469 lines
37 KiB
XML
469 lines
37 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/phytokeys.225.99660" ID-Pensoft-Pub="1314-2003-225-41" ID-Pensoft-UUID="33F829586223506B84115400AD58FAA8" ModsDocID="1314-2003-225-41" checkinTime="1682026965757" checkinUser="pensoft" docAuthor="Zhang, Ren-Bo, Deng, Tan, Li, Nan & Wen, Fang" docDate="2023" docId="EB4C6CCE5C83552CAC64C1479E89166A" docLanguage="en" docName="PhytoKeys 225: 41-51" docOrigin="PhytoKeys 225" docPubDate="2023-04-19" docSource="http://dx.doi.org/10.3897/phytokeys.225.99660" docTitle="Petrocodon wui F. Wen & R. B. Zhang 2023, sp. nov." docType="treatment" docVersion="2" id="33F829586223506B84115400AD58FAA8" lastPageNumber="41" masterDocId="33F829586223506B84115400AD58FAA8" masterDocTitle="Petrocodon wui (Gesneriaceae), a new species from Guizhou, China" masterLastPageNumber="51" masterPageNumber="41" pageNumber="41" updateTime="1682027266399" 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>Petrocodon wui (Gesneriaceae), a new species from Guizhou, China</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>Zhang, Ren-Bo</mods:namePart>
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<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0002-9860-5803</mods:nameIdentifier>
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<mods:affiliation>Department of Biology, Zunyi Normal College, Zunyi, CN- 563000 Guizhou, China</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>Deng, Tan</mods:namePart>
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<mods:affiliation>Department of Biology, Zunyi Normal College, Zunyi, CN- 563000 Guizhou, China</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>Li, Nan</mods:namePart>
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<mods:affiliation>Department of Biology, Zunyi Normal College, Zunyi, CN- 563000 Guizhou, China</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>Wen, Fang</mods:namePart>
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<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0002-3889-8835</mods:nameIdentifier>
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<mods:affiliation>Guangxi Key Laboratory of Plant Conservation and Restoration Ecology in Karst Terrain, Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, CN- 541006 Guilin, Guangxi, China & Gesneriad Committee of China Wild Plant Conservation Association (GC), National Gesneriaceae Germplasm Resources Bank of GXIB (NGGRB), Gesneriad Conservation Center of China (GCCC), CN- 541006 Guilin, Guangxi, China</mods:affiliation>
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<mods:nameIdentifier type="email">wenfang760608@139.com</mods:nameIdentifier>
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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>2023</mods:date>
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<mods:detail type="pubDate">
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<mods:number>2023-04-19</mods:number>
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</mods:detail>
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<mods:detail type="volume">
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<mods:number>225</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>41</mods:start>
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<mods:end>51</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.225.99660</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.225.99660</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1314-2003-225-41</mods:identifier>
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<mods:identifier type="Pensoft-UUID">33F829586223506B84115400AD58FAA8</mods:identifier>
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</mods:mods>
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<treatment LSID="urn:lsid:plazi:treatment:EB4C6CCE5C83552CAC64C1479E89166A" httpUri="http://treatment.plazi.org/id/EB4C6CCE5C83552CAC64C1479E89166A" lastPageNumber="41" pageId="0" pageNumber="41">
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<subSubSection pageId="0" pageNumber="41" type="nomenclature">
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<paragraph pageId="0" pageNumber="41">
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<taxonomicName LSID="EB4C6CCE-5C83-552C-AC64-C1479E89166A" authority="F. Wen & R. B. Zhang" authorityName="F. Wen & R. B. Zhang" authorityYear="2023" class="Magnoliopsida" family="Gesneriaceae" genus="Petrocodon" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Petrocodon wui" order="Lamiales" pageId="0" pageNumber="41" phylum="Tracheophyta" rank="species" species="wui" status="sp. nov.">Petrocodon wui F.Wen & R.B.Zhang</taxonomicName>
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<taxonomicNameLabel pageId="0" pageNumber="41">sp. nov.</taxonomicNameLabel>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="41" type="description">
