163 lines
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163 lines
12 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/phytokeys.142.48365" ID-GBIF-Dataset="447d0c45-35c7-4aaa-b3b3-acbf7069da06" ID-PMC="PMC7082394" ID-Pensoft-Pub="1314-2003-142-1" ID-Pensoft-UUID="7B3A5CC9B82952B6B3E20C46E12DB4F1" ID-PubMed="32210671" ModsDocID="1314-2003-142-1" checkinTime="1584104974826" checkinUser="pensoft" docAuthor="Klopper, Ronell R., Crouch, Neil R., Smith, Gideon F. & van Wyk, Abraham E." docDate="2020" docId="FD6FD78B0EE95E4D9839EE89FA3AC92C" docLanguage="en" docName="PhytoKeys 142: 1-88" docOrigin="PhytoKeys 142" docSource="http://dx.doi.org/10.3897/phytokeys.142.48365" docTitle="Aloe gerstneri Reynolds 1937" docType="treatment" docVersion="4" id="7B3A5CC9B82952B6B3E20C46E12DB4F1" lastPageNumber="1" masterDocId="7B3A5CC9B82952B6B3E20C46E12DB4F1" masterDocTitle="A synoptic review of the aloes (Asphodelaceae, Alooideae) of KwaZulu-Natal, an ecologically diverse province in eastern South Africa" masterLastPageNumber="88" masterPageNumber="1" pageNumber="1" updateTime="1668139702755" updateUser="ExternalLinkService">
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<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:titleInfo>
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<mods:title>A synoptic review of the aloes (Asphodelaceae, Alooideae) of KwaZulu-Natal, an ecologically diverse province in eastern South Africa</mods:title>
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</mods:titleInfo>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Klopper, Ronell R.</mods:namePart>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Crouch, Neil R.</mods:namePart>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Smith, Gideon F.</mods:namePart>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>van Wyk, Abraham E.</mods:namePart>
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</mods:name>
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<mods:typeOfResource>text</mods:typeOfResource>
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<mods:relatedItem type="host">
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<mods:titleInfo>
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<mods:title>PhytoKeys</mods:title>
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</mods:titleInfo>
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<mods:part>
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<mods:date>2020</mods:date>
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<mods:detail type="volume">
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<mods:number>142</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>1</mods:start>
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<mods:end>88</mods:end>
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</mods:extent>
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</mods:part>
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</mods:relatedItem>
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<mods:location>
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<mods:url>http://dx.doi.org/10.3897/phytokeys.142.48365</mods:url>
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</mods:location>
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<mods:classification>journal article</mods:classification>
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<mods:identifier type="DOI">http://dx.doi.org/10.3897/phytokeys.142.48365</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1314-2003-142-1</mods:identifier>
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<mods:identifier type="Pensoft-UUID">7B3A5CC9B82952B6B3E20C46E12DB4F1</mods:identifier>
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</mods:mods>
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<treatment ID-GBIF-Taxon="162486998" LSID="urn:lsid:plazi:treatment:FD6FD78B0EE95E4D9839EE89FA3AC92C" httpUri="http://treatment.plazi.org/id/FD6FD78B0EE95E4D9839EE89FA3AC92C" lastPageNumber="1" pageId="0" pageNumber="1">
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<subSubSection pageId="0" pageNumber="1" type="nomenclature">
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<paragraph pageId="0" pageNumber="1">
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E
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<taxonomicName LSID="FD6FD78B-0EE9-5E4D-9839-EE89FA3AC92C" authority="Reynolds" authorityName="Reynolds" authorityYear="1937" class="Liliopsida" family="Asphodelaceae" genus="Aloe" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Aloe gerstneri" order="Asparagales" pageId="0" pageNumber="1" phylum="Tracheophyta" rank="species" species="gerstneri">Aloe gerstneri Reynolds</taxonomicName>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="1" type="common names">
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<paragraph pageId="0" pageNumber="1">Common names.</paragraph>
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<paragraph pageId="0" pageNumber="1">
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<normalizedToken originalValue="Gerstner’s">Gerstner's</normalizedToken>
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aloe (English); bergaalwyn (Afrikaans); isihlabane (Zulu).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="1" type="description">
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<paragraph pageId="0" pageNumber="1">Description.</paragraph>
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<paragraph pageId="0" pageNumber="1">
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Acaulescent plants or
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<emphasis bold="true" italics="true" pageId="0" pageNumber="1">stem</emphasis>
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short; rosettes solitary, erect, 0.4-0.7 m high.
