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<document id="5FA6430C10F75698CD9A963E2412F366" ID-DOI="10.5091/plecevo.120171" ID-publisher-id="120171" URI-arpha="FC31B061-642C-5B93-BF39-CA0113B2B9FE" article-type="research-article" checkinTime="1722878488464" checkinUser="pensoft" docAuthor="Stirton, Charles H., Bello, Abubakar &amp; Muasya, A. Muthama" docDate="2024" docId="B28CF062511B5ACD8B08156821E8B53A" docLanguage="en" docName="Plant Ecology and Evolution 157(3): 291-312" docOrigin="Plant Ecology and Evolution 157 (3)" docSource="https://plecevo.eu/article/120171/download/xml/" docStyle="DocumentStyle:PensoftTaxPub.0000.journal_article.generic" docStyleName="PensoftTaxPub.0000.journal_article.generic" docTitle="Psoralea pallescens C. H. Stirt. &amp; Muasya 2024, sp. nov." docType="treatment" docVersion="1" dtd-version="3.0" lastPageNumber="312" masterDocId="FC31B061642C5B93BF39CA0113B2B9FE" masterDocTitle="Ten new species and notes on the genus Psoralea L. (Psoraleeae, Fabaceae) from South Africa" masterLastPageNumber="312" masterPageNumber="291" pageNumber="291" updateTime="1722878608093" updateUser="pensoft">
<mods:mods id="2E4B860EB62EC15BEDA1FB1728C72261" xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo id="91EE781D482EB2BEAF3DB07D2B468C37">
<mods:title id="C68074CC63DB617C37FF40B260797B20">Ten new species and notes on the genus Psoralea L. (Psoraleeae, Fabaceae) from South Africa</mods:title>
</mods:titleInfo>
<mods:name id="94EC45A3885FF96AA7C9EED1C50BAB52" type="personal">
<mods:role id="2E721687A482E887EFB77B6132E65B41">
<mods:roleTerm id="097227FDEAAA8C86C75018825F956B71">Author</mods:roleTerm>
</mods:role>
<mods:namePart id="465A52B46B965B45A1DE2DD7E3D295E5">Stirton, Charles H.</mods:namePart>
<mods:nameIdentifier id="6BDFB2F51A36B5F41237C36472B7EE94" type="ORCID">0000-0001-7207-2765</mods:nameIdentifier>
<mods:affiliation id="59C63DF3055313D7DF5449F1F567EF73">Bolus Herbarium, Biological Sciences Department, University of Cape Town, Cape Town, South Africa</mods:affiliation>
</mods:name>
<mods:name id="29DB9618C5CB16F32870FEBF561B4BF4" type="personal">
<mods:role id="56D82EC15AA86A055BA6579263E5A912">
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</mods:role>
<mods:namePart id="9B4FAEAB4A884F25B9EB4B3468F124FD">Bello, Abubakar</mods:namePart>
<mods:nameIdentifier id="D9FFAAD6132C06671F50A5ED53F6FD60" type="ORCID">0000-0002-3105-914X</mods:nameIdentifier>
<mods:affiliation id="504E4CE339A2EA9090A76129F78E80A4">Department of Biology, Umaru Musa Yaradua University, Katsina State, Nigeria &amp; Department of Molecular Evolution and Plant Systematics &amp; Herbarium (LZ), Institute of Biology, Leipzig University, Leipzig, Germany &amp; German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany</mods:affiliation>
</mods:name>
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<mods:role id="8DF0975E397583AE6DB4929A61B441A8">
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</mods:role>
<mods:namePart id="BF96BF5367D24699E32C792BD89272A8">Muasya, A. Muthama</mods:namePart>
<mods:nameIdentifier id="4C85410D1CB24356EC54526131B740E7" type="ORCID">0000-0002-0763-0780</mods:nameIdentifier>
<mods:affiliation id="01FFAE3C67BAB04DE659B664B86CCCDE">Bolus Herbarium, Biological Sciences Department, University of Cape Town, Cape Town, South Africa</mods:affiliation>
</mods:name>
<mods:typeOfResource id="2CFB5B52FEB7064EDA3D96C88A2339DD">text</mods:typeOfResource>
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<mods:title id="B3D6191DD128C6B35AAED06C1C63C680">Plant Ecology and Evolution</mods:title>
</mods:titleInfo>
<mods:part id="481EC995C21DB55004AAD0CCBB78CAE7">
<mods:date id="FF1B08781207BDB9ED0251E192676FB5">2024</mods:date>
<mods:detail id="5AC53EFDB69D6392EA8EF5FF79350785" type="pubDate">
<mods:number id="B35FB2AF06A2ADA35B5EABF10E7552C2">2024-08-05</mods:number>
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<mods:number id="235693137FCC7623C796F5C273F0315D">157</mods:number>
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<mods:number id="FCAE2C9E7601E82B229EA05D85105B05">3</mods:number>
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<mods:start id="B682BE1AD0083329C598C3FE1C455C69">291</mods:start>
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<mods:classification id="C18F8EBD4AF161DFA4E19913B935A3AF">journal article</mods:classification>
<mods:identifier id="E39E5F319AE7F770A548327D95A797E9" type="DOI">10.5091/plecevo.120171</mods:identifier>
</mods:mods>
<treatment id="B28CF062511B5ACD8B08156821E8B53A" ID-arpha="B28CF062-511B-5ACD-8B08-156821E8B53A" ID-ipni="urn:lsid:ipni.org:names:77345666-1" LSID="urn:lsid:plazi:treatment:B28CF062511B5ACD8B08156821E8B53A" LSID-IPNI="urn:lsid:ipni.org:names:77345666-1" httpUri="http://treatment.plazi.org/id/B28CF062511B5ACD8B08156821E8B53A">
