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<document ID-DOI="http://dx.doi.org/10.3897/mycokeys.75.59600" ID-GBIF-Dataset="1040fd45-6383-49c8-8870-9eab143176b7" ID-PMC="PMC7744385" ID-Pensoft-Pub="1314-4049-75-145" ID-Pensoft-UUID="06DABE2E35D357019BD8C37331DB7A93" ID-PubMed="33343219" ModsDocID="1314-4049-75-145" checkinTime="1607628081674" checkinUser="pensoft" docAuthor="Wang, Chao-Qun, Zhang, Ming &amp; Li, Tai-Hui" docDate="2020" docId="96F628796B0F5C759C653097624A456A" docLanguage="en" docName="MycoKeys 75: 145-161" docOrigin="MycoKeys 75" docPubDate="2020-12-09" docSource="http://dx.doi.org/10.3897/mycokeys.75.59600" docTitle="Hygrocybe debilipes C. Q. Wang &amp; T. H. Li 2020, sp. nov." docType="treatment" docVersion="4" id="06DABE2E35D357019BD8C37331DB7A93" lastPageNumber="145" masterDocId="06DABE2E35D357019BD8C37331DB7A93" masterDocTitle="Three new species from Guangdong Province of China, and a molecular assessment of Hygrocybe subsection Hygrocybe" masterLastPageNumber="161" masterPageNumber="145" pageNumber="145" updateTime="1668136575437" updateUser="ExternalLinkService">
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo>
<mods:title>Three new species from Guangdong Province of China, and a molecular assessment of Hygrocybe subsection Hygrocybe</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Wang, Chao-Qun</mods:namePart>
<mods:affiliation>Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, Guangdong, China</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Zhang, Ming</mods:namePart>
<mods:affiliation>Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, Guangdong, China</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Li, Tai-Hui</mods:namePart>
<mods:affiliation>Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, Guangdong, China</mods:affiliation>
<mods:nameIdentifier type="email">mycolab@263.net</mods:nameIdentifier>
</mods:name>
<mods:typeOfResource>text</mods:typeOfResource>
<mods:relatedItem type="host">
<mods:titleInfo>
<mods:title>MycoKeys</mods:title>
</mods:titleInfo>
<mods:part>
<mods:date>2020</mods:date>
<mods:detail type="pubDate">
<mods:number>2020-12-09</mods:number>
</mods:detail>
<mods:detail type="volume">
<mods:number>75</mods:number>
</mods:detail>
<mods:extent unit="page">
<mods:start>145</mods:start>
<mods:end>161</mods:end>
</mods:extent>
</mods:part>
</mods:relatedItem>
<mods:location>
<mods:url>http://dx.doi.org/10.3897/mycokeys.75.59600</mods:url>
</mods:location>
<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">http://dx.doi.org/10.3897/mycokeys.75.59600</mods:identifier>
<mods:identifier type="Pensoft-Pub">1314-4049-75-145</mods:identifier>
<mods:identifier type="Pensoft-UUID">06DABE2E35D357019BD8C37331DB7A93</mods:identifier>
</mods:mods>
<treatment ID-GBIF-Taxon="170725630" LSID="urn:lsid:plazi:treatment:96F628796B0F5C759C653097624A456A" httpUri="http://treatment.plazi.org/id/96F628796B0F5C759C653097624A456A" lastPageNumber="145" pageId="0" pageNumber="145">
<subSubSection pageId="0" pageNumber="145" type="nomenclature">
<paragraph pageId="0" pageNumber="145">
<taxonomicName LSID="96F62879-6B0F-5C75-9C65-3097624A456A" authority="C. Q. Wang &amp; T. H. Li" authorityName="C. Q. Wang &amp; T. H. Li" authorityYear="2020" class="Agaricomycetes" family="Hygrophoraceae" genus="Hygrocybe" higherTaxonomySource="CoL" kingdom="Fungi" lsidName="Hygrocybe debilipes" order="Agaricales" pageId="0" pageNumber="145" phylum="Basidiomycota" rank="species" species="debilipes" status="sp. nov.">Hygrocybe debilipes C.Q. Wang &amp; T.H. Li</taxonomicName>
<taxonomicNameLabel pageId="0" pageNumber="145">sp. nov.</taxonomicNameLabel>