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<paragraph pageId="0" pageNumber="41">
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<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Petrocodon wui F. Wen & R. B. Zhang, sp. nov. A habit B bracts, showing the abaxial surface C bracteoles D abaxial surfaces of calyx lobe E top view of flower F opened corolla from the dried flower G one of stamens H pistil I seed. Drawings by Tan Deng from the type specimen." figureDoi="10.3897/phytokeys.225.99660.figure1" httpUri="https://binary.pensoft.net/fig/840020" pageId="0" pageNumber="41">Figs 1</figureCitation>
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<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Petrocodon wui F. Wen & R. B. Zhang, sp. nov. A plants in bloom in natural habitat B plant in flower C upward view of plant showing the abaxial surfaces of leaf blade and petiole D flowering cyme E cymes, calyx and immature capsule F frontal view of corolla G lateral view of corolla and extended pistil H opened corolla I four fertile stamens J calyx and pistil K mature and dehiscent capsules (Photographed by F. Wen and R. B. Zhang)." figureDoi="10.3897/phytokeys.225.99660.figure2" httpUri="https://binary.pensoft.net/fig/840021" pageId="0" pageNumber="41">, 2</figureCitation>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="41" type="diagnosis">
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<paragraph pageId="0" pageNumber="41">Diagnosis.</paragraph>
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<paragraph pageId="0" pageNumber="41">
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<taxonomicName authorityName="F. Wen & R. B. Zhang" authorityYear="2023" class="Magnoliopsida" family="Gesneriaceae" genus="Petrocodon" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Petrocodon wui" order="Lamiales" pageId="0" pageNumber="41" phylum="Tracheophyta" rank="species" species="wui">
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<emphasis italics="true" pageId="0" pageNumber="41">Petrocodon wui</emphasis>
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</taxonomicName>
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is distinguishable by the elongated rhizome, the shape, size and indumentum of calyx lobes, the two conspicuous rows of orange glands on throat and the abaxial surface of the corolla lip. It morphologically resembles
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<taxonomicName lsidName="P. chishuiensis" pageId="0" pageNumber="41" rank="species" species="chishuiensis">
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<emphasis italics="true" pageId="0" pageNumber="41">P. chishuiensis</emphasis>
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</taxonomicName>
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, but can be distinguished by having an elongated rhizome up to 30 cm or longer after years of growth (vs. lacking obvious rhizome in
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<taxonomicName lsidName="P. chishuiensis" pageId="0" pageNumber="41" rank="species" species="chishuiensis">
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<emphasis italics="true" pageId="0" pageNumber="41">P. chishuiensis</emphasis>
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</taxonomicName>
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, following same order); leaf blade oval-oblong (vs. oblong or oblanceolate) and margin conspicuously undulate and densely ciliate (vs. serrate); cyme 4-10-flowered or more (vs. usually 1-3-flowered); anthers sparsely semi-transparent glands (vs. glabrous) and staminodes pale purple, club-like, glabrous (vs. absent or indistinctive).
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</paragraph>
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<caption doi="10.3897/phytokeys.225.99660.figure1" httpUri="https://binary.pensoft.net/fig/840020" pageId="0" pageNumber="41" start="Figure 1" startId="F1">
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<paragraph pageId="0" pageNumber="41">
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<emphasis bold="true" pageId="0" pageNumber="41">Figure 1.</emphasis>
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<taxonomicName authorityName="F. Wen & R. B. Zhang" authorityYear="2023" class="Magnoliopsida" family="Gesneriaceae" genus="Petrocodon" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Petrocodon wui" order="Lamiales" pageId="0" pageNumber="41" phylum="Tracheophyta" rank="species" species="wui">
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<emphasis italics="true" pageId="0" pageNumber="41">Petrocodon wui</emphasis>
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</taxonomicName>
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F.Wen & R.B.Zhang, sp. nov.
