:namePart>
<mods:affiliation id="53B48F1B37CEF4D63ECED5112CE45DB8">Guangxi Institute of Botany, Guangxi Zhuangzu Autonomous Region and the Chinese Academy of Sciences, Guilin, Guangxi 541006, China &amp; College of Life Sciences, Guangxi Normal University, 541004, Guilin, China</mods:affiliation>
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<mods:namePart id="99D8D9722A7968D4DA2D731BD86CD9E6">Liu, Yan</mods:namePart>
<mods:affiliation id="05B5D595BD2950E93BB82571813BF099">Guangxi Institute of Botany, Guangxi Zhuangzu Autonomous Region and the Chinese Academy of Sciences, Guilin, Guangxi 541006, China</mods:affiliation>
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<mods:namePart id="D8834AE73FDABE57ADFA720E1EFF97D7">Zhang, Li-Bing</mods:namePart>
<mods:affiliation id="CD776E574EC977D4D50774827C0432E0">Missouri Botanical Garden, P. O. Box 299, St. Louis, Missouri 63166 - 0299, U. S. A. and Chengdu Institute of Biology, Chinese Academy of Sciences, P. O. Box 416, Chengdu, Sichuan 610041, China</mods:affiliation>
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<mods:date id="B102AA8CD0BE049BED7FDBD613BAA2E5">2016</mods:date>
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<taxonomicName id="4C044D780425FFC26E85FF5DBDF8FF09" authority="Li Bing Zhang, M.Q.Han &amp; Yan Liu" authorityName="Li Bing Zhang, M. Q. Han &amp; Yan Liu" authorityYear="2016" box="[136,900,158,185]" class="Polypodiopsida" family="Dryopteridaceae" genus="Polystichum" kingdom="Plantae" order="Polypodiales" pageId="7" pageNumber="208" phylum="Tracheophyta" rank="species" species="membranifolium" status="sp. nov.">
<emphasis id="B970EAE90425FFC26E85FF5DBF9DFF09" bold="true" box="[136,481,158,185]" italics="true" pageId="7" pageNumber="208">Polystichum membranifolium</emphasis>
Li Bing Zhang, M.Q.Han &amp; Yan Liu
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,
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<taxonomicNameLabel id="A24357920425FFC26D82FF63BD98FF09" box="[911,996,160,185]" pageId="7" pageNumber="208" rank="species">sp. nov.</taxonomicNameLabel>
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(
<figureCitation id="133F2A7E0425FFC26DFFFF63BA22FF09" box="[1010,1118,160,185]" captionStart="FIGURE 5" captionStartId="6.[136,229,2005,2026]" captionTargetBox="[157,1431,323,1976]" captionTargetId="figure-80@6.[151,1436,317,1980]" captionTargetPageId="6" captionText="FIGURE 5. Polystichum membranifolium.—A. Inside view of the cave where the new species was discovered.—BD. Habitats and plants.—E, F. Portions of abaxial lamina.—G. Stipes.—H. Equatorial view of spore under SEM." figureDoi="http://doi.org/10.5281/zenodo.13645647" httpUri="https://zenodo.org/record/13645647/files/figure.png" pageId="7" pageNumber="208">Figures 5</figureCitation>
,
<figureCitation id="133F2A7E0425FFC26A67FF63BA05FF09" box="[1130,1145,160,185]" captionStart="FIGURE 6" captionStartId="7.[136,229,2000,2021]" captionTargetBox="[151,1417,426,1971]" captionTargetId="figure-113@7.[151,1436,425,1975]" captionTargetPageId="7" captionText="FIGURE 6. Polystichum membranifolium.—A. Habit.—B. Portion of abaxial lamina." figureDoi="http://doi.org/10.5281/zenodo.13645651" httpUri="https://zenodo.org/record/13645651/files/figure.png" pageId="7" pageNumber="208">6</figureCitation>
)
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Type:—
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.
<collectingRegion id="49C0F8190425FFC26F23FF29BF07FF4F" box="[302,379,234,255]" country="China" name="Yunnan" pageId="7" pageNumber="208">Yunnan</collectingRegion>
: Wenshan City, Gumu Town, Tianwei Village, inside a limestone cave, elev.
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,
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23°09
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29
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N
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,
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104°11
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21
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E
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,
<date id="FFBA103B0425FFC26ED5FECDBF23FE93" box="[216,351,270,291]" pageId="7" pageNumber="208" value="2015-04-21">21 April 2015</date>
,
<emphasis id="B970EAE90425FFC26F64FECDBC8AFE93" box="[361,758,270,291]" italics="true" pageId="7" pageNumber="208">Mengqi Han &amp; Jinquan Huang HMQ148</emphasis>
(
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!,
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!,
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!,
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!)
