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<document ID-DOI="http://dx.doi.org/10.3897/phytokeys.76.10808" ID-PMC="PMC5301984" ID-Pensoft-Pub="1314-2003-76-39" ID-Pensoft-UUID="FFBD980EFF8A8924FFD5FF9FFF903809" ID-PubMed="28228686" ID-Zenodo-Dep="238999" ModsDocID="1314-2003-76-39" checkinTime="1484231100784" checkinUser="pensoft" docAuthor="Testoni, Daniel &amp; Linder, H. Peter" docDate="2017" docId="37258E6E3C345B13A5253C38F366E5E9" docLanguage="en" docName="PhytoKeys 76: 39-69" docOrigin="PhytoKeys 76" docPubDate="2017-01-11" docSource="http://dx.doi.org/10.3897/phytokeys.76.10808" docTitle="Cortaderia egmontiana (Roem. &amp; Schult.) M. Lyle ex Connor, Darwiniana 49: 90. 2011." docType="treatment" docVersion="3" id="FFBD980EFF8A8924FFD5FF9FFF903809" lastPageNumber="53" masterDocId="FFBD980EFF8A8924FFD5FF9FFF903809" masterDocTitle="Synoptic taxonomy of Cortaderia Stapf (Danthonioideae, Poaceae)" masterLastPageNumber="69" masterPageNumber="39" pageNumber="53" updateTime="1668141907645" updateUser="ExternalLinkService">
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo>
<mods:title>Synoptic taxonomy of Cortaderia Stapf (Danthonioideae, Poaceae)</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Testoni, Daniel</mods:namePart>
<mods:affiliation>Herbario BBB, Departamento de Biologia, Bioquimica y Farmacia, Universidad Nacional del Sur, San Juan 670, CP- 8000 Bahia Blanca, Argentina</mods:affiliation>
<mods:nameIdentifier type="email">daniel.testoni@uns.edu.ar</mods:nameIdentifier>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Linder, H. Peter</mods:namePart>
<mods:affiliation>Department of Systematic and Evolutionary Botany, University of Zurich, Zollikerstrasse 107, CH- 8008 Zurich, Switzerland</mods:affiliation>
</mods:name>
<mods:typeOfResource>text</mods:typeOfResource>
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<mods:title>PhytoKeys</mods:title>
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<mods:part>
<mods:date>2017</mods:date>
<mods:detail type="pubDate">
<mods:number>2017-01-11</mods:number>
</mods:detail>
<mods:detail type="volume">
<mods:number>76</mods:number>
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<mods:start>39</mods:start>
<mods:end>69</mods:end>
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<mods:url>http://dx.doi.org/10.3897/phytokeys.76.10808</mods:url>
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<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">http://dx.doi.org/10.3897/phytokeys.76.10808</mods:identifier>
<mods:identifier type="Pensoft-Pub">1314-2003-76-39</mods:identifier>
<mods:identifier type="Pensoft-UUID">FFBD980EFF8A8924FFD5FF9FFF903809</mods:identifier>
<mods:identifier type="Zenodo-Dep">238999</mods:identifier>
</mods:mods>
<treatment ID-GBIF-Taxon="182226345" LSID="urn:lsid:plazi:treatment:37258E6E3C345B13A5253C38F366E5E9" httpUri="http://treatment.plazi.org/id/37258E6E3C345B13A5253C38F366E5E9" lastPageNumber="53" pageId="14" pageNumber="53">
<subSubSection pageId="14" pageNumber="53" type="nomenclature">
<paragraph pageId="14" pageNumber="53">
5.
