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<document id="1EE746C033F539E5F72005B89B4C4E5F" ID-DOI="10.11646/phytotaxa.345.3.2" ID-ISSN="1179-3163" 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="03B9FE3AA31EFFF8F1F4FB12FE69F9FD" 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 argenteopurpureus L. A. Parra, Angelini &amp; Callac 2018, sp. nov." docType="treatment" docVersion="1" lastPageNumber="243" 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="240" updateTime="1725601742273" updateUser="GgImagineBatch" zenodo-license-figures="UNSPECIFIED" zenodo-license-treatments="UNSPECIFIED">
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<mods:title id="C2FF3139B0B5B927EB4FFD9D13B21850">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="336085F9F6B847727438A01D44D9AEF8">Parra, Luis A.</mods:namePart>
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<mods:namePart id="6B13397E94BFCE58D9055E99F93B5E65">Angelini, Claudio</mods:namePart>
<mods:affiliation id="4664E95A141A78E8CBC414C92623EA3F">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="0F846DF8FE50954E4B914FC321C3136D">Ortiz-Santana, Beatriz</mods:namePart>
<mods:affiliation id="ECECB51E842FB28E42AB2030D13BC7C3">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="C6988352ACA5B0EB8E028FDD7626B87B">Mata, Gerardo</mods:namePart>
<mods:affiliation id="4B7B5DACA97B8DBE0CFEC0B458CD6014">Instituto de Ecología, A. C., Apartado Postal 63, 91000 Xalapa, Veracruz, Mexico.</mods:affiliation>
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<mods:namePart id="87AE1CB576661B53A58FE8018A561F70">Billette, Christophe</mods:namePart>
<mods:affiliation id="BCA12F847C429DB85C4705E290D98E84">INRA, MycSA, CS 20032, 33882 Villenave dOrnon CEDEX, France</mods:affiliation>
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<mods:namePart id="BABD4CB6B35EF2472C4E263D3B2A381F">Rojo, Carlos</mods:namePart>
<mods:affiliation id="AAD5DEB0CA7BDC9DD8E5753E201D69DE">Biotecnología Forestal Aplicada (IdForest), Calle Curtidores 17, 34004 Palencia, Palencia, Spain.</mods:affiliation>
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<mods:namePart id="81F2F4E6480470BCE7926F130457BFB5">Chen, Jie</mods:namePart>
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<mods:namePart id="5AD0E8D11C866F7E4795C79514184897">Callac, Philippe</mods:namePart>
<mods:affiliation id="17A7F0E3A7A49081311D6AC5298F12A1">INRA, MycSA, CS 20032, 33882 Villenave dOrnon CEDEX, France</mods:affiliation>
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<mods:title id="424025BE4B31FB651772AC94FCFE316A">Phytotaxa</mods:title>
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<mods:date id="19A56E8188FAD5697CB1739716B575A6">2018</mods:date>
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<mods:identifier id="CFFD612F812A847A37BC33875F32256C" type="DOI">10.11646/phytotaxa.345.3.2</mods:identifier>
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<paragraph id="8BAF4F2CA31EFFF5F1F4FB12FBD8FA95" blockId="21.[136,1040,1274,1301]" box="[136,1040,1274,1301]" pageId="21" pageNumber="240">
<heading id="D0E7F840A31EFFF5F1F4FB12FBD8FA95" box="[136,1040,1274,1301]" fontSize="11" level="2" pageId="21" pageNumber="240" reason="3">
<taxonomicName id="4C1034AFA31EFFF5F1F4FB12FCE5FA95" ID-CoL="65M43" authority="L.A. Parra, Angelini &amp; Callac" authorityName="L. A. Parra, Angelini &amp; Callac" authorityYear="2018" box="[136,813,1274,1301]" class="Agaricomycetes" family="Agaricaceae" genus="Agaricus" kingdom="Fungi" order="Agaricales" pageId="21" pageNumber="240" phylum="Basidiomycota" rank="species" species="argenteopurpureus" status="sp. nov.">
<emphasis id="B964933EA31EFFF5F1F4FB12FE1CFA95" bold="true" box="[136,468,1274,1301]" italics="true" pageId="21" pageNumber="240">Agaricus argenteopurpureus</emphasis>
L.A. Parra, Angelini &amp; Callac
</taxonomicName>
,
<taxonomicNameLabel id="A2572E45A31EFFF5F244FB14FC47FA95" box="[824,911,1276,1301]" pageId="21" pageNumber="240" rank="species">
<emphasis id="B964933EA31EFFF5F244FB14FC4FFA95" box="[824,903,1276,1301]" italics="true" pageId="21" pageNumber="240">sp. nov</emphasis>
.