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Basidiomes of Hygrocybe species A Hygrocybe debilipes (GDGM 59314) B Hygrocybe debilipes (GDGM 57013) C Hygrocybe griseonigricans (GDGM 73527) D Hygrocybe griseonigricans (GDGM 81394) E Hygrocybe rubroconica (GDGM 45213) F Hygrocybe rubroconica (GDGM 45214)." figureDoi="10.3897/mycokeys.75.59600.figure3" httpUri="https://binary.pensoft.net/fig/484587" pageId="0" pageNumber="145">Figures 3A, B</figureCitation>
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Microscopic features Hygrocybe debilipes (GDGM 59314) A basidiospores B basidia C terminal cells of hymenophoral trama D terminal cells of pileipellis." figureDoi="10.3897/mycokeys.75.59600.figure4" httpUri="https://binary.pensoft.net/fig/484588" pageId="0" pageNumber="145">, 4</figureCitation>
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="145" type="typification">
<paragraph pageId="0" pageNumber="145">Typification.</paragraph>
<paragraph pageId="0" pageNumber="145">
China. Guangdong Province, Taishan City, Chuandao Town, Xiachuan Island, on a grassland, elev. ca. 50 m,
<geoCoordinate degrees="21" direction="north" minutes="37" orientation="latitude" precision="15" seconds="36" value="21.626667">21°37'36&quot;N</geoCoordinate>
,
<geoCoordinate degrees="112" direction="east" minutes="34" orientation="longitude" precision="15" seconds="30" value="112.575">112°34'30&quot;E</geoCoordinate>
, 17 July 2017, H. Huang, Q.J. Huang &amp; X.R. Zhong (GDGM59314, holotype!).
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="145" type="sequences ex holotype">
<paragraph pageId="0" pageNumber="145">Sequences ex holotype.</paragraph>
<paragraph pageId="0" pageNumber="145">MW001783 (ITS), MW007877 (LSU).</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="145" type="etymology">
<paragraph pageId="0" pageNumber="145">Etymology.</paragraph>
<paragraph pageId="0" pageNumber="145">
&quot;
<emphasis italics="true" pageId="0" pageNumber="145">debili</emphasis>
-&quot;: not strong, &quot;-
<emphasis italics="true" pageId="0" pageNumber="145">pes</emphasis>
&quot;: stipe. The species epithet &quot;
<taxonomicName authorityName="C. Q. Wang &amp; T. H. Li" authorityYear="2020" class="Agaricomycetes" family="Hygrophoraceae" genus="Hygrocybe" higherTaxonomySource="CoL" kingdom="Fungi" lsidName="Hygrocybe debilipes" order="Agaricales" pageId="0" pageNumber="145" phylum="Basidiomycota" rank="species" species="debilipes">
<emphasis italics="true" pageId="0" pageNumber="145">Hygrocybe debilipes</emphasis>
</taxonomicName>
&quot; (Lat.) refers to the fragile stipe of the new species.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="145" type="diagnosis">
<paragraph pageId="0" pageNumber="145">Diagnosis.</paragraph>
<paragraph pageId="0" pageNumber="145">
<taxonomicName authorityName="C. Q. Wang &amp; T. H. Li" authorityYear="2020" class="Agaricomycetes" family="Hygrophoraceae" genus="Hygrocybe" higherTaxonomySource="CoL" kingdom="Fungi" lsidName="Hygrocybe debilipes" order="Agaricales" pageId="0" pageNumber="145" phylum="Basidiomycota" rank="species" species="debilipes">
<emphasis italics="true" pageId="0" pageNumber="145">Hygrocybe debilipes</emphasis>
</taxonomicName>
differs from
<taxonomicName class="Agaricomycetes" family="Hygrophoraceae" higherTaxonomySource="GBIF,CoL" kingdom="Fungi" lsidName="H. singeri" order="Agaricales" pageId="0" pageNumber="145" phylum="Basidiomycota" rank="species" species="singeri">
<emphasis italics="true" pageId="0" pageNumber="145">H. singeri</emphasis>
</taxonomicName>