<taxonomicName LSID="37258E6E-3C34-5B13-A525-3C38F366E5E9" authority="(Roem. &amp; Schult.) M. Lyle ex Connor, Darwiniana 49: 90. 2011." authorityName="(Roem. &amp; Schult.) M. Lyle ex Connor, Darwiniana 49: 90. 2011." class="Liliopsida" family="Poaceae" genus="Cortaderia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Cortaderia egmontiana" order="Poales" pageId="14" pageNumber="53" phylum="Tracheophyta" rank="species" species="egmontiana">Cortaderia egmontiana (Roem. &amp; Schult.) M.Lyle ex Connor, Darwiniana 49: 90. 2011.</taxonomicName>
<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Lemmas of selected species of Cortaderia. A Cortaderia selloana, Juergens 40 (B) B Cortaderia araucana, Borchers s. n. (US) C Cortaderia speciosa, P. M. Peterson 12766 (US) D Cortaderia vaginata, L. B. Smith, P. R. Reitz &amp; R. Klein 7761 (B) E Cortaderia egmontiana, P. M. Peterson, R. J. Soreng &amp; N. Refulio-Rodriguez 17508 (US) F Cortaderia modesta, A. Chase 8288 (US) G Cortaderia hieronymi, A. Burkart et al. 30395 (P) - note that awn and setae are much longer than illustrated H Cortaderia nitida, S. Laegaard 52786 (K) I Cortaderia sericantha, E. Asplund 17175 (B) J Cortaderia bifida, D. N. Smith &amp; J. Cabanillas 7167 (US) K Cortaderia hapalotricha, J. C. Solomon &amp; R. Chevalier 16620 L Cortaderia columbiana, J. P. Schulz 318 (US). All at same magnification." figureDoi="10.3897/phytokeys.76.10808.figure1" httpUri="https://binary.pensoft.net/fig/117855" pageId="14" pageNumber="53">Figs 1E</figureCitation>
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Leaf anatomy of Cortaderia, as evident from transverse sections. A-B Cortaderia selloana (Villamil 11738) C Cortaderia speciosa (Testoni 644) D Cortaderia vaginata (Zanin 1654). Comparison of bulliform cells in Egmontiana group: E Cortaderia egmontiana (Testoni 634) F Cortaderia modesta (Carauta 927) G Cortaderia vaginata (Zanin 1654). Structures referred to in the descriptions are labelled as follows: 1, multi-layered abaxial sub-epidermal collenchyma layer; 2, aerenchyma; 3, chlorenchyma; 4, primary vascular bundle; 5, midrib; 6, colourless cells; 7, empty cells; 8, bulliform cells." figureDoi="10.3897/phytokeys.76.10808.figure2" httpUri="https://binary.pensoft.net/fig/117856" pageId="14" pageNumber="53">, 2E</figureCitation>
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Leaf anatomy of Cortaderia, as evident from transverse sections. A Cortaderia egmontiana (Moore 2677) B Cortaderia modesta (Glaziou 17913) C Cortaderia hieronymi (Garcia 563) D Cortaderia nitida (Laegaard 53121) E Cortaderia boliviensis (Beck 11273); F Cortaderia sericantha (Ramsay 967); G Cortaderia echinata (Peterson 21587) H Cortaderia bifida (Renvoize 4202) I Cortaderia hapalotricha (Laegaard 53305) J Cortaderia roraimensis (Maguire 60448). Structures referred to in the descriptions are labelled as follows: 1, multi-layered abaxial sub-epidermal collenchyma layer; 2, adaxial islands of collenchyma in the abaxial grooves; 3, chlorenchyma; 4, primary vascular bundle; 5, midrib." figureDoi="10.3897/phytokeys.76.10808.figure3" httpUri="https://binary.pensoft.net/fig/117857" pageId="14" pageNumber="53">, 3A</figureCitation>
</paragraph>
</subSubSection>
<subSubSection pageId="14" pageNumber="53" type="reference_group">
<paragraph pageId="14" pageNumber="53">
<taxonomicName authorityName="Roem &amp; Schult" authorityYear="1817" class="Liliopsida" family="Poaceae" genus="Arundo" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Arundo egmontiana" order="Poales" pageId="14" pageNumber="53" phylum="Tracheophyta" rank="species" species="egmontiana">Arundo egmontiana</taxonomicName>
Roem. &amp; Schult., Syst. Veg., ed. 15 b [Roemer &amp; Schultes] 2: 511. 1817.
<taxonomicName class="Liliopsida" family="Poaceae" genus="Phragmites" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Phragmites egmontiana" order="Poales" pageId="14" pageNumber="53" phylum="Tracheophyta" rank="species" species="egmontiana">Phragmites egmontiana</taxonomicName>
(Roem. &amp; Schult.) Trin. ex Steud., Nomen. Bot. (ed. 2) 2: 324. 1840. Type: Falkland / Malvinas Islands, Port Egmont, R. J. Schuttleworth s.n. (type: BM photo!).
