<documentID-CLB-Dataset="294822"ID-DOI="http://dx.doi.org/10.3897/mycokeys.105.118826"ID-GBIF-Dataset="76e0cb3e-ea06-48e9-bc3c-3839a445cc5f"ID-PMC="PMC11066505"ID-Pensoft-Pub="1314-4049-105-49"ID-Pensoft-UUID="63E3C66A188C542C9F8FEECAAC0980CF"ID-PubMed="38708027"ModsDocID="1314-4049-105-49"checkinTime="1714135360939"checkinUser="pensoft"docAuthor="Na, Qin, Zeng, Hui, Hu, Yaping, Ding, Hui, Ke, Binrong, Zeng, Zhiheng, Liu, Changjing, Cheng, Xianhao & Ge, Yupeng"docDate="2024"docId="75656C5CF8425871BDDCACDA1742F6A7"docLanguage="en"docName="MycoKeys 105: 49-95"docOrigin="MycoKeys 105"docPubDate="2024-04-25"docSource="http://dx.doi.org/10.3897/mycokeys.105.118826"docTitle="Marasmiellomycena tomentosa Q. Na & Y. P. Ge 2024, sp. nov."docType="treatment"docVersion="4"id="63E3C66A188C542C9F8FEECAAC0980CF"lastPageNumber="49"masterDocId="63E3C66A188C542C9F8FEECAAC0980CF"masterDocTitle="Morphological and phylogenetic analyses reveal five new species of Porotheleaceae (Agaricales, Basidiomycota) from China"masterLastPageNumber="95"masterPageNumber="49"pageNumber="49"updateTime="1732691486440"updateUser="ExternalLinkService">
<mods:titleid="D243D76A25779389A8F01EB666A4453E">Morphological and phylogenetic analyses reveal five new species of Porotheleaceae (Agaricales, Basidiomycota) from China</mods:title>
<mods:affiliationid="209BA531407EC447E118F3284E597D65">Institute of Mycological Science and Technology, School of Agriculture, Ludong University, Yantai 264025, China</mods:affiliation>
<mods:affiliationid="009550FAD0E5AF4D184BD4D4D74A349F">Institute of Edible Fungi, Fujian Academy of Agricultural Sciences; National and Local Joint Engineering Research Center for Breeding & Cultivation of Features Edible Fungi, Fuzhou 350014, China</mods:affiliation>
<mods:affiliationid="B80363FF1AF602D7D22A5FA828570042">Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, State Environmental Protection Scientific Observation and Research Station for Ecological Environment of Wuyi Mountains, Nanjing 210042, China</mods:affiliation>
<mods:affiliationid="56659AC983308ECF07257B076218B1B6">Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, State Environmental Protection Scientific Observation and Research Station for Ecological Environment of Wuyi Mountains, Nanjing 210042, China</mods:affiliation>
<mods:affiliationid="7AA70954DB4BA5ECF74EBAC0305194DB">Institute of Edible Fungi, Fujian Academy of Agricultural Sciences; National and Local Joint Engineering Research Center for Breeding & Cultivation of Features Edible Fungi, Fuzhou 350014, China</mods:affiliation>
<mods:affiliationid="DACC0C1CC45370656A55F7232DBDB43D">Institute of Edible Fungi, Fujian Academy of Agricultural Sciences; National and Local Joint Engineering Research Center for Breeding & Cultivation of Features Edible Fungi, Fuzhou 350014, China</mods:affiliation>
<mods:affiliationid="E29544F5D07256C744458E87B7BE7A82">Institute of Mycological Science and Technology, School of Agriculture, Ludong University, Yantai 264025, China</mods:affiliation>
<mods:affiliationid="5542B54E38012F8205BD4A732C6872A8">Institute of Mycological Science and Technology, School of Agriculture, Ludong University, Yantai 264025, China & Institute of Edible Fungi, Fujian Academy of Agricultural Sciences; National and Local Joint Engineering Research Center for Breeding & Cultivation of Features Edible Fungi, Fuzhou 350014, China</mods:affiliation>
<taxonomicNameid="B668CE9C11AD4A48F857BDCC2576D056"LSID="75656C5C-F842-5871-BDDC-ACDA1742F6A7"authority="Q. Na & Y. P. Ge"authorityName="Q. Na & Y. P. Ge"authorityYear="2024"class="Agaricomycetes"family="Porotheleaceae"genus="Marasmiellomycena"higherTaxonomySource="CoL"kingdom="Fungi"lsidName="Marasmiellomycena tomentosa"order="Agaricales"pageId="0"pageNumber="49"phylum="Basidiomycota"rank="species"species="tomentosa"status="sp. nov.">Marasmiellomycena tomentosa Q.Na & Y.P.Ge</taxonomicName>