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<emphasis bold="true" pageId="0" pageNumber="41">A</emphasis>
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habit
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<emphasis bold="true" pageId="0" pageNumber="41">B</emphasis>
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bracts, showing the abaxial surface
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<emphasis bold="true" pageId="0" pageNumber="41">C</emphasis>
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bracteoles
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<emphasis bold="true" pageId="0" pageNumber="41">D</emphasis>
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abaxial surfaces of calyx lobe
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<emphasis bold="true" pageId="0" pageNumber="41">E</emphasis>
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top view of flower
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<emphasis bold="true" pageId="0" pageNumber="41">F</emphasis>
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opened corolla from the dried flower
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<emphasis bold="true" pageId="0" pageNumber="41">G</emphasis>
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one of stamens
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<emphasis bold="true" pageId="0" pageNumber="41">H</emphasis>
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pistil
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<emphasis bold="true" pageId="0" pageNumber="41">I</emphasis>
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seed. Drawings by Tan Deng from the type specimen.
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</paragraph>
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</caption>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="41" type="materials_examined">
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<paragraph pageId="0" pageNumber="41">
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<typeStatus>Type</typeStatus>
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.
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</paragraph>
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<paragraph pageId="0" pageNumber="41">
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<materialsCitation collectingDate="2023-01-01" collectingDateMax="2023-12-31" collectingDateMin="2023-01-01" country="China" county="Xishui County" elevation="1100" location="Xishui National Nature Reserve" municipality="Zunyi City" specimenCount="1" stateProvince="Guizhou Province" typeStatus="holotype">
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<collectingCountry name="China">China</collectingCountry>
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,
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<collectingRegion country="China" name="Guizhou">Guizhou Province</collectingRegion>
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,
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<collectingMunicipality>Zunyi City</collectingMunicipality>
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,
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<collectingCounty>Xishui County</collectingCounty>
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,
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<location LSID="urn:lsid:plazi:treatment:EB4C6CCE5C83552CAC64C1479E89166A:0370ED6CA82EA725BAD072383C6CD246" country="China" county="Xishui County" municipality="Zunyi City" name="Xishui National Nature Reserve" stateProvince="Guizhou Province">Xishui National Nature Reserve</location>
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,
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<location LSID="urn:lsid:plazi:treatment:EB4C6CCE5C83552CAC64C1479E89166A:EF994610140F1DF234E9A4F3BCB42CE9" country="China" county="Xishui County" municipality="Zunyi City" name="Dabaitang" stateProvince="Guizhou Province">Dabaitang</location>
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,
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<location LSID="urn:lsid:plazi:treatment:EB4C6CCE5C83552CAC64C1479E89166A:CA9F0932974C9A14065F74FEA7E036DD" country="China" county="Xishui County" municipality="Zunyi City" name="Niuqingshan" stateProvince="Guizhou Province">Niuqingshan</location>
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, elev. ca.
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<quantity metricMagnitude="3" metricUnit="m" metricValue="1.1" unit="m" value="1100.0">
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<elevation metricMagnitude="3" metricUnit="m" metricValue="1.1" unit="m" value="1100.0">1100 m</elevation>
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</quantity>
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, growing on a shaded and moist rock surface on the Danxia cliff in the gorge,
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<emphasis italics="true" pageId="0" pageNumber="41">Ren-Bo Zhang ZRB2401</emphasis>
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(
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<typeStatus>holotype</typeStatus>
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: IBK!, isotypes: ZY!)
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</materialsCitation>
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.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="41" type="description">
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<paragraph pageId="0" pageNumber="41">Description.</paragraph>
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<paragraph pageId="0" pageNumber="41">
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Perennial herb, strictly lithophytic.
