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<document id="56983003546C4E1ED13573DE4FE2D5CF" ID-DOI="10.11646/phytotaxa.436.3.1" ID-ISSN="1179-3163" ID-Zenodo-Dep="13874448" IM.bibliography_approvedBy="felipe" IM.illustrations_approvedBy="felipe" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="GgImagineBatch" IM.taxonomicNames_approvedBy="felipe" IM.treatmentCitations_approvedBy="felipe" IM.treatments_approvedBy="felipe" checkinTime="1727817160391" checkinUser="felipe" docAuthor="Bruyns, Peter V., Klak, Cornelia &amp; Hanáček, Pavel" docDate="2020" docId="03A6CB7E023C8E35DC9DFAC7FC6E6DF3" docLanguage="en" docName="phytotaxa.436.3.1.pdf" docOrigin="Phytotaxa 436 (3)" docSource="http://dx.doi.org/10.11646/phytotaxa.436.3.1" docStyle="DocumentStyle:96748F8F1B6C902996E134952A3A36B9.13:Phytotaxa.2014-.journal_article" docStyleId="96748F8F1B6C902996E134952A3A36B9" docStyleName="Phytotaxa.2014-.journal_article" docStyleVersion="13" docTitle="Euphorbia steelpoortensis Bruyns 2020, sp. nov." docType="treatment" docVersion="2" lastPageNumber="218" masterDocId="FF9FB30602338E24DC15FFD9FFB86F27" masterDocTitle="A review of the Euphorbia schinzii-complex (Euphorbiaceae) in southern Africa" masterLastPageNumber="221" masterPageNumber="201" pageNumber="216" updateTime="1727819793323" updateUser="ExternalLinkService" zenodo-license-figures="UNSPECIFIED" zenodo-license-treatments="UNSPECIFIED">
<mods:mods id="3E5AF3F4D5E8773EF09BB4E3066C38E9" xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo id="DCC1D3B1C90AAAB103C8D9C9C6CBEB8C">
<mods:title id="5F2D135FDC8981C8661C4424D745276E">A review of the Euphorbia schinzii-complex (Euphorbiaceae) in southern Africa</mods:title>
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<mods:name id="CA87D43950A96EE5CBDA8017716554E3" type="personal">
<mods:role id="1225752E7220C0ACD48FC17489997C84">
<mods:roleTerm id="80E0F970D0B50A8DDC33CD47AA9BB006">Author</mods:roleTerm>
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<mods:namePart id="D684FDCFB93B3EB7007F3D6C045B3BE9">Bruyns, Peter V.</mods:namePart>
<mods:affiliation id="B44E39080CCA8A93CC1B72DD44694CCA">Bolus Herbarium, University of Cape Town, 7701 Rondebosch, South Africa</mods:affiliation>
<mods:nameIdentifier id="F32E1E8429573458BDA69ADBCC367482" type="email">peter.bruyns@uct.ac.za</mods:nameIdentifier>
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<mods:namePart id="7EA1750F2E990BDA8E3A90C9CD17591D">Klak, Cornelia</mods:namePart>
<mods:affiliation id="AE9954CD04A6D534927545C95923406A">Bolus Herbarium, University of Cape Town, 7701 Rondebosch, South Africa</mods:affiliation>
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<mods:namePart id="C44A2D97ED528F03EFAE27C3E628540C">Hanáček, Pavel</mods:namePart>
<mods:affiliation id="040A7D7357E9F6DF26CD5795A0E4B2FE">Department of Plant Biology, Mendel University in Brno, Zemědělská 1, 613 00 Brno, Czechia</mods:affiliation>
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<mods:title id="0F7929C5F732A8983F76BF27E307D9DE">Phytotaxa</mods:title>
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<mods:part id="0CE6DD1D33F6B56DAD578A3E12C659C5">
<mods:date id="880AAE05D707E05FC7608EA65EAB8297">2020</mods:date>
<mods:detail id="064A7A3F2F5553916F0F21B870243AFB" type="pubDate">
<mods:number id="3BE6CD1647DFE8A9935506FA5599309E">2020-03-19</mods:number>
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<mods:number id="4E312C8588DFA6A652222E9BB3DE550C">436</mods:number>
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<mods:number id="871FB8E4395C6F61DBBB74FCA4CA0E49">3</mods:number>
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<mods:url id="EEC188DA48FE616AC356EB4AD5EC094A">http://dx.doi.org/10.11646/phytotaxa.436.3.1</mods:url>
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<mods:identifier id="E6D6BE8F551B472C1DE60CEFD3FA9562" type="DOI">10.11646/phytotaxa.436.3.1</mods:identifier>
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<treatment id="03A6CB7E023C8E35DC9DFAC7FC6E6DF3" ID-DOI="http://doi.org/10.5281/zenodo.13874494" ID-Zenodo-Dep="13874494" LSID="urn:lsid:plazi:treatment:03A6CB7E023C8E35DC9DFAC7FC6E6DF3" httpUri="http://treatment.plazi.org/id/03A6CB7E023C8E35DC9DFAC7FC6E6DF3" lastPageId="17" lastPageNumber="218" pageId="15" pageNumber="216">
<subSubSection id="C31529E3023C8E2BDC9DFAC7FD346A1F" box="[136,652,1310,1337]" pageId="15" pageNumber="216" type="nomenclature">
<paragraph id="8BB07A68023C8E2BDC9DFAC7FD346A1F" blockId="15.[136,652,1310,1337]" box="[136,652,1310,1337]" pageId="15" pageNumber="216">
<heading id="D0F8CD04023C8E2BDC9DFAC7FD346A1F" box="[136,652,1310,1337]" fontSize="11" level="2" pageId="15" pageNumber="216" reason="4">
