196 lines
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196 lines
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<document ID-DOI="http://dx.doi.org/10.3897/mycokeys.47.31130" ID-GBIF-Dataset="c1116709-9015-44c4-b306-4149c3f511ff" ID-PMC="PMC6405736" ID-Pensoft-Pub="1314-4049-47-97" ID-PubMed="30858753" ModsDocAuthor="" ModsDocDate="2019" ModsDocID="1314-4049-47-97" ModsDocOrigin="MycoKeys 47" ModsDocTitle="Phylogenetic and morphological studies in Xylodon (Hymenochaetales, Basidiomycota) with the addition of four new species" checkinTime="1555333420989" checkinUser="pensoft" docAuthor="Riebesehl, Janett, Yurchenko, Eugene, Nakasone, Karen K. & Langer, Ewald" docDate="2019" docId="67CF7F538EEDAB1CBB61CE9A0B07F509" docLanguage="en" docName="MycoKeys 47: 97-137" docOrigin="MycoKeys 47" docSource="http://dx.doi.org/10.3897/mycokeys.47.31130" docTitle="Xylodon exilis Yurchenko, Riebesehl & Langer, sp. nov." docType="treatment" docVersion="4" lastPageNumber="97" masterDocId="FFC93C6FD904FFF0FFD5FFDDFFC45F71" masterDocTitle="Phylogenetic and morphological studies in Xylodon (Hymenochaetales, Basidiomycota) with the addition of four new species" masterLastPageNumber="137" masterPageNumber="97" pageNumber="97" updateTime="1668136171551" updateUser="ExternalLinkService">
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<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:titleInfo>
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<mods:title>Phylogenetic and morphological studies in Xylodon (Hymenochaetales, Basidiomycota) with the addition of four new species</mods:title>
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</mods:titleInfo>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Riebesehl, Janett</mods:namePart>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Yurchenko, Eugene</mods:namePart>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Nakasone, Karen K.</mods:namePart>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Langer, Ewald</mods:namePart>
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</mods:name>
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<mods:typeOfResource>text</mods:typeOfResource>
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<mods:relatedItem type="host">
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<mods:titleInfo>
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<mods:title>MycoKeys</mods:title>
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</mods:titleInfo>
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<mods:part>
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<mods:date>2019</mods:date>
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<mods:detail type="volume">
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<mods:number>47</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>97</mods:start>
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<mods:end>137</mods:end>
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</mods:extent>
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</mods:part>
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</mods:relatedItem>
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<mods:location>
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<mods:url>http://dx.doi.org/10.3897/mycokeys.47.31130</mods:url>
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</mods:location>
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<mods:classification>journal article</mods:classification>
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<mods:identifier type="DOI">http://dx.doi.org/10.3897/mycokeys.47.31130</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1314-4049-47-97</mods:identifier>
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</mods:mods>
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<treatment ID-GBIF-Taxon="156202046" LSID="urn:lsid:plazi:treatment:67CF7F538EEDAB1CBB61CE9A0B07F509" httpUri="http://treatment.plazi.org/id/67CF7F538EEDAB1CBB61CE9A0B07F509" lastPageNumber="97" pageId="0" pageNumber="97">
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<subSubSection pageId="0" pageNumber="97" type="nomenclature">
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<paragraph pageId="0" pageNumber="97">
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<taxonomicName LSID="MB827462" authority="Yurchenko, Riebesehl & Langer" class="Agaricomycetes" family="Schizoporaceae" genus="Xylodon" higherTaxonomySource="CoL" kingdom="Fungi" lsidName="Xylodon exilis" order="Hymenochaetales" pageId="0" pageNumber="97" phylum="Basidiomycota" rank="species" species="exilis">Xylodon exilis Yurchenko, Riebesehl & Langer</taxonomicName>
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<taxonomicNameLabel pageId="0" pageNumber="97">sp. nov.</taxonomicNameLabel>
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Figs 3a, 4
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="97" type="holotype">
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<paragraph pageId="0" pageNumber="97">Holotype.</paragraph>
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<paragraph pageId="0" pageNumber="97">TAIWAN, Nantou county, south from Sun-Moon Lake, near Hua Lien, Lien-Hwa-Chi, 700 m a.s.l., on fallen angiosperm twig, leg. E. Langer, G. Langer, F. Oberwinkler, 10 Jul 1990 (TUB-FO 42565; isotypes in KAS and MSK).</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="97" type="description">
