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<document id="9AA85AC85E53874E72839FF0A8C8DB20" ID-DOI="10.11646/phytotaxa.345.3.2" ID-ISSN="1179-3163" ID-Zenodo-Dep="13708429" IM.bibliography_approvedBy="felipe" IM.illustrations_approvedBy="felipe" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="GgImagineBatch" IM.taxonomicNames_approvedBy="felipe" IM.treatmentCitations_approvedBy="felipe" IM.treatments_approvedBy="felipe" checkinTime="1725592851508" checkinUser="felipe" docAuthor="Parra, Luis A., Angelini, Claudio, Ortiz-Santana, Beatriz, Mata, Gerardo, Billette, Christophe, Rojo, Carlos, Chen, Jie &amp; Callac, Philippe" docDate="2018" docId="03B9FE3AA320FFCDF1F4FC86FBA9FCE5" docLanguage="en" docName="phytotaxa.345.3.2.pdf" docOrigin="Phytotaxa 345 (3)" docSource="http://dx.doi.org/10.11646/phytotaxa.345.3.2" docStyle="DocumentStyle:96748F8F1B6C902996E134952A3A36B9.13:Phytotaxa.2014-.journal_article" docStyleId="96748F8F1B6C902996E134952A3A36B9" docStyleName="Phytotaxa.2014-.journal_article" docStyleVersion="13" docTitle="Agaricus flavidodiscus L. A. Parra, Angelini &amp; Callac 2018, sp. nov." docType="treatment" docVersion="3" lastPageNumber="264" masterDocId="FF808642A30BFFE0F17CFFE8FFC8FF80" masterDocTitle="The genus Agaricus in the Caribbean. Nine new taxa mostly based on collections from the Dominican Republic" masterLastPageNumber="271" masterPageNumber="219" pageNumber="262" updateTime="1725605383008" updateUser="ExternalLinkService" zenodo-license-figures="UNSPECIFIED" zenodo-license-treatments="UNSPECIFIED">
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<mods:title id="9343A460410CA73527D07FBA617B4914">The genus Agaricus in the Caribbean. Nine new taxa mostly based on collections from the Dominican Republic</mods:title>
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<mods:namePart id="00C6988C880A5B280F945D02B5031088">Parra, Luis A.</mods:namePart>
<mods:affiliation id="DEEC2AC576B1ABFA5596606E3B0F0BE2">Avda. Padre Claret 7, 5 º G, 09400 Aranda de Duero, Burgos, Spain.</mods:affiliation>
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<mods:namePart id="96C1FC9EEF632D5440F7D79BFFF310D5">Angelini, Claudio</mods:namePart>
<mods:affiliation id="C5ED7B5DEC78A4E235CE689C8F5F16D7">Jardín Botánico Nacional Dr. Rafael Ma. Moscoso, Apartado 21 - 9, Santo Domingo, Dominican Republic. &amp; Via Cappuccini 78 / 8, 33170 Pordenone, Italia.</mods:affiliation>
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<mods:namePart id="4EAC58C00E96A0011B4B855F511A9388">Ortiz-Santana, Beatriz</mods:namePart>
<mods:affiliation id="9F9105B75493017BBD98E4DCC94A0593">US Forest Service, Northern Research Station, Center for Forest Mycology Research, One Gifford Pinchot Drive, Madison, Wisconsin 53726, USA.</mods:affiliation>
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<mods:namePart id="6D4C3A7B5ED76AF032160F79893787CF">Mata, Gerardo</mods:namePart>
<mods:affiliation id="0F0D7CD3E5A5AB3AC0BB1BE4BC5F2C10">Instituto de Ecología, A. C., Apartado Postal 63, 91000 Xalapa, Veracruz, Mexico.</mods:affiliation>
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<mods:namePart id="3298016E511E8AA6202A98D1C511F6AC">Billette, Christophe</mods:namePart>
<mods:affiliation id="A2445238C5C8DEDE765EE1E023D6BE1F">INRA, MycSA, CS 20032, 33882 Villenave dOrnon CEDEX, France</mods:affiliation>
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<mods:namePart id="A690441A5F8FEA694065FBFD7BEC009B">Rojo, Carlos</mods:namePart>
<mods:affiliation id="469DD18C93C05B703AE38DAE8926E447">Biotecnología Forestal Aplicada (IdForest), Calle Curtidores 17, 34004 Palencia, Palencia, Spain.</mods:affiliation>
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<mods:namePart id="B1EFAB525C1ACA42ADD67BBC0D1E2D71">Chen, Jie</mods:namePart>
<mods:affiliation id="97E35C6826CA8802B655BAED873C0F33">AV 7 1715, Córdoba Centro, 94500 Córdoba, Veracruz, Mexico.</mods:affiliation>
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<mods:namePart id="7BAA151291BFBB2BF7CEB1E6FECB28BC">Callac, Philippe</mods:namePart>
<mods:affiliation id="832B1F889DB0CC98293B710C2398EA39">INRA, MycSA, CS 20032, 33882 Villenave dOrnon CEDEX, France</mods:affiliation>
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<mods:title id="9A4A48D96E1E46CFB0835610141EB428">Phytotaxa</mods:title>