<emphasis id="B97BA67A023C8E2BDC9DFAC7FF256A1F" bold="true" box="[136,157,1310,1336]" pageId="15" pageNumber="216">9.</emphasis>
<taxonomicName id="4C0F01EB023C8E2BDCB1FAC7FD946A1E" ID-CoL="9V4JV" authority="Bruyns" authorityName="Bruyns" authorityYear="2020" box="[164,556,1310,1337]" class="Magnoliopsida" family="Euphorbiaceae" genus="Euphorbia" kingdom="Plantae" order="Malpighiales" pageId="15" pageNumber="216" phylum="Tracheophyta" rank="species" species="steelpoortensis" status="sp. nov.">
<emphasis id="B97BA67A023C8E2BDCB1FAC7FE6A6A1E" bold="true" box="[164,466,1310,1337]" italics="true" pageId="15" pageNumber="216">Euphorbia steelpoortensis</emphasis>
Bruyns
</taxonomicName>
,
<emphasis id="B97BA67A023C8E2BDE22FAC6FD346A1F" box="[567,652,1311,1336]" italics="true" pageId="15" pageNumber="216">
<taxonomicNameLabel id="A2481B01023C8E2BDE22FAC6FD346A1F" box="[567,652,1311,1336]" pageId="15" pageNumber="216" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
</heading>
</paragraph>
</subSubSection>
<subSubSection id="C31529E3023C8E2BDC9DFABAFC336701" pageId="15" pageNumber="216" type="description">
<paragraph id="8BB07A68023C8E2BDC9DFABAFCBA6ABA" blockId="15.[136,1452,1379,1437]" pageId="15" pageNumber="216">
This new species differs from
<taxonomicName id="4C0F01EB023C8E2BDDAEFABDFDD16A5F" authorityName="Schweickerdt &amp; Letty" authorityYear="1933" box="[443,617,1379,1401]" class="Magnoliopsida" family="Euphorbiaceae" genus="Euphorbia" kingdom="Plantae" order="Malpighiales" pageId="15" pageNumber="216" phylum="Tracheophyta" rank="species" species="lydenburgensis">
<emphasis id="B97BA67A023C8E2BDDAEFABDFDD16A5F" box="[443,617,1379,1401]" italics="true" pageId="15" pageNumber="216">E. lydenburgensis</emphasis>
</taxonomicName>
and
<taxonomicName id="4C0F01EB023C8E2BDE8BFABDFD446A5E" authorityName="Bruyns" authorityYear="2020" box="[670,764,1380,1401]" class="Magnoliopsida" family="Euphorbiaceae" genus="Euphorbia" kingdom="Plantae" order="Malpighiales" pageId="15" pageNumber="216" phylum="Tracheophyta" rank="species" species="pisima">
<emphasis id="B97BA67A023C8E2BDE8BFABDFD446A5E" box="[670,764,1380,1401]" italics="true" pageId="15" pageNumber="216">E. pisima</emphasis>
</taxonomicName>
by the rhizomatous outer branches, the bluish green to purple-green branches, the shorter spines and the shorter stipular prickles.
</paragraph>
<paragraph id="8BB07A68023C8E2BDC9DFA16FA846AC3" blockId="15.[136,1340,1487,1509]" box="[136,1340,1487,1509]" pageId="15" pageNumber="216">
Type:—
<collectingCountry id="F3183AF8023C8E2BDCC0FA16FE3E6AC3" box="[213,390,1487,1508]" name="South Africa" pageId="15" pageNumber="216">SOUTH AFRICA</collectingCountry>
.
<collectingRegion id="49CBB48A023C8E2BDD9AFA16FE536AC2" box="[399,491,1487,1509]" country="South Africa" name="Limpopo" pageId="15" pageNumber="216">Limpopo</collectingRegion>
: Steelpoort distr., turnoff to Penge,
<date id="FFB15CA8023C8E2BDF2AFA16FC616AC3" box="[831,985,1487,1508]" pageId="15" pageNumber="216" value="1973-08-20">20 August 1973</date>
,
<emphasis id="B97BA67A023C8E2BDFF6FA16FB976AC3" box="[995,1071,1487,1508]" italics="true" pageId="15" pageNumber="216">Nel 337</emphasis>
(
<typeStatus id="54B4C4CA023C8E2BD82EFA16FB296AC2" box="[1083,1169,1487,1509]" pageId="15" pageNumber="216" type="holotype">holotype</typeStatus>
NBG!).
<figureCitation id="133466ED023C8E2BD8F0FA16FAA66AC3" box="[1253,1310,1487,1509]" captionStart="FIGURE 8" captionStartId="16.[136,229,987,1009]" captionTargetBox="[231,1410,221,962]" captionTargetId="figure-29@16.[151,1436,190,962]" captionTargetPageId="16" captionText="FIGURE 8. Distribution of Euphorbia steelpoortensis." figureDoi="http://doi.org/10.5281/zenodo.13874480" httpUri="https://zenodo.org/record/13874480/files/figure.png" pageId="15" pageNumber="216">Fig. 8</figureCitation>
,
<figureCitation id="133466ED023C8E2BD93CFA16FA8F6AC3" box="[1321,1335,1487,1508]" captionStart="FIGURE 9" captionStartId="16.[136,229,1573,1595]" captionTargetBox="[164,1423,1040,1541]" captionTargetId="figure-42@16.[151,1436,1034,1549]" captionTargetPageId="16" captionText="FIGURE 9. Euphorbia steelpoortensis. A, young spines and leaf-rudiment from above (scale 2 mm, as for B–E). B, young spines and leaf-rudiment from side. C, spine-complex from above showing shape of spine-shield (dotted line). D, side view of part of cyme in female stage. E, face view of cyathium in late male stage. F, anthers and bracteole (scale 1 mm, as for G, H). G, H, female floret. Drawn by P. Bruyns from:A–G, Bruyns 13555, Burgersfort, Olifants River Valley, South Africa; H, SW of Haenertsburg, Winter 5196 (NBG)." figureDoi="http://doi.org/10.5281/zenodo.13874484" httpUri="https://zenodo.org/record/13874484/files/figure.png" pageId="15" pageNumber="216">9</figureCitation>
.
