174 lines
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174 lines
18 KiB
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<document ID-DOI="http://dx.doi.org/10.3897/phytokeys.39.7624" ID-PMC="PMC4152891" ID-Pensoft-Pub="1314-2003-39-49" ID-Pensoft-UUID="0777C824BF1C8660EA7FA516AF3DB456" ID-PubMed="25197225" ID-Zenodo-Dep="576227" ModsDocID="1314-2003-39-49" checkinTime="1451251720275" checkinUser="pensoft" docAuthor="Robinson, Harold, Keeley, Sterling C., Skvarla, John J. & Chan, Raymund" docDate="2014" docId="147174A69F665920822630244876E3F6" docLanguage="en" docName="PhytoKeys 39: 49-64" docOrigin="PhytoKeys 39" docPubDate="2014-07-18" docSource="http://dx.doi.org/10.3897/phytokeys.39.7624" docTitle="Jeffreycia H. Rob., S. C. Keeley & Skvarla 2014, gen. nov." docType="treatment" docVersion="3" id="0777C824BF1C8660EA7FA516AF3DB456" lastPageNumber="60" masterDocId="0777C824BF1C8660EA7FA516AF3DB456" masterDocTitle="Two new genera, Hoffmannanthus and Jeffreycia, mostly from East Africa (Erlangeinae, Vernonieae, Asteraceae)" masterLastPageNumber="64" masterPageNumber="49" pageNumber="58" updateTime="1668141155960" 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>Two new genera, Hoffmannanthus and Jeffreycia, mostly from East Africa (Erlangeinae, Vernonieae, Asteraceae)</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>Robinson, Harold</mods:namePart>
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<mods:affiliation>Department of Botany, MRC 166, National Museum of Natural History, Smithsonian Institution, P. O. Box 37012, Washington, DC., 20013 - 7012, USA</mods:affiliation>
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<mods:nameIdentifier type="email">robinsoh@si.edu</mods:nameIdentifier>
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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>Keeley, Sterling C.</mods:namePart>
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<mods:affiliation>Department of Botany, University of Hawaii, Manoa, 3190 Maile aWay, # 101, Honolulu, Hawaii, 96822 - 2279, USA</mods:affiliation>
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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>Skvarla, John J.</mods:namePart>
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<mods:affiliation>Department of Botany and Microbiology, and Oklahoma Biological Survey, University of Oklahoma, Norman, Oklahoma, 73018 - 6131, USA, deceased 2 March 2014</mods:affiliation>
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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>Chan, Raymund</mods:namePart>
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<mods:affiliation>Department of Botany, MRC 166, National Museum of Natural History, Smithsonian Institution, P. O. Box 37012, Washington, DC., 20013 - 7012, USA</mods:affiliation>
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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>2014</mods:date>
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<mods:detail type="pubDate">
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<mods:number>2014-07-18</mods:number>
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</mods:detail>
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<mods:detail type="volume">
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<mods:number>39</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>49</mods:start>
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<mods:end>64</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.39.7624</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.39.7624</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1314-2003-39-49</mods:identifier>
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<mods:identifier type="Pensoft-UUID">0777C824BF1C8660EA7FA516AF3DB456</mods:identifier>
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<mods:identifier type="Zenodo-Dep">576227</mods:identifier>
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</mods:mods>
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<treatment ID-GBIF-Taxon="182228551" LSID="urn:lsid:plazi:treatment:147174A69F665920822630244876E3F6" httpUri="http://treatment.plazi.org/id/147174A69F665920822630244876E3F6" lastPageId="11" lastPageNumber="60" pageId="9" pageNumber="58">
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<subSubSection pageId="9" pageNumber="58" type="nomenclature">
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<paragraph pageId="9" pageNumber="58">
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<taxonomicName LSID="147174A6-9F66-5920-8226-30244876E3F6" authority="H. Rob., S. C. Keeley & Skvarla" authorityName="H. Rob., S. C. Keeley & Skvarla" authorityYear="2014" class="Magnoliopsida" family="Asteraceae" genus="Jeffreycia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Jeffreycia" order="Asterales" pageId="9" pageNumber="58" phylum="Tracheophyta" rank="genus" status="gen. nov.">Jeffreycia H. Rob., S.C. Keeley & Skvarla</taxonomicName>
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<taxonomicNameLabel pageId="9" pageNumber="58">gen. nov.</taxonomicNameLabel>
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</paragraph>
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</subSubSection>
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<subSubSection lastPageId="11" lastPageNumber="60" pageId="9" pageNumber="58" type="type">
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<paragraph pageId="9" pageNumber="58">Type.</paragraph>
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<paragraph pageId="9" pageNumber="58">
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<taxonomicName authorityName="Robinson & Keeley & Skvarla & Chan" authorityYear="2014" baseAuthorityName="Robinson & Keeley & Skvarla & Chan" baseAuthorityYear="2014" class="Magnoliopsida" family="Asteraceae" genus="Vernonia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="" order="Asterales" pageId="9" pageNumber="58" phylum="Tracheophyta" rank="species" species="zanzibarensis">
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<emphasis italics="true" pageId="9" pageNumber="58">Vernonia zanzibarensis</emphasis>
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</taxonomicName>
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Less.