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<mods:date id="FABFD3408BA68F5BE4AD6BBCE919F1CD">2018</mods:date>
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<mods:number id="0EB8E8B015BFE5723AC490A260F43CF9">2018-03-27</mods:number>
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<mods:number id="19E3458974B0E64CD4F4072DD2EEE987">345</mods:number>
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<mods:number id="B04EC2DC1BD3504237810D7EB681A54E">3</mods:number>
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<mods:url id="3DD0B85248EBC74EAC3C7DB68E215D34">http://dx.doi.org/10.11646/phytotaxa.345.3.2</mods:url>
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<treatment id="03B9FE3AA320FFCDF1F4FC86FBA9FCE5" ID-DOI="http://doi.org/10.5281/zenodo.13709273" ID-Zenodo-Dep="13709273" LSID="urn:lsid:plazi:treatment:03B9FE3AA320FFCDF1F4FC86FBA9FCE5" httpUri="http://treatment.plazi.org/id/03B9FE3AA320FFCDF1F4FC86FBA9FCE5" lastPageId="45" lastPageNumber="264" pageId="43" pageNumber="262">
<subSubSection id="C30A1CA7A320FFCBF1F4FC86FEB1FC4F" pageId="43" pageNumber="262" type="nomenclature">
<paragraph id="8BAF4F2CA320FFCBF1F4FC86FC7AFC09" blockId="43.[136,946,878,905]" box="[136,946,878,905]" pageId="43" pageNumber="262">
<heading id="D0E7F840A320FFCBF1F4FC86FC7AFC09" box="[136,946,878,905]" fontSize="11" level="2" pageId="43" pageNumber="262" reason="3">
<taxonomicName id="4C1034AFA320FFCBF1F4FC86FD2FFC09" ID-CoL="5TNK2" authority="L.A. Parra, Angelini &amp; Callac" authorityName="L. A. Parra, Angelini &amp; Callac" authorityYear="2018" box="[136,743,878,905]" class="Agaricomycetes" family="Agaricaceae" genus="Agaricus" kingdom="Fungi" order="Agaricales" pageId="43" pageNumber="262" phylum="Basidiomycota" rank="species" species="flavidodiscus" status="sp. nov.">
<emphasis id="B964933EA320FFCBF1F4FC86FE46FC09" bold="true" box="[136,398,878,905]" italics="true" pageId="43" pageNumber="262">Agaricus flavidodiscus</emphasis>
L.A. Parra, Angelini &amp; Callac
</taxonomicName>
,
<taxonomicNameLabel id="A2572E45A320FFCBF38EFC98FC81FC09" box="[754,841,880,905]" pageId="43" pageNumber="262" rank="species">
<emphasis id="B964933EA320FFCBF38EFC98FC89FC09" box="[754,833,880,905]" italics="true" pageId="43" pageNumber="262">sp. nov</emphasis>
.
</taxonomicNameLabel>
(
<figureCitation id="132B53A9A320FFCBF224FC98FC61FC09" box="[856,937,880,905]" captionStart="FIGURE 20" captionStartId="44.[136,229,1944,1965]" captionTargetBox="[183,1405,190,1918]" captionTargetId="figure-17@44.[183,1405,190,1919]" captionTargetPageId="44" captionText="FIGURE 20. Macroscopic characters of A. flavidodiscus. AH. Basidiomata. A, E, H. (JBSD126488); B, C. (JBSD126487); D, FG. (JBSD126489, holotype).Microscopic characters of A.flavidodiscus.IL. In ammoniacal Congored.I.(JBSD126488); JL.(JBSD126489, holotype). I. Basidia. J. Spores. K. Hyphae of the lower surface of the annulus. L. Pileipellis hyphae. Photos by C.Angelini (ag) and L.A. Parra (hk)." figureDoi="http://doi.org/10.5281/zenodo.13708487" httpUri="https://zenodo.org/record/13708487/files/figure.png" pageId="43" pageNumber="262">Fig. 20</figureCitation>
)
</heading>
</paragraph>
<paragraph id="8BAF4F2CA320FFCBF1F4FC52FEB1FC4F" blockId="43.[136,377,954,975]" box="[136,377,954,975]" pageId="43" pageNumber="262">
<emphasis id="B964933EA320FFCBF1F4FC52FF30FC4F" bold="true" box="[136,248,954,975]" pageId="43" pageNumber="262">MycoBank</emphasis>
: MB823283.
</paragraph>
</subSubSection>
<subSubSection id="C30A1CA7A320FFCDF1F4FBE8FAFCFF5D" lastPageId="45" lastPageNumber="264" pageId="43" pageNumber="262" type="etymology">
<paragraph id="8BAF4F2CA320FFCBF1F4FBE8FF29FBBD" blockId="43.[136,1452,1024,2057]" pageId="43" pageNumber="262">
<emphasis id="B964933EA320FFCBF1F4FBE8FEC1FB99" bold="true" box="[136,265,1024,1049]" pageId="43" pageNumber="262">Etymology</emphasis>
: because of the yellowing (in Latin “
<emphasis id="B964933EA320FFCBF3D3FBE8FCC0FB99" box="[687,776,1024,1049]" italics="true" pageId="43" pageNumber="262">flavidus</emphasis>
”) color at the center of the pileus (in Latin “
<emphasis id="B964933EA320FFCBF47EFBE8FA80FB99" box="[1282,1352,1024,1049]" italics="true" pageId="43" pageNumber="262">discus</emphasis>
”) in this species.
