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<document ID-DOI="http://dx.doi.org/10.3897/phytokeys.232.110110" ID-Pensoft-Pub="1314-2003-232-145" ID-Pensoft-UUID="B24E305A09B9582DBFDBAD8120894678" ModsDocID="1314-2003-232-145" checkinTime="1695263963467" checkinUser="pensoft" docAuthor="Goyder, David J., Davies, Nina, Finckh, Manfred, Gomes, Amandio, Goncalves, Francisco Maiato P., Meller, Paulina &amp; Paton, Alan J." docDate="2023" docId="625581C906855F0EA94DB897B76901E2" docLanguage="en" docName="PhytoKeys 232: 145-166" docOrigin="PhytoKeys 232" docPubDate="2023-09-20" docSource="http://dx.doi.org/10.3897/phytokeys.232.110110" docTitle="Asclepias minutissima Goyder 2023, sp. nov." docType="treatment" docVersion="1" id="B24E305A09B9582DBFDBAD8120894678" lastPageNumber="145" masterDocId="B24E305A09B9582DBFDBAD8120894678" masterDocTitle="New species of Asclepias (Apocynaceae), Baphia (Leguminosae), Cochlospermum (Bixaceae) and Endostemon (Lamiaceae) from the Kalahari sands of Angola and NW Zambia, with one new combination in Vangueria (Rubiaceae)" masterLastPageNumber="166" masterPageNumber="145" pageNumber="145" updateTime="1695263963467" updateUser="pensoft">
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<mods:titleInfo id="930F2E0A1D159F39D7A7BAE0AAFEFA65">
<mods:title id="D18EAB54109EBCEB6F68E55A52A33CE0">New species of Asclepias (Apocynaceae), Baphia (Leguminosae), Cochlospermum (Bixaceae) and Endostemon (Lamiaceae) from the Kalahari sands of Angola and NW Zambia, with one new combination in Vangueria (Rubiaceae)</mods:title>
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<mods:name id="157E8338504638C9E847061B0B939024" type="personal">
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</mods:role>
<mods:namePart id="D48F4E9CB4D3D61BD1FB2F6922F242FD">Goyder, David J.</mods:namePart>
<mods:nameIdentifier id="124DD01C47C74E1A0BDDD9A4B957721D" type="ORCID">https://orcid.org/0000-0002-3449-7313</mods:nameIdentifier>
<mods:affiliation id="C72CFC6EBE426F7632972764FA345A4E">Royal Botanic Gardens, Kew, TW 9 3 AE, London, UK &amp; National Geographic Okavango Wilderness Project, Wild Bird Trust, Hogsback, South Africa</mods:affiliation>
<mods:nameIdentifier id="3C738A4643BBD4CC98C33A7975FC0723" type="email">d.goyder@kew.org</mods:nameIdentifier>
</mods:name>
<mods:name id="96EE86737556A08F070C8A59B506E285" type="personal">
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</mods:role>
<mods:namePart id="2348FB5DF4F5F00667F78FAABCE6F77A">Davies, Nina</mods:namePart>
<mods:affiliation id="83D7E5DA2F7DE898BB18CF56527FF396">Royal Botanic Gardens, Kew, TW 9 3 AE, London, UK</mods:affiliation>
</mods:name>
<mods:name id="C431247ABD1B99FBB2C1914E756162E5" type="personal">
<mods:role id="375FAF5EDB806DB78F300D44CD781536">
<mods:roleTerm id="9CEAE20B5DC3977E7CD8A8E0F2F4D284">Author</mods:roleTerm>
</mods:role>
<mods:namePart id="380488ED30483A5C9D1249C05730C535">Finckh, Manfred</mods:namePart>
<mods:nameIdentifier id="60DD36D8D32C4A9A7A9C10C0B2D0CEBB" type="ORCID">https://orcid.org/0000-0003-2186-0854</mods:nameIdentifier>
<mods:affiliation id="C8C95820066A1939D2347B3A7CE05F92">Institute for Plant Science and Microbiology, University of Hamburg, Hamburg, Germany</mods:affiliation>
</mods:name>
<mods:name id="62FDD91F5E137023A4B00B34DDF6C9D8" type="personal">
<mods:role id="851A5E36184E2873FD5903A129ABEC14">
<mods:roleTerm id="5BBDFB8F5A0E2E7DB48F7A3B27F57FD3">Author</mods:roleTerm>
</mods:role>
<mods:namePart id="40CF1352EA9AF971BBCDFC945F1A4E3A">Gomes, Amandio</mods:namePart>
<mods:nameIdentifier id="DA5A80FBA15E96BC2DB64A601E650AB4" type="ORCID">https://orcid.org/0000-0002-7812-5490</mods:nameIdentifier>
<mods:affiliation id="2A0180F9FCA68B9171B8331B40C79A54">National Geographic Okavango Wilderness Project, Wild Bird Trust, Hogsback, South Africa &amp; Natural Science Faculty of Agostinho Neto University, Luanda, Angola</mods:affiliation>
</mods:name>
<mods:name id="DE7DD3E0C331F92E406079907E0A1C9D" type="personal">
<mods:role id="49AF74CA25CEA2C93A86BBDDA84420BE">
<mods:roleTerm id="5729DAA39158AE4812D3C2F862B3107A">Author</mods:roleTerm>
</mods:role>
<mods:namePart id="C03F248D44CF3B20FE5C48DFB62D0044">Goncalves, Francisco Maiato P.</mods:namePart>