</paragraph>
<paragraph id="8BB07A68023C8E2BDC9DF9CAFC336701" blockId="15.[136,1452,1555,2086]" pageId="15" pageNumber="216">
Bisexual succulent 0.1–0.3(–0.4) ×
<quantity id="4CF7D78D023C8E2BDE01F9CAFD2C6909" box="[532,660,1555,1582]" metricMagnitude="-1" metricUnit="m" metricValue="3.25" metricValueMax="5.0" metricValueMin="1.5" pageId="15" pageNumber="216" unit="m" value="0.325" valueMax="0.5" valueMin="0.15">0.15–0.5 m</quantity>
, with outer branches often rhizomatous.
<emphasis id="B97BA67A023C8E2BD842F9CAFB79690A" box="[1111,1217,1555,1581]" italics="true" pageId="15" pageNumber="216">Branches</emphasis>
50–300 × 5–12(–15) mm, smooth, bluish to purplish green;
<emphasis id="B97BA67A023C8E2BDE22F9EEFD256976" box="[567,669,1591,1617]" italics="true" pageId="15" pageNumber="216">tubercles</emphasis>
in decussate pairs fused into 4 occasionally somewhat rounded angles with surface slightly concave to slightly convex between angles, with spine-shields 4–8(–9) mm long, 1–2 ×
<quantity id="4CF7D78D023C8E2BD994F985FF0C69BD" metricMagnitude="-3" metricUnit="m" metricValue="2.5" metricValueMax="3.0" metricValueMin="2.0" pageId="15" pageNumber="216" unit="mm" value="2.5" valueMax="3.0" valueMin="2.0">2–3 mm</quantity>
above spines and 1–4(–5) mm long and often ± equally broad below spines as above, remaining well separated, spines 3–8(–12) mm long;
<emphasis id="B97BA67A023C8E2BDDD3F97AFDD1699A" box="[454,617,1699,1725]" italics="true" pageId="15" pageNumber="216">leaf-rudiments</emphasis>
± 1 ×
<quantity id="4CF7D78D023C8E2BDED7F97AFC826999" box="[706,826,1699,1726]" metricMagnitude="-3" metricUnit="m" metricValue="1.25" metricValueMax="1.5" metricValueMin="1.0" pageId="15" pageNumber="216" unit="mm" value="1.25" valueMax="1.5" valueMin="1.0">1–1.5 mm</quantity>
, with minute brown stipular prickles ±
<quantity id="4CF7D78D023C8E2BD91BF97AFAD06999" box="[1294,1384,1699,1726]" metricMagnitude="-4" metricUnit="m" metricValue="5.0" pageId="15" pageNumber="216" unit="mm" value="0.5">0.5 mm</quantity>
long.
<emphasis id="B97BA67A023C8E2BDC9DF91EFE8269C6" box="[136,314,1735,1761]" italics="true" pageId="15" pageNumber="216">Synflorescences</emphasis>
many per branch usually towards apex, each a solitary cyme in axil of tubercle, on short peduncle ±
<quantity id="4CF7D78D023C8E2BDC9DF935FF726821" box="[136,202,1772,1798]" metricMagnitude="-3" metricUnit="m" metricValue="1.0" pageId="15" pageNumber="216" unit="mm" value="1.0">1 mm</quantity>
long, each cyme with 3 transversely disposed cyathia, central male, lateral 2 bisexual and developing slightly later each on peduncle ±
<quantity id="4CF7D78D023C8E2BDDBEF8C9FE56680D" box="[427,494,1808,1834]" metricMagnitude="-3" metricUnit="m" metricValue="2.0" pageId="15" pageNumber="216" unit="mm" value="2.0">2 mm</quantity>
long and thick, with 2 ovate bracts ± 1 ×
<quantity id="4CF7D78D023C8E2BDFCDF8C9FBA3680D" box="[984,1051,1808,1834]" metricMagnitude="-3" metricUnit="m" metricValue="2.0" pageId="15" pageNumber="216" unit="mm" value="2.0">2 mm</quantity>
subtending lateral cyathia;
<emphasis id="B97BA67A023C8E2BD94CF8D6FA13680E" box="[1369,1451,1807,1833]" italics="true" pageId="15" pageNumber="216">cyathia</emphasis>
shallowly cupular, glabrous,
<quantity id="4CF7D78D023C8E2BDDC4F8EAFDFD6869" box="[465,581,1843,1870]" metricMagnitude="-3" metricUnit="m" metricValue="4.25" metricValueMax="5.0" metricValueMin="3.5" pageId="15" pageNumber="216" unit="mm" value="4.25" valueMax="5.0" valueMin="3.5">3.5–5 mm</quantity>
broad (
<quantity id="4CF7D78D023C8E2BDE8BF8EAFD4F6869" box="[670,759,1843,1870]" metricMagnitude="-3" metricUnit="m" metricValue="1.5" pageId="15" pageNumber="216" unit="mm" value="1.5">1.5 mm</quantity>
long below insertion of glands), with 5 pale yellow obovate lobes with deeply incised margins, bright yellow;
<emphasis id="B97BA67A023C8E2BDEAEF88EFCBE6856" box="[699,774,1879,1905]" italics="true" pageId="15" pageNumber="216">glands</emphasis>
5, transversely rectangular to nearly square and contiguous, ±
<quantity id="4CF7D78D023C8E2BDCB4F8A5FF5C68B1" box="[161,228,1916,1942]" metricMagnitude="-3" metricUnit="m" metricValue="2.0" pageId="15" pageNumber="216" unit="mm" value="2.0">2 mm</quantity>
broad, bright yellow, ascending-spreading, inner margins flat, outer margins entire and slightly ascending, surface between two margins dull;
<emphasis id="B97BA67A023C8E2BDE04F879FDD3689E" box="[529,619,1952,1977]" italics="true" pageId="15" pageNumber="216">stamens</emphasis>
glabrous, bracteoles enveloping groups of males, with finely divided tips, glabrous;
<emphasis id="B97BA67A023C8E2BDCEDF81DFE8068FA" box="[248,312,1988,2013]" italics="true" pageId="15" pageNumber="216">ovary</emphasis>
obtusely 3-angled, glabrous, slightly reddish green near top, raised on pedicel
<quantity id="4CF7D78D023C8E2BD8A4F81AFA9B68F9" box="[1201,1315,1987,2014]" metricMagnitude="-3" metricUnit="m" metricValue="1.25" metricValueMax="1.5" metricValueMin="1.0" pageId="15" pageNumber="216" unit="mm" value="1.25" valueMax="1.5" valueMin="1.0">1–1.5 mm</quantity>
long; styles
<quantity id="4CF7D78D023C8E2BDC9DF831FF5D6725" box="[136,229,2024,2050]" metricMagnitude="-3" metricUnit="m" metricValue="2.0" metricValueMax="3.0" metricValueMin="1.0" pageId="15" pageNumber="216" unit="mm" value="2.0" valueMax="3.0" valueMin="1.0">1–3 mm</quantity>
long, branched to just above base.
