treatments-xml/data/CC/B8/6D/CCB86DF752E5583C41CBB034B14BFBB2.xml

<document ID-DOI="http://dx.doi.org/10.3897/phytokeys.17.3485" ID-PMC="PMC3519352" ID-Pensoft-Pub="1314-2003-17-27" ID-Pensoft-UUID="13085151FF8A1166AA41FFE7FFEC1914" ID-PubMed="23233816" ID-Zenodo-Dep="576141" ModsDocID="1314-2003-17-27" checkinTime="1451251973990" checkinUser="pensoft" docAuthor="Krings, Alexander &amp; Morillo, Gilberto" docDate="2012" docId="CCB86DF752E5583C41CBB034B14BFBB2" docLanguage="en" docName="PhytoKeys 17: 27-39" docOrigin="PhytoKeys 17" docPubDate="2012-09-26" docSource="http://dx.doi.org/10.3897/phytokeys.17.3485" docTitle="Matelea brevistipitata Krings &amp; Morillo 2012, sp. nov." docType="treatment" docVersion="6" id="13085151FF8A1166AA41FFE7FFEC1914" lastPageNumber="31" masterDocId="13085151FF8A1166AA41FFE7FFEC1914" masterDocTitle="Two new species in the Matelea stenopetala complex (Apocynaceae, Asclepiadoideae) from the Guiana Shield and Amazonian Brazil" masterLastPageNumber="39" masterPageNumber="27" pageNumber="29" updateTime="1668140227011" updateUser="ExternalLinkService">
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<mods:titleInfo>
<mods:title>Two new species in the Matelea stenopetala complex (Apocynaceae, Asclepiadoideae) from the Guiana Shield and Amazonian Brazil</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Krings, Alexander</mods:namePart>
<mods:affiliation>Herbarium, Department of Plant Biology, North Carolina State University, Raleigh, NC 27695 - 7612, USA</mods:affiliation>
<mods:nameIdentifier type="email">alexander_krings@ncsu.edu</mods:nameIdentifier>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Morillo, Gilberto</mods:namePart>
<mods:affiliation>Herbario Carlos Liscano, Facultad de Ciencias Forestales y Ambientales, Universidad de Los Andes, Merida 5101 - A, Venezuela</mods:affiliation>
</mods:name>
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<mods:title>PhytoKeys</mods:title>
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<mods:date>2012</mods:date>
<mods:detail type="pubDate">
<mods:number>2012-09-26</mods:number>
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<mods:detail type="volume">
<mods:number>17</mods:number>
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<mods:start>27</mods:start>
<mods:end>39</mods:end>
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<mods:url>http://dx.doi.org/10.3897/phytokeys.17.3485</mods:url>
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<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">http://dx.doi.org/10.3897/phytokeys.17.3485</mods:identifier>
<mods:identifier type="Pensoft-Pub">1314-2003-17-27</mods:identifier>
<mods:identifier type="Pensoft-UUID">13085151FF8A1166AA41FFE7FFEC1914</mods:identifier>
<mods:identifier type="Zenodo-Dep">576141</mods:identifier>
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<treatment ID-GBIF-Taxon="152024396" LSID="urn:lsid:plazi:treatment:CCB86DF752E5583C41CBB034B14BFBB2" httpUri="http://treatment.plazi.org/id/CCB86DF752E5583C41CBB034B14BFBB2" lastPageId="4" lastPageNumber="31" pageId="2" pageNumber="29">
<subSubSection pageId="2" pageNumber="29" type="nomenclature">
<paragraph pageId="2" pageNumber="29">
<taxonomicName LSID="CCB86DF7-52E5-583C-41CB-B034B14BFBB2" authority="Krings &amp; Morillo" authorityName="Krings &amp; Morillo" authorityYear="2012" class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="Matelea brevistipitata" order="Gentianales" pageId="2" pageNumber="29" phylum="Magnoliophyta" rank="species" species="brevistipitata" status="sp. nov.">Matelea brevistipitata Krings &amp; Morillo</taxonomicName>
<taxonomicNameLabel pageId="2" pageNumber="29">sp. nov.</taxonomicNameLabel>
<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Abaxial corolla surface in the adaxially-pubescent-flowered members of the Matelea stenopetala complex. A Matelea trichopedicellata (based on Daly et al. 1619, US) B Matelea hildegardiana (based on Liesner 23469, U) C Matelea pakaraimensis (based on Mutchnik 122, US) D Matelea brevistipitata (based on Boom 9318, VEN) E Matelea stenopetala (based on Ek et al. 881, U) F Matelea stenopetala (based on Mori et al. 24547, US); Note difference in pubescence type between A-B (eglandular trichomes shown at arrows) and C-F (glandular capitate trichomes shown at arrows)." httpUri="https://binary.pensoft.net/fig/10179" pageId="2" pageNumber="29">Figures 1D</figureCitation>