<mods:nameIdentifier id="8406C199CA7334FC3E4438E266C9C251" type="ORCID">https://orcid.org/0000-0002-8859-7491</mods:nameIdentifier>
<mods:affiliation id="5ACD1C73A6031A1619AAA9C51574509F">National Geographic Okavango Wilderness Project, Wild Bird Trust, Hogsback, South Africa &amp; Herbarium of Lubango, ISCED-Huila, Lubango, Angola</mods:affiliation>
</mods:name>
<mods:name id="75FA93D1E593C7648C52559B07926038" type="personal">
<mods:role id="5E5190AAC59FBEE843CC1F9AE5E03625">
<mods:roleTerm id="2C17DBA44447C6E4420F4C57E32FA4F0">Author</mods:roleTerm>
</mods:role>
<mods:namePart id="A5956B2752DE32BBA1BF6D1582BE6F90">Meller, Paulina</mods:namePart>
<mods:nameIdentifier id="09E1C406502CA0A685A1A321A53F2D25" type="ORCID">https://orcid.org/0000-0001-6711-4385</mods:nameIdentifier>
<mods:affiliation id="6F05AEBD992579AD31EACC6B9AC92EEF">Institute for Plant Science and Microbiology, University of Hamburg, Hamburg, Germany</mods:affiliation>
</mods:name>
<mods:name id="A3E0739D48E10B74AB745EC8B74AD84B" type="personal">
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<mods:roleTerm id="1F909A9DC779C006780649D309CA6628">Author</mods:roleTerm>
</mods:role>
<mods:namePart id="3DD7A838339CCCD3BFE79052483F340B">Paton, Alan J.</mods:namePart>
<mods:nameIdentifier id="A39A6C643C5E0CA5A33E1F778B00C1FE" type="ORCID">https://orcid.org/0000-0002-6052-6675</mods:nameIdentifier>
<mods:affiliation id="8FFFB98D14E3621BE6CFE42B0830EEFA">Royal Botanic Gardens, Kew, TW 9 3 AE, London, UK</mods:affiliation>
</mods:name>
<mods:typeOfResource id="956E7DDEECAAE53C2A5EA3972063AC56">text</mods:typeOfResource>
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<mods:title id="EE3808EAA45E958B11403177EFDBBA2B">PhytoKeys</mods:title>
</mods:titleInfo>
<mods:part id="C8B51B0C0F7D5525D5D2852645A1B276">
<mods:date id="E432403879845FC12FAECC7D5896DEC3">2023</mods:date>
<mods:detail id="F795408D3808C25940F8D7BFC3D432F6" type="pubDate">
<mods:number id="8FFC3F4612F4EF00E3810E1BBDBA855D">2023-09-20</mods:number>
</mods:detail>
<mods:detail id="D78AE77B4EDF7E212F957E3C88CD8581" type="volume">
<mods:number id="8B34F0A1E2673A22E23AED2FA82C9F56">232</mods:number>
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<mods:start id="A8922D602CCC9997EE6001813A79DC22">145</mods:start>
<mods:end id="F81592A0569E7577D79A1ACC5A303E28">166</mods:end>
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<mods:location id="9AF953E061F5F85A69173FB897C958AC">
<mods:url id="D679B0F1DFBCEB2D48FD8EA90ADB0C2E">http://dx.doi.org/10.3897/phytokeys.232.110110</mods:url>
</mods:location>
<mods:classification id="CB6246CAF13270C9ABBFDDD622FE14C9">journal article</mods:classification>
<mods:identifier id="649FE9233A0CCDB9AC54A53026559B50" type="DOI">http://dx.doi.org/10.3897/phytokeys.232.110110</mods:identifier>
<mods:identifier id="BA9A6D52BFE4166A56B289320B08FFDD" type="Pensoft-Pub">1314-2003-232-145</mods:identifier>
<mods:identifier id="99C27EC9BDE9F1685EA29212F7160395" type="Pensoft-UUID">B24E305A09B9582DBFDBAD8120894678</mods:identifier>
</mods:mods>
<treatment id="625581C906855F0EA94DB897B76901E2" LSID="urn:lsid:plazi:treatment:625581C906855F0EA94DB897B76901E2" httpUri="http://treatment.plazi.org/id/625581C906855F0EA94DB897B76901E2" lastPageNumber="145" pageId="0" pageNumber="145">
<subSubSection id="F7F1D036CE45B98AF344F6B8082ADFA3" pageId="0" pageNumber="145" type="nomenclature">
<paragraph id="DF8FD24EA9BCC46B90940117AD70FD59" pageId="0" pageNumber="145">
<taxonomicName id="8C860297A7109D9E4E553D265AF648C4" LSID="625581C9-0685-5F0E-A94D-B897B76901E2" authority="Goyder" authorityName="Goyder" authorityYear="2023" class="Magnoliopsida" family="Apocynaceae" genus="Asclepias" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Asclepias minutissima" order="Gentianales" pageId="0" pageNumber="145" phylum="Tracheophyta" rank="species" species="minutissima" status="sp. nov.">Asclepias minutissima Goyder</taxonomicName>
<taxonomicNameLabel id="F9E2A0E3BF503DAD088AF3324383999C" pageId="0" pageNumber="145">sp. nov.</taxonomicNameLabel>
</paragraph>
</subSubSection>
<subSubSection id="84049C034373CAACEA35CF8C39C4D22C" pageId="0" pageNumber="145" type="diagnosis">