</taxonomicNameLabel>
(
<figureCitation id="132B53A9A31EFFF5F2E2FB14FBC0FA95" box="[926,1032,1276,1301]" captionStart-0="FIGURE 8" captionStart-1="FIGURE 9" captionStartId-0="22.[136,229,1999,2020]" captionStartId-1="23.[136,229,1899,1920]" captionTargetBox-0="[170,1417,209,1973]" captionTargetBox-1="[151,1436,190,1875]" captionTargetId-0="figure-17@22.[170,1417,209,1973]" captionTargetId-1="figure-14@23.[151,1436,190,1875]" captionTargetPageId-0="22" captionTargetPageId-1="23" captionText-0="FIGURE 8. Macroscopic characters of A. argenteopurpureus. AF. Basidiomata.AB. (JBSD126500); C, F. (JBSD126501, holotype); D. (JBSD126502); E. (JBSD126503). Photos by C. Angelini." captionText-1="FIGURE 9. Microscopic characters of A. argenteopurpureus. AH. (JBSD126501, holotype) (AG in ammoniacal Congo red; H in water). AC. Cheilocystidia. D. Basidia. E. Spores. F. Hyphae of the lower surface of the annulus. GH. Pileipellis hyphae. Photos by L.A. Parra." pageId="21" pageNumber="240">Figs. 89</figureCitation>
)
</heading>
</paragraph>
<paragraph id="8BAF4F2CA31EFFF5F1F4FAAEFEB3FADB" blockId="21.[136,379,1350,1371]" box="[136,379,1350,1371]" pageId="21" pageNumber="240">
<emphasis id="B964933EA31EFFF5F1F4FAAEFEC8FADB" bold="true" box="[136,256,1350,1371]" pageId="21" pageNumber="240">MycoBank:</emphasis>
MB823280.
</paragraph>
</subSubSection>
<subSubSection id="C30A1CA7A31EFFF8F1F4FA64FE41FC09" lastPageId="24" lastPageNumber="243" pageId="21" pageNumber="240" type="etymology">
<paragraph id="8BAF4F2CA31EFFF5F1F4FA64FF1BFA49" blockId="21.[136,1452,1420,1985]" pageId="21" pageNumber="240">
<emphasis id="B964933EA31EFFF5F1F4FA64FEDBFA25" bold="true" box="[136,275,1420,1445]" pageId="21" pageNumber="240">Etymology:</emphasis>
for the violet purple color (in Latin “
<emphasis id="B964933EA31EFFF5F3B0FA64FCF6FA25" box="[716,830,1420,1445]" italics="true" pageId="21" pageNumber="240">purpureus</emphasis>
”) with silver (in Latin “
<emphasis id="B964933EA31EFFF5F520FA64FB01FA25" box="[1116,1225,1420,1445]" italics="true" pageId="21" pageNumber="240">argenteus</emphasis>
”) highlights on the pileus.
</paragraph>
<paragraph id="8BAF4F2CA31EFFF5F1C1FA3CFB74F841" blockId="21.[136,1452,1420,1985]" pageId="21" pageNumber="240">
<emphasis id="B964933EA31EFFF5F1C1FA3CFCAFFA6D" bold="true" box="[189,871,1492,1517]" pageId="21" pageNumber="240">Original description, Macroscopic description: Pileus</emphasis>
(2.5)3.03.5(4.0) cm diam., at first conicohemispherical, then quickly plano-convex or plane with a slightly revolute margin; frequently depressed at center, more rarely with a broad umbo at center and depressed at the peridiscal area, grayish with silver highlights, covered partially or entirely with purple fibrils that tend to merge simulating squamules, closer and appressed at disc where it is very dark purple vinaceous. Surface smooth, fibrillose, dry and dull. Margin fine, not exceeding the lamellae, not striate in immature or young basidiomata but strongly striate or rimose, in mature basidiomata or after rain.
<emphasis id="B964933EA31EFFF5F441F960FA63F921" bold="true" box="[1341,1451,1672,1697]" pageId="21" pageNumber="240">Lamellae</emphasis>
free, slightly ventricose, intercalated with numerous lamellulae, at first very pale, grayish pink, then brownish pink, finally dark grayish brown, with a paler and slightly eroded edge.
<emphasis id="B964933EA31EFFF5F219F938FC6AF969" bold="true" box="[869,930,1744,1769]" pageId="21" pageNumber="240">Stipe</emphasis>
3.54.5 ×
<quantity id="4CE8E2C9A31EFFF5F565F938FB51F969" box="[1049,1177,1744,1769]" metricMagnitude="-3" metricUnit="m" metricValue="3.5" metricValueMax="4.0" metricValueMin="3.0" pageId="21" pageNumber="240" unit="cm" value="0.35" valueMax="0.4" valueMin="0.3">0.30.4 cm</quantity>
, cylindrical and straight, clavate or slightly bulbous at base, at times also marginately bulbous, fistulose, with an annulus in the upper third, smooth to somewhat fibrillose, gray, grayish purple above the annulus, fibrillose and whitish below annulus, yellowing on handling particularly towards the base, base with a central, not or branched rhizomorph.
<emphasis id="B964933EA31EFFF5F501F8D4FB2AF8D5" bold="true" box="[1149,1250,1852,1877]" pageId="21" pageNumber="240">Annulus</emphasis>
superous, double, white, up to
<quantity id="4CE8E2C9A31EFFF5F068F888FE97F8F9" box="[276,351,1888,1913]" metricMagnitude="-3" metricUnit="m" metricValue="5.0" pageId="21" pageNumber="240" unit="cm" value="0.5">0.5 cm</quantity>
broad, fine, thicker at the margin, pendulous, soon adpressed to the stipe, upper surface smooth or finely striate and the lower surface finely fibrillose-squamulose.
