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<document ID-DOI="http://dx.doi.org/10.3897/phytokeys.184.69970" ID-GBIF-Dataset="23757c18-13d9-4ffa-a274-7f7139437780" ID-PMC="PMC8589775" ID-Pensoft-Pub="1314-2003-184-127" ID-Pensoft-UUID="3E2CC45E650851B9A94168A36AB8B7BA" ID-PubMed="34785976" ModsDocID="1314-2003-184-127" checkinTime="1636108726664" checkinUser="pensoft" docAuthor="Wolski, Grzegorz J., Nowicka-Krawczyk, Paulina &amp; Buck, William R." docDate="2021" docId="0B2FCA3578CC506989408E063D999603" docLanguage="en" docName="PhytoKeys 184: 127-138" docOrigin="PhytoKeys 184" docPubDate="2021-11-05" docSource="http://dx.doi.org/10.3897/phytokeys.184.69970" docTitle="Plagiothecium schofieldii G. J. Wolski &amp; W. R. Buck 2021, sp. nov." docType="treatment" docVersion="4" id="3E2CC45E650851B9A94168A36AB8B7BA" lastPageNumber="127" masterDocId="3E2CC45E650851B9A94168A36AB8B7BA" masterDocTitle="Plagiothecium schofieldii, a new species from the Aleutian Islands (Alaska, USA)" masterLastPageNumber="138" masterPageNumber="127" pageNumber="127" updateTime="1668140488162" updateUser="ExternalLinkService">
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo>
<mods:title>Plagiothecium schofieldii, a new species from the Aleutian Islands (Alaska, USA)</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Wolski, Grzegorz J.</mods:namePart>
<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0003-1480-8003</mods:nameIdentifier>
<mods:affiliation>Department of Geobotany and Plant Ecology, Faculty of Biology and Environmental Protection, University of Lodz, ul. Banacha 12 / 16, 90 - 237 Lodz, Poland</mods:affiliation>
<mods:nameIdentifier type="email">grzegorz.wolski@biol.uni.lodz.pl</mods:nameIdentifier>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Nowicka-Krawczyk, Paulina</mods:namePart>
<mods:affiliation>Department of Algology and Mycology, Faculty of Biology and Environmental Protection, University of Lodz, ul. Banacha 12 / 16, 90 - 237 Lodz, Poland</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Buck, William R.</mods:namePart>
<mods:affiliation>Institute of Systematic Botany, The New York Botanical Garden, Bronx, NY 10458 - 5126, USA</mods:affiliation>
</mods:name>
<mods:typeOfResource>text</mods:typeOfResource>
<mods:relatedItem type="host">
<mods:titleInfo>
<mods:title>PhytoKeys</mods:title>
</mods:titleInfo>
<mods:part>
<mods:date>2021</mods:date>
<mods:detail type="pubDate">
<mods:number>2021-11-05</mods:number>
</mods:detail>
<mods:detail type="volume">
<mods:number>184</mods:number>
</mods:detail>
<mods:extent unit="page">
<mods:start>127</mods:start>
<mods:end>138</mods:end>
</mods:extent>
</mods:part>
</mods:relatedItem>
<mods:location>
<mods:url>http://dx.doi.org/10.3897/phytokeys.184.69970</mods:url>
</mods:location>
<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">http://dx.doi.org/10.3897/phytokeys.184.69970</mods:identifier>
<mods:identifier type="Pensoft-Pub">1314-2003-184-127</mods:identifier>
<mods:identifier type="Pensoft-UUID">3E2CC45E650851B9A94168A36AB8B7BA</mods:identifier>
</mods:mods>
<treatment ID-GBIF-Taxon="189997870" LSID="urn:lsid:plazi:treatment:0B2FCA3578CC506989408E063D999603" httpUri="http://treatment.plazi.org/id/0B2FCA3578CC506989408E063D999603" lastPageNumber="127" pageId="0" pageNumber="127">
<subSubSection pageId="0" pageNumber="127" type="nomenclature">
<paragraph pageId="0" pageNumber="127">
<taxonomicName LSID="0B2FCA35-78CC-5069-8940-8E063D999603" authority="G. J. Wolski &amp; W. R. Buck" authorityName="G. J. Wolski &amp; W. R. Buck" authorityYear="2021" class="Bryopsida" family="Plagiotheciaceae" genus="Plagiothecium" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Plagiothecium schofieldii" order="Hypnales" pageId="0" pageNumber="127" phylum="Bryophyta" rank="species" species="schofieldii" status="sp. nov.">Plagiothecium schofieldii G.J.Wolski &amp; W.R.Buck</taxonomicName>
<taxonomicNameLabel pageId="0" pageNumber="127">sp. nov.</taxonomicNameLabel>
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="127" type="materials_examined">
<paragraph pageId="0" pageNumber="127">
<typeStatus>Type</typeStatus>
.