<paragraph id="B052AFD1474EA9F533917CB6B08425D7" pageId="0" pageNumber="145">Diagnosis.</paragraph>
<paragraph id="B0EEB6483A62E090CB37F225A4C694DE" pageId="0" pageNumber="145">
<taxonomicName id="90B3734051C79F99E50AA5B226F190B7" authorityName="Goyder" authorityYear="2023" class="Magnoliopsida" family="Apocynaceae" genus="Asclepias" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Asclepias minutissima" order="Gentianales" pageId="0" pageNumber="145" phylum="Tracheophyta" rank="species" species="minutissima">
<emphasis id="0A62F2350259F2DCB25188B374FB4102" italics="true" pageId="0" pageNumber="145">Asclepias minutissima</emphasis>
</taxonomicName>
appears most similar to
<taxonomicName id="E187C931710D2CFB3C3435A4AF9E0C83" class="Dicotyledoneae" family="Bixaceae" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="A. aurea" order="Malvales" pageId="0" pageNumber="145" phylum="Angiospermae" rank="species" species="aurea">
<emphasis id="23EE24EF951DEB347D5F0E54F7A0E91C" italics="true" pageId="0" pageNumber="145">A. aurea</emphasis>
</taxonomicName>
(Schltr.) Schltr. but differs in the campanulate rather than rotate to reflexed corolla, the ascending disposition of the corona rather than radiating from the column in
<taxonomicName id="14833033F842A0DB820EF83EB7461375" class="Dicotyledoneae" family="Bixaceae" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="A. aurea" order="Malvales" pageId="0" pageNumber="145" phylum="Angiospermae" rank="species" species="aurea">
<emphasis id="364DFF5F17A794D19DF279B4170ECB5E" italics="true" pageId="0" pageNumber="145">A. aurea</emphasis>
</taxonomicName>
, the absence of the well-developed distal tongue to the corona of the latter species, and the shorter peduncles (1-3 cm rather than (3)5-14 cm in
<taxonomicName id="ADE6CF546A7E74B3D4CF2D0D9DF15849" class="Dicotyledoneae" family="Bixaceae" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="A. aurea" order="Malvales" pageId="0" pageNumber="145" phylum="Angiospermae" rank="species" species="aurea">
<emphasis id="7015E527826FC0EE309342C2CB593581" italics="true" pageId="0" pageNumber="145">A. aurea</emphasis>
</taxonomicName>
).
</paragraph>
</subSubSection>
<subSubSection id="B5354C0228EC1B7C4F4022A00B45A83A" pageId="0" pageNumber="145" type="materials_examined">
<paragraph id="15EFED5272CB853FAEF6D36FDFADF58C" pageId="0" pageNumber="145">
<typeStatus id="5481EE1423AF4C3D5B41FABF9646BA48">Type</typeStatus>
.
</paragraph>
<paragraph id="5822BFE84C4AACE0E80650192CBEE95E" pageId="0" pageNumber="145">
<materialsCitation id="C915A8062CC96F9D33F0FDB366E89091" collectingDate="2019-12-07" collectorName="D. Goyder, F. Maiato" country="Angola" latitude="-13.763611" location="Zambezi" longLatPrecision="21" longitude="21.723612" municipality="Mussuma plains" specimenCount="1" stateProvince="Moxico Province" typeStatus="holotype">
<collectingCountry id="D63A8D6EE1A76B3138CB05B825ABCD68" name="Angola">Angola</collectingCountry>
.
<collectingRegion id="C6AA672D2CA4738D2AC4C953851C86E4" country="Angola" name="Moxico">Moxico Province</collectingRegion>
:
<collectingMunicipality id="5FAE4B9B38C90755C88451628D62D318">Mussuma plains</collectingMunicipality>
,
<locationDeviation id="42CF948AE34245CAED287164C252A612" location="Lumbala">
<quantity id="59B640558DEEA20EBF7F1F54B497BBE0" metricMagnitude="4" metricUnit="m" metricValue="5.0" unit="km" value="50.0">50 km</quantity>
NE of Lumbala
</locationDeviation>
,
<location id="947C30CE1E68EE42825CD14253CBC724" LSID="urn:lsid:plazi:treatment:625581C906855F0EA94DB897B76901E2:947C30CE1E68EE42825CD14253CBC724" country="Angola" latitude="-13.763611" longLatPrecision="21" longitude="21.723612" municipality="Mussuma plains" name="Zambezi" stateProvince="Moxico Province">Zambezi</location>
drainage,
<geoCoordinate id="DB6568223D856A5BD51829996FB51553" degrees="13" direction="south" minutes="45" orientation="latitude" precision="15" seconds="49" value="-13.763611">13°45'49&quot;S</geoCoordinate>
,
<geoCoordinate id="06E9DA2AADF10C6D8FC024D29A7E0F77" degrees="021" direction="east" minutes="43" orientation="longitude" precision="15" seconds="25" value="21.723612">021°43'25&quot;E</geoCoordinate>
, fl.
