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<document ID-CLB-Dataset="27209" ID-DOI="http://dx.doi.org/10.3897/phytokeys.107.26548" ID-GBIF-Dataset="b09b328e-de27-4071-8af6-eec29dc3b1df" ID-PMC="PMC6160804" ID-Pensoft-Pub="1314-2003-107-1" ID-Pensoft-UUID="686CFF85FFADFFEAC033443CF54BFFFC" ID-PubMed="30271249" ID-Zenodo-Dep="1346433" ModsDocAuthor="" ModsDocDate="2018" ModsDocID="1314-2003-107-1" ModsDocOrigin="PhytoKeys 107" ModsDocTitle="A revision of Dissochaeta (Melastomataceae, Dissochaeteae)" checkinTime="1555330651054" checkinUser="pensoft" docAuthor="Kartonegoro, Abdulrokhman, Veldkamp, Jan Frits, Hovenkamp, Peter &amp; Welzen, Peter van" docDate="2018" docId="ED166287BF26970A78DC124C5665C380" docLanguage="en" docName="PhytoKeys 107: 1-178" docOrigin="PhytoKeys 107" docSource="http://dx.doi.org/10.3897/phytokeys.107.26548" docTitle="Dissochaeta rectandra Kartonegoro &amp; Veldkamp &amp; Hovenkamp &amp; Welzen 2018, sp. nov." docType="treatment" docVersion="8" id="686CFF85FFADFFEAC033443CF54BFFFC" lastPageNumber="1" masterDocId="686CFF85FFADFFEAC033443CF54BFFFC" masterDocTitle="A revision of Dissochaeta (Melastomataceae, Dissochaeteae)" masterLastPageNumber="178" masterPageNumber="1" pageNumber="1" updateTime="1732647791036" updateUser="ExternalLinkService">
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<mods:title id="CE02E4FD29AC5708091F8FE5824E606E">A revision of Dissochaeta (Melastomataceae, Dissochaeteae)</mods:title>
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<mods:namePart id="51DEC71D01A26C466E3627B18782FE56">Kartonegoro, Abdulrokhman</mods:namePart>
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<mods:namePart id="17F095A26A4CAF17AE685654BCDCFA0A">Veldkamp, Jan Frits</mods:namePart>
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<mods:namePart id="45E40CC17C48683BF33D6E28DFF54A38">Hovenkamp, Peter</mods:namePart>
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<mods:namePart id="DE9B0B92CA01764BCD352B3234F45606">Welzen, Peter van</mods:namePart>
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<mods:title id="9D6B07BE8E75B5BB48A56FEE97FD9B3B">PhytoKeys</mods:title>
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<mods:date id="D2141279C8597C0D8E98BC09EF283A26">2018</mods:date>
<mods:detail id="5FC4D2DC587326F166185E1DDB79C88C" type="volume">
<mods:number id="F6594232090491DB7792D3288B910D59">107</mods:number>
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<mods:classification id="900536843851521D97DC58C2A4D7452E">journal article</mods:classification>
<mods:identifier id="D6723CA71248674D8E6BC30928297789" type="DOI">http://dx.doi.org/10.3897/phytokeys.107.26548</mods:identifier>
<mods:identifier id="E658F13495871CC5C276DFB0AFD7DCE4" type="Pensoft-Pub">1314-2003-107-1</mods:identifier>
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<treatment id="ED166287BF26970A78DC124C5665C380" ID-GBIF-Taxon="156201478" LSID="urn:lsid:plazi:treatment:ED166287BF26970A78DC124C5665C380" httpUri="http://treatment.plazi.org/id/ED166287BF26970A78DC124C5665C380" lastPageNumber="1" pageId="0" pageNumber="1" scope_family="Melastomataceae">
<subSubSection id="2D3E0AB21AC738D64D05A9F70830D708" pageId="0" pageNumber="1" type="nomenclature">
<paragraph id="AA8B2A7AF253BB95CBCA57DEA18C22F0" pageId="0" pageNumber="1">
45.
