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<document ID-DOI="http://dx.doi.org/10.3897/mycokeys.61.46446" ID-GBIF-Dataset="a9ff7769-113b-4412-8a59-4209f767c14e" ID-PMC="PMC6908510" ID-Pensoft-Pub="1314-4049-61-1" ID-Pensoft-UUID="80CB21905B515A1A92C99AD1CB72BE1D" ID-PubMed="31844415" ModsDocID="1314-4049-61-1" checkinTime="1575564990314" checkinUser="pensoft" docAuthor="He, Xiao-Lan, Horak, Egon, Wang, Di, Li, Tai-Hui, Peng, Wei-Hong &amp; Gan, Bing-Cheng" docDate="2019" docId="2538DA482E2255888DCBCF6374E03CC6" docLanguage="en" docName="MycoKeys 61: 1-26" docOrigin="MycoKeys 61" docSource="http://dx.doi.org/10.3897/mycokeys.61.46446" docTitle="Entoloma reductum Xiao L. He &amp; E. Horak, sp. nov." docType="treatment" docVersion="4" id="80CB21905B515A1A92C99AD1CB72BE1D" lastPageNumber="1" masterDocId="80CB21905B515A1A92C99AD1CB72BE1D" masterDocTitle="Descriptions of five new species in Entoloma subgenus Claudopus from China, with molecular phylogeny of Entoloma s. l." masterLastPageNumber="26" masterPageNumber="1" pageNumber="1" updateTime="1668136358809" updateUser="ExternalLinkService">
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo>
<mods:title>Descriptions of five new species in Entoloma subgenus Claudopus from China, with molecular phylogeny of Entoloma s. l.</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>He, Xiao-Lan</mods:namePart>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Horak, Egon</mods:namePart>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Wang, Di</mods:namePart>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Li, Tai-Hui</mods:namePart>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Peng, Wei-Hong</mods:namePart>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Gan, Bing-Cheng</mods:namePart>
</mods:name>
<mods:typeOfResource>text</mods:typeOfResource>
<mods:relatedItem type="host">
<mods:titleInfo>
<mods:title>MycoKeys</mods:title>
</mods:titleInfo>
<mods:part>
<mods:date>2019</mods:date>
<mods:detail type="volume">
<mods:number>61</mods:number>
</mods:detail>
<mods:extent unit="page">
<mods:start>1</mods:start>
<mods:end>26</mods:end>
</mods:extent>
</mods:part>
</mods:relatedItem>
<mods:location>
<mods:url>http://dx.doi.org/10.3897/mycokeys.61.46446</mods:url>
</mods:location>
<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">http://dx.doi.org/10.3897/mycokeys.61.46446</mods:identifier>
<mods:identifier type="Pensoft-Pub">1314-4049-61-1</mods:identifier>
<mods:identifier type="Pensoft-UUID">80CB21905B515A1A92C99AD1CB72BE1D</mods:identifier>
</mods:mods>
<treatment ID-GBIF-Taxon="160631058" LSID="urn:lsid:plazi:treatment:2538DA482E2255888DCBCF6374E03CC6" httpUri="http://treatment.plazi.org/id/2538DA482E2255888DCBCF6374E03CC6" lastPageNumber="1" pageId="0" pageNumber="1">
<subSubSection pageId="0" pageNumber="1" type="nomenclature">
<paragraph pageId="0" pageNumber="1">
5.