<figureCitationid="186158ED24B8188BF4691AF6AB41E8D8"captionStart="Figure 11"captionStartId="F10"captionText="Figure 11. Basidiomata of Marasmiellomycena tomentosa A-D collection FFAAS 1036, holotype E, F collection FFAAS 1037 G, H collection FFAAS 1038. Scale bars: 10 mm (A-H)."figureDoi="10.3897/mycokeys.105.118826.figure11"httpUri="https://binary.pensoft.net/fig/1032677"pageId="0"pageNumber="49">Figs 11</figureCitation>
<figureCitationid="753B546886017D52E499DB17B39BEE8D"captionStart="Figure 12"captionStartId="F11"captionText="Figure 12. Morphological features of Marasmiellomycena tomentosa (FFAAS 1036, holotype) A basidiomata B basidiospores C basidia D pileipellis and pileocystidia. Scale bars: 10 mm (A); 10 μm (B-D)."figureDoi="10.3897/mycokeys.105.118826.figure12"httpUri="https://binary.pensoft.net/fig/1032678"pageId="0"pageNumber="49">, 12</figureCitation>
<figureCitationid="B55B23656A655D7F3E0B25F8A0198B8D"captionStart="Figure 13"captionStartId="F12"captionText="Figure 13. Morphological features of Marasmiellomycena tomentosa (FFAAS 1036, holotype) A stipitipellis and caulocystidia. Scale bars: 10 μm (A)."figureDoi="10.3897/mycokeys.105.118826.figure13"httpUri="https://binary.pensoft.net/fig/1032679"pageId="0"pageNumber="49">, 13</figureCitation>
<figureCitationid="8294578B94A30AB1266CF332B8E4057E"captionStart="Figure 14"captionStartId="F13"captionText="Figure 14. Microscopic features of Marasmiellomycena tomentosa (FFAAS 1036, holotype) A-E basidiospores F basidia G - J lamellae margin. Scale bars: 5 μm (A-E); 10 μm (F-J). Structures were stained in 5 % KOH aqueous solution before photographing."figureDoi="10.3897/mycokeys.105.118826.figure14"httpUri="https://binary.pensoft.net/fig/1032680"pageId="0"pageNumber="49">, 14</figureCitation>
Pileus and stipe distinctly tomentose. Pileus dark brown, subsquamulose. Basidiospores narrowly ellipsoid, slightly amyloid. Hymenial cystidia absent. Pileipellis and stipitipellis sarcodimitic, hyphae thick-walled with yellowish-brown pigments. Pileocystidia and caulocystidia thick-walled with yellow contents. Differs from
<taxonomicNameid="264AF4C1650B589FC0BEB687CFBF4F2F"authorityName="Q. Na & Y. P. Ge"authorityYear="2024"class="Agaricomycetes"family="Porotheleaceae"genus="Marasmiellomycena"higherTaxonomySource="CoL"kingdom="Fungi"lsidName="Marasmiellomycena tomentosa"order="Agaricales"pageId="0"pageNumber="49"phylum="Basidiomycota"rank="species"species="tomentosa">
<taxonomicNameid="E1E97BF1CC32F2DD9582EC2B21BC2BF8"authorityName="Q. Na & Y. P. Ge"authorityYear="2024"class="Agaricomycetes"family="Porotheleaceae"genus="Marasmiellomycena"higherTaxonomySource="CoL"kingdom="Fungi"lsidName="Marasmiellomycena tomentosa"order="Agaricales"pageId="0"pageNumber="49"phylum="Basidiomycota"rank="species"species="tomentosa">
<taxonomicNameid="07C1D471C6B5059A09A32B08BB066F69"authorityName="Q. Na & Y. P. Ge"authorityYear="2024"class="Agaricomycetes"family="Porotheleaceae"genus="Marasmiellomycena"higherTaxonomySource="CoL"kingdom="Fungi"lsidName="Marasmiellomycena tomentosa"order="Agaricales"pageId="0"pageNumber="49"phylum="Basidiomycota"rank="species"species="tomentosa">
Pileus 0.5-18.5 mm in diameter, at first convex or campanulate, soon expanding to plano-convex, always depressed to umbilicate at the centre, surface dry, densely covered with minute white (LIII) pubescence, tomentose all over, subsquamulose, ground colour Verona Brown (XXIX13′′k) to Warm Sepia (XXIX13′′m), Mustard Yellow (XVI19′b), Old Gold (XVI19′i) to Buffy Citrine (XVI19′k),
Olive (XVI19′m) at the centre, fading to Wax Yellow (XLVI21′′′′f) when old, margin slightly sulcate, uplifted or recurved in age. Context thin, Primrose Yellow (XXX23′′d). Lamellae decurrent to subdecurrent, Wax Yellow (XLVI21′′′′f), Mustard Yellow (XVI19′b), with 1-2 tiers of lamellulae, edges concolorous with the face, slightly fimbriate edge. Stipe 7.5-21.0
Olive (XVI19′m), Benzo Brown (XLVI13′′′′i), Fuscous (XLVI13′′′′m), Deep Greyish-Olive (XLVI21′′′′b) towards the base, densely and minutely silky-fibrillose and white (LIII) pruinose-floccose to tomentose throughout, base covered with white mycelium. Odour indistinct to fungoid, taste mild.