</paragraph>
<paragraph pageId="14" pageNumber="53">
<taxonomicName class="Liliopsida" family="Poaceae" genus="Arundo" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Arundo pilosa" order="Poales" pageId="14" pageNumber="53" phylum="Tracheophyta" rank="species" species="pilosa">Arundo pilosa</taxonomicName>
<normalizedToken originalValue="d’Urv">d'Urv</normalizedToken>
.,
<normalizedToken originalValue="Mém">Mem</normalizedToken>
. Soc. Linn. Paris 4: 603. 1826;
<taxonomicName class="Liliopsida" family="Poaceae" genus="Cortaderia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Cortaderia pilosa" order="Poales" pageId="14" pageNumber="53" phylum="Tracheophyta" rank="species" species="pilosa">Cortaderia pilosa</taxonomicName>
(
<normalizedToken originalValue="d’Urv">d'Urv</normalizedToken>
.) Hack. ex
<normalizedToken originalValue="Dusén">Dusen</normalizedToken>
, Bol. Acad. Nac. Ci. 16: 253. 1900;
<taxonomicName class="Liliopsida" family="Poaceae" genus="Gynerium" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Gynerium pilosum" order="Poales" pageId="14" pageNumber="53" phylum="Tracheophyta" rank="species" species="pilosum">Gynerium pilosum</taxonomicName>
(
<normalizedToken originalValue="d’Urv">d'Urv</normalizedToken>
.) Macloskie in Scott, Rep. Princeton Univ. Exped. Patagonia, Botany 8, part 1: 213. 1904;
<taxonomicName authorityName="Dusén" authorityYear="1915" class="Liliopsida" family="Poaceae" genus="Phragmites" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Phragmites pilosa" order="Poales" pageId="14" pageNumber="53" phylum="Tracheophyta" rank="species" species="pilosa">Phragmites pilosa</taxonomicName>
(
<normalizedToken originalValue="d’Urv">d'Urv</normalizedToken>
.) Macloskie &amp;
<normalizedToken originalValue="Dusén">Dusen</normalizedToken>
in Scott, Rep. Princeton Univ. Exped. Patagonia, Botany 8, suppl. bot.: 50. 1915.
<taxonomicName class="Liliopsida" family="Poaceae" genus="Ampelodesmos" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Ampelodesmos australis" order="Poales" pageId="14" pageNumber="53" phylum="Tracheophyta" rank="species" species="australis">Ampelodesmos australis</taxonomicName>
Brongn. in Duperrey, Voy. Monde 2(2): 31. 1829, nom. illeg. Type: Falkland / Malvinas Islands, 1825, J. S. C. D.
<normalizedToken originalValue="D’Urville">D'Urville</normalizedToken>
s.n. (central inflorescence designated as lectotype by Connor &amp; Edgar, Taxon 23: 600 (1974): P 00740221! (http://mediaphoto.mnhn.fr/media/1443644100310dGB3ZqFqm8JGPDaz; isolectotype: B!).
</paragraph>
<paragraph pageId="14" pageNumber="53">
<taxonomicName authorityName="Steud" authorityYear="1854" class="Liliopsida" family="Poaceae" genus="Calamagrostis" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Calamagrostis patula" order="Poales" pageId="14" pageNumber="53" phylum="Tracheophyta" rank="species" species="patula">Calamagrostis patula</taxonomicName>
Steud., Syn. Pl. Glumac. 1(6): 422. 1854. Type: Chile, Huiti, sine data, W. Lechler 760 (lectotype, selected here: P-00740220 (http://mediaphoto.mnhn.fr/media/1443644088798jsLY8AS29Euj4oHx); isolectotypes: GOET; W photo!)