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<paragraph pageId="0" pageNumber="97">Description.</paragraph>
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<paragraph pageId="0" pageNumber="97">
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Basidiomata effused, 1-5 cm in extent, membranaceous, discontinuous at the periphery. Hymenial surface minutely odontioid, cream-coloured, between aculei 50-130
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<normalizedToken originalValue="μm">μm</normalizedToken>
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thick. Aculei peg-like, conical or subcylindrical, entire or slightly penicillate apically, 35-70
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<normalizedToken originalValue="μm">μm</normalizedToken>
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long, 15
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<normalizedToken originalValue="–50(–">-50(-</normalizedToken>
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70)
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<normalizedToken originalValue="μm">μm</normalizedToken>
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diam., 8-14/mm. Margin abrupt or somewhat thinning out. Hyphal system monomitic, hyphae colourless, with clamps at all primary septa. Subicular hyphae forming a loose tissue, rarely branched, 3
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<normalizedToken originalValue="–4(–">-4(-</normalizedToken>
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4.5)
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<normalizedToken originalValue="μm">μm</normalizedToken>
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wide, with slightly thick to thick walls (0.5-1.2
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<normalizedToken originalValue="μm">μm</normalizedToken>
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thick), with scattered adventitious septa, smooth. Subhymenial hyphae in a dense tissue, richly branched, 2-3
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<normalizedToken originalValue="μm">μm</normalizedToken>
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wide, thin-walled, smooth or slightly encrusted. Capitate cystidia enclosed, 18-22
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<normalizedToken originalValue="×">x</normalizedToken>
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5.5-8
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<normalizedToken originalValue="μm">μm</normalizedToken>
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, sometimes with an adventitious septum in stem, thin- to slightly thick-walled. Projecting hyphae in aculei flexuous, apically obtuse, 90-130
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<normalizedToken originalValue="μm">μm</normalizedToken>
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long, 3-4
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<normalizedToken originalValue="μm">μm</normalizedToken>
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wide, originating from thick-walled subicular hyphae, with simple and clamped septa, often constricted at septa, walls thickened at base then gradually thinning toward apex, moderately encrusted. Basidioles clavate or bowling pin-shaped, 10-20
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<normalizedToken originalValue="×">x</normalizedToken>
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4.5-5.5
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<normalizedToken originalValue="μm">μm</normalizedToken>
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. Basidia narrowly utriform, 20-25
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<normalizedToken originalValue="×">x</normalizedToken>
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4
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<normalizedToken originalValue="–5(–">-5(-</normalizedToken>
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5.5)
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<normalizedToken originalValue="μm">μm</normalizedToken>
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, thin-walled, smooth, with four sterigmata 2-4
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<normalizedToken originalValue="×">x</normalizedToken>
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0.3
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<normalizedToken originalValue="μm">μm</normalizedToken>
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. Spores narrowly ellipsoid, 5.5-6
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<normalizedToken originalValue="×">x</normalizedToken>
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2.5-3
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<normalizedToken originalValue="μm">μm</normalizedToken>
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, holotype L = 5.8
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<normalizedToken originalValue="µm">µm</normalizedToken>
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, W = 2.8
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<normalizedToken originalValue="µm">µm</normalizedToken>
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, Q = (1.6
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<normalizedToken originalValue="–)1.8–">-)1.8-</normalizedToken>
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2.2, colourless, smooth, slightly thick-walled, negative in Mz, acyanophilous, with minute apiculus.
