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<document ID-DOI="http://dx.doi.org/10.3897/mycokeys.50.32432" ID-GBIF-Dataset="059c89da-7ae5-4dbb-b876-bd1617110873" ID-PMC="PMC6477855" ID-Pensoft-Pub="1314-4049-50-1" ID-PubMed="31043855" ModsDocAuthor="" ModsDocDate="2019" ModsDocID="1314-4049-50-1" ModsDocOrigin="MycoKeys 50" ModsDocTitle="Solving the taxonomic identity of Pseudotomentellatristis s.l. (Thelephorales, Basidiomycota) a multi-gene phylogeny and taxonomic review, integrating ecological and geographical data" checkinTime="1555333405629" checkinUser="pensoft" docAuthor="Svantesson, Sten, Larsson, Karl-Henrik, Koljalg, Urmas, W. May, Tom, Patrik Cangren,, Henrik Nilsson, R. &amp; Larsson, Ellen" docDate="2019" docId="B5ACA83EE7A150A0757CE4A6213CA371" docLanguage="en" docName="MycoKeys 50: 1-77" docOrigin="MycoKeys 50" docSource="http://dx.doi.org/10.3897/mycokeys.50.32432" docTitle="Pseudotomentella sciastra Svantesson &amp; Koljalg, sp. nov." docType="treatment" docVersion="4" lastPageNumber="38" masterDocId="BF413468CD59FFA53A5DFFC1FF9F272E" masterDocTitle="Solving the taxonomic identity of Pseudotomentellatristis s. l. (Thelephorales, Basidiomycota) - a multi-gene phylogeny and taxonomic review, integrating ecological and geographical data" masterLastPageNumber="77" masterPageNumber="1" pageNumber="36" updateTime="1668136202651" updateUser="ExternalLinkService">
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<mods:titleInfo>
<mods:title>Solving the taxonomic identity of Pseudotomentellatristis s. l. (Thelephorales, Basidiomycota) - a multi-gene phylogeny and taxonomic review, integrating ecological and geographical data</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Svantesson, Sten</mods:namePart>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Larsson, Karl-Henrik</mods:namePart>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Koljalg, Urmas</mods:namePart>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>W. May, Tom</mods:namePart>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Patrik Cangren,</mods:namePart>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Henrik Nilsson, R.</mods:namePart>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Larsson, Ellen</mods:namePart>
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<mods:typeOfResource>text</mods:typeOfResource>
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<mods:titleInfo>
<mods:title>MycoKeys</mods:title>
</mods:titleInfo>
<mods:part>
<mods:date>2019</mods:date>
<mods:detail type="volume">
<mods:number>50</mods:number>
</mods:detail>
<mods:extent unit="page">
<mods:start>1</mods:start>
<mods:end>77</mods:end>
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<mods:url>http://dx.doi.org/10.3897/mycokeys.50.32432</mods:url>
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<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">http://dx.doi.org/10.3897/mycokeys.50.32432</mods:identifier>
<mods:identifier type="Pensoft-Pub">1314-4049-50-1</mods:identifier>
</mods:mods>
<treatment ID-GBIF-Taxon="156201981" LSID="urn:lsid:plazi:treatment:B5ACA83EE7A150A0757CE4A6213CA371" httpUri="http://treatment.plazi.org/id/B5ACA83EE7A150A0757CE4A6213CA371" lastPageId="37" lastPageNumber="38" pageId="35" pageNumber="36">
<subSubSection pageId="35" pageNumber="36" type="nomenclature">
<paragraph pageId="35" pageNumber="36">
<taxonomicName LSID="MB829025" authority="Svantesson &amp; Koljalg" class="Agaricomycetes" family="Thelephoraceae" genus="Pseudotomentella" higherTaxonomySource="CoL" kingdom="Fungi" lsidName="Pseudotomentella sciastra" order="Thelephorales" pageId="35" pageNumber="36" phylum="Basidiomycota" rank="species" species="sciastra">
Pseudotomentella sciastra Svantesson &amp;
<normalizedToken originalValue="Kõljalg">Koljalg</normalizedToken>
</taxonomicName>
<taxonomicNameLabel pageId="35" pageNumber="36">sp. nov.</taxonomicNameLabel>
Fig. 15
</paragraph>
</subSubSection>
<subSubSection pageId="35" pageNumber="36" type="materials_examined">
<paragraph pageId="35" pageNumber="36">Type.</paragraph>
<paragraph pageId="35" pageNumber="36">
SWEDEN.