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Diagnosis:—
<taxonomicName id="4C044D780425FFC26F0AFEF1BC5EFEF7" box="[263,546,306,327]" class="Polypodiopsida" family="Dryopteridaceae" genus="Polystichum" kingdom="Plantae" order="Polypodiales" pageId="7" pageNumber="208" phylum="Tracheophyta" rank="species" species="membranifolium">
<emphasis id="B970EAE90425FFC26F0AFEF1BC5EFEF7" box="[263,546,306,327]" italics="true" pageId="7" pageNumber="208">Polystichum membranifolium</emphasis>
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is most similar to
<taxonomicName id="4C044D780425FFC26CD9FEF1BDA2FEF7" authority="Christ (1906: 238)" authorityName="Christ" authorityPageNumber="238" authorityYear="1906" box="[724,990,306,327]" class="Polypodiopsida" family="Dryopteridaceae" genus="Polystichum" kingdom="Plantae" order="Polypodiales" pageId="7" pageNumber="208" phylum="Tracheophyta" rank="species" species="dielsii">
<emphasis id="B970EAE90425FFC26CD9FEF1BD5BFEF7" box="[724,807,306,327]" italics="true" pageId="7" pageNumber="208">P. dielsii</emphasis>
<bibRefCitation id="EF954B0A0425FFC26D21FEF1BDA2FEF7" author="Christ, H." box="[812,990,306,327]" pageId="7" pageNumber="208" pagination="233 - 252" refId="ref7715" refString="Christ, H. (1906) Filices Cavalerianae II. Bulletin de l'Academie Internationale de Geographie Botanique 16 (205 - 206): 233 - 252." type="journal article" year="1906">Christ (1906: 238)</bibRefCitation>
</taxonomicName>
in having oblong and often reflexed pinnae, but the former has membranous pinnae, spinulose pinna margins, and entire indusia, while the latter has papery pinnae, pinna margins without spinules, and toothed indusia.
</paragraph>
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<paragraph id="8BBB36FB0425FFC26E85F813BDB8F855" blockId="7.[136,964,2000,2021]" box="[136,964,2000,2021]" pageId="7" pageNumber="208">
<emphasis id="B970EAE90425FFC26E85F813BE81F855" bold="true" box="[136,253,2000,2021]" pageId="7" pageNumber="208">FIGURE 6.</emphasis>
<taxonomicName id="4C044D780425FFC26F0EF813BC63F855" box="[259,543,2000,2021]" class="Polypodiopsida" family="Dryopteridaceae" genus="Polystichum" kingdom="Plantae" order="Polypodiales" pageId="7" pageNumber="208" phylum="Tracheophyta" rank="species" species="membranifolium">
<emphasis id="B970EAE90425FFC26F0EF813BC63F855" box="[259,543,2000,2021]" italics="true" pageId="7" pageNumber="208">Polystichum membranifolium</emphasis>
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.—A. Habit.—B. Portion of abaxial lamina.
</paragraph>
</caption>
<paragraph id="8BBB36FB042AFFCD6E85FF63BE97FC39" blockId="8.[136,1452,160,1445]" pageId="8" pageNumber="209">
Plants perennial, evergreen,
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tall. Rhizomes ascending,
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long, ca.
<quantity id="4CFC9B1E042AFFCD6A38FF63BAFCFF09" box="[1077,1152,160,185]" metricMagnitude="-2" metricUnit="m" metricValue="1.7" pageId="8" pageNumber="209" unit="cm" value="1.7">1.7 cm</quantity>
diam., with remnant bases of old stipes; roots dull brown when dried,
<quantity id="4CFC9B1E042AFFCD6C68FF07BCBAFF6D" box="[613,710,196,221]" metricMagnitude="-2" metricUnit="m" metricValue="6.0" metricValueMax="10.0" metricValueMin="2.0" pageId="8" pageNumber="209" unit="cm" value="6.0" valueMax="10.0" valueMin="2.0">210 cm</quantity>
long, ca.
<quantity id="4CFC9B1E042AFFCD6D3CFF07BDFBFF6D" box="[817,903,196,221]" metricMagnitude="-4" metricUnit="m" metricValue="9.0" pageId="8" pageNumber="209" unit="mm" value="0.9">0.9 mm</quantity>
diam. Leaves in tufts, 812 per rhizome; petioles
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long, ca.
