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<mods:title id="F1563CB3AF85BE00397DE40120DA7516">Ixeridium malingheense (Asteraceae), a new species from southwestern Guizhou, China</mods:title>
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<mods:namePart id="4795F6510055145DB243E9E42419ECED">Yang, Long</mods:namePart>
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<mods:namePart id="9B02A488A220CA86FAEDD0FDAC5C3C82">Liu, Feng</mods:namePart>
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<mods:namePart id="1F5E62338FED0933685142764D43A61E">Li, Zhi</mods:namePart>
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<taxonomicName id="86D3CBB41278FFC4BB96A9F3FDC41E05" ID-CoL="CDFMW" authority="Z.Li & Q.Xu" authorityName="Z. Li & Q. Xu" box="[136,575,244,271]" class="Magnoliopsida" family="Asteraceae" genus="Ixeridium" kingdom="Plantae" order="Asterales" pageId="4" pageNumber="167" phylum="Tracheophyta" rank="species" species="malingheense" status="sp. nov.">
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<emphasis id="73A76C251278FFC4BB96A9F3FE591E04" bold="true" box="[136,418,244,271]" italics="true" pageId="4" pageNumber="167">Ixeridium malingheense</emphasis>
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Z.Li & Q.Xu
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</taxonomicName>
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,
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</emphasis>
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<figureCitation id="D9E8ACB21278FFC4B9B4A9F3FD0D1E05" box="[682,758,244,270]" captionStart="FIGURE 3" captionStartId="5.[136,229,1953,1975]" captionTargetBox="[151,1436,187,1925]" captionTargetId="figure-19@5.[151,1436,187,1925]" captionTargetPageId="5" captionText="FIGURE 3. A–I. Ixeridium malingheense Z.Li & Q.Xu, sp. nov.: A. habitat (Ma-ling River Canyon, Xingyi City, SW Guizhou, CHINA); B. Caespitose plants in the wild; C. habit; D. capitulum (top view); E. capitula (showing involucre); F. involucre; G. spatulate basal leaves with long petiole; H. capitula floret; I. achene with pappus. Photos by Zhi Li (A–B), Feng Liu (C–D, H), Long Yang (E–F, I), Qin Xu (G)." pageId="4" pageNumber="167">Figs. 3</figureCitation>
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&
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Ḣ岭河小äffi
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</heading>
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</paragraph>
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<emphasis id="73A76C251278FFC4BB96A847FF391E5E" bold="true" box="[136,194,320,341]" pageId="4" pageNumber="167">Type:</emphasis>
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—
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<collectingCountry id="39C4F0A71278FFC4BBC5A847FED21E5E" box="[219,297,320,341]" name="China" pageId="4" pageNumber="167">CHINA</collectingCountry>
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.
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, Xingyi City, Ma-ling River Canyon, growing on exposed limestone along river banks in the canyon,
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,
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, alt.
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,
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<date id="356D96F71278FFC4B92EA863FD3F1E72" box="[560,708,356,378]" pageId="4" pageNumber="167" value="2023-03-28">28 March 2023</date>
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,
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. Li &
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. Xu LZ-XQ2023032801 (
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!,
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!).
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—
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||||
<taxonomicName id="86D3CBB41278FFC4BA3FA8AFFDD51EC9" box="[289,558,424,450]" class="Magnoliopsida" family="Asteraceae" genus="Ixeridium" kingdom="Plantae" order="Asterales" pageId="4" pageNumber="167" phylum="Tracheophyta" rank="species" species="malingheense">
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<emphasis id="73A76C251278FFC4BA3FA8AFFDD51EC9" box="[289,558,424,450]" italics="true" pageId="4" pageNumber="167">Ixeridium malingheense</emphasis>
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</taxonomicName>
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is morphologically close to
|
||||
<taxonomicName id="86D3CBB41278FFC4B875A8AEFBFD1EC9" box="[875,1030,425,450]" class="Magnoliopsida" family="Asteraceae" genus="Ixeridium" kingdom="Plantae" order="Asterales" pageId="4" pageNumber="167" phylum="Tracheophyta" rank="species" species="yunnanense">
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<emphasis id="73A76C251278FFC4B875A8AEFBFD1EC9" box="[875,1030,425,450]" italics="true" pageId="4" pageNumber="167">I. yunnanense</emphasis>
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||||
</taxonomicName>
|
||||
but differs from the latter by its basal leaves 18–34 ×
|
||||
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, leaf blade spatulate or long-spatulate, petiole long, ca.