<collectingDate id="A03C0B2BF82627DFB0856A1927217824" value="2019-12-07">7 December 2019</collectingDate>
,
<emphasis id="227FB987113AD3B20391EB84C38136E6" italics="true" pageId="0" pageNumber="145">
<collectorName id="83B9C8E70BF984DB77008FB2728CE76F">D.Goyder</collectorName>
&amp;
<collectorName id="9BD5F17D5BD3DBC1286770AEE8276230">F.Maiato</collectorName>
</emphasis>
9204 (
<typeStatus id="C505DEDB1A64869900EE930B2159C76E">holotype</typeStatus>
: K (K001334259); isotypes: INBAC, LUBA, PRE)
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection id="43AE249CD4FD7B4B34B2DCBAF90E5188" pageId="0" pageNumber="145" type="description">
<paragraph id="CDA2F2C772D853AD01A1993929525226" pageId="0" pageNumber="145">Description.</paragraph>
<paragraph id="8190F25F916167508BEDA64B32C74603" pageId="0" pageNumber="145">
Perennial herb with a single erect stem arising annually from a small napiform tuber, latex white; stems 8-15 cm long, minutely pubescent along two lines. Leaves sessile, 3-7
<normalizedToken id="FF26455E9EE50B65C946F166D6287E15" originalValue="×">x</normalizedToken>
0.05 cm, filiform with inrolled margins, glabrous. Inflorescences terminal or extra-axillary, umbelliform, with 4-5 erect flowers; peduncles 1-3 cm long, minutely pubescent; pedicels c. 1 cm long, minutely pubescent. Sepals 1-1.5 mm long, narrowly to broadly triangular, glabrous. Corolla campanulate, lobes 3.5-4
<normalizedToken id="E2C519AA17DDCA82FA3653DE360DD31D" originalValue="×">x</normalizedToken>
1.5 mm, oblong, green or white, glabrous on both faces. Corona lobes 2-3 mm long, cucullate, lacking an apical tongue, pinkish cream or white. Anther wings 1 mm long. Stylar head flat. Follicles not seen. (Fig.
<figureCitation id="1E33C9E520A6F5A195ECF999F2E2A841" captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Asclepias minutissima A habit B flower C corona lobe D gynostegium E pollinarium. Drawn by Margaret Tebbs from Richards 17269." figureDoi="10.3897/phytokeys.232.110110.figure1" httpUri="https://binary.pensoft.net/fig/908497" pageId="0" pageNumber="145">1</figureCitation>
).
</paragraph>
<caption id="CD6DB3256E9132EFA8ACC7F8A3B4F0BB" doi="10.3897/phytokeys.232.110110.figure1" httpUri="https://binary.pensoft.net/fig/908497" pageId="0" pageNumber="145" start="Figure 1" startId="F1">
<paragraph id="94C8C056D391058B7E4D1757109FE339" pageId="0" pageNumber="145">
<emphasis id="D2FA321CEBAE1E2361D65FC360369F7D" bold="true" pageId="0" pageNumber="145">Figure 1.</emphasis>
<taxonomicName id="5244C25A8A8463685F9452EAE564583E" authorityName="Goyder" authorityYear="2023" class="Magnoliopsida" family="Apocynaceae" genus="Asclepias" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Asclepias minutissima" order="Gentianales" pageId="0" pageNumber="145" phylum="Tracheophyta" rank="species" species="minutissima">
<emphasis id="7587BFAB9D54F4C3B9A4BCE36B9CD814" italics="true" pageId="0" pageNumber="145">Asclepias minutissima</emphasis>
</taxonomicName>
<emphasis id="07301C8884D3E78E162CDC21B97ED9EA" bold="true" pageId="0" pageNumber="145">A</emphasis>
habit
<emphasis id="6256123DBF2FC0D62C453D7182509BCC" bold="true" pageId="0" pageNumber="145">B</emphasis>
flower
<emphasis id="EADF991842F21BD1185D61B7F01E31D4" bold="true" pageId="0" pageNumber="145">C</emphasis>
corona lobe
<emphasis id="32B8BF71F03E5E9B98C5C673E230BFE4" bold="true" pageId="0" pageNumber="145">D</emphasis>
gynostegium
<emphasis id="7AF2C30D37B7F409AD3B70ACAD275CC0" bold="true" pageId="0" pageNumber="145">E</emphasis>
pollinarium. Drawn by Margaret Tebbs from
<emphasis id="A725554BA51CE322F977796636C03E9E" italics="true" pageId="0" pageNumber="145">Richards</emphasis>
17269.