<taxonomicName LSID="2538DA48-2E22-5588-8DCB-CF6374E03CC6" authority="Xiao L. He &amp; E. Horak" class="Agaricomycetes" family="Entolomataceae" genus="Entoloma" higherTaxonomySource="CoL" kingdom="Fungi" lsidName="Entoloma reductum" order="Agaricales" pageId="0" pageNumber="1" phylum="Basidiomycota" rank="species" species="reductum">Entoloma reductum Xiao L. He &amp; E. Horak</taxonomicName>
<taxonomicNameLabel pageId="0" pageNumber="1">sp. nov.</taxonomicNameLabel>
<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Basidiomes of Claudopus species a Basidiomes of E. conchatum on soil (SAAS 1712) b Basidiomes of E. conchatum on stem of live Pinus (SAAS 1014) c Pileus of E. flabellatum (SAAS 1501) d Lamellae of E. flabellatum (SAAS 1080) e Basidiomes of C. gregarious on bark-wood of live Castanopsis (SAAS 1220) f Red droplets on the lamellar edges of E. gregarium (SAAS 1493) g Basidiomes of E. pleurotoides on decaying bark-wood of Castanopsis (SAAS 1215) h Basidiomes of E. pleurotoides on bark-wood of live Castanopsis (SAAS 1252) i Basidiomes of E. reductum on decaying stump of Castanopsis (holotype, SAAS 1091) j Mature basidiomes of E. reductum on rock (SAAS 2068) k Young basidiomes of E. reductum on soil (SAAS 1016) l Lamellae of E. byssisedum var. microsporum (SAAS 1828) m Basidiomes of E. byssisedum var. microsporum on decaying stump of Betula (SAAS 1160)." figureDoi="10.3897/mycokeys.61.46446.figure1" httpUri="https://binary.pensoft.net/fig/362620" pageId="0" pageNumber="1" tableDoi="10.3897/mycokeys.61.46446.figure1">Figures 1i, j, k</figureCitation>
,
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Microscopic structures of Entoloma reductum (holotype) a Basidiospores b Pileipellis." figureDoi="10.3897/mycokeys.61.46446.figure6" httpUri="https://binary.pensoft.net/fig/362625" pageId="0" pageNumber="1" tableDoi="10.3897/mycokeys.61.46446.figure6">6</figureCitation>
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="1" type="materials_examined">
<paragraph pageId="0" pageNumber="1">Type.</paragraph>
<paragraph pageId="0" pageNumber="1">
China. Yunnan Prov.: Binchuan County, Jizu Mountain, ca. 2600 m elev.,
<geoCoordinate degrees="25" direction="north" minutes="58" orientation="latitude" precision="925" value="25.966667">25°58'N</geoCoordinate>
,
<geoCoordinate degrees="100" direction="east" minutes="21" orientation="longitude" precision="925" value="100.35">100°21'E</geoCoordinate>
, on rotten stump of
<taxonomicName class="Magnoliopsida" family="Fagaceae" genus="Castanopsis" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Castanopsis" order="Fagales" pageId="0" pageNumber="1" phylum="Tracheophyta" rank="genus">
<emphasis italics="true" pageId="0" pageNumber="1">Castanopsis</emphasis>
</taxonomicName>
sp., 8 September 2015,
<emphasis italics="true" pageId="0" pageNumber="1">X.L. He</emphasis>
(
<emphasis italics="true" pageId="0" pageNumber="1">SAAS 1091</emphasis>
, holotype;
<emphasis italics="true" pageId="0" pageNumber="1">ZT 13607</emphasis>
, isotype).
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="1" type="sequences ex holotype">
<paragraph pageId="0" pageNumber="1">Sequences ex holotype.</paragraph>
<paragraph pageId="0" pageNumber="1">KU312123 (ITS), KU534232 (nLSU), KU534480 (RPB2), KU534419 (mtSSU).</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="1" type="etymology">
<paragraph pageId="0" pageNumber="1">Etymology.</paragraph>
<paragraph pageId="0" pageNumber="1">
<taxonomicName genus="Undatum" lsidName="Undatum reductum" pageId="0" pageNumber="1" rank="species" species="reductum">
<emphasis italics="true" pageId="0" pageNumber="1">reductum</emphasis>
</taxonomicName>
(Lat.), referring to the reduced stipe.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="1" type="diagnosis">
<paragraph pageId="0" pageNumber="1">Diagnosis.</paragraph>
<paragraph pageId="0" pageNumber="1">
<taxonomicName class="Agaricomycetes" family="Entolomataceae" genus="Entoloma" higherTaxonomySource="CoL" kingdom="Fungi" lsidName="Entoloma reductum" order="Agaricales" pageId="0" pageNumber="1" phylum="Basidiomycota" rank="species" species="reductum">
<emphasis italics="true" pageId="0" pageNumber="1">Entoloma reductum</emphasis>
</taxonomicName>
is similar to
<taxonomicName lsidName="E. byssisedum" pageId="0" pageNumber="1" rank="species" species="byssisedum">
<emphasis italics="true" pageId="0" pageNumber="1">E. byssisedum</emphasis>
</taxonomicName>
but differs by the size of the basidiospores.