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</paragraph>
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<paragraph lastPageId="11" lastPageNumber="60" pageId="9" pageNumber="58">
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Small to moderate-sized; branching, often scrambling shrubs; stems woody, with narrow solid pith; hairs simple, without cap-cells, sometimes forming loose tomentum. Leaves alternate; petioles distinct, short to elongate; blades ovate to elliptic or panduriform usually with basal auricles, abruptly delimited from petiole at the base, 2.5 to ca. 11 cm long, ca. 1.5-7.5 cm wide, margins crenate or serrate, apices acute to scarcely acuminate, rarely obtuse, upper surface sparsely pilosulous to hispidulous, lower surface sparsely pilosulous to tomentellous, with many glandular dots; secondary veins 4-6 on each side, with unusual somewhat meandering course, spreading at 45-60° angles. Inflorescences terminal, with branches alternate and usually ascending at 30° angles or less, usually with minute bracteoles, sometimes primary bracteoles larger and foliiform; heads crowded at ends of longer branches, with distinct short peduncles; involucral bracts persistent, subimbricate in ca. 4-5 series or with differentiated long, linear-lanceolate basal bracts, bracts, except at base, smooth outside, without median keel; receptacle scarcely convex, epaleate, epilose, with proturberant scars; florets 5-40 in a head; corollas purplish, 5-11 mm long, with some glandular dots outside, few or no hairs below tips, basal tube slender, half as long as the
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<pageBreakToken pageId="10" pageNumber="59" start="start">corolla</pageBreakToken>
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, throat half as long as the limb, ca. as long as the lobes, lobes strictly narrowly lanceolate, with sides straight from base to apex, erect, not recurving, sometimes with stiff hairs at tip; anther thecae without glands, calcarate at base, with narrow tails; endothecial cells with
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<pageBreakToken pageId="11" pageNumber="60" start="start">out</pageBreakToken>
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obvious nodes; apical appendages narrowly lanceolate; style with basal node; sweeping hairs with blunt tips, restricted to branches, often lacking for some distance above bases of branches. Achenes 2-4 mm long, with 4 or 5 poorly differentiated angles, with or without glands or setulae, with scattered idioblasts on surface sometimes in vertical series, inner cells of achene wall with distinct firm cell walls, containing small subquadrate raphids; carpopodium stopper-shaped or somewhat turbinate and asymmetrical, with many series of subquadrate, thick-walled cells; pappus white, with inner series capillary, often deciduous, 4.5-7.0 mm long, gradually narrowed to tips, somewhat flattened on outer surface; outer series of short persistent scales, minute to 0.5 mm long. Pollen ca. 40
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<normalizedToken originalValue="µm">µm</normalizedToken>
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in diam. in fluid, sublophate, tricolporate, with perforated tectum continuous between colpi.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="11" pageNumber="60" type="etymology">
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<paragraph pageId="11" pageNumber="60">Etymology.</paragraph>
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<paragraph pageId="11" pageNumber="60">
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The new genus,
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<taxonomicName authorityName="H. Rob., S. C. Keeley & Skvarla" authorityYear="2014" class="Magnoliopsida" family="Asteraceae" genus="Jeffreycia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="" order="Asterales" pageId="11" pageNumber="60" phylum="Tracheophyta" rank="genus">
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<emphasis italics="true" pageId="11" pageNumber="60">Jeffreycia</emphasis>
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</taxonomicName>
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, honors the author of the study of the
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<taxonomicName class="Magnoliopsida" family="Asteraceae" genus="Vernonieae" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Asterales" pageId="11" pageNumber="60" phylum="Tracheophyta" rank="genus">Vernonieae</taxonomicName>
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of East Tropical Africa (
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<bibRefCitation author="Jeffrey, C" journalOrPublisher="Kew Bulletin" pageId="14" pageNumber="63" pagination="195 - 277" publicationUrl="10.2307/4113734" refId="B10" refString="Jeffrey, C, 1988. The Vernonieae in East Tropical Africa (Notes on Compositae V). Kew Bulletin 43 (2): 195 - 277, DOI: 10.2307/4113734" title="The Vernonieae in East Tropical Africa (Notes on Compositae V)." url="10.2307/4113734" volume="43" year="1988">Jeffrey 1988</bibRefCitation>
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) whose work has been one of the most helpful in resolving the tribe in Africa.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="11" pageNumber="60" type="number of species">
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<paragraph pageId="11" pageNumber="60">Number of species.</paragraph>
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<paragraph pageId="11" pageNumber="60">Five species are currently placed in the genus.</paragraph>
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<paragraph pageId="11" pageNumber="60">
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In addition to the species listed below,