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Gynostegial variation in the adaxially-pubescent-flowered members of the Matelea stenopetala complex. A Matelea trichopedicellata: i, flower, ii, coarsely pubescent pedicel, trichomes ca. 0.3 mm long (based on Daly et al. 1619, US) B Matelea hildegardiana (based on Davidse 4903, U) C Matelea pakaraimensis (based on Mutchnik 122, US) D Matelea brevistipitata (based on Boom 9318, VEN) E Matelea stenopetala (based on Ek et al. 881, U) F Matelea stenopetala (based on Mori et al. 24547, US). Note coronas at base of gynostegial columns sessile in A-C and raised off the surface of the corolla by a subtending stipe in D-F." httpUri="https://binary.pensoft.net/fig/10180" pageId="2" pageNumber="29">2D</figureCitation>
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Foliar variation in some adaxially-pubescent-flowered members of the Matelea stenopetala complex. A Matelea trichopedicellata (based on Daly et al. 1619, US) B Matelea hildegardiana (based on Davidse 4903, US) C Matelea brevistipitata (based on Boom 9318, VEN) D Matelea stenopetala (based on Ek et al. 881, U)." httpUri="https://binary.pensoft.net/fig/10181" pageId="2" pageNumber="29">3C</figureCitation>
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Illustration of the leaves, inflorescences, and flowers of Matelea brevistipitata and Matelea trichopedicellata. A Matelea brevistipitata (based on B. Stergios 12315, NY) B Matelea trichopedicellata (based on Daly et al. 1619, US). Scale bars are 4 cm (Ai &amp; Bi) and 0.4 mm (Aii &amp; Bii)." httpUri="https://binary.pensoft.net/fig/10182" pageId="2" pageNumber="29">4A</figureCitation>
<figureCitation captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Isotype of Matelea brevistipitata (Boom 9318, NY). Courtesy of the New York Botanical Garden." httpUri="https://binary.pensoft.net/fig/10183" pageId="2" pageNumber="29">5</figureCitation>
</paragraph>
</subSubSection>
<subSubSection pageId="2" pageNumber="29" type="latin">
<paragraph pageId="2" pageNumber="29">Latin.</paragraph>
<paragraph pageId="2" pageNumber="29">
<emphasis italics="true" pageId="2" pageNumber="29">A new species in the Matelea stenopetala complex, most similar to M. stenopetala, but differing in part by inflorescences with fewer flowers open at a time (usually 1(-2) vs. (2-) 3-4 (-5) in M. stenopetala), shorter peduncles (avg. 7 mm vs. avg. 15 mm in M. stenopetala), and stipe subtending the C(is) 0.12-0.22 mm [avg. 0.17 mm] tall (vs. 0.3-0.55 mm tall [avg. 0.37 mm] in M. stenopetala]</emphasis>
.
</paragraph>
</subSubSection>
<subSubSection pageId="2" pageNumber="29" type="type">
<paragraph pageId="2" pageNumber="29">Type.</paragraph>
<paragraph pageId="2" pageNumber="29">
<emphasis bold="true" pageId="2" pageNumber="29">VENEZUELA</emphasis>
. 
<normalizedToken originalValue="BOLÍVAR">BOLIVAR</normalizedToken>
: Cerro Guaiquinima, Base Camp (Camp 7) along the 
<normalizedToken originalValue="Río">Rio</normalizedToken>
Canapo, tropical lowland evergreen forest, near river, 
<geoCoordinate degrees="5" direction="north" orientation="latitude" precision="55555" value="5.0">5°N</geoCoordinate>
, 
<geoCoordinate degrees="63" direction="west" orientation="longitude" precision="55555" value="-63.0">63°W</geoCoordinate>
, 310 m, 3 Feb 1990 (fl), 
<emphasis italics="true" pageId="2" pageNumber="29">B. Boom 9318</emphasis>
(Holotype: VEN!; Isotype: NY!).
</paragraph>
</subSubSection>
<subSubSection lastPageId="3" lastPageNumber="30" pageId="2" pageNumber="29" type="description">
<paragraph pageId="2" pageNumber="29">Description.</paragraph>
<paragraph lastPageId="3" lastPageNumber="30" pageId="2" pageNumber="29">
<emphasis italics="true" pageId="2" pageNumber="29">Slender, woody vine</emphasis>
. 