</paragraph>
<paragraph id="8BAF4F2CA320FFCBF1C1FBA0FD10F9B5" blockId="43.[136,1452,1024,2057]" pageId="43" pageNumber="262">
<emphasis id="B964933EA320FFCBF1C1FBA0FCAAFBE1" bold="true" box="[189,866,1096,1121]" pageId="43" pageNumber="262">Original description, Macroscopic description: Pileus</emphasis>
(1.5)2.05.0 cm diam., at first hemispherical, sometimes trapezoid, then convex with the margin incurved for a long time, finally plano-convex, at the center rarely somewhat elevated or umbilicate-depressed, whitish with the center always typically colored yellow. In very mature basidiomata or those soaked by rain becomes completely pinkish brown, but always with a yellow center. Surface smooth, sericeous, not or slightly squamulose, sometimes and only in some basidiomata slightly fibrillose at the center, dull and dry. Margin thin, not exceeding the lamellae.
<emphasis id="B964933EA320FFCBF397FB14FC91FA95" bold="true" box="[747,857,1276,1301]" pageId="43" pageNumber="262">Lamellae</emphasis>
free, straight to slightly ventricose, intercalated with numerous lamellulae, at first pinkish white, then bright rose for a long time, finally pinkish brown with a paler and strongly eroded edge.
<emphasis id="B964933EA320FFCBF0FEFAACFE77FADD" bold="true" box="[386,447,1348,1373]" pageId="43" pageNumber="262">Stipe</emphasis>
36 ×
<quantity id="4CE8E2C9A320FFCBF372FAACFD47FADD" box="[526,655,1348,1373]" metricMagnitude="-3" metricUnit="m" metricValue="4.0" metricValueMax="5.0" metricValueMin="3.0" pageId="43" pageNumber="262" unit="cm" value="0.4" valueMax="0.5" valueMin="0.3">0.30.5 cm</quantity>
, cylindrical to slightly enlarged towards the base, curved and flexuose, stuffed, with an annulus in its upper third, sericeous above and below annulus, with the surface fibrillose-floccose, white, whitish cream or grayish in mature basidiomata, unchanging or slightly yellow on handling, base covered with a felty and white mycelial pad and with fine white mycelial strands.
<emphasis id="B964933EA320FFCBF2B0FA58FBF9FA49" bold="true" box="[972,1073,1456,1481]" pageId="43" pageNumber="262">Annulus</emphasis>
superous, double, white, thin but persistent, with the upper membrane perpendicular to stipe, up to
<quantity id="4CE8E2C9A320FFCBF219FA3CFC78FA6D" box="[869,944,1492,1517]" metricMagnitude="-3" metricUnit="m" metricValue="4.0" pageId="43" pageNumber="262" unit="cm" value="0.4">0.4 cm</quantity>
wide, and the lower membrane more narrow, appressed to the stipe.
<emphasis id="B964933EA320FFCBF0E8FA10FE3BF991" bold="true" box="[404,499,1528,1553]" pageId="43" pageNumber="262">Context</emphasis>
somewhat dense in pileus and stipe, when cut, white at first, then unchanging or slightly yellowing, odorless or odor slightly fungoid.
</paragraph>
<paragraph id="8BAF4F2CA320FFCBF1C1F9A8FBFBF8D5" blockId="43.[136,1452,1024,2057]" pageId="43" pageNumber="262">
<emphasis id="B964933EA320FFCBF1C1F9A8FD8AF9D9" bold="true" box="[189,578,1600,1625]" pageId="43" pageNumber="262">Microscopic description: Spores</emphasis>
4.334.825.17 × 3.103.303.51(3.61) μm, Q=1.321.461.61, ellipsoid, smooth, brown, without apical pore.
<emphasis id="B964933EA320FFCBF358F98CFDB5F9FD" bold="true" box="[548,637,1636,1661]" pageId="43" pageNumber="262">Basidia</emphasis>
1326 × 5.58.0 μm, tetrasporic, clavate or slightly truncate at the apex, sterigmata up to 3 μm long. In LAPAM17 the basidia, basidioles and subhymenial hyphae have abundant internal granular brown pigment.
<emphasis id="B964933EA320FFCBF0DAF944FD98F945" bold="true" box="[422,592,1708,1733]" pageId="43" pageNumber="262">Cheilocystidia</emphasis>
absent in the three collections studied.
<emphasis id="B964933EA320FFCBF571F944FB70F945" bold="true" box="[1037,1208,1708,1733]" pageId="43" pageNumber="262">Pleurocystidia</emphasis>
not observed.
<emphasis id="B964933EA320FFCBF422F944FE44F969" bold="true" pageId="43" pageNumber="262">Lower surface of the annulus</emphasis>
consisting of cylindrical hyphae, hyaline, 26 μm wide, the wider the more constricted at septa, the latter easy to disarticulate into elements with rounded ends. Inflated elements not observed.
<emphasis id="B964933EA320FFCBF5A1F91CFA98F88D" bold="true" box="[1245,1360,1780,1805]" pageId="43" pageNumber="262">Pileipellis</emphasis>
a cutis, hyphae 25 μm, not or slightly narrowed at septa, terminal elements very abundant with rounded ends, with internal granular pigment yellow or light brown in water.
<emphasis id="B964933EA320FFCBF3CDF8D4FC5DF8D5" bold="true" box="[689,917,1852,1877]" pageId="43" pageNumber="262">Clamp connections</emphasis>
not observed.