<normalizedToken originalValue="Småland">Smaland</normalizedToken>
:
<normalizedToken originalValue="Jönköping">Joenkoeping</normalizedToken>
, Svarttorp, Ramlaklint, boreonemoral, mixed, old-growth forest, on soil with intermediate pH, 12 September 2016, S. Svantesson 359 (holotype: GB!, GenBank Acc. No. ITS: MK290686).
</paragraph>
</subSubSection>
<subSubSection pageId="35" pageNumber="36" type="unite sh">
<paragraph pageId="35" pageNumber="36">UNITE SH.</paragraph>
<paragraph pageId="35" pageNumber="36">SH030554.07FU</paragraph>
</subSubSection>
<subSubSection pageId="35" pageNumber="36" type="etymology">
<paragraph pageId="35" pageNumber="36">Etymology.</paragraph>
<paragraph pageId="35" pageNumber="36">The name refers to the dark, star-like appearance of the spores.</paragraph>
</subSubSection>
<subSubSection lastPageId="36" lastPageNumber="37" pageId="35" pageNumber="36" type="description">
<paragraph pageId="35" pageNumber="36">Description.</paragraph>
<paragraph pageId="35" pageNumber="36">Basidiomata annual, resupinate, membranaceous, effused - often to several tens of centimetres in diameter. Mature parts continuous, with a cottony texture when fresh and a rather firm, fibrous and compact, yet quite soft and elastic texture when dried. Hymenium smooth, but sometimes strongly undulating; blue grey when fresh and brown with a pinkish hue when dried. Immature parts discontinuous, byssoid with a cottony texture, both when fresh and when dried. Subhymenium and hymenium of immature parts blue grey when fresh or occasionally green or even yellow; blue grey to brown grey when dried. Subiculum well developed, loose, fibrous, pale orange brown to brown; often forms the outer edge of basidiomata, extending noticeably beyond the hymenium.</paragraph>
<caption pageId="35" pageNumber="36">
<paragraph pageId="35" pageNumber="36">
Figure 15. Morphological features of
<taxonomicName lsidName="P. sciastra" pageId="35" pageNumber="36" rank="species" species="sciastra">P. sciastra</taxonomicName>
, mounted in KOH and macroscopically. A basidiospore in frontal face (O F110317) B in frontal and lateral faces (O F110317) C in lateral face (O F110317) D subicular hyphae (O F110317) E (SS420) F (SS312) mature basidiomata.
</paragraph>
</caption>
<paragraph pageId="35" pageNumber="36">Hyphal cords lacking, but loose bundles of subicular hyphae sometimes present.</paragraph>
<paragraph pageId="35" pageNumber="36">Hyphal system monomitic, clamp connections absent from all hyphae.</paragraph>
<paragraph pageId="35" pageNumber="36">
Subicular hyphae noticeably long and straight, thick-walled; forming a loose tissue. Individual hyphae (3.9-) 4.4-6.6 (-6.8)
<normalizedToken originalValue="μm">μm</normalizedToken>
wide, with a mean width of 5.0-5.8
<normalizedToken originalValue="μm">μm</normalizedToken>
; brown to orange brown in KOH, orange brown in water.
</paragraph>
<paragraph pageId="35" pageNumber="36">
Subhymenial hyphae often somewhat sinuous, thin to thick-walled; forming a rather dense tissue. Individual hyphae 2.9-5.0 (-6.0)
<normalizedToken originalValue="μm">μm</normalizedToken>
wide, with a mean width of 3.8-4.0
<normalizedToken originalValue="μm">μm</normalizedToken>
; hyaline to pale green in KOH, blue green in the presence of air; pale orange green to pale yellowish-green in water, with strongly granular contents.