</paragraph>
<paragraph pageId="14" pageNumber="53">
<taxonomicName authorityName="Phil" authorityYear="1873" class="Liliopsida" family="Poaceae" genus="Poa" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Poa phragmites" order="Poales" pageId="14" pageNumber="53" phylum="Tracheophyta" rank="species" species="phragmites">Poa phragmites</taxonomicName>
Phil., Anales Univ. Chile 43: 576. 1873. Type: Chile, volcan de Osorno, 1872, C. Juliet s.n. (holotype: SGO photo! (http://plants.jstor.org/stable/viewer/10.5555/al.ap.specimen.sgo000000667; isotype: BAA! frag. ex SGO);
</paragraph>
<paragraph pageId="14" pageNumber="53">
<taxonomicName authorityName="Phil" authorityYear="1896" class="Liliopsida" family="Poaceae" genus="Gynerium" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Gynerium nanum" order="Poales" pageId="14" pageNumber="53" phylum="Tracheophyta" rank="species" species="nanum">Gynerium nanum</taxonomicName>
Phil., Anales Univ. Chile 94: 155. 1896. Type: Falkland / Malvinas Islands, Dec. 1884, C. Martin s.n. (lectotype, designated as holotype by Connor &amp; Edgar, Taxon 23: 600 (1974): SGO 065328!; isolectotype: BAA!).
</paragraph>
<paragraph pageId="14" pageNumber="53">
<taxonomicName class="Liliopsida" family="Poaceae" genus="Calamagrostis" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Calamagrostis scirpiformis" order="Poales" pageId="14" pageNumber="53" phylum="Tracheophyta" rank="species" species="scirpiformis">Calamagrostis scirpiformis</taxonomicName>
Phil., Anales Univ. Chile 94: 20. 1896. Type: Chile, ad lacum Llanquihue, I-1866, F. Philippi s.n. (lectotype, designated here: SGO 37097; isolectotypes: US, BAA!)
</paragraph>
<paragraph pageId="14" pageNumber="53">
<taxonomicName authorityName="Conert" authorityYear="1961" class="Liliopsida" family="Poaceae" genus="Cortaderia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Cortaderia minima" order="Poales" pageId="14" pageNumber="53" phylum="Tracheophyta" rank="species" species="minima">Cortaderia minima</taxonomicName>
Conert, Syst. Anat.
<taxonomicName authorityName="Testoni &amp; Linder" authorityYear="2017" family="Poaceae" higherTaxonomySource="treatment-meta" kingdom="Plantae" lsidName="" order="Poales" pageId="14" pageNumber="53" rank="tribe" tribe="Arundineae">Arundineae</taxonomicName>
119. 1961;
<taxonomicName authorityName="Nicora" authorityYear="1973" baseAuthorityName="Conert" class="Liliopsida" family="Poaceae" genus="Cortaderia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Cortaderia pilosa subsp. var. var. minima" order="Poales" pageId="14" pageNumber="53" phylum="Tracheophyta" rank="variety" species="pilosa" subSpecies="var." variety="minima">Cortaderia pilosa var. minima</taxonomicName>
(Conert) Nicora, Darwiniana 18(1-2): 80. 1973. Type: Chile, Andes, Villarrica, &quot;in feuchten Schluchten nahe der Waldgrenze&quot;, 1897, F. W. Neger s.n. (lectotype, designated as holotype by Conert, Syst. Anat.
<taxonomicName authorityName="Testoni &amp; Linder" authorityYear="2017" family="Poaceae" higherTaxonomySource="treatment-meta" kingdom="Plantae" lsidName="" order="Poales" pageId="14" pageNumber="53" rank="tribe" tribe="Arundineae">Arundineae</taxonomicName>
119 (1961): M; isolectotypes: W5945! B! fragm. ex M).
</paragraph>
</subSubSection>
<subSubSection pageId="14" pageNumber="53" type="etymology">
<paragraph pageId="14" pageNumber="53">Etymology.</paragraph>
<paragraph pageId="14" pageNumber="53">
<emphasis italics="true" pageId="14" pageNumber="53">egmontiana</emphasis>
: called after Port Egmont in the Falklands / Malvinas Islands.