</paragraph>
<paragraph id="8BAF4F2CA320FFCBF1C1F888FAFAF8F9" blockId="43.[136,1452,1024,2057]" box="[189,1330,1888,1913]" pageId="43" pageNumber="262">
<emphasis id="B964933EA320FFCBF1C1F888FE3BF8F9" bold="true" box="[189,499,1888,1913]" pageId="43" pageNumber="262">Macrochemical reactions:</emphasis>
Schäffers reaction negative. KOH reaction positive, color orange yellow.
</paragraph>
<paragraph id="8BAF4F2CA320FFCBF1C1F86CFB44F841" blockId="43.[136,1452,1024,2057]" pageId="43" pageNumber="262">
<emphasis id="B964933EA320FFCBF1C1F86CFD1DF81D" bold="true" box="[189,725,1924,1949]" pageId="43" pageNumber="262">Habit, habitat, occurrence and distribution:</emphasis>
Gregarious, sometimes in groups of numerous basidiomata, in moist lowland broadleaf forests. Uncommon. Recorded only from
<collectingCountry id="F3070FBCA320FFCBF20FF840FBD0F841" box="[883,1048,1960,1985]" name="Dominican Republic" pageId="43" pageNumber="262">the Dominican</collectingCountry>
Republic.
</paragraph>
<paragraph id="8BAF4F2CA320FFCBF1C1F824FEA8F789" blockId="43.[136,1452,1024,2057]" pageId="43" pageNumber="262">
<emphasis id="B964933EA320FFCBF1C1F824FC1AF865" bold="true" box="[189,978,1994,2021]" pageId="43" pageNumber="262">
Species-specific ITS markers in
<emphasis id="B964933EA320FFCBF3F7F822FD6DF864" bold="true" box="[651,677,1994,2020]" italics="true" pageId="43" pageNumber="262">A.</emphasis>
sect.
<taxonomicName id="4C1034AFA320FFCBF272F822FC01F865" box="[782,969,1994,2021]" pageId="43" pageNumber="270" rank="section" section="Xanthodermatei">
<emphasis id="B964933EA320FFCBF272F822FC01F865" bold="true" box="[782,969,1994,2021]" italics="true" pageId="43" pageNumber="262">Xanthodermatei</emphasis>
</taxonomicName>
:
</emphasis>
ccacgAaatct@194, acatgAgcttc@264, tagagAggagc@482
</paragraph>
<caption id="DF6F1FA4A327FFCCF1F4F870FF34F799" ID-DOI="http://doi.org/10.5281/zenodo.13708487" ID-Zenodo-Dep="13708487" httpUri="https://zenodo.org/record/13708487/files/figure.png" pageId="44" pageNumber="263" startId="44.[136,229,1944,1965]" targetBox="[183,1405,190,1918]" targetPageId="44" targetType="figure">
<paragraph id="8BAF4F2CA327FFCCF1F4F870FF34F799" blockId="44.[136,1452,1944,2073]" pageId="44" pageNumber="263">
<emphasis id="B964933EA327FFCCF1F4F870FEC3F82D" bold="true" box="[136,267,1944,1965]" pageId="44" pageNumber="263">FIGURE 20.</emphasis>
Macroscopic characters of
<taxonomicName id="4C1034AFA327FFCCF360F870FD70F82D" authorityName="L. A. Parra, Angelini &amp; Callac" authorityYear="2018" box="[540,696,1944,1965]" class="Agaricomycetes" family="Agaricaceae" genus="Agaricus" kingdom="Fungi" order="Agaricales" pageId="44" pageNumber="263" phylum="Basidiomycota" rank="species" species="flavidodiscus">
<emphasis id="B964933EA327FFCCF360F870FD70F82D" box="[540,696,1944,1965]" italics="true" pageId="44" pageNumber="263">A. flavidodiscus</emphasis>
</taxonomicName>
.
<emphasis id="B964933EA327FFCCF3B9F870FD33F82D" bold="true" box="[709,763,1944,1965]" pageId="44" pageNumber="263">AH.</emphasis>
Basidiomata. A, E, H. (JBSD126488); B, C. (JBSD126487); D, FG. (JBSD126489, holotype).Microscopic characters of
<taxonomicName id="4C1034AFA327FFCCF304F854FCC7F851" authorityName="L. A. Parra, Angelini &amp; Callac" authorityYear="2018" box="[632,783,1980,2001]" class="Agaricomycetes" family="Agaricaceae" genus="Agaricus" kingdom="Fungi" order="Agaricales" pageId="44" pageNumber="263" phylum="Basidiomycota" rank="species" species="flavidodiscus">
<emphasis id="B964933EA327FFCCF304F854FCC7F851" box="[632,783,1980,2001]" italics="true" pageId="44" pageNumber="263">A. flavidodiscus</emphasis>
</taxonomicName>
.
<emphasis id="B964933EA327FFCCF264F854FC8BF851" bold="true" box="[792,835,1980,2001]" pageId="44" pageNumber="263">IL.</emphasis>
In ammoniacal Congo red. I. (JBSD126488); JL.(JBSD126489, holotype). I. Basidia. J. Spores. K. Hyphae of the lower surface of the annulus. L. Pileipellis hyphae. Photos by C. Angelini (ag) and L.A. Parra (hk).