</paragraph>
<paragraph pageId="0" pageNumber="127">
<materialsCitation collectingDate="1996-07-19" collectorName="W. B. Schofield, Holotype MO" country="U. S. A." county="Shumagin Islands" latitude="54.916668" location="Hill" longLatPrecision="1067" longitude="-159.25" municipality="Simeonof Island" specimenCount="1" stateProvince="Alaska" typeStatus="Holotype">
<collectingCountry name="United States of America">U.S.A.</collectingCountry>
<collectingRegion country="United States of America" name="Alaska">Alaska</collectingRegion>
,
<collectingCounty>Shumagin Islands</collectingCounty>
,
<collectingMunicipality>Simeonof Island</collectingMunicipality>
, mainly near saddle between
<location LSID="urn:lsid:plazi:treatment:0B2FCA3578CC506989408E063D999603:385DF851EABC69C18593CAE99BDE6B84" country="U. S. A." county="Shumagin Islands" latitude="54.916668" longLatPrecision="1067" longitude="-159.25" municipality="Simeonof Island" name="Hill" stateProvince="Alaska">Hill</location>
1436 and 1265, wet cliff chimney,
<geoCoordinate degrees="54" direction="north" minutes="55" orientation="latitude" precision="925" value="54.916668">54°55'N</geoCoordinate>
,
<geoCoordinate degrees="159" direction="west" minutes="15" orientation="longitude" precision="925" value="-159.25">159°15'W</geoCoordinate>
,
<collectingDate value="1996-07-19">19 July 1996</collectingDate>
,
<emphasis italics="true" pageId="0" pageNumber="127">
<collectorName>W.B. Schofield</collectorName>
106119
</emphasis>
,
<collectorName>
<typeStatus>Holotype</typeStatus>
MO
</collectorName>
5135779
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="127" type="description">
<paragraph pageId="0" pageNumber="127">Description.</paragraph>
<paragraph pageId="0" pageNumber="127">
Plants small, light green to yellow, with a delicate metallic luster, forming very dense, often homogeneous mats. Stems erect, 1.5-3.0 cm long (Fig.
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Stems with the sporophytes of Plagiothecium schofieldii. Part of the turf of holotype (W. B. Schofield 106119, MO 5135779). Scale bar: 1 cm." figureDoi="10.3897/phytokeys.184.69970.figure3" httpUri="https://binary.pensoft.net/fig/607370" pageId="0" pageNumber="127">3</figureCitation>
), in cross-section rounded, with a diameter of 300-380
<normalizedToken originalValue="μm">μm</normalizedToken>
, the central strand developed, epidermal cells 10-25
<normalizedToken originalValue="×">x</normalizedToken>
6-12
<normalizedToken originalValue="μm">μm</normalizedToken>
, the parenchyma thin-walled, 20-40
<normalizedToken originalValue="×">x</normalizedToken>
15-32
<normalizedToken originalValue="μm">μm</normalizedToken>
; leaves julaceous, imbricate, very closely arranged on the stem, when dry not shrunken, very concave, therefore very often damaged under the microscope, symmetrical, ovate to elliptic, those from the middle of the stem 1.4-3.0 mm long, and the width measured at the widest point 0.9-1.9 mm; the apex obtuse and apiculate, often denticulate; costae two, thick and strong, extending usually to
<normalizedToken originalValue="½">1/2</normalizedToken>
of the leaf length, reaching 0.5-2.0 mm; laminal cells linear, rather symmetrical, in quite regular transverse rows, the length and width very variable but dependent on location: 66-178
<normalizedToken originalValue="×">x</normalizedToken>
14-33
<normalizedToken originalValue="μm">μm</normalizedToken>
at apex, 88-190
<normalizedToken originalValue="×">x</normalizedToken>
13-29
<normalizedToken originalValue="μm">μm</normalizedToken>
at midleaf, and 45-221
<normalizedToken originalValue="×">x</normalizedToken>
20-39
<normalizedToken originalValue="μm">μm</normalizedToken>
toward insertion, due to the very wide cells, cell areolation clearly loose; decurrencies of 4-5 rows of rounded, rounded-rectangular, inflated cells, 40-90
<normalizedToken originalValue="×">x</normalizedToken>
22-48
<normalizedToken originalValue="μm">μm</normalizedToken>
, forming distinct, quite long auricles, 300-750
<normalizedToken originalValue="μm">μm</normalizedToken>
long (Fig.