<taxonomicName id="1F25B79744B6069A56781C67FB90BAB8" ID-CoL="36VXG" LSID="ED166287-BF26-970A-78DC-124C5665C380" authority="Karton." authorityName="Kartonegoro &amp; Veldkamp &amp; Hovenkamp &amp; Welzen" authorityYear="2018" class="Magnoliopsida" family="Melastomataceae" genus="Dissochaeta" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Dissochaeta rectandra" order="Myrtales" pageId="0" pageNumber="1" phylum="Tracheophyta" rank="species" species="rectandra" status="sp. nov.">Dissochaeta rectandra Karton.</taxonomicName>
<taxonomicNameLabel id="8DA4C5CFB476E92F3ABA5BCF3FF9DA95" pageId="0" pageNumber="1">sp. nov.</taxonomicNameLabel>
<figureCitation id="0ACDF870358CD7F4FFEB84FDB2B0B3B0" captionStart="Figure 25" captionStartId="F49" captionText="Figure 25. Dissochaeta rectandra a habit b inflorescence c hypanthium d open flower e ovary f alternipetalous stamens g oppositipetalous stamens h fruit. [drawn from Carrick 1606 (L)." figureDoi="10.3897/phytokeys.107.26548.figure25" httpUri="https://binary.pensoft.net/fig/222143" pageId="0" pageNumber="1">Fig. 25</figureCitation>
<figureCitation id="357574E01BC2C12654CC0B65230AF60D" captionStart="Map 24" captionStartId="F47" captionText="Map 24. Distribution of D. pubescens (●), D. rectandra (■) and D. vacillans (▲)." figureDoi="10.3897/phytokeys.107.26548.map24" httpUri="https://binary.pensoft.net/fig/222141" pageId="0" pageNumber="1">, Map 24</figureCitation>
</paragraph>
</subSubSection>
<subSubSection id="BBC6469DEE594ED372C0D7893042A9A6" pageId="0" pageNumber="1" type="materials_examined">
<paragraph id="BE662ED2C2B8DA18AEA183E6EF4B5897" pageId="0" pageNumber="1">Type.</paragraph>
<paragraph id="CF05D8DCC04DDE94AB7A1EAAD2926BDA" pageId="0" pageNumber="1">
Malaysia. Pahang:
<normalizedToken id="0C714A6A9D6E92EBBBCB1D89C60A08FF" originalValue="Frasers">Fraser's</normalizedToken>
Hill, 3 Aug 1967, J.C. Carrick 1606 (holotype L [L.2533494]!; isotypes: K!, KLU
<emphasis id="0D5B86C982217FAD016067538552385B" italics="true" pageId="0" pageNumber="1">n.v.</emphasis>
, L [L.2533495]!, SING
<emphasis id="C0FA27437D60974FB4553182462C8091" italics="true" pageId="0" pageNumber="1">n.v.</emphasis>
).
</paragraph>
<caption id="782C36DB4798C90D73594EDE1C3F79FB" ID-Zenodo-Dep="1346471" doi="10.3897/phytokeys.107.26548.figure25" httpUri="https://binary.pensoft.net/fig/222143" pageId="0" pageNumber="1" start="Figure 25" startId="F49">
<paragraph id="2CA0C82CD157FD99DAD83FD2E4AA4CEA" pageId="0" pageNumber="1">
<emphasis id="38198D1B6B2C2AA81150972EA90F3750" bold="true" pageId="0" pageNumber="1">Figure 25.</emphasis>
<taxonomicName id="4EA74F2D125DC534DD4D4EDCB7B80D22" class="Magnoliopsida" family="Melastomataceae" genus="Dissochaeta" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Dissochaeta rectandra" order="Myrtales" pageId="0" pageNumber="1" phylum="Tracheophyta" rank="species" species="rectandra">
<emphasis id="8B28C2461CC23C659DCE6FBFBCBB2147" italics="true" pageId="0" pageNumber="1">Dissochaeta rectandra</emphasis>
</taxonomicName>
<emphasis id="E2FDDF57904D901AA49BC1E50838FDE8" bold="true" pageId="0" pageNumber="1">a</emphasis>
habit
<emphasis id="1914A74556C30451F9CF7E5391B9865D" bold="true" pageId="0" pageNumber="1">b</emphasis>
inflorescence
<emphasis id="565EF58D9BF94E396DD252CF4AE1F241" bold="true" pageId="0" pageNumber="1">c</emphasis>
hypanthium
<emphasis id="F73AEF265349D32CE9B01FBCA8CD0780" bold="true" pageId="0" pageNumber="1">d</emphasis>
open flower
<emphasis id="EEAB7005CC9E7BE65BDA4B9F2A4424A2" bold="true" pageId="0" pageNumber="1">e</emphasis>
ovary
<emphasis id="BAD1B167B8DEF5E0063F39D6931E8DFE" bold="true" pageId="0" pageNumber="1">f</emphasis>
alternipetalous stamens
<emphasis id="44F3AADA86FE59919494DF3AF5213BED" bold="true" pageId="0" pageNumber="1">g</emphasis>
oppositipetalous stamens
<emphasis id="F6D5E1A7EE7CE3BADEA687EAD21050E4" bold="true" pageId="0" pageNumber="1">h</emphasis>
fruit. [drawn from Carrick 1606 (L).
