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<document ID-DOI="http://doi.org/10.5281/zenodo.5186559" ID-ISSN="1639-4798" ID-Zenodo-Dep="5186559" approvalRequired="3" approvalRequired_for_textStreams="3" checkinTime="1628768232888" checkinUser="carolina" docAuthor="Breteler, F. J." docDate="2005" docId="03D58795FF97EA1CA7EECA0E925572EB" docLanguage="en" docName="Adansonia.27.2.231-234.pdf" docOrigin="Adansonia (3) 27 (2)" docStyle="DocumentStyle:7E81836D30F26F6CECD5F7ABFAAC2CA1.1:Adansonia.2005-2008.journal_article" docStyleId="7E81836D30F26F6CECD5F7ABFAAC2CA1" docStyleName="Adansonia.2005-2008.journal_article" docStyleVersion="1" docTitle="Dichapetalum petaloideum Breteler 2005, sp. nov." docType="treatment" docVersion="2" lastPageId="3" lastPageNumber="234" masterDocId="FFECFFEDFF97EA1FA54ACF13933E7375" masterDocTitle="Novitates Gabonenses 53. A curious new species of Dichapetalum (Dichapetalaceae) from Gabon" masterLastPageNumber="234" masterPageNumber="231" pageId="0" pageNumber="231" updateTime="1628768942161" updateUser="ExternalLinkService" zenodo-license-document="CC-BY-4.0" zenodo-license-figures="CC-BY-4.0">
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo>
<mods:title>Novitates Gabonenses 53. A curious new species of Dichapetalum (Dichapetalaceae) from Gabon</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Breteler, F. J.</mods:namePart>
</mods:name>
<mods:typeOfResource>text</mods:typeOfResource>
<mods:relatedItem type="host">
<mods:titleInfo>
<mods:title>Adansonia</mods:title>
</mods:titleInfo>
<mods:part>
<mods:date>2005</mods:date>
<mods:detail type="series">
<mods:title>3</mods:title>
</mods:detail>
<mods:detail type="volume">
<mods:number>27</mods:number>
</mods:detail>
<mods:detail type="issue">
<mods:number>2</mods:number>
</mods:detail>
<mods:extent unit="page">
<mods:start>231</mods:start>
<mods:end>234</mods:end>
</mods:extent>
</mods:part>
</mods:relatedItem>
<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">http://doi.org/10.5281/zenodo.5186559</mods:identifier>
<mods:identifier type="ISSN">1639-4798</mods:identifier>
<mods:identifier type="Zenodo-Dep">5186559</mods:identifier>
</mods:mods>
<treatment LSID="urn:lsid:plazi:treatment:03D58795FF97EA1CA7EECA0E925572EB" httpUri="http://treatment.plazi.org/id/03D58795FF97EA1CA7EECA0E925572EB" lastPageId="3" lastPageNumber="234" pageId="0" pageNumber="231">
<subSubSection pageId="0" pageNumber="231" type="nomenclature">
<paragraph blockId="0.[676,1180,1309,1334]" box="[676,1180,1309,1334]" pageId="0" pageNumber="231">
<heading box="[676,1180,1309,1334]" centered="true" fontSize="11" level="2" pageId="0" pageNumber="231" reason="7">
<taxonomicName authority="Breteler" authorityName="Breteler" authorityYear="2005" box="[676,1079,1309,1334]" class="Magnoliopsida" family="Dichapetalaceae" genus="Dichapetalum" kingdom="Plantae" order="Malpighiales" pageId="0" pageNumber="231" phylum="Tracheophyta" rank="species" species="petaloideum" status="sp. nov.">
<emphasis bold="true" box="[676,990,1309,1334]" pageId="0" pageNumber="231">Dichapetalum petaloideum</emphasis>
Breteler
</taxonomicName>
,
<emphasis bold="true" box="[1093,1180,1309,1334]" pageId="0" pageNumber="231">
<taxonomicNameLabel box="[1093,1180,1309,1334]" pageId="0" pageNumber="231" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
</heading>
</paragraph>
<paragraph blockId="0.[676,1210,1367,1440]" pageId="0" pageNumber="231">
Dichapetali crassifolii Chodat
<emphasis italics="true" pageId="0" pageNumber="231">optime affine de folio inflorescentiaque, sed singulatim in genere petalis indivisis crassis valvatis et pilosis.</emphasis>
</paragraph>
</subSubSection>
<subSubSection lastPageId="2" lastPageNumber="233" pageId="0" pageNumber="231" type="description">
<paragraph blockId="0.[676,1209,1473,1572]" pageId="0" pageNumber="231">
<materialsCitation box="[703,1201,1473,1496]" collectionCode="TYPUS" collectorName="Wieringa &amp; van Nek" country="Gabon" location="Gabon" pageId="0" pageNumber="231" specimenCount="1" typeStatus="holotype">
<typeStatus box="[703,770,1473,1496]" pageId="0" pageNumber="231">TYPUS</typeStatus>
. —
<emphasis box="[822,1111,1473,1496]" italics="true" pageId="0" pageNumber="231">
<collectorName box="[822,919,1473,1496]" pageId="0" pageNumber="231">Wieringa</collectorName>
&amp;