<subSubSection id="E9A673A74F6D36D875B310F69CB2FB77" type="nomenclature">
<paragraph id="DB3A59BDAE584B3EEA91C5EAB01499A3">
<heading id="9F3714BC192932ACB745CFAB52C0651F" reason="label">4.</heading>
<taxonomicName id="DD405D219CE04547C82124CAC8B4FA94" authority="C. H. Stirt. &amp; Muasya" authorityName="C. H. Stirt. &amp; Muasya" authorityYear="2024" class="Magnoliopsida" family="Fabaceae" genus="Psoralea" kingdom="Animalia" order="Fabales" phylum="Tracheophyta" rank="species" species="pallescens" status="sp. nov.">
<emphasis id="D0A37746F98ECDF5ED9E76CE874A887A" italics="true">Psoralea pallescens</emphasis>
C. H. Stirt. &amp; Muasya
</taxonomicName>
<taxonomicNameLabel id="3EBC8AC4323EE72ABB3B94296F7DDBC8" rank="species">sp. nov.</taxonomicNameLabel>
</paragraph>
</subSubSection>
<subSubSection id="54E4785B44ACABDD969EC596DF4BE1BA" type="description">
<paragraph id="959E077E4CF7060A97F8C95508C64AB5">
<figureCitation id="791824FDA6F2CE9E34182776116F662C" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Known distribution of the ten described Psoralea species. Map by Abubakar Bello." figureDoi="10.5091/plecevo.120171.figure2" httpUri="https://binary.pensoft.net/fig/1105540">Figs 2</figureCitation>
,
<figureCitation id="EC337C90BAA07294E44AA18F16FFC9DA" captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Psoralea pallescens. A. Habitat. B. Habit of young plant. C. Cluster of fruiting calyces. D. Close-up of opened dried calyx teeth of calyces releasing seeds. E. Stages of fruiting calyx maturation. Calyx strongly accrescent, oily, fleshy, and swollen with the teeth tightly closed during seed maturation. F. Terminal cluster of solitary axillary flowers. G. Habit of mature plant. H. Flowering in upper axils of terminal seasonal shoot. Photographs: A, C E by Charles Stirton; B, F H by Klaus Wehrlin." figureDoi="10.5091/plecevo.120171.figure6" httpUri="https://binary.pensoft.net/fig/1105544">6</figureCitation>
</paragraph>
</subSubSection>
<subSubSection id="SECID0ETDAG" type="material">
<paragraph id="EF57888DF10D891EE39DA82CCBB6A314">
<heading id="77A4667298E9977A5743CFD408FB7F70" reason="title">
<typeStatus id="F6A7040BA485A7EF6CC513731ED156C8">Type</typeStatus>
.
</heading>
</paragraph>
<paragraph id="29E34B0EF07694BBEE1E9B21FC3FE353">
<materialsCitation id="3C471086A89B18A377EBFD5E376DBAF3" collectingDate="1980-11-19" collectorName="C. H. Stirton" country="South Africa" county="Caledon" latitude="-34.13552" location="Riviersonderend" longLatPrecision="1" longitude="19.899185" municipality="Southern" specimenCount="2" stateProvince="Western Cape" typeStatus="holotype">
<collectingCountry id="F75B94E98BD0C7BB9BFCDDC27B941419" name="South Africa">SOUTH AFRICA</collectingCountry>
<emphasis id="ED08082351CC16F71CCBC77D536B82A8" bold="true">
<collectingRegion id="180175114E9DE37B6666FEC3BBCD25C8" country="South Africa" name="Western Cape">Western Cape Province</collectingRegion>
: 3419 (
<collectingCounty id="F7FC72170A4232C05F731DBDCE14A8D1">Caledon</collectingCounty>
)
</emphasis>
<collectingMunicipality id="57F34EA71D5A366F10234CD21835298E">Southern</collectingMunicipality>
slopes of mountains north of
<location id="BF56E92EEAEE52BD1DCE393C0BB7FCEB" LSID="urn:lsid:plazi:treatment:B28CF062511B5ACD8B08156821E8B53A:BF56E92EEAEE52BD1DCE393C0BB7FCEB" country="South Africa" county="Caledon" latitude="-34.13552" longLatPrecision="1" longitude="19.899185" municipality="Southern" name="Riviersonderend" stateProvince="Western Cape">Riviersonderend</location>
, 3419 ( DC);
<named-content content-type="dwc:verbatimCoordinates" id="NCID0E5DAG" specific-use="{&quot;type&quot;:&quot;Point&quot;,&quot;coordinates&quot;:[19.899186,-34.135519]}">
<geoCoordinate id="96E107A7811D02110374F99C24271BD4" degrees="34" direction="south" minutes="08" orientation="latitude" precision="1" seconds="7.87" value="-34.13552">34 ° 08 7.87 ” S</geoCoordinate>
,
<geoCoordinate id="CC224D5EA0391DD0EFF5095403E64304" degrees="19" direction="east" minutes="53" orientation="longitude" precision="1" seconds="57.07" value="19.899185">19 ° 53 57.07 ” E</geoCoordinate>
</named-content>
;
<date id="504475986E5571B804E446D5D442A91C" value="1980-11-19">
<collectingDate id="F373FB5BB46B10CAA868869BEBBFA3F9" value="1980-11-19">19 Nov. 1980</collectingDate>
</date>
;
<emphasis id="70CFEB741E46E86D98A8DD9D1FA8FCBE" italics="true">
<collectorName id="CCF75FA53D41AF27DE0C62FCB7325BD0">C. H. Stirton</collectorName>
8219
</emphasis>
;
<typeStatus id="AE3A11FEC3606349BAF513E7B3CA0E07" type="holotype">holotype</typeStatus>
: NBG;
<typeStatus id="55DAADCAA2EED5BF60C241D4458FC419" type="isotype">isotype</typeStatus>
