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<mods:title id="E1DF6E70FD523EF0DDEE25F04C02FE1D">Six new species of Ruschieae (Aizoaceae) and further notes in Ruschia</mods:title>
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<paragraph id="D41D733F05674710FCA5F9222FA5F935" blockId="9.[818,1407,1691,1739]" pageId="9" pageNumber="153">
3.2. Correction of lectotypification of
<taxonomicName id="13A208BC05674710FB1BF9222FA5F935" authority="(L. Bolus) Schwantes" class="Magnoliopsida" family="Aizoaceae" genus="Ruschia" kingdom="Plantae" order="Caryophyllales" pageId="9" pageNumber="153" phylum="Tracheophyta" rank="species" species="indurata">Ruschia indurata (L.Bolus) Schwantes</taxonomicName>
</paragraph>
<paragraph id="D41D733F05674713FCC6F9492D89F9BE" blockId="9.[818,1487,1775,1990]" lastBlockId="10.[100,770,1552,1990]" lastPageId="10" lastPageNumber="154" pageId="9" pageNumber="153">
Louisa
<bibRefCitation id="B0330ECE05674710FC01F9492874F8FD" author="Bolus" box="[918,1093,1776,1795]" firstAuthor="Bolus" journalOrPublisher="Ann. Bolus Herb." page="136" pageId="9" pageNumber="153" pagination="123 - 146" part="3" refId="ref12139" refString="Bolus, H. M. L., 1922. Novitates africanae. Ann. Bolus Herb. 3, 123 - 146." title="Novitates africanae" type="journal article" year="1922">Bolus (1922: 136)</bibRefCitation>
based her protologue for
<taxonomicName id="13A208BC05674710FAD0F956299EF8FD" box="[1351,1455,1775,1795]" class="Magnoliopsida" family="Aizoaceae" genus="Ruschia" kingdom="Plantae" order="Caryophyllales" pageId="9" pageNumber="153" phylum="Tracheophyta" rank="species" species="indurata">R. indurata</taxonomicName>
on three different collections, all of which had been cultivated at Kirstenbosch for several years. An illustration was made by Mary Page in November 1917 of the type, showing a single clump, but citing all three collections at the top of this drawing as the voucher (
<figureCitation id="4C996FBA05674710FA16F8E629F3F88C" box="[1409,1474,1887,1906]" captionStart="Fig" captionStartId="11.[189,214,1339,1353]" captionTargetBox="[378,1210,148,1309]" captionTargetId="figure-434@11.[378,1210,148,1309]" captionTargetPageId="11" captionText="Fig. 12. Illustration of Ruschia indurata (Mesembryanthemum induratum). Here three collections are cited (top corner), as in the protologue. Artist: M.M.Page." figureDoi="http://doi.org/10.5281/zenodo.8121026" httpUri="https://zenodo.org/record/8121026/files/figure.png" pageId="9" pageNumber="153">Fig. 12</figureCitation>
). Noteworthy is that the three collections came from three widely separated localities. One is from the Western Cape, at Beaufort West (Mathews sub NBG 2393/17). The other two are from the Eastern Cape, from Steytlerville (E. Pillans sub NBG 383/16) and from Steynsburg (H. de Villiers sub NBG 266/16).
</paragraph>
<caption id="80DD23B705644713FFF3FA0D29FFFA3C" ID-DOI="http://doi.org/10.5281/zenodo.8121022" ID-Zenodo-Dep="8121022" box="[100,1486,1458,1474]" httpUri="https://zenodo.org/record/8121022/files/figure.png" pageId="10" pageNumber="154" startId="10.[100,125,1460,1474]" targetBox="[378,1210,148,1429]" targetPageId="10">
<paragraph id="D41D733F05644713FFF3FA0D29FFFA3C" blockId="10.[100,1486,1458,1474]" box="[100,1486,1458,1474]" pageId="10" pageNumber="154">
Fig. 11. Lectotype of
<taxonomicName id="13A208BC05644713FE9FFA0A2DB4FA3C" box="[264,389,1459,1474]" class="Magnoliopsida" family="Aizoaceae" genus="Ruschia" kingdom="Plantae" order="Caryophyllales" pageId="10" pageNumber="154" phylum="Tracheophyta" rank="species" species="indurata">Ruschia indurata</taxonomicName>
designated by H.E.K. Hartmann on 22nd June 1995. Collection by J.W. Mathews sub NBG 2393/17 (barcode BOL134738) made at Beaufort West.
</paragraph>
</caption>
<paragraph id="D41D733F05644713FF13F9F02E38F8FD" blockId="10.[100,770,1552,1990]" pageId="10" pageNumber="154">
<bibRefCitation id="B0330ECE05644713FF13F9F02D69F9A5" author="Hartmann" box="[132,344,1608,1628]" firstAuthor="Hartmann" journalOrPublisher="Bradleya" page="53" pageId="10" pageNumber="154" pagination="38 - 74" part="17" refId="ref12314" refString="Hartmann, H. E. K., 1999. An annotated list of the species placed in Ruschia (Aizoaceae). Bradleya 17, 38 - 74." title="An annotated list of the species placed in Ruschia (Aizoaceae)" type="journal article" year="1999">Hartmann (1999: 53)</bibRefCitation>
indicated Pillans collection from Steytlerville as the lectotype. However, neither Pillans nor de Villiers collections are in the Bolus Herbarium. Only one of the three syntypes, the collection by Mathews (
<figureCitation id="4C996FBA05644713FEDAF9252DBFF951" box="[333,398,1692,1711]" captionStart="Fig" captionStartId="10.[100,125,1460,1474]" captionTargetBox="[378,1210,148,1429]" captionTargetId="figure-369@10.[378,1211,148,1429]" captionTargetPageId="10" captionText="Fig. 11. Lectotype of Ruschia indurata designated by H.E.K.Hartmann on 22nd June 1995. Collection by J.W.Mathews sub NBG 2393/17 (barcode BOL134738) made at Beaufort West." figureDoi="http://doi.org/10.5281/zenodo.8121022" httpUri="https://zenodo.org/record/8121022/files/figure.png" pageId="10" pageNumber="154">Fig. 11</figureCitation>
), is in the Bolus Herbarium. An annotation on this sheet indicates that Hartmann selected this collection as the lectotype in 1995. We therefore conclude that Pillans collection was cited in error by
<bibRefCitation id="B0330ECE05644713FECCF9492E32F8FD" author="Hartmann" box="[347,515,1776,1795]" firstAuthor="Hartmann" journalOrPublisher="Bradleya" pageId="10" pageNumber="154" pagination="38 - 74" part="17" refId="ref12314" refString="Hartmann, H. E. K., 1999. An annotated list of the species placed in Ruschia (Aizoaceae). Bradleya 17, 38 - 74." title="An annotated list of the species placed in Ruschia (Aizoaceae)" type="journal article" year="1999">Hartmann (1999)</bibRefCitation>
.
