243 lines
17 KiB
XML
243 lines
17 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/mycokeys.63.49054" ID-GBIF-Dataset="2eec87e8-e8cc-4585-84bb-ac5af39810d1" ID-PMC="PMC7062851" ID-Pensoft-Pub="1314-4049-63-69" ID-Pensoft-UUID="BC2096E6D63D5F5DA23CDFDDD3D63FA9" ID-PubMed="32189978" ModsDocID="1314-4049-63-69" checkinTime="1583231436794" checkinUser="pensoft" docAuthor="Jaklitsch, Walter M. & Voglmayr, Hermann" docDate="2020" docId="F825EFBEAD445C5F8AD3BA5C8F3A027C" docLanguage="en" docName="MycoKeys 63: 69-117" docOrigin="MycoKeys 63" docSource="http://dx.doi.org/10.3897/mycokeys.63.49054" docTitle="Melanconis larissae Jaklitsch & Voglmayr 2020, sp. nov." docType="treatment" docVersion="4" id="BC2096E6D63D5F5DA23CDFDDD3D63FA9" lastPageNumber="69" masterDocId="BC2096E6D63D5F5DA23CDFDDD3D63FA9" masterDocTitle="The genus Melanconis (Diaporthales)" masterLastPageNumber="117" masterPageNumber="69" pageNumber="69" updateTime="1668136401704" 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>The genus Melanconis (Diaporthales)</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>Jaklitsch, Walter M.</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>Voglmayr, Hermann</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>2020</mods:date>
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<mods:detail type="volume">
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<mods:number>63</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>69</mods:start>
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<mods:end>117</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.63.49054</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.63.49054</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1314-4049-63-69</mods:identifier>
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<mods:identifier type="Pensoft-UUID">BC2096E6D63D5F5DA23CDFDDD3D63FA9</mods:identifier>
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</mods:mods>
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<treatment ID-GBIF-Taxon="162381281" LSID="urn:lsid:plazi:treatment:F825EFBEAD445C5F8AD3BA5C8F3A027C" httpUri="http://treatment.plazi.org/id/F825EFBEAD445C5F8AD3BA5C8F3A027C" lastPageNumber="69" pageId="0" pageNumber="69">
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<subSubSection pageId="0" pageNumber="69" type="nomenclature">
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<paragraph pageId="0" pageNumber="69">
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<taxonomicName LSID="F825EFBE-AD44-5C5F-8AD3-BA5C8F3A027C" authority="Jaklitsch & Voglmayr" authorityName="Jaklitsch & Voglmayr" authorityYear="2020" class="Sordariomycetes" family="Melanconidaceae" genus="Melanconis" higherTaxonomySource="CoL" kingdom="Fungi" lsidName="Melanconis larissae" order="Diaporthales" pageId="0" pageNumber="69" phylum="Ascomycota" rank="species" species="larissae" status="sp. nov.">Melanconis larissae Jaklitsch & Voglmayr</taxonomicName>
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<taxonomicNameLabel pageId="0" pageNumber="69">sp. nov.</taxonomicNameLabel>
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<figureCitation captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Melanconis larissae holotype (BPI 870998) a-o sexual morph a, b ectostromatic discs c, d cross sections showing white upper and yellow lower parts of central columns, ostiolar necks and perithecia e-g asci h-o ascospores f, g in aqueous Congo Red p-y asexual morph p conidial deposit q conidioma in cross section r, s conidiophores and conidiogenous cells (showing annellations in s) t-y α-conidia r-y in 3 % KOH. Scale bars: 500 µm (a-d, p, q), 15 µm (e-g), 7 µm (h-o, r), 5 µm (s-y)." figureDoi="10.3897/mycokeys.63.49054.figure5" httpUri="https://binary.pensoft.net/fig/384815" pageId="0" pageNumber="69">Figure 5</figureCitation>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="69" type="diagnosis">
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<paragraph pageId="0" pageNumber="69">Diagnosis.</paragraph>
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<paragraph pageId="0" pageNumber="69">
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<taxonomicName authorityName="Jaklitsch & Voglmayr" authorityYear="2020" class="Sordariomycetes" family="Melanconidaceae" genus="Melanconis" higherTaxonomySource="CoL" kingdom="Fungi" lsidName="Melanconis larissae" order="Diaporthales" pageId="0" pageNumber="69" phylum="Ascomycota" rank="species" species="larissae">
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<emphasis italics="true" pageId="0" pageNumber="69">Melanconis larissae</emphasis>
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</taxonomicName>
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differs from
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<taxonomicName lsidName="M. stilbostoma" pageId="0" pageNumber="69" rank="species" species="stilbostoma">
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<emphasis italics="true" pageId="0" pageNumber="69">M. stilbostoma</emphasis>
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</taxonomicName>
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by
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<normalizedToken originalValue="α-conidia">α-conidia</normalizedToken>
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having a broad diffuse light-coloured zone.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="69" type="type material">
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<paragraph pageId="0" pageNumber="69">Type material.</paragraph>
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<paragraph pageId="0" pageNumber="69">
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<emphasis bold="true" pageId="0" pageNumber="69">
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<emphasis italics="true" pageId="0" pageNumber="69">Holotype</emphasis>
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.