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, outer phyllaries 1-seriate, achene brown or pale brown, subfusiform, compressed, ca. 2.0–3.0 × 0.5–1.0 mm, with a beak
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long, and flowering period from March to May.
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</paragraph>
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Perennial herb,
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|
||||
tall, stem erect, slender. Roots fibrous and spreading. Branches diverging from the middle or basal half, sparse, glabrous, distantly leafy. Basal leaves crowded, usually present at anthesis, long-spatulate or spatulate, margin entire, apex acute and often mucronate, 18–34 ×
|
||||
<quantity id="862B1DD21278FFC4B8B7AB87FBE31D90" box="[937,1048,640,667]" metricMagnitude="-3" metricUnit="m" metricValue="9.0" metricValueMax="13.0" metricValueMin="5.0" pageId="4" pageNumber="167" unit="mm" value="9.0" valueMax="13.0" valueMin="5.0">5–13 mm</quantity>
|
||||
, undivided and semi-amplexicaule, laurel-green adaxially, light pink-green abaxially, base attenuated into a petiole-like portion, petiole
|
||||
<quantity id="862B1DD21278FFC4BFEFABA3FA901DB4" box="[1265,1387,676,703]" metricMagnitude="-2" metricUnit="m" metricValue="4.25" metricValueMax="5.5" metricValueMin="3.0" pageId="4" pageNumber="167" unit="mm" value="42.5" valueMax="55.0" valueMin="30.0">30–55 mm</quantity>
|
||||
long. Cauline leaves few, 2–5; undivided, linear-subulate and bract-like, petiolate, 7–40 ×
|
||||
<quantity id="862B1DD21278FFC4BF78ABCFFB321DE8" box="[1126,1225,712,739]" metricMagnitude="-3" metricUnit="m" metricValue="5.0" metricValueMax="7.0" metricValueMin="3.0" pageId="4" pageNumber="167" unit="mm" value="5.0" valueMax="7.0" valueMin="3.0">3–7 mm</quantity>
|
||||
, smaller than basal leaves, base semi-amplexicaule and slightly clasping, reduced, linear, and subsessile along the stem. Synflorescence corymbiform to paniculiform-corymbiform, with 7–32 capitula. Capitula liguliflorous with 6–7 florets, radiating, peduncle capillaceous. Involucre narrowly cylindrical,
|
||||
<quantity id="862B1DD21278FFC4B9E4AA33FCA01C44" box="[762,859,820,847]" metricMagnitude="-3" metricUnit="m" metricValue="5.5" metricValueMax="6.0" metricValueMin="5.0" pageId="4" pageNumber="167" unit="mm" value="5.5" valueMax="6.0" valueMin="5.0">5–6 mm</quantity>
|
||||
, phyllaries abaxially glabrous; outer phyllaries 5–7, ovate, ca.
|
||||
<quantity id="862B1DD21278FFC4BBE6AA5FFECC1C78" box="[248,311,856,883]" metricMagnitude="-3" metricUnit="m" metricValue="1.0" pageId="4" pageNumber="167" unit="mm" value="1.0">1 mm</quantity>
|
||||
long, apex acute, calyculate; inner phyllaries 5–6, linear-lanceolate,
|
||||
<quantity id="862B1DD21278FFC4BF54AA5FFB521C78" box="[1098,1193,856,883]" metricMagnitude="-3" metricUnit="m" metricValue="5.0" metricValueMax="6.0" metricValueMin="4.0" pageId="4" pageNumber="167" unit="mm" value="5.0" valueMax="6.0" valueMin="4.0">4–6 mm</quantity>
|
||||
long, white-margined, thick-keeled towards base, apex acute, minutely ciliolate at the apex. Florets ligulate 6–7, yellow, linear, apex 5-lobed, corolla
|
||||
<quantity id="862B1DD21278FFC4BBFEAAA7FEB41CB0" box="[224,335,928,955]" metricMagnitude="-3" metricUnit="m" metricValue="9.5" metricValueMax="10.0" metricValueMin="9.0" pageId="4" pageNumber="167" unit="mm" value="9.5" valueMax="10.0" valueMin="9.0">9–10 mm</quantity>
|
||||
long, tube
|
||||
<quantity id="862B1DD21278FFC4BAC9AAA7FD991CB0" box="[471,610,928,955]" metricMagnitude="-3" metricUnit="m" metricValue="3.0" metricValueMax="3.5" metricValueMin="2.5" pageId="4" pageNumber="167" unit="mm" value="3.0" valueMax="3.5" valueMin="2.5">2.5–3.5 mm</quantity>
|
||||
long. Anthers 2.0–
|
||||
<quantity id="862B1DD21278FFC4B85DAAA7FC601CB0" box="[835,923,928,955]" metricMagnitude="-3" metricUnit="m" metricValue="2.5" pageId="4" pageNumber="167" unit="mm" value="2.5">2.5 mm</quantity>
|
||||
long, filaments 2.0–
|
||||
<quantity id="862B1DD21278FFC4BF93AAA7FB1D1CB0" box="[1165,1254,928,955]" metricMagnitude="-3" metricUnit="m" metricValue="2.2" pageId="4" pageNumber="167" unit="mm" value="2.2">2.2 mm</quantity>
|
||||
long, appendage cylindrical, apex obtuse. Style branches ca.