<emphasis id="B964933EA31EFFF5F21FF86CFC0AF81D" bold="true" box="[867,962,1924,1949]" pageId="21" pageNumber="240">Context</emphasis>
slightly dense, scanty at the pileus margin, when cut at first white then light ochre, especially at the stipe apex, with odor of bitter almonds.
</paragraph>
<caption id="DF6F1FA4A31DFFF6F1F4F827FD7FF788" pageId="22" pageNumber="241" startId="22.[136,229,1999,2020]" targetBox="[170,1417,209,1973]" targetPageId="22" targetType="figure">
<paragraph id="8BAF4F2CA31DFFF6F1F4F827FD7FF788" blockId="22.[136,1452,1999,2056]" pageId="22" pageNumber="241">
<emphasis id="B964933EA31DFFF6F1F4F827FF35F864" bold="true" box="[136,253,1999,2020]" pageId="22" pageNumber="241">FIGURE 8.</emphasis>
Macroscopic characters of
<taxonomicName id="4C1034AFA31DFFF6F37EF827FD1AF864" authorityName="L. A. Parra, Angelini &amp; Callac" authorityYear="2018" box="[514,722,1999,2020]" class="Agaricomycetes" family="Agaricaceae" genus="Agaricus" kingdom="Fungi" order="Agaricales" pageId="22" pageNumber="241" phylum="Basidiomycota" rank="species" species="argenteopurpureus">
<emphasis id="B964933EA31DFFF6F37EF827FD1AF864" box="[514,722,1999,2020]" italics="true" pageId="22" pageNumber="241">A. argenteopurpureus</emphasis>
</taxonomicName>
.
<emphasis id="B964933EA31DFFF6F3A1F827FCC4F864" bold="true" box="[733,780,1999,2020]" pageId="22" pageNumber="241">AF.</emphasis>
Basidiomata.AB. (JBSD126500); C, F. (JBSD126501, holotype); D. (JBSD126502); E. (JBSD126503). Photos by C. Angelini.
</paragraph>
</caption>
<caption id="DF6F1FA4A31CFFF7F1F4F883FF3CF848" pageId="23" pageNumber="242" startId="23.[136,229,1899,1920]" targetBox="[151,1436,190,1875]" targetPageId="23" targetType="figure">
<paragraph id="8BAF4F2CA31CFFF7F1F4F883FF3CF848" blockId="23.[136,1452,1899,1992]" pageId="23" pageNumber="242">
<emphasis id="B964933EA31CFFF7F1F4F883FEC8F800" bold="true" box="[136,256,1899,1920]" pageId="23" pageNumber="242">FIGURE 9.</emphasis>
Microscopic characters of
<taxonomicName id="4C1034AFA31CFFF7F36DF883FD2CF800" authorityName="L. A. Parra, Angelini &amp; Callac" authorityYear="2018" box="[529,740,1899,1920]" class="Agaricomycetes" family="Agaricaceae" genus="Agaricus" kingdom="Fungi" order="Agaricales" pageId="23" pageNumber="242" phylum="Basidiomycota" rank="species" species="argenteopurpureus">
<emphasis id="B964933EA31CFFF7F36DF883FD2CF800" box="[529,740,1899,1920]" italics="true" pageId="23" pageNumber="242">A. argenteopurpureus</emphasis>
</taxonomicName>
.
<emphasis id="B964933EA31CFFF7F388F883FCE1F800" bold="true" box="[756,809,1899,1920]" pageId="23" pageNumber="242">AH.</emphasis>
(JBSD126501, holotype) (AG in ammoniacal Congo red; H in water). AC. Cheilocystidia. D. Basidia. E. Spores. F. Hyphae of the lower surface of the annulus. GH. Pileipellis hyphae. Photos by L.A. Parra.
</paragraph>
</caption>
<paragraph id="8BAF4F2CA313FFF8F1C1FF48FC13FDA1" blockId="24.[136,1452,160,1661]" pageId="24" pageNumber="243">
<emphasis id="B964933EA313FFF8F1C1FF48FD8EFF39" bold="true" box="[189,582,160,185]" pageId="24" pageNumber="243">Microscopic description: Spores</emphasis>
4.745.095.67 × 3.193.574 μm, Q=1.271.431.63, ellipsoid, smooth, brown, without apical pore.
<emphasis id="B964933EA313FFF8F0C3FF2CFDD0FF5D" bold="true" box="[447,536,196,221]" pageId="24" pageNumber="243">Basidia</emphasis>
1523(27) × 6.58(12) μm, tetrasporic, clavate or slightly truncated at the apex, sterigmata up to 3 μm long.
<emphasis id="B964933EA313FFF8F0B2FF00FDB0FE81" bold="true" box="[462,632,232,257]" pageId="24" pageNumber="243">Cheilocystidia</emphasis>
abundant, hyaline and smooth, simple or with a basal septum. Terminal elements generally clavate, broadly clavate or pyriform, often also fusiform or rostrate, rarely capitulate, 1027(32) × 615 μm. Anteterminal elements in those septate more or less cylindrical 515 × 3.58 μm.