<collectorName box="[958,1047,1473,1496]" pageId="0" pageNumber="231">van Nek</collectorName>
3284
</emphasis>
,
<collectingCountry box="[1128,1201,1473,1496]" name="Gabon" pageId="0" pageNumber="231">Gabon</collectingCountry>
</materialsCitation>
, Echira, ±
<geoCoordinate box="[771,825,1499,1522]" degrees="2" direction="south" minutes="3" orientation="latitude" pageId="0" pageNumber="231" precision="925" value="-2.05">
2°
<docSeriesInJournal box="[792,805,1499,1522]" pageId="0" pageNumber="231">3</docSeriesInJournal>
’S
</geoCoordinate>
,
<geoCoordinate box="[838,908,1499,1522]" degrees="9" direction="east" minutes="48" orientation="longitude" pageId="0" pageNumber="231" precision="925" value="9.8">9°48’E</geoCoordinate>
, alt. ±
<quantity box="[975,1029,1499,1522]" metricMagnitude="1" metricUnit="m" metricValue="3.0" pageId="0" pageNumber="231" unit="m" value="30.0">30 m</quantity>
, fl.
<date box="[1070,1209,1499,1522]" pageId="0" pageNumber="231" value="1994-11-25">25 Nov. 1994</date>
(holo-,
<materialsCitation collectionCode="WAG, BR, C, G, K, LBV, LISC, MA, MO, MPU, NY, P, UPS" country="United States of America" location="US" pageId="0" pageNumber="231" specimenCount="1" typeStatus="holotype">
<collectionCode box="[754,814,1524,1547]" country="Netherlands" httpUri="http://biocol.org/urn:lsid:biocol.org:col:15578" lsid="urn:lsid:biocol.org:col:15578" name="Wageningen University" pageId="0" pageNumber="231" type="Herbarium">WAG</collectionCode>
; iso-,
<collectionCode box="[882,914,1524,1547]" country="Brazil" name="Embrapa Agrobiology Diazothrophic Microbial Culture Collection" pageId="0" pageNumber="231">BR</collectionCode>
,
<collectionCode box="[930,948,1524,1547]" country="Denmark" name="University of Copenhagen" pageId="0" pageNumber="231" type="Herbarium">C</collectionCode>
,
<collectionCode box="[963,982,1524,1547]" country="Switzerland" lsid="urn:lsid:biocol.org:col:15706" name="Conservatoire et Jardin botaniques de la Ville de Genève" pageId="0" pageNumber="231" type="Herbarium">G</collectionCode>
,
<collectionCode box="[998,1015,1524,1547]" country="United Kingdom" lsid="urn:lsid:biocol.org:col:15867" name="Royal Botanic Gardens" pageId="0" pageNumber="231" type="Herbarium">K</collectionCode>
,
<collectionCode box="[1030,1077,1524,1547]" country="Gabon" httpUri="http://biocol.org/urn:lsid:biocol.org:col:14850" lsid="urn:lsid:biocol.org:col:14850" name="CENAREST" pageId="0" pageNumber="231" type="Herbarium">LBV</collectionCode>
,
<collectionCode box="[1093,1147,1524,1547]" country="Portugal" httpUri="http://biocol.org/urn:lsid:biocol.org:col:15078" lsid="urn:lsid:biocol.org:col:15078" name="Jardim Botânico Tropical, Instituto de Investigação Científica Tropical" pageId="0" pageNumber="231" type="Herbarium">LISC</collectionCode>
,
<collectionCode box="[1163,1202,1524,1547]" country="Spain" lsid="urn:lsid:biocol.org:col:15682" name="Real Jardín Botánico" pageId="0" pageNumber="231" type="Herbarium">MA</collectionCode>
,
<collectionCode box="[676,722,1549,1572]" country="USA" lsid="urn:lsid:biocol.org:col:15859" name="Missouri Botanical Garden" pageId="0" pageNumber="231" type="Herbarium">MO</collectionCode>
,
<collectionCode box="[732,790,1549,1572]" country="France" httpUri="http://biocol.org/urn:lsid:biocol.org:col:15519" lsid="urn:lsid:biocol.org:col:15519" name="Université Montpellier 2" pageId="0" pageNumber="231" type="Herbarium">MPU</collectionCode>
,
<collectionCode box="[801,838,1549,1572]" country="USA" lsid="urn:lsid:biocol.org:col:15556" name="William and Lynda Steere Herbarium of the New York Botanical Garden" pageId="0" pageNumber="231" type="Herbarium">NY</collectionCode>
,
<collectionCode box="[848,864,1549,1572]" country="France" lsid="urn:lsid:biocol.org:col:15763" name="Museum National d' Histoire Naturelle, Paris (MNHN) - Vascular Plants" pageId="0" pageNumber="231" type="Herbarium">P</collectionCode>
,
<collectionCode box="[874,922,1549,1572]" country="Sweden" httpUri="http://biocol.org/urn:lsid:biocol.org:col:15542" lsid="urn:lsid:biocol.org:col:15542" name="Uppsala University, Museum of Evolution, Botany Section (Fytoteket)" pageId="0" pageNumber="231" type="Herbarium">UPS</collectionCode>
,
<collectingCountry box="[932,963,1549,1572]" name="United States of America" pageId="0" pageNumber="231">US</collectingCountry>
)
</materialsCitation>
.