in having a smaller pileus, orange red to vivid red pileus before discoloration, pale yellow to light orange lamellae, a fragile and less sticky stipe, ellipsoid to oblong basidiospores, and the distribution in South China Sea islands.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="145" type="description">
<paragraph pageId="0" pageNumber="145">Description.</paragraph>
<paragraph pageId="0" pageNumber="145">
Pileus 5-12 mm diam., conical with an acute umbo when young, convex to hemispherical in age, inrolled at margin, orange red (8A7-8), red to vivid red (9A7-8, 9B7-8), blackening with injury or aging, sticky when moist, hygrophanous. Lamellae free, pale yellow (4A3) to light orange (5A4) when mature, blackening with injury or aging, up to 4 mm broad, distant, waxy, with 1-3 unequal lamellulae between two entire lamellae, with lighter color at lamellar edge. Stipe 22-45
<normalizedToken originalValue="×">x</normalizedToken>
2-5 mm, central, cylindrical, equal or slightly tapered at apex, fistulous, semitranslucent, usually too fragile to obtain a complete stipe base, pale yellow (4A3) to light orange (5A4) with white base, blackening with injury or aging, glabrous to fibrillose, moist.
</paragraph>
<paragraph pageId="0" pageNumber="145">
Basidiospores (7.5)8-11.5(12)
<normalizedToken originalValue="×">x</normalizedToken>
(4.5)5-7(7.5)
<normalizedToken originalValue="μm">μm</normalizedToken>
[mean length = 9.4
<normalizedToken originalValue="μm">μm</normalizedToken>
, mean width = 6
<normalizedToken originalValue="μm">μm</normalizedToken>
], Q = 1.3-1.8, Qm = 1.6, ellipsoid to oblong, smooth, thin-walled, hyaline. Basidia 32-53
<normalizedToken originalValue="×">x</normalizedToken>
8-13
<normalizedToken originalValue="μm">μm</normalizedToken>
, 4-spored, clavate, with sterigmata up to 7
<normalizedToken originalValue="μm">μm</normalizedToken>
long. Pileipellis a cutis of cylindrical hyphae 2-11
<normalizedToken originalValue="μm">μm</normalizedToken>
diam., thin-walled, hyaline. Stipitipellis a cutis or ixocutis of repent, thin-walled, clamped hyphae 2.5-16
<normalizedToken originalValue="μm">μm</normalizedToken>
diam. Hymenophoral trama regular to subregular, consisting of parallel hyphal cells 4-17
<normalizedToken originalValue="μm">μm</normalizedToken>
diam., thin-walled, hyaline.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="145" type="distribution">
<paragraph pageId="0" pageNumber="145">Habit, habitat and distribution.</paragraph>
<paragraph pageId="0" pageNumber="145">Scattered on grasslands in summer. Known from South China Sea islands.</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="145" type="materials_examined">
<paragraph pageId="0" pageNumber="145">Additional specimens examined.</paragraph>
<paragraph pageId="0" pageNumber="145">China. Guangdong Province, Taishan City, Chuandao Town, Xiachuan Island, elev. ca. 50 m, 17 July 2017, Q.J. Huang, H. Huang &amp; X.R. Zhong (GDGM59131, GDGM59133); Zhuhai City, Dawanshan Island, 28 July 2013, T.H. Li, H. Huang &amp; Y.W. Xia (GDGM57013).</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="145" type="remarks">
<paragraph pageId="0" pageNumber="145">Remarks.</paragraph>
<paragraph pageId="0" pageNumber="145">
<taxonomicName authorityName="C. Q. Wang &amp; T. H. Li" authorityYear="2020" class="Agaricomycetes" family="Hygrophoraceae" genus="Hygrocybe" higherTaxonomySource="CoL" kingdom="Fungi" lsidName="Hygrocybe debilipes" order="Agaricales" pageId="0" pageNumber="145" phylum="Basidiomycota" rank="species" species="debilipes">
<emphasis italics="true" pageId="0" pageNumber="145">Hygrocybe debilipes</emphasis>
</taxonomicName>
is morphologically and genetically a distinct species.