<emphasis id="B964933EA313FFF8F5AFFED8FAB6FEC9" bold="true" box="[1235,1406,304,329]" pageId="24" pageNumber="243">Pleurocystidia</emphasis>
not observed.
<emphasis id="B964933EA313FFF8F183FEBCFDA3FEED" bold="true" box="[255,619,340,365]" pageId="24" pageNumber="243">Lower surface of the annulus</emphasis>
consisting of cylindrical hyphae, not or slightly narrowed at the septa, some with encrusted parietal pigment, 27 μm wide. Inflated elements not observed.
<emphasis id="B964933EA313FFF8F51BFE90FB12FE11" bold="true" box="[1127,1242,376,401]" pageId="24" pageNumber="243">Pileipellis</emphasis>
a cutis composed of cylindrical hyphae of 310 μm wide, the wider the more constricted at septa. In water, hyphae from the disc with abundant pink diffuse pigment and with punctate granular pigment, in a few elements; outside of the disc hyaline or few elements with well-diffused pink or granular punctate pigment. Terminal elements abundant, cylindrical or attenuated at the apex, which is rounded.
<emphasis id="B964933EA313FFF8F324FDE0FCF4FDA1" bold="true" box="[600,828,520,545]" pageId="24" pageNumber="243">Clamp connections</emphasis>
not observed.
</paragraph>
<paragraph id="8BAF4F2CA313FFF8F1C1FDC4FEE5FDE9" blockId="24.[136,1452,160,1661]" pageId="24" pageNumber="243">
<emphasis id="B964933EA313FFF8F1C1FDC4FE3BFDC5" bold="true" box="[189,499,556,581]" pageId="24" pageNumber="243">Macrochemical reactions:</emphasis>
Schäffers reaction positive, color dark reddish purple. KOH reaction positive, color orange yellow.
</paragraph>
<paragraph id="8BAF4F2CA313FFF8F1C1FD9CFCC8FD31" blockId="24.[136,1452,160,1661]" pageId="24" pageNumber="243">
<emphasis id="B964933EA313FFF8F1C1FD9CFD0BFD0D" bold="true" box="[189,707,628,653]" pageId="24" pageNumber="243">Habit, habitat, occurrence and distribution:</emphasis>
Solitary, rarely in groups of a few basidiomata, in broadleaf forests. Common. Recorded only from
<collectingCountry id="F3070FBCA313FFF8F09BFD70FD44FD31" box="[487,652,664,689]" name="Dominican Republic" pageId="24" pageNumber="243">the Dominican</collectingCountry>
Republic.
</paragraph>
<paragraph id="8BAF4F2CA313FFF8F1C1FD54FDADFD79" blockId="24.[136,1452,160,1661]" pageId="24" pageNumber="243">
<emphasis id="B964933EA313FFF8F1C1FD54FCA2FD55" bold="true" box="[189,874,698,725]" pageId="24" pageNumber="243">
Species-specific ITS markers in
<emphasis id="B964933EA313FFF8F322FD52FDB0FD54" bold="true" box="[606,632,698,724]" italics="true" pageId="24" pageNumber="243">A.</emphasis>
subg.
<emphasis id="B964933EA313FFF8F3AAFD52FCA8FD54" bold="true" box="[726,864,698,724]" italics="true" pageId="24" pageNumber="243">Minoriopsis</emphasis>
:
</emphasis>
cacgcTtgtttggaAttcat@5463, gtgtgCaaact@166, tacccAgtcga@238, and tgaaaAgcatt@544.
</paragraph>
<paragraph id="8BAF4F2CA313FFF8F1C1FCECFE41FC09" blockId="24.[136,1452,160,1661]" pageId="24" pageNumber="243">
<emphasis id="B964933EA313FFF8F1C1FCECFF37FC9D" bold="true" box="[189,255,772,797]" pageId="24" pageNumber="243">Note:</emphasis>
This species is characterized by its medium-small size, its solitary basidiomata, the pileus with gray with silver highlights and dark reddish purple disc, the pileal margin striate and eroded at maturity, the double annulus with thick margin, the quick yellowing reaction on the stipe on handling, the central rhizomorph at the stipe base and the odor of bitter almonds.