</paragraph>
<paragraph blockId="0.[676,1209,1616,1702]" lastBlockId="2.[113,646,205,1303]" lastPageId="2" lastPageNumber="233" pageId="0" pageNumber="231">
Liana at least
<quantity box="[849,906,1616,1641]" metricMagnitude="1" metricUnit="m" metricValue="1.2" pageId="0" pageNumber="231" unit="m" value="12.0">12 m</quantity>
long. Branches and branchlets with a pale-grey, powdery indumentum, glabrescent with age. Stipules early caducous, triangular,
<quantity box="[260,362,205,230]" metricMagnitude="-3" metricUnit="m" metricValue="3.5" metricValueMax="4.0" metricValueMin="3.0" pageId="2" pageNumber="233" unit="mm" value="3.5" valueMax="4.0" valueMin="3.0">3-4 mm</quantity>
long,
<emphasis box="[456,474,205,230]" italics="true" pageId="2" pageNumber="233">c.</emphasis>
<quantity box="[489,564,205,230]" metricMagnitude="-3" metricUnit="m" metricValue="2.0" pageId="2" pageNumber="233" unit="mm" value="2.0">2 mm</quantity>
wide, tomentellous outside, ± glabrous inside. Leaves: petiole subterete, grooved above,
<quantity box="[479,582,266,291]" metricMagnitude="-2" metricUnit="m" metricValue="1.05" metricValueMax="1.4" metricValueMin="0.7" pageId="2" pageNumber="233" unit="mm" value="10.5" valueMax="14.0" valueMin="7.0">7-14 mm</quantity>
long, indumentum as on branchlets; lamina coriaceous, shiny, obovate to oblong-elliptic, 2- 2.5 times as long as wide, (8-)9-15(-17) × (2-)4-7(-8) cm, cuneate to rounded and sometimes unequal-sided at base, acute to shortly acuminate at apex, the acumen subacute, &lt;
<quantity box="[581,646,450,475]" metricMagnitude="-3" metricUnit="m" metricValue="5.0" pageId="2" pageNumber="233" unit="mm" value="5.0">5 mm</quantity>
long; midrib and the 5-8 pairs of main lateral nerves ± plane above, prominent beneath; leaf surface glabrous both sides except for the extension of the petiole indumentum on the midrib, especially so beneath; glands ± small, ± well dispersed, mainly on the lower surface.