</paragraph>
</subSubSection>
<subSubSection pageId="14" pageNumber="53" type="nomenclatural comments">
<paragraph pageId="14" pageNumber="53">Nomenclatural comments.</paragraph>
<paragraph pageId="14" pageNumber="53">
Brongniart (1829) described
<taxonomicName class="Liliopsida" family="Poaceae" genus="Ampelodesmos" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Ampelodesmos australis" order="Poales" pageId="14" pageNumber="53" phylum="Tracheophyta" rank="species" species="australis">
<emphasis italics="true" pageId="14" pageNumber="53">Ampelodesmos australis</emphasis>
</taxonomicName>
, and explicitly included
<taxonomicName class="Liliopsida" family="Poaceae" genus="Arundo" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Arundo pilosa" order="Poales" pageId="14" pageNumber="53" phylum="Tracheophyta" rank="species" species="pilosa">
<emphasis italics="true" pageId="14" pageNumber="53">Arundo pilosa</emphasis>
</taxonomicName>
<normalizedToken originalValue="D’Urville">D'Urville</normalizedToken>
as a synonym, noting that this species is better placed in
<taxonomicName authorityName="Link" authorityYear="1827" class="Liliopsida" family="Poaceae" genus="Ampelodesmos" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Ampelodesmos" order="Poales" pageId="14" pageNumber="53" phylum="Tracheophyta" rank="genus">
<emphasis italics="true" pageId="14" pageNumber="53">Ampelodesmos</emphasis>
</taxonomicName>
.
</paragraph>
</subSubSection>
<subSubSection pageId="14" pageNumber="53" type="taxonomy">
<paragraph pageId="14" pageNumber="53">Taxonomy.</paragraph>
<paragraph pageId="14" pageNumber="53">
The species can be readily diagnosed by the combination of compact inflorescences, almost glabrous leaves, and either no, or poorly developed, awns and setae on the lemmas. The habit and dense inflorescences are as in
<taxonomicName class="Liliopsida" family="Poaceae" genus="Cortaderia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Cortaderia sericantha" order="Poales" pageId="14" pageNumber="53" phylum="Tracheophyta" rank="species" species="sericantha">
<emphasis italics="true" pageId="14" pageNumber="53">Cortaderia sericantha</emphasis>
</taxonomicName>
, but
<taxonomicName class="Liliopsida" family="Poaceae" genus="Cortaderia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Cortaderia egmontiana" order="Poales" pageId="14" pageNumber="53" phylum="Tracheophyta" rank="species" species="egmontiana">
<emphasis italics="true" pageId="14" pageNumber="53">Cortaderia egmontiana</emphasis>
</taxonomicName>
differs by the absence of setae, and by the almost completely glabrous leaves. The lemma and spikelet morphology (reduced or absent awns and setae) suggests an affinity to the eastern Brazilian species
<taxonomicName class="Liliopsida" family="Poaceae" genus="Cortaderia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Cortaderia vaginata" order="Poales" pageId="14" pageNumber="53" phylum="Tracheophyta" rank="species" species="vaginata">
<emphasis italics="true" pageId="14" pageNumber="53">Cortaderia vaginata</emphasis>
</taxonomicName>
and
<taxonomicName class="Liliopsida" family="Poaceae" genus="Cortaderia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Cortaderia modesta" order="Poales" pageId="14" pageNumber="53" phylum="Tracheophyta" rank="species" species="modesta">
<emphasis italics="true" pageId="14" pageNumber="53">Cortaderia modesta</emphasis>
</taxonomicName>
. From these two species
<taxonomicName class="Liliopsida" family="Poaceae" genus="Cortaderia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Cortaderia egmontiana" order="Poales" pageId="14" pageNumber="53" phylum="Tracheophyta" rank="species" species="egmontiana">
<emphasis italics="true" pageId="14" pageNumber="53">Cortaderia egmontiana</emphasis>
</taxonomicName>
can be separated by the compact inflorescences and the tendency of the leaf blades to disarticulate from the sheaths. It is the only
<taxonomicName authorityName="Testoni &amp; Linder" authorityYear="2017" class="Liliopsida" family="Poaceae" genus="Cortaderia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Cortaderia" order="Poales" pageId="14" pageNumber="53" phylum="Tracheophyta" rank="genus">
<emphasis italics="true" pageId="14" pageNumber="53">Cortaderia</emphasis>
</taxonomicName>