<taxonomicName authorityName="C. Q. Wang &amp; T. H. Li" authorityYear="2020" class="Agaricomycetes" family="Hygrophoraceae" genus="Hygrocybe" higherTaxonomySource="CoL" kingdom="Fungi" lsidName="Hygrocybe debilipes" order="Agaricales" pageId="0" pageNumber="145" phylum="Basidiomycota" rank="species" species="debilipes">
<emphasis italics="true" pageId="0" pageNumber="145">Hygrocybe debilipes</emphasis>
</taxonomicName>
is characterized by its tiny basidioma, orange red to vivid red pileus, pale yellow to light orange lamellae when mature, fragile and semitranslucent stipe, and ellipsoid to oblong basidiospores measuring (7.5)8-11.5(12)
<normalizedToken originalValue="×">x</normalizedToken>
(4.5)5-7(7.5)
<normalizedToken originalValue="μm">μm</normalizedToken>
.
<taxonomicName authorityName="C. Q. Wang &amp; T. H. Li" authorityYear="2020" class="Agaricomycetes" family="Hygrophoraceae" genus="Hygrocybe" higherTaxonomySource="CoL" kingdom="Fungi" lsidName="Hygrocybe debilipes" order="Agaricales" pageId="0" pageNumber="145" phylum="Basidiomycota" rank="species" species="debilipes">
<emphasis italics="true" pageId="0" pageNumber="145">Hygrocybe debilipes</emphasis>
</taxonomicName>
forms a strongly supported independent clade in both ITS and LSU phylogeny trees (Figs
<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Maximum Likelihood phylogram of genus Hygrocybe based on LSU matrix, rooted with Hygroaster albellus (EF 551314), H. nodulisporus (EF 561625) and H. andersonii (KF 291171). The newly generated sequences in this study are showed in bold. GenBank accession numbers of downloaded sequences or voucher numbers of new sequences are given after the species names. Bootstrap values more than 50 % are shown around the branches." figureDoi="10.3897/mycokeys.75.59600.figure1" httpUri="https://binary.pensoft.net/fig/484585" pageId="0" pageNumber="145">1</figureCitation>
-
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Maximum-likelihood tree of sect. Hygrocybe based on ITS matrix, rooted with members of subsect. Macrosporae. The newly generated sequences in this study are indicated in bold face. GenBank accession number of downloaded sequence or voucher number of newly generated sequence and place of origin are given after the species name of each sequence. Bootstrap values more than 50 % are shown around the branches." figureDoi="10.3897/mycokeys.75.59600.figure2" httpUri="https://binary.pensoft.net/fig/484586" pageId="0" pageNumber="145">2</figureCitation>
).