<emphasis id="B97BA67A023C8E2BDE7BF83EFD726726" box="[622,714,2023,2049]" italics="true" pageId="15" pageNumber="216">Capsule</emphasis>
<quantity id="4CF7D78D023C8E2BDEC4F831FC966725" box="[721,814,2024,2050]" metricMagnitude="-3" metricUnit="m" metricValue="3.5" metricValueMax="4.0" metricValueMin="3.0" pageId="15" pageNumber="216" unit="mm" value="3.5" valueMax="4.0" valueMin="3.0">3–4 mm</quantity>
in diam., obtusely 3-angled, glabrous, slightly raised ±
<quantity id="4CF7D78D023C8E2BD988F831FF0C6701" metricMagnitude="-3" metricUnit="m" metricValue="2.0" pageId="15" pageNumber="216" unit="mm" value="2.0">2 mm</quantity>
inside remains of cyathium and peduncle elongating to
<quantity id="4CF7D78D023C8E2BDF32F7D2FC3F6701" box="[807,903,2059,2086]" metricMagnitude="-3" metricUnit="m" metricValue="3.5" metricValueMax="5.0" metricValueMin="2.0" pageId="15" pageNumber="216" unit="mm" value="3.5" valueMax="5.0" valueMin="2.0">2–5 mm</quantity>
.
</paragraph>
</subSubSection>
<caption id="DF702AE002238E34DC9DFC02FD226CD7" ID-DOI="http://doi.org/10.5281/zenodo.13874480" ID-Zenodo-Dep="13874480" box="[136,666,987,1009]" httpUri="https://zenodo.org/record/13874480/files/figure.png" pageId="16" pageNumber="217" startId="16.[136,229,987,1009]" targetBox="[231,1410,221,962]" targetPageId="16" targetType="figure">
<paragraph id="8BB07A6802238E34DC9DFC02FD226CD7" blockId="16.[136,666,987,1009]" box="[136,666,987,1009]" pageId="16" pageNumber="217">
<emphasis id="B97BA67A02238E34DC9DFC02FF456CD7" bold="true" box="[136,253,987,1009]" pageId="16" pageNumber="217">FIGURE 8.</emphasis>
Distribution of
<taxonomicName id="4C0F01EB02238E34DD82FC02FD2C6CD7" authorityName="Bruyns" authorityYear="2020" box="[407,660,987,1008]" class="Magnoliopsida" family="Euphorbiaceae" genus="Euphorbia" kingdom="Plantae" order="Malpighiales" pageId="16" pageNumber="217" phylum="Tracheophyta" rank="species" species="steelpoortensis">
<emphasis id="B97BA67A02238E34DD82FC02FD2C6CD7" box="[407,660,987,1008]" italics="true" pageId="16" pageNumber="217">Euphorbia steelpoortensis</emphasis>
</taxonomicName>
.
</paragraph>
</caption>
<caption id="DF702AE002238E34DC9DF9FCFADC6980" ID-DOI="http://doi.org/10.5281/zenodo.13874484" ID-Zenodo-Dep="13874484" httpUri="https://zenodo.org/record/13874484/files/figure.png" pageId="16" pageNumber="217" startId="16.[136,229,1573,1595]" targetBox="[164,1423,1040,1541]" targetPageId="16" targetType="figure">
<paragraph id="8BB07A6802238E34DC9DF9FCFADC6980" blockId="16.[136,1452,1573,1704]" pageId="16" pageNumber="217">
<emphasis id="B97BA67A02238E34DC9DF9FCFF47691C" bold="true" box="[136,255,1573,1595]" pageId="16" pageNumber="217">FIGURE 9.</emphasis>
<taxonomicName id="4C0F01EB02238E34DD13F9FFFDBC691C" authorityName="Bruyns" authorityYear="2020" box="[262,516,1574,1595]" class="Magnoliopsida" family="Euphorbiaceae" genus="Euphorbia" kingdom="Plantae" order="Malpighiales" pageId="16" pageNumber="217" phylum="Tracheophyta" rank="species" species="steelpoortensis">
<emphasis id="B97BA67A02238E34DD13F9FFFDBC691C" box="[262,516,1574,1595]" italics="true" pageId="16" pageNumber="217">Euphorbia steelpoortensis</emphasis>
</taxonomicName>
. A, young spines and leaf-rudiment from above (scale 2 mm, as for B–E). B, young spines and leaf-rudiment from side. C, spine-complex from above showing shape of spine-shield (dotted line). D, side view of part of cyme in female stage. E, face view of cyathium in late male stage. F, anthers and bracteole (scale 1 mm, as for G, H). G, H, female floret. Drawn by P. Bruyns from: A–G,
<emphasis id="B97BA67A02238E34DD5DF94BFE766980" box="[328,462,1682,1703]" italics="true" pageId="16" pageNumber="217">Bruyns 13555</emphasis>
, Burgersfort, Olifants River Valley, South Africa; H, SW of Haenertsburg,
<emphasis id="B97BA67A02238E34D88AF94BFAAD6980" box="[1183,1301,1682,1703]" italics="true" pageId="16" pageNumber="217">Winter 5196</emphasis>
(NBG).