</paragraph>
<paragraph id="D41D733F05644713FF13F8B52C98F871" blockId="10.[100,770,1552,1990]" pageId="10" pageNumber="154">
Recent field work in the Beaufort West area suggests that
<taxonomicName id="13A208BC05644713FD2DF8B32C85F8C4" class="Magnoliopsida" family="Aizoaceae" genus="Ruschia" kingdom="Plantae" order="Caryophyllales" pageId="10" pageNumber="154" phylum="Tracheophyta" rank="species" species="indurata">Ruschia indurata</taxonomicName>
is a rare species, endemic to certain calcritic pavements on the floor of the valley. So far, only a few localities within the same calcrete formation near Beaufort West are known where this species occurs.
</paragraph>
<paragraph id="D41D733F05644713FF13F82F2FA2F989" blockId="10.[100,770,1552,1990]" lastBlockId="10.[818,1488,1552,1990]" pageId="10" pageNumber="154">
<taxonomicName id="13A208BC05644713FF13F82F2D12F854" box="[132,291,1942,1962]" class="Magnoliopsida" family="Aizoaceae" genus="Ruschia" kingdom="Plantae" order="Caryophyllales" pageId="10" pageNumber="154" phylum="Tracheophyta" rank="species" species="indurata">Ruschia indurata</taxonomicName>
is one of several dwarf succulent species in subgenus
<taxonomicName id="13A208BC05644713FF3CF80B2CC2F838" box="[171,243,1970,1990]" class="Magnoliopsida" family="Aizoaceae" genus="Ruschia" kingdom="Plantae" order="Caryophyllales" pageId="10" pageNumber="154" phylum="Tracheophyta" rank="subGenus" subGenus="Ruschia">Ruschia</taxonomicName>
, which are characterized by enclosed internodes, leaves that are toothy towards their apices and 5-locular capsules where the interior of the capsule disintegrates, so that soon only five pungent bundles remain on the stalk and project above the plant (
<figureCitation id="4C996FBA05644713FCAEF9DD2FB4F989" box="[825,901,1636,1655]" captionStart="Fig" captionStartId="12.[100,125,904,918]" captionTargetBox="[252,1332,152,874]" captionTargetId="figure-683@12.[250,1338,148,874]" captionTargetPageId="12" captionText="Fig. 13. Habit of Ruschia indurata (A, B) and R.pulvinaris (C, D).Ruschia indurata forms dense cushions only, occasionally with short side branches extending beyond the cushion (A), whereas old plants of R.pulvinaris may spread and form extensive, much laxer cushions (D)." figureDoi="http://doi.org/10.5281/zenodo.8121030" httpUri="https://zenodo.org/record/8121030/files/figure.png" pageId="10" pageNumber="154">Fig. 13A</figureCitation>
).
</paragraph>
<paragraph id="D41D733F05644712FCC6F9392C96FA2E" blockId="10.[818,1488,1552,1990]" lastBlockId="11.[100,771,1412,1990]" lastPageId="11" lastPageNumber="155" pageId="10" pageNumber="154">
<bibRefCitation id="B0330ECE05644713FCC6F9392FCEF96D" author="Bolus" box="[849,1023,1664,1684]" firstAuthor="Bolus" journalOrPublisher="Notes mesembryanthemum and allied genera" page="241" pageId="10" pageNumber="154" pagination="241 - 242" part="2" refId="ref12164" refString="Bolus, H. M. L., 1931. Ruschia pulvinaris. Notes mesembryanthemum and allied genera 2, 241 - 242." title="Ruschia pulvinaris" type="journal article" year="1931">Bolus (1931: 241)</bibRefCitation>
noted that
<taxonomicName id="13A208BC05644713FBE6F9C6292CF96D" box="[1137,1309,1663,1683]" class="Magnoliopsida" family="Aizoaceae" genus="Ruschia" kingdom="Plantae" order="Caryophyllales" pageId="10" pageNumber="154" phylum="Tracheophyta" rank="species" species="pulvinaris">Ruschia pulvinaris</taxonomicName>
, which was based on the gathering R. du Plessis sub NBG 2004/29 from Steynsburg, is very similar to
<taxonomicName id="13A208BC05644713FC52F90E281DF935" box="[965,1068,1719,1739]" class="Magnoliopsida" family="Aizoaceae" genus="Ruschia" kingdom="Plantae" order="Caryophyllales" pageId="10" pageNumber="154" phylum="Tracheophyta" rank="species" species="indurata">R. indurata</taxonomicName>
. The overall dimensions of the two species are superficially similar, but
<taxonomicName id="13A208BC05644713FBD4F96A2898F919" box="[1091,1193,1747,1767]" class="Magnoliopsida" family="Aizoaceae" genus="Ruschia" kingdom="Plantae" order="Caryophyllales" pageId="10" pageNumber="154" phylum="Tracheophyta" rank="species" species="indurata">R. indurata</taxonomicName>
differs from
<taxonomicName id="13A208BC05644713FAB2F96A29FEF919" box="[1317,1487,1747,1767]" class="Magnoliopsida" family="Aizoaceae" genus="Ruschia" kingdom="Plantae" order="Caryophyllales" pageId="10" pageNumber="154" phylum="Tracheophyta" rank="species" species="pulvinaris">Ruschia pulvinaris</taxonomicName>
by its more compact habit (