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<emphasis bold="true" italics="true" pageId="0" pageNumber="41">Rhizome</emphasis>
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brown, abundant fibrous roots, especially at the nodes, rhizome becoming very long and up to 30 cm or longer after years of growth, the lower half of long rhizome usually growing downwards along the surface of rock with lots of fibrous roots, apex of rhizome usually curved and forming a hooked shape, some persistent base of petioles spirally arranged on the surface of rhizome; upper rhizome densely covered with villous multicellular hairs ca. 2 mm long with 4-6 cells.
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<emphasis bold="true" italics="true" pageId="0" pageNumber="41">Leaves</emphasis>
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in whorls of three, 6-15 crowded in a basal rosette or clustered at the top of elongated rhizome after years of growth, but usually some dried leaves persistent below foliage; petiole green, up to ca. 4 cm long, cylindrical, densely white pubescent; leaf blade chartaceous and thinly coriaceous when dried, oval-oblong, 6-10
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<normalizedToken originalValue="×">x</normalizedToken>
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1-3 cm, apex obtuse to acute or subacute, base cuneate, margin entire to inconspicuously or conspicuously undulate and densely ciliate, both surfaces densely white pubescent, lateral veins 4-5-paired;
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<emphasis bold="true" italics="true" pageId="0" pageNumber="41">Inflorescences</emphasis>
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1-4 or more, axillary, cymose, 4-10-flowered or more; peduncle pale green, 1-4 cm long, ca. 1.5 mm in diameter, densely white villous; bracts 2, opposite, pale green, lanceolate, ca. 10
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<normalizedToken originalValue="×">x</normalizedToken>
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0.5 mm, apex acute, margin entire, both surfaces densely covered with villous multicellular hairs, ca. 1.5 mm long with ca. 3 cells; bracteoles 2, pale green, opposite, narrowly lanceolate, ca. 3
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<normalizedToken originalValue="×">x</normalizedToken>
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0.25 mm, indumentum same as bracts, but hairs on only ca. 2 cells; pedicels pale green, 0.8-2 cm long, indumentum same as peduncle.
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<emphasis bold="true" italics="true" pageId="0" pageNumber="41">Calyx</emphasis>
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5-sected to near the base, but base slightly united forming calyx tube ca. 1 mm long; lobes equal, pale green to whitish-green, nearly linear, 6-8 mm long, 5-6 mm wide at the base, apex obtuse to rounded, margin entire, outside densely covered with white villous hairs, inside sparsely covered with white villous hairs.
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<emphasis bold="true" italics="true" pageId="0" pageNumber="41">Corolla</emphasis>
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tubular, white, zygomorphic, ca. 2.5 cm long, outside densely white pubescent, inside nearly glabrous, upper part of corolla close to mouth puberulent; corolla tube 1.7-2.2 cm long, ca. 2.5 mm wide at the base of corolla tube and ca. 4.5 mm at the widest part of corolla tube; limb 2-lipped, adaxial lip shorter, 2-lobed to the middle, lobes broadly triangular, ca. 1.5 mm long, ca. 2.5 mm at the bottom of lobe, abaxial lip longer, 3-lobed to the middle or slightly exceeding the middle, lobes ovate, central one longer than lateral ones, ca. 3.5 mm long, lateral ones ca. 2.8 mm long, with two conspicuous rows of orange glands on abaxial lip and corolla throat.
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<emphasis bold="true" italics="true" pageId="0" pageNumber="41">Stamens</emphasis>
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4, two longer ones adnate to corolla tube ca. 9.5 mm from the base, filaments ca. 4.5 mm long, two shorter ones adnate to corolla tube ca. 8.5 mm from the base, filaments ca. 4 mm long, all filaments linear, straight, but slightly arched at the base and turning into a sheet at the base, white to semi-transparent, densely with brownish-black glands, especially from the middle to the base and glandular-puberulent close to the upper of filament; anthers brownish-purple to dark purple, dorsi-fixed, elliptic to nearly rounded, ca. 1 mm long, ca. 0.9 mm wide, coherent in pairs, thecae confluent at middle, sparsely semi-transparent glands, dehiscing longitudinally. Staminode 1, pale purple, club-like, glabrous, adnate to corolla tube ca. 8 mm from the base. Disc annular, ca. 1 mm high, margin entire.