: K
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection id="SECID0EFEAG" type="diagnosis">
<paragraph id="2E7FDBCE604EADA9E93A689D7715DD33">
<heading id="A56D3AA5B6C80F541E893567A62B4854" reason="title">Diagnosis.</heading>
</paragraph>
<paragraph id="01970E5640E0CA4AC7C4E861C1EEC0A5">
Species similar to
<taxonomicName id="CA41F9BA7634E6BDEF28C6A7A5A5BDB3" authority="C. H. Stirt." authorityName="C. H. Stirt." class="Magnoliopsida" family="Fabaceae" genus="Psoralea" kingdom="Plantae" order="Fabales" phylum="Tracheophyta" rank="species" species="usitata">
<emphasis id="762480276A4BFF49CE093678598DF5BC" italics="true">Psoralea usitata</emphasis>
C. H. Stirt.
</taxonomicName>
but differs in its reseeding habit (
<taxonomicName id="22BC04932538732D64F89966F3916C82" class="Magnoliopsida" family="Fabaceae" genus="Psoralea" kingdom="Plantae" order="Fabales" phylum="Tracheophyta" rank="species" species="usitata">
<emphasis id="659780DD8E25E20955FF8CD8D210745D" italics="true">P. usitata</emphasis>
</taxonomicName>
resprouting); 1 - foliolate leaves (
<taxonomicName id="8A34EF047C0ABD390422A5D2824943D6" class="Magnoliopsida" family="Fabaceae" genus="Psoralea" kingdom="Plantae" order="Fabales" phylum="Tracheophyta" rank="species" species="usitata">
<emphasis id="79E7299EF4AE5CD9BC01AC8F791576EF" italics="true">P. usitata</emphasis>
</taxonomicName>
leaves reduced to appressed scales), branches and branchlets stiffly erect (
<taxonomicName id="CE76BBE225D51473D85A79E4369875E2" class="Magnoliopsida" family="Fabaceae" genus="Psoralea" kingdom="Plantae" order="Fabales" phylum="Tracheophyta" rank="species" species="usitata">
<emphasis id="AECAAF7A397DAD5A73DC23E7DF37439B" italics="true">P. usitata</emphasis>
</taxonomicName>
arching to drooping), stipules bifid (
<taxonomicName id="EC3BAD558BC5BA9F85A1AEBE99F70A39" class="Magnoliopsida" family="Fabaceae" genus="Psoralea" kingdom="Plantae" order="Fabales" phylum="Tracheophyta" rank="species" species="usitata">
<emphasis id="169D5169EE936995A73DF388CBF3DF4E" italics="true">P. usitata</emphasis>
</taxonomicName>
stipules 1 - fid); flowers pale mauve,
<quantity id="4835A793F3CAD6FDCDAB5C85633E0F64" metricMagnitude="-2" metricUnit="m" metricValue="1.75" metricValueMax="1.8" metricValueMin="1.7" unit="mm" value="17.5" valueMax="18.0" valueMin="17.0">1718 mm</quantity>
long, faintly sweetly smelling (
<taxonomicName id="C7FE214A70F58DD9E45A3768555285AA" class="Magnoliopsida" family="Fabaceae" genus="Psoralea" kingdom="Plantae" order="Fabales" phylum="Tracheophyta" rank="species" species="usitata">
<emphasis id="C901612A2697F559DAB15AB30EFE21F7" italics="true">P. usitata</emphasis>
</taxonomicName>
purple and white,
<quantity id="BBFFCF7E0CA52FE0D3E939A6B826C2D4" metricMagnitude="-2" metricUnit="m" metricValue="1.15" metricValueMax="1.4" metricValueMin="0.9" unit="mm" value="11.5" valueMax="14.0" valueMin="9.0">914 mm</quantity>
long, unscented); pedicels
<quantity id="DF35FDF6BB9E21C16BD7330E6E2537D8" metricMagnitude="-3" metricUnit="m" metricValue="8.5" metricValueMax="9.0" metricValueMin="8.0" unit="mm" value="8.5" valueMax="9.0" valueMin="8.0">89 mm</quantity>
long; cupulum trilobed, teeth equal (
<taxonomicName id="9270B181EED54CB73D7AAAC55D7295A2" class="Magnoliopsida" family="Fabaceae" genus="Psoralea" kingdom="Plantae" order="Fabales" phylum="Tracheophyta" rank="species" species="usitata">
<emphasis id="2CC5D9A38549FC9D81B31B2A70467E4A" italics="true">P. usitata</emphasis>
</taxonomicName>
<quantity id="4E3DE8514BA3CD47F402DE25B12647C6" metricMagnitude="-3" metricUnit="m" metricValue="2.5" metricValueMax="3.0" metricValueMin="2.0" unit="mm" value="2.5" valueMax="3.0" valueMin="2.0">23 mm</quantity>
long, cupulum bilobed with one of the pair bifurcate); calyx teeth about equal to calyx tube, margins not ciliate (
<taxonomicName id="88DAAC89C0A3AFF788A2F99F18AA2ACD" class="Magnoliopsida" family="Fabaceae" genus="Psoralea" kingdom="Plantae" order="Fabales" phylum="Tracheophyta" rank="species" species="usitata">
<emphasis id="82E88E22D7883A14A1E7AEB4D98D4E13" italics="true">P. usitata</emphasis>
</taxonomicName>
calyx teeth shorter than calyx tube, margins ciliate); calyx strongly accrescent, swollen and fleshy, berry-like, teeth tightly closed during seed maturation, shiny and oily, becoming papery and accrescent in fruit (
<taxonomicName id="78E7E2EFF8EB29296077A7CA6E215F75" class="Magnoliopsida" family="Fabaceae" genus="Psoralea" kingdom="Plantae" order="Fabales" phylum="Tracheophyta" rank="species" species="usitata">
<emphasis id="BE4E1F1CAF38DF6FA24F1D72E67012B4" italics="true">P. usitata</emphasis>
</taxonomicName>
slightly accrescent, never berrylike, with teeth erect).