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</emphasis>
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USA, New York, Adirondack Mts., Cranberry Lake, on
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<taxonomicName class="Magnoliopsida" family="Betulaceae" genus="Betula" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Betula" order="Fagales" pageId="0" pageNumber="69" phylum="Tracheophyta" rank="genus">
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<emphasis italics="true" pageId="0" pageNumber="69">Betula</emphasis>
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</taxonomicName>
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sp., 13 Jun 2002, L. Vasilyeva (BPI 870998; ex-type culture CBS 123196 = A.R. 3886, ME7).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="69" type="etymology">
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<paragraph pageId="0" pageNumber="69">Etymology.</paragraph>
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<paragraph pageId="0" pageNumber="69">Named after the collector Larissa Vasilyeva.</paragraph>
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<caption doi="10.3897/mycokeys.63.49054.figure5" httpUri="https://binary.pensoft.net/fig/384815" pageId="0" pageNumber="69" start="Figure 5" startId="F5">
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<paragraph pageId="0" pageNumber="69">
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<emphasis bold="true" pageId="0" pageNumber="69">Figure 5.</emphasis>
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<taxonomicName authorityName="Jaklitsch & Voglmayr" authorityYear="2020" class="Sordariomycetes" family="Melanconidaceae" genus="Melanconis" higherTaxonomySource="CoL" kingdom="Fungi" lsidName="Melanconis larissae" order="Diaporthales" pageId="0" pageNumber="69" phylum="Ascomycota" rank="species" species="larissae">
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<emphasis italics="true" pageId="0" pageNumber="69">Melanconis larissae</emphasis>
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</taxonomicName>
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holotype (BPI 870998)
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<emphasis bold="true" pageId="0" pageNumber="69">a-o</emphasis>
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sexual morph
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<emphasis bold="true" pageId="0" pageNumber="69">a, b</emphasis>
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ectostromatic discs
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<emphasis bold="true" pageId="0" pageNumber="69">c, d</emphasis>
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cross sections showing white upper and yellow lower parts of central columns, ostiolar necks and perithecia
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<emphasis bold="true" pageId="0" pageNumber="69">e-g</emphasis>
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asci
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<emphasis bold="true" pageId="0" pageNumber="69">h-o</emphasis>
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ascospores
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<emphasis bold="true" pageId="0" pageNumber="69">f, g</emphasis>
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in aqueous Congo Red
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<emphasis bold="true" pageId="0" pageNumber="69">p-y</emphasis>
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asexual morph
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<emphasis bold="true" pageId="0" pageNumber="69">p</emphasis>
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conidial deposit
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<emphasis bold="true" pageId="0" pageNumber="69">q</emphasis>
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conidioma in cross section
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<emphasis bold="true" pageId="0" pageNumber="69">r, s</emphasis>
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conidiophores and conidiogenous cells (showing annellations in
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<emphasis bold="true" pageId="0" pageNumber="69">s</emphasis>
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)
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<emphasis bold="true" pageId="0" pageNumber="69">t-y</emphasis>
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<normalizedToken originalValue="α-conidia">α-conidia</normalizedToken>
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<emphasis bold="true" pageId="0" pageNumber="69">r-y</emphasis>
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in 3% KOH. Scale bars: 500
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<normalizedToken originalValue="µm">µm</normalizedToken>
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(
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<emphasis bold="true" pageId="0" pageNumber="69">a-d, p, q)</emphasis>
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, 15
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<normalizedToken originalValue="µm">µm</normalizedToken>
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(
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<emphasis bold="true" pageId="0" pageNumber="69">e-g</emphasis>
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), 7
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<normalizedToken originalValue="µm">µm</normalizedToken>
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(
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<emphasis bold="true" pageId="0" pageNumber="69">h-o, r</emphasis>
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), 5
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<normalizedToken originalValue="µm">µm</normalizedToken>
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(
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<emphasis bold="true" pageId="0" pageNumber="69">s-y</emphasis>
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).