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diam., basal portions densely covered with scales, scales ovate to ovate-lanceolate, 1.72×
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, chartaceous, brown, margins with lighter color and short outgrowths to nearly entire, apex caudate; distal petiole scales similar but narrower and shorter, ovate-lanceolate to lanceolate, 11.5 ×
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, membranous, margins short-ciliate, apex caudate. Laminae oblanceolate, 1-pinnate, 713 ×
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, apex acuminate, yellowish green when dried; rachises
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diam., adaxially sulcate, scales of rachis similar to distal petiole scales but smaller, subulate to ovate-lanceolate, dull brown,
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long including tip,
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wide at base, margins regularly ciliate, apex long-caudate. Pinnae 2026 pairs, oblong, 0.50.9 ×
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, basalmost 36 pairs slightly smaller toward lamina base, basalmost pair about 2/3 as large as middle ones,
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apart, middle pairs
<quantity id="4CFC9B1E042AFFCD6B55FE27BED6FD91" metricMagnitude="-3" metricUnit="m" metricValue="3" metricValueMax="4.0" metricValueMin="2.0" pageId="8" pageNumber="209" unit="cm" value="0.3" valueMax="0.4" valueMin="0.2">0.20.4 cm</quantity>
apart, all pinnae membranous, alternate, basiscopic proximal margins entire, acroscopic margins and basiscopic distal margins toothed, teeth rounded and with spinules
<quantity id="4CFC9B1E042AFFCD6D0EFDEFBDF7FDF5" box="[771,907,556,581]" metricMagnitude="-4" metricUnit="m" metricValue="3" metricValueMax="4.0" metricValueMin="2.0" pageId="8" pageNumber="209" unit="mm" value="0.3" valueMax="0.4" valueMin="0.2">0.20.4 mm</quantity>
long, basiscopic margins forming a nearly right angle with rachis, apex rounded, base cuneate and asymmetric, acroscopic sides being much broader, petioles ca.
<quantity id="4CFC9B1E042AFFCD6E85FDB7BE9CFD3D" box="[136,224,628,653]" metricMagnitude="-4" metricUnit="m" metricValue="5.0" pageId="8" pageNumber="209" unit="mm" value="0.5">0.5 mm</quantity>
long, abaxially with sparse microscales, microscales subulate to lanceolate, light brown,
<quantity id="4CFC9B1E042AFFCD6AECFDB7BB16FD3D" box="[1249,1386,628,653]" metricMagnitude="-4" metricUnit="m" metricValue="6" metricValueMax="8.0" metricValueMin="4.0" pageId="8" pageNumber="209" unit="mm" value="0.6" valueMax="0.8" valueMin="0.4">0.40.8 mm</quantity>
long,
<quantity id="4CFC9B1E042AFFCD6E85FD5BBF72FD01" box="[136,270,664,689]" metricMagnitude="-4" metricUnit="m" metricValue="1.5" metricValueMax="2.0" metricValueMin="1.0" pageId="8" pageNumber="209" unit="mm" value="0.15" valueMax="0.2" valueMin="0.1">0.10.2 mm</quantity>
wide at base, margins with irregular outgrowths; adaxially glabrous; veins visible abaxially but somewhat obscure adaxially, lateral veins free, single or forked. Lower 58 pairs of pinnae sterile; sori terminal on lateral veins of fertile pinnae, 15(6) on acroscopic side of fertile pinnae, 01 on distal basiscopic side of fertile pinnae, ca.
<quantity id="4CFC9B1E042AFFCD6B84FD23BEC8FCAD" metricMagnitude="-4" metricUnit="m" metricValue="5.0" pageId="8" pageNumber="209" unit="mm" value="0.5">0.5 mm</quantity>
diam., closer to pinna margins than to midrib (centers of sori
<quantity id="4CFC9B1E042AFFCD6D60FCC7BD88FCAD" box="[877,1012,772,797]" metricMagnitude="-4" metricUnit="m" metricValue="5.5" metricValueMax="9.0" metricValueMin="2.0" pageId="8" pageNumber="209" unit="mm" value="0.55" valueMax="0.9" valueMin="0.2">0.20.9 mm</quantity>
from pinna margins,
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from midrib), centers
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apart from one another; indusia rounded, ca.
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diam., margins entire when young and falling when old. Spores round in polar view and elliptic in equatorial view; perispore sculpture cristate with numerous spinules.