</paragraph>
</subSubSection>
<subSubSection id="SECID0EOHAG" type="description">
<paragraph id="8BAFF193BB3AF295D3CE4800D22BF172">
<heading id="96466793AE888B2ACF9807C6FFF689F6" reason="title">Description.</heading>
</paragraph>
<paragraph id="16F0A15A7B429ED7F499AF2D01A53CE3">
Virgate
<underline id="815C2F0222DD8EC53230148F68DAC070">shrub</underline>
up to
<quantity id="AFB011A8AEEC617AED1CDF5EA7205C8E" metricMagnitude="0" metricUnit="m" metricValue="2.2" unit="m" value="2.2">2.2 m</quantity>
tall, colonial reseeder.
<underline id="144906FF2BC98F49E31FEADF8885EAE4">Stems</underline>
13, glabrous.
<underline id="36D8988CB1188472F15CCF57B09302E9">Branches</underline>
erect and stiff even when in flower.
<underline id="4F8B5D41302C8C07B961616BC3B0D28C">Seasonal shoots</underline>
green, rounded with 1012 fine grooves in cross-section, glandular, clustered on last season branch tips; previous seasons wood green with brown flaky bark.
<underline id="FF2DD6BA813DF273DB4AECE343EAF4B4">Leaves</underline>
1 - foliolate, spirally arranged, appressed to shoot, up to 18 × ±
<quantity id="FF194E174C7E99128FA1A1D1D9C419EF" metricMagnitude="-3" metricUnit="m" metricValue="1.0" unit="mm" value="1.0">1 mm</quantity>
, becoming shorter towards apex of shoots, very narrowly obovate, brownish yellow, glabrous, persistent, laterally compressed and hemispherical in cross-section, with
<quantity id="5B57896CA45D89EA82A14E622996BA17" metricMagnitude="-3" metricUnit="m" metricValue="1.0" unit="mm" value="1.0">1 mm</quantity>
long mucro, glandular (translucent against the sun); rachis 1.0
<quantity id="34440E8DE5BC22BFA098B2CBD1D50A26" metricMagnitude="-3" metricUnit="m" metricValue="1.5" unit="mm" value="1.5">1.5 mm</quantity>
long, yellowish; petiole &lt;
<quantity id="9311406228063C5FA1A81A24FD2BAB33" metricMagnitude="-3" metricUnit="m" metricValue="2.0" unit="mm" value="2.0">2 mm</quantity>
long.
<underline id="7B692D33CC5EBF26FDF160D6DB19EBCF">Stipules</underline>
ascending, bifid, 1 - nerved, green with yellowish tips, glandular, triangular,
<quantity id="7AB5874AFFE80D33575A3987A5DFDDDF" metricMagnitude="-3" metricUnit="m" metricValue="2.0" unit="mm" value="2.0">2 mm</quantity>
long.
<underline id="68FA0BB8C642825F64436B259974C2EA">Inflorescences</underline>
borne in most upper axils of seasonal shoots with one flower per axil; buds glabrous; peduncles absent, bracts minute; pedicels
<quantity id="3958EA468835FCA3AB358032E38FE377" metricMagnitude="-3" metricUnit="m" metricValue="8.5" metricValueMax="9.0" metricValueMin="8.0" unit="mm" value="8.5" valueMax="9.0" valueMin="8.0">89 mm</quantity>
long; cupulum trilobed, teeth equal,
<quantity id="C68811170F61CDD1ECBC6E1A6AD000D4" metricMagnitude="-3" metricUnit="m" metricValue="4.0" unit="mm" value="4.0">4 mm</quantity>
long, situated on pedicel one third up from the base, glabrous, lobes triangular, acute, gland-dotted.
<underline id="3A273577D2EEAF5057DBABB93C391523">Flowers</underline>
<quantity id="41059CEAE2D4BDF5D0CF103DACE92359" metricMagnitude="-2" metricUnit="m" metricValue="1.75" metricValueMax="1.8" metricValueMin="1.7" unit="mm" value="17.5" valueMax="18.0" valueMin="17.0">1718 mm</quantity>
long; axillary, one per axil, held at 30 ° from stem, pale mauve, veins not discoloured; maturing sequentially up the shoot; faintly sweet-scented.