<figureCitation id="4C996FBA05644713FBD0F9492880F8FD" box="[1095,1201,1776,1795]" captionStart="Fig" captionStartId="12.[100,125,904,918]" captionTargetBox="[252,1332,152,874]" captionTargetId="figure-683@12.[250,1338,148,874]" captionTargetPageId="12" captionText="Fig. 13. Habit of Ruschia indurata (A, B) and R.pulvinaris (C, D).Ruschia indurata forms dense cushions only, occasionally with short side branches extending beyond the cushion (A), whereas old plants of R.pulvinaris may spread and form extensive, much laxer cushions (D)." figureDoi="http://doi.org/10.5281/zenodo.8121030" httpUri="https://zenodo.org/record/8121030/files/figure.png" pageId="10" pageNumber="154">Fig. 13A, B</figureCitation>
) and its smaller leaves (4-8 (-10) mm long in
<taxonomicName id="13A208BC05644713FC69F8B3285AF8E0" box="[1022,1131,1802,1822]" class="Magnoliopsida" family="Aizoaceae" genus="Ruschia" kingdom="Plantae" order="Caryophyllales" pageId="10" pageNumber="154" phylum="Tracheophyta" rank="species" species="indurata">R. indurata</taxonomicName>
, to
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long in
<taxonomicName id="13A208BC05644713FADFF8B329F3F8E0" box="[1352,1474,1802,1822]" class="Magnoliopsida" family="Aizoaceae" genus="Ruschia" kingdom="Plantae" order="Caryophyllales" pageId="10" pageNumber="154" phylum="Tracheophyta" rank="species" species="pulvinaris">R. pulvinaris</taxonomicName>
). Although plants of
<taxonomicName id="13A208BC05644713FC63F89F285AF8C4" box="[1012,1131,1830,1850]" class="Magnoliopsida" family="Aizoaceae" genus="Ruschia" kingdom="Plantae" order="Caryophyllales" pageId="10" pageNumber="154" phylum="Tracheophyta" rank="species" species="pulvinaris">R. pulvinaris</taxonomicName>
also form cushions, these cushions are much larger and older plants often spread to
<quantity id="135ADEDA05644713FADDF8FA29BDF8A9" box="[1354,1420,1859,1879]" metricMagnitude="-1" metricUnit="m" metricValue="5.0" pageId="10" pageNumber="154" unit="cm" value="50.0">50 cm</quantity>
diam. (
<figureCitation id="4C996FBA05644713FCAEF8E62FB6F88C" box="[825,903,1887,1906]" captionStart="Fig" captionStartId="12.[100,125,904,918]" captionTargetBox="[252,1332,152,874]" captionTargetId="figure-683@12.[250,1338,148,874]" captionTargetPageId="12" captionText="Fig. 13. Habit of Ruschia indurata (A, B) and R.pulvinaris (C, D).Ruschia indurata forms dense cushions only, occasionally with short side branches extending beyond the cushion (A), whereas old plants of R.pulvinaris may spread and form extensive, much laxer cushions (D)." figureDoi="http://doi.org/10.5281/zenodo.8121030" httpUri="https://zenodo.org/record/8121030/files/figure.png" pageId="10" pageNumber="154">Fig. 13D</figureCitation>
). Noteworthy is also the difference in the color of the leaves, which is a glaucous-green in
<taxonomicName id="13A208BC05644713FBDAF8C328F0F870" box="[1101,1217,1914,1934]" class="Magnoliopsida" family="Aizoaceae" genus="Ruschia" kingdom="Plantae" order="Caryophyllales" pageId="10" pageNumber="154" phylum="Tracheophyta" rank="species" species="pulvinaris">R. pulvinaris</taxonomicName>
as opposed to whitish-grey in
<taxonomicName id="13A208BC05644713FCDCF82F2F82F854" box="[843,947,1942,1962]" class="Magnoliopsida" family="Aizoaceae" genus="Ruschia" kingdom="Plantae" order="Caryophyllales" pageId="10" pageNumber="154" phylum="Tracheophyta" rank="species" species="indurata">R. indurata</taxonomicName>
. The whitish-grey color of the leaves is typical for several species in the tribe
<taxonomicName id="13A208BC05644713FB88F80A28B1F838" box="[1055,1152,1971,1990]" class="Magnoliopsida" family="Aizoaceae" kingdom="Plantae" order="Caryophyllales" pageId="10" pageNumber="154" phylum="Tracheophyta" rank="tribe" tribe="Ruschieae">Ruschieae</taxonomicName>
that are endemic to calcretes and limestones (e.g.
<taxonomicName id="13A208BC05654712FE90FA3D2E8BFA66" authority="(L. Bolus) H. E. K. Hartmann" authorityName="H. E. K. Hartmann" baseAuthorityName="L. Bolus" box="[263,698,1412,1432]" class="Magnoliopsida" family="Aizoaceae" genus="Antimima" kingdom="Plantae" order="Caryophyllales" pageId="11" pageNumber="155" phylum="Tracheophyta" rank="species" species="lawsonii">Antimima lawsonii (L.Bolus) H.E.K.Hartmann</taxonomicName>
,
<taxonomicName id="13A208BC05654712FD51FA3D2D9CFA4A" authority="(L. Bolus) L. Bolus" authorityName="L. Bolus" baseAuthorityName="L. Bolus" class="Magnoliopsida" family="Aizoaceae" genus="Lampranthus" kingdom="Plantae" order="Caryophyllales" pageId="11" pageNumber="155" phylum="Tracheophyta" rank="species" species="ceriseus">Lampranthus ceriseus (L.Bolus) L.Bolus</taxonomicName>
and
<taxonomicName id="13A208BC05654712FE70FA192CADFA2E" authority="(L. Bolus) L. Bolus" authorityName="L. Bolus" baseAuthorityName="L. Bolus" class="Magnoliopsida" family="Aizoaceae" genus="Ruschia" kingdom="Plantae" order="Caryophyllales" pageId="11" pageNumber="155" phylum="Tracheophyta" rank="species" species="calcicola">Ruschia calcicola (L.Bolus) L. Bolus</taxonomicName>
).
