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<document id="9167CE3FC3B3BFAA5FAFDA00FF2F2631" ID-CLB-Dataset="3017" ID-DOI="10.15553/c2016v711a18" ID-GBIF-Dataset="775a3d67-cfe9-4f8c-87e5-0c50808cb29a" ID-ISSN="2235-3658" ID-Zenodo-Dep="5754033" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1637683507277" checkinUser="carolina" docAuthor="Castillon, Jean-Philippe &amp; Castillon, Jean-Bernard" docDate="2016" docId="B03D87AB683FFF8BFCD0FA8C2DB0A287" docLanguage="fr" docName="Candollea.71.1.149-158.pdf" docOrigin="Candollea 71 (1)" docStyle="DocumentStyle:1E5CC43F38D0DBC531513809D1267F7B.3:Candollea.2015-.journal_article" docStyleId="1E5CC43F38D0DBC531513809D1267F7B" docStyleName="Candollea.2015-.journal_article" docStyleVersion="3" docTitle="Euphorbia physoclada Boiss., Cent. Euphorb." docType="treatment" docVersion="9" lastPageNumber="152" masterDocId="4C04FFD3683EFF88FFF4FFD62952A015" masterDocTitle="A propos de quelques noms oubliés dans le genre Euphorbia L. (Euphorbiaceae) à Madagascar" masterLastPageNumber="158" masterPageNumber="149" pageNumber="150" updateTime="1699469533617" updateUser="ExternalLinkService" zenodo-license-document="CC-BY-4.0" zenodo-license-figures="CC-BY-4.0">
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<mods:title id="763892D1D31080FF3CE2BA220BA65DF9">A propos de quelques noms oubliés dans le genre Euphorbia L. (Euphorbiaceae) à Madagascar</mods:title>
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<mods:name id="75A949113C710086B66EAA904B66CE9B" type="personal">
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<mods:namePart id="0BDDE2A7F3E3A3FA6E8589DDBD115D75">Castillon, Jean-Philippe</mods:namePart>
<mods:affiliation id="E42C4750ECD974DD43D6849713586AD2">IUT de Saint-Pierre, Université de la Réunion, rue des Capucins 1, 97427 LEtang-Salé-les-Bains, la Réunion, France.</mods:affiliation>
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<mods:namePart id="1FD4C91B168DBEC6B683D7F1012F497D">Castillon, Jean-Bernard</mods:namePart>
<mods:affiliation id="987FB6FECFBF74F6B5BD90155F0AB66A">Professeur retraité de lUniversité de la Réunion, rue Jean Albany 41, 97430 Le Tampon, la Réunion, France.</mods:affiliation>
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<mods:title id="57D8B6A7B16B62C6CF18E500DD6D9CFA">Candollea</mods:title>
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<mods:date id="FFD8920FBC4E2CD8192560D4C5297385">2016</mods:date>
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<treatment id="B03D87AB683FFF8BFCD0FA8C2DB0A287" ID-DOI="http://doi.org/10.5281/zenodo.5772888" ID-GBIF-Taxon="191263333" ID-Zenodo-Dep="5772888" LSID="urn:lsid:plazi:treatment:B03D87AB683FFF8BFCD0FA8C2DB0A287" httpUri="http://treatment.plazi.org/id/B03D87AB683FFF8BFCD0FA8C2DB0A287" lastPageId="3" lastPageNumber="152" pageId="1" pageNumber="150">
<subSubSection id="708E6536683FFF89FCD0FA8C2C26A567" box="[804,1396,1370,1394]" pageId="1" pageNumber="150" type="nomenclature">
<paragraph id="382B36BD683FFF89FCD0FA8C2C26A567" blockId="1.[804,1396,1370,1394]" box="[804,1396,1370,1394]" pageId="1" pageNumber="150">
<heading id="636381D1683FFF89FCD0FA8C2C26A567" box="[804,1396,1370,1394]" centered="true" fontSize="10" level="2" pageId="1" pageNumber="150" reason="2">
<treatmentCitation id="B93510AC683FFF89FCD0FA8C2C22A567" author="Boiss." box="[804,1392,1370,1394]" page="24" pageId="1" pageNumber="150" score="0.0036255827091627333" volumeTitle="Cent. Euphorb." year="1860">
<taxonomicName id="FF944D3E683FFF89FCD0FA8C2C5AA567" ID-CoL="6GZWP" authority="Boiss., Cent. Euphorb." authorityName="Boiss., Cent. Euphorb." box="[804,1288,1370,1394]" class="Magnoliopsida" family="Euphorbiaceae" genus="Euphorbia" kingdom="Plantae" order="Malpighiales" pageId="1" pageNumber="150" phylum="Tracheophyta" rank="species" species="physoclada">
<emphasis id="0AE0EAAF683FFF89FCD0FA8C2D59A567" bold="true" box="[804,1035,1370,1394]" italics="true" pageId="1" pageNumber="150">Euphorbia physoclada</emphasis>
Boiss., Cent. Euphorb.