</paragraph>
<paragraph pageId="35" pageNumber="36">Encrustation granular, probably amyloid (hard to observe due to the colour); blackish-brown in KOH, dark blue green in the presence of air; blackish-brown in water; scattered in occurrence on the upper parts of subhymenial hyphae and on the lower parts of basidia.</paragraph>
<paragraph pageId="36" pageNumber="37">
<pageBreakToken pageId="36" pageNumber="37" start="start">Basidia</pageBreakToken>
with four slightly curved sterigmata, occasionally two-sterigmate; clavate to narrowly clavate, sometimes clavopedunculate, thin-walled, with one-three slight constrictions. Dimensions: 42-67 (-68)
<normalizedToken originalValue="×">x</normalizedToken>
7.3-9.0 (-9.3)
<normalizedToken originalValue="μm">μm</normalizedToken>
; mean dimensions: 54-55
<normalizedToken originalValue="×">x</normalizedToken>
7.8-8.1
<normalizedToken originalValue="μm">μm</normalizedToken>
. Sterigmata (6.0-) 6.3-8.9 (-9.1)
<normalizedToken originalValue="μm">μm</normalizedToken>
long, with a mean length of 7.4-7.9
<normalizedToken originalValue="μm">μm</normalizedToken>
. Colours and reactions the same as for the subhymenial hyphae, but in addition often with granular contents in KOH.
</paragraph>
<paragraph pageId="36" pageNumber="37">Cystidial organs lacking.</paragraph>
<paragraph pageId="36" pageNumber="37">
Basidiospores in frontal face with a subcircular basic shape and a star- or cross-shaped, sometimes angular to nodulose outline, covered in bi- or trifurcate, sometimes singularly attached, echinuli. Nearly all spores with four-six distinct, rounded to more often square lobes or rarely corners; abnormally large spores originating from two-sterigmate basidia infrequently occurring. Frontal dimensions: (6.0-) 6.1-7.9 (-8.1)
<normalizedToken originalValue="×">x</normalizedToken>
6.3-8.2
<normalizedToken originalValue="μm">μm</normalizedToken>
; mean dimensions: 6.6-7.3
<normalizedToken originalValue="×">x</normalizedToken>
6.7-7.7
<normalizedToken originalValue="μm">μm</normalizedToken>
; Q-value: 0.9-1.1; mean Q-value: 1.0. Echinuli (0.5-) 0.6-1.2 (-1.4)
<normalizedToken originalValue="μm">μm</normalizedToken>
long, with a mean length of 0.8-0.9
<normalizedToken originalValue="μm">μm</normalizedToken>
. Lateral face ellipsoid to ovoid, with evenly rounded edges or one-three lobes. Lateral dimensions: (6.2-) 6.5-7.7 (-8.0)
<normalizedToken originalValue="×">x</normalizedToken>
(4.3-) 4.4-6.0 (-6.2)
<normalizedToken originalValue="μm">μm</normalizedToken>
; mean dimensions: 6.8-7.3
<normalizedToken originalValue="×">x</normalizedToken>
4.6-5.4
<normalizedToken originalValue="μm">μm</normalizedToken>
; Q-value: 1.2-1.6 (-1.7); mean Q-value: 1.3-1.5. Colour in KOH brown to yellow brown, in the presence of air often with a green to blue green reaction; in water pale greenish to pale greenish-orange; occasionally amyloid.
</paragraph>
<paragraph pageId="36" pageNumber="37">Chlamydospores lacking.</paragraph>
</subSubSection>
<subSubSection pageId="36" pageNumber="37" type="habitat">
<paragraph pageId="36" pageNumber="37">Habitat.</paragraph>
<paragraph pageId="36" pageNumber="37">
Recent Scandinavian collections have been made in mature to old coniferous, deciduous or mixed forests on soil with intermediate to high pH.