</paragraph>
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<paragraph id="D41D733F05654712FF2AFA822949FAB4" blockId="11.[189,1400,1339,1354]" box="[189,1400,1339,1354]" pageId="11" pageNumber="155">
Fig. 12. Illustration of
<taxonomicName id="13A208BC05654712FEFCFA822DD9FAB4" box="[363,488,1339,1354]" class="Magnoliopsida" family="Aizoaceae" genus="Ruschia" kingdom="Plantae" order="Caryophyllales" pageId="11" pageNumber="155" phylum="Tracheophyta" rank="species" species="indurata">Ruschia indurata</taxonomicName>
(
<taxonomicName id="13A208BC05654712FE64FA822ED4FAB4" box="[499,741,1339,1354]" class="Magnoliopsida" family="Aizoaceae" genus="Mesembryanthemum" kingdom="Plantae" order="Caryophyllales" pageId="11" pageNumber="155" phylum="Tracheophyta" rank="species" species="induratum">Mesembryanthemum induratum</taxonomicName>
). Here three collections are cited (top corner), as in the protologue. Artist: M.M. Page.
</paragraph>
</caption>
<paragraph id="D41D733F05654712FF13FA612EA2F9C1" blockId="11.[100,771,1412,1990]" pageId="11" pageNumber="155">
<taxonomicName id="13A208BC05654712FF13FA612D1EFA12" box="[132,303,1496,1516]" class="Magnoliopsida" family="Aizoaceae" genus="Ruschia" kingdom="Plantae" order="Caryophyllales" pageId="11" pageNumber="155" phylum="Tracheophyta" rank="species" species="pulvinaris">Ruschia pulvinaris</taxonomicName>
grows in shallow soil overlying slabs of shale at altitudes of around
<quantity id="135ADEDA05654712FEB1FA4C2D83F9F6" box="[294,434,1525,1544]" metricMagnitude="3" metricUnit="m" metricValue="1.455" metricValueMax="1.46" metricValueMin="1.45" pageId="11" pageNumber="155" unit="m" value="1455.0" valueMax="1460.0" valueMin="1450.0">1450-1460 m</quantity>
a.s.l. (higher than the
<quantity id="135ADEDA05654712FD04FA4C2EE0F9F6" box="[659,721,1525,1544]" metricMagnitude="2" metricUnit="m" metricValue="9.0" pageId="11" pageNumber="155" unit="m" value="900.0">900 m</quantity>
a.s.l. recorded for
<taxonomicName id="13A208BC05654712FF76F9A92D76F9DA" box="[225,327,1552,1572]" class="Magnoliopsida" family="Aizoaceae" genus="Ruschia" kingdom="Plantae" order="Caryophyllales" pageId="11" pageNumber="155" phylum="Tracheophyta" rank="species" species="indurata">R. indurata</taxonomicName>
). Despite superficial similarities, the two species show important differences in their ecological niches.
</paragraph>
<paragraph id="D41D733F05654712FF13F9F12EE4F935" blockId="11.[100,771,1412,1990]" pageId="11" pageNumber="155">
Closely related is also
<taxonomicName id="13A208BC05654712FEF7F9FE2E04F9A5" authority="L. Bolus" authorityName="L. Bolus" box="[352,565,1607,1627]" class="Magnoliopsida" family="Aizoaceae" genus="Ruschia" kingdom="Plantae" order="Caryophyllales" pageId="11" pageNumber="155" phylum="Tracheophyta" rank="species" species="rigens">Ruschia rigens L.Bolus</taxonomicName>
, from the Bloemfontein area in the Free State. This shares the characteristics of the leaves and inflorescences, but forms more substantial cushions to
<quantity id="135ADEDA05654712FD35F9392EECF96A" box="[674,733,1664,1684]" metricMagnitude="-1" metricUnit="m" metricValue="1.5" pageId="11" pageNumber="155" unit="cm" value="15.0">15 cm</quantity>
tall and has longer and thicker leaves,
<quantity id="135ADEDA05654712FE38F9252E6CF951" box="[431,605,1692,1711]" metricMagnitude="-3" metricUnit="m" metricValue="4.0" pageId="11" pageNumber="155" unit="mm" value="4.0">25-30 X to 4 mm</quantity>
. All three species flower from late spring into summer, from October to December.
</paragraph>
<paragraph id="D41D733F05654712FF13F96D2DB6F838" blockId="11.[100,771,1412,1990]" pageId="11" pageNumber="155">
Our field work around Beaufort West and an investigation of herbarium specimens at BOL and NBG show that no similar species to
<taxonomicName id="13A208BC05654712FD66F9562C85F8E0" class="Magnoliopsida" family="Aizoaceae" genus="Ruschia" kingdom="Plantae" order="Caryophyllales" pageId="11" pageNumber="155" phylum="Tracheophyta" rank="species" species="indurata">R. indurata</taxonomicName>
have been recorded from this area. We therefore conclude that the application of the name
<taxonomicName id="13A208BC05654712FE33F89F2E3AF8C4" box="[420,523,1830,1850]" class="Magnoliopsida" family="Aizoaceae" genus="Ruschia" kingdom="Plantae" order="Caryophyllales" pageId="11" pageNumber="155" phylum="Tracheophyta" rank="species" species="indurata">R. indurata</taxonomicName>
must refer to the species which is endemic to the calcretes near Beaufort West. We believe that Bolus was mistaken that the collection from Steynsburg is the same as that from Beaufort West. As Pillans collection from Steytlerville is not at BOL, the identity of the species remains uncertain and requires further investigation.