</taxonomicName>
: 24. 1860
</treatmentCitation>
.
</heading>
</paragraph>
</subSubSection>
<subSubSection id="708E6536683FFF89FCBEFA532C23A5C8" pageId="1" pageNumber="150" type="materials_examined">
<paragraph id="382B36BD683FFF89FCBEFA532C23A5C8" blockId="1.[839,1455,1412,1501]" pageId="1" pageNumber="150">
<materialsCitation id="88FC3CE0683FFF89FCBEFA532C3FA5C8" ID-GBIF-Occurrence="3417090301" collectingDate="1848-10" collectionCode="G, P" collectorName="Boivin" country="Madagascar" location="Baie de Rigny" municipality="Baie de Rigny" pageId="1" pageNumber="150" specimenCode="G00407234, P00224804" specimenCount="1" stateProvince="Antsiranana" typeStatus="typus">
<emphasis id="0AE0EAAF683FFF89FCBEFA532C30A588" bold="true" box="[842,1378,1412,1437]" pageId="1" pageNumber="150">
<typeStatus id="E72F881F683FFF89FCBEFA532AC4A588" box="[842,918,1413,1437]" pageId="1" pageNumber="150">Typus</typeStatus>
:
<collectingCountry id="4083762D683FFF89FC5AFA532D09A58E" box="[942,1115,1413,1437]" name="Madagascar" pageId="1" pageNumber="150">MADAGASCAR</collectingCountry>
. Prov.
<collectingRegion id="FA50F85F683FFF89FB4EFA522C07A589" box="[1210,1365,1412,1436]" country="Madagascar" name="Antsiranana" pageId="1" pageNumber="150">Antsiranana</collectingRegion>
:
</emphasis>
<locationDeviation id="29992F9F683FFF89FA84FA532A99A5A8" pageId="1" pageNumber="150">N de Madagascar</locationDeviation>
,
<collectingMunicipality id="D84FACC7683FFF89FC22FA732D3CA5A8" box="[982,1134,1445,1469]" pageId="1" pageNumber="150">Baie de Rigny</collectingMunicipality>
,
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<collectingDate id="5C6EE995683FFF89FB8DFA732D99A5A8" box="[1145,1227,1445,1469]" pageId="1" pageNumber="150" value="1848-10">X.1848</collectingDate>
</date>
,
<emphasis id="0AE0EAAF683FFF89FB22FA732C08A5A8" box="[1238,1370,1445,1469]" italics="true" pageId="1" pageNumber="150">
<collectorName id="9561536B683FFF89FB22FA732C4FA5A9" box="[1238,1309,1445,1468]" pageId="1" pageNumber="150">Boivin</collectorName>
2649
</emphasis>
(holo-:
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[
<specimenCode id="68329EC6683FFF89FC9EFA132AA2A5C8" box="[874,1008,1477,1501]" collectionCode="G" country="Switzerland" lsid="urn:lsid:biocol.org:col:15706" name="Conservatoire et Jardin botaniques de la Ville de Genève" pageId="1" pageNumber="150" type="Herbarium">G00407234</specimenCode>
] image vue; iso-:
<collectionCode id="5E85AE78683FFF89FB41FA132D97A5C9" box="[1205,1221,1477,1500]" country="France" lsid="urn:lsid:biocol.org:col:15763" name="Museum National d' Histoire Naturelle, Paris (MNHN) - Vascular Plants" pageId="1" pageNumber="150" type="Herbarium">P</collectionCode>
[
<specimenCode id="68329EC6683FFF89FB26FA132C0EA5C8" box="[1234,1372,1477,1501]" collectionCode="P" country="France" lsid="urn:lsid:biocol.org:col:15763" name="Museum National d' Histoire Naturelle, Paris (MNHN) - Vascular Plants" pageId="1" pageNumber="150" type="Herbarium">P00224804</specimenCode>
]!)