<emphasis italics="true" pageId="2" pageNumber="29">Stems</emphasis>
glabrescent to moderately pubescent, pubescence in two lines, eglandular trichomes retrorse or spreading, of different size classes, largest ca. 0.5 mm long, smallest ca. 0.08 mm long, glandular capitate trichomes sparse to moderately dense, spreading, ca. 0.1 mm long. 
<emphasis italics="true" pageId="2" pageNumber="29">Leaf</emphasis>
blades lanceolate, ovate, elliptic, oblong, obovate, or oblanceolate, 5.2-11.5 
<normalizedToken originalValue="×">x</normalizedToken>
1.1-5.2 cm, with 5-7 pairs of lateral veins, adaxial surface glabrous, midvein glabrous to moderately pubescent, eglandular trichomes spreading, ca. 0.3 mm long, glandular capitate trichomes spreading, ca. 0.1 mm long, abaxial surface glabrous, midvein glabrous or sparsely pubescent, eglandular trichomes spreading, ca. 0.3 mm long, glandular capitate trichomes spreading, ca. 0.1 mm long, apices acuminate, bases cuneate to rounded, margins entire, colleters 3-4, lanceolate, 0.4-0.6 mm long; petioles 0.7-3.0 cm long, moderately pubescent, eglandular trichomes ubiquitous but most dense along adaxial ridge, spreading to antrorse, 0.4-0.5 mm long, glandular capitate trichomes ubiquitous, spreading, ca. 0.05 mm long. 
<emphasis italics="true" pageId="2" pageNumber="29">Inflorescence</emphasis>
racemiform, 3-5-flowered (1(-2) flowers open at a time); peduncles 1.9-10 (-16) mm, sparsely to moderately pubescent, pubescence ubiquitous, eglandular trichomes rare, spreading or antrorse, ca. 0.2-0.25 mm long, glandular capitate trichomes spreading, ca. 0.1 mm long; pedicels 6.3-15.0 mm long, sparsely to moderately pubescent, pubescence ubiquitous, eglandular trichomes rare, 
<pageBreakToken pageId="3" pageNumber="30" start="start">spreading</pageBreakToken>
or antrorse, ca. 0.1 mm long, glandular capitate trichomes spreading, ca. 0.05 mm long. 
<emphasis italics="true" pageId="3" pageNumber="30">Calyx</emphasis>
lobes linear to lanceolate, 1.1-2.0 
<normalizedToken originalValue="×">x</normalizedToken>
0.25-0.45 mm, strongly reflexed, adaxial surface glabrous, abaxial surface sparsely to moderately pubescent, eglandular trichomes spreading or antrorse, ca. 0.3 mm, glandular capitate trichomes spreading, 0.03-0.05 mm long, apices obtuse, margins entire; colleters 1 per sinus, lanceolate, ca. 0.2 mm tall. 
<emphasis italics="true" pageId="3" pageNumber="30">Corolla</emphasis>
green, greenish-yellow, or greenish-white (fide collectoris), subcampanulate at base, tube ca. 0.5-0.7 
<normalizedToken originalValue="×">x</normalizedToken>
0.8-0.9 mm, lobes imbricate in bud, lanceolate to oblong, apparently spreading, 3.0-4.1 
<normalizedToken originalValue="×">x</normalizedToken>
1.7-1.9 (-2.2) mm, not ocellate, adaxial surface pubescent, eglandular trichomes spreading, ca. 0.05-0.1 mm long, glandular-capitate trichomes absent, abaxial surface sparsely pubescent, eglandular trichomes rare, ca. 0.07 mm long, glandular capitate trichomes spreading, ca. 0.03 mm long, apices obtuse, margins entire. 
<emphasis italics="true" pageId="3" pageNumber="30">Faucal annulus</emphasis>
(corolline corona or Ca) absent. 
<emphasis italics="true" pageId="3" pageNumber="30">Gynostegial corona</emphasis>
of fused staminal (Cs) and interstaminal (Ci) parts, C(is) subtended by a short stipe, stipe 0.12-0.22 mm tall, Cs rising to meet the lower portion of the anther, rising segment at a distinctly acute angle relative to the base, 0.6-0.66 mm tall, margin entire, base somewhat swollen, entire or crenulate-lobate, ligule an apical ridge, not free, Ci unlobed, not ligulate. 