</paragraph>
<paragraph id="D41D733F05654712FCC6FA3C2808FA4A" blockId="11.[818,1488,1413,1990]" pageId="11" pageNumber="155">Due to the confusion surrounding this species, we provide a detailed description below.</paragraph>
</subSubSection>
<subSubSection id="9CB820B405654712FCC6FA052F46FA12" pageId="11" pageNumber="155" type="nomenclature">
<paragraph id="D41D733F05654712FCC6FA052F46FA12" blockId="11.[818,1488,1413,1990]" pageId="11" pageNumber="155">
<taxonomicName id="13A208BC05654712FCC6FA0528E3FA2E" ID-CoL="4TQZB" authorityName="Schwantes" baseAuthorityName="L.Bolus" box="[849,1234,1468,1488]" class="Magnoliopsida" family="Aizoaceae" genus="Ruschia" higherTaxonomySource="CoL" kingdom="Plantae" order="Caryophyllales" pageId="11" pageNumber="155" phylum="Tracheophyta" rank="species" species="indurata">Ruschia indurata (L.Bolus) Schwantes</taxonomicName>
,
<treatmentCitation id="5503552E05654712FB48FA042F42FA12" pageId="11" pageNumber="155">Z. Sukkulentenk. 2: 187 (1926)</treatmentCitation>
.
</paragraph>
</subSubSection>
<subSubSection id="9CB820B405654712FCE8FA612F90F9F6" pageId="11" pageNumber="155" type="reference_group">
<paragraph id="D41D733F05654712FCE8FA612F90F9F6" blockId="11.[818,1488,1413,1990]" pageId="11" pageNumber="155">
<taxonomicName id="13A208BC05654712FCE8FA612931FA12" authorityName="L.Bolus" box="[895,1280,1496,1516]" class="Magnoliopsida" family="Aizoaceae" genus="Mesembryanthemum" higherTaxonomySource="CoL" kingdom="Plantae" order="Caryophyllales" pageId="11" pageNumber="155" phylum="Tracheophyta" rank="species" species="induratum">Mesembryanthemum induratum L.Bolus</taxonomicName>
,
<treatmentCitation id="5503552E05654712FA9BFA602FACF9F6" pageId="11" pageNumber="155">Ann. Bolus Herb. 3: 135 (1922)</treatmentCitation>
.
</paragraph>
</subSubSection>
<subSubSection id="9CB820B405654712FCC6F9A82F4CF989" pageId="11" pageNumber="155" type="materials_examined">
<paragraph id="D41D733F05654712FCC6F9A82F4CF989" blockId="11.[818,1488,1413,1990]" pageId="11" pageNumber="155">
<materialsCitation id="64CA796205654712FCC6F9A82F48F989" collectingDate="1917" collectionCode="BOL" collectorName="J. W. Mathews" country="South Africa" location="Beaufort West" pageId="11" pageNumber="155" specimenCode="BOL134738" specimenCount="1" stateProvince="Western Cape" typeStatus="lectotype">
<typeStatus id="0B19CD9D05654712FCC6F9A82F9EF9DA" box="[849,943,1553,1572]" pageId="11" pageNumber="155">Lectotype</typeStatus>
(cited erroneously by Hartmann in 1999 in Bradleya 17: 53 and corrected here): [
<collectingCountry id="ACB533AF05654712FBB5F99528ADF9C1" box="[1058,1180,1580,1599]" name="South Africa" pageId="11" pageNumber="155" value="South Africa">South Africa</collectingCountry>
,
<collectingRegion id="1666BDDD05654712FB32F9942900F9BE" box="[1189,1329,1581,1600]" country="South Africa" name="Western Cape" pageId="11" pageNumber="155">Western Cape</collectingRegion>
],
<location id="D17D25E405654712FAD7F99529FDF9BE" LSID="urn:lsid:plazi:treatment:5C0BC22905674715FCA5F9222EB3F838:D17D25E405654712FAD7F99529FDF9BE" box="[1344,1484,1580,1600]" country="South Africa" name="Beaufort West" pageId="11" pageNumber="155" stateProvince="Western Cape">Beaufort West</location>
,
<collectingDate id="B058AC1705654712FCA5F9F12F55F9A5" box="[818,868,1608,1627]" pageId="11" pageNumber="155" value="1917">
<date id="A01C55FF05654712FCA5F9F12F55F9A5" box="[818,868,1608,1627]" pageId="11" pageNumber="155" value="1917">1917</date>
</collectingDate>
,
<collectorName id="795716E905654712FCE5F9FE2FC6F9A5" box="[882,1015,1607,1627]" pageId="11" pageNumber="155">J.W. Mathews</collectorName>
sub NBG 2393/17 (
<collectionCode id="B2B3EBFA05654712FB56F9F128C0F9A5" box="[1217,1265,1608,1627]" collectionName="BOL" pageId="11" pageNumber="155">BOL</collectionCode>
!, barcode
<specimenCode id="8404DB4405654712FACCF9F129FDF9A5" box="[1371,1484,1608,1627]" pageId="11" pageNumber="155">BOL134738</specimenCode>
,
<figureCitation id="4C996FBA05654712FCA5F9DD2F41F989" box="[818,880,1636,1655]" captionStart="Fig" captionStartId="10.[100,125,1460,1474]" captionTargetBox="[378,1210,148,1429]" captionTargetId="figure-369@10.[378,1211,148,1429]" captionTargetPageId="10" captionText="Fig. 11. Lectotype of Ruschia indurata designated by H.E.K.Hartmann on 22nd June 1995. Collection by J.W.Mathews sub NBG 2393/17 (barcode BOL134738) made at Beaufort West." figureDoi="http://doi.org/10.5281/zenodo.8121022" httpUri="https://zenodo.org/record/8121022/files/figure.png" pageId="11" pageNumber="155">Fig. 11</figureCitation>
)