</paragraph>
<paragraph pageId="0" pageNumber="145">
<taxonomicName authorityName="Courtec. &amp; Priou" authorityYear="1992" class="Agaricomycetes" family="Hygrophoraceae" genus="Hygrocybe" higherTaxonomySource="CoL" kingdom="Fungi" lsidName="Hygrocybe cinereifolia" order="Agaricales" pageId="0" pageNumber="145" phylum="Basidiomycota" rank="species" species="cinereifolia">
<emphasis italics="true" pageId="0" pageNumber="145">Hygrocybe cinereifolia</emphasis>
</taxonomicName>
, originally described from France, is morphologically similar to
<taxonomicName class="Agaricomycetes" family="Hygrophoraceae" higherTaxonomySource="GBIF,CoL" kingdom="Fungi" lsidName="H. debilipes" order="Agaricales" pageId="0" pageNumber="145" phylum="Basidiomycota" rank="species" species="debilipes">
<emphasis italics="true" pageId="0" pageNumber="145">H. debilipes</emphasis>
</taxonomicName>
in its general appearance. However,
<taxonomicName class="Agaricomycetes" family="Hygrophoraceae" higherTaxonomySource="GBIF,CoL" kingdom="Fungi" lsidName="H. cinereifolia" order="Agaricales" pageId="0" pageNumber="145" phylum="Basidiomycota" rank="species" species="cinereifolia">
<emphasis italics="true" pageId="0" pageNumber="145">H. cinereifolia</emphasis>
</taxonomicName>
has larger basidiomata and grayish to gray lamellae (
<bibRefCitation author="Courtecuisse, R" journalOrPublisher="Documents Mycologiques" pageId="0" pageNumber="145" pagination="69 - 73" refId="B8" refString="Courtecuisse, R, 1992. Flore mycologique du littoral - 10 - Hygrocybe cinereifolia Courtecuisse &amp; Priou sp. nov. et quelques hygrocybes sabulicoles noircissants. Documents Mycologiques 22 (86): 69 - 73" title="Flore mycologique du littoral - 10 - Hygrocybe cinereifolia Courtecuisse &amp; Priou sp. nov. et quelques hygrocybes sabulicoles noircissants." volume="22" year="1992">Courtecuisse 1992</bibRefCitation>
, http://www.pharmanatur.com/Mycologie/Hygrocybe%20cinereifolia.htm).
<taxonomicName authorityName="Singer" authorityYear="1958" baseAuthorityName="A.H. Sm. &amp; Hesler" class="Agaricomycetes" family="Hygrophoraceae" genus="Hygrocybe" higherTaxonomySource="CoL" kingdom="Fungi" lsidName="Hygrocybe singeri" order="Agaricales" pageId="0" pageNumber="145" phylum="Basidiomycota" rank="species" species="singeri">
<emphasis italics="true" pageId="0" pageNumber="145">Hygrocybe singeri</emphasis>
</taxonomicName>
, originally described from northwestern USA, is also morphologically similar to
<taxonomicName class="Agaricomycetes" family="Hygrophoraceae" higherTaxonomySource="GBIF,CoL" kingdom="Fungi" lsidName="H. debilipes" order="Agaricales" pageId="0" pageNumber="145" phylum="Basidiomycota" rank="species" species="debilipes">
<emphasis italics="true" pageId="0" pageNumber="145">H. debilipes</emphasis>
</taxonomicName>
. However,
<taxonomicName class="Agaricomycetes" family="Hygrophoraceae" higherTaxonomySource="GBIF,CoL" kingdom="Fungi" lsidName="H. singeri" order="Agaricales" pageId="0" pageNumber="145" phylum="Basidiomycota" rank="species" species="singeri">
<emphasis italics="true" pageId="0" pageNumber="145">H. singeri</emphasis>
</taxonomicName>
is larger (10-50 mm diam.), and possesses a yellow to orange pileus and greenish yellow lamellae (
<bibRefCitation DOI="https://doi.org/10.5962/bhl.title.61976" author="Hesler, LR" journalOrPublisher="University of Tennessee Press, Knoxville" pageId="0" pageNumber="145" refId="B13" refString="Hesler, LR, Smith, AH, 1963. North American Species of Hygrophorus. University of Tennessee Press, Knoxville, DOI: https://doi.org/10.5962/bhl.title.61976" title="North American Species of Hygrophorus." url="https://doi.org/10.5962/bhl.title.61976" year="1963">Hesler and Smith 1963</bibRefCitation>
).
</paragraph>
</subSubSection>
</treatment>
</document>
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