</paragraph>
<caption ID-DOI="http://doi.org/10.5281/zenodo.5186561" ID-Zenodo-Dep="5186561" httpUri="https://zenodo.org/record/5186561/files/figure.png" pageId="1" pageNumber="232" startId="1.[113,124,1644,1661]" targetBox="[201,1123,234,1549]" targetPageId="1">
<paragraph blockId="1.[113,1209,1644,1704]" pageId="1" pageNumber="232">
FIG. 1. —
<taxonomicName authority="Breteler" authorityName="Breteler" authorityYear="2005" box="[191,501,1644,1661]" class="Magnoliopsida" family="Dichapetalaceae" genus="Dichapetalum" kingdom="Plantae" order="Malpighiales" pageId="1" pageNumber="232" phylum="Tracheophyta" rank="species" species="petaloideum">
<emphasis bold="true" box="[191,431,1644,1661]" italics="true" pageId="1" pageNumber="232">Dichapetalum petaloideum</emphasis>
Breteler
</taxonomicName>
:
<emphasis bold="true" box="[511,524,1644,1661]" pageId="1" pageNumber="232">A</emphasis>
, flowering branch;
<emphasis bold="true" box="[683,696,1644,1661]" pageId="1" pageNumber="232">B</emphasis>
, apex of branchlet (
<emphasis bold="true" box="[860,871,1644,1661]" pageId="1" pageNumber="232">b</emphasis>
) with inflorescence in leaf axil (
<emphasis bold="true" box="[1127,1138,1644,1661]" pageId="1" pageNumber="232">p</emphasis>
, petiole) showing stipules (
<emphasis bold="true" box="[262,272,1666,1683]" pageId="1" pageNumber="232">s</emphasis>
);
<emphasis bold="true" box="[287,301,1666,1683]" pageId="1" pageNumber="232">C</emphasis>
, leaf axil with inflorescence;
<emphasis bold="true" box="[540,554,1666,1683]" pageId="1" pageNumber="232">D</emphasis>
, flower bud;
<emphasis bold="true" box="[662,674,1666,1683]" pageId="1" pageNumber="232">E</emphasis>
, open flower;
<emphasis bold="true" box="[793,804,1666,1683]" pageId="1" pageNumber="232">F</emphasis>
, sepal inside;
<emphasis bold="true" box="[923,937,1666,1683]" pageId="1" pageNumber="232">G</emphasis>
, flower cut lengthwise;
<emphasis bold="true" box="[1134,1148,1666,1683]" pageId="1" pageNumber="232">H</emphasis>
, flower tube from outside;
<emphasis bold="true" box="[271,277,1687,1704]" pageId="1" pageNumber="232">I</emphasis>
, flower tube from inside;
<emphasis bold="true" box="[488,498,1687,1704]" pageId="1" pageNumber="232">J</emphasis>
, pistil.
<emphasis box="[558,773,1687,1704]" italics="true" pageId="1" pageNumber="232">Wieringa &amp; van Nek 3284.</emphasis>
Drawing by H. DE VRIES.
</paragraph>
</caption>
<paragraph blockId="2.[113,646,205,1303]" lastBlockId="2.[676,1209,205,291]" pageId="2" pageNumber="233">
Inflorescence glomerate to very shortly (up to
<quantity box="[113,183,696,721]" metricMagnitude="-3" metricUnit="m" metricValue="5.0" pageId="2" pageNumber="233" unit="mm" value="5.0">5 mm</quantity>
) pedunculate, sometimes arranged on short, leafless, axillary shoots, up to 2 times distinctly branched, up to
<emphasis box="[392,410,757,782]" italics="true" pageId="2" pageNumber="233">c.</emphasis>
25-flowered, with a powdery to tomentellous indumentum; bracts and bracteoles ± broadly triangular-ovate, acute, up to
<quantity box="[178,243,849,874]" metricMagnitude="-3" metricUnit="m" metricValue="1.0" pageId="2" pageNumber="233" unit="mm" value="1.0">1 mm</quantity>
long, tomentellous; pedicels
<quantity box="[558,646,849,874]" metricMagnitude="-3" metricUnit="m" metricValue="1.5" metricValueMax="2.0" metricValueMin="1.0" pageId="2" pageNumber="233" unit="mm" value="1.5" valueMax="2.0" valueMin="1.0">1-2 mm</quantity>
long, articulated at or near the apex; sepals palegreen, imbricate, ± stiff, erect, slightly concave, shortly united at base, ovate-triangular, 3-3.5 ×
<quantity box="[113,182,972,997]" metricMagnitude="-3" metricUnit="m" metricValue="2.0" pageId="2" pageNumber="233" unit="mm" value="2.0">2 mm</quantity>
, tomentellous outside as well as on the upper part inside; petals white to cream-coloured, entire, firm, valvate in bud, at base laterally united with the alternating filaments in a
<emphasis box="[559,575,1064,1089]" italics="true" pageId="2" pageNumber="233">c.</emphasis>
<quantity box="[582,646,1064,1089]" metricMagnitude="-3" metricUnit="m" metricValue="1.0" pageId="2" pageNumber="233" unit="mm" value="1.0">1 mm</quantity>
long tube, ± flat, lanceolate, 3-4 ×
<quantity box="[487,552,1094,1119]" metricMagnitude="-3" metricUnit="m" metricValue="1.0" pageId="2" pageNumber="233" unit="mm" value="1.0">1 mm</quantity>