</paragraph>
<paragraph pageId="0" pageNumber="1">
Pileus 8-25 mm broad, conchate, broadly convex to applanate, greyish at first, becoming greyish-brown with age, entirely matted-tomentose or matted-fibrillose, fibrils greyish-white, slightly hygrophanous, margin weakly transparent-striate. Lamellae moderately close, with two tiers of lamellulae, adnate, ventricose, up to 4 mm wide, whitish or pale greyish at first, becoming pink or rust pinkish with age, entire edges concolorous. Stipe 1-2.5
<normalizedToken originalValue="×">x</normalizedToken>
0.5-1 mm, lateral, strongly reduced, pale grey brownish, covered with minute pale greyish fibrils, base with white mycelium. Rhizoids absent. Context thin, greyish, unchanging on exposure. Odour absent. Taste not distinctive.
</paragraph>
<paragraph pageId="0" pageNumber="1">
Basidiospores 8-10.5 (12)
<normalizedToken originalValue="×">x</normalizedToken>
6-7.5
<normalizedToken originalValue="µm">µm</normalizedToken>
(
<emphasis italics="true" pageId="0" pageNumber="1">x</emphasis>
= 8.8
<normalizedToken originalValue="±">+/-</normalizedToken>
0.2
<normalizedToken originalValue="×">x</normalizedToken>
6.6
<normalizedToken originalValue="±">+/-</normalizedToken>
0.3
<normalizedToken originalValue="µm">µm</normalizedToken>
), Q = 1.25-1.61,
<emphasis bold="true" italics="true" pageId="0" pageNumber="1">Q</emphasis>
= 1.35
<normalizedToken originalValue="±">+/-</normalizedToken>
0.05, 5-6-angled, heterodiametric in profile view. Basidia 20-34
<normalizedToken originalValue="×">x</normalizedToken>
8-11
<normalizedToken originalValue="µm">µm</normalizedToken>
, clavate, 4-spored, clampless. Lamellar edge fertile. Cheilocystidia, pleurocystidia and caulocystidia absent. Pileipellis a cutis composed of cylindric hyphae, terminal cells (25-) 40-65
<normalizedToken originalValue="×">x</normalizedToken>
5-7
<normalizedToken originalValue="µm">µm</normalizedToken>
, repent or slightly uplifted, cylindrical or slender clavate, non-gelatinised wall thin, smooth or minutely encrusted with slightly pale brown pigment. Oleiferous hyphae present in pileipellis. Clamp connections present in the pileipellis.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="1" type="habitat">
<paragraph pageId="0" pageNumber="1">Habitat.</paragraph>
<paragraph pageId="0" pageNumber="1">
On decayed stump of
<taxonomicName class="Magnoliopsida" family="Fagaceae" genus="Castanopsis" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Castanopsis" order="Fagales" pageId="0" pageNumber="1" phylum="Tracheophyta" rank="genus">
<emphasis italics="true" pageId="0" pageNumber="1">Castanopsis</emphasis>
</taxonomicName>
sp.; on soil or rock amongst moss in forest dominated by
<taxonomicName class="Magnoliopsida" family="Fagaceae" genus="Quercus" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Quercus" order="Fagales" pageId="0" pageNumber="1" phylum="Tracheophyta" rank="genus">
<emphasis italics="true" pageId="0" pageNumber="1">Quercus</emphasis>
</taxonomicName>
sp.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="1" type="materials_examined">
<paragraph pageId="0" pageNumber="1">Additional materials examined.</paragraph>
<paragraph pageId="0" pageNumber="1">
China. Sichuan Prov.: Yajiang County, Gexigou National Nature Reserve, ca. 2800 m elev.,
<geoCoordinate degrees="30" direction="north" minutes="03" orientation="latitude" precision="925" value="30.05">30°03'N</geoCoordinate>
,
<geoCoordinate degrees="101" direction="east" orientation="longitude" precision="55555" value="101.0">101°E</geoCoordinate>
, on rock amongst moss, 6 August 2015,