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</paragraph>
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</caption>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="69" type="description">
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<paragraph pageId="0" pageNumber="69">Description.</paragraph>
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<paragraph pageId="0" pageNumber="69">
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<emphasis bold="true" italics="true" pageId="0" pageNumber="69">Sexual morph</emphasis>
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:
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<emphasis italics="true" pageId="0" pageNumber="69">Pseudostromata</emphasis>
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1.8-2.7 mm diam., scattered to aggregated, not or only scarcely projecting from the bark surface, pulvinate, circular to elliptical in outline; consisting of an ectostromatic disc and perithecia embedded in an entostroma around a central column and sometimes conidial locules present on the ostiolar level.
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<emphasis italics="true" pageId="0" pageNumber="69">Ectostromatic discs</emphasis>
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0.5-1.4 mm diam. or long, slightly projecting, fusoid to circular, flat or concave, white to yellow, often concealed by ostioles; central column beneath disc brightly white at upper levels, yellow amongst ostiolar necks at lower levels, consisting of hyaline hyphae and colourless crystals.
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<emphasis italics="true" pageId="0" pageNumber="69">Ostiolar necks</emphasis>
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cylindrical, laterally or centrally attached on perithecia, convergent and irregularly inserted in the disc; visible part (88-)130-204(-230)
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<normalizedToken originalValue="µm">µm</normalizedToken>
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(n = 32) diam., 1-12 per disc, black, subglobose to subconical with flat or pointed tips, projecting to 200
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<normalizedToken originalValue="µm">µm</normalizedToken>
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.
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<emphasis italics="true" pageId="0" pageNumber="69">Entostroma</emphasis>
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consisting of hyaline hyphae and bark cells.
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<emphasis italics="true" pageId="0" pageNumber="69">Perithecia</emphasis>
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(420-)490-650(-690)
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<normalizedToken originalValue="µm">µm</normalizedToken>
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(n = 14) diam., arranged in valsoid configuration around and below central column, globose to subglobose, collapsing up- or laterally inwards upon drying.
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<emphasis italics="true" pageId="0" pageNumber="69">Peridium</emphasis>
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pseudoparenchymatous, consisting of a dark brown small-celled outer and a hyaline to brownish, large-celled inner layer.
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<emphasis italics="true" pageId="0" pageNumber="69">Hamathecium</emphasis>
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absent at maturity.
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<emphasis italics="true" pageId="0" pageNumber="69">Asci</emphasis>
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floating free at maturity, (69-)84-106(-117)
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<normalizedToken originalValue="×">x</normalizedToken>
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(11-)13-17.5(-19.7)
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<normalizedToken originalValue="µm">µm</normalizedToken>
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(n = 22), fusoid to oblong, with an apical ring distinct in water and staining in Congo Red, but invisible or indistinct in 3% KOH, containing (2-)4-8 ascospores in biseriate or obliquely uniseriate arrangement.
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<emphasis italics="true" pageId="0" pageNumber="69">Ascospores</emphasis>
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(14.8-)17-21.5(-25)
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<normalizedToken originalValue="×">x</normalizedToken>
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(5.8-)6.5-8.3(-9.7)
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<normalizedToken originalValue="µm">µm</normalizedToken>
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, l/w (1.9-)2.3-3(-3.7) (n = 93), ellipsoid to subfusoid, symmetric or inequilateral, bicellular, hyaline, dilute brownish when old, slightly constricted at the central to slightly eccentric septum, thick-walled, becoming verruculose with age, devoid of appendages.
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</paragraph>
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<paragraph pageId="0" pageNumber="69">
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<emphasis bold="true" italics="true" pageId="0" pageNumber="69">Asexual morph</emphasis>
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acervular, intermingled with pseudostromata of the sexual morph or developing separately, conspicuous. First white tissue (central column) forming within the bark, becoming surrounded by a yellow margin and narrow whitish to yellowish discs emerging through bark cracks, followed by the production of conidia in olivaceous to dark brown chambers.
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<emphasis italics="true" pageId="0" pageNumber="69">Conidiomata</emphasis>
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1.3-2.7 mm diam., pulvinate, more or less circular in outline, scattered or crowded.
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<emphasis italics="true" pageId="0" pageNumber="69">Covering discs</emphasis>
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0.25-1.2 mm long, narrowly fusoid or longish to circular, flat to convex, whitish to yellowish, becoming obscured by large, coppery to olivaceous brown conidial deposits 1-4 mm diam., projecting to 1.2 mm, also confluent from two or several conidiomata; discs and pulvinate or conical columns beneath consisting of
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<emphasis italics="true" pageId="0" pageNumber="69">textura intricata</emphasis>
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of hyaline hyphae and numerous colourless crystals, becoming brittle with age.