</paragraph>
</caption>
</subSubSection>
<subSubSection id="9477CDB3B002F3EE98E8445094A9126B" pageId="0" pageNumber="1" type="diagnosis">
<paragraph id="40994829E42944CF6E26159B6E40B8DF" pageId="0" pageNumber="1">Diagnosis.</paragraph>
<paragraph id="18496EFECDAEAAAB690BF9F5C8DAF7DA" pageId="0" pageNumber="1">
Resembles
<taxonomicName id="DDF2A0E6EA8820B413A0A8A5EAA81D9A" class="Magnoliopsida" family="Melastomataceae" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="D. bakhuizenii" order="Myrtales" pageId="0" pageNumber="1" phylum="Tracheophyta" rank="species" species="bakhuizenii">
<emphasis id="8EC0D2D4F54294966B4C56F0EE315E59" italics="true" pageId="0" pageNumber="1">D. bakhuizenii</emphasis>
</taxonomicName>
Veldkamp. Leaf blade margin entire or thinly serrate with glabrous to sparsely stellate punctation below. Hypanthium campanulate-angular, 6-8
<normalizedToken id="EFFD8B6E36599CE9E31B850797CB7923" originalValue="×">x</normalizedToken>
3-3.5 mm, glabrescent to sparsely stellate-puberulous, calyx lobes truncate with 4 small undulate points, 1-1.5 mm long, glabrous outside, stellate-furfuraceous inside. Stamens 8, subequal, filaments and anthers straight upwards, alternipetalous stamens with triangular basal crest and paired, filiform, lateral appendages, oppositipetalous stamens with ligular basal crest and paired filiform appendages. Fruits with mammiform apex.
</paragraph>
</subSubSection>
<subSubSection id="685F38AB022FB29A41BE73636602E7C0" pageId="0" pageNumber="1" type="description">
<paragraph id="18059CF8E84D4DEF5EA88B1E09C3BBF0" pageId="0" pageNumber="1">Description.</paragraph>
<paragraph id="AADCE8A849E9A5852CC97A4269F5CEB2" pageId="0" pageNumber="1">
Climbing up to 7.5 m. Branchlets terete, 3-5 mm in diameter, glabrescent; nodes swollen, interpetiolar ridge distinct with annular crest-like ridge; internodes 5-12 cm long. Leaves: petioles flattened, 10-23 mm long, stellate-punctate; blades elliptic or ovate-elliptic, 9.5-18
<normalizedToken id="B520F4184AC4A570EE25E49844CC9F5B" originalValue="×">x</normalizedToken>
5-9.2 cm, membranous, base rounded to slightly cuneate, margin entire or thinly serrate, apex acuminate, tip 1-2 cm long; nervation with 1-2 pairs of lateral nerves and 1 pair of intramarginal nerves; adaxially glabrous, dark green, abaxially glabrous to brownish stellate-punctate, maroonish and glabrous when young. Inflorescences terminal, up to 40 cm long, many-flowered; main axis terete, glabrescent to sparsely stellate-puberulous; primary axes up to 33 cm long with 5 or 6 nodes, secondary axes up to 10 cm long with 3 or 4 nodes, tertiary axes 1-2.5 cm long with 1 or 2 nodes, quarternary axes when developed up to 0.8 cm long with 1 node; bracts linear, 2-2.5 mm long, stellate-furfuraceous, caducous; bracteoles subulate, 1-1.5 mm long, stellate-furfuraceous; pedicels stellate-furfuraceous, 4-6 mm long in central flowers, 2-3 mm long in lateral flowers. Hypanthium campanulate-angular, 6-8
<normalizedToken id="94348BA672D309DE1BA2638F461666BC" originalValue="×">x</normalizedToken>
3-3.5 mm, glabrescent to sparsely stellate-puberulous; calyx lobes truncate with 4 small undulate points, 1-1.5 mm long, glabrous outside, stellate-furfuraceous inside; petal buds conical, 4-9
<normalizedToken id="9BFAAB44DFDD3147C6425E82F5A13571" originalValue="×">x</normalizedToken>
2-3 mm, glabrous; mature petals obovate to suborbicular, 10-11
<normalizedToken id="93EADF27558DF402C4470A9318A3167A" originalValue="×">x</normalizedToken>