, the free parts tomentellous outside as well as on the apical part inside; stamens
<emphasis box="[339,356,1156,1181]" italics="true" pageId="2" pageNumber="233">c.</emphasis>
<quantity box="[365,432,1156,1181]" metricMagnitude="-3" metricUnit="m" metricValue="2.0" pageId="2" pageNumber="233" unit="mm" value="2.0">2 mm</quantity>
long, the filaments white, almost completely adnate to the adjacent petals, glabrous; anthers
<emphasis box="[379,395,1217,1242]" italics="true" pageId="2" pageNumber="233">c.</emphasis>
<quantity box="[402,467,1217,1242]" metricMagnitude="-3" metricUnit="m" metricValue="1.0" pageId="2" pageNumber="233" unit="mm" value="1.0">1 mm</quantity>
long, ± ovoid in outline; staminodes (disc glands) subquadrate, ± flat,
<emphasis box="[183,200,1278,1303]" italics="true" pageId="2" pageNumber="233">c.</emphasis>
0.3 ×
<quantity box="[271,358,1278,1303]" metricMagnitude="-4" metricUnit="m" metricValue="3.0" pageId="2" pageNumber="233" unit="mm" value="0.3">0.3 mm</quantity>
, glabrous; pistil
<quantity box="[537,646,1278,1303]" metricMagnitude="-3" metricUnit="m" metricValue="1.75" metricValueMax="2.0" metricValueMin="1.5" pageId="2" pageNumber="233" unit="mm" value="1.75" valueMax="2.0" valueMin="1.5">1.5-2 mm</quantity>
long; ovary depressed globose, 3-locular, velutinous-tomentellous; style white, glabrous,
<emphasis box="[1121,1137,236,261]" italics="true" pageId="2" pageNumber="233">c.</emphasis>
<quantity box="[1144,1209,236,261]" metricMagnitude="-3" metricUnit="m" metricValue="1.0" pageId="2" pageNumber="233" unit="mm" value="1.0">1 mm</quantity>
long, 3-lobed apically. Fruits unknown. —
<figureCitation box="[1137,1205,266,291]" captionStart="FIG" captionStartId="1.[113,124,1644,1661]" captionTargetBox="[201,1123,234,1549]" captionTargetId="figure-36@1.[164,1151,205,1559]" captionTargetPageId="1" captionText="FIG. 1. — Dichapetalum petaloideum Breteler: A, flowering branch; B, apex of branchlet (b) with inflorescence in leaf axil (p, petiole) showing stipules (s); C, leaf axil with inflorescence; D, flower bud; E, open flower; F, sepal inside; G, flower cut lengthwise; H, flower tube from outside; I, flower tube from inside; J, pistil. Wieringa &amp; van Nek 3284. Drawing by H. DE VRIES." figureDoi="http://doi.org/10.5281/zenodo.5186561" httpUri="https://zenodo.org/record/5186561/files/figure.png" pageId="2" pageNumber="233">Fig. 1.</figureCitation>
</paragraph>
<paragraph blockId="2.[676,1209,328,383]" box="[703,1209,328,353]" pageId="2" pageNumber="233">HABITAT AND DISTRIBUTION. — Rain forest in</paragraph>
<paragraph blockId="2.[676,1209,328,383]" box="[676,1193,358,383]" pageId="2" pageNumber="233">
<materialsCitation box="[676,1187,358,383]" country="Gabon" location="Only" pageId="2" pageNumber="233" specimenCount="1">
SW
<collectingCountry box="[724,802,358,383]" name="Gabon" pageId="2" pageNumber="233">Gabon</collectingCountry>
.
<location LSID="urn:lsid:plazi:treatment:03D58795FF97EA1CA7EECA0E925572EB:8EA36058FF95EA1DA666CE75905A720A" box="[812,868,358,383]" country="Gabon" name="Only" pageId="2" pageNumber="233">Only</location>
known from the
<typeStatus box="[1058,1104,358,383]" pageId="2" pageNumber="233">type</typeStatus>
locality
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection lastPageId="3" lastPageNumber="234" pageId="2" pageNumber="233" type="discussion">
<paragraph blockId="2.[676,1210,420,1303]" pageId="2" pageNumber="233">
DISCUSSION. —The indumentum of the petals of African
<taxonomicName box="[783,1049,450,475]" class="Magnoliopsida" family="Dichapetalaceae" genus="Dichapetalum" kingdom="Plantae" order="Malpighiales" pageId="2" pageNumber="233" phylum="Tracheophyta" rank="species" species="undetermined">
<emphasis box="[783,949,450,475]" italics="true" pageId="2" pageNumber="233">Dichapetalum</emphasis>
species
</taxonomicName>
varies from completely absent or with only a few hairs just below the lobes outside, which is quite common, to hairy on the upper part outside (e.g.,
<taxonomicName authority="Engl." authorityName="Engl." box="[995,1203,542,567]" class="Magnoliopsida" family="Dichapetalaceae" genus="Dichapetalum" kingdom="Plantae" order="Malpighiales" pageId="2" pageNumber="233" phylum="Tracheophyta" rank="species" species="reticulatum">
<emphasis box="[995,1142,542,567]" italics="true" pageId="2" pageNumber="233">D. reticulatum</emphasis>
Engl.