<underline id="0E04466C2B5478548E12D622919D62DC">Calyx</underline>
glabrous, lobes subequal, with keel tooth
<quantity id="592C31853988DB0EE81DAA3E50F6E038" metricMagnitude="-3" metricUnit="m" metricValue="1.0" unit="mm" value="1.0">1 mm</quantity>
longer than others; about equal to calyx tube; carinal tooth
<quantity id="46F417AE6B1E9495BAFA96C686F321BF" metricMagnitude="-3" metricUnit="m" metricValue="8.0" unit="mm" value="8.0">8 mm</quantity>
long, acute; vexillar calyx lobes fused
<quantity id="94578FDCF1B27A23A4C1AB1D307D5E74" metricMagnitude="-3" metricUnit="m" metricValue="2.5" unit="mm" value="2.5">2.5 mm</quantity>
from apex; tube
<quantity id="8294D7C18D6AFFE1FA464337C8C76BB3" metricMagnitude="-3" metricUnit="m" metricValue="4.0" unit="mm" value="4.0">4 mm</quantity>
long; calyx shorter than corolla; inner face of calyx teeth densely covered in black stubby hairs, margins not ciliate; vexillar tooth purplish, rest green; strongly ribbed; prominently glandular, glands constant in size, same density all over, drying orange; fleshy and berry-like during seed maturation with teeth tightly closed, shiny and oily, becoming papery, orangey brown and accrescent in fruit.
<underline id="F9D18C95994690975D3AC440BEBE83B7">Standard petal</underline>
s 1517 ×
<quantity id="13DECEA893AF4AD6744B64EA69439240" metricMagnitude="-2" metricUnit="m" metricValue="1.6" unit="mm" value="16.0">16 mm</quantity>
; broadly ovate, pale mauve but darker towards the apex, nectar patch a dark narrow purple central strip, often absent, veins not coloured; 2 free vertical curved 2 ×
<quantity id="5DEA5097B8F3CF897D8886DB8F38B208" metricMagnitude="-3" metricUnit="m" metricValue="3.0" unit="mm" value="3.0">3 mm</quantity>
, narrow, white appendages present
<quantity id="643A06F6DB866BD81CA51D2A04157E9A" metricMagnitude="-3" metricUnit="m" metricValue="2.0" unit="mm" value="2.0">2 mm</quantity>
above claw; auricles well-developed, almost tubular when pressed together with anthesis; apex emarginate; claw
<quantity id="11ADE3BAA4CE9F1BA465926218075FEB" metricMagnitude="-3" metricUnit="m" metricValue="5.0" unit="mm" value="5.0">5 mm</quantity>
long.
<underline id="C614DD340EE4EDA56AA85BE22EE26534">Wing petals</underline>
16 ×
<quantity id="BE63B8D5C09970F007E9DA3B396E9C9D" metricMagnitude="-3" metricUnit="m" metricValue="6.0" unit="mm" value="6.0">6 mm</quantity>
, longer than keel petals; pale mauve, narrowly cultrate, straight, hooded and touching when viewed from front, furrowed from auricle to tip, sculpturing present, upper basal, with up to ten lamellae transcostal lamellae; fused to keel petals near base; apex rounded; claw
<quantity id="85C848456839EE99D7EEAA77E545DC5E" metricMagnitude="-3" metricUnit="m" metricValue="7.0" unit="mm" value="7.0">7 mm</quantity>
long.
<underline id="CE58570E1D28543E12AFCABE4C3510E5">Keel petals</underline>
13 ×
<quantity id="FC6A417F91836E972D90F382D64CDD01" metricMagnitude="-3" metricUnit="m" metricValue="7.0" unit="mm" value="7.0">7 mm</quantity>
, tip discoloured with an oblong-shaped purple discolouration otherwise white, apex acute; claw
<quantity id="9C5727A16E4641701F031F1D856E89A9" metricMagnitude="-3" metricUnit="m" metricValue="6.5" metricValueMax="7.0" metricValueMin="6.0" unit="mm" value="6.5" valueMax="7.0" valueMin="6.0">67 mm</quantity>
long.
<underline id="9AE05563FA1F09F3BAED1CC628B6A6EA">Androecium</underline>
13 ×
<quantity id="B60C4CC5911A341C45776D836738454D" metricMagnitude="-3" metricUnit="m" metricValue="2.0" unit="mm" value="2.0">2 mm</quantity>
when closed, tenth filament mostly free but slightly adherent in lower third.
<underline id="0FF9BCD1A1DB3711B2A68AB189078E87">Pistil</underline>
<quantity id="92FE25C65DD7C868AC64E06A36C5865C" metricMagnitude="-2" metricUnit="m" metricValue="1.2" unit="mm" value="12.0">12 mm</quantity>
long, ovary
<quantity id="9DD8D93836D261C2B82862C5663A4033" metricMagnitude="-3" metricUnit="m" metricValue="1.5" unit="mm" value="1.5">1.5 mm</quantity>
long; style filiform,
<quantity id="9C6AC5331737FABDE14593F4631B0F56" metricMagnitude="-3" metricUnit="m" metricValue="9.0" unit="mm" value="9.0">9 mm</quantity>
to point of flexure, glabrous but with few stalked club-shaped glands on ovary; pedicellate, gynophore
<quantity id="62AA5FD75F7113E738899D7F877497CC" metricMagnitude="-4" metricUnit="m" metricValue="5.0" unit="mm" value="0.5">0.5 mm</quantity>
; height of curvature
<quantity id="733325B03C9589D2BFE3E50D35BCC691" metricMagnitude="-3" metricUnit="m" metricValue="4.5" unit="mm" value="4.5">4.5 mm</quantity>
, stigma penicillate.