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. The most important taxonomic features of Plagiothecium schofieldii. Dimensions of cells from the apex A the middle B and basal part of the leaf C leaves D-E leaf apex F auricles G. Scale bar: 100 µm (A-C, F-G); 500 µm (D-E). Photos from the holotype (W. B. Schofield 106119, MO 5135779)." figureDoi="10.3897/phytokeys.184.69970.figure4" httpUri="https://binary.pensoft.net/fig/607371" pageId="0" pageNumber="127">4</figureCitation>
). Autoicous. Sporophytes abundant; setae dark brown at base, yellowish-orange at apex, twisted when dry, 1.8-2.3 cm long; the capsules more or less erect, 700-950
<normalizedToken originalValue="×">x</normalizedToken>
280-350
<normalizedToken originalValue="μm">μm</normalizedToken>
; operculum short and rostellate; peristome double, well developed, 450-500
<normalizedToken originalValue="μm">μm</normalizedToken>
long; exostome teeth trabeculate at the ventral side.
</paragraph>
<caption doi="10.3897/phytokeys.184.69970.figure3" httpUri="https://binary.pensoft.net/fig/607370" pageId="0" pageNumber="127" start="Figure 3" startId="F3">
<paragraph pageId="0" pageNumber="127">
<emphasis bold="true" pageId="0" pageNumber="127">Figure 3.</emphasis>
Stems with the sporophytes of
<taxonomicName authorityName="G. J. Wolski &amp; W. R. Buck" authorityYear="2021" class="Bryopsida" family="Plagiotheciaceae" genus="Plagiothecium" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Plagiothecium schofieldii" order="Hypnales" pageId="0" pageNumber="127" phylum="Bryophyta" rank="species" species="schofieldii">
<emphasis italics="true" pageId="0" pageNumber="127">Plagiothecium schofieldii</emphasis>
</taxonomicName>
. Part of the turf of holotype (
<emphasis italics="true" pageId="0" pageNumber="127">W.B. Schofield 106119</emphasis>
, MO5135779). Scale bar: 1 cm.
</paragraph>
</caption>
<caption doi="10.3897/phytokeys.184.69970.figure4" httpUri="https://binary.pensoft.net/fig/607371" pageId="0" pageNumber="127" start="Figure 4" startId="F4">
<paragraph pageId="0" pageNumber="127">
<emphasis bold="true" pageId="0" pageNumber="127">Figure 4.</emphasis>
The most important taxonomic features of
<taxonomicName authorityName="G. J. Wolski &amp; W. R. Buck" authorityYear="2021" class="Bryopsida" family="Plagiotheciaceae" genus="Plagiothecium" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Plagiothecium schofieldii" order="Hypnales" pageId="0" pageNumber="127" phylum="Bryophyta" rank="species" species="schofieldii">
<emphasis italics="true" pageId="0" pageNumber="127">Plagiothecium schofieldii</emphasis>
</taxonomicName>
. Dimensions of cells from the apex
<emphasis bold="true" pageId="0" pageNumber="127">A</emphasis>
the middle
<emphasis bold="true" pageId="0" pageNumber="127">B</emphasis>
and basal part of the leaf
<emphasis bold="true" pageId="0" pageNumber="127">C</emphasis>
leaves
<emphasis bold="true" pageId="0" pageNumber="127">D-E</emphasis>
leaf apex
<emphasis bold="true" pageId="0" pageNumber="127">F</emphasis>
auricles
<emphasis bold="true" pageId="0" pageNumber="127">G</emphasis>
. Scale bar: 100
<normalizedToken originalValue="µm">µm</normalizedToken>
(
<emphasis bold="true" pageId="0" pageNumber="127">A-C, F-G</emphasis>
); 500
<normalizedToken originalValue="µm">µm</normalizedToken>
(
<emphasis bold="true" pageId="0" pageNumber="127">D-E</emphasis>
). Photos from the holotype (
<emphasis italics="true" pageId="0" pageNumber="127">W.B. Schofield 106119</emphasis>
, MO5135779).