</taxonomicName>
,
<taxonomicName authority="Breteler" authorityName="Breteler" box="[676,950,573,598]" class="Magnoliopsida" family="Dichapetalaceae" genus="Dichapetalum" kingdom="Plantae" order="Malpighiales" pageId="2" pageNumber="233" phylum="Tracheophyta" rank="species" species="trichocephalum">
<emphasis box="[676,863,573,598]" italics="true" pageId="2" pageNumber="233">D. trichocephalum</emphasis>
Breteler
</taxonomicName>
) to pubescent both sides (e.g.,
<taxonomicName authority="Pellegr." authorityName="Pellegr." box="[738,926,604,629]" class="Magnoliopsida" family="Dichapetalaceae" genus="Dichapetalum" kingdom="Plantae" order="Malpighiales" pageId="2" pageNumber="233" phylum="Tracheophyta" rank="species" species="pierrei">
<emphasis box="[738,840,604,629]" italics="true" pageId="2" pageNumber="233">D. pierrei</emphasis>
Pellegr.
</taxonomicName>
,
<taxonomicName authority="Engl." authorityName="Engl." box="[940,1130,604,629]" class="Magnoliopsida" family="Dichapetalaceae" genus="Dichapetalum" kingdom="Plantae" order="Malpighiales" pageId="2" pageNumber="233" phylum="Tracheophyta" rank="species" species="rudatisii">
<emphasis box="[940,1065,604,629]" italics="true" pageId="2" pageNumber="233">D. rudatisii</emphasis>
Engl.
</taxonomicName>
). In all these instances, however, the petals are thin, and, as a rule, bilobed and bicucculate. They never show characteristics like those of
<taxonomicName authorityName="Breteler" authorityYear="2005" box="[969,1130,696,721]" class="Magnoliopsida" family="Dichapetalaceae" genus="Dichapetalum" kingdom="Plantae" order="Malpighiales" pageId="2" pageNumber="233" phylum="Tracheophyta" rank="species" species="petaloideum">
<emphasis box="[969,1130,696,721]" italics="true" pageId="2" pageNumber="233">D. petaloideum</emphasis>
</taxonomicName>
, which are firm, entire, ± flat and lanceolate in outline. By its vegetative parts and its inflorescence the new species resembles
<taxonomicName authority="Chodat" authorityName="Chodat" box="[856,1089,788,813]" class="Magnoliopsida" family="Dichapetalaceae" genus="Dichapetalum" kingdom="Plantae" order="Malpighiales" pageId="2" pageNumber="233" phylum="Tracheophyta" rank="species" species="crassifolium">
<emphasis box="[856,1004,788,813]" italics="true" pageId="2" pageNumber="233">D. crassifolium</emphasis>
Chodat
</taxonomicName>
very much. The latter has also entire or nearly entire petals, but they are thin and ± glabrous.
</paragraph>
<paragraph blockId="2.[676,1210,420,1303]" pageId="2" pageNumber="233">
Although of staminodial nature, like all the petals in
<taxonomicName authority="(BRETELER 1973: 25)" baseAuthorityName="BRETELER" baseAuthorityPageNumber="25" baseAuthorityYear="1973" box="[779,1202,910,935]" class="Magnoliopsida" family="Dichapetalaceae" kingdom="Plantae" order="Malpighiales" pageId="2" pageNumber="233" phylum="Tracheophyta" rank="family">
Dichapetalaceae (
<bibRefCitation author="BRETELER F. J." box="[974,1194,910,935]" pageId="2" pageNumber="233" pagination="1 - 124" refId="ref1518" refString="BRETELER F. J. 1973. - The African Dichapetalaceae (III). Meded. Landbouwhogeschool Wageningen 73 (13): 1 - 124." type="journal article" year="1973">BRETELER 1973: 25</bibRefCitation>
)
</taxonomicName>
, those of
<taxonomicName authorityName="Breteler" authorityYear="2005" box="[767,927,941,966]" class="Magnoliopsida" family="Dichapetalaceae" genus="Dichapetalum" kingdom="Plantae" order="Malpighiales" pageId="2" pageNumber="233" phylum="Tracheophyta" rank="species" species="petaloideum">
<emphasis box="[767,927,941,966]" italics="true" pageId="2" pageNumber="233">D. petaloideum</emphasis>
</taxonomicName>
seem to function like true petals in showing protective aspects (
<figureCitation box="[1103,1192,972,997]" captionStart="FIG" captionStartId="1.[113,124,1644,1661]" captionTargetBox="[201,1123,234,1549]" captionTargetId="figure-36@1.[164,1151,205,1559]" captionTargetPageId="1" captionText="FIG. 1. — Dichapetalum petaloideum Breteler: A, flowering branch; B, apex of branchlet (b) with inflorescence in leaf axil (p, petiole) showing stipules (s); C, leaf axil with inflorescence; D, flower bud; E, open flower; F, sepal inside; G, flower cut lengthwise; H, flower tube from outside; I, flower tube from inside; J, pistil. Wieringa &amp; van Nek 3284. Drawing by H. DE VRIES." figureDoi="http://doi.org/10.5281/zenodo.5186561" httpUri="https://zenodo.org/record/5186561/files/figure.png" pageId="2" pageNumber="233">Fig. 1D</figureCitation>