<underline id="3DDF436954C1B3470028C3125DF462BC">Fruits</underline>
6 ×
<quantity id="3A8CE58F3C47A902A52A33FC7F9A3817" metricMagnitude="-3" metricUnit="m" metricValue="4.0" unit="mm" value="4.0">4 mm</quantity>
, papery, reticulate, black, oblong.
<underline id="010A8F16A066A6F66873974C546E27CC">Seeds</underline>
4 ×
<quantity id="D57B9EFC8D86C6238D7C59C070200374" metricMagnitude="-3" metricUnit="m" metricValue="5.0" unit="mm" value="5.0">5 mm</quantity>
, brownish black; hilum white, raised
<quantity id="F8B25F8AC60DA09B937D102BF4E1484F" metricMagnitude="-4" metricUnit="m" metricValue="5.0" unit="mm" value="0.5">0.5 mm</quantity>
.
</paragraph>
</subSubSection>
<subSubSection id="SECID0EUIAG" type="distribution">
<paragraph id="214D283A4E644243AB00856136F0D634">
<heading id="19932951988B4A2A80D34C8EF8E6E960" reason="title">Distribution and habitat.</heading>
</paragraph>
<paragraph id="132443F55ADCBBCEDCE33EA797E54D5B">
<taxonomicName id="C82B2F33C3BCB52EB659DC363E9FCF7C" class="Magnoliopsida" family="Fabaceae" genus="Psoralea" kingdom="Plantae" order="Fabales" phylum="Tracheophyta" rank="species" species="pallescens">
<emphasis id="34FB02D45E3824EB9376FEA51EFB929E" italics="true">Psoralea pallescens</emphasis>
</taxonomicName>
is currently known from the Riviersonderend Mountains from Greyton to Riviersonderend (Fig.
<figureCitation id="A40365885CC4EF01EBCEA334A5F57EE7" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Known distribution of the ten described Psoralea species. Map by Abubakar Bello." figureDoi="10.5091/plecevo.120171.figure2" httpUri="https://binary.pensoft.net/fig/1105540">2</figureCitation>
). It is restricted to terraces on rocky southern open slopes on Table Mountain Sandstone in Greyton Shale Fynbos (FFh 7) at
<quantity id="AF6EC24EE15F03042F181DC196249B78" metricMagnitude="2" metricUnit="m" metricValue="2.75" metricValueMax="3.0" metricValueMin="2.5" unit="m" value="275.0" valueMax="300.0" valueMin="250.0">250300 m</quantity>
a. s. l. and on the NW aspect of seasonally waterlogged sandstone streambanks (
<bibRefCitation id="7924E0C6EC539B65C8428002C1E67ED6" author="Rebelo" editor="Mucina L &amp; Rutherford MC" etAl="et al." firstAuthor="Rebelo" journalOrPublisher="Strelitzia 19. South African National Biodiversity Institute, Pretoria" pagination="53-219" refId="B12" refString="Rebelo AG, Boucher C, Helme N, Mucina L, Rutherford MC (2006) Fynbos Biome. In: Mucina L, Rutherford MC (Eds) The Vegetation of South Africa, Lesotho, and Swaziland. Strelitzia 19. South African National Biodiversity Institute, Pretoria, 53219." title="Fynbos Biome." volumeTitle="The Vegetation of South Africa, Lesotho, and Swaziland." year="2006">Rebelo et al. 2006</bibRefCitation>
).
</paragraph>
</subSubSection>
<subSubSection id="SECID0ENJAG" type="phenology">
<paragraph id="169D8B91055543A124BEAE5F751C726F">
<heading id="3AF27991756203FE4FE106218233FE87" reason="title">Phenology and ecology.</heading>
</paragraph>
<paragraph id="760DC954C3AF9F8A92848E2ECB5E9A96">
Flowering takes place mainly from November to December and sporadically up to June. It is unique in the genus
<taxonomicName id="11D28BA645A8A0539BB1CEBCC8F98667" class="Magnoliopsida" family="Fabaceae" genus="Psoralea" kingdom="Plantae" order="Fabales" phylum="Tracheophyta" rank="genus">
<emphasis id="D397327990AAFB6011C771D98E21511A" italics="true">Psoralea</emphasis>
</taxonomicName>
in having a strongly accrescent calyx that swells into a shiny, oily, fleshy, berry-like structure during seed maturation by the teeth enclosing tightly into a closed structure. When the seed is mature, and the conditions are right the calyx dries out, the teeth open and the single papery, reticulate, black, oblong fruit becomes exposed. At this point, the calyx is covered in dark orange glands. Dispersal usually happens under windy conditions when the stiff branches are shaken by wind and the papery fruit is expelled. Dispersal is primarily by wind and secondarily by water as the light papery fruits float easily and may wash away from the zone of ejection. It grows at a lower altitude or in valleys, sometimes higher up, than does
<taxonomicName id="ED97486A74CF3DEBB2D2DBB66A86B02A" class="Magnoliopsida" family="Fabaceae" genus="Psoralea" kingdom="Plantae" order="Fabales" phylum="Tracheophyta" rank="species" species="usitata">
<emphasis id="9CA87BAA9AEFD672D478168A9682A95A" italics="true">P. usitata</emphasis>
</taxonomicName>
which is a montane species of seepages and stream banks at higher altitudes.