8-9 mm, base clawed, margin ciliate, apex rounded, glabrous, pink to dark purple. Stamens 8, subequal, filaments straight, white pinkish; alternipetalous stamens with 8-9 mm long filaments, anthers lanceolate, thecae 7-8 mm long, straight, yellow, pedoconnective 1.5-2 mm long, basal crests triangular, 1-1.5 mm long, acute, lateral appendages prolonged from basal crest, paired, filiform, 2-2.5 mm long; oppositipetalous stamens with filaments 7-8 mm long, bent at top, anthers oblong-lanceolate, thecae 6-7 mm long, straight, yellow, basal crest ligular, 1-1.5 mm long, apex narrow, lateral appendages paired, filiform, 2-3 mm long. Ovary half as long as hypanthium, apex pubescent, bristly; style 12-13 mm long, straight, curved at top, glabrous; stigma minute, capitate; extra-ovarial chambers 8, extending from the middle to the base of the ovary. Fruits urceolate, 8-10
<normalizedToken id="2E4EE960F731C19790AA04B0565F368D" originalValue="×">x</normalizedToken>
6-9 mm, apex mammiform, bristly, rest glabrous; calyx lobes persistent, erect. Seeds ca. 0.5 mm long.
</paragraph>
</subSubSection>
<subSubSection id="01F246470B74433FDA4436BA01CE5028" pageId="0" pageNumber="1" type="distribution">
<paragraph id="5E7FE3BDB70087D12407F3FEF5264D41" pageId="0" pageNumber="1">Distribution.</paragraph>
<paragraph id="BF40E7E93FB2FDB3B30833AFA8689341" pageId="0" pageNumber="1">Peninsular Malaysia (Selangor and Pahang).</paragraph>
</subSubSection>
<subSubSection id="90EC436AB57B86809B2B63DC7F5DC83F" pageId="0" pageNumber="1" type="ecology">
<paragraph id="9EB791A9A62EE7D188AADFFE1FC8DD93" pageId="0" pageNumber="1">Ecology and habitat.</paragraph>
<paragraph id="6FF07F0728E57C87691C69A8D4D64142" pageId="0" pageNumber="1">Montane forest, open areas along road sides at 1280-1800 m elevation.</paragraph>
</subSubSection>
<subSubSection id="7FA8694FD0BE0F899D0D6DEDF0637350" pageId="0" pageNumber="1" type="etymology">
<paragraph id="FB7C2F4F03E724FAFF2AAC774715E413" pageId="0" pageNumber="1">Etymology.</paragraph>
<paragraph id="F66564AC740536DE4DFE155524474070" pageId="0" pageNumber="1">The species is named after the orientation and shape of its stamens, erect, straight upwards when mature.</paragraph>
</subSubSection>
<subSubSection id="3CA35EE9B4E4AA36C54AF27952C99114" pageId="0" pageNumber="1" type="notes">
<paragraph id="35BDD0A22E89818FF3EAB1EE1777D19B" pageId="0" pageNumber="1">Note.</paragraph>
<paragraph id="818FE7F6E78D12081B52E5BF3AA0E4AD" pageId="0" pageNumber="1">
<taxonomicName id="3D73252FE4D13FC4A59C4E947D440A12" class="Magnoliopsida" family="Melastomataceae" genus="Dissochaeta" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Dissochaeta rectandra" order="Myrtales" pageId="0" pageNumber="1" phylum="Tracheophyta" rank="species" species="rectandra">
<emphasis id="6D786B8BC8476F7C1FB770F22ED1930B" italics="true" pageId="0" pageNumber="1">Dissochaeta rectandra</emphasis>
</taxonomicName>
resembles
<taxonomicName id="33B308708FEC7DE058274779DB8E34D9" class="Magnoliopsida" family="Melastomataceae" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="D. bakhuizenii" order="Myrtales" pageId="0" pageNumber="1" phylum="Tracheophyta" rank="species" species="bakhuizenii">
<emphasis id="E2F3FFD9626783B5697CB61CFC71CAEC" italics="true" pageId="0" pageNumber="1">D. bakhuizenii</emphasis>
</taxonomicName>
in having 8 fertile stamens, a triangular basal crest (alternipetalous) and ligular basal crest (oppositipetalous).