|
||||
<quantity id="862B1DD21278FFC4B993AAC3FD1C1CD4" box="[653,743,964,991]" metricMagnitude="-3" metricUnit="m" metricValue="1.4" pageId="4" pageNumber="167" unit="mm" value="1.4">1.4 mm</quantity>
|
||||
long, papillate. Achenes brown or pale brown, subfusiform, compressed, 2.0–3.0 × 0.5–1.0 mm, apex attenuate into a slender
|
||||
<quantity id="862B1DD21278FFC4B875AAEFFC081B08" box="[875,1011,1000,1027]" metricMagnitude="-4" metricUnit="m" metricValue="5.0" metricValueMax="6.0" metricValueMin="4.0" pageId="4" pageNumber="167" unit="mm" value="0.5" valueMax="0.6" valueMin="0.4">0.4–0.6 mm</quantity>
|
||||
beak, ca.10 equal ribs, none winged, ± glabrous. Pappus straw-coloured bristles, 2.0–3.0 mm, 1-seriate, persistent.
|
||||
</paragraph>
|
||||
</subSubSection>
|
||||
<subSubSection id="09C9E3BC1278FFC4BBA3AD37FC021B65" pageId="4" pageNumber="167" type="etymology">
|
||||
<paragraph id="416CB0371278FFC4BBA3AD37FC021B65" blockId="4.[136,1452,424,1567]" pageId="4" pageNumber="167">
|
||||
<emphasis id="73A76C251278FFC4BBA3AD37FEB31B41" bold="true" box="[189,328,1072,1098]" pageId="4" pageNumber="167">Etymology:</emphasis>
|
||||
—The epithet indicates the
|
||||
<typeStatus id="9E680E951278FFC4B995AD36FD401B40" box="[651,699,1073,1099]" pageId="4" pageNumber="167">type</typeStatus>
|
||||
locality, Ma-ling River Canyon, Xingyi City,
|
||||
<collectingRegion id="83177ED51278FFC4BFC8AD37FA5C1B41" box="[1238,1447,1072,1098]" country="China" name="Guizhou" pageId="4" pageNumber="167">Guizhou Province</collectingRegion>
|
||||
,
|
||||
<collectingCountry id="39C4F0A71278FFC4BB96AD53FF341B65" box="[136,207,1108,1134]" name="China" pageId="4" pageNumber="167">China</collectingCountry>
|
||||
. The locality name is rendered as ‘Malinghe Canyon’ in Chinese pinyin.
|
||||
</paragraph>
|
||||
</subSubSection>
|
||||
<subSubSection id="09C9E3BC1278FFC4BBA3AD7FFE421914" pageId="4" pageNumber="167" type="distribution">
|
||||
<paragraph id="416CB0371278FFC4BBA3AD7FFC7F1BBD" blockId="4.[136,1452,424,1567]" pageId="4" pageNumber="167">
|
||||
<emphasis id="73A76C251278FFC4BBA3AD7FFE0F1B99" bold="true" box="[189,500,1144,1170]" pageId="4" pageNumber="167">Distribution and ecology:</emphasis>
|
||||
—The new species is currently only known from Xingyi City,
|
||||
<collectingRegion id="83177ED51278FFC4BFC8AD7FFA5C1B99" box="[1238,1447,1144,1170]" country="China" name="Guizhou" pageId="4" pageNumber="167">Guizhou Province</collectingRegion>
|
||||
,
|
||||
<collectingCountry id="39C4F0A71278FFC4BB96AD9BFF351BBD" box="[136,206,1180,1206]" name="China" pageId="4" pageNumber="167">China</collectingCountry>
|
||||
, at an altitude of ca.