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<bibRefCitation author="Jeffrey, C" journalOrPublisher="Kew Bulletin" pageId="14" pageNumber="63" pagination="195 - 277" publicationUrl="10.2307/4113734" refId="B10" refString="Jeffrey, C, 1988. The Vernonieae in East Tropical Africa (Notes on Compositae V). Kew Bulletin 43 (2): 195 - 277, DOI: 10.2307/4113734" title="The Vernonieae in East Tropical Africa (Notes on Compositae V)." url="10.2307/4113734" volume="43" year="1988">Jeffrey (1988)</bibRefCitation>
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included another three species in his aggregate,
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<taxonomicName authorityName="C. Jeffrey" authorityYear="1988" class="Magnoliopsida" family="Asteraceae" genus="Vernonia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="" order="Asterales" pageId="11" pageNumber="60" phylum="Tracheophyta" rank="species" species="bruceae">
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<emphasis italics="true" pageId="11" pageNumber="60">Vernonia bruceae</emphasis>
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</taxonomicName>
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C. Jeffrey,
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<taxonomicName class="Magnoliopsida" family="Asteraceae" genus="Vernonia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="" order="Asterales" pageId="11" pageNumber="60" phylum="Tracheophyta" rank="species" species="stuhlmanii">
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<emphasis italics="true" pageId="11" pageNumber="60">Vernonia stuhlmanii</emphasis>
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</taxonomicName>
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O. Hoffm., and
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<taxonomicName authorityName="O. Hoffm" authorityYear="1894" class="Magnoliopsida" family="Asteraceae" genus="Vernonia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="" order="Asterales" pageId="11" pageNumber="60" phylum="Tracheophyta" rank="species" species="fischeri">
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<emphasis italics="true" pageId="11" pageNumber="60">Vernonia fischeri</emphasis>
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</taxonomicName>
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O. Hoffm., but these have not been seen in this study and therefore are not included in the new genus. Of these,
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<taxonomicName authorityName="O. Hoffm" authorityYear="1894" class="Magnoliopsida" family="Asteraceae" genus="Vernonia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="" order="Asterales" pageId="11" pageNumber="60" phylum="Tracheophyta" rank="species" species="fischeri">
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<emphasis italics="true" pageId="11" pageNumber="60">Vernonia fischeri</emphasis>
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</taxonomicName>
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O. Hoffm. (1895) and
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<taxonomicName class="Magnoliopsida" family="Asteraceae" genus="Vernonia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="" order="Asterales" pageId="11" pageNumber="60" phylum="Tracheophyta" rank="species" species="stuhlmannii">
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<emphasis italics="true" pageId="11" pageNumber="60">Vernonia stuhlmannii</emphasis>
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</taxonomicName>
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O. Hoffm. (1898) are described with leaf bases truncate to subcordate, and both species are probably members of
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<taxonomicName authorityName="H. Rob., S. C. Keeley & Skvarla" authorityYear="2014" class="Magnoliopsida" family="Asteraceae" genus="Jeffreycia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="" order="Asterales" pageId="11" pageNumber="60" phylum="Tracheophyta" rank="genus">
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<emphasis italics="true" pageId="11" pageNumber="60">Jeffreycia</emphasis>
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</taxonomicName>
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, distinguished from the others by the appendages on the tips of their involucral bracts. However,
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<taxonomicName class="Magnoliopsida" family="Asteraceae" genus="Vernonia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="" order="Asterales" pageId="11" pageNumber="60" phylum="Tracheophyta" rank="species" species="brucaea">
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<emphasis italics="true" pageId="11" pageNumber="60">Vernonia brucaea</emphasis>
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</taxonomicName>
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is described with "foliis ellipticis vel lanceolatis basi late cuneatis vel rotundatis". Not stated is whether that leaf base is as abrupt at the insertion on the petiole as in all the species of
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<taxonomicName authorityName="H. Rob., S. C. Keeley & Skvarla" authorityYear="2014" class="Magnoliopsida" family="Asteraceae" genus="Jeffreycia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="" order="Asterales" pageId="11" pageNumber="60" phylum="Tracheophyta" rank="genus">
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<emphasis italics="true" pageId="11" pageNumber="60">Jeffreycia</emphasis>
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</taxonomicName>
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recognized here, and any close relationship to