<emphasis italics="true" pageId="0" pageNumber="1">X.L. He</emphasis>
(
<emphasis italics="true" pageId="0" pageNumber="1">SAAS 1016</emphasis>
); on soil amongst moss, 3 August 2014,
<emphasis italics="true" pageId="0" pageNumber="1">X.L. He</emphasis>
(
<emphasis italics="true" pageId="0" pageNumber="1">SAAS 1897</emphasis>
); on rock amongst moss, 3 August 2014,
<emphasis italics="true" pageId="0" pageNumber="1">X.L. He</emphasis>
(
<emphasis italics="true" pageId="0" pageNumber="1">SAAS 2068</emphasis>
). Yunnan Prov.: Binchuan County, Jizu Mountain, ca. 2600 m elev.,
<geoCoordinate degrees="25" direction="north" minutes="58" orientation="latitude" precision="925" value="25.966667">25°58'N</geoCoordinate>
,
<geoCoordinate degrees="100" direction="east" minutes="21" orientation="longitude" precision="925" value="100.35">100°21'E</geoCoordinate>
, on decayed stump of
<taxonomicName class="Magnoliopsida" family="Fagaceae" genus="Castanopsis" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Castanopsis" order="Fagales" pageId="0" pageNumber="1" phylum="Tracheophyta" rank="genus">
<emphasis italics="true" pageId="0" pageNumber="1">Castanopsis</emphasis>
</taxonomicName>
sp., 8 September 2015,
<emphasis italics="true" pageId="0" pageNumber="1">X.L. He</emphasis>
(
<emphasis italics="true" pageId="0" pageNumber="1">SAAS 1608</emphasis>
;
<emphasis italics="true" pageId="0" pageNumber="1">ZT 13606</emphasis>
).
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="1" type="remarks">
<paragraph pageId="0" pageNumber="1">Remarks.</paragraph>
<paragraph pageId="0" pageNumber="1">
<taxonomicName class="Agaricomycetes" family="Entolomataceae" genus="Entoloma" higherTaxonomySource="CoL" kingdom="Fungi" lsidName="Entoloma reductum" order="Agaricales" pageId="0" pageNumber="1" phylum="Basidiomycota" rank="species" species="reductum">
<emphasis italics="true" pageId="0" pageNumber="1">Entoloma reductum</emphasis>
</taxonomicName>
is unique by the combined features of pleurotoid, greyish-brown basidiomes, presence of brownish encrusting and intracellular pigment and presence of scattered clamp connections.
</paragraph>
<paragraph pageId="0" pageNumber="1">
<taxonomicName class="Agaricomycetes" family="Entolomataceae" genus="Entoloma" higherTaxonomySource="CoL" kingdom="Fungi" lsidName="Entoloma reductum" order="Agaricales" pageId="0" pageNumber="1" phylum="Basidiomycota" rank="species" species="reductum">
<emphasis italics="true" pageId="0" pageNumber="1">Entoloma reductum</emphasis>
</taxonomicName>
can be confused with
<taxonomicName lsidName="E. byssisedum" pageId="0" pageNumber="1" rank="species" species="byssisedum">
<emphasis italics="true" pageId="0" pageNumber="1">E. byssisedum</emphasis>
</taxonomicName>
(Pers.) Donk; however, the latter species is separated by the larger basidiospores (9.5-12
<normalizedToken originalValue="×">x</normalizedToken>
6.5-8.0
<normalizedToken originalValue="µm">µm</normalizedToken>
,
<bibRefCitation author="Noordeloos, ME" journalOrPublisher="Persoonia" pageId="0" pageNumber="1" refId="B31" refString="Noordeloos, ME, 2004. Entoloma s.l. Fungi Europaei, vol. 5a. Edizione Candusso, Italy." title="Entoloma s. l. Fungi Europaei, vol. 5 a. Edizione Candusso, Italy." year="2004">Noordeloos 2004</bibRefCitation>
).
<taxonomicName infraspecific-rank="var." lsidName="E. byssisedum var. microsporum" pageId="0" pageNumber="1" rank="variety" species="byssisedum" variety="microsporum">E. byssisedum var. microsporum</taxonomicName>
is separated by the more reniform and paler coloured pileus and, in addition, the two species are well distinguished by their ITS and RPB2 sequences.