<emphasis italics="true" pageId="3" pageNumber="30">Style-head</emphasis>
1.2-1.4 (-1.7) mm diam, stipe 0.9-1.1 mm tall (incl. section subtending the C(is)), terminal style-head appendage absent. 
<emphasis italics="true" pageId="3" pageNumber="30">Pollinarium</emphasis>
: corpuscula ca. 0.12-0.17 mm long, caudicles present, pollinia oblong, 0.36-0.4 
<normalizedToken originalValue="×">x</normalizedToken>
0.15-0.25 mm. 
<emphasis italics="true" pageId="3" pageNumber="30">Follicles</emphasis>
unknown. 
<emphasis italics="true" pageId="3" pageNumber="30">Seeds</emphasis>
unknown.
</paragraph>
<caption httpUri="https://binary.pensoft.net/fig/10179" pageId="3" pageNumber="30" start="Figure 1" startId="F1">
<paragraph pageId="3" pageNumber="30">
<emphasis bold="true" pageId="3" pageNumber="30">Figure 1.</emphasis>
Abaxial corolla surface in the adaxially-pubescent-flowered members of the 
<taxonomicName class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="stenopetala">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea stenopetala</emphasis>
</taxonomicName>
complex. 
<emphasis bold="true" pageId="3" pageNumber="30">A</emphasis>
<taxonomicName authorityName="Krings &amp; Morillo" authorityYear="2012" class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="trichopedicellata">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea trichopedicellata</emphasis>
</taxonomicName>
(based on 
<emphasis italics="true" pageId="3" pageNumber="30">Daly et al. 1619</emphasis>
, US) 
<emphasis bold="true" pageId="3" pageNumber="30">B</emphasis>
<taxonomicName authorityName="G. Morillo" authorityYear="1988" class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="hildegardiana">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea hildegardiana</emphasis>
</taxonomicName>
(based on 
<emphasis italics="true" pageId="3" pageNumber="30">Liesner 23469</emphasis>
, U) 
<emphasis bold="true" pageId="3" pageNumber="30">C</emphasis>
<taxonomicName authorityName="Krings" authorityYear="2011" class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="pakaraimensis">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea pakaraimensis</emphasis>
</taxonomicName>
(based on 
<emphasis italics="true" pageId="3" pageNumber="30">Mutchnik 122</emphasis>
, US) 
<emphasis bold="true" pageId="3" pageNumber="30">D</emphasis>
<taxonomicName authorityName="Krings &amp; Morillo" authorityYear="2012" class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="brevistipitata">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea brevistipitata</emphasis>
</taxonomicName>
(based on 
<emphasis italics="true" pageId="3" pageNumber="30">Boom 9318</emphasis>
, VEN) 
<emphasis bold="true" pageId="3" pageNumber="30">E</emphasis>
<taxonomicName class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="stenopetala">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea stenopetala</emphasis>
</taxonomicName>
(based on 
<emphasis italics="true" pageId="3" pageNumber="30">Ek et al. 881</emphasis>
, U) 
<emphasis bold="true" pageId="3" pageNumber="30">F</emphasis>
<taxonomicName class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="stenopetala">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea stenopetala</emphasis>
</taxonomicName>
(based on 
<emphasis italics="true" pageId="3" pageNumber="30">Mori et al. 24547</emphasis>
, US); Note difference in pubescence type between 
<emphasis bold="true" pageId="3" pageNumber="30">A-B</emphasis>
(eglandular trichomes shown at arrows) and 
<emphasis bold="true" pageId="3" pageNumber="30">C-F</emphasis>
(glandular capitate trichomes shown at arrows).
</paragraph>
</caption>
<caption httpUri="https://binary.pensoft.net/fig/10180" pageId="3" pageNumber="30" start="Figure 2" startId="F2">
<paragraph pageId="3" pageNumber="30">
<emphasis bold="true" pageId="3" pageNumber="30">Figure 2.</emphasis>
Gynostegial variation in the adaxially-pubescent-flowered members of the 
<taxonomicName class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="stenopetala">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea stenopetala</emphasis>
</taxonomicName>
complex. 