</paragraph>
</caption>
<paragraph id="8BAF4F2CA326FFCDF1C1FF48FAFCFF5D" blockId="45.[136,1452,160,869]" pageId="45" pageNumber="264">
<emphasis id="B964933EA326FFCDF1C1FF48FF37FF39" bold="true" box="[189,255,160,185]" pageId="45" pageNumber="264">Note:</emphasis>
This species is characterized by its small size, the whitish pileus with a tipically yellow center, double and thin annulus, not or only slightly yellowing on handling and for being a species that is practically odorless.
</paragraph>
</subSubSection>
<subSubSection id="C30A1CA7A326FFCDF1C1FF00FBA9FCE5" pageId="45" pageNumber="264" type="materials_examined">
<paragraph id="8BAF4F2CA326FFCDF1C1FF00FAE7FEC9" blockId="45.[136,1452,160,869]" pageId="45" pageNumber="264">
<emphasis id="B964933EA326FFCDF1C1FF00FE65FE81" bold="true" box="[189,429,232,257]" pageId="45" pageNumber="264">Material examined:</emphasis>
<materialsCitation id="3B784571A326FFCDF0C4FF00FE71FEA5" collectingDate="2013-12-05" collectionCode="JBSD, LAPAM" country="Dominican Republic" location="Puerto Chiquito" municipality="Sosua" pageId="45" pageNumber="264" specimenCode="JBSD126487, LAPAM39" specimenCount="1" stateProvince="Puerto Plata">
<emphasis id="B964933EA326FFCDF0C4FF00FCC8FE81" bold="true" box="[440,768,232,257]" pageId="45" pageNumber="264">
<collectingCountry id="F3070FBCA326FFCDF0C4FF00FCC8FE81" box="[440,768,232,257]" name="Dominican Republic" pageId="45" pageNumber="264">DOMINICAN REPUBLIC</collectingCountry>
</emphasis>
,
<emphasis id="B964933EA326FFCDF26EFF00FC64FE81" bold="true" box="[786,940,232,257]" pageId="45" pageNumber="264">
<collectingRegion id="49D481CEA326FFCDF26EFF00FC64FE81" box="[786,940,232,257]" country="Dominican Republic" name="Puerto Plata" pageId="45" pageNumber="264">Puerto Plata</collectingRegion>
</emphasis>
,
<collectingMunicipality id="6BCBD556A326FFCDF2C2FF00FBCCFE81" box="[958,1028,232,257]" pageId="45" pageNumber="264">Sosúa</collectingMunicipality>
,
<location id="8ECF19F7A326FFCDF56FFF00FB05FE81" LSID="urn:lsid:plazi:treatment:03B9FE3AA320FFCDF1F4FC86FBA9FCE5:8ECF19F7A326FFCDF56FFF00FB05FE81" box="[1043,1229,232,257]" country="Dominican Republic" municipality="Sosua" name="Puerto Chiquito" pageId="45" pageNumber="264" stateProvince="Puerto Plata">Puerto Chiquito</location>
,
<date id="FFAE69ECA326FFCDF5A0FF00FA63FE81" box="[1244,1451,232,257]" pageId="45" pageNumber="264" value="2013-12-05">
<collectingDate id="EFEA9004A326FFCDF5A0FF00FA63FE81" box="[1244,1451,232,257]" pageId="45" pageNumber="264" value="2013-12-05">5 December 2013</collectingDate>
</date>
<specimenCode id="DBB6E757A326FFCDF1F4FEE4FED6FEA5" box="[136,286,268,293]" collectionCode="JBSD" country="Dominican Republic" httpUri="http://biocol.org/urn:lsid:biocol.org:col:15541" lsid="urn:lsid:biocol.org:col:15541" name="Jardín Botánico Nacional Dr. Rafael M. Moscoso" pageId="45" pageNumber="264" type="Herbarium">JBSD126487</specimenCode>
(
<specimenCode id="DBB6E757A326FFCDF053FEE4FE79FEA5" box="[303,433,268,293]" collectionCode="LAPAM" pageId="45" pageNumber="264">LAPAM39</specimenCode>
)
</materialsCitation>
;
<materialsCitation id="3B784571A326FFCDF0BBFEE4FA6FFEA5" box="[455,1447,268,293]" collectingDate="2011-11-19" collectionCode="JBSD, LAPAM" country="Dominican Republic" location="Puerto Chiquito" municipality="Sosua" pageId="45" pageNumber="264" specimenCode="JBSD126488, LAPAM17" specimenCount="1" stateProvince="Puerto Plata">
<emphasis id="B964933EA326FFCDF0BBFEE4FD97FEA5" bold="true" box="[455,607,268,293]" pageId="45" pageNumber="264">
<collectingRegion id="49D481CEA326FFCDF0BBFEE4FD97FEA5" box="[455,607,268,293]" country="Dominican Republic" name="Puerto Plata" pageId="45" pageNumber="264">Puerto Plata</collectingRegion>
</emphasis>
,
<collectingMunicipality id="6BCBD556A326FFCDF30CFEE4FD7EFEA5" box="[624,694,268,293]" pageId="45" pageNumber="264">Sosúa</collectingMunicipality>
,