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection id="9CB820B405654715FCC6F9392D78FB2B" lastPageId="12" lastPageNumber="156" pageId="11" pageNumber="155" type="description">
<paragraph id="D41D733F05654715FCC6F9392D78FB2B" blockId="11.[818,1488,1413,1990]" lastBlockId="12.[100,770,995,1237]" lastPageId="12" lastPageNumber="156" pageId="11" pageNumber="155">
Densely branched dwarf succulent forming low cushions
<quantity id="135ADEDA05654712FCA5F9252FEAF951" box="[818,987,1692,1711]" metricMagnitude="-2" metricUnit="m" metricValue="8.5" metricValueMax="12.0" metricValueMin="5.0" pageId="11" pageNumber="155" unit="cm" value="8.5" valueMax="12.0" valueMin="5.0">3-5 X 5-12 cm</quantity>
, becoming woody at base, internodes not visible. Leaves opposite, grey, trigonous, fused into a sheath to
<quantity id="135ADEDA05654712FACBF90129A9F935" box="[1372,1432,1720,1739]" metricMagnitude="-3" metricUnit="m" metricValue="1.0" pageId="11" pageNumber="155" unit="mm" value="1.0">1 mm</quantity>
long, free parts spreading, keeled on the back,
<quantity id="135ADEDA05654712FB4CF96D2904F919" box="[1243,1333,1748,1767]" metricMagnitude="-3" metricUnit="m" metricValue="6.0" metricValueMax="8.0" metricValueMin="4.0" pageId="11" pageNumber="155" unit="mm" value="6.0" valueMax="8.0" valueMin="4.0">4-8 mm</quantity>
long, ±
<quantity id="135ADEDA05654712FA05F96D29FEF919" box="[1426,1487,1748,1767]" metricMagnitude="-3" metricUnit="m" metricValue="2.0" pageId="11" pageNumber="155" unit="mm" value="2.0">2 mm</quantity>
broad and thick, with 1 conspicuous tooth below the apex, tips pointed, epidermis smooth and with dark dots below surface. Flowers solitary, pink, to
<quantity id="135ADEDA05654712FC44F89E2829F8C5" box="[979,1048,1831,1851]" metricMagnitude="-2" metricUnit="m" metricValue="1.5" pageId="11" pageNumber="155" unit="mm" value="15.0">15 mm</quantity>
diam., almost sessile, pedicel to
<quantity id="135ADEDA05654712FAC6F89E29ABF8C5" box="[1361,1434,1831,1851]" metricMagnitude="-3" metricUnit="m" metricValue="5.5" pageId="11" pageNumber="155" unit="mm" value="5.5">5.5 mm</quantity>
long, calyx lobes 5, to
<quantity id="135ADEDA05654712FC42F8FA283FF8A9" box="[981,1038,1859,1879]" metricMagnitude="-3" metricUnit="m" metricValue="3.0" pageId="11" pageNumber="155" unit="mm" value="3.0">3 mm</quantity>
long, about equal length, 2 slightly succulent, petaloid staminodes in 2 rows, to 6.5 X
<quantity id="135ADEDA05654712FB3AF8E628C6F88D" box="[1197,1271,1887,1907]" metricMagnitude="-4" metricUnit="m" metricValue="7.0" pageId="11" pageNumber="155" unit="mm" value="0.7">0.7 mm</quantity>
, filamentous staminodes in 2 rows,
<quantity id="135ADEDA05654712FC2AF8C2286CF871" box="[957,1117,1915,1935]" metricMagnitude="-4" metricUnit="m" metricValue="5.0" pageId="11" pageNumber="155" unit="mm" value="0.5">3.5-4 X 0.5 mm</quantity>
, filamentous staminodes and stamens free to bases, of about equal length and collected into cone around center, with hair-like papillae in lower third, pollen yellow, stigmas 5, slender, yellow-green, ±
<quantity id="135ADEDA05624715FEEEFC5A2DF4FC08" box="[377,453,995,1014]" metricMagnitude="-3" metricUnit="m" metricValue="3.5" pageId="12" pageNumber="156" unit="mm" value="3.5">3.5 mm</quantity>
long, nectary a distinctly green crenulated ring. Capsule 5-locular, interior disintegrating so that only five pungent bundles on persistent fruit stalk remain and project above the plant, ±
<quantity id="135ADEDA05624715FEB3FB8F2D6EFBB4" box="[292,351,1078,1098]" metricMagnitude="-3" metricUnit="m" metricValue="6.0" pageId="12" pageNumber="156" unit="mm" value="6.0">6 mm</quantity>
diam., rims raised to ±
<quantity id="135ADEDA05624715FDC4FB8F2EBEFBB4" box="[595,655,1078,1098]" metricMagnitude="-3" metricUnit="m" metricValue="1.0" pageId="12" pageNumber="156" unit="mm" value="1.0">1 mm</quantity>
, lower part funnel-shaped, to
<quantity id="135ADEDA05624715FE84FBEB2D7AFB98" box="[275,331,1106,1126]" metricMagnitude="-3" metricUnit="m" metricValue="3.0" pageId="12" pageNumber="156" unit="mm" value="3.0">3 mm</quantity>
deep, covering membranes flexible, with distinct ledge below, keels slender, short, diverging and not touching at bases, valves opening into erect position, closing bodies hook-shaped, valve wings absent. Seeds ochre, ± 0.9 X
<quantity id="135ADEDA05624715FE6AFB1F2E46FB47" box="[509,631,1190,1209]" metricMagnitude="-4" metricUnit="m" metricValue="7.5" metricValueMax="8.0" metricValueMin="7.0" pageId="12" pageNumber="156" unit="mm" value="0.75" valueMax="0.8" valueMin="0.7">0.7-0.8 mm</quantity>
, somewhat D- shaped, almost smooth.