</paragraph>
</caption>
</subSubSection>
<subSubSection id="7F2C2C8042E986E04B3DB2A27577E97F" pageId="0" pageNumber="145" type="distribution">
<paragraph id="FE5035E396102050A9916A68AAD26885" pageId="0" pageNumber="145">Distribution and ecology.</paragraph>
<paragraph id="8624216EFA346D599DF9DB5D0C47CFB9" pageId="0" pageNumber="145">
Known from a single collection in eastern Angola and one in NW Zambia. The Angolan population consisted of several scattered individuals on a broad open sandy plain just above the water table. Both the Angolan and the Zambian localities are on Kalahari sand deposits, and the Angolan collection was associated with common geoxylic suffrutices of the region such as
<taxonomicName id="B4249E8E07DE486806567ECBDFB26AA8" class="Dicotyledones" family="Rosaceae" genus="Parinari" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="Parinari capensis" order="Rosales" pageId="0" pageNumber="145" phylum="Angiospermae" rank="species" species="capensis">
<emphasis id="8A9AEF8D17E7A6C7DC016CE253F4BFEA" italics="true" pageId="0" pageNumber="145">Parinari capensis</emphasis>
</taxonomicName>
Harv.,
<taxonomicName id="3724ADCDCA13CE3FA3E949C02F8C3750" class="Magnoliopsida" family="Myrtaceae" genus="Syzygium" higherTaxonomySource="IPNI" kingdom="Plantae" lsidName="Syzygium guineense subsp. huillense" order="Myrtales" pageId="0" pageNumber="145" phylum="Magnoliophyta" rank="subSpecies" species="guineense" subSpecies="huillense">Syzygium guineense (Willd.) DC. subsp. huillense</taxonomicName>
(Hiern) F.White,
<taxonomicName id="67AC7028B543E0769B424196800F03AE" class="Dicotyledoneae" family="Myrtaceae" genus="Eugenia" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="Eugenia malangensis" order="Myrtiflorae" pageId="0" pageNumber="145" phylum="Angiospermae" rank="species" species="malangensis">
<emphasis id="20C3864B785813A2A9E44BB543C38183" italics="true" pageId="0" pageNumber="145">Eugenia malangensis</emphasis>
</taxonomicName>
(O.Hoffm.) Nied.,
<taxonomicName id="E596CB7D18DAC9428C7000315E824B8C" authority="Exell &amp; Mendonca subsp. gossweileri" class="Dicotyledoneae" family="Anacardiaceae" genus="Lannea" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="Lannea gossweileri subsp. gossweileri" order="Sapindales" pageId="0" pageNumber="145" phylum="Angiospermae" rank="subSpecies" species="gossweileri" subSpecies="gossweileri">
Lannea gossweileri Exell &amp;
<normalizedToken id="8952484D3C4D248A506CC928B6308C5E" originalValue="Mendonça">Mendonca</normalizedToken>
subsp. gossweileri
</taxonomicName>
and
<taxonomicName id="FA2396297FA3A0FC46CE59545C61DDD7" class="Magnoliopsida" family="Fabaceae" genus="Cryptosepalum" higherTaxonomySource="IPNI" kingdom="Plantae" lsidName="Cryptosepalum mimosoides" order="Fabales" pageId="0" pageNumber="145" phylum="Magnoliophyta" rank="species" species="mimosoides">Cryptosepalum sp. aff. mimosoides</taxonomicName>
Welw. ex Oliv. Altitude 1100-1300 m. (Map
<figureCitation id="6985D3FA8625F7A3DCA3F46DA7A9BCEB" captionStart="Map 1" captionStartId="F2" captionText="Map 1. Known distribution of Asclepias minutissima (eastern Angola and NW Zambia)." figureDoi="10.3897/phytokeys.232.110110.map1" httpUri="https://binary.pensoft.net/fig/908498" pageId="0" pageNumber="145">1</figureCitation>
).
</paragraph>
<caption id="A65F2DECFCF32C6C43480AAADDD822C7" doi="10.3897/phytokeys.232.110110.map1" httpUri="https://binary.pensoft.net/fig/908498" pageId="0" pageNumber="145" start="Map 1" startId="F2">
<paragraph id="A9F6619E769BD37D5AA9A975C36544EB" pageId="0" pageNumber="145">
<emphasis id="EA75C88341DC6E42D786ABDECA28BBE2" bold="true" pageId="0" pageNumber="145">Map 1.</emphasis>
Known distribution of
<taxonomicName id="8AFFE945EF4DEEEB3084AE85F79C13C2" authorityName="Goyder" authorityYear="2023" class="Magnoliopsida" family="Apocynaceae" genus="Asclepias" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Asclepias minutissima" order="Gentianales" pageId="0" pageNumber="145" phylum="Tracheophyta" rank="species" species="minutissima">
<emphasis id="AD74243C2940967E5B696038FDF71A1A" italics="true" pageId="0" pageNumber="145">Asclepias minutissima</emphasis>
</taxonomicName>
(eastern Angola and NW Zambia).
</paragraph>
</caption>
</subSubSection>
<subSubSection id="D20FA13EBED3298089511833C6A1839F" pageId="0" pageNumber="145" type="conservation status">
<paragraph id="1F70928A0571342233D0B9A34A5229D0" pageId="0" pageNumber="145">Conservation status.</paragraph>
<paragraph id="BE2CD68C444B1FE6704D67C300D32E4D" pageId="0" pageNumber="145">
<taxonomicName id="EC8420049D7596831E6B0C9ED58F7659" authorityName="Goyder" authorityYear="2023" class="Magnoliopsida" family="Apocynaceae" genus="Asclepias" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Asclepias minutissima" order="Gentianales" pageId="0" pageNumber="145" phylum="Tracheophyta" rank="species" species="minutissima">
<emphasis id="4DC17CCF30E68536A25C43FEC2DE1434" italics="true" pageId="0" pageNumber="145">Asclepias minutissima</emphasis>
</taxonomicName>
is known from two localities some 350 km apart, but is inconspicuous and easily overlooked and is likely to be more common than the herbarium records suggest. Both localities are in nutrient-deficient sandy environments unsuitable for agriculture, and with little threat of habitat transformation as human settlements are few and far between. The new species is therefore provisionally assessed as Data Deficient.
</paragraph>
</subSubSection>
<subSubSection id="A423D9B6CCFE3AF1FC41347A5A2B58BF" pageId="0" pageNumber="145" type="materials_examined">
<paragraph id="1823E98E498D8D6448526DD80FFB9CF6" pageId="0" pageNumber="145">Additional specimens examined.</paragraph>
<paragraph id="52A41690A725A31478540D99C1A6DC86" pageId="0" pageNumber="145">
<materialsCitation id="EF8FEFB077E98A1D12258571D15F3A35" collectingDate="1962-11-17" country="Zambia" latitude="-11.65" location="Mwinilunga District" longLatPrecision="1295" longitude="24.05" municipality="Matonchi Farm" specimenCount="1">
<collectingCountry id="EEB60338E0742B381E29242436552064" name="Zambia">Zambia</collectingCountry>
.