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection id="708E6536683FFF8BFCBEF9D32DB0A287" lastPageId="3" lastPageNumber="152" pageId="1" pageNumber="150" type="description">
<paragraph id="382B36BD683FFF8BFCBEF9D32A50A507" blockId="1.[804,1456,1541,1949]" lastBlockId="3.[116,770,282,1298]" lastPageId="3" lastPageNumber="152" pageId="1" pageNumber="150">
<emphasis id="0AE0EAAF683FFF89FCBEF9D32ACFA608" box="[842,925,1541,1565]" italics="true" pageId="1" pageNumber="150">Arbuste</emphasis>
dioïque excessivement ramifié dès la base, à croissance similaire aux autres euphorbes de la section
<taxonomicName id="FF944D3E683FFF89FCD0F9932AE9A648" box="[804,955,1605,1629]" class="Magnoliopsida" family="Euphorbiaceae" genus="Euphorbia" kingdom="Plantae" order="Malpighiales" pageId="1" pageNumber="150" phylum="Tracheophyta" rank="section" section="Denisophorbia">
<emphasis id="0AE0EAAF683FFF89FCD0F9932AE9A648" box="[804,955,1605,1629]" italics="true" pageId="1" pageNumber="150">Denisophorbia</emphasis>
</taxonomicName>
, avec une succession dhypopodiums allongés de
<quantity id="FF6C9B58683FFF89FCB3F9B22AF6A669" box="[839,932,1636,1660]" metricMagnitude="-2" metricUnit="m" metricValue="7.5" metricValueMax="10.0" metricValueMin="5.0" pageId="1" pageNumber="150" unit="cm" value="7.5" valueMax="10.0" valueMin="5.0">5-10 cm</quantity>
et de brachyblastes de
<quantity id="FF6C9B58683FFF89FB5FF9B32DAEA669" box="[1195,1276,1637,1661]" metricMagnitude="-2" metricUnit="m" metricValue="1.5" metricValueMax="2.0" metricValueMin="1.0" pageId="1" pageNumber="150" unit="cm" value="1.5" valueMax="2.0" valueMin="1.0">1-2 cm</quantity>
. Dans les zones exposées à des grands vents (cap dAmbre), la plante sétale sur le sol et atteint
<quantity id="FF6C9B58683FFF89FC00F9732D4CA6A9" box="[1012,1054,1701,1725]" metricMagnitude="0" metricUnit="m" metricValue="2.0" pageId="1" pageNumber="150" unit="m" value="2.0">2 m</quantity>
de diam. pour une hauteur de
<quantity id="FF6C9B58683FFF89FA98F9732CFCA6A9" box="[1388,1454,1701,1725]" metricMagnitude="-1" metricUnit="m" metricValue="8.0" pageId="1" pageNumber="150" unit="cm" value="80.0">80 cm</quantity>
seulement. Dans les zones plus protégées (forêt côtière de la baie de Sakalava), elle croît plus en hauteur et peut atteindre 2,50 m.
<emphasis id="0AE0EAAF683FFF89FC70F8D32A8AA709" box="[900,984,1797,1820]" italics="true" pageId="1" pageNumber="150">Racines</emphasis>
tubéreuses pouvant former un imposant caudex souterrain.
<emphasis id="0AE0EAAF683FFF89FC06F8F32DDDA728" box="[1010,1167,1829,1853]" italics="true" pageId="1" pageNumber="150">Tige principale</emphasis>
courte et épaisse, pouvant former un caudex à la manière dun
<taxonomicName id="FF944D3E683FFF89FB25F8932CE2A748" authority="Lindl." authorityName="Lindl." box="[1233,1456,1861,1885]" class="Magnoliopsida" family="Apocynaceae" genus="Pachypodium" kingdom="Plantae" order="Gentianales" pageId="1" pageNumber="150" phylum="Tracheophyta" rank="genus">
<emphasis id="0AE0EAAF683FFF89FB25F8932C33A748" box="[1233,1377,1861,1885]" italics="true" pageId="1" pageNumber="150">Pachypodium</emphasis>
Lindl.