<taxonomicName id="62E29DC4CF93B6FF26F0ADC8B9602B06" class="Magnoliopsida" family="Melastomataceae" genus="Dissochaeta" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Dissochaeta rectandra" order="Myrtales" pageId="0" pageNumber="1" phylum="Tracheophyta" rank="species" species="rectandra">
<emphasis id="205677D6607413D96AF9162EC063BC97" italics="true" pageId="0" pageNumber="1">Dissochaeta rectandra</emphasis>
</taxonomicName>
has thinly serrate leaf margins, large flowers and longer lateral appendages on the stamens (vs. entire margins of leaf blades, smaller flowers and short to absent lateral appendages in
<taxonomicName id="463C1391BFC8B3110DD522591B1C452B" class="Magnoliopsida" family="Melastomataceae" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="D. bakhuizenii" order="Myrtales" pageId="0" pageNumber="1" phylum="Tracheophyta" rank="species" species="bakhuizenii">
<emphasis id="AF41011102F30EF12095D457D5BADECF" italics="true" pageId="0" pageNumber="1">D. bakhuizenii</emphasis>
</taxonomicName>
). This species is restricted to the montane forest of
<normalizedToken id="CD3560CE7B71724F8ED53F4C2D97AAAD" originalValue="Frasers">Fraser's</normalizedToken>
Hill (Pahang) and the Genting Highlands (Selangor).
</paragraph>
</subSubSection>
<subSubSection id="F57F5C1AD212678665F1639D63279479" pageId="0" pageNumber="1" type="materials_examined">
<paragraph id="6AC9EC8F4D417C6EBCBFCCD9B44E8192" pageId="0" pageNumber="1">Specimens examined.</paragraph>
<paragraph id="57FF37F7D46939EF331AA2173743F596" pageId="0" pageNumber="1">
<emphasis id="A6C4DA294A19488906737F0D53D4C976" bold="true" pageId="0" pageNumber="1">MALAYSIA. Pahang</emphasis>
:
<normalizedToken id="670E13160486F27A180BFA2D2C9D2DB2" originalValue="Frasers">Fraser's</normalizedToken>
Hill, 3 Aug 1967, J.C. Carrick 1606 (K, L);
<emphasis id="3D373A7C206BF96C2DBFA6E7F5AE7AF2" italics="true" pageId="0" pageNumber="1">Ibid.</emphasis>
, Richmond, 1280 m, 16 Apr 1955, J.W. Purseglove 4112 (L).
<emphasis id="5F8C6EA60ED3F02FF01FA07A541FB653" bold="true" pageId="0" pageNumber="1">Selangor</emphasis>
: Genting Highlands, Gunong Ulu Kali, 1800 m, 3 Jun 1978, J.F. Maxwell 78-307 (L);
<emphasis id="D42FC1AE8D6F2DB370CF6F089660E846" italics="true" pageId="0" pageNumber="1">Ibid.</emphasis>
, 1500 m, 3 Jun 1978, J.F. Maxwell 78-312 (L).
</paragraph>
</subSubSection>
</treatment>
</document>