<location id="11F105D57DF909BB0965A8A65EDC0CF5" LSID="urn:lsid:plazi:treatment:625581C906855F0EA94DB897B76901E2:11F105D57DF909BB0965A8A65EDC0CF5" country="Zambia" latitude="-11.65" longLatPrecision="1295" longitude="24.05" municipality="Matonchi Farm" name="Mwinilunga District">Mwinilunga District</location>
,
<quantity id="9CA60F14E8FCFE0CCE19C7AF7F1D7F6F" metricMagnitude="4" metricUnit="m" metricValue="1.6" unit="km" value="16.0">16 km</quantity>
along road from
<collectingMunicipality id="8442D9B5B2E8414A744BFDAF3E86B2DF">Matonchi Farm</collectingMunicipality>
,
<geoCoordinate id="D793BE55E90AC3A8A2CFA723FB0C8D39" degrees="11" direction="south" minutes="39" orientation="latitude" precision="925" value="-11.65">11°39'S</geoCoordinate>
,
<geoCoordinate id="F573360AC909B111528051ADB115C1B8" degrees="24" direction="east" minutes="03" orientation="longitude" precision="925" value="24.05">24°03'E</geoCoordinate>
, fl.
<collectingDate id="3761690F638F4A58D5BF0C8DD604E3C6" value="1962-11-17">17 November 1962</collectingDate>
,
<emphasis id="C628F80C57E74E84C06CF774D00C35AA" italics="true" pageId="0" pageNumber="145">Richards</emphasis>
17269 (K)
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection id="C0633D14376C890A4AD2D0CAF6249028" pageId="0" pageNumber="145" type="taxonomic notes">
<paragraph id="4FC557DC4F0A4060953CB898759F7208" pageId="0" pageNumber="145">Taxonomic notes.</paragraph>
<paragraph id="5DA67CA103ED816872F3EA8489355B3C" pageId="0" pageNumber="145">
Only three species of
<taxonomicName id="B7EB1B4BA26CC182BD962C40920D97D8" class="Magnoliopsida" family="Apocynaceae" genus="Asclepias" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Asclepias" order="Gentianales" pageId="0" pageNumber="145" phylum="Tracheophyta" rank="genus">
<emphasis id="8E3A474B0A59B4814120C6D3E39BFD96" italics="true" pageId="0" pageNumber="145">Asclepias</emphasis>
</taxonomicName>
were reported from Angola by
<bibRefCitation id="34321557444AEAC7D1CD75F2654E0FD5" author="Goyder, DJ" journalOrPublisher="Botanicheskii Zhurnal" pageId="0" pageNumber="145" refId="B22" refString="Goyder, DJ, 2008. Apocynaceae subfamilies Periplocoideae, Secamonoideae and Asclepiadoideae. In: Figueiredo E, Smith GF (2008) Plants of Angola/Plantas de Angola. Strelitzia 22, 1-279. South African National Biodiversity Institute, Pretoria." title="Apocynaceae subfamilies Periplocoideae, Secamonoideae and Asclepiadoideae. In: Figueiredo E, Smith GF (2008) Plants of Angola / Plantas de Angola. Strelitzia 22, 1 - 279. South African National Biodiversity Institute, Pretoria." year="2008">Goyder (2008)</bibRefCitation>
.
<taxonomicName id="9CA1DAA9F9018F09E6CF2F524B35ED56" class="Magnoliopsida" family="Apocynaceae" genus="Asclepias" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Asclepias baumii" order="Gentianales" pageId="0" pageNumber="145" phylum="Tracheophyta" rank="species" species="baumii">
<emphasis id="F6CA15C2CC29A7536AC867D37C0A20E6" italics="true" pageId="0" pageNumber="145">Asclepias baumii</emphasis>
</taxonomicName>
Schltr., known only from the type collection which was destroyed in Berlin, is almost certainly synonymous with
<taxonomicName id="08AF04A35DDCBE25B2DF70C31F50FE8C" class="Dicotyledoneae" family="Bixaceae" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="A. aurea" order="Malvales" pageId="0" pageNumber="145" phylum="Angiospermae" rank="species" species="aurea">
<emphasis id="9C104F9C5427130D585C982CAC1844B2" italics="true" pageId="0" pageNumber="145">A. aurea</emphasis>
</taxonomicName>
, as is
<taxonomicName id="108FFBF2BDFF54B0C905F760C006322F" class="Dicotyledoneae" family="Bixaceae" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="A. radiata" order="Malvales" pageId="0" pageNumber="145" phylum="Angiospermae" rank="species" species="radiata">
<emphasis id="EADDE6DC3CF9523D64CDB433FA90BABA" italics="true" pageId="0" pageNumber="145">A. radiata</emphasis>
</taxonomicName>
S.Moore (
<bibRefCitation id="7C6064628EF4BBBE396F15FC6FBFDA59" DOI="https://doi.org/10.1007/s12225-009-9133-3" author="Goyder, DJ" journalOrPublisher="Kew Bulletin" pageId="0" pageNumber="145" pagination="369 - 399" refId="B23" refString="Goyder, DJ, 2009. A synopsis of Asclepias (Apocynaceae: Asclepiadoideae) in tropical Africa. Kew Bulletin 64 (3): 369 - 399, DOI: https://doi.org/10.1007/s12225-009-9133-3" title="A synopsis of Asclepias (Apocynaceae: Asclepiadoideae) in tropical Africa." url="https://doi.org/10.1007/s12225-009-9133-3" volume="64" year="2009">Goyder 2009</bibRefCitation>
).
