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<mods:title id="19684E506D0E3DCA226E54E2F0B2693C">New nomenclatural and taxonomic adjustments in Dracaena (Asparagaceae)</mods:title>
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<emphasis id="DBECA909FF8EFFBAFF22EC22FE3EFD9F" bold="true" box="[177,421,554,581]" italics="true" pageId="3" pageNumber="296">Dracaena pinguicula</emphasis>
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[subsp.
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] fa.
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) Takawira-Nyenya &amp; Thiede
<emphasis id="DBECA909FF8EFFBAFD3AEC47FCEEFDB2" box="[681,885,590,617]" italics="true" pageId="3" pageNumber="296">comb. &amp; stat. nov.</emphasis>
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Basionym:—
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&amp;
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[
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28: fig. on p. 17, 2012)
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fa.
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(Pfennig ex
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<emphasis id="DBECA909FF8EFFBAFF33ED7AFEF6FC5D" box="[160,365,882,904]" italics="true" pageId="3" pageNumber="296">Dracaena pinguicula</emphasis>
subsp.
<emphasis id="DBECA909FF8EFFBAFE26ED7BFD9AFC5D" box="[437,513,882,903]" italics="true" pageId="3" pageNumber="296">disticha</emphasis>
(Pfennig ex
<bibRefCitation id="8D0908EAFF8EFFBAFDEEED7BFC8FFC52" author="Butler, A." box="[637,788,882,904]" pageId="3" pageNumber="296" pagination="17 - 18" refId="ref5204" refString="Butler, A. (2012) Sansevieria pinguicula ssp. disticha Pfennig ex Butler, a new subspecies from Kenya. Sansevieria 28: 17 - 18." type="journal article" year="2012">Butler 2012: 17</bibRefCitation>
)
<bibRefCitation id="8D0908EAFF8EFFBAFCB2ED7BFBC5FC52" author="Byng, J. W. &amp; Christenhusz, J. M. M." box="[801,1118,882,904]" pageId="3" pageNumber="296" pagination="64 - 67" refId="ref5266" refString="Byng, J. W. &amp; Christenhusz, J. M. M. (2018) Asparagaceae. In: Christenhusz, J. M. M., Fay, F. M. &amp; Byng, J. W. (Eds.) The Global Flora. A practical flora to vascular plant species of the world. Special Edition. GLOVAP Nomenclature 1, vol. 4. Plant Gateway Ltd., Bradford, pp. 64 - 67." type="book chapter" year="2018">Byng &amp; Christenhusz (2018: 66)</bibRefCitation>
</taxonomicName>
</treatmentCitation>
.
</treatmentCitationGroup>
</paragraph>
</subSubSection>
<subSubSection id="A1822690FF8EFFBAFF1BEDBFFE9BFACE" pageId="3" pageNumber="296" type="discussion">
<paragraph id="E927751BFF8EFFBAFF1BEDBFFC6DFB72" blockId="3.[136,1452,950,1301]" pageId="3" pageNumber="296">
<emphasis id="DBECA909FF8EFFBAFF1BEDBFFF5BFC0A" bold="true" box="[136,192,950,976]" pageId="3" pageNumber="296">Note</emphasis>
:—In the protologue (
<bibRefCitation id="8D0908EAFF8EFFBAFE2BEDBFFDDFFC0A" author="Butler, A." box="[440,580,950,976]" pageId="3" pageNumber="296" pagination="17 - 18" refId="ref5204" refString="Butler, A. (2012) Sansevieria pinguicula ssp. disticha Pfennig ex Butler, a new subspecies from Kenya. Sansevieria 28: 17 - 18." type="journal article" year="2012">Butler 2012</bibRefCitation>
), this taxon was published at the rank of subspecies and considered to differ from
<taxonomicName id="2E980E98FF8EFFBAFF55EDD2FDBDFC2E" authority="subsp. pinguicula" box="[198,550,986,1013]" class="Liliopsida" family="Asparagaceae" genus="Dracaena" kingdom="Plantae" order="Asparagales" pageId="3" pageNumber="296" phylum="Tracheophyta" rank="subSpecies" species="pinguicula" subSpecies="pinguicula">
<emphasis id="DBECA909FF8EFFBAFF55EDD2FEC1FC2E" box="[198,346,986,1013]" italics="true" pageId="3" pageNumber="296">S. pinguicula</emphasis>
subsp.
<emphasis id="DBECA909FF8EFFBAFE3DEDD3FDBDFC2E" box="[430,550,986,1012]" italics="true" pageId="3" pageNumber="296">pinguicula</emphasis>
</taxonomicName>
in its distichous leaves curving upwards and
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long (vs. leaves pointing in all directions, erect and
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long in
<taxonomicName id="2E980E98FF8EFFBAFD1AEDF6FC76FBC2" authority="subsp. pinguicula" box="[649,1005,1022,1049]" class="Liliopsida" family="Asparagaceae" genus="Dracaena" kingdom="Plantae" order="Asparagales" pageId="3" pageNumber="296" phylum="Tracheophyta" rank="subSpecies" species="pinguicula" subSpecies="pinguicula">
<emphasis id="DBECA909FF8EFFBAFD1AEDF6FC85FBC2" box="[649,798,1022,1049]" italics="true" pageId="3" pageNumber="296">S. pinguicula</emphasis>
subsp.