<taxonomicName class="Agaricomycetes" family="Thelephoraceae" genus="Pseudotomentella" higherTaxonomySource="CoL" kingdom="Fungi" lsidName="Pseudotomentella sciastra" order="Thelephorales" pageId="36" pageNumber="37" phylum="Basidiomycota" rank="species" species="sciastra">Pseudotomentella sciastra</taxonomicName>
has been found to form ectomycorrhiza with at least
<taxonomicName class="Magnoliopsida" family="Fagaceae" genus="Castanea" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Castanea sativa" order="Fagales" pageId="36" pageNumber="37" phylum="Tracheophyta" rank="species" species="sativa">Castanea sativa</taxonomicName>
,
<taxonomicName class="Pinopsida" family="Pinaceae" genus="Cedrus" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Cedrus libani" order="Pinales" pageId="36" pageNumber="37" phylum="Tracheophyta" rank="species" species="libani">Cedrus libani</taxonomicName>
,
<taxonomicName class="Liliopsida" family="Orchidaceae" genus="Neottia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Neottia ovata" order="Asparagales" pageId="36" pageNumber="37" phylum="Tracheophyta" rank="species" species="ovata">Neottia ovata</taxonomicName>
,
<taxonomicName class="Pinopsida" family="Pinaceae" genus="Picea" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Picea abies" order="Pinales" pageId="36" pageNumber="37" phylum="Tracheophyta" rank="species" species="abies">Picea abies</taxonomicName>
and
<taxonomicName class="Magnoliopsida" family="Fagaceae" genus="Quercus" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Quercus" order="Fagales" pageId="36" pageNumber="37" phylum="Tracheophyta" rank="genus">Quercus</taxonomicName>
sp. (
<bibRefCitation author="Koljalg, U" journalOrPublisher="New Phytologist" pageId="61" pageNumber="62" pagination="1063 - 1068" title="UNITE: a database providing web-based methods for the molecular identification of ectomycorrhizal fungi." url="https://doi.org/10.1111/j.1469-8137.2005.01376.x" volume="166" year="2005">
<normalizedToken originalValue="Kõljalg">Koljalg</normalizedToken>
et al. 2005
</bibRefCitation>
,
<bibRefCitation author="Nilsson, RH" journalOrPublisher="MycoKeys" pageId="62" pageNumber="63" url="https://doi.org/10.1093/nar/gky1022" year="2019">Nilsson et al. 2019</bibRefCitation>
).
</paragraph>
</subSubSection>
<subSubSection pageId="36" pageNumber="37" type="distribution">
<paragraph pageId="36" pageNumber="37">Distribution.</paragraph>
<paragraph pageId="36" pageNumber="37">Basidiomata encountered in: Estonia, Finland, Norway, Sweden, Turkey and the United Kingdom. Soil or root tip samples confirm presence also in: the Czech Republic, Mexico, Portugal (Madeira) and the United States.</paragraph>
</subSubSection>
<subSubSection pageId="36" pageNumber="37" type="remarks">
<paragraph pageId="36" pageNumber="37">Remarks.</paragraph>
<paragraph pageId="36" pageNumber="37">
All studied European specimens previously identified as
<taxonomicName lsidName="P. atrofusca" pageId="36" pageNumber="37" rank="species" species="atrofusca">P. atrofusca</taxonomicName>
belong to
<taxonomicName lsidName="P. sciastra" pageId="36" pageNumber="37" rank="species" species="sciastra">P. sciastra</taxonomicName>
. The two species display considerable morphological differences (see key).