<taxonomicName class="Agaricomycetes" family="Entolomataceae" genus="Claudopus" higherTaxonomySource="CoL" kingdom="Fungi" lsidName="Claudopus dulcisaporus" order="Agaricales" pageId="0" pageNumber="1" phylum="Basidiomycota" rank="species" species="dulcisaporus">
<emphasis italics="true" pageId="0" pageNumber="1">Claudopus dulcisaporus</emphasis>
</taxonomicName>
Largent, described from North America, shares with
<taxonomicName lsidName="E. reductum" pageId="0" pageNumber="1" rank="species" species="reductum">
<emphasis italics="true" pageId="0" pageNumber="1">E. reductum</emphasis>
</taxonomicName>
the brown basidiomes and the size of the basidiospores, but it can be distinguished not only by the presence of abundant cheilocystidia, but also the habitat (
<bibRefCitation author="Largent, DL" journalOrPublisher="Madrono" pageId="0" pageNumber="1" refId="B20" refString="Largent, DL, 1994. Entolomatoid fungi of the western United States and Alaska. Mad River Press Inc, Eureka, CA." title="Entolomatoid fungi of the western United States and Alaska. Mad River Press Inc, Eureka, CA." year="1994">Largent 1994</bibRefCitation>
).
<taxonomicName class="Agaricomycetes" family="Entolomataceae" genus="Claudopus" higherTaxonomySource="CoL" kingdom="Fungi" lsidName="Claudopus graveolens" order="Agaricales" pageId="0" pageNumber="1" phylum="Basidiomycota" rank="species" species="graveolens">
<emphasis italics="true" pageId="0" pageNumber="1">Claudopus graveolens</emphasis>
</taxonomicName>
Largent is distinguished by smooth and bicolorous pileus, presence of cheilocystidia (
<bibRefCitation author="Largent, DL" journalOrPublisher="Madrono" pageId="0" pageNumber="1" pagination="376 - 378" refId="B19" refString="Largent, DL, 1976. A new species of Claudopus from Northern California. Madrono 23: 376 - 378" title="A new species of Claudopus from Northern California." volume="23" year="1976">Largent 1976</bibRefCitation>
); finally,
<taxonomicName lsidName="C. avellaneus" pageId="0" pageNumber="1" rank="species" species="avellaneus">
<emphasis italics="true" pageId="0" pageNumber="1">C. avellaneus</emphasis>
</taxonomicName>
differs by the narrower basidiospores (8-10
<normalizedToken originalValue="×">x</normalizedToken>
5-6
<normalizedToken originalValue="µm">µm</normalizedToken>
,
<bibRefCitation DOI="https://doi.org/10.2307/3753039" author="Murrill, WA" journalOrPublisher="Mikologiya Fitopatologiya" pageId="0" pageNumber="1" refId="B28" refString="Murrill, WA, 1917. .https://doi.org/10.2307/3753039" url="https://doi.org/10.2307/3753039" year="1917">Murrill 1917</bibRefCitation>
).
</paragraph>
<caption doi="10.3897/mycokeys.61.46446.figure6" httpUri="https://binary.pensoft.net/fig/362625" pageId="0" pageNumber="1" start="Figure 6" startId="F6">
<paragraph pageId="0" pageNumber="1">
<emphasis bold="true" pageId="0" pageNumber="1">Figure 6.</emphasis>
Microscopic structures of
<taxonomicName class="Agaricomycetes" family="Entolomataceae" genus="Entoloma" higherTaxonomySource="CoL" kingdom="Fungi" lsidName="Entoloma reductum" order="Agaricales" pageId="0" pageNumber="1" phylum="Basidiomycota" rank="species" species="reductum">
<emphasis italics="true" pageId="0" pageNumber="1">Entoloma reductum</emphasis>
</taxonomicName>
(holotype)
<emphasis bold="true" pageId="0" pageNumber="1">a</emphasis>
Basidiospores
<emphasis bold="true" pageId="0" pageNumber="1">b</emphasis>
Pileipellis.
</paragraph>
</caption>
</subSubSection>
</treatment>
</document>