</paragraph>
</caption>
<subSubSection id="C31529E302238E34DCA8F90FFAF0687B" pageId="16" pageNumber="217" type="distribution">
<paragraph id="8BB07A6802238E34DCA8F90FFAF0687B" blockId="16.[136,1452,1750,2065]" pageId="16" pageNumber="217">
<emphasis id="B97BA67A02238E34DCA8F90FFE6669D7" bold="true" box="[189,478,1750,1776]" pageId="16" pageNumber="217">Distribution &amp; Habitat:</emphasis>
—
<taxonomicName id="4C0F01EB02238E34DDEFF90FFC9B69D7" authorityName="Bruyns" authorityYear="2020" box="[506,803,1750,1776]" class="Magnoliopsida" family="Euphorbiaceae" genus="Euphorbia" kingdom="Plantae" order="Malpighiales" pageId="16" pageNumber="217" phylum="Tracheophyta" rank="species" species="steelpoortensis">
<emphasis id="B97BA67A02238E34DDEFF90FFC9B69D7" box="[506,803,1750,1776]" italics="true" pageId="16" pageNumber="217">Euphorbia steelpoortensis</emphasis>
</taxonomicName>
is mainly found in the valley of the Olifants River from around Steelpoort and Burgersfort to near Chuniespoort, with an outlying population along the ridge of the Strydpoort Mountains south-west of Haenertzburg. Plants grow among rocks and bushes in stony ground in the valleys but may also occur on steep slopes among tufts of grass or in shallow pockets of soil in outcrops of dolomite (
<figureCitation id="133466ED02238E34D8E3F89BFA82687B" box="[1270,1338,1858,1884]" captionStart="FIGURE 8" captionStartId="16.[136,229,987,1009]" captionTargetBox="[231,1410,221,962]" captionTargetId="figure-29@16.[151,1436,190,962]" captionTargetPageId="16" captionText="FIGURE 8. Distribution of Euphorbia steelpoortensis." figureDoi="http://doi.org/10.5281/zenodo.13874480" httpUri="https://zenodo.org/record/13874480/files/figure.png" pageId="16" pageNumber="217">Fig. 8</figureCitation>
).
</paragraph>
</subSubSection>
<subSubSection id="C31529E302238E35DCA8F8BFFC6E6DF3" lastPageId="17" lastPageNumber="218" pageId="16" pageNumber="217" type="discussion">
<paragraph id="8BB07A6802238E35DCA8F8BFFE476E6F" blockId="16.[136,1452,1750,2065]" lastBlockId="17.[136,1452,158,725]" lastPageId="17" lastPageNumber="218" pageId="16" pageNumber="217">
<emphasis id="B97BA67A02238E34DCA8F8BFFEFD68A7" bold="true" box="[189,325,1894,1920]" pageId="16" pageNumber="217">Discussion:</emphasis>
—Plants that occur in low-lying areas have a rhizomatous habit with branches to
<quantity id="4CF7D78D02238E34D8CAF8BFFA9D68A6" box="[1247,1317,1894,1921]" metricMagnitude="-1" metricUnit="m" metricValue="2.0" pageId="16" pageNumber="217" unit="cm" value="20.0">20 cm</quantity>
long, while those from high elevations in the Strydpoort Mountains are hardly rhizomatous at all and have short branches, rarely more than
<quantity id="4CF7D78D02238E34DD1DF877FEFB68EE" box="[264,323,1966,1993]" metricMagnitude="-2" metricUnit="m" metricValue="5.0" pageId="16" pageNumber="217" unit="cm" value="5.0">5 cm</quantity>
tall. In all of them the branches are grey-green, which makes them easy to distinguish from
<taxonomicName id="4C0F01EB02238E34D986F876FE8968CB" authorityName="Schweickerdt &amp; Letty" authorityYear="1933" class="Magnoliopsida" family="Euphorbiaceae" genus="Euphorbia" kingdom="Plantae" order="Malpighiales" pageId="16" pageNumber="217" phylum="Tracheophyta" rank="species" species="lydenburgensis">
<emphasis id="B97BA67A02238E34D986F876FE8968CB" italics="true" pageId="16" pageNumber="217">E. lydenburgensis</emphasis>
</taxonomicName>
and from
<taxonomicName id="4C0F01EB02238E34DDB4F80AFDB268CB" authorityName="Bruyns" authorityYear="2020" box="[417,522,2003,2028]" class="Magnoliopsida" family="Euphorbiaceae" genus="Euphorbia" kingdom="Plantae" order="Malpighiales" pageId="16" pageNumber="217" phylum="Tracheophyta" rank="species" species="pisima">
<emphasis id="B97BA67A02238E34DDB4F80AFDB268CB" box="[417,522,2003,2028]" italics="true" pageId="16" pageNumber="217">E. pisima</emphasis>
</taxonomicName>
. In some populations of
<taxonomicName id="4C0F01EB02238E34DF0EF80AFC5968CB" authorityName="Bruyns" authorityYear="2020" box="[795,993,2002,2029]" class="Magnoliopsida" family="Euphorbiaceae" genus="Euphorbia" kingdom="Plantae" order="Malpighiales" pageId="16" pageNumber="217" phylum="Tracheophyta" rank="species" species="steelpoortensis">
<emphasis id="B97BA67A02238E34DF0EF80AFC9468CB" box="[795,812,2003,2028]" italics="true" pageId="16" pageNumber="217">E</emphasis>
.