</paragraph>
</subSubSection>
<subSubSection id="C30A1CA7A313FFF8F1C1FC7CFE69F9FD" pageId="24" pageNumber="243" type="materials_examined">
<paragraph id="8BAF4F2CA313FFF8F1C1FC7CFE72FB99" blockId="24.[136,1452,160,1661]" pageId="24" pageNumber="243">
<emphasis id="B964933EA313FFF8F1C1FC7CFE6FFC2D" bold="true" box="[189,423,916,941]" pageId="24" pageNumber="243">Material examined:</emphasis>
<materialsCitation id="3B784571A313FFF8F0D1FC7CFED2FC51" collectingDate="2012-12-22" collectionCode="JBSD, LAPAM" country="Dominican Republic" location="Sosua" pageId="24" pageNumber="243" specimenCode="JBSD126500, LAPAM24" specimenCount="1" stateProvince="Puerto Plata">
<emphasis id="B964933EA313FFF8F0D1FC7CFD26FC2D" bold="true" box="[429,750,916,941]" pageId="24" pageNumber="243">
<collectingCountry id="F3070FBCA313FFF8F0D1FC7CFD26FC2D" box="[429,750,916,941]" name="Dominican Republic" pageId="24" pageNumber="243">DOMINICAN REPUBLIC</collectingCountry>
</emphasis>
,
<emphasis id="B964933EA313FFF8F386FC7CFC46FC2D" bold="true" box="[762,910,916,941]" pageId="24" pageNumber="243">
<collectingRegion id="49D481CEA313FFF8F386FC7CFC46FC2D" box="[762,910,916,941]" country="Dominican Republic" name="Puerto Plata" pageId="24" pageNumber="243">Puerto Plata</collectingRegion>
</emphasis>
,
<location id="8ECF19F7A313FFF8F2E7FC7CFC29FC2D" LSID="urn:lsid:plazi:treatment:03B9FE3AA31EFFF8F1F4FB12FE69F9FD:8ECF19F7A313FFF8F2E7FC7CFC29FC2D" box="[923,993,916,941]" country="Dominican Republic" name="Sosua" pageId="24" pageNumber="243" stateProvince="Puerto Plata">Sosúa</location>
, beach,
<date id="FFAE69ECA313FFF8F544FC7CFAC5FC2D" box="[1080,1293,916,941]" pageId="24" pageNumber="243" value="2012-12-22">
<collectingDate id="EFEA9004A313FFF8F544FC7CFAC5FC2D" box="[1080,1293,916,941]" pageId="24" pageNumber="243" value="2012-12-22">22 December 2012</collectingDate>
</date>
,
<specimenCode id="DBB6E757A313FFF8F46AFC7CFA63FC2D" box="[1302,1451,916,941]" 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="24" pageNumber="243" type="Herbarium">JBSD126500</specimenCode>
(
<specimenCode id="DBB6E757A313FFF8F1ECFC50FEDAFC51" box="[144,274,952,977]" collectionCode="LAPAM" pageId="24" pageNumber="243">LAPAM24</specimenCode>
)
</materialsCitation>
;
<materialsCitation id="3B784571A313FFF8F058FC50FA86FC51" box="[292,1358,950,977]" collectingDate="2013-11-25" collectionCode="JBSD, LAPAM" country="Dominican Republic" location="Sosua" pageId="24" pageNumber="243" specimenCode="JBSD126501, LAPAM28" specimenCount="2" stateProvince="Puerto Plata" typeStatus="holotype">
<emphasis id="B964933EA313FFF8F058FC50FE71FC51" bold="true" box="[292,441,952,977]" pageId="24" pageNumber="243">
<collectingRegion id="49D481CEA313FFF8F058FC50FE71FC51" box="[292,441,952,977]" country="Dominican Republic" name="Puerto Plata" pageId="24" pageNumber="243">Puerto Plata</collectingRegion>
</emphasis>
,
<location id="8ECF19F7A313FFF8F0BAFC50FDC4FC51" LSID="urn:lsid:plazi:treatment:03B9FE3AA31EFFF8F1F4FB12FE69F9FD:8ECF19F7A313FFF8F0BAFC50FDC4FC51" box="[454,524,952,977]" country="Dominican Republic" name="Sosua" pageId="24" pageNumber="243" stateProvince="Puerto Plata">Sosúa</location>
, beach,
<date id="FFAE69ECA313FFF8F318FC50FCF2FC51" box="[612,826,952,977]" pageId="24" pageNumber="243" value="2013-11-25">
<collectingDate id="EFEA9004A313FFF8F318FC50FCF2FC51" box="[612,826,952,977]" pageId="24" pageNumber="243" value="2013-11-25">25 November 2013</collectingDate>
</date>
<specimenCode id="DBB6E757A313FFF8F23CFC50FC1EFC51" box="[832,982,952,977]" 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="24" pageNumber="243" type="Herbarium">JBSD126501</specimenCode>
<emphasis id="B964933EA313FFF8F2A0FC5EFB9AFC51" bold="true" box="[988,1106,950,977]" italics="true" pageId="24" pageNumber="243">
<typeStatus id="54ABF18EA313FFF8F2A0FC5EFB9AFC51" box="[988,1106,950,977]" pageId="24" pageNumber="243" type="holotype">Holotypus</typeStatus>