</paragraph>
<caption id="13892FC17689BE23C42C11C09C2D1B98" ID-DOI="10.5091/plecevo.120171.figure6" ID-arpha="706D4D9C-D815-541A-B1CF-A2739CB6DB1C" httpUri="https://binary.pensoft.net/fig/1105544" startId="F6">
<paragraph id="A1EAF653D1520DA097CA1D3E964D5DBA">
<label id="404428676B20AAD48E30F7F9E5D0BA4F">Figure 6.</label>
</paragraph>
<paragraph id="9B1C2BAB599BB64C813DCAD767987F08">
<taxonomicName id="79C6F5DB6002F783D1F3491B05D8D801" class="Magnoliopsida" family="Fabaceae" genus="Psoralea" kingdom="Plantae" order="Fabales" phylum="Tracheophyta" rank="species" species="pallescens">
<emphasis id="7DB384D3D24A75301D8359F027F8A00F" italics="true">Psoralea pallescens</emphasis>
</taxonomicName>
.
<emphasis id="BE6FF7AC1FC5A387DBCDA3D293647969" bold="true">A</emphasis>
. Habitat.
<emphasis id="9241F7EE5CD8E6EEC4D0C9BFA358BDBA" bold="true">B</emphasis>
. Habit of young plant.
<emphasis id="9C75475BE343DF81149BC007EB926DB1" bold="true">C</emphasis>
. Cluster of fruiting calyces.
<emphasis id="68A6BF1002DDA97B22D3B9FEAAFD257F" bold="true">D</emphasis>
. Close-up of opened dried calyx teeth of calyces releasing seeds.
<emphasis id="DB925BAC6036F30EBDA5AE45DD32067F" bold="true">E</emphasis>
. Stages of fruiting calyx maturation. Calyx strongly accrescent, oily, fleshy, and swollen with the teeth tightly closed during seed maturation.
<emphasis id="F6F83BAFE25FD906C43A6939C625ED43" bold="true">F</emphasis>
. Terminal cluster of solitary axillary flowers.
<emphasis id="15EF1CA966760C89745805144253ADD6" bold="true">G</emphasis>
. Habit of mature plant.
<emphasis id="B78457BE423039D5BE58A748A4A2E07A" bold="true">H</emphasis>
. Flowering in upper axils of terminal seasonal shoot. Photographs: A, C E by Charles Stirton; B, F H by Klaus Wehrlin.
</paragraph>
</caption>
</subSubSection>
<subSubSection id="SECID0ENLAG" type="etymology">
<paragraph id="3B079E43C12862FBDC971AAAAC547DBF">
<heading id="0CBB2338B869CBED52B0402DC6794B7A" reason="title">Etymology.</heading>
</paragraph>
<paragraph id="CBC6810E8464A69408AE76CA6011F1F8">
The specific epithet
<emphasis id="E32E1965F88317622E3C68324FA78ABE" italics="true">pallescens</emphasis>
(Latin pallescens = becoming pale) alludes to the pale mauve flowers.
</paragraph>
</subSubSection>
<subSubSection id="SECID0EGMAG" type="Preliminary IUCN conservation assessment">
<paragraph id="BE9140845AE68074A903B10D4C5B7111">
<heading id="D2598F9A44518C6A73A4EC72D25D934E" reason="title">Preliminary IUCN conservation assessment.</heading>
</paragraph>
<paragraph id="CF9357B1392C8C9B96AEEB5EA079A1EB">
This reseeding species is quite common where it occurs in large colonies. It can be expected to be found elsewhere on the Riviersonderend Mountains, but the area is surprisingly under-collected. It has a narrow distribution range and a small area of occupancy (&lt;
<quantity id="5CEC170EEB0E8DD1D5C39D30BB64D758" metricMagnitude="6" metricUnit="m" metricValue="2.0" unit="km" value="2000.0">2000 km</quantity>
<superScript id="BA376F07049E296B11AFB39F50FBF347">2</superScript>
), hence based on the IUCN criteria (
<bibRefCitation id="FC734524E0492639E0E1771DB49B8A22" refId="B7" refString="IUCN (2012) IUCN Red List categories and criteria version 3.1. IUCN Species Survival Commission, Gland, Switzerland and Cambridge, UK, 132. https://portals.iucn.org/library/node/7977 [accessed 30. 05. 2024]" url="https://portals.iucn.org/library/node/7977" year="2012">IUCN 2012</bibRefCitation>
) its present status corresponds to Vulnerable: VU B 2 ab (i, ii, iii).