<emphasis bold="true" pageId="3" pageNumber="30">A</emphasis>
<taxonomicName authorityName="Krings &amp; Morillo" authorityYear="2012" class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="trichopedicellata">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea trichopedicellata</emphasis>
</taxonomicName>
: i, flower, ii, coarsely pubescent pedicel, trichomes ca. 0.3 mm long (based on 
<emphasis italics="true" pageId="3" pageNumber="30">Daly et al. 1619</emphasis>
, US) 
<emphasis bold="true" pageId="3" pageNumber="30">B</emphasis>
<taxonomicName authorityName="G. Morillo" authorityYear="1988" class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="hildegardiana">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea hildegardiana</emphasis>
</taxonomicName>
(based on 
<emphasis italics="true" pageId="3" pageNumber="30">Davidse 4903</emphasis>
, U) 
<emphasis bold="true" pageId="3" pageNumber="30">C</emphasis>
<taxonomicName authorityName="Krings" authorityYear="2011" class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="pakaraimensis">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea pakaraimensis</emphasis>
</taxonomicName>
(based on 
<emphasis italics="true" pageId="3" pageNumber="30">Mutchnik 122</emphasis>
, US) 
<emphasis bold="true" pageId="3" pageNumber="30">D</emphasis>
<taxonomicName authorityName="Krings &amp; Morillo" authorityYear="2012" class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="brevistipitata">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea brevistipitata</emphasis>
</taxonomicName>
(based on 
<emphasis italics="true" pageId="3" pageNumber="30">Boom 9318</emphasis>
, VEN) 
<emphasis bold="true" pageId="3" pageNumber="30">E</emphasis>
<taxonomicName class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="stenopetala">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea stenopetala</emphasis>
</taxonomicName>
(based on 
<emphasis italics="true" pageId="3" pageNumber="30">Ek et al. 881</emphasis>
, U) 
<emphasis bold="true" pageId="3" pageNumber="30">F</emphasis>
<taxonomicName class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="stenopetala">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea stenopetala</emphasis>
</taxonomicName>
(based on 
<emphasis italics="true" pageId="3" pageNumber="30">Mori et al. 24547</emphasis>
, US). Note coronas at base of gynostegial columns sessile in A-C and raised off the surface of the corolla by a subtending stipe in 
<emphasis bold="true" pageId="3" pageNumber="30">D-F</emphasis>
.
</paragraph>
</caption>
<caption httpUri="https://binary.pensoft.net/fig/10181" pageId="3" pageNumber="30" start="Figure 3" startId="F3">
<paragraph pageId="3" pageNumber="30">
<emphasis bold="true" pageId="3" pageNumber="30">Figure 3.</emphasis>
Foliar variation in some adaxially-pubescent-flowered members of the 
<taxonomicName class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="stenopetala">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea stenopetala</emphasis>
</taxonomicName>
complex. 
<emphasis bold="true" pageId="3" pageNumber="30">A</emphasis>
<taxonomicName authorityName="Krings &amp; Morillo" authorityYear="2012" class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="trichopedicellata">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea trichopedicellata</emphasis>
</taxonomicName>
(based on 
<emphasis italics="true" pageId="3" pageNumber="30">Daly et al. 1619</emphasis>
, US) 
<emphasis bold="true" pageId="3" pageNumber="30">B</emphasis>
<taxonomicName authorityName="G. Morillo" authorityYear="1988" class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="hildegardiana">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea hildegardiana</emphasis>
</taxonomicName>
(based on 
<emphasis italics="true" pageId="3" pageNumber="30">Davidse 4903</emphasis>
, US) 
<emphasis bold="true" pageId="3" pageNumber="30">C</emphasis>
<taxonomicName authorityName="Krings &amp; Morillo" authorityYear="2012" class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="brevistipitata">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea brevistipitata</emphasis>
</taxonomicName>
(based on 
<emphasis italics="true" pageId="3" pageNumber="30">Boom 9318</emphasis>
, VEN) 
<emphasis bold="true" pageId="3" pageNumber="30">D</emphasis>
<taxonomicName class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="stenopetala">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea stenopetala</emphasis>
</taxonomicName>
(based on 
<emphasis italics="true" pageId="3" pageNumber="30">Ek et al. 881</emphasis>
, U).
</paragraph>
</caption>
<caption httpUri="https://binary.pensoft.net/fig/10182" pageId="3" pageNumber="30" start="Figure 4" startId="F4">
<paragraph pageId="3" pageNumber="30">
<emphasis bold="true" pageId="3" pageNumber="30">Figure 4.</emphasis>
Illustration of the leaves, inflorescences, and flowers of 
<taxonomicName authorityName="Krings &amp; Morillo" authorityYear="2012" class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="brevistipitata">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea brevistipitata</emphasis>
</taxonomicName>
and 
<taxonomicName authorityName="Krings &amp; Morillo" authorityYear="2012" class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="trichopedicellata">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea trichopedicellata</emphasis>
</taxonomicName>
. 