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<emphasis bold="true" italics="true" pageId="0" pageNumber="1">Leaves</emphasis>
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densely rosulate, arcuate-erect, dull grey-green, without spots, texture smooth, lanceolate-ensiform, 40-60 cm long, 6-12 cm wide at base, lower surface sometimes with few spines in median line near apex (can be copiously spiny on both surfaces in young plants); margin not distinctly coloured, with isolated, pungent, deltoid, pale brown teeth from white sub-tuberculate base, 4 mm long, 10-15 mm apart; exudate honey-coloured.
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<emphasis bold="true" italics="true" pageId="0" pageNumber="1">Inflorescence</emphasis>
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1.0-1.3 m high, erect, simple in young plants, 1- to 3-branched from below middle in mature plants.
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<emphasis bold="true" italics="true" pageId="0" pageNumber="1">Racemes</emphasis>
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cylindrical, slightly acuminate, up to 36 cm long, 6-7 cm wide, very dense; buds and flowers pendent.
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<emphasis bold="true" italics="true" pageId="0" pageNumber="1">Floral bracts</emphasis>
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18 mm long, 5 mm wide.
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<emphasis bold="true" italics="true" pageId="0" pageNumber="1">Pedicels</emphasis>
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5 mm long.
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<emphasis bold="true" italics="true" pageId="0" pageNumber="1">Flowers</emphasis>
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:
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<emphasis italics="true" pageId="0" pageNumber="1">perianth</emphasis>
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reddish-orange in bud, flowers yellowish-orange, 24-30 mm long,
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<normalizedToken originalValue="±">+/-</normalizedToken>
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7 mm across ovary, narrowing slightly towards mouth, cylindrical-ventricose, slightly clavate, mouth slightly upturned; outer segments free for 15-17 mm;
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<emphasis italics="true" pageId="0" pageNumber="1">stamens</emphasis>
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exserted to 13 mm;
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<emphasis italics="true" pageId="0" pageNumber="1">style</emphasis>
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exserted to 14 mm.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="1" type="flowering time">
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<paragraph pageId="0" pageNumber="1">Flowering time.</paragraph>
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<paragraph pageId="0" pageNumber="1">February-March.</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="1" type="habitat">
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<paragraph pageId="0" pageNumber="1">Habitat.</paragraph>
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<paragraph pageId="0" pageNumber="1">Rocky slopes in grassland in areas with cold winters and reasonably high rainfall, on granite or quartzite formations.</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="1" type="description">
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<paragraph pageId="0" pageNumber="1">Diagnostic characters.</paragraph>
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<paragraph pageId="0" pageNumber="1">
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<taxonomicName authorityName="Reynolds" authorityYear="1937" class="Liliopsida" family="Asphodelaceae" genus="Aloe" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Aloe gerstneri" order="Asparagales" pageId="0" pageNumber="1" phylum="Tracheophyta" rank="species" species="gerstneri">
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<emphasis italics="true" pageId="0" pageNumber="1">Aloe gerstneri</emphasis>
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</taxonomicName>
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can be distinguished from other virtually acaulescent, non-maculate aloes in KwaZulu-Natal (
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<taxonomicName class="Liliopsida" family="Asphodelaceae" genus="Aristaloe" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Aristaloe aristata" order="Asparagales" pageId="0" pageNumber="1" phylum="Tracheophyta" rank="species" species="aristata">
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<emphasis italics="true" pageId="0" pageNumber="1">Aristaloe aristata</emphasis>
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</taxonomicName>
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,
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<taxonomicName authority="var. chabaudii" class="Liliopsida" family="Asphodelaceae" genus="Aloe" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Aloe chabaudii subsp. var. var. chabaudii" order="Asparagales" pageId="0" pageNumber="1" phylum="Tracheophyta" rank="variety" species="chabaudii" subSpecies="var." variety="chabaudii">Aloe chabaudii var. chabaudii</taxonomicName>
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,
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<taxonomicName authorityName="Baker" authorityYear="1880" class="Liliopsida" family="Asphodelaceae" genus="Aloe" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Aloe pratensis" order="Asparagales" pageId="0" pageNumber="1" phylum="Tracheophyta" rank="species" species="pratensis">
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<emphasis italics="true" pageId="0" pageNumber="1">Aloe pratensis</emphasis>