</paragraph>
</subSubSection>
<caption id="80DD23B705624715FFF3FC312F18FC53" ID-DOI="http://doi.org/10.5281/zenodo.8121030" ID-Zenodo-Dep="8121030" httpUri="https://zenodo.org/record/8121030/files/figure.png" pageId="12" pageNumber="156" startId="12.[100,125,904,918]" targetBox="[252,1332,152,874]" targetPageId="12">
<paragraph id="D41D733F05624715FFF3FC312F18FC53" blockId="12.[100,1488,903,941]" pageId="12" pageNumber="156">
Fig. 13. Habit of
<taxonomicName id="13A208BC05624715FF70FC3E2D55FC68" box="[231,356,903,918]" class="Magnoliopsida" family="Aizoaceae" genus="Ruschia" kingdom="Plantae" order="Caryophyllales" pageId="12" pageNumber="156" phylum="Tracheophyta" rank="species" species="indurata">Ruschia indurata</taxonomicName>
(A, B) and
<taxonomicName id="13A208BC05624715FE20FC3E2E22FC68" box="[439,531,903,918]" class="Magnoliopsida" family="Aizoaceae" genus="Ruschia" kingdom="Plantae" order="Caryophyllales" pageId="12" pageNumber="156" phylum="Tracheophyta" rank="species" species="pulvinaris">R. pulvinaris</taxonomicName>
(C, D).
<taxonomicName id="13A208BC05624715FDDDFC3E2EF9FC68" box="[586,712,903,918]" class="Magnoliopsida" family="Aizoaceae" genus="Ruschia" kingdom="Plantae" order="Caryophyllales" pageId="12" pageNumber="156" phylum="Tracheophyta" rank="species" species="indurata">Ruschia indurata</taxonomicName>
forms dense cushions only, occasionally with short side branches extending beyond the cushion (A), whereas old plants of
<taxonomicName id="13A208BC05624715FE9AFC272D58FC53" box="[269,361,926,941]" class="Magnoliopsida" family="Aizoaceae" genus="Ruschia" kingdom="Plantae" order="Caryophyllales" pageId="12" pageNumber="156" phylum="Tracheophyta" rank="species" species="pulvinaris">R. pulvinaris</taxonomicName>
may spread and form extensive, much laxer cushions (D).
</paragraph>
</caption>
<subSubSection id="9CB820B405624715FFF3FB402DE1FA9E" pageId="12" pageNumber="156" type="distribution">
<paragraph id="D41D733F05624715FFF3FB402DB5FAF3" blockId="12.[100,770,1273,1377]" box="[100,388,1273,1293]" pageId="12" pageNumber="156">3.2.1. Distribution and ecology</paragraph>
<paragraph id="D41D733F05624715FF13FAAD2DE1FA9E" blockId="12.[100,770,1273,1377]" pageId="12" pageNumber="156">
<taxonomicName id="13A208BC05624715FF13FAAD2D13FAD6" box="[132,290,1300,1320]" class="Magnoliopsida" family="Aizoaceae" genus="Ruschia" kingdom="Plantae" order="Caryophyllales" pageId="12" pageNumber="156" phylum="Tracheophyta" rank="species" species="indurata">Ruschia indurata</taxonomicName>
is restricted to pavements of calcrete near Beaufort West, in the Western Cape (
<figureCitation id="4C996FBA05624715FE37FA882DEEFABB" box="[416,479,1329,1349]" captionStart="Fig" captionStartId="13.[100,125,927,941]" captionTargetBox="[194,1395,153,896]" captionTargetId="figure-676@13.[186,1402,148,896]" captionTargetPageId="13" captionText="Fig. 14. Distribution of Ruschia indurata (square) and R. lawsonii (circle). Missing syntype collections of R. indurata, which are likely to refer to other species, are indicated: H.de Villiers sub NBG 266/16 from Steynsburg (triangle) and E.Pillans sub NBG 383/16 from Steytlerville (star)." figureDoi="http://doi.org/10.5281/zenodo.8121032" httpUri="https://zenodo.org/record/8121032/files/figure.png" pageId="12" pageNumber="156">Fig. 14</figureCitation>
), at around
<quantity id="135ADEDA05624715FDC0FA8B2EA5FABB" box="[599,660,1330,1349]" metricMagnitude="2" metricUnit="m" metricValue="9.0" pageId="12" pageNumber="156" unit="m" value="900.0">900 m</quantity>
a.s.l. Flowering is from November to December.
</paragraph>
</subSubSection>
<subSubSection id="9CB820B405624715FFF3FA3D2DCCF951" pageId="12" pageNumber="156" type="discussion">
<paragraph id="D41D733F05624715FFF3FA3D2E2AFA66" blockId="12.[100,771,1412,1711]" box="[100,539,1412,1432]" pageId="12" pageNumber="156">3.2.2. Distinguishing features and relationships</paragraph>
<paragraph id="D41D733F05624715FF13FA192DCCF951" blockId="12.[100,771,1412,1711]" pageId="12" pageNumber="156">
<taxonomicName id="13A208BC05624715FF13FA192D13FA4A" box="[132,290,1440,1460]" class="Magnoliopsida" family="Aizoaceae" genus="Ruschia" kingdom="Plantae" order="Caryophyllales" pageId="12" pageNumber="156" phylum="Tracheophyta" rank="species" species="indurata">Ruschia indurata</taxonomicName>
is a highly compact dwarf succulent which forms a dense cushion in which the internodes are not visible on the branches (
<figureCitation id="4C996FBA05624715FF47FA602D73FA12" box="[208,322,1497,1516]" captionStart="Fig" captionStartId="12.[100,125,904,918]" captionTargetBox="[252,1332,152,874]" captionTargetId="figure-683@12.[250,1338,148,874]" captionTargetPageId="12" captionText="Fig. 13. Habit of Ruschia indurata (A, B) and R.pulvinaris (C, D).Ruschia indurata forms dense cushions only, occasionally with short side branches extending beyond the cushion (A), whereas old plants of R.pulvinaris may spread and form extensive, much laxer cushions (D)." figureDoi="http://doi.org/10.5281/zenodo.8121030" httpUri="https://zenodo.org/record/8121030/files/figure.png" pageId="12" pageNumber="156">Fig. 13A, B</figureCitation>
). The leaves persist and are whitish grey.