</taxonomicName>
(
<figureCitation id="A0AF2A38683FFF89FCD8F8B32A25A768" box="[812,887,1893,1917]" captionStart="Fig" captionStartId="2.[139,166,1891,1910]" captionTargetBox="[139,1477,279,1830]" captionTargetPageId="2" captionText="Fig. 1. Euphorbia physoclada Boiss. A. Couché par le vent au cap dAmbre; B. Forme pachycaule, cap dAmbre; C. Les hypopodiums rougeâtres; D. Les brachyblastes et leurs bouquets de feuilles; E. Fleurs mâles à divers stades. [Photos: J.-P.Castillon]" figureDoi="http://doi.org/10.5281/zenodo.5754035" httpUri="https://zenodo.org/record/5754035/files/figure.png" pageId="1" pageNumber="150">fig. 1B</figureCitation>
), parfois plus allongée (jusquà 1,50 m); rugueuse, gris-marron, jusquà
<quantity id="FF6C9B58683FFF89FBC4F8532D2EA789" box="[1072,1148,1925,1949]" metricMagnitude="-1" metricUnit="m" metricValue="1.0" pageId="1" pageNumber="150" unit="cm" value="10.0">10 cm</quantity>
de diam.; périderme se détachant par plaques de lécorce de la tige.
<emphasis id="0AE0EAAF683DFF8BFD99FECC2BACA127" box="[621,766,282,306]" italics="true" pageId="3" pageNumber="152">Hypopodiums</emphasis>
rouge foncé (gris pour les plus anciens), env.
<quantity id="FF6C9B58683DFF8BFD7AFEEC2BADA144" box="[654,767,314,338]" metricMagnitude="-1" metricUnit="m" metricValue="1.25" metricValueMax="1.5" metricValueMin="1.0" pageId="3" pageNumber="152" unit="cm" value="12.5" valueMax="15.0" valueMin="10.0">10-15 cm</quantity>
×
<quantity id="FF6C9B58683DFF8BFF7AFE8C29A9A164" box="[142,251,346,370]" metricMagnitude="-3" metricUnit="m" metricValue="8.0" metricValueMax="10.0" metricValueMin="6.0" pageId="3" pageNumber="152" unit="mm" value="8.0" valueMax="10.0" valueMin="6.0">6-10 mm</quantity>
(
<figureCitation id="A0AF2A38683DFF8BFEF9FE8C2832A167" box="[269,352,346,370]" captionStart="Fig" captionStartId="2.[139,166,1891,1910]" captionTargetBox="[139,1477,279,1830]" captionTargetPageId="2" captionText="Fig. 1. Euphorbia physoclada Boiss. A. Couché par le vent au cap dAmbre; B. Forme pachycaule, cap dAmbre; C. Les hypopodiums rougeâtres; D. Les brachyblastes et leurs bouquets de feuilles; E. Fleurs mâles à divers stades. [Photos: J.-P.Castillon]" figureDoi="http://doi.org/10.5281/zenodo.5754035" httpUri="https://zenodo.org/record/5754035/files/figure.png" pageId="3" pageNumber="152">fig. 1C</figureCitation>
).
<emphasis id="0AE0EAAF683DFF8BFE8DFE8C289FA167" box="[377,461,346,370]" italics="true" pageId="3" pageNumber="152">Feuilles</emphasis>
caduques, glabres, ovales, acuminées et mucronées au sommet (mucron de 0,5-
<quantity id="FF6C9B58683DFF8BFD42FEAC2BA7A187" box="[694,757,378,402]" metricMagnitude="-3" metricUnit="m" metricValue="1.0" pageId="3" pageNumber="152" unit="mm" value="1.0">1 mm</quantity>
), 6 ×
<quantity id="FF6C9B58683DFF8BFF54FE4C2985A1A4" box="[160,215,410,434]" metricMagnitude="-2" metricUnit="m" metricValue="4.0" pageId="3" pageNumber="152" unit="cm" value="4.0">4 cm</quantity>
, portées par de courts pétioles de 1-1,5 cm, blancvert bordés de rose, et regroupées par bouquets de 5-8 au sommet des brachyblastes (
<figureCitation id="A0AF2A38683DFF8BFE4DFE0C2B5CA1E7" box="[441,526,474,498]" captionStart="Fig" captionStartId="2.[139,166,1891,1910]" captionTargetBox="[139,1477,279,1830]" captionTargetPageId="2" captionText="Fig. 1. Euphorbia physoclada Boiss. A. Couché par le vent au cap dAmbre; B. Forme pachycaule, cap dAmbre; C. Les hypopodiums rougeâtres; D. Les brachyblastes et leurs bouquets de feuilles; E. Fleurs mâles à divers stades. [Photos: J.-P.Castillon]" figureDoi="http://doi.org/10.5281/zenodo.5754035" httpUri="https://zenodo.org/record/5754035/files/figure.png" pageId="3" pageNumber="152">fig. 1D</figureCitation>
); aux faces vertes, à marge non ondulée et rose; nervation pennée, la nervure principale blanche, à 8-10 paires de nervures secondaires, plus claires, presque blanches et légèrement en relief sur la partie supérieure de la feuille, et du même vert que la feuille sur la partie inférieure.