<taxonomicNameid="263ACB31F38115D9C6A4B31061D000BA"authorityName="Q. Na & Y. P. Ge"authorityYear="2024"class="Agaricomycetes"family="Porotheleaceae"genus="Marasmiellomycena"higherTaxonomySource="CoL"kingdom="Fungi"lsidName="Marasmiellomycena tomentosa"order="Agaricales"pageId="0"pageNumber="49"phylum="Basidiomycota"rank="species"species="tomentosa">
<taxonomicNameid="CCA00098501E3CB918335A83EB90B179"authorityName="Q. Na & Y. P. Ge"authorityYear="2024"class="Agaricomycetes"family="Porotheleaceae"genus="Marasmiellomycena"higherTaxonomySource="CoL"kingdom="Fungi"lsidName="Marasmiellomycena tomentosa"order="Agaricales"pageId="0"pageNumber="49"phylum="Basidiomycota"rank="species"species="tomentosa">
is a rare thermophilous species reported from south-eastern areas of China from July to August on rotten branches, twigs and woody debris of deciduous and coniferous trees (
). The most distinctive characteristics of this species are a tomentose, brown subsquamulose pileus, a tomentose stipe, narrowly ellipsoid and slightly amyloid basidiospores, the absence of hymenial cystidia and thick-walled pileipellis, stipitipellis, pileocystidia and caulocystidia with yellow or brownish-orange contents. Species morphologically most closely allied to
<taxonomicNameid="A5B4475FFA3B2AD8172A734F87194C2B"authorityName="Q. Na & Y. P. Ge"authorityYear="2024"class="Agaricomycetes"family="Porotheleaceae"genus="Marasmiellomycena"higherTaxonomySource="CoL"kingdom="Fungi"lsidName="Marasmiellomycena tomentosa"order="Agaricales"pageId="0"pageNumber="49"phylum="Basidiomycota"rank="species"species="tomentosa">
by the presence of a pale beige to brown pileus with finely tomentose to pubescent pileus, but differs in having white to cream-white or beige lamellae rather than yellow, ellipsoid to ellipsoid-fusiform basidiospores [(6.5-)7.0-9.0(-9.5)
-not only regarding its phylogenetic placement, but also in terms of morphological features (
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). The two species resemble one another in having a similarly-coloured pileus and stipe, similarly-shaped basidiospores, pileocystidia and caulocystidia and a yellowish-pigmented pileipellis and stipitipellis; however, the minutely pubescent, granulose to subsquamulose pileus, as well as the relative abundance of cheilocystidia, appear to be variable characters in
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;
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). According to the description of
<bibRefCitationid="DFF4600BB1D921B04A851A4333637789"author="Consiglio, G"journalOrPublisher="Edition Mykologia, Lucerne"pageId="0"pageNumber="49"refId="B13"refString="Consiglio, G, Vizzini, A, Cooper, J, Marchetti, M, Angelini, C, Brugaletta, E, Setti, L, 2022. The agaricoid members of the genus Porotheleum (Porotheleaceae, Agaricales), Porotheleum emend., Porotheleaceae s. stricto, and new genera for Agaricus floccipes and Mycena subalpina. Rivista di Micologia 64(2): 99-190."title="The agaricoid members of the genus Porotheleum (Porotheleaceae, Agaricales), Porotheleum emend., Porotheleaceae s. stricto, and new genera for Agaricus floccipes and Mycena subalpina. Rivista di Micologia 64 (2): 99 - 190."year="2022">Consiglio et al. (2022)</bibRefCitation>
<taxonomicNameid="A5965EB56BD169A7C3454035F8D0C389"authorityName="Q. Na & Y. P. Ge"authorityYear="2024"baseAuthorityName="Q. Na & Y. P. Ge"baseAuthorityYear="2024"class="Agaricomycetes"family="Porotheleaceae"genus="Marasmiellomycena"higherTaxonomySource="CoL"kingdom="Fungi"lsidName="Marasmiellomycena albodescendens"order="Agaricales"pageId="0"pageNumber="49"phylum="Basidiomycota"rank="species"species="albodescendens">