</paragraph>
<paragraph pageId="36" pageNumber="37">
Within the
<taxonomicName lsidName="P. tristis" pageId="36" pageNumber="37" rank="species" species="tristis">P. tristis</taxonomicName>
group, the basidiomata of
<taxonomicName lsidName="P. sciastra" pageId="36" pageNumber="37" rank="species" species="sciastra">P. sciastra</taxonomicName>
are recognised by their lack of hyphal cords and skeletal hyphae and their soft, yet rather firm and compact and
<normalizedToken originalValue="±">+/-</normalizedToken>
elastic texture after drying, bluish to greenish colour of immature parts, wide subicular hyphae and small, star-shaped spores.
<taxonomicName class="Agaricomycetes" family="Thelephoraceae" genus="Pseudotomentella" higherTaxonomySource="CoL" kingdom="Fungi" lsidName="Pseudotomentella pinophila" order="Thelephorales" pageId="36" pageNumber="37" phylum="Basidiomycota" rank="species" species="pinophila">Pseudotomentella pinophila</taxonomicName>
is similar, but has narrower subicular hyphae and larger spores.
</paragraph>
</subSubSection>
<subSubSection lastPageId="37" lastPageNumber="38" pageId="36" pageNumber="37" type="additional specimens studied">
<paragraph pageId="36" pageNumber="37">Additional specimens studied.</paragraph>
<paragraph pageId="36" pageNumber="37">
ESTONIA. Ida-Virumaa: Illuka, Puhatu Nature Reserve, Poruni primeval forest, wetlands, 1 October 2006, U.
<normalizedToken originalValue="Kõljalg">Koljalg</normalizedToken>
(TU 100644*); [Saare,] Saarema, Kihelkonna,
<normalizedToken originalValue="Hülgera">Huelgera</normalizedToken>
, Sampling area G4422, 25 September 2015, A. Saitta (TU 124211*, TU 124213*);
</paragraph>
<paragraph pageId="36" pageNumber="37">
FINLAND.
<normalizedToken originalValue="Etelä-Häme">Etelae-Haeme</normalizedToken>
:
<normalizedToken originalValue="Jyväskylä">Jyvaeskylae</normalizedToken>
, Korpilahti, Oittila, on dead trunk of
<taxonomicName class="Magnoliopsida" family="Ulmaceae" genus="Ulmus" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Ulmus glabra" order="Rosales" pageId="36" pageNumber="37" phylum="Tracheophyta" rank="species" species="glabra">Ulmus glabra</taxonomicName>
, 3 September 2014, U.
<normalizedToken originalValue="Söderholm">Soederholm</normalizedToken>
4755 (H 6052710);
<normalizedToken originalValue="Kanta-Häme">Kanta-Haeme</normalizedToken>
: Lammi, Lammi Biological Station, Leib-rich forest, 12 September 2001, K.-H. Larsson (TU 108754*);
</paragraph>
<paragraph pageId="37" pageNumber="38">
<pageBreakToken pageId="37" pageNumber="38" start="start">NORWAY</pageBreakToken>
. Oslo (county): Oslo (municipality),
<normalizedToken originalValue="Bygdøy">Bygdoy</normalizedToken>
,
<normalizedToken originalValue="Hengsåsen">Hengsasen</normalizedToken>
, boreonemoral, mixed forest on soil with high pH, 16 August 2010, K.-H. Larsson and N. Svensson (O F110317*);
<normalizedToken originalValue="Østfold">Ostfold</normalizedToken>
: Moss,
<normalizedToken originalValue="Jeløya">Jeloya</normalizedToken>
, boreonemoral, mixed forest on soil with high pH, 26 September 2010, S. Svantesson and N. Svensson (O F110318*); Oppland: Dovre, Grimsdalen, Austre
<normalizedToken originalValue="Stakkstosætra">Stakkstosaetra</normalizedToken>
,
<taxonomicName class="Pinopsida" family="Pinaceae" genus="Pinus" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Pinus sylvestris" order="Pinales" pageId="37" pageNumber="38" phylum="Tracheophyta" rank="species" species="sylvestris">Pinus sylvestris</taxonomicName>