<taxonomicName id="13A208BC05624715FFF3FA4D2D30F9F6" box="[100,257,1524,1544]" class="Magnoliopsida" family="Aizoaceae" genus="Ruschia" kingdom="Plantae" order="Caryophyllales" pageId="12" pageNumber="156" phylum="Tracheophyta" rank="species" species="indurata">Ruschia indurata</taxonomicName>
is related to
<taxonomicName id="13A208BC05624715FEEAFA4D2E29F9F6" authority="L. Bolus" authorityName="L. Bolus" box="[381,536,1524,1544]" class="Magnoliopsida" family="Aizoaceae" genus="Ruschia" kingdom="Plantae" order="Caryophyllales" pageId="12" pageNumber="156" phylum="Tracheophyta" rank="species" species="rigens">R. rigens L. Bolus</taxonomicName>
and
<taxonomicName id="13A208BC05624715FDD1FA4D2F30F9F6" authority="L. Bolus" authorityName="L. Bolus" box="[582,769,1524,1544]" class="Magnoliopsida" family="Aizoaceae" genus="Ruschia" kingdom="Plantae" order="Caryophyllales" pageId="12" pageNumber="156" phylum="Tracheophyta" rank="species" species="pulvinaris">R. pulvinaris L.Bolus</taxonomicName>
and all three species are characterized by triquetrous, sharply pointed leaves, with a conspicuous subapical tooth. In all three the flowers are solitary and the fruits soon fall out of their bases after ripening, leaving the firm stalk and five pungent bundles projecting above the plant in their places.
<taxonomicName id="13A208BC05624715FEA8F9C62DD1F96D" box="[319,480,1663,1683]" class="Magnoliopsida" family="Aizoaceae" genus="Ruschia" kingdom="Plantae" order="Caryophyllales" pageId="12" pageNumber="156" phylum="Tracheophyta" rank="species" species="indurata">Ruschia indurata</taxonomicName>
is the smallest in stature of these three species (see discussion above).
</paragraph>
</subSubSection>
<subSubSection id="9CB820B405624715FFF3F96A2E6CF8A8" pageId="12" pageNumber="156" type="conservation">
<paragraph id="D41D733F05624715FFF3F96A2D66F919" blockId="12.[100,770,1747,1879]" box="[100,343,1747,1767]" pageId="12" pageNumber="156">3.2.3. Conservation status</paragraph>
<paragraph id="D41D733F05624715FF13F9492E6CF8A8" blockId="12.[100,770,1747,1879]" pageId="12" pageNumber="156">
The area where
<taxonomicName id="13A208BC05624715FEA4F9562DE7F8FD" box="[307,470,1775,1795]" class="Magnoliopsida" family="Aizoaceae" genus="Ruschia" kingdom="Plantae" order="Caryophyllales" pageId="12" pageNumber="156" phylum="Tracheophyta" rank="species" species="indurata">Ruschia indurata</taxonomicName>
occurs is threatened by the extension of an additional Eskom Powerline. Due to the highly specialized habitat, the proximity to Beaufort West and subsequent urbanization, we recommend a status of threatened.
</paragraph>
</subSubSection>
<subSubSection id="9CB820B405624715FFF3F8C32EB3F838" pageId="12" pageNumber="156" type="materials_examined">
<paragraph id="D41D733F05624715FFF3F8C32DEAF870" blockId="12.[100,769,1914,1990]" box="[100,475,1914,1934]" pageId="12" pageNumber="156">3.2.4. Additional specimens investigated</paragraph>
<paragraph id="D41D733F05624715FF13F82E2EB3F838" blockId="12.[100,769,1914,1990]" pageId="12" pageNumber="156">
<materialsCitation id="64CA796205624715FF13F82E2E4FF838" collectingDate="2013-01-10" collectionCode="BOL" collectorName="Klak" country="South Africa" elevation="890" location="Farm Steenbokkies" municipality="Beaufort West" pageId="12" pageNumber="156" specimenCount="1" stateProvince="WESTERN CAPE">
<collectingCountry id="ACB533AF05624715FF13F82E2CCCF854" box="[132,253,1943,1962]" name="South Africa" pageId="12" pageNumber="156" value="South Africa">South Africa</collectingCountry>
.
<collectingRegion id="1666BDDD05624715FE93F82E2D93F854" box="[260,418,1943,1962]" country="South Africa" name="Western Cape" pageId="12" pageNumber="156">WESTERN CAPE</collectingRegion>
:
<collectingMunicipality id="3479E94505624715FE3DF82E2E0AF854" box="[426,571,1943,1962]" pageId="12" pageNumber="156">Beaufort West</collectingMunicipality>
(3222):
<location id="D17D25E405624715FD1BF8212C9FF838" LSID="urn:lsid:plazi:treatment:5C0BC22905674715FCA5F9222EB3F838:D17D25E405624715FD1BF8212C9FF838" country="South Africa" municipality="Beaufort West" name="Farm Steenbokkies" pageId="12" pageNumber="156" stateProvince="WESTERN CAPE">Farm Steenbokkies</location>
(-BC),
<date id="A01C55FF05624715FF78F80A2D57F838" box="[239,358,1971,1990]" pageId="12" pageNumber="156" value="2013-01-10">
<collectingDate id="B058AC1705624715FF78F80A2D57F838" box="[239,358,1971,1990]" pageId="12" pageNumber="156" value="2013-01-10">10 Jan. 2013</collectingDate>
</date>
,
<elevation id="5F8F940C05624715FEF8F80A2D9DF838" box="[367,428,1971,1990]" pageId="12" pageNumber="156">
<quantity id="135ADEDA05624715FEF8F80A2D9DF838" box="[367,428,1971,1990]" pageId="12" pageNumber="156" unit="m" value="890">890 m</quantity>
</elevation>
a.s.l.,
<collectorName id="795716E905624715FE73F80B2E3CF838" box="[484,525,1970,1990]" pageId="12" pageNumber="156">Klak</collectorName>
2171 (
<collectionCode id="B2B3EBFA05624715FDDBF80A2E49F838" box="[588,632,1971,1990]" collectionName="BOL" pageId="12" pageNumber="156">BOL</collectionCode>
)
</materialsCitation>
.
</paragraph>
</subSubSection>
</treatment>
</document>