<emphasis id="0AE0EAAF683DFF8BFE3CFDAC2B00A287" box="[456,594,634,658]" italics="true" pageId="3" pageNumber="152">Inflorescences</emphasis>
sub-terminales à plusieurs incyathescences (2-30) portant généralement un unique cyathium, parfois un dichasium (
<figureCitation id="A0AF2A38683DFF8BFDC2FD6C2BD0A2C7" box="[566,642,698,722]" captionStart="Fig" captionStartId="2.[139,166,1891,1910]" captionTargetBox="[139,1477,279,1830]" captionTargetPageId="2" captionText="Fig. 1. Euphorbia physoclada Boiss. A. Couché par le vent au cap dAmbre; B. Forme pachycaule, cap dAmbre; C. Les hypopodiums rougeâtres; D. Les brachyblastes et leurs bouquets de feuilles; E. Fleurs mâles à divers stades. [Photos: J.-P.Castillon]" figureDoi="http://doi.org/10.5281/zenodo.5754035" httpUri="https://zenodo.org/record/5754035/files/figure.png" pageId="3" pageNumber="152">fig. 1E</figureCitation>
).
<emphasis id="0AE0EAAF683DFF8BFD6CFD6C2BADA2C7" box="[664,767,698,722]" italics="true" pageId="3" pageNumber="152">Pédoncule</emphasis>
vert assez court et trapu de 0,5-
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× 1,5 mm (quand les cyathia sont regroupés par deux dans un dichasium, celui-ci est porté par un pédoncule vert de 1-1,5 cm ×
<quantity id="FF6C9B58683DFF8BFD46FCCC2BA6A327" box="[690,756,794,818]" metricMagnitude="-3" metricUnit="m" metricValue="1.0" pageId="3" pageNumber="152" unit="mm" value="1.0">1 mm</quantity>
).
<emphasis id="0AE0EAAF683DFF8BFF80FCEC298AA347" box="[116,216,826,850]" italics="true" pageId="3" pageNumber="152">Cyathium</emphasis>
en forme dentonnoir, de
<quantity id="FF6C9B58683DFF8BFE16FCEC2B73A344" box="[482,545,826,850]" metricMagnitude="-3" metricUnit="m" metricValue="4.0" pageId="3" pageNumber="152" unit="mm" value="4.0">4 mm</quantity>
de diam. et
<quantity id="FF6C9B58683DFF8BFD6BFCEC2B8DA344" box="[671,735,826,850]" metricMagnitude="-3" metricUnit="m" metricValue="3.0" pageId="3" pageNumber="152" unit="mm" value="3.0">3 mm</quantity>
de profondeur, de couleur densemble vert-jaune.
<emphasis id="0AE0EAAF683DFF8BFD9BFC8C2BACA367" box="[623,766,858,882]" italics="true" pageId="3" pageNumber="152">Cyathophylles</emphasis>
verts rectangulaires acuminés, denv. 2 ×
<quantity id="FF6C9B58683DFF8BFDC1FCAC2B25A384" box="[565,631,890,914]" metricMagnitude="-3" metricUnit="m" metricValue="1.0" pageId="3" pageNumber="152" unit="mm" value="1.0">1 mm</quantity>
, plaqués sur linvolucre, et recouvrant deux boutons axillaires, points de départ de deux cyathia avortés; 5 glandes vert-jaune (parfois 4 seulement) 2 ×
<quantity id="FF6C9B58683DFF8BFE5DFC0C28BCA3E4" box="[425,494,986,1010]" metricMagnitude="-3" metricUnit="m" metricValue="1.0" pageId="3" pageNumber="152" unit="mm" value="1.0">1 mm</quantity>
, se touchant lorsque le cyathe est jeune mais nettement séparées à lanthèse, elliptiques, soudées à la base, dépassant les cyathophylles de
<quantity id="FF6C9B58683DFF8BFF6DFBEC298DA444" box="[153,223,1082,1106]" metricMagnitude="-3" metricUnit="m" metricValue="1.0" pageId="3" pageNumber="152" unit="mm" value="1.0">1 mm</quantity>
.