<taxonomicName id="3933C044191A735BA3DA0D46B6EF2809" authorityName="S.Moore" authorityYear="1902" class="Magnoliopsida" family="Apocynaceae" genus="Asclepias" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Asclepias randii" order="Gentianales" pageId="0" pageNumber="145" phylum="Tracheophyta" rank="species" species="randii">
<emphasis id="8E15EBD2FBDA47F03D039B6915A5ACF3" italics="true" pageId="0" pageNumber="145">Asclepias randii</emphasis>
</taxonomicName>
S.Moore is also present. Following the transfer of
<taxonomicName id="CEA2E5117533B8410CF412F23267EE68" authorityName="Rendle" authorityYear="1894" class="Magnoliopsida" family="Apocynaceae" genus="Odontostelma" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="Odontostelma" order="Gentianales" pageId="0" pageNumber="145" phylum="Tracheophyta" rank="genus">
<emphasis id="B87A804AAF64A3A65DCCC0EDA6E297BB" italics="true" pageId="0" pageNumber="145">Odontostelma</emphasis>
</taxonomicName>
Rendle to
<taxonomicName id="8964E764FB34A220212BEB2F658F66CC" class="Magnoliopsida" family="Apocynaceae" genus="Asclepias" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Asclepias" order="Gentianales" pageId="0" pageNumber="145" phylum="Tracheophyta" rank="genus">
<emphasis id="0BD9AD192236608DA9FD51A62AEACC66" italics="true" pageId="0" pageNumber="145">Asclepias</emphasis>
</taxonomicName>
by
<bibRefCitation id="C6A64A38342CEEF4EE3C75ADD8065731" DOI="https://doi.org/10.1007/s12225-009-9133-3" author="Goyder, DJ" journalOrPublisher="Kew Bulletin" pageId="0" pageNumber="145" pagination="369 - 399" refId="B23" refString="Goyder, DJ, 2009. A synopsis of Asclepias (Apocynaceae: Asclepiadoideae) in tropical Africa. Kew Bulletin 64 (3): 369 - 399, DOI: https://doi.org/10.1007/s12225-009-9133-3" title="A synopsis of Asclepias (Apocynaceae: Asclepiadoideae) in tropical Africa." url="https://doi.org/10.1007/s12225-009-9133-3" volume="64" year="2009">Goyder (2009)</bibRefCitation>
,
<taxonomicName id="6EF29B7AF69D354BAC6FA9076058A1FE" class="Dicotyledoneae" family="Bixaceae" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="A. minor" order="Malvales" pageId="0" pageNumber="145" phylum="Angiospermae" rank="species" species="minor">
<emphasis id="CA25D36BD739A17578394A98485ED809" italics="true" pageId="0" pageNumber="145">A. minor</emphasis>
</taxonomicName>
(S.Moore) Goyder, also occurs in the country. All of these species occur in scattered populations with few individuals, as is common for
<taxonomicName id="CAC376712CC880C77A145A44D979ADF1" class="Magnoliopsida" family="Apocynaceae" genus="Asclepias" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Asclepias" order="Gentianales" pageId="0" pageNumber="145" phylum="Tracheophyta" rank="genus">
<emphasis id="3E65D747238EEA847B1894B5B970D88A" italics="true" pageId="0" pageNumber="145">Asclepias</emphasis>
</taxonomicName>
and allied genera in tropical Africa. As a result, they tend to be collected very infrequently and few herbarium records exist for any of them in Angola.
</paragraph>
<paragraph id="3D6E453E7BE360D427DB38534468BF0F" pageId="0" pageNumber="145">
<taxonomicName id="BE038DFDB0CBC4F79C6C4E0D427C163A" authorityName="S.Moore" authorityYear="1902" class="Magnoliopsida" family="Apocynaceae" genus="Asclepias" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Asclepias randii" order="Gentianales" pageId="0" pageNumber="145" phylum="Tracheophyta" rank="species" species="randii">
<emphasis id="677B4DF846B7626553125CC6C7263A71" italics="true" pageId="0" pageNumber="145">Asclepias randii</emphasis>
</taxonomicName>
is a much more robust plant than the other species and has pubescent stems and leaves.
<taxonomicName id="C27558E146C73B129D4DBA469CF1D899" class="Dicotyledoneae" family="Bixaceae" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="A. aurea" order="Malvales" pageId="0" pageNumber="145" phylum="Angiospermae" rank="species" species="aurea">
<emphasis id="486326B4C203A3FB067B3521B5E7FA88" italics="true" pageId="0" pageNumber="145">A. aurea</emphasis>
</taxonomicName>
and
<taxonomicName id="907A9D3721FF62397AB40BF0C028312A" class="Dicotyledoneae" family="Bixaceae" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="A. minor" order="Malvales" pageId="0" pageNumber="145" phylum="Angiospermae" rank="species" species="minor">
<emphasis id="7F025A9915630334FAF483C735F425D1" italics="true" pageId="0" pageNumber="145">A. minor</emphasis>
</taxonomicName>
are glabrous and are slender herbs.