<location id="8ECF19F7A326FFCDF3B8FEE4FCB3FEA5" LSID="urn:lsid:plazi:treatment:03B9FE3AA320FFCDF1F4FC86FBA9FCE5:8ECF19F7A326FFCDF3B8FEE4FCB3FEA5" box="[708,891,268,293]" country="Dominican Republic" municipality="Sosua" name="Puerto Chiquito" pageId="45" pageNumber="264" stateProvince="Puerto Plata">Puerto Chiquito</location>
,
<date id="FFAE69ECA326FFCDF2F5FEE4FBA1FEA5" box="[905,1129,268,293]" pageId="45" pageNumber="264" value="2011-11-19">
<collectingDate id="EFEA9004A326FFCDF2F5FEE4FBA1FEA5" box="[905,1129,268,293]" pageId="45" pageNumber="264" value="2011-11-19">19 November 2011</collectingDate>
</date>
,
<specimenCode id="DBB6E757A326FFCDF50AFEE4FAC4FEA5" box="[1142,1292,268,293]" collectionCode="JBSD" country="Dominican Republic" httpUri="http://biocol.org/urn:lsid:biocol.org:col:15541" lsid="urn:lsid:biocol.org:col:15541" name="Jardín Botánico Nacional Dr. Rafael M. Moscoso" pageId="45" pageNumber="264" type="Herbarium">JBSD126488</specimenCode>
(
<specimenCode id="DBB6E757A326FFCDF461FEE4FA57FEA5" box="[1309,1439,268,293]" collectionCode="LAPAM" pageId="45" pageNumber="264">LAPAM17</specimenCode>
)
</materialsCitation>
;
<materialsCitation id="3B784571A326FFCDF1F4FED8FAE2FEC9" box="[136,1322,302,329]" collectingDate="2014-12-05" collectionCode="JBSD, LAPAM" country="Dominican Republic" location="Puerto Chiquito" municipality="Sosua" pageId="45" pageNumber="264" specimenCode="JBSD126489, LAPAM 60" specimenCount="2" stateProvince="Puerto Plata" typeStatus="holotype">
<emphasis id="B964933EA326FFCDF1F4FED8FED6FEC9" bold="true" box="[136,286,304,329]" pageId="45" pageNumber="264">
<collectingRegion id="49D481CEA326FFCDF1F4FED8FED6FEC9" box="[136,286,304,329]" country="Dominican Republic" name="Puerto Plata" pageId="45" pageNumber="264">Puerto Plata</collectingRegion>
</emphasis>
,
<collectingMunicipality id="6BCBD556A326FFCDF050FED8FEBAFEC9" box="[300,370,304,329]" pageId="45" pageNumber="264">Sosúa</collectingMunicipality>
,
<location id="8ECF19F7A326FFCDF001FED8FDFAFEC9" LSID="urn:lsid:plazi:treatment:03B9FE3AA320FFCDF1F4FC86FBA9FCE5:8ECF19F7A326FFCDF001FED8FDFAFEC9" box="[381,562,304,329]" country="Dominican Republic" municipality="Sosua" name="Puerto Chiquito" pageId="45" pageNumber="264" stateProvince="Puerto Plata">Puerto Chiquito</location>
,
<date id="FFAE69ECA326FFCDF341FED8FCCFFEC9" box="[573,775,304,329]" pageId="45" pageNumber="264" value="2014-12-05">
<collectingDate id="EFEA9004A326FFCDF341FED8FCCFFEC9" box="[573,775,304,329]" pageId="45" pageNumber="264" value="2014-12-05">5 December 2014</collectingDate>
</date>
,
<specimenCode id="DBB6E757A326FFCDF26EFED8FC60FEC9" box="[786,936,304,329]" collectionCode="JBSD" country="Dominican Republic" httpUri="http://biocol.org/urn:lsid:biocol.org:col:15541" lsid="urn:lsid:biocol.org:col:15541" name="Jardín Botánico Nacional Dr. Rafael M. Moscoso" pageId="45" pageNumber="264" type="Herbarium">JBSD126489</specimenCode>
<emphasis id="B964933EA326FFCDF2D3FEC6FBEDFEC9" bold="true" box="[943,1061,302,329]" italics="true" pageId="45" pageNumber="264">
<typeStatus id="54ABF18EA326FFCDF2D3FEC6FBEDFEC9" box="[943,1061,302,329]" pageId="45" pageNumber="264" type="holotype">Holotypus</typeStatus>
</emphasis>
(
<specimenCode id="DBB6E757A326FFCDF54FFED8FB70FEC9" box="[1075,1208,304,329]" collectionCode="LAPAM" pageId="45" pageNumber="264">LAPAM 60</specimenCode>
<taxonomicName id="4C1034AFA326FFCDF5C3FEC7FAD7FEC9" box="[1215,1311,303,329]" class="Magnoliopsida" family="Asteraceae" genus="Isotypus" kingdom="Plantae" order="Asterales" pageId="45" pageNumber="264" phylum="Tracheophyta" rank="genus">
<emphasis id="B964933EA326FFCDF5C3FEC7FAD7FEC9" bold="true" box="[1215,1311,303,329]" italics="true" pageId="45" pageNumber="264">
<typeStatus id="54ABF18EA326FFCDF5C3FEC7FAD7FEC9" box="[1215,1311,303,329]" pageId="45" pageNumber="264" type="isotype">Isotypus</typeStatus>
</emphasis>
</taxonomicName>
)
</materialsCitation>
.