species in southern South American temperate zone. The leaf anatomy (Figs
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Leaf anatomy of Cortaderia, as evident from transverse sections. A-B Cortaderia selloana (Villamil 11738) C Cortaderia speciosa (Testoni 644) D Cortaderia vaginata (Zanin 1654). Comparison of bulliform cells in Egmontiana group: E Cortaderia egmontiana (Testoni 634) F Cortaderia modesta (Carauta 927) G Cortaderia vaginata (Zanin 1654). Structures referred to in the descriptions are labelled as follows: 1, multi-layered abaxial sub-epidermal collenchyma layer; 2, aerenchyma; 3, chlorenchyma; 4, primary vascular bundle; 5, midrib; 6, colourless cells; 7, empty cells; 8, bulliform cells." figureDoi="10.3897/phytokeys.76.10808.figure2" httpUri="https://binary.pensoft.net/fig/117856" pageId="14" pageNumber="53">2E</figureCitation>
,
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Leaf anatomy of Cortaderia, as evident from transverse sections. A Cortaderia egmontiana (Moore 2677) B Cortaderia modesta (Glaziou 17913) C Cortaderia hieronymi (Garcia 563) D Cortaderia nitida (Laegaard 53121) E Cortaderia boliviensis (Beck 11273); F Cortaderia sericantha (Ramsay 967); G Cortaderia echinata (Peterson 21587) H Cortaderia bifida (Renvoize 4202) I Cortaderia hapalotricha (Laegaard 53305) J Cortaderia roraimensis (Maguire 60448). Structures referred to in the descriptions are labelled as follows: 1, multi-layered abaxial sub-epidermal collenchyma layer; 2, adaxial islands of collenchyma in the abaxial grooves; 3, chlorenchyma; 4, primary vascular bundle; 5, midrib." figureDoi="10.3897/phytokeys.76.10808.figure3" httpUri="https://binary.pensoft.net/fig/117857" pageId="14" pageNumber="53">3A</figureCitation>
) does not show any distinctive peculiarities.
</paragraph>
<paragraph pageId="14" pageNumber="53">
There is remarkable intraspecific variation in the spikelet and floret sizes, and
<bibRefCitation author="Conert, J" journalOrPublisher="Cramer, Weinheim" pageId="26" pageNumber="65" refId="B5" refString="Conert, J, 1961. Die Systematik und Anatomie der Arundineae. J. Cramer, Weinheim" title="Die Systematik und Anatomie der Arundineae. J." year="1961">Conert (1961)</bibRefCitation>
separated the forms with smaller spikelets as
<taxonomicName authorityName="Conert" authorityYear="1961" class="Liliopsida" family="Poaceae" genus="Cortaderia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Cortaderia minima" order="Poales" pageId="14" pageNumber="53" phylum="Tracheophyta" rank="species" species="minima">
<emphasis italics="true" pageId="14" pageNumber="53">Cortaderia minima</emphasis>
</taxonomicName>
.
<bibRefCitation author="Moore, DM" journalOrPublisher="Anthony Nelson, London" pageId="27" pageNumber="66" refId="B24" refString="Moore, DM, 1983. Flora of Tierra del Fuego. Anthony Nelson, London" title="Flora of Tierra del Fuego." year="1983">Moore (1983)</bibRefCitation>
suggested that the two taxa were latitudinally separated, with the southern populations constituting
<taxonomicName class="Liliopsida" family="Poaceae" genus="Cortaderia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Cortaderia pilosa" order="Poales" pageId="14" pageNumber="53" phylum="Tracheophyta" rank="species" species="pilosa">
<emphasis italics="true" pageId="14" pageNumber="53">Cortaderia pilosa</emphasis>
</taxonomicName>
, and the northern
<taxonomicName authorityName="Conert" authorityYear="1961" class="Liliopsida" family="Poaceae" genus="Cortaderia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Cortaderia minima" order="Poales" pageId="14" pageNumber="53" phylum="Tracheophyta" rank="species" species="minima">
<emphasis italics="true" pageId="14" pageNumber="53">Cortaderia minima</emphasis>
</taxonomicName>
. On the available material, there is indeed a break in the glume length variation. However, this fits no ecological or geographical pattern, and both small and large-glume forms occur in both the Falkland / Malvinas islands and Tierra del Fuego. Further north, indeed, only the small-glume form is found. This suggests that this size variation has no biological significance, accordingly it is ignored here.
</paragraph>
</subSubSection>
</treatment>
</document>
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