<taxonomicName id="D21FA7A9B7F33D854078108A03EB6797" authorityName="Goyder" authorityYear="2009" baseAuthorityName="S.Moore" class="Magnoliopsida" family="Apocynaceae" genus="Asclepias" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Asclepias minor" order="Gentianales" pageId="0" pageNumber="145" phylum="Tracheophyta" rank="species" species="minor">
<emphasis id="07EAC5B2F147A2DDEBCEA98A98E13A77" italics="true" pageId="0" pageNumber="145">Asclepias minor</emphasis>
</taxonomicName>
has a corona which is much reduced, not even reaching the base of the anther wings and has a short ventral appendage. So the species most similar to our new collection appears to be the highly variable
<taxonomicName id="23234BBD287B031BBEEC7874D03B1D49" class="Dicotyledoneae" family="Bixaceae" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="A. aurea" order="Malvales" pageId="0" pageNumber="145" phylum="Angiospermae" rank="species" species="aurea">
<emphasis id="AF27A8F85D7ADB6E5D75622A4C11E9C2" italics="true" pageId="0" pageNumber="145">A. aurea</emphasis>
</taxonomicName>
, which occurs across Namibia, southern Angola, Zambia, the Katanga region of the D.R.Congo, Zimbabwe, northern provinces of South Africa, Eswatini (Swaziland) and Lesotho (
<bibRefCitation id="AE08555654F772E30DE1DD7B182DBB05" DOI="https://doi.org/10.1007/s12225-009-9133-3" author="Goyder, DJ" journalOrPublisher="Kew Bulletin" pageId="0" pageNumber="145" pagination="369 - 399" refId="B23" refString="Goyder, DJ, 2009. A synopsis of Asclepias (Apocynaceae: Asclepiadoideae) in tropical Africa. Kew Bulletin 64 (3): 369 - 399, DOI: https://doi.org/10.1007/s12225-009-9133-3" title="A synopsis of Asclepias (Apocynaceae: Asclepiadoideae) in tropical Africa." url="https://doi.org/10.1007/s12225-009-9133-3" volume="64" year="2009">Goyder 2009</bibRefCitation>
).
</paragraph>
<paragraph id="DE052D0EBADFBC3DDE8D325392039C9A" pageId="0" pageNumber="145">
<taxonomicName id="8B5C77C45969ADD46022C5D9996AEA94" class="Magnoliopsida" family="Apocynaceae" genus="Asclepias" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Asclepias aurea" order="Gentianales" pageId="0" pageNumber="145" phylum="Tracheophyta" rank="species" species="aurea">
<emphasis id="D42BBB78FB2F2875A2443211B65FF1A0" italics="true" pageId="0" pageNumber="145">Asclepias aurea</emphasis>
</taxonomicName>
has rotate to reflexed corolla lobes, corona lobes which radiate from the column and are extended into a long distal tongue, and longer peduncles. In addition to the rather subtle morphological characters that distinguish the new species from
<taxonomicName id="6A5D53318B1DBA262E101DFDC3F7024B" class="Dicotyledoneae" family="Bixaceae" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="A. aurea" order="Malvales" pageId="0" pageNumber="145" phylum="Angiospermae" rank="species" species="aurea">
<emphasis id="EDFCD2417454AF862A3C2308DB2A8746" italics="true" pageId="0" pageNumber="145">A. aurea</emphasis>
</taxonomicName>
, its ecological requirements, close to the water table on leached Kalahari sand, are probably also significant.
<taxonomicName id="0AD4A646376A7B684952645DC6C4E8E5" class="Magnoliopsida" family="Apocynaceae" genus="Asclepias" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Asclepias aurea" order="Gentianales" pageId="0" pageNumber="145" phylum="Tracheophyta" rank="species" species="aurea">
<emphasis id="C5CA3DDA2E3B3F3C41AE79DAEF9464CA" italics="true" pageId="0" pageNumber="145">Asclepias aurea</emphasis>
</taxonomicName>
occurs on richer soils. The new taxon was mentioned by
<bibRefCitation id="AE973494EA9410DB80DACC756AD35550" author="Goyder, DJ" journalOrPublisher="Science and conservation: a modern synthesis. Springer" pageId="0" pageNumber="145" refId="B28" refString="Goyder, DJ, Gilbert, MG, Venter, HJT, 2020. Apocynaceae (part 2). In: Garcia MA (Ed.) Flora Zambesiaca vol. 7(3), 1-375. Royal Botanic Gardens, Kew." title="Apocynaceae (part 2). In: Garcia MA (Ed.) Flora Zambesiaca vol. 7 (3), 1 - 375. Royal Botanic Gardens, Kew." year="2020">Goyder et al. (2020</bibRefCitation>
: 276) in a note under the related
<taxonomicName id="C8963E4CFB11BFD792EC3436F0ACA30F" class="Dicotyledoneae" family="Bixaceae" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="A. aurea" order="Malvales" pageId="0" pageNumber="145" phylum="Angiospermae" rank="species" species="aurea">
<emphasis id="183746CFC700A4C0A37F691E18689925" italics="true" pageId="0" pageNumber="145">A. aurea</emphasis>
</taxonomicName>
but the Angolan (type) collection was cited incorrectly as
<emphasis id="C84733B7C8D89B251DB67B3C2B8E2F82" italics="true" pageId="0" pageNumber="145">
Goyder &amp;
<normalizedToken id="345736B692B69DBBE71F59C1C5D5C6BC" originalValue="Gonçalves">Goncalves</normalizedToken>
</emphasis>
4809.
</paragraph>
</subSubSection>
</treatment>
</document>
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