</paragraph>
<paragraph id="8BAF4F2CA326FFCDF1C1FEBCFBF4FC9D" blockId="45.[136,1452,160,869]" pageId="45" pageNumber="264">
<emphasis id="B964933EA326FFCDF1C1FEBCFE18FEED" bold="true" box="[189,464,340,365]" pageId="45" pageNumber="264">Taxonomic comments:</emphasis>
Macroscopically the most similar species are
<taxonomicName id="4C1034AFA326FFCDF286FEBCFA63FEED" authority="Murrill (1918: 80)" authorityName="Murrill" authorityPageNumber="80" authorityYear="1918" box="[1018,1451,340,365]" class="Agaricomycetes" family="Agaricaceae" genus="Agaricus" kingdom="Fungi" order="Agaricales" pageId="45" pageNumber="264" phylum="Basidiomycota" rank="species" species="ochraceidiscus">
<emphasis id="B964933EA326FFCDF286FEBCFB0FFEED" box="[1018,1223,340,365]" italics="true" pageId="45" pageNumber="264">A. ochraceidiscus</emphasis>
<bibRefCitation id="EF8132DDA326FFCDF5AFFEBCFA63FEED" author="Murrill, W. A." box="[1235,1451,340,365]" pageId="45" pageNumber="264" pagination="62 - 85" refId="ref30726" refString="Murrill, W. A. (1918) The Agaricaceae of tropical North America VIII. Mycologia 10 (2): 62 - 85. https: // doi. org / 10.2307 / 3753227" type="journal article" year="1918">Murrill (1918: 80)</bibRefCitation>
</taxonomicName>
and
<taxonomicName id="4C1034AFA326FFCDF1C5FE90FDF7FE11" authority="Heinem." authorityName="Heinem." box="[185,575,376,401]" class="Agaricomycetes" family="Agaricaceae" genus="Agaricus" kingdom="Fungi" order="Agaricales" pageId="45" pageNumber="264" phylum="Basidiomycota" rank="species" species="ochraceosquamulosus">
<emphasis id="B964933EA326FFCDF1C5FE90FE1BFE11" box="[185,467,376,401]" italics="true" pageId="45" pageNumber="264">A. ochraceosquamulosus</emphasis>
Heinem.
</taxonomicName>
, but both species are larger and their pilei are covered by ochraceous scales. Furthermore, the Schäffers reaction is positive of orange color in
<taxonomicName id="4C1034AFA326FFCDF211FE74FB4DFE35" box="[877,1157,412,437]" class="Agaricomycetes" family="Agaricaceae" genus="Agaricus" kingdom="Fungi" order="Agaricales" pageId="45" pageNumber="264" phylum="Basidiomycota" rank="species" species="ochraceosquamulosus">
<emphasis id="B964933EA326FFCDF211FE74FB4DFE35" box="[877,1157,412,437]" italics="true" pageId="45" pageNumber="264">A. ochraceosquamulosus</emphasis>
</taxonomicName>
(
<bibRefCitation id="EF8132DDA326FFCDF5EFFE74FA90FE35" author="Heinemann, P." box="[1171,1368,412,437]" pageId="45" pageNumber="264" pagination="231 - 248" refId="ref28845" refString="Heinemann, P. (1961) Agarici Austro-Americani: I. Agaricus of Trinidad. Kew Bulletin 15 (2): 231 - 248. https: // doi. org / 10.2307 / 4109361" type="journal article" year="1961">Heinemann 1961</bibRefCitation>
;
<bibRefCitation id="EF8132DDA326FFCDF418FE74FF0CFE59" author="Pegler, D. N." pageId="45" pageNumber="264" pagination="1 - 667" refId="ref31004" refString="Pegler, D. N. (1983) Agaric Flora of the Lesser Antilles. Kew Bulletin, Additional Series 9: 1 - 667." type="book chapter" year="1983">Pegler 1983</bibRefCitation>
). Microscopically, the spore size of the original description of
<taxonomicName id="4C1034AFA326FFCDF2FAFE28FB86FE59" authorityName="Murrill" authorityYear="1918" box="[902,1102,448,473]" class="Agaricomycetes" family="Agaricaceae" genus="Agaricus" kingdom="Fungi" order="Agaricales" pageId="45" pageNumber="264" phylum="Basidiomycota" rank="species" species="ochraceidiscus">
<emphasis id="B964933EA326FFCDF2FAFE28FB86FE59" box="[902,1102,448,473]" italics="true" pageId="45" pageNumber="264">A. ochraceidiscus</emphasis>
</taxonomicName>
(4.55.0 × 3.03.5 μm) agrees with our collections, but
<bibRefCitation id="EF8132DDA326FFCDF0D9FE0CFD80FE7D" author="Murrill, W. A." box="[421,584,484,509]" pageId="45" pageNumber="264" pagination="62 - 85" refId="ref30726" refString="Murrill, W. A. (1918) The Agaricaceae of tropical North America VIII. Mycologia 10 (2): 62 - 85. https: // doi. org / 10.2307 / 3753227" type="journal article" year="1918">Murrill (1918)</bibRefCitation>
did not note cheilocystidia. However, the
<typeStatus id="54ABF18EA326FFCDF550FE0CFB46FE7D" box="[1068,1166,484,509]" pageId="45" pageNumber="264" type="holotype">holotype</typeStatus>
of