<emphasis id="B97BA67A02238E34DF2CF80BFC5968CB" box="[825,993,2002,2028]" italics="true" pageId="16" pageNumber="217">steelpoortensis</emphasis>
</taxonomicName>
the branches are relatively rounded, with low tubercles (e.g.,
<emphasis id="B97BA67A02238E34DD71F82EFDB86737" box="[356,512,2038,2064]" italics="true" pageId="16" pageNumber="217">Bruyns 12062</emphasis>
(BOL)) and these may look considerably like
<taxonomicName id="4C0F01EB02238E34D813F82EFB1B6737" box="[1030,1187,2039,2064]" class="Magnoliopsida" family="Euphorbiaceae" genus="Euphorbia" kingdom="Plantae" order="Malpighiales" pageId="16" pageNumber="217" phylum="Tracheophyta" rank="species" species="aeruginosa">
<emphasis id="B97BA67A02238E34D813F82EFB1B6737" box="[1030,1187,2039,2064]" italics="true" pageId="16" pageNumber="217">E. aeruginosa</emphasis>
</taxonomicName>
, but they differ from
<taxonomicName id="4C0F01EB02238E35D986F82EFEBE6F9F" class="Magnoliopsida" family="Euphorbiaceae" genus="Euphorbia" kingdom="Plantae" lastPageId="17" lastPageNumber="218" order="Malpighiales" pageId="16" pageNumber="217" phylum="Tracheophyta" rank="species" species="aeruginosa">
<emphasis id="B97BA67A02238E35D986F82EFEBE6F9F" italics="true" lastPageId="17" lastPageNumber="218" pageId="16" pageNumber="217">E. aeruginosa</emphasis>
</taxonomicName>
in the longer pedicel under the female florets. In
<taxonomicName id="4C0F01EB02228E35DF39FF46FC4B6F9F" authorityName="Bruyns" authorityYear="2020" box="[812,1011,158,185]" class="Magnoliopsida" family="Euphorbiaceae" genus="Euphorbia" kingdom="Plantae" order="Malpighiales" pageId="17" pageNumber="218" phylum="Tracheophyta" rank="species" species="steelpoortensis">
<emphasis id="B97BA67A02228E35DF39FF46FC856F9F" box="[812,829,159,184]" italics="true" pageId="17" pageNumber="218">E</emphasis>
.
<emphasis id="B97BA67A02228E35DF5EFF47FC4B6F9F" box="[843,1011,158,184]" italics="true" pageId="17" pageNumber="218">steelpoortensis</emphasis>
</taxonomicName>
the spine-shields are often more or less elliptical and are sometimes short below the spines. Florally
<taxonomicName id="4C0F01EB02228E35DF2AFF1AFBB06FFB" authorityName="Bruyns" authorityYear="2020" box="[831,1032,194,221]" class="Magnoliopsida" family="Euphorbiaceae" genus="Euphorbia" kingdom="Plantae" order="Malpighiales" pageId="17" pageNumber="218" phylum="Tracheophyta" rank="species" species="steelpoortensis">
<emphasis id="B97BA67A02228E35DF2AFF1AFCE86FFB" box="[831,848,195,220]" italics="true" pageId="17" pageNumber="218">E</emphasis>
.
<emphasis id="B97BA67A02228E35DF75FF1BFBB06FFB" box="[864,1032,194,220]" italics="true" pageId="17" pageNumber="218">steelpoortensis</emphasis>
</taxonomicName>
differs from both
<taxonomicName id="4C0F01EB02228E35D8CEFF1AFAC26FFB" box="[1243,1402,195,220]" class="Magnoliopsida" family="Euphorbiaceae" genus="Euphorbia" kingdom="Plantae" order="Malpighiales" pageId="17" pageNumber="218" phylum="Tracheophyta" rank="species" species="aeruginosa">
<emphasis id="B97BA67A02228E35D8CEFF1AFAC26FFB" box="[1243,1402,195,220]" italics="true" pageId="17" pageNumber="218">E. aeruginosa</emphasis>
</taxonomicName>
and
<taxonomicName id="4C0F01EB02228E35DC9DFF3EFF4B6E27" authorityName="Bruyns" authorityYear="2020" box="[136,243,231,256]" class="Magnoliopsida" family="Euphorbiaceae" genus="Euphorbia" kingdom="Plantae" order="Malpighiales" pageId="17" pageNumber="218" phylum="Tracheophyta" rank="species" species="pisima">
<emphasis id="B97BA67A02228E35DC9DFF3EFF4B6E27" box="[136,243,231,256]" italics="true" pageId="17" pageNumber="218">E. pisima</emphasis>
</taxonomicName>
by the fact that the cyathia are slightly more raised (
<figureCitation id="133466ED02228E35DF5FFF3FFC126E27" box="[842,938,230,256]" captionStart="FIGURE 9" captionStartId="16.[136,229,1573,1595]" captionTargetBox="[164,1423,1040,1541]" captionTargetId="figure-42@16.[151,1436,1034,1549]" captionTargetPageId="16" captionText="FIGURE 9. Euphorbia steelpoortensis. A, young spines and leaf-rudiment from above (scale 2 mm, as for B–E). B, young spines and leaf-rudiment from side. C, spine-complex from above showing shape of spine-shield (dotted line). D, side view of part of cyme in female stage. E, face view of cyathium in late male stage. F, anthers and bracteole (scale 1 mm, as for G, H). G, H, female floret. Drawn by P. Bruyns from:A–G, Bruyns 13555, Burgersfort, Olifants River Valley, South Africa; H, SW of Haenertsburg, Winter 5196 (NBG)." figureDoi="http://doi.org/10.5281/zenodo.13874484" httpUri="https://zenodo.org/record/13874484/files/figure.png" pageId="17" pageNumber="218">Fig. 9 D</figureCitation>
) and the peduncle beneath the cyathium may elongate later to raise the capsule