|
||||
<specimenCount id="57D57BBE1278FFC4BAA8AD9BFDFF1BBC" box="[438,516,1180,1207]" count="890" pageId="4" pageNumber="167" type="generic">
|
||||
<quantity id="862B1DD21278FFC4BAA8AD9BFDFB1BBC" box="[438,512,1180,1207]" metricMagnitude="2" metricUnit="m" metricValue="8.9" pageId="4" pageNumber="167" unit="m" value="890.0">890 m</quantity>
|
||||
.
|
||||
</specimenCount>
|
||||
It grows on limestone near rivers.
|
||||
</paragraph>
|
||||
<paragraph id="416CB0371278FFC4BBA3ADC7FBF81BD0" blockId="4.[136,1452,424,1567]" box="[189,1027,1216,1243]" pageId="4" pageNumber="167">
|
||||
<emphasis id="73A76C251278FFC4BBA3ADC7FEB81BD1" bold="true" box="[189,323,1216,1242]" pageId="4" pageNumber="167">Phenology:</emphasis>
|
||||
—Flowering from March to May, fruiting from March to June.
|
||||
</paragraph>
|
||||
<paragraph id="416CB0371278FFC4BBA3ADE3FBC51BF5" blockId="4.[136,1452,424,1567]" box="[189,1086,1252,1279]" pageId="4" pageNumber="167">
|
||||
<emphasis id="73A76C251278FFC4BBA3ADE3FE6E1BF5" bold="true" box="[189,405,1252,1278]" pageId="4" pageNumber="167">Vernacular name:</emphasis>
|
||||
—Ḣ岭河小äffi, mǎ lǐng hé xiǎo kǔ mài in Chinese Pinyin.
|
||||
</paragraph>
|
||||
<paragraph id="416CB0371278FFC4BBA3AC0FFE421914" blockId="4.[136,1452,424,1567]" pageId="4" pageNumber="167">
|
||||
<emphasis id="73A76C251278FFC4BBA3AC0FFE4E1A29" bold="true" box="[189,437,1288,1314]" pageId="4" pageNumber="167">Conservation status:</emphasis>
|
||||
—
|
||||
<taxonomicName id="86D3CBB41278FFC4BACFAC0FFD1B1A29" box="[465,736,1288,1314]" class="Magnoliopsida" family="Asteraceae" genus="Ixeridium" kingdom="Plantae" order="Asterales" pageId="4" pageNumber="167" phylum="Tracheophyta" rank="species" species="malingheense">
|
||||
<emphasis id="73A76C251278FFC4BACFAC0FFD1B1A29" box="[465,736,1288,1314]" italics="true" pageId="4" pageNumber="167">Ixeridium malingheense</emphasis>
|
||||
</taxonomicName>
|
||||
is currently found only in the Ma-ling River Canyon, which is the
|
||||
<typeStatus id="9E680E951278FFC4BBAEAC2AFF1B1A4C" box="[176,224,1325,1351]" pageId="4" pageNumber="167">type</typeStatus>
|
||||
locality, and only one population of approximately 40 plants has been observed to date, making the population extremely rare. Owing to the lack of additional local studies, its status is considered “Data Deficient” (DD) according to the IUCN Red List Categories and Criteria (
|
||||
<bibRefCitation id="2542CDC61278FFC4B999AC73FCEB1A85" author="IUCN" box="[647,784,1396,1422]" pageId="4" pageNumber="167" refId="ref4089" refString="IUCN (2022) Guidelines for Using the IUCN Red List Categories and Criteria, Version 15.1. Prepared by the Standards and Petitions Subcommittee. Available from: https: // www. iucnredlist. org / resources / redlistguidelines (accessed 20 July 2022)" type="url" year="2022">IUCN 2022</bibRefCitation>
|
||||
). The area is, however, a scenic spot, and habitat disturbance by human activities, such as tourism, maintenance, building of roads and walking trails, may have a negative impact on the species, potentially fatally impacting the survival of its small population. This species, additionally, only grows on limestone near water, where its growth environment is easily affected; the conservation status of this species is, therefore, of great concern.
|
||||
</paragraph>
|
||||
</subSubSection>
|
||||
</treatment>
|
||||
</document>
|
||||
Loading…
Add table
Add a link
Reference in a new issue