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</paragraph>
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<caption pageId="0" pageNumber="97">
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<paragraph pageId="0" pageNumber="97">
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Figure 3. Basidiomata of
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<taxonomicName class="Agaricomycetes" family="Schizoporaceae" genus="Xylodon" higherTaxonomySource="CoL" kingdom="Fungi" lsidName="Xylodon" order="Hymenochaetales" pageId="0" pageNumber="97" phylum="Basidiomycota" rank="genus">Xylodon</taxonomicName>
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spp. A
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<taxonomicName lsidName="X. exilis" pageId="0" pageNumber="97" rank="species" species="exilis">X. exilis</taxonomicName>
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(TUB-FO 42565, holotype) B
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<taxonomicName lsidName="X. filicinus" pageId="0" pageNumber="97" rank="species" species="filicinus">X. filicinus</taxonomicName>
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(MSK-F 12369, holotype) C
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<taxonomicName lsidName="X. follis" pageId="0" pageNumber="97" rank="species" species="follis">X. follis</taxonomicName>
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(FR-0249814, holotype) D
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<taxonomicName lsidName="X. pseudolanatus" pageId="0" pageNumber="97" rank="species" species="pseudolanatus">X. pseudolanatus</taxonomicName>
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(FP-150922, holotype) E
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<taxonomicName lsidName="X. pseudolanatus" pageId="0" pageNumber="97" rank="species" species="pseudolanatus">X. pseudolanatus</taxonomicName>
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(HHB-6925, paratype) F
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<taxonomicName lsidName="X. vesiculosus" pageId="0" pageNumber="97" rank="species" species="vesiculosus">X. vesiculosus</taxonomicName>
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(PDD-18112, isotype) G
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<taxonomicName lsidName="X. lanatus" pageId="0" pageNumber="97" rank="species" species="lanatus">X. lanatus</taxonomicName>
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(CFMR HHB-8925, holotype). Scale bars: 1 mm.
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</paragraph>
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</caption>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="97" type="distribution">
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<paragraph pageId="0" pageNumber="97">Distribution and ecology.</paragraph>
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<paragraph pageId="0" pageNumber="97">The species is known from Taiwan and Nepal. It grows on dead wood of angiosperms, with a preference for small branches and twigs.</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="97" type="etymology">
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<paragraph pageId="0" pageNumber="97">Etymology.</paragraph>
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<paragraph pageId="0" pageNumber="97">
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from Latin
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<taxonomicName lsidName="exilis" pageId="0" pageNumber="97" rank="species" species="exilis">exilis</taxonomicName>
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- thin, fine, refers to the small and narrow aculei.
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</paragraph>
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<caption pageId="0" pageNumber="97">
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<paragraph pageId="0" pageNumber="97">
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Figure 4. Micromorphology of
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<taxonomicName class="Agaricomycetes" family="Schizoporaceae" genus="Xylodon" higherTaxonomySource="CoL" kingdom="Fungi" lsidName="Xylodon exilis" order="Hymenochaetales" pageId="0" pageNumber="97" phylum="Basidiomycota" rank="species" species="exilis">Xylodon exilis</taxonomicName>
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(TUB-FO 42565, holotype): A, B vertical sections through basidioma C subicular hyphae D portion of hymenium and subhymenium E projecting aculeal hyphae in MzF projecting aculeal hyphae in 3% KOHG capitate cystidia H basidioles J basidia K basidiospores. Scale bars: 100
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<normalizedToken originalValue="μm">μm</normalizedToken>
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(A); 20
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<normalizedToken originalValue="μm">μm</normalizedToken>
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(B); 10
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<normalizedToken originalValue="μm">μm</normalizedToken>
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(
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<normalizedToken originalValue="C–J">C-J</normalizedToken>
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); 5
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<normalizedToken originalValue="μm">μm</normalizedToken>
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(K).