), hence its epithet
<taxonomicName authorityName="Breteler" authorityYear="2005" box="[883,1020,1002,1027]" class="Magnoliopsida" family="Dichapetalaceae" genus="Dichapetalum" kingdom="Plantae" order="Malpighiales" pageId="2" pageNumber="233" phylum="Tracheophyta" rank="species" species="petaloideum">
<emphasis box="[883,1020,1002,1027]" italics="true" pageId="2" pageNumber="233">petaloideum</emphasis>
</taxonomicName>
: having a floral envelope resembling petals. The flower tube looks like a true corolla tube with the filaments adnate to it. However, it is composed of 10 elements, five petals and five filaments, the latter filling the gaps between the former (
<figureCitation box="[957,1064,1156,1181]" captionStart="FIG" captionStartId="1.[113,124,1644,1661]" captionTargetBox="[201,1123,234,1549]" captionTargetId="figure-36@1.[164,1151,205,1559]" captionTargetPageId="1" captionText="FIG. 1. — Dichapetalum petaloideum Breteler: A, flowering branch; B, apex of branchlet (b) with inflorescence in leaf axil (p, petiole) showing stipules (s); C, leaf axil with inflorescence; D, flower bud; E, open flower; F, sepal inside; G, flower cut lengthwise; H, flower tube from outside; I, flower tube from inside; J, pistil. Wieringa &amp; van Nek 3284. Drawing by H. DE VRIES." figureDoi="http://doi.org/10.5281/zenodo.5186561" httpUri="https://zenodo.org/record/5186561/files/figure.png" pageId="2" pageNumber="233">Fig. 1H, I</figureCitation>
).
</paragraph>
<paragraph blockId="2.[676,1210,420,1303]" pageId="2" pageNumber="233">
To identify
<taxonomicName authorityName="Breteler" authorityYear="2005" box="[840,1012,1186,1211]" class="Magnoliopsida" family="Dichapetalaceae" genus="Dichapetalum" kingdom="Plantae" order="Malpighiales" pageId="2" pageNumber="233" phylum="Tracheophyta" rank="species" species="petaloideum">
<emphasis box="[840,1012,1186,1211]" italics="true" pageId="2" pageNumber="233">D. petaloideum</emphasis>
</taxonomicName>
with BRETELER’ s (1986) Key II: Central African Species (p. 22) it seems best to make use of its aberrant characters. Preceding couplet 1 add a new couplet 0 as follows:
</paragraph>
<paragraph blockId="2.[113,1210,1351,1399]" pageId="2" pageNumber="233">
— Petals firm, entire, lanceolate, ± flat ....................................................................................
<taxonomicName authorityName="Breteler" authorityYear="2005" box="[1046,1210,1351,1374]" class="Magnoliopsida" family="Dichapetalaceae" genus="Dichapetalum" kingdom="Plantae" order="Malpighiales" pageId="2" pageNumber="233" phylum="Tracheophyta" rank="species" species="petaloideum">
<emphasis bold="true" box="[1046,1210,1351,1374]" pageId="2" pageNumber="233">D. petaloideum</emphasis>
</taxonomicName>
— Petals thin, as a rule bilobed and bicucculate apically .................................................................................. 1
</paragraph>
<paragraph blockId="2.[113,1210,1432,1522]" box="[140,1060,1432,1457]" pageId="2" pageNumber="233">
For the
<emphasis box="[225,387,1432,1457]" italics="true" pageId="2" pageNumber="233">
Flore du
<collectingCountry box="[317,387,1432,1457]" name="Gabon" pageId="2" pageNumber="233">Gabon</collectingCountry>
</emphasis>
(
<bibRefCitation author="BRETELER F. J." box="[403,614,1432,1457]" pageId="2" pageNumber="233" refId="ref1600" refString="BRETELER F. J. 1991. - Dichapetalaceae, in Flore du Gabon, vol. 32. Museum national d'Histoire naturelle, Paris." type="book" year="1991">BRETELER 1991: 30</bibRefCitation>
) the same preceding couplet is proposed:
</paragraph>
<paragraph blockId="2.[113,1210,1432,1522]" pageId="2" pageNumber="233">
— Pétales fermes, entiers, lancéolés, ± plans ............................................................................