</paragraph>
</subSubSection>
<subSubSection id="SECID0ESMAG" type="material">
<paragraph id="5891D8345BE74A90D383323062644F7F">
<heading id="F4E68CC75EB11F3D780C919EB43E13D7" reason="title">Additional material examined.</heading>
</paragraph>
<paragraph id="EC8ED0493C4FF3BFF8A4E60959060374">
<materialsCitation id="56DF8DB94ED492ECA2F478BD50C72039" collectingDate="2017-06-15" collectorName="Brian du Preez" country="South Africa" county="Caledon" location="Hike" specimenCount="1" stateProvince="Western Cape">
<collectingCountry id="343DBDE7E6CED434E6CBDA440933ABD5" name="South Africa">SOUTH AFRICA</collectingCountry>
<emphasis id="AE86E3AB07B1486C23640C35D650544C" bold="true">
<collectingRegion id="DB8F413E4A05E3750F7DB5EF5A1A75CA" country="South Africa" name="Western Cape">Western Cape Province</collectingRegion>
: 3419 (
<collectingCounty id="902E2CD6D7002A125B69CBBB32CB7222">Caledon</collectingCounty>
)
</emphasis>
• Greyton-McGregor
<location id="55126F9A7F966E9DD0983B460952E417" LSID="urn:lsid:plazi:treatment:B28CF062511B5ACD8B08156821E8B53A:55126F9A7F966E9DD0983B460952E417" country="South Africa" county="Caledon" name="Hike" stateProvince="Western Cape">Hike</location>
( BA);
<date id="33C4F97B062794E7A71FF9EAFAA2DF94" value="2017-06-15">
<collectingDate id="2B4DC1EB1BF24B3D775E25BAEFFADFE9" value="2017-06-15">15 Jun. 2017</collectingDate>
</date>
;
<emphasis id="B2E143BB5E9AD627BB08C2EA23881A5A" italics="true">
<collectorName id="5FBAF786D3BA9B7CF45443D3F454ACF2">Brian du Preez</collectorName>
89
</emphasis>
;
<abbrev id="ABBRID0E3MAG" xlink_title="Bolus herbarium">BOL</abbrev>
</materialsCitation>
<materialsCitation id="81357A3C46DE6D4681A42CFCF62FCEB0" collectingDate="2009-04-01" collectorName="Helme" country="South Africa" county="Caledon" location="Riviersonderend mountains" municipality="Groot Toren" specimenCount="1" stateProvince="Western Cape">
<collectingMunicipality id="7496461023B895343725A1075DB78701">Groot Toren</collectingMunicipality>
181, mid slopes of
<location id="07BD186B4813F37A9A463BB05B75E2DE" LSID="urn:lsid:plazi:treatment:B28CF062511B5ACD8B08156821E8B53A:07BD186B4813F37A9A463BB05B75E2DE" country="South Africa" county="Caledon" municipality="Groot Toren" name="Riviersonderend mountains" stateProvince="Western Cape">Riviersonderend mountains</location>
( BB);
<date id="3F17CE110122EFFFFEDA3AD973EA0949" value="2009-04-01">
<collectingDate id="1BEB8770EBDC84029674087915D532DB" value="2009-04-01">1 Apr. 2009</collectingDate>
</date>
;
<emphasis id="CBC49C18A3507EC09A40D6925FBDAC41" italics="true">
<collectorName id="3AAE3A268C43CB89842FD63898A2B7DE">Helme</collectorName>
6025
</emphasis>
; NBG
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection id="SECID0ECNAG" type="Observations">
<paragraph id="22497374D6C3FF7E889175E49F7FB6DF">
<heading id="AF4F2EE191CFE52CDEF8DA973EEBDBD1" reason="title">Observations.</heading>
</paragraph>
<paragraph id="D6B1F1BF33DF95380E13E9A34CEB0A59">
<collectingCountry id="D351FD8D34A1F2D9A0B54DA2F071E662" name="South Africa">South Africa</collectingCountry>
,
<collectingRegion id="DB32F32F96D8D658E88BC99EF77CEB8E" country="South Africa" name="Western Cape">Western Cape Province</collectingRegion>
: Greyton, Genadendal,
<date id="B3C3B2116DC8916B1B4B064D6970704A" value="2020-03-08">8 Mar. 2020</date>
, obs. by Klaus Wehrlin,
<ext-link id="A4363E6CF9E575005D3C425027218825" ext-link-type="uri" xlink_href="https://www.inaturalist.org/observations/39702444" xlink_type="simple">https://www.inaturalist.org/observations/39702444</ext-link>
; Greyton Nature Reserve,
<date id="458C94006F8763A7A72C240BA11782C7" value="2021-04-04">4 Apr. 2021</date>
, obs. by Klaus Wehrlin,
<ext-link id="C84018667CA6657B4BC70732F087E642" ext-link-type="uri" xlink_href="https://www.inaturalist.org/observations/70687565" xlink_type="simple">https://www.inaturalist.org/observations/70687565</ext-link>
; Greyton,
<date id="D1C9E21B0EA3E13F85858B248450FC25" value="2020-12-16">16 Dec. 2020</date>
, obs. by Matthew Fainman,
<ext-link id="34A0FBDE6BEB0DF007E2B8698D19D355" ext-link-type="uri" xlink_href="https://www.inaturalist.org/observations/66699599" xlink_type="simple">https://www.inaturalist.org/observations/66699599</ext-link>
; Greyton,
<date id="A15EBD9B36958946DC4124D25C9F2C47" value="2020-03-08">8 Mar. 2020</date>
, obs. by Klaus Werlin,
<ext-link id="3A3E5A8370116306696339415A565DE6" ext-link-type="uri" xlink_href="https://www.inaturalist.org/observations/39702444" xlink_type="simple">https://www.inaturalist.org/observations/39702444</ext-link>
.
</paragraph>
</subSubSection>
</treatment>
</document>