<quantity id="4CF7D78D02228E35DDE8FED3FDE06E02" box="[509,600,266,293]" metricMagnitude="-3" metricUnit="m" metricValue="3.5" metricValueMax="5.0" metricValueMin="2.0" pageId="17" pageNumber="218" unit="mm" value="3.5" valueMax="5.0" valueMin="2.0">2–5 mm</quantity>
above the branch. From
<taxonomicName id="4C0F01EB02228E35DF7FFED2FBBE6E03" box="[874,1030,267,292]" class="Magnoliopsida" family="Euphorbiaceae" genus="Euphorbia" kingdom="Plantae" order="Malpighiales" pageId="17" pageNumber="218" phylum="Tracheophyta" rank="species" species="aeruginosa">
<emphasis id="B97BA67A02228E35DF7FFED2FBBE6E03" box="[874,1030,267,292]" italics="true" pageId="17" pageNumber="218">E. aeruginosa</emphasis>
</taxonomicName>
it differs as well by the longer pedicel of the female floret (
<figureCitation id="133466ED02228E35DD7AFEF7FE4A6E6F" box="[367,498,302,328]" captionStart="FIGURE 9" captionStartId="16.[136,229,1573,1595]" captionTargetBox="[164,1423,1040,1541]" captionTargetId="figure-42@16.[151,1436,1034,1549]" captionTargetPageId="16" captionText="FIGURE 9. Euphorbia steelpoortensis. A, young spines and leaf-rudiment from above (scale 2 mm, as for B–E). B, young spines and leaf-rudiment from side. C, spine-complex from above showing shape of spine-shield (dotted line). D, side view of part of cyme in female stage. E, face view of cyathium in late male stage. F, anthers and bracteole (scale 1 mm, as for G, H). G, H, female floret. Drawn by P. Bruyns from:A–G, Bruyns 13555, Burgersfort, Olifants River Valley, South Africa; H, SW of Haenertsburg, Winter 5196 (NBG)." figureDoi="http://doi.org/10.5281/zenodo.13874484" httpUri="https://zenodo.org/record/13874484/files/figure.png" pageId="17" pageNumber="218">Fig. 9 G, H</figureCitation>
).
</paragraph>
<paragraph id="8BB07A6802228E35DCA8FE8BFC6E6DF3" blockId="17.[136,1452,158,725]" pageId="17" pageNumber="218">
<emphasis id="B97BA67A02228E35DCA8FE8BFDF36E4B" bold="true" box="[189,587,338,364]" pageId="17" pageNumber="218">Additional specimens examined:</emphasis>
—
<collectingCountry id="F3183AF802228E35DE7DFE8BFC816E4B" box="[616,825,338,364]" name="South Africa" pageId="17" pageNumber="218">SOUTH AFRICA</collectingCountry>
.
<collectingRegion id="49CBB48A02228E35DF5CFE8BFC0C6E4B" box="[841,948,338,364]" country="South Africa" name="Limpopo" pageId="17" pageNumber="218">Limpopo</collectingRegion>
:
<quantity id="4CF7D78D02228E35DFD1FE8BFB916E4B" box="[964,1065,338,364]" metricMagnitude="4" metricUnit="m" metricValue="1.609344" pageId="17" pageNumber="218" unit="mi" value="10.0">10 miles</quantity>
east of Chuniespoort Police Stn (2429BA),
<emphasis id="B97BA67A02228E35DD1FFEAFFE126EB7" box="[266,426,374,400]" italics="true" pageId="17" pageNumber="218">Acocks 12912</emphasis>
(PRE). Jaglust (2429BA),
<quantity id="4CF7D78D02228E35DEF0FEAFFC866EB6" box="[741,830,374,401]" metricMagnitude="3" metricUnit="m" metricValue="1.02" pageId="17" pageNumber="218" unit="m" value="1020.0">1020 m</quantity>
,
<emphasis id="B97BA67A02228E35DF58FEAEFC546EB7" box="[845,1004,374,400]" italics="true" pageId="17" pageNumber="218">Bruyns 12062</emphasis>
(BOL). Near Chuniespoort (2429BA),
<quantity id="4CF7D78D02228E35DC9DFE43FF586E92" box="[136,224,410,437]" metricMagnitude="3" metricUnit="m" metricValue="1.0" pageId="17" pageNumber="218" unit="m" value="1000.0">1000 m</quantity>
,
<emphasis id="B97BA67A02228E35DCF8FE43FE306E93" box="[237,392,410,436]" italics="true" pageId="17" pageNumber="218">Marloth 5145</emphasis>
(K). North side of Olifants River, east of Malipsdrift (2429BB),
<emphasis id="B97BA67A02228E35D87FFE42FAEE6E93" box="[1130,1366,410,436]" italics="true" pageId="17" pageNumber="218">
<taxonomicName id="4C0F01EB02228E35D87FFE42FB2C6E93" box="[1130,1172,411,436]" class="Pennatae" family="Surirellaceae" genus="Van" higherTaxonomySource="GBIF" kingdom="Chromista" order="Surirellales" pageId="17" pageNumber="218" phylum="Diatomeae" rank="genus">Van</taxonomicName>
der Merwe 2167
</emphasis>
(PRE). East of Malipsdrift (2429BB),
<quantity id="4CF7D78D02228E35DDF5FE67FD916EFE" box="[480,553,446,473]" metricMagnitude="2" metricUnit="m" metricValue="7.1" pageId="17" pageNumber="218" unit="m" value="710.0">710 m</quantity>
,
<emphasis id="B97BA67A02228E35DE20FE66FD776EFF" box="[565,719,446,472]" italics="true" pageId="17" pageNumber="218">Bruyns 12114</emphasis>
(S). La Fleur, Wolkberg (2429BB),
<quantity id="4CF7D78D02228E35D871FE67FB036EFE" box="[1124,1211,446,473]" metricMagnitude="3" metricUnit="m" metricValue="1.75" pageId="17" pageNumber="218" unit="m" value="1750.0">1750 m</quantity>
,
<emphasis id="B97BA67A02228E35D8D3FE66FAE86EFF" box="[1222,1360,446,472]" italics="true" pageId="17" pageNumber="218">Winter 5196</emphasis>
(NBG).