</paragraph>
<paragraph id="8BBB36FB042AFFCD6EB0FC57BDAEFC61" blockId="8.[136,1452,160,1445]" pageId="8" pageNumber="209">
<emphasis id="B970EAE9042AFFCD6EB0FC57BF8FFC1D" bold="true" box="[189,499,916,941]" pageId="8" pageNumber="209">Geographical distribution</emphasis>
:—
<taxonomicName id="4C044D78042AFFCD6C1BFC57BD1CFC1D" box="[534,864,916,941]" class="Polypodiopsida" family="Dryopteridaceae" genus="Polystichum" kingdom="Plantae" order="Polypodiales" pageId="8" pageNumber="209" phylum="Tracheophyta" rank="species" species="membranifolium">
<emphasis id="B970EAE9042AFFCD6C1BFC57BD1CFC1D" box="[534,864,916,941]" italics="true" pageId="8" pageNumber="209">Polystichum membranifolium</emphasis>
</taxonomicName>
is only known from southeastern
<collectingRegion id="49C0F819042AFFCD6AD9FC57BB51FC1D" box="[1236,1325,916,941]" country="China" name="Yunnan" pageId="8" pageNumber="209">Yunnan</collectingRegion>
, Southwest
<collectingCountry id="F313766B042AFFCD6E85FC7BBEB3FC61" box="[136,207,952,977]" name="China" pageId="8" pageNumber="209">China</collectingCountry>
. It might be endemic to that limestone cave where it was discovered.
</paragraph>
</subSubSection>
<subSubSection id="C31E6570042AFFCD6EB0FC1FBE90FBD1" pageId="8" pageNumber="209" type="biology_ecology">
<paragraph id="8BBB36FB042AFFCD6EB0FC1FBF31FBA9" blockId="8.[136,1452,160,1445]" pageId="8" pageNumber="209">
<emphasis id="B970EAE9042AFFCD6EB0FC1FBF60FC45" bold="true" box="[189,284,988,1013]" pageId="8" pageNumber="209">Ecology</emphasis>
:—
<taxonomicName id="4C044D78042AFFCD6F4DFC1FBCF5FC45" box="[320,649,988,1013]" class="Polypodiopsida" family="Dryopteridaceae" genus="Polystichum" kingdom="Plantae" order="Polypodiales" pageId="8" pageNumber="209" phylum="Tracheophyta" rank="species" species="membranifolium">
<emphasis id="B970EAE9042AFFCD6F4DFC1FBCF5FC45" box="[320,649,988,1013]" italics="true" pageId="8" pageNumber="209">Polystichum membranifolium</emphasis>
</taxonomicName>
grows inside a limestone cave at an elevation of
<quantity id="4CFC9B1E042AFFCD6AA8FC1FBA84FC45" box="[1189,1272,988,1013]" metricMagnitude="3" metricUnit="m" metricValue="1.53" pageId="8" pageNumber="209" unit="m" value="1530.0">1530 m</quantity>
with humid and shady conditions.
</paragraph>
<paragraph id="8BBB36FB042AFFCD6EB0FBE7BE90FBD1" blockId="8.[136,1452,160,1445]" pageId="8" pageNumber="209">
<emphasis id="B970EAE9042AFFCD6EB0FBE7BF9FFB8D" bold="true" box="[189,483,1060,1085]" pageId="8" pageNumber="209">IUCN Red List category</emphasis>
:—CR-Critically Endangered: Only one population with about 200 plants was seen in the field.
</paragraph>
</subSubSection>
<subSubSection id="C31E6570042AFFCD6EB0FBAFBEA7FA15" pageId="8" pageNumber="209" type="etymology">
<paragraph id="8BBB36FB042AFFCD6EB0FBAFBD35FB19" blockId="8.[136,1452,160,1445]" pageId="8" pageNumber="209">
<emphasis id="B970EAE9042AFFCD6EB0FBAFBF42FB35" bold="true" box="[189,318,1132,1157]" pageId="8" pageNumber="209">Etymology</emphasis>
:—The species epithet is based on the Latin prefix,
<emphasis id="B970EAE9042AFFCD6D96FBAFBA6AFB35" box="[923,1046,1132,1157]" italics="true" pageId="8" pageNumber="209">membrani-</emphasis>
, membranous, and the Latin noun,
<emphasis id="B970EAE9042AFFCD6E85FB53BEACFB19" box="[136,208,1168,1193]" italics="true" pageId="8" pageNumber="209">folium</emphasis>
, leaf, referring to the membranous leaves of the species.