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</taxonomicName>
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,
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<taxonomicName class="Liliopsida" family="Asphodelaceae" genus="Aloe" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Aloe reitzii subsp. var. var. vernalis" order="Asparagales" pageId="0" pageNumber="1" phylum="Tracheophyta" rank="variety" species="reitzii" subSpecies="var." variety="vernalis">Aloe reitzii var. vernalis</taxonomicName>
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,
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<taxonomicName class="Liliopsida" family="Asphodelaceae" genus="Aloe" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Aloe suprafoliata" order="Asparagales" pageId="0" pageNumber="1" phylum="Tracheophyta" rank="species" species="suprafoliata">
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<emphasis italics="true" pageId="0" pageNumber="1">Aloe suprafoliata</emphasis>
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</taxonomicName>
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and
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<taxonomicName authorityName="Pillans" authorityYear="1934" class="Liliopsida" family="Asphodelaceae" genus="Aloe" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Aloe vanbalenii" order="Asparagales" pageId="0" pageNumber="1" phylum="Tracheophyta" rank="species" species="vanbalenii">
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<emphasis italics="true" pageId="0" pageNumber="1">Aloe vanbalenii</emphasis>
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</taxonomicName>
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) by the very dense racemes (up to 36
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<normalizedToken originalValue="×">x</normalizedToken>
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6-7 cm) with short erect pedicels (5 mm). Flowers are yellowish-orange, 24-30 mm long, tubular and straight, pointing downwards and almost pressed against the stalk, with conspicuously exserted stamens and style. Leaves can be copiously spiny on both surfaces in young plants, but mature leaves (40-60
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<normalizedToken originalValue="×">x</normalizedToken>
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6-12 cm) are without surface prickles (sometimes with spines on median line of lower surface), arcuate erect, dull grey-green and with pungent marginal teeth on a distinctive white base.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="1" type="conservation status">
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<paragraph pageId="0" pageNumber="1">Conservation status.</paragraph>
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<paragraph pageId="0" pageNumber="1">
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Endangered. Threats include habitat degradation owing to erosion caused by overgrazing and subsistence farming (
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<bibRefCitation author="Raimondo, D" journalOrPublisher="South African National Biodiversity Institute, Pretoria" pageId="0" pageNumber="1" refId="B37" refString="Raimondo, D, Von Staden, L, Foden, W, Victor, JE, Helme, NA, Turner, RC, Kamundi, DA, Manyama, PA, 2009. Red List of South African Plants. Strelitzia 25. South African National Biodiversity Institute, Pretoria." title="Red List of South African Plants. Strelitzia 25. South African National Biodiversity Institute, Pretoria." year="2009">Raimondo et al. 2009</bibRefCitation>
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, L. von Staden pers. comm.).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="1" type="distribution">
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<paragraph pageId="0" pageNumber="1">Distribution.</paragraph>
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<paragraph pageId="0" pageNumber="1">
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Restricted to a small area in northern KwaZulu-Natal, South Africa (Fig.
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<figureCitation captionStart="Figure 15" captionStartId="F15" captionText="Figure 15. Aloe gerstneri. Photo: E. van Wyk." figureDoi="10.3897/phytokeys.142.48365.figure15" httpUri="https://binary.pensoft.net/fig/388241" pageId="0" pageNumber="1">15</figureCitation>
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).
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</paragraph>
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<caption doi="10.3897/phytokeys.142.48365.figure15" httpUri="https://binary.pensoft.net/fig/388241" pageId="0" pageNumber="1" start="Figure 15" startId="F15">
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<paragraph pageId="0" pageNumber="1">
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<emphasis bold="true" pageId="0" pageNumber="1">Figure 15.</emphasis>
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<taxonomicName authorityName="Reynolds" authorityYear="1937" class="Liliopsida" family="Asphodelaceae" genus="Aloe" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Aloe gerstneri" order="Asparagales" pageId="0" pageNumber="1" phylum="Tracheophyta" rank="species" species="gerstneri">
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<emphasis italics="true" pageId="0" pageNumber="1">Aloe gerstneri</emphasis>
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</taxonomicName>
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. Photo: E. van Wyk.
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</paragraph>
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</caption>
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</subSubSection>
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</treatment>
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</document> |