<emphasis bold="true" pageId="3" pageNumber="30">A</emphasis>
<taxonomicName authorityName="Krings &amp; Morillo" authorityYear="2012" class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="brevistipitata">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea brevistipitata</emphasis>
</taxonomicName>
(based on 
<emphasis italics="true" pageId="3" pageNumber="30">B. Stergios 12315</emphasis>
, NY) 
<emphasis bold="true" pageId="3" pageNumber="30">B</emphasis>
<taxonomicName authorityName="Krings &amp; Morillo" authorityYear="2012" class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="trichopedicellata">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea trichopedicellata</emphasis>
</taxonomicName>
(based on 
<emphasis italics="true" pageId="3" pageNumber="30">Daly et al. 1619</emphasis>
, US). Scale bars are 4 cm (Ai &amp; Bi) and 0.4 mm (Aii &amp; Bii).
</paragraph>
</caption>
<caption httpUri="https://binary.pensoft.net/fig/10183" pageId="3" pageNumber="30" start="Figure 5" startId="F5">
<paragraph pageId="3" pageNumber="30">
<emphasis bold="true" pageId="3" pageNumber="30">Figure 5.</emphasis>
Isotype of 
<taxonomicName authorityName="Krings &amp; Morillo" authorityYear="2012" class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="brevistipitata">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea brevistipitata</emphasis>
</taxonomicName>
(
<emphasis italics="true" pageId="3" pageNumber="30">Boom 9318</emphasis>
, NY). Courtesy of the New York Botanical Garden.
</paragraph>
</caption>
</subSubSection>
<subSubSection pageId="3" pageNumber="30" type="distribution">
<paragraph pageId="3" pageNumber="30">Distribution.</paragraph>
<paragraph pageId="3" pageNumber="30">
<taxonomicName authorityName="Krings &amp; Morillo" authorityYear="2012" class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="brevistipitata">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea brevistipitata</emphasis>
</taxonomicName>
isapparently endemic to the Guiana Shield in the Venezuelan states of Amazonas and 
<normalizedToken originalValue="Bolívar">Bolivar</normalizedToken>
. It is very likely also present in the portion of Amazonian Brazil bordering those states. The distributions of 
<taxonomicName authorityName="Krings &amp; Morillo" authorityYear="2012" class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="brevistipitata">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea brevistipitata</emphasis>
</taxonomicName>
and 
<taxonomicName class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="stenopetala">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea stenopetala</emphasis>
</taxonomicName>
appear to be largely parapatric. Both species occur in 
<normalizedToken originalValue="Bolívar">Bolivar</normalizedToken>
(Venezuela), but this represents the easternmost edge of the range of 
<taxonomicName authorityName="Krings &amp; Morillo" authorityYear="2012" class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="brevistipitata">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea brevistipitata</emphasis>
</taxonomicName>
and the westernmost edge of the range of 
<taxonomicName class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="stenopetala">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea stenopetala</emphasis>
</taxonomicName>
.
</paragraph>
</subSubSection>
<subSubSection pageId="3" pageNumber="30" type="ecology">
<paragraph pageId="3" pageNumber="30">Ecology.</paragraph>
<paragraph pageId="3" pageNumber="30">Known from swamp and riverine forests at low elevations, to 500 m.</paragraph>
</subSubSection>
<subSubSection pageId="3" pageNumber="30" type="phenology">
<paragraph pageId="3" pageNumber="30">Phenology.</paragraph>
<paragraph pageId="3" pageNumber="30">Collected in flower in April, May, October, and November.</paragraph>
</subSubSection>
<subSubSection pageId="3" pageNumber="30" type="etymology">
<paragraph pageId="3" pageNumber="30">Etymology.</paragraph>
<paragraph pageId="3" pageNumber="30">The specific epithet refers to the short stipe subtending the C(is).</paragraph>
</subSubSection>
<subSubSection pageId="3" pageNumber="30" type="conservation status">
<paragraph pageId="3" pageNumber="30">Conservation status.</paragraph>
<paragraph pageId="3" pageNumber="30">Currently, very little is known regarding the status of this species.</paragraph>
</subSubSection>
<subSubSection lastPageId="4" lastPageNumber="31" pageId="3" pageNumber="30" type="discussion">
<paragraph pageId="3" pageNumber="30">Discussion.</paragraph>
<paragraph lastPageId="4" lastPageNumber="31" pageId="3" pageNumber="30">
At a glance, 
<taxonomicName authorityName="Krings &amp; Morillo" authorityYear="2012" class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="brevistipitata">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea brevistipitata</emphasis>
</taxonomicName>
can be distinguished from 
<taxonomicName class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="stenopetala">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea stenopetala</emphasis>
</taxonomicName>
by the few-flowered inflorescences, suggesting divergence in reproductive biology. 