<emphasis id="0AE0EAAF683DFF8BFF1FFBEC2810A444" box="[235,322,1082,1105]" italics="true" pageId="3" pageNumber="152">Bractées</emphasis>
interglandulaires quasi invisibles, très minces et collées sur les glandes, blanc-translucide, ciliées.
<emphasis id="0AE0EAAF683DFF8BFF81FBAC29A8A487" box="[117,250,1146,1170]" italics="true" pageId="3" pageNumber="152">Fleurs mâles</emphasis>
non avortées au nombre de 5-8, entourées de bractéoles plumeuses blanchâtres, portées par de courts pédicelles blancs de
<quantity id="FF6C9B58683DFF8BFEA2FB6C28CAA4C4" box="[342,408,1210,1234]" metricMagnitude="-3" metricUnit="m" metricValue="2.0" pageId="3" pageNumber="152" unit="mm" value="2.0">2 mm</quantity>
, nettement exsertes et dépassant de
<quantity id="FF6C9B58683DFF8BFF62FB0C299DA4E7" box="[150,207,1242,1266]" metricMagnitude="-3" metricUnit="m" metricValue="5.0" pageId="3" pageNumber="152" unit="mm" value="5.0">5mm</quantity>
le plan formé par les glandes.
<emphasis id="0AE0EAAF683DFF8BFDD6FB0C2B0FA4E7" box="[546,605,1242,1266]" italics="true" pageId="3" pageNumber="152">Filets</emphasis>
de
<quantity id="FF6C9B58683DFF8BFD73FB0C2B9BA4E4" box="[647,713,1242,1266]" metricMagnitude="-3" metricUnit="m" metricValue="4.0" pageId="3" pageNumber="152" unit="mm" value="4.0">4 mm</quantity>
, vert clair, portant deux anthères jaunes.
<emphasis id="0AE0EAAF683DFF8BFE04FB2C2BD7A507" box="[496,645,1274,1298]" italics="true" pageId="3" pageNumber="152">Fleurs femelles</emphasis>
inconnues.
</paragraph>
<caption id="6CEB6635683CFF8AFF7FF8B5281EA7BC" ID-DOI="http://doi.org/10.5281/zenodo.5754035" ID-Zenodo-Dep="5754035" httpUri="https://zenodo.org/record/5754035/files/figure.png" pageId="2" pageNumber="151" startId="2.[139,166,1891,1910]" targetBox="[139,1477,279,1830]" targetPageId="2">
<paragraph id="382B36BD683CFF8AFF7FF8B5281EA7BC" blockId="2.[139,1171,1891,1961]" pageId="2" pageNumber="151">
<emphasis id="0AE0EAAF683CFF8AFF7FF8B52999A763" bold="true" box="[139,203,1891,1910]" pageId="2" pageNumber="151">Fig. 1. </emphasis>
<taxonomicName id="FF944D3E683CFF8AFF3BF8B52B7DA763" authority="Boiss. A. Couche" box="[207,559,1891,1910]" class="Magnoliopsida" family="Euphorbiaceae" genus="Euphorbia" kingdom="Plantae" order="Malpighiales" pageId="2" pageNumber="151" phylum="Tracheophyta" rank="species" species="physoclada">
<emphasis id="0AE0EAAF683CFF8AFF3BF8B528C7A763" box="[207,405,1891,1910]" italics="true" pageId="2" pageNumber="151">Euphorbia physoclada</emphasis>
Boiss.
<emphasis id="0AE0EAAF683CFF8AFE20F8B528B5A763" bold="true" box="[468,487,1891,1910]" pageId="2" pageNumber="151">A.</emphasis>
Couché
</taxonomicName>
par le vent au cap dAmbre;
<emphasis id="0AE0EAAF683CFF8AFCDBF8B52A10A763" bold="true" box="[815,834,1891,1910]" pageId="2" pageNumber="151">B.</emphasis>
Forme pachycaule, cap dAmbre;
<emphasis id="0AE0EAAF683CFF8AFF7FF8AA29CCA79A" bold="true" box="[139,158,1916,1935]" pageId="2" pageNumber="151">C.</emphasis>
Les hypopodiums rougeâtres;
<emphasis id="0AE0EAAF683CFF8AFE46F8AA2897A79A" bold="true" box="[434,453,1916,1935]" pageId="2" pageNumber="151">D.</emphasis>
Les brachyblastes et leurs bouquets de feuilles;
<emphasis id="0AE0EAAF683CFF8AFC8CF8AA2AD8A79A" bold="true" box="[888,906,1916,1935]" pageId="2" pageNumber="151">E.</emphasis>
Fleurs mâles à divers stades. [Photos: J.-P.Castillon]
</paragraph>
</caption>
<paragraph id="382B36BD683DFF8BFF6EFAEC2BBDA5E7" blockId="3.[116,767,1338,1522]" pageId="3" pageNumber="152">
<emphasis id="0AE0EAAF683DFF8BFF6EFAEC2B60A547" box="[154,562,1338,1362]" italics="true" pageId="3" pageNumber="152">
Phénologie.