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</paragraph>
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</caption>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="97" type="materials_examined">
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<paragraph pageId="0" pageNumber="97">Additional specimens examined.</paragraph>
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<paragraph pageId="0" pageNumber="97">TAIWAN, Nantou Co., west from Sun-Moon Lake, near Hua Lien, on dead wood, leg. E. Langer, G. Langer, F. Oberwinkler, 26 Mar 1989 (TUB-FO 40734; dupl. in KAS); south from Sun-Moon Lake, near Hua Lien, on fallen angiosperm twig, leg. E. Langer, G. Langer, F. Oberwinkler, 9 Jul 1990 (TUB-FO 42450; dupl. in KAS and MSK); Taichung Co., Shinshe, on fallen angiosperm twig, leg. E. Yurchenko, 2 Apr 2011 (MSK-F 12912); ibid., on fallen liana stem, leg. E. Yurchenko, 2 Apr 2011 (MSK-F 12913); ibid., on fallen angiosperm twig, leg. E. Yurchenko, 5 Jun 2011 (MSK-F 12914); Taipei Co., Wulai, Neidong Recreation Area, on fallen angiosperm twig, leg. E. Yurchenko, 23 Jun 2011 (MSK-F 7381; dupl. in KAS and LE); Miaoli Co., Sanyi, on fallen angiosperm branch, leg. E. Yurchenko, 3 Jul 2011 (MSK-F 7431); ibid., on fallen angiosperm branch, leg. E. Yurchenko, 19 Jul 2011 (MSK-F 7430). NEPAL: Gandaki Prov., Kuldi, Anapurna Trek, leg. L. Ryvarden, 7 Nov 1979 (O-LR 18918/B, dupl. in KAS).</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="97" type="remarks">
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<paragraph pageId="0" pageNumber="97">Remarks.</paragraph>
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<paragraph pageId="0" pageNumber="97">
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The species concept of
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<taxonomicName lsidName="X. lanatus" pageId="0" pageNumber="97" rank="species" species="lanatus">X. lanatus</taxonomicName>
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is revised and restricted to specimens with a well-developed woolly subiculum. The distinctive characters of
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<taxonomicName lsidName="X. exilis" pageId="0" pageNumber="97" rank="species" species="exilis">X. exilis</taxonomicName>
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are the minutely odontioid basidiomata with peg-like aculei composed of flexuous, encrusted, septate projecting hyphae that are constricted at the septa, embedded capitate cystidia and narrowly ellipsoid spores with slightly thickened walls. Earlier specimens of
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<taxonomicName lsidName="X. exilis" pageId="0" pageNumber="97" rank="species" species="exilis">X. exilis</taxonomicName>
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from Taiwan (e.g.
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<bibRefCitation pageId="0" pageNumber="97">Langer 1994</bibRefCitation>
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, p. 143 for illustration) and Nepal (
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<bibRefCitation author="Hjortstam, K" journalOrPublisher="Mycotaxon" pageId="0" pageNumber="97" pagination="133 - 151" title="Some new and noteworthy Basidiomycetes (Aphyllophorales) from Nepal." volume="20" year="1984">Hjortstam and Ryvarden 1984</bibRefCitation>
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) were originally identified as
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<taxonomicName lsidName="X. lanatus" pageId="0" pageNumber="97" rank="species" species="lanatus">X. lanatus</taxonomicName>
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. Hyphae and spores of this species were also depicted by
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<bibRefCitation author="Yurchenko, E" journalOrPublisher="Nova Hedwigia" pageId="0" pageNumber="97" pagination="545 - 558" title="Four new species of Hyphodontia (Xylodon ss. Hjortstam & Ryvarden, Basidiomycota) from Taiwan." url="https://doi.org/10.1127/0029-5035/2013/0092" volume="96" year="2013">Yurchenko et al. (2013)</bibRefCitation>
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under the name
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<taxonomicName lsidName="X. lanatus" pageId="0" pageNumber="97" rank="species" species="lanatus">X. lanatus</taxonomicName>
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. These two species and other morphologically similar taxa are compared in the Discussion section below; a key is also presented.
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</paragraph>
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</subSubSection>
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</treatment>
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</document>
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