</paragraph>
</caption>
</subSubSection>
<subSubSection pageId="0" pageNumber="127" type="etymology">
<paragraph pageId="0" pageNumber="127">Etymology.</paragraph>
<paragraph pageId="0" pageNumber="127">
The present species is named in honor of Wilfred
<normalizedToken originalValue="“Wilf”">&quot;Wilf&quot;</normalizedToken>
Borden Schofield (1927-2008), who spent decades studying northern regions of North America, including the Aleutian Islands, and who on July 19, 1996, collected the specimen (No.
<emphasis italics="true" pageId="0" pageNumber="127">106119</emphasis>
), chosen here as the holotype of
<taxonomicName authorityName="G. J. Wolski &amp; W. R. Buck" authorityYear="2021" class="Bryopsida" family="Plagiotheciaceae" genus="Plagiothecium" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Plagiothecium schofieldii" order="Hypnales" pageId="0" pageNumber="127" phylum="Bryophyta" rank="species" species="schofieldii">
<emphasis italics="true" pageId="0" pageNumber="127">Plagiothecium schofieldii</emphasis>
</taxonomicName>
. According to Stephen Talbot (pers. comm.), Schofield recognized this plant as distinct in the field.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="127" type="distribution">
<paragraph pageId="0" pageNumber="127">Distribution and ecology.</paragraph>
<paragraph pageId="0" pageNumber="127">
<taxonomicName authorityName="G. J. Wolski &amp; W. R. Buck" authorityYear="2021" class="Bryopsida" family="Plagiotheciaceae" genus="Plagiothecium" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Plagiothecium schofieldii" order="Hypnales" pageId="0" pageNumber="127" phylum="Bryophyta" rank="species" species="schofieldii">
<emphasis italics="true" pageId="0" pageNumber="127">Plagiothecium schofieldii</emphasis>
</taxonomicName>
so far has only been recorded from Adak Island, Attu Island and Simeonof Island in Alaska. In this area it has been recorded on wetlands and hills, wet cliff chimney, open, moist crevice of a cliff, shaded face of hole on slope, shaded humid outcrop, along creek and adjacent slope, near saddle between hills and near base of mountain.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="127" type="materials_examined">
<paragraph pageId="0" pageNumber="127">Additional specimens examined.</paragraph>
<paragraph pageId="0" pageNumber="127">
<materialsCitation collectingDate="1975-06-15" collectingDateMax="2000-08-10" collectingDateMin="1975-06-15" collectorName="D. K. Smith, W. B. Schofield, S. S. Talbot, G. Argus" country="U. S. A." county="Adak Island" latitude="54.916668" location="Attu Island" longLatPrecision="1067" longitude="-159.25" municipality="Finger Bay" specimenCount="1" stateProvince="Alaska">
<collectingCountry name="United States of America">U.S.A.</collectingCountry>
<collectingRegion country="United States of America" name="Alaska">Alaska</collectingRegion>
:
<collectingCounty>Adak Island</collectingCounty>
,
<collectingMunicipality>Finger Bay</collectingMunicipality>
, along creek and adjacent slope, open, moist, crevice of cliff,
<collectingDate value="1975-06-15" valueMax="1975-06-30" valueMin="1975-06-15">15-30 Jun 1975</collectingDate>
,
<emphasis italics="true" pageId="0" pageNumber="127">
<collectorName>D. K. Smith</collectorName>
3864
</emphasis>
(NY02589541);
<location LSID="urn:lsid:plazi:treatment:0B2FCA3578CC506989408E063D999603:B16D573848F0EA1EA100827A97B2F17E" country="U. S. A." county="Adak Island" latitude="54.916668" longLatPrecision="1067" longitude="-159.25" municipality="Finger Bay" name="Attu Island" stateProvince="Alaska">Attu Island</location>