<taxonomicName authorityName="Breteler" authorityYear="2005" box="[1046,1210,1474,1497]" class="Magnoliopsida" family="Dichapetalaceae" genus="Dichapetalum" kingdom="Plantae" order="Malpighiales" pageId="2" pageNumber="233" phylum="Tracheophyta" rank="species" species="petaloideum">
<emphasis bold="true" box="[1046,1210,1474,1497]" pageId="2" pageNumber="233">D. petaloideum</emphasis>
</taxonomicName>
— Pétales minces, habituellement bilobés et bicucculés au sommet .................................................................. 1
</paragraph>
<paragraph blockId="2.[113,646,1554,1702]" lastBlockId="2.[677,1210,1554,1702]" pageId="2" pageNumber="233">
N OT E S. — On my request Dr W. P U N T investigated the pollen of
<taxonomicName authorityName="Breteler" authorityYear="2005" box="[417,589,1585,1610]" class="Magnoliopsida" family="Dichapetalaceae" genus="Dichapetalum" kingdom="Plantae" order="Malpighiales" pageId="2" pageNumber="233" phylum="Tracheophyta" rank="species" species="petaloideum">
<emphasis box="[417,589,1585,1610]" italics="true" pageId="2" pageNumber="233">D. petaloideum</emphasis>
</taxonomicName>
. His conclusion (pers. comm.) is that the pollen of this species shows advanced characteristics as of the
<taxonomicName box="[160,312,1677,1702]" class="Magnoliopsida" family="Dichapetalaceae" genus="Dichapetalum" kingdom="Plantae" order="Malpighiales" pageId="2" pageNumber="233" phylum="Tracheophyta" rank="species" species="heudelotii">
<emphasis box="[160,312,1677,1702]" italics="true" pageId="2" pageNumber="233">D. heudelotii</emphasis>
</taxonomicName>
-group in the
<taxonomicName box="[484,635,1677,1702]" class="Magnoliopsida" family="Dichapetalaceae" genus="Dichapetalum" kingdom="Plantae" order="Malpighiales" pageId="2" pageNumber="233" phylum="Tracheophyta" rank="species" species="heudelotii">
<emphasis box="[484,635,1677,1702]" italics="true" pageId="2" pageNumber="233">D. heudelotii</emphasis>
</taxonomicName>
-
<typeStatus box="[677,729,1554,1579]" pageId="2" pageNumber="233">type</typeStatus>
(
<bibRefCitation author="PUNT W." box="[751,891,1554,1579]" pageId="2" pageNumber="233" pagination="1 - 97" refId="ref1798" refString="PUNT W. 1975. - Pollen morphology of Dichapetalaceae with special reference to evolutionary trends and mutual relationship of pollen types. Rev. Palaeobot. Palynol. 19: 1 - 97." type="journal article" year="1975">PUNT 1975</bibRefCitation>
). According to PUNT the pollen does not show any character which indicates that another classification for this species, e.g., in a separate, new genus, might be justified.
</paragraph>
<paragraph blockId="3.[113,646,205,414]" pageId="3" pageNumber="234">
Cuts of the branches of the
<typeStatus box="[475,577,205,230]" pageId="3" pageNumber="234">holotype</typeStatus>
show some traces of an exudate as seen in
<taxonomicName authority="Chodat" authorityName="Chodat" class="Magnoliopsida" family="Dichapetalaceae" genus="Dichapetalum" kingdom="Plantae" order="Malpighiales" pageId="3" pageNumber="234" phylum="Tracheophyta" rank="species" species="crassifolium">
<emphasis italics="true" pageId="3" pageNumber="234">D. crassifolium</emphasis>
Chodat
</taxonomicName>
(
<bibRefCitation author="BRETELER F. J." box="[285,454,266,291]" pageId="3" pageNumber="234" pagination="1 - 84" refId="ref1546" refString="BRETELER F. J. 1978. - The African Dichapetalaceae IV. Meded. Landbouwhogeschool Wageningen 78 (10): 1 - 84." type="journal article" year="1978">BRETELER 1978</bibRefCitation>
: photograph 3).
</paragraph>
<paragraph blockId="3.[113,646,205,414]" pageId="3" pageNumber="234">
Boiling flower material of
<taxonomicName authorityName="Breteler" authorityYear="2005" box="[426,587,297,322]" class="Magnoliopsida" family="Dichapetalaceae" genus="Dichapetalum" kingdom="Plantae" order="Malpighiales" pageId="3" pageNumber="234" phylum="Tracheophyta" rank="species" species="petaloideum">
<emphasis box="[426,587,297,322]" italics="true" pageId="3" pageNumber="234">D. petaloideum</emphasis>
</taxonomicName>
soon rendered the water reddish brown. The same happened to the alcohol (60%) in which this boiled material was preserved.
</paragraph>
</subSubSection>
</treatment>
</document>
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