</emphasis>
(
<specimenCode id="DBB6E757A313FFF8F523FC50FB15FC51" box="[1119,1245,952,977]" collectionCode="LAPAM" pageId="24" pageNumber="243">LAPAM28</specimenCode>
<taxonomicName id="4C1034AFA313FFF8F59FFC5FFA8BFC51" box="[1251,1347,951,977]" class="Magnoliopsida" family="Asteraceae" genus="Isotypus" kingdom="Plantae" order="Asterales" pageId="24" pageNumber="243" phylum="Tracheophyta" rank="genus">
<emphasis id="B964933EA313FFF8F59FFC5FFA8BFC51" bold="true" box="[1251,1347,951,977]" italics="true" pageId="24" pageNumber="243">
<typeStatus id="54ABF18EA313FFF8F59FFC5FFA8BFC51" box="[1251,1347,951,977]" pageId="24" pageNumber="243" type="isotype">Isotypus</typeStatus>
</emphasis>
</taxonomicName>
)
</materialsCitation>
;
<materialsCitation id="3B784571A313FFF8F426FC50FC4BFC75" collectingDate="2014-11-27" collectionCode="JBSD, LAPAM" country="Dominican Republic" location="Sosua" pageId="24" pageNumber="243" specimenCode="JBSD126502, LAPAM53" specimenCount="1" stateProvince="Puerto Plata" typeStatus="holotype">
<emphasis id="B964933EA313FFF8F426FC50FF0EFC75" bold="true" pageId="24" pageNumber="243">
<collectingRegion id="49D481CEA313FFF8F426FC50FF0EFC75" country="Dominican Republic" name="Puerto Plata" pageId="24" pageNumber="243">Puerto Plata</collectingRegion>
</emphasis>
,
<location id="8ECF19F7A313FFF8F1AFFC34FED1FC75" LSID="urn:lsid:plazi:treatment:03B9FE3AA31EFFF8F1F4FB12FE69F9FD:8ECF19F7A313FFF8F1AFFC34FED1FC75" box="[211,281,988,1013]" country="Dominican Republic" name="Sosua" pageId="24" pageNumber="243" stateProvince="Puerto Plata">Sosúa</location>
, beach,
<date id="FFAE69ECA313FFF8F00EFC34FD83FC75" box="[370,587,988,1013]" pageId="24" pageNumber="243" value="2014-11-27">
<collectingDate id="EFEA9004A313FFF8F00EFC34FD83FC75" box="[370,587,988,1013]" pageId="24" pageNumber="243" value="2014-11-27">27 November 2014</collectingDate>
</date>
,
<specimenCode id="DBB6E757A313FFF8F329FC34FD23FC75" box="[597,747,988,1013]" 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="24" pageNumber="243" type="Herbarium">JBSD126502</specimenCode>
(
<specimenCode id="DBB6E757A313FFF8F385FC34FCB3FC75" box="[761,891,988,1013]" collectionCode="LAPAM" pageId="24" pageNumber="243">LAPAM53</specimenCode>
)
</materialsCitation>
;
<materialsCitation id="3B784571A313FFF8F2F1FC34FE7FFB99" collectingDate="2014-11-28" collectionCode="JBSD, LAPAM" country="Dominican Republic" location="Sosua" pageId="24" pageNumber="243" specimenCode="JBSD126503, LAPAM55" specimenCount="1" stateProvince="Puerto Plata" typeStatus="holotype">
<emphasis id="B964933EA313FFF8F2F1FC34FBEAFC75" bold="true" box="[909,1058,988,1013]" pageId="24" pageNumber="243">
<collectingRegion id="49D481CEA313FFF8F2F1FC34FBEAFC75" box="[909,1058,988,1013]" country="Dominican Republic" name="Puerto Plata" pageId="24" pageNumber="243">Puerto Plata</collectingRegion>
</emphasis>
,
<location id="8ECF19F7A313FFF8F553FC34FBBDFC75" LSID="urn:lsid:plazi:treatment:03B9FE3AA31EFFF8F1F4FB12FE69F9FD:8ECF19F7A313FFF8F553FC34FBBDFC75" box="[1071,1141,988,1013]" country="Dominican Republic" name="Sosua" pageId="24" pageNumber="243" stateProvince="Puerto Plata">Sosúa</location>
, beach,
<date id="FFAE69ECA313FFF8F5B2FC34FA6FFC75" box="[1230,1447,988,1013]" pageId="24" pageNumber="243" value="2014-11-28">
<collectingDate id="EFEA9004A313FFF8F5B2FC34FA6FFC75" box="[1230,1447,988,1013]" pageId="24" pageNumber="243" value="2014-11-28">28 November 2014</collectingDate>
</date>
,
<specimenCode id="DBB6E757A313FFF8F1F4FBE8FED6FB99" box="[136,286,1024,1049]" 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="24" pageNumber="243" type="Herbarium">JBSD126503</specimenCode>
(
<specimenCode id="DBB6E757A313FFF8F050FBE8FE67FB99" box="[300,431,1024,1049]" collectionCode="LAPAM" pageId="24" pageNumber="243">LAPAM55</specimenCode>
)
</materialsCitation>
.