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<emphasis italics="true" pageId="0" pageNumber="69">Conidiophores</emphasis>
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emerging around the central column from a pseudoparenchymatous base, ca. 40-70
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<normalizedToken originalValue="µm">µm</normalizedToken>
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long, filiform, branched near the base and usually 1-3 fold asymmetrically at higher levels, first hyaline, turning brown from their tips; terminal
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<emphasis italics="true" pageId="0" pageNumber="69">conidiogenous cells</emphasis>
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(10.5-)14.5-28(-36.5)
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<normalizedToken originalValue="×">x</normalizedToken>
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(1.7-)2.5-3.5(-4.2)
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<normalizedToken originalValue="µm">µm</normalizedToken>
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(n = 70), cylindrical and often widened towards base, with funnel-shaped collarette and up to 5 or 6 annellations, densely arranged, repetitive, producing
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<normalizedToken originalValue="α-conidia">α-conidia</normalizedToken>
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.
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<emphasis italics="true" pageId="0" pageNumber="69">Conidia</emphasis>
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(9.7-)11-13(-14.5)
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<normalizedToken originalValue="×">x</normalizedToken>
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(6.5-)7.7-9(-9.5)
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<normalizedToken originalValue="µm">µm</normalizedToken>
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, l/w (1.1-)1.3-1.6(-2.2) (n = 66), oval, subglobose to drop-like, unicellular, dark brown, thick-walled, with a broad lighter coloured median zone and a small scar, smooth. No
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<normalizedToken originalValue="β-conidia">β-conidia</normalizedToken>
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detected.
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</paragraph>
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<paragraph pageId="0" pageNumber="69">
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<emphasis bold="true" italics="true" pageId="0" pageNumber="69">Culture</emphasis>
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: Colony on MEA at room temperature circular, dense, first hyaline, turning rosy. Odour indistinct to musty.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="69" type="distribution">
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<paragraph pageId="0" pageNumber="69">Distribution and ecology.</paragraph>
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<paragraph pageId="0" pageNumber="69">
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<taxonomicName authorityName="Jaklitsch & Voglmayr" authorityYear="2020" class="Sordariomycetes" family="Melanconidaceae" genus="Melanconis" higherTaxonomySource="CoL" kingdom="Fungi" lsidName="Melanconis larissae" order="Diaporthales" pageId="0" pageNumber="69" phylum="Ascomycota" rank="species" species="larissae">
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<emphasis italics="true" pageId="0" pageNumber="69">Melanconis larissae</emphasis>
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</taxonomicName>
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is known from a single specimen collected in New York State from an unidentified species of
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<taxonomicName class="Magnoliopsida" family="Betulaceae" genus="Betula" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Betula" order="Fagales" pageId="0" pageNumber="69" phylum="Tracheophyta" rank="genus">
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<emphasis italics="true" pageId="0" pageNumber="69">Betula</emphasis>
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</taxonomicName>
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.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="69" type="notes">
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<paragraph pageId="0" pageNumber="69">Notes.</paragraph>
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<paragraph pageId="0" pageNumber="69">
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The description of this taxon is based on a single specimen with over-mature sexual morph and well-developed asexual morph with thick masses of conidia.
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<taxonomicName authorityName="Jaklitsch & Voglmayr" authorityYear="2020" class="Sordariomycetes" family="Melanconidaceae" genus="Melanconis" higherTaxonomySource="CoL" kingdom="Fungi" lsidName="Melanconis larissae" order="Diaporthales" pageId="0" pageNumber="69" phylum="Ascomycota" rank="species" species="larissae">
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<emphasis italics="true" pageId="0" pageNumber="69">Melanconis larissae</emphasis>
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</taxonomicName>
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differs from
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<taxonomicName lsidName="M. stilbostoma" pageId="0" pageNumber="69" rank="species" species="stilbostoma">
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<emphasis italics="true" pageId="0" pageNumber="69">M. stilbostoma</emphasis>
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</taxonomicName>
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by the broad light-coloured zone of its conidia. No
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<normalizedToken originalValue="β-conidia">β-conidia</normalizedToken>
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have been detected in this specimen, but oblong to ellipsoid, hyaline to dilute brownish conidia 5-9
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<normalizedToken originalValue="×">x</normalizedToken>
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1.7-5
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<normalizedToken originalValue="µm">µm</normalizedToken>
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, which we interpret as immature
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<normalizedToken originalValue="α-conidia">α-conidia</normalizedToken>
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.
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</paragraph>
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</subSubSection>
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</treatment>
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</document> |