<taxonomicName id="FF944D3E683DFF8BFEC9FAEC2B60A547" box="[317,562,1338,1362]" class="Magnoliopsida" family="Euphorbiaceae" genus="Euphorbia" kingdom="Plantae" order="Malpighiales" pageId="3" pageNumber="152" phylum="Tracheophyta" rank="species" species="physoclada">Euphorbia physoclada</taxonomicName>
</emphasis>
semble produire deux floraisons consécutives: la première en octobre, avant lapparition des feuilles, est surtout constituée dincyathescences simples à pédoncule court, la deuxième en novembre apparaît en même temps que les premières feuilles et est constituée plutôt dincyathescences en dichasia plus longuement pédonculées.
</paragraph>
<paragraph id="382B36BD683DFF8BFF6EF9CC2B2FA6C7" blockId="3.[116,769,1562,1906]" pageId="3" pageNumber="152">
<emphasis id="0AE0EAAF683DFF8BFF6EF9CC2860A627" box="[154,306,1562,1586]" italics="true" pageId="3" pageNumber="152">Observations. </emphasis>
<bibRefCitation id="5C054B4C683DFF8BFEC3F9CC288DA627" author="BOISSIER, E." box="[311,479,1562,1586]" pageId="3" pageNumber="152" refId="ref4855" refString="BOISSIER, E. (1860). Centuria Euphorbiarum. Hermann, Leipzing." type="book" year="1860">BOISSIER (1860)</bibRefCitation>
donne une localité dorigine assez vague pour
<emphasis id="0AE0EAAF683DFF8BFEC8F9ED2883A647" box="[316,465,1594,1618]" italics="true" pageId="3" pageNumber="152">Boivin 2649:</emphasis>
«in parte orientali insulae
<collectingCountry id="4083762D683DFF8BFF82F98C29A4A667" box="[118,246,1626,1650]" name="Madagascar" pageId="3" pageNumber="152">Madagascar</collectingCountry>
» copiée de lholotype déposé à G [G00407234]. Lisotype conservé à P [P00224804] de la première série de Boivin donne cependant une localité plus précise: «Rochers maritimes, Nord de
<collectingCountry id="4083762D683DFF8BFEBDF96C289AA6C7" box="[329,456,1722,1746]" name="Madagascar" pageId="3" pageNumber="152">Madagascar</collectingCountry>
: Baie de Rigny».
</paragraph>
<paragraph id="382B36BD683DFF8BFF6EF90C2B7FA767" blockId="3.[116,769,1562,1906]" pageId="3" pageNumber="152">
Les auteurs qui ont par la suite travaillé sur
<taxonomicName id="FF944D3E683DFF8BFD94F90D2BB7A6E7" box="[608,741,1754,1778]" class="Magnoliopsida" family="Euphorbiaceae" genus="Euphorbia" kingdom="Plantae" order="Malpighiales" pageId="3" pageNumber="152" phylum="Tracheophyta" rank="species" species="physoclada">
<emphasis id="0AE0EAAF683DFF8BFD94F90D2BB7A6E7" box="[608,741,1754,1778]" italics="true" pageId="3" pageNumber="152">E. physoclada</emphasis>
</taxonomicName>
se sont dabord trompés sur la localité
<typeStatus id="E72F881F683DFF8BFE10F92C2B43A707" box="[484,529,1786,1810]" pageId="3" pageNumber="152">type</typeStatus>
(
<collectingCountry id="4083762D683DFF8BFDEAF92C2B2BA707" box="[542,633,1786,1810]" name="Mayotte" pageId="3" pageNumber="152">Mayotte</collectingCountry>
, Bouzi), puis ont étendu la localisation de la plante jusquà Morondava et jusquaux hauts-plateaux (Ambositra), introduisant une grande incertitude dans lidentité de cette plante.