forest, 26 August 2010, K.-H. Larsson and S. Svantesson (O F110301); Vestfold: Larvik, Kvelde,
<normalizedToken originalValue="Jordstøyp">Jordstoyp</normalizedToken>
, boreonemoral, mixed forest on soil with intermediate pH, 1 October 2010, K.-H. Larsson (O F110302); Ibidem, on soil with high pH, 1 September 2010, K.-H. Larsson and S. Svantesson (O F110303, F110304); Aust-Agder,
<normalizedToken originalValue="Risør">Risor</normalizedToken>
, Glupedalen, boreonemoral, mixed forest on soil with high pH, 10 September 2010, S. Svantesson and N. Svensson (O F110319, F110320, F110321); Aust-Agder: Tvedestrand, Eidbo, boreonemoral, mixed forest on soil with intermediate pH, 10 September 2010, S. Svantesson and N. Svensson (O F110322*); Oslo (county): Oslo (municipality), Gressholmen, boreonemoral, mixed forest on soil with high pH, 20 September 2010, S. Svantesson (O F110323, F110324); Oslo (county): Oslo (municipality), Killingen, boreonemoral, mixed forest on soil with high pH, 22 September 2010, S. Svantesson (O F110325); Buskerud: Ringerike, Ulltveit Nature Reserve, boreonemoral, coniferous forest on soil with high pH, 25 September 2010, S. Svantesson and N. Svensson (O F110326);
</paragraph>
<paragraph pageId="37" pageNumber="38">
SWEDEN.
<normalizedToken originalValue="Småland">Smaland</normalizedToken>
:
<normalizedToken originalValue="Jönköping">Joenkoeping</normalizedToken>
, Svarttorp, Ramlaklint, boreonemoral, mixed, old-growth forest, on soil with intermediate pH, 12 September 2016, S. Svantesson 360 (GB);
<normalizedToken originalValue="Bohuslän">Bohuslaen</normalizedToken>
: Tanum (municipality), Tanum (parish),
<normalizedToken originalValue="Lammön">Lammoen</normalizedToken>
, boreonemoral, deciduous forest on soil with high pH, 6 September 2016, S. Svantesson 312* (GB);
<normalizedToken originalValue="Västergötland">Vaestergoetland</normalizedToken>
:
<normalizedToken originalValue="Göteborg">Goeteborg</normalizedToken>
, Askim,
<normalizedToken originalValue="Årekärrslunden">Arekaerrslunden</normalizedToken>
, 24 October 2015, K.-H. Larsson 17308b* (GB); Dalsland, Mellerud,
<normalizedToken originalValue="Skållerud">Skallerud</normalizedToken>
,
<normalizedToken originalValue="Österbo">Oesterbo</normalizedToken>
, mixed forest on soil with high pH, 20 September 2017, S. Svantesson 420* (GB); Ibidem, Norgekullen SW, coniferous forest on soil with high pH, 20 September 2017, S. Svantesson 423* (GB);
</paragraph>
<paragraph pageId="37" pageNumber="38">
TURKEY. [Antalya:
<normalizedToken originalValue="Elmalı">Elmali</normalizedToken>
,] Ciglikara, 2009, L. Tedersoo (TU 110153*); [Isparta:]
<normalizedToken originalValue="Yukan-Gökdere">Yukan-Goekdere</normalizedToken>
[=
<normalizedToken originalValue="Yukarı">Yukari</normalizedToken>
<normalizedToken originalValue="Gökdere">Goekdere</normalizedToken>
], 2009, L. Tedersoo (TU 110113*);
</paragraph>
<paragraph pageId="37" pageNumber="38">
UNITED KINGDOM. Scotland, Aberdeenshire: Inverurie, Burnhervie, in a small group of planted
<taxonomicName class="Magnoliopsida" family="Salicaceae" genus="Populus" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Populus" order="Malpighiales" pageId="37" pageNumber="38" phylum="Tracheophyta" rank="genus">Populus</taxonomicName>
trees, 16 September 2005, I. J. Alexander (TAA 187322*).
</paragraph>
</subSubSection>
</treatment>
</document>