<taxonomicName class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="stenopetala">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea stenopetala</emphasis>
</taxonomicName>
usually displays inflorescences with 3-4 open flowers, whereas 
<taxonomicName authorityName="Krings &amp; Morillo" authorityYear="2012" class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="brevistipitata">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea brevistipitata</emphasis>
</taxonomicName>
displays inflorescences with only one open flower (rarely two) at a time. The floral display itself also differs between the two species. Although both exhibit calyx lobes strongly reflexed at anthesis, the lobes of 
<taxonomicName class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="stenopetala">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea stenopetala</emphasis>
</taxonomicName>
tend to be purple (sometimes also black or brown), presenting a striking contrast to the light colored corolla. In 
<taxonomicName authorityName="Krings &amp; Morillo" authorityYear="2012" class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="brevistipitata">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea brevistipitata</emphasis>
</taxonomicName>
, in contrast, the calyx is usually green (frequently drying an olive green). While the adaxial corolla surface is pubescent in 
<taxonomicName authorityName="Krings &amp; Morillo" authorityYear="2012" class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="brevistipitata">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea brevistipitata</emphasis>
</taxonomicName>
, it is only very rarely so in 
<taxonomicName class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="stenopetala">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea stenopetala</emphasis>
</taxonomicName>
. In fact, the vast majority of specimens of 
<taxonomicName class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="stenopetala">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea stenopetala</emphasis>
</taxonomicName>
seen exhibit corollas adaxially glabrous. It is worth noting that the rare exception (i.e., 
<emphasis italics="true" pageId="3" pageNumber="30">Mori 24547</emphasis>
, US) otherwise exhibits character states typical of 
<taxonomicName class="Magnoliopsida" family="Apocynaceae" genus="Matelea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Gentianales" pageId="3" pageNumber="30" phylum="Magnoliophyta" rank="species" species="stenopetala">
<emphasis italics="true" pageId="3" pageNumber="30">Matelea stenopetala</emphasis>
</taxonomicName>
, including long peduncles (13-16 
<pageBreakToken pageId="4" pageNumber="31" start="start">mm</pageBreakToken>
), inflorescences with up to five flowers open at a time, and long stipes subtending the C(is) (0.35 mm; 
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Gynostegial variation in the adaxially-pubescent-flowered members of the Matelea stenopetala complex. A Matelea trichopedicellata: i, flower, ii, coarsely pubescent pedicel, trichomes ca. 0.3 mm long (based on Daly et al. 1619, US) B Matelea hildegardiana (based on Davidse 4903, U) C Matelea pakaraimensis (based on Mutchnik 122, US) D Matelea brevistipitata (based on Boom 9318, VEN) E Matelea stenopetala (based on Ek et al. 881, U) F Matelea stenopetala (based on Mori et al. 24547, US). Note coronas at base of gynostegial columns sessile in A-C and raised off the surface of the corolla by a subtending stipe in D-F." httpUri="https://binary.pensoft.net/fig/10180" pageId="4" pageNumber="31">Fig. 2F</figureCitation>
).
</paragraph>
</subSubSection>
<subSubSection pageId="4" pageNumber="31" type="specimens examined">
<paragraph pageId="4" pageNumber="31">Specimens examined.</paragraph>
<paragraph pageId="4" pageNumber="31">
Venezuela: 
<emphasis bold="true" pageId="4" pageNumber="31">Amazonas</emphasis>
. Camino entre 
<normalizedToken originalValue="caño">cano</normalizedToken>
Gruya y el pueblo de Gruya, bosque 
<normalizedToken originalValue="higrófilo">higrofilo</normalizedToken>
<normalizedToken originalValue="macrotérmico">macrotermico</normalizedToken>
ligeramente alterado en la margen del 
<normalizedToken originalValue="río">rio</normalizedToken>
Orinoco, 100 m, 8 Apr 1978 (fl), 
<emphasis italics="true" pageId="4" pageNumber="31">G. Morillo 7382</emphasis>
(VEN); Dept. Atabapo, Salto Yureba, 
<normalizedToken originalValue="Caño">Cano</normalizedToken>
Yureba, Bajo Ventuari, 
<geoCoordinate degrees="4" direction="north" minutes="3" orientation="latitude" precision="925" value="4.05">4°3'N</geoCoordinate>
, 
<geoCoordinate degrees="66" direction="west" minutes="1" orientation="longitude" precision="925" value="-66.01667">66°1'W</geoCoordinate>