<quantity id="4CF7D78D02228E35DC9DFE3BFF626EDB" box="[136,218,482,508]" metricMagnitude="4" metricUnit="m" metricValue="1.4484096" pageId="17" pageNumber="218" unit="mi" value="9.0">9 miles</quantity>
east of Chuniespoort (2429BC), 3000’,
<emphasis id="B97BA67A02228E35DE8CFE3BFCAC6EDB" box="[665,788,482,508]" italics="true" pageId="17" pageNumber="218">Codd 1700</emphasis>
(K). Sekukhune, Radingwana Village (2429DB),
<emphasis id="B97BA67A02228E35D954FE3BFE986D07" italics="true" pageId="17" pageNumber="218">
<taxonomicName id="4C0F01EB02228E35D954FE3BFA376EDB" authority="Moller 1075a" authorityName="" authorityYear="1905" box="[1345,1423,482,508]" class="Collembola" family="Brachystomellidae" genus="Becker" kingdom="Animalia" order="Poduromorpha" pageId="17" pageNumber="218" phylum="Arthropoda" rank="genus">Becker</taxonomicName>
&amp; Möller 1075a
</emphasis>
(UNIN). Steelpoort (2430CA), 2600’,
<emphasis id="B97BA67A02228E35DEC4FDDFFCE76D07" box="[721,863,518,544]" italics="true" pageId="17" pageNumber="218">Leach 11692</emphasis>
(NBG);
<emphasis id="B97BA67A02228E35DFD5FDDEFB116D07" box="[960,1193,518,545]" italics="true" pageId="17" pageNumber="218">Herre sub SUG 7188</emphasis>
(BOL).
<quantity id="4CF7D78D02228E35D913FDDFFAF46D07" box="[1286,1356,518,545]" metricMagnitude="4" metricUnit="m" metricValue="1.5" pageId="17" pageNumber="218" unit="km" value="15.0">15 km</quantity>
south of Penge (2430CB),
<emphasis id="B97BA67A02228E35DD45FDF3FDD76D63" box="[336,623,554,581]" italics="true" pageId="17" pageNumber="218">Hardy &amp; De Villiers 6013</emphasis>
(K). Bridge over Steelpoort River, Burgersfort (2430CB), 2100’,
<emphasis id="B97BA67A02228E35D959FDF2FEB76D4F" italics="true" pageId="17" pageNumber="218">Smuts &amp; Gillett 3523</emphasis>
(PRE). ±
<quantity id="4CF7D78D02228E35DD94FD97FE036D4F" box="[385,443,590,616]" metricMagnitude="3" metricUnit="m" metricValue="1.0" pageId="17" pageNumber="218" unit="km" value="1.0">1 km</quantity>
from Burgersfort towards Steelpoort (2430CB),
<emphasis id="B97BA67A02228E35DFF5FD96FB746D4F" box="[992,1228,590,616]" italics="true" pageId="17" pageNumber="218">
<taxonomicName id="4C0F01EB02228E35DFF5FD96FBC76D4F" authority="Wyk et al." authorityName="Wyk" box="[992,1151,590,616]" class="Pennatae" family="Surirellaceae" genus="Van" higherTaxonomySource="GBIF" kingdom="Chromista" order="Surirellales" pageId="17" pageNumber="218" phylum="Diatomeae" rank="genus">Van Wyk et al.</taxonomicName>
13194
</emphasis>
(PRU). Burgersfort (2430CB),
<emphasis id="B97BA67A02228E35DD12FDAAFE4A6DAB" box="[263,498,626,652]" italics="true" pageId="17" pageNumber="218">
<taxonomicName id="4C0F01EB02228E35DD12FDAAFE896DAB" box="[263,305,627,652]" class="Pennatae" family="Surirellaceae" genus="Van" higherTaxonomySource="GBIF" kingdom="Chromista" order="Surirellales" pageId="17" pageNumber="218" phylum="Diatomeae" rank="genus">Van</taxonomicName>
der Merwe 1006
</emphasis>
(K). Grootboom, near Steelpoort (2430CC),
<quantity id="4CF7D78D02228E35DFE5FDABFB826DAA" box="[1008,1082,626,653]" metricMagnitude="2" metricUnit="m" metricValue="9.0" pageId="17" pageNumber="218" unit="m" value="900.0">900 m</quantity>
,
<emphasis id="B97BA67A02228E35D853FDABFB706DAB" box="[1094,1224,626,652]" italics="true" pageId="17" pageNumber="218">Kluge 2451</emphasis>
(NBG). Tafelkop,
<quantity id="4CF7D78D02228E35D988FDABFF146D97" metricMagnitude="3" metricUnit="m" metricValue="5.0" pageId="17" pageNumber="218" unit="km" value="5.0">5 km</quantity>
NE of Groblersdal (2529AB),
<emphasis id="B97BA67A02228E35DE1DFD4FFD2F6D97" box="[520,663,662,688]" italics="true" pageId="17" pageNumber="218">Leach 11685</emphasis>
(NBG). Rhenosterhoek, Loskop Dam (2529AD),
<emphasis id="B97BA67A02228E35D8DCFD4FFAEF6D97" box="[1225,1367,662,688]" italics="true" pageId="17" pageNumber="218">
<taxonomicName id="4C0F01EB02228E35D8DCFD4FFAA16D97" authorityName="Eyton" authorityYear="1845" box="[1225,1305,662,688]" class="Aves" genus="Theron" higherTaxonomySource="GBIF" kingdom="Animalia" pageId="17" pageNumber="218" phylum="Chordata" rank="genus">Theron</taxonomicName>
1464
</emphasis>
(PRE). Hammond’s Mine, Roossenekal (2529BB), 4000’,
<emphasis id="B97BA67A02228E35DED6FD63FC396DF3" box="[707,897,698,724]" italics="true" pageId="17" pageNumber="218">Dahlstrand 1871</emphasis>
(PRE).
</paragraph>
</subSubSection>
</treatment>
</document>
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