<emphasis id="DBECA909FF8EFFBAFCE6EDF7FC76FBC2" box="[885,1005,1022,1048]" italics="true" pageId="3" pageNumber="296">pinguicula</emphasis>
</taxonomicName>
). A re-evaluation by
<bibRefCitation id="8D0908EAFF8EFFBAFB4CEDF6FF48FBE7" author="Newton, L. E. &amp; Thiede, J." pageId="3" pageNumber="296" pagination="28 - 32" refId="ref6430" refString="Newton, L. E. &amp; Thiede, J. (2015) Rank adjustments for the infraspecific taxa of Sansevieria pinguicula P. R. O. Bally (Asparagaceae / Dracaenaceae). Cactus and Succulent Journal (Los Angeles) 87: 28 - 32. https: // doi. org / 10.2985 / 015.087.0105" type="journal article" year="2015">Newton &amp; Thiede (2015)</bibRefCitation>
showed that both taxa do not differ in leaf length and orientation, but solely in leaf arrangement (distichous vs. rosulate) and occur in mixed stands at the same locality east of
<collectingRegion id="2B5CBBF9FF8EFFBAFCF2EA4FFC23FBBA" box="[865,952,1094,1120]" country="Kenya" name="Garissa" pageId="3" pageNumber="296">Garissa</collectingRegion>
, therewith justifying its downranking to the rank of forma.
<bibRefCitation id="8D0908EAFF8EFFBAFEA3EA62FD04FB5F" author="Byng, J. W. &amp; Christenhusz, J. M. M." box="[304,671,1130,1157]" pageId="3" pageNumber="296" pagination="64 - 67" refId="ref5266" refString="Byng, J. W. &amp; Christenhusz, J. M. M. (2018) Asparagaceae. In: Christenhusz, J. M. M., Fay, F. M. &amp; Byng, J. W. (Eds.) The Global Flora. A practical flora to vascular plant species of the world. Special Edition. GLOVAP Nomenclature 1, vol. 4. Plant Gateway Ltd., Bradford, pp. 64 - 67." type="book chapter" year="2018">Byng &amp; Christenhusz (2018: 66)</bibRefCitation>
transferred this taxon at the subspecific rank as
<taxonomicName id="2E980E98FF8EFFBAFB2EEA62FEB4FB72" authorityName="Byng &amp; Christenhusz" authorityYear="2018" baseAuthorityName="Pfennig ex Butler" baseAuthorityYear="2012" class="Liliopsida" family="Asparagaceae" genus="Dracaena" kingdom="Plantae" order="Asparagales" pageId="3" pageNumber="296" phylum="Tracheophyta" rank="subSpecies" species="pinguicula" subSpecies="disticha">
<emphasis id="DBECA909FF8EFFBAFB2EEA62FA37FB5E" box="[1213,1452,1130,1156]" italics="true" pageId="3" pageNumber="296">Dracaena pinguicula</emphasis>
subsp.
<emphasis id="DBECA909FF8EFFBAFF45EA87FEB4FB72" box="[214,303,1166,1192]" italics="true" pageId="3" pageNumber="296">disticha</emphasis>
</taxonomicName>
, so that its downgrading to the rank of forma is published here.
</paragraph>
<paragraph id="E927751BFF8EFFBAFF2EEABBFE9BFACE" blockId="3.[136,1452,950,1301]" pageId="3" pageNumber="296">
<emphasis id="DBECA909FF8EFFBAFF2EEABBFED6FB16" bold="true" box="[189,333,1202,1228]" pageId="3" pageNumber="296">Typification</emphasis>
:—Since neither the
<typeStatus id="3623CBB9FF8EFFBAFDA3EABBFD09FB16" box="[560,658,1202,1228]" pageId="3" pageNumber="296" type="holotype">holotype</typeStatus>
nor the isotype is unambiguously showing the characterizing distichous leaf arrangement,
<bibRefCitation id="8D0908EAFF8EFFBAFEC7EADEFD07FB2A" author="Newton, L. E. &amp; Thiede, J." box="[340,668,1238,1265]" pageId="3" pageNumber="296" pagination="28 - 32" refId="ref6430" refString="Newton, L. E. &amp; Thiede, J. (2015) Rank adjustments for the infraspecific taxa of Sansevieria pinguicula P. R. O. Bally (Asparagaceae / Dracaenaceae). Cactus and Succulent Journal (Los Angeles) 87: 28 - 32. https: // doi. org / 10.2985 / 015.087.0105" type="journal article" year="2015">Newton &amp; Thiede (2015: 32)</bibRefCitation>
designated a photograph in the protologue showing distichous leaves as epitype.
</paragraph>
</subSubSection>
</treatment>
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