</paragraph>
<paragraph id="8BAF4F2CA313FFF8F1C1FBCCFEF3FB29" blockId="24.[136,1452,160,1661]" pageId="24" pageNumber="243">
<emphasis id="B964933EA313FFF8F1C1FBCCFE04FBBD" bold="true" box="[189,460,1060,1085]" pageId="24" pageNumber="243">Taxonomic comments:</emphasis>
This species is highly similar to
<taxonomicName id="4C1034AFA313FFF8F239FBCCFC35FBBD" box="[837,1021,1060,1085]" class="Agaricomycetes" family="Agaricaceae" genus="Agaricus" kingdom="Fungi" order="Agaricales" pageId="24" pageNumber="243" phylum="Basidiomycota" rank="species" species="martinicensis">
<emphasis id="B964933EA313FFF8F239FBCCFC35FBBD" box="[837,1021,1060,1085]" italics="true" pageId="24" pageNumber="243">A. martinicensis</emphasis>
</taxonomicName>
, from which it differs in smaller size, a pileus surface that is usually more grayish silver toward the margin and more frequently striate, and smaller spores, although an unambiguous identification would require the use of molecular characters to unequivocally differentiate the two species.
</paragraph>
<paragraph id="8BAF4F2CA313FFF8F1C1FB5CFCACFA49" blockId="24.[136,1452,160,1661]" pageId="24" pageNumber="243">
This species is also macroscopically similar to many species of
<emphasis id="B964933EA313FFF8F2FCFB5CFC50FB4D" box="[896,920,1204,1229]" italics="true" pageId="24" pageNumber="243">
<collectionCode id="ED01D7E9A313FFF8F2FCFB5CFC5CFB4D" box="[896,916,1204,1229]" country="USA" lsid="urn:lsid:biocol.org:col:15406" name="Harvard University - Arnold Arboretum" pageId="24" pageNumber="243" type="Herbarium">A</collectionCode>
.
</emphasis>
subg.
<taxonomicName id="4C1034AFA313FFF8F29CFB5CFBF4FB4D" box="[992,1084,1204,1229]" pageId="24" pageNumber="269" rank="section" section="Minores">
<emphasis id="B964933EA313FFF8F29CFB5CFBF4FB4D" box="[992,1084,1204,1229]" italics="true" pageId="24" pageNumber="243">Minores</emphasis>
</taxonomicName>
in the pileus completely covered by reddish purple squamules, but it is distinguished by its membranous double annulus that is thicker at the margin with the lower surface fibrillose-squamulose and its dark reddish purple Schäffers reaction in dried material, instead of a simple annulus that is fragile and ephemeral and the weak reddish pink Schäffers reaction in dried material of
<emphasis id="B964933EA313FFF8F42DFAC8FAA2FAB9" box="[1361,1386,1312,1337]" italics="true" pageId="24" pageNumber="243">
<collectionCode id="ED01D7E9A313FFF8F42DFAC8FAADFAB9" box="[1361,1381,1312,1337]" country="USA" lsid="urn:lsid:biocol.org:col:15406" name="Harvard University - Arnold Arboretum" pageId="24" pageNumber="243" type="Herbarium">A</collectionCode>
.
</emphasis>
subg.
<taxonomicName id="4C1034AFA313FFF8F1F4FAACFF2CFADD" box="[136,228,1348,1373]" pageId="24" pageNumber="269" rank="section" section="Minores">
<emphasis id="B964933EA313FFF8F1F4FAACFF2CFADD" box="[136,228,1348,1373]" italics="true" pageId="24" pageNumber="243">Minores</emphasis>
</taxonomicName>
. Within
<emphasis id="B964933EA313FFF8F03AFAACFE97FADD" box="[326,351,1348,1373]" italics="true" pageId="24" pageNumber="243">
<collectionCode id="ED01D7E9A313FFF8F03AFAACFE92FADD" box="[326,346,1348,1373]" country="USA" lsid="urn:lsid:biocol.org:col:15406" name="Harvard University - Arnold Arboretum" pageId="24" pageNumber="243" type="Herbarium">A</collectionCode>
.
</emphasis>
sect.
<emphasis id="B964933EA313FFF8F0E3FAACFDF3FADD" box="[415,571,1348,1373]" italics="true" pageId="24" pageNumber="243">Pantropicales</emphasis>
,
<taxonomicName id="4C1034AFA313FFF8F336FAACFC43FADD" authorityName="L. A. Parra, Angelini &amp; Callac" authorityYear="2018" box="[586,907,1348,1373]" class="Agaricomycetes" family="Agaricaceae" genus="Agaricus" kingdom="Fungi" order="Agaricales" pageId="24" pageNumber="243" phylum="Basidiomycota" rank="species" species="argenteopurpureus">
<emphasis id="B964933EA313FFF8F336FAACFC43FADD" box="[586,907,1348,1373]" italics="true" pageId="24" pageNumber="243">Agaricus argenteopurpureus</emphasis>
</taxonomicName>
, at times, strongly resembles to
<taxonomicName id="4C1034AFA313FFF8F58BFAACFA6CFADD" box="[1271,1444,1348,1373]" class="Agaricomycetes" family="Agaricaceae" genus="Agaricus" kingdom="Fungi" order="Agaricales" pageId="24" pageNumber="243" phylum="Basidiomycota" rank="species" species="porphyropos">
<emphasis id="B964933EA313FFF8F58BFAACFA6CFADD" box="[1271,1444,1348,1373]" italics="true" pageId="24" pageNumber="243">A. porphyropos</emphasis>
</taxonomicName>
, but the former has a pileus with silvery or greyish highlights which is reddish purple on a white background in all studied collections of
<taxonomicName id="4C1034AFA313FFF8F003FA64FDE4FA25" box="[383,556,1420,1445]" class="Agaricomycetes" family="Agaricaceae" genus="Agaricus" kingdom="Fungi" order="Agaricales" pageId="24" pageNumber="243" phylum="Basidiomycota" rank="species" species="porphyropos">
<emphasis id="B964933EA313FFF8F003FA64FDE4FA25" box="[383,556,1420,1445]" italics="true" pageId="24" pageNumber="243">A. porphyropos</emphasis>
</taxonomicName>
. However, we must be cautious when using these characters to separate the two taxa since we do not well know the variability in
<taxonomicName id="4C1034AFA313FFF8F3CCFA58FC95FA49" box="[688,861,1456,1481]" class="Agaricomycetes" family="Agaricaceae" genus="Agaricus" kingdom="Fungi" order="Agaricales" pageId="24" pageNumber="243" phylum="Basidiomycota" rank="species" species="porphyropos">
<emphasis id="B964933EA313FFF8F3CCFA58FC95FA49" box="[688,861,1456,1481]" italics="true" pageId="24" pageNumber="243">A. porphyropos</emphasis>
</taxonomicName>
.