, 120-150 m, 24 Oct-4 Nov 1981 (fl), 
<emphasis italics="true" pageId="4" pageNumber="31">
F. Delascio &amp; F. 
<normalizedToken originalValue="Guánchez">Guanchez</normalizedToken>
10968
</emphasis>
(MER,VEN); Dept. Atures, carretera Pto. Ayachucho-Samariapo, selva 
<normalizedToken originalValue="húmeda">humeda</normalizedToken>
caliente, 13 Jan 1982 (fl), 
<emphasis italics="true" pageId="4" pageNumber="31">B. Stergios 3183</emphasis>
(VEN); Dept. 
<normalizedToken originalValue="Río">Rio</normalizedToken>
Negro, between 
<normalizedToken originalValue="Río">Rio</normalizedToken>
Marawinuma at base of Neblina (
<geoCoordinate degrees="0" direction="north" minutes="50" orientation="latitude" precision="925" value="0.8333333">0°50'N</geoCoordinate>
, 
<geoCoordinate degrees="66" direction="west" minutes="9" orientation="longitude" precision="925" value="-66.15">66°9'W</geoCoordinate>
) and 
<normalizedToken originalValue="Río">Rio</normalizedToken>
<normalizedToken originalValue="Baría">Baria</normalizedToken>
, in swamp forest, a heavily overgrown series of small channels with black water, 8 May 1984 (fl), 
<emphasis italics="true" pageId="4" pageNumber="31">W.W. Thomas, A. Gentry &amp; B. Stein 3401</emphasis>
(VEN, NY). 
<emphasis bold="true" pageId="4" pageNumber="31">
<normalizedToken originalValue="Bolívar">Bolivar</normalizedToken>
</emphasis>
. Dept. Roscio, El Abismo, al norte del 
<normalizedToken originalValue="río">rio</normalizedToken>
<normalizedToken originalValue="Icabarú">Icabaru</normalizedToken>
, bosque 
<normalizedToken originalValue="húmedo">humedo</normalizedToken>
<normalizedToken originalValue="macrotérmico">macrotermico</normalizedToken>
, 500 m, Oct 1985 (fl), 
<emphasis italics="true" pageId="4" pageNumber="31">F. Delascio 12503</emphasis>
(VEN); 
<normalizedToken originalValue="Expedición">Expedicion</normalizedToken>
Proyecto I.R.N.R.S. a la cuenca alta del 
<normalizedToken originalValue="Río">Rio</normalizedToken>
Caura (Hoja NB-20-14), selvas 
<normalizedToken originalValue="ribereñas">riberenas</normalizedToken>
del 
<normalizedToken originalValue="Caño">Cano</normalizedToken>
El Pavo hasta arriba de la boca del 
<normalizedToken originalValue="Caño">Cano</normalizedToken>
Maravene, 
<geoCoordinate degrees="4" direction="north" minutes="16" orientation="latitude" precision="925" value="4.266667">4°16'N</geoCoordinate>
, 
<geoCoordinate degrees="64" direction="west" minutes="9" orientation="longitude" precision="925" value="-64.15">64°9'W</geoCoordinate>
, 13-14 Apr 1988 (fl), 
<emphasis italics="true" pageId="4" pageNumber="31">B. Stergios 12315</emphasis>
(NY, US, VEN); Dist. Piar, 
<normalizedToken originalValue="Río">Rio</normalizedToken>
<normalizedToken originalValue="Aparamán">Aparaman</normalizedToken>
, at rapids of 
<normalizedToken originalValue="Yuray-merú">Yuray-meru</normalizedToken>
, tributary of 
<normalizedToken originalValue="Río">Rio</normalizedToken>
Acanan, SW base of Amaruay-tepui, E of Auyan-tepui, W of Aparaman-tepui, small tributary or river, densely forested with trees 20-30 m high, 
<geoCoordinate degrees="5" direction="north" minutes="55" orientation="latitude" precision="925" value="5.9166665">5°55'N</geoCoordinate>
, 
<geoCoordinate degrees="62" direction="west" minutes="15" orientation="longitude" precision="925" value="-62.25">62°15'W</geoCoordinate>
, 500 m, 21 Apr 1986 (fl), 
<emphasis italics="true" pageId="4" pageNumber="31">B. Holst &amp; R. Liesner 2661</emphasis>
(VEN, MO).
</paragraph>
</subSubSection>
</treatment>
</document>