</paragraph>
<paragraph id="382B36BD683DFF8BFCBEFECC2DB0A287" blockId="3.[804,1456,282,658]" pageId="3" pageNumber="152">
Nous ne sommes pas en mesure daffirmer que la collection
<emphasis id="0AE0EAAF683DFF8BFCD0FEED2ACEA147" box="[804,924,315,338]" italics="true" pageId="3" pageNumber="152">Boivin s.n.</emphasis>
datée de 1850, en provenance de
<collectingCountry id="4083762D683DFF8BFADEFEEC2CD8A147" box="[1322,1418,314,338]" name="Mayotte" pageId="3" pageNumber="152">Mayotte</collectingCountry>
(P [P00078076]) rattachée à cette espèce par
<bibRefCitation id="5C054B4C683DFF8BFB0BFE8C2CE2A167" author="BAILLON, H." box="[1279,1456,346,370]" pageId="3" pageNumber="152" pagination="139 - 173" refId="ref4755" refString="BAILLON, H. (1861). Species Euphorbiacearum. A. Euphorbiacees africaines Recueil Observ. Bot. 1: 139 - 173." type="journal article" year="1861">BAILLON (1861)</bibRefCitation>
et
<bibRefCitation id="5C054B4C683DFF8BFCB0FEAC2D55A187" author="BOISSIER, E." box="[836,1031,378,402]" pageId="3" pageNumber="152" pagination="3 - 188" refId="ref4870" refString="BOISSIER, E. (1862). Euphorbieae. In: CANDOLLE, A. P. DE (ed.), Prodr. 15 (2): 3 - 188. Masson, Paris." type="journal article" year="1862">BOISSIER (1862)</bibRefCitation>
doit effectivement être rattachée à
<taxonomicName id="FF944D3E683DFF8BFCD0FE4D2AE0A1A7" box="[804,946,410,434]" class="Magnoliopsida" family="Euphorbiaceae" genus="Euphorbia" kingdom="Plantae" order="Malpighiales" pageId="3" pageNumber="152" phylum="Tracheophyta" rank="species" species="physoclada">
<emphasis id="0AE0EAAF683DFF8BFCD0FE4D2AE0A1A7" box="[804,946,410,434]" italics="true" pageId="3" pageNumber="152">E. physoclada</emphasis>
</taxonomicName>
. Il en est de même pour les collections citées par DENIS en 1921 étendant la distribution de
<taxonomicName id="FF944D3E683DFF8BFAD0FE6D2CFCA1C7" box="[1316,1454,442,466]" class="Magnoliopsida" family="Euphorbiaceae" genus="Euphorbia" kingdom="Plantae" order="Malpighiales" pageId="3" pageNumber="152" phylum="Tracheophyta" rank="species" species="physoclada">
<emphasis id="0AE0EAAF683DFF8BFAD0FE6D2CFCA1C7" box="[1316,1454,442,466]" italics="true" pageId="3" pageNumber="152">E. physoclada</emphasis>
</taxonomicName>
jusquà Morondava (par ex.:
<emphasis id="0AE0EAAF683DFF8BFBA8FE0C2D9AA1E7" box="[1116,1224,474,498]" italics="true" pageId="3" pageNumber="152">Grevé 219</emphasis>
[P00224802]). Nous avons encore plus de réserves quant aux spécimens cités par
<bibRefCitation id="5C054B4C683DFF8BFCD1FDCC2A86A227" author="LEANDRI, J." box="[805,980,538,562]" pageId="3" pageNumber="152" pagination="64 - 79" refId="ref5109" refString="LEANDRI, J. (1945). Contribution a l'etude des Euphorbiacees de Madagascar. IX. Groupe de l'Euphorbia pyrifolia et observations sur la section Goniostema. Notul. Syst. (Paris) 12: 64 - 79." type="journal article" year="1945">LEANDRI (1945)</bibRefCitation>
en provenance des hauts-plateaux malgaches comme par exemple celui des environs dAmbositra (
<emphasis id="0AE0EAAF683DFF8BFA92FDED2AA0A267" italics="true" pageId="3" pageNumber="152">Perrier de la Bâthie 18612</emphasis>
[P00224808]) et pouvons exclure avec certitude ceux provenant de lIle
<collectingCountry id="4083762D683DFF8BFB77FDAC2D8CA287" box="[1155,1246,634,658]" name="Mauritius" pageId="3" pageNumber="152">Maurice</collectingCountry>
.
</paragraph>
</subSubSection>
</treatment>
</document>