</paragraph>
<paragraph id="8BAF4F2CA313FFF8F1C1FA3CFE69F9FD" blockId="24.[136,1452,160,1661]" pageId="24" pageNumber="243">
<taxonomicName id="4C1034AFA313FFF8F1C1FA3CFE36FA6D" authorityName="L. A. Parra, Angelini &amp; Callac" authorityYear="2018" box="[189,510,1492,1517]" class="Agaricomycetes" family="Agaricaceae" genus="Agaricus" kingdom="Fungi" order="Agaricales" pageId="24" pageNumber="243" phylum="Basidiomycota" rank="species" species="argenteopurpureus">
<emphasis id="B964933EA313FFF8F1C1FA3CFE36FA6D" box="[189,510,1492,1517]" italics="true" pageId="24" pageNumber="243">Agaricus argenteopurpureus</emphasis>
</taxonomicName>
also resembles macroscopically
<taxonomicName id="4C1034AFA313FFF8F217FA3CFB03FA6D" authority="Heinem (1961: 245)" authorityName="Heinem" authorityPageNumber="245" authorityYear="1961" box="[875,1227,1492,1517]" class="Agaricomycetes" family="Agaricaceae" genus="Agaricus" kingdom="Fungi" order="Agaricales" pageId="24" pageNumber="243" phylum="Basidiomycota" rank="species" species="dennisii">
<emphasis id="B964933EA313FFF8F217FA3CFC2AFA6D" box="[875,994,1492,1517]" italics="true" pageId="24" pageNumber="243">A. dennisii</emphasis>
Heinem (1961: 245)
</taxonomicName>
, a species placed by this author in
<emphasis id="B964933EA313FFF8F063FA10FEF8F991" box="[287,304,1528,1553]" italics="true" pageId="24" pageNumber="243">
<collectionCode id="ED01D7E9A313FFF8F063FA10FEF8F991" box="[287,304,1528,1553]" country="USA" lsid="urn:lsid:biocol.org:col:15406" name="Harvard University - Arnold Arboretum" pageId="24" pageNumber="243" type="Herbarium">A</collectionCode>
</emphasis>
. subg.
<emphasis id="B964933EA313FFF8F002FA10FDECF991" box="[382,548,1528,1553]" italics="true" pageId="24" pageNumber="243">Conioagaricus</emphasis>
Heinem. (1956: 101). Their pilei have the same color and, in mature basidiomata, the same strongly striate margin, which exudes reddish drops. However,
<taxonomicName id="4C1034AFA313FFF8F2CAF9F4FBE6F9B5" authorityName="Heinem" authorityYear="1961" box="[950,1070,1564,1589]" class="Agaricomycetes" family="Agaricaceae" genus="Agaricus" kingdom="Fungi" order="Agaricales" pageId="24" pageNumber="243" phylum="Basidiomycota" rank="species" species="dennisii">
<emphasis id="B964933EA313FFF8F2CAF9F4FBE6F9B5" box="[950,1070,1564,1589]" italics="true" pageId="24" pageNumber="243">A. dennisii</emphasis>
</taxonomicName>
lacks an anise odor, its Schäffers reaction is negative, it lacks cheilocystidia and its spores are much smaller with dimensions not overlapping with those of
<taxonomicName id="4C1034AFA313FFF8F1DAF98CFE52F9FD" authorityName="L. A. Parra, Angelini &amp; Callac" authorityYear="2018" box="[166,410,1636,1661]" class="Agaricomycetes" family="Agaricaceae" genus="Agaricus" kingdom="Fungi" order="Agaricales" pageId="24" pageNumber="243" phylum="Basidiomycota" rank="species" species="argenteopurpureus">
<emphasis id="B964933EA313FFF8F1DAF98CFE52F9FD" box="[166,410,1636,1661]" italics="true" pageId="24" pageNumber="243">A. argenteopurpureus</emphasis>
</taxonomicName>
.
</paragraph>
</subSubSection>
</treatment>
</document>