, near
<location LSID="urn:lsid:plazi:treatment:0B2FCA3578CC506989408E063D999603:6D7C4F46EBF4676F7F05B054B8692EA4" country="U. S. A." county="Adak Island" latitude="54.916668" longLatPrecision="1067" longitude="-159.25" municipality="Finger Bay" name="Jaemin Pass" stateProvince="Alaska">Jaemin Pass</location>
, slopes of
<location LSID="urn:lsid:plazi:treatment:0B2FCA3578CC506989408E063D999603:C4AA9A43C7675D756168EF897BB3A4FE" country="U. S. A." county="Adak Island" latitude="54.916668" longLatPrecision="1067" longitude="-159.25" municipality="Finger Bay" name="Ribson Ridge" stateProvince="Alaska">Ribson Ridge</location>
, shaded face of hole on slope,
<geoCoordinate degrees="52" direction="north" minutes="53" orientation="latitude" precision="925" value="52.883335">52°53'N</geoCoordinate>
,
<geoCoordinate degrees="173" direction="west" minutes="10" orientation="longitude" precision="925" value="-173.16667">173°10' W</geoCoordinate>
,
<collectingDate value="2000-08-10">10 Aug 2000</collectingDate>
,
<emphasis italics="true" pageId="0" pageNumber="127">
<collectorName>W. B. Schofield</collectorName>
</emphasis>
&amp;
<emphasis italics="true" pageId="0" pageNumber="127">
<collectorName>S. S. Talbot</collectorName>
115646
</emphasis>
, UBC ACC# B185126;
<location LSID="urn:lsid:plazi:treatment:0B2FCA3578CC506989408E063D999603:1CC60A38FCCBD0BB77889E91932E2EA1" country="U. S. A." county="Adak Island" latitude="54.916668" longLatPrecision="1067" longitude="-159.25" municipality="Finger Bay" name="Shumagin Islands" stateProvince="Alaska">Shumagin Islands</location>
,
<location LSID="urn:lsid:plazi:treatment:0B2FCA3578CC506989408E063D999603:D53248891363184770EC52620343D8A4" country="U. S. A." county="Adak Island" latitude="54.916668" longLatPrecision="1067" longitude="-159.25" municipality="Finger Bay" name="Simeonof Islands" stateProvince="Alaska">Simeonof Islands</location>
, near base of larger mountain, N. side,
<geoCoordinate degrees="54" direction="north" minutes="55" orientation="latitude" precision="925" value="54.916668">54°55'N</geoCoordinate>
,
<geoCoordinate degrees="159" direction="west" minutes="15" orientation="longitude" precision="925" value="-159.25">159°15' W</geoCoordinate>
, shaded humid outcrop,
<collectingDate value="1995-07-17">17 Jul 1995</collectingDate>
,
<emphasis italics="true" pageId="0" pageNumber="127">
<collectorName>W. B. Schofield</collectorName>
</emphasis>
,
<emphasis italics="true" pageId="0" pageNumber="127">
<collectorName>S. S. Talbot</collectorName>
</emphasis>
&amp;
<emphasis italics="true" pageId="0" pageNumber="127">
<collectorName>G. Argus</collectorName>
104056
</emphasis>
, ACC# B159650 (MO5140205); wetlands and Hill 624,
<geoCoordinate degrees="54" direction="north" minutes="55" orientation="latitude" precision="925" value="54.916668">54°55'N</geoCoordinate>
,
<geoCoordinate degrees="159" direction="west" minutes="15" orientation="longitude" precision="925" value="-159.25">159°15'W</geoCoordinate>
, seepy cliff chimney,
<collectingDate value="1996-07-07">7 Jul 1996</collectingDate>
,
<emphasis italics="true" pageId="0" pageNumber="127">
<collectorName>W. B. Schofield</collectorName>
105769
</emphasis>
, ACC# B161483 (MO5148015)
</materialsCitation>
.
</paragraph>
</subSubSection>
</treatment>
</document>
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