<taxonomicName id="4C1034AFA326FFCDF5C9FE0CFAB6FE7D" authorityName="Murrill" authorityYear="1918" box="[1205,1406,484,509]" class="Agaricomycetes" family="Agaricaceae" genus="Agaricus" kingdom="Fungi" order="Agaricales" pageId="45" pageNumber="264" phylum="Basidiomycota" rank="species" species="ochraceidiscus">
<emphasis id="B964933EA326FFCDF5C9FE0CFAB6FE7D" box="[1205,1406,484,509]" italics="true" pageId="45" pageNumber="264">A. ochraceidiscus</emphasis>
</taxonomicName>
has been studied by
<bibRefCitation id="EF8132DDA326FFCDF03AFDE0FE33FDA1" author="Freeman, A. E." box="[326,507,520,545]" pageId="45" pageNumber="264" pagination="1 - 49" refId="ref28402" refString="Freeman, A. E. (1979) Agaricus in North America: Type studies. Mycotaxon 8 (1): 1 - 49." type="journal article" year="1979">Freeman (1979)</bibRefCitation>
and
<bibRefCitation id="EF8132DDA326FFCDF34BFDE0FD1AFDA1" author="Pegler, D. N." box="[567,722,520,545]" pageId="45" pageNumber="264" pagination="855 - 888" refId="ref31031" refString="Pegler, D. N. (1987) A revision of the Agaricales of Cuba 2. Species described by Earle and Murrill. Kew Bulletin 42 (4): 855 - 888. https: // doi. org / 10.2307 / 4109932" type="journal article" year="1987">Pegler (1987)</bibRefCitation>
and both indicated larger spore sizes (Freeman: 4.56.0 × 3.8 4.5 μm; Pegler: 5.05.76.0 × 3.54.04.2 μm) than those provided by Murrill, and are practically out of range of our measurements for
<taxonomicName id="4C1034AFA326FFCDF0FAFDB8FDF2FDE9" authorityName="L. A. Parra, Angelini &amp; Callac" authorityYear="2018" box="[390,570,592,617]" class="Agaricomycetes" family="Agaricaceae" genus="Agaricus" kingdom="Fungi" order="Agaricales" pageId="45" pageNumber="264" phylum="Basidiomycota" rank="species" species="flavidodiscus">
<emphasis id="B964933EA326FFCDF0FAFDB8FDF2FDE9" box="[390,570,592,617]" italics="true" pageId="45" pageNumber="264">A. flavidodiscus</emphasis>
</taxonomicName>
(4.334.825.17 × 3.103.303.51(3.61) μm). In addition, both authors also mentioned the presence of cheilocystidia, “scattered” according to Freeman, but “crowded” clavate often subcapitate to Pegler. Similarly, the spore size of
<taxonomicName id="4C1034AFA326FFCDF339FD70FCA9FD31" box="[581,865,664,689]" class="Agaricomycetes" family="Agaricaceae" genus="Agaricus" kingdom="Fungi" order="Agaricales" pageId="45" pageNumber="264" phylum="Basidiomycota" rank="species" species="ochraceosquamulosus">
<emphasis id="B964933EA326FFCDF339FD70FCA9FD31" box="[581,865,664,689]" italics="true" pageId="45" pageNumber="264">A. ochraceosquamulosus</emphasis>
</taxonomicName>
are also larger both in the original description by Heinemann (5.15.7 × 3.64.0 μm) and in collections studied later by Pegler (4.55.46.5 × 3.23.74.2 μm); and both authors also indicated the presence of clavate or pyriform cheilocystidia (described erroneously as lanceolate in Heinemann; see figure 8 on page 243) even if they were described as inconspicuous.
</paragraph>
<paragraph id="8BAF4F2CA326FFCDF1C1FCC0FBA9FCE5" blockId="45.[136,1452,160,869]" pageId="45" pageNumber="264">
<emphasis id="B964933EA326FFCDF1C1FCC0FE08FCC1" bold="true" box="[189,448,808,833]" pageId="45" pageNumber="264">Additional comments</emphasis>
: In
<taxonomicName id="4C1034AFA326FFCDF08FFCC0FD61FCC1" authorityName="L. A. Parra, Angelini &amp; Callac" authorityYear="2018" box="[499,681,808,833]" class="Agaricomycetes" family="Agaricaceae" genus="Agaricus" kingdom="Fungi" order="Agaricales" pageId="45" pageNumber="264" phylum="Basidiomycota" rank="species" species="flavidodiscus">
<emphasis id="B964933EA326FFCDF08FFCC0FD61FCC1" box="[499,681,808,833]" italics="true" pageId="45" pageNumber="264">A. flavidodiscus</emphasis>
</taxonomicName>
, we noted a high intraspecific variability with heteromorphisms at eight, four and zero positions in
<collectionCode id="ED01D7E9A326FFCDF08FFCA4FD9AFCE5" box="[499,594,844,869]" pageId="45" pageNumber="264">LAPAM</collectionCode>
60,
<collectionCode id="ED01D7E9A326FFCDF3F8FCA4FD2BFCE5" box="[644,739,844,869]" pageId="45" pageNumber="264">LAPAM</collectionCode>
17, and
<collectionCode id="ED01D7E9A326FFCDF238FCA4FC6BFCE5" box="[836,931,844,869]" pageId="45" pageNumber="264">LAPAM</collectionCode>
39, respectively.
</paragraph>
</subSubSection>
</treatment>
</document>