</paragraph>
<paragraph id="8BBB36FB042AFFCD6EB0FB77BFC7FA89" blockId="8.[136,1452,160,1445]" pageId="8" pageNumber="209">
<emphasis id="B970EAE9042AFFCD6EB0FB77BFF5FB7D" bold="true" box="[189,393,1204,1229]" pageId="8" pageNumber="209">Taxonomic notes</emphasis>
:—
<taxonomicName id="4C044D78042AFFCD6FA0FB77BC80FB7D" box="[429,764,1204,1229]" class="Polypodiopsida" family="Dryopteridaceae" genus="Polystichum" kingdom="Plantae" order="Polypodiales" pageId="8" pageNumber="209" phylum="Tracheophyta" rank="species" species="membranifolium">
<emphasis id="B970EAE9042AFFCD6FA0FB77BC80FB7D" box="[429,764,1204,1229]" italics="true" pageId="8" pageNumber="209">Polystichum membranifolium</emphasis>
</taxonomicName>
is similar to
<taxonomicName id="4C044D78042AFFCD6D93FB77BA3AFB7D" authorityName="Li Bing Zhang, M. Q. Han &amp; Yan Liu" authorityYear="2016" box="[926,1094,1204,1229]" class="Polypodiopsida" family="Dryopteridaceae" genus="Polystichum" kingdom="Plantae" order="Polypodiales" pageId="8" pageNumber="209" phylum="Tracheophyta" rank="species" species="crassirachis">
<emphasis id="B970EAE9042AFFCD6D93FB77BA3AFB7D" box="[926,1094,1204,1229]" italics="true" pageId="8" pageNumber="209">P. crassirachis</emphasis>
</taxonomicName>
(see above) in having toothed pinna margins, but the former has membranous pinnae, thinner rachises, and rounded pinna apices, while the latter has papery pinnae, thicker rachises, and acute pinna apices. The new species has the thinnest pinnae among the species in
<emphasis id="B970EAE9042AFFCD6E85FAE3BEDCFA89" box="[136,160,1312,1337]" italics="true" pageId="8" pageNumber="209">P.</emphasis>
subg.
<emphasis id="B970EAE9042AFFCD6EEBFAE3BFCFFA89" box="[230,435,1312,1337]" italics="true" pageId="8" pageNumber="209">Haplopolystichum</emphasis>
.
</paragraph>
<paragraph id="8BBB36FB042AFFCD6EB0FA87BEA7FA15" blockId="8.[136,1452,160,1445]" pageId="8" pageNumber="209">
<emphasis id="B970EAE9042AFFCD6EB0FA87BC43FAED" bold="true" box="[189,575,1348,1373]" pageId="8" pageNumber="209">Additional Specimen Examined</emphasis>
:—
<collectingCountry id="F313766B042AFFCD6C6CFA87BCC3FAED" box="[609,703,1348,1373]" name="China" pageId="8" pageNumber="209">CHINA</collectingCountry>
.
<collectingRegion id="49C0F819042AFFCD6CC0FA87BD5BFAED" box="[717,807,1348,1373]" country="China" name="Yunnan" pageId="8" pageNumber="209">Yunnan</collectingRegion>
: Wenshan City, Gumu Town, Tianwei Village, inside a limestone cave, elev.
<quantity id="4CFC9B1E042AFFCD6F76FAABBFAFFA31" box="[379,467,1384,1409]" metricMagnitude="3" metricUnit="m" metricValue="1.53" pageId="8" pageNumber="209" unit="m" value="1530.0">1530 m</quantity>
,
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23°09
<emphasis id="B970EAE9042AFFCD6C2EFAABBC55FA31" bold="true" box="[547,553,1384,1409]" italics="true" pageId="8" pageNumber="209"></emphasis>
29
<emphasis id="B970EAE9042AFFCD6C48FAABBC2DFA31" bold="true" box="[581,593,1384,1409]" italics="true" pageId="8" pageNumber="209"></emphasis>
N
</geoCoordinate>
,
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104°11
<emphasis id="B970EAE9042AFFCD6CC0FAABBCAFFA31" bold="true" box="[717,723,1384,1409]" italics="true" pageId="8" pageNumber="209"></emphasis>
21
<emphasis id="B970EAE9042AFFCD6CFAFAABBD7FFA31" bold="true" box="[759,771,1384,1409]" italics="true" pageId="8" pageNumber="209"></emphasis>
E
</geoCoordinate>
,
<date id="FFBA103B042AFFCD6D26FAABBDB7FA31" box="[811,971,1384,1409]" pageId="8" pageNumber="209" value="2015-04-21">21 April 2015</date>
,
<emphasis id="B970EAE9042AFFCD6DDAFAABBBD7FA31" box="[983,1451,1384,1409]" italics="true" pageId="8" pageNumber="209">Mengqi Han &amp; Jinquan Huang HMQ150</emphasis>
(IBK!).
</paragraph>
</subSubSection>
</treatment>
</document>