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<taxonomicName authorityName="H. Rob., S. C. Keeley & Skvarla" authorityYear="2014" class="Magnoliopsida" family="Asteraceae" genus="Jeffreycia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="" order="Asterales" pageId="11" pageNumber="60" phylum="Tracheophyta" rank="genus">
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<emphasis italics="true" pageId="11" pageNumber="60">Jeffreycia</emphasis>
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</taxonomicName>
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is doubtful.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="11" pageNumber="60" type="notes on morphology">
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<paragraph pageId="11" pageNumber="60">Notes on morphology.</paragraph>
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<paragraph pageId="11" pageNumber="60">
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Regarding the shape of the leaf base, while it is similar to cordate,
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<bibRefCitation author="Jeffrey, C" journalOrPublisher="Kew Bulletin" pageId="14" pageNumber="63" pagination="195 - 277" publicationUrl="10.2307/4113734" refId="B10" refString="Jeffrey, C, 1988. The Vernonieae in East Tropical Africa (Notes on Compositae V). Kew Bulletin 43 (2): 195 - 277, DOI: 10.2307/4113734" title="The Vernonieae in East Tropical Africa (Notes on Compositae V)." url="10.2307/4113734" volume="43" year="1988">Jeffrey (1988)</bibRefCitation>
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refers to it as panduriform. The auricles result mostly from a constriction above the base of the leaf blade. This character is lacking only in those specimens of
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<taxonomicName authorityName="Robinson & Keeley & Skvarla & Chan" authorityYear="2014" baseAuthorityName="Robinson & Keeley & Skvarla & Chan" baseAuthorityYear="2014" class="Magnoliopsida" family="Asteraceae" genus="Vernonia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="" order="Asterales" pageId="11" pageNumber="60" phylum="Tracheophyta" rank="species" species="zanzibarensis">
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<emphasis italics="true" pageId="11" pageNumber="60">Vernonia zanzibarensis</emphasis>
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</taxonomicName>
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Less. that have longer petioles. Some specimens combine long hairs at the apices of the corolla lobes as in
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<taxonomicName authorityName="Robinson & Keeley & Skvarla & Chan" authorityYear="2014" baseAuthorityName="Robinson & Keeley & Skvarla & Chan" baseAuthorityYear="2014" class="Magnoliopsida" family="Asteraceae" genus="Vernonia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="" order="Asterales" pageId="11" pageNumber="60" phylum="Tracheophyta" rank="species" species="zanzibarensis">
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<emphasis italics="true" pageId="11" pageNumber="60">Vernonia zanzibarensis</emphasis>
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</taxonomicName>
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with panduriform bases on short-petiolate leaves, and it is apparently plants like these that have been interpreted by
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<bibRefCitation author="Jeffrey, C" journalOrPublisher="Kew Bulletin" pageId="14" pageNumber="63" pagination="195 - 277" publicationUrl="10.2307/4113734" refId="B10" refString="Jeffrey, C, 1988. The Vernonieae in East Tropical Africa (Notes on Compositae V). Kew Bulletin 43 (2): 195 - 277, DOI: 10.2307/4113734" title="The Vernonieae in East Tropical Africa (Notes on Compositae V)." url="10.2307/4113734" volume="43" year="1988">Jeffrey (1988)</bibRefCitation>
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as hybrids between that species and
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<taxonomicName authorityName="Robinson & Keeley & Skvarla & Chan" authorityYear="2014" baseAuthorityName="Robinson & Keeley & Skvarla & Chan" baseAuthorityYear="2014" class="Magnoliopsida" family="Asteraceae" genus="Vernonia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="" order="Asterales" pageId="11" pageNumber="60" phylum="Tracheophyta" rank="species" species="hildebrandtii">
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<emphasis italics="true" pageId="11" pageNumber="60">Vernonia hildebrandtii</emphasis>
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</taxonomicName>
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Vatke. However, it is possible that such leaf blades are just a variant of
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<taxonomicName authorityName="Robinson & Keeley & Skvarla & Chan" authorityYear="2014" baseAuthorityName="Robinson & Keeley & Skvarla & Chan" baseAuthorityYear="2014" class="Magnoliopsida" family="Asteraceae" genus="Vernonia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="" order="Asterales" pageId="11" pageNumber="60" phylum="Tracheophyta" rank="species" species="zanzibarensis">
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<emphasis italics="true" pageId="11" pageNumber="60">Vernonia zanzibarensis</emphasis>
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</taxonomicName>
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that has reverted to or retained the leaf form that is characteristic of all the other members of the genus.
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</paragraph>
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</subSubSection>
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</treatment>
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</document> |