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<emphasis bold="true" italics="true" pageId="0" pageNumber="41">Pistil</emphasis>
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ca. 2.5 cm long, densely erectly glandular-pubescent; ovary linear-cylindrical, ca. 2 cm long, ca. 1.5 mm wide, 1-loculed, placentas 2, parietal; style ca. 6 mm long, ca. 0.8 mm wide; stigma 2, lobes lamellar, rounded to shallowly spatulate, glabrous, ca. 1 mm long, 0.9-1 mm wide.
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<emphasis bold="true" italics="true" pageId="0" pageNumber="41">Fruit</emphasis>
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a
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<emphasis bold="true" italics="true" pageId="0" pageNumber="41">capsule</emphasis>
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, ca. 5.5 cm long, linear-cylindrical, 4-valved, pubescent.
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<emphasis bold="true" italics="true" pageId="0" pageNumber="41">Seeds</emphasis>
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appendaged, grain shortly cylindrical, rough, ca. 0.5 mm long, ca. 0.3 mm wide, covered densely verrucate.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="41" type="phenology">
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<paragraph pageId="0" pageNumber="41">Phenology.</paragraph>
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<paragraph pageId="0" pageNumber="41">Flowering occurs in August in the wild; fruiting should occur in October, based on current flowering patterns.</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="41" type="etymology">
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<paragraph pageId="0" pageNumber="41">Etymology.</paragraph>
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<paragraph pageId="0" pageNumber="41">
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We dedicate this new species of
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<taxonomicName class="Magnoliopsida" family="Gesneriaceae" genus="Petrocodon" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Petrocodon" order="Lamiales" pageId="0" pageNumber="41" phylum="Tracheophyta" rank="genus">
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<emphasis italics="true" pageId="0" pageNumber="41">Petrocodon</emphasis>
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</taxonomicName>
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to Wu Zheng-Yi (Wu Chengyih) (1916-2013), who devoted over 70 years to the flora of China. The scientific name, "
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<emphasis italics="true" pageId="0" pageNumber="41">wui</emphasis>
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", is the latinisation of Wu
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<normalizedToken originalValue="Zheng-Yi’s">Zheng-Yi's</normalizedToken>
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family name. Coincidentally, a plant enthusiast, Lady Xiang-Hong Wu, took this
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<normalizedToken originalValue="species’">species'</normalizedToken>
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flowering photos in 2017 and sent them to one of the authors (Fang Wen) and her surname is also Wu.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="41" type="vernacular name">
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<paragraph pageId="0" pageNumber="41">Vernacular name.</paragraph>
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<paragraph pageId="0" pageNumber="41">
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The Chinese name proposed here is
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<normalizedToken originalValue="“吴氏石山苣苔.”">"吴氏石山苣苔."</normalizedToken>
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Phonetically, it is
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<normalizedToken originalValue="“Wú">"Wu</normalizedToken>
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<normalizedToken originalValue="Shì">Shi</normalizedToken>
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<normalizedToken originalValue="Shí">Shi</normalizedToken>
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<normalizedToken originalValue="Shān">Shan</normalizedToken>
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<normalizedToken originalValue="Jù">Ju</normalizedToken>
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<normalizedToken originalValue="Tái”">Tai"</normalizedToken>
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.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="41" type="distribution">
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<paragraph pageId="0" pageNumber="41">Distribution and ecology.</paragraph>
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<paragraph pageId="0" pageNumber="41">The new species is endemic to Guizhou Province and known only from the type locality, Xishui National Nature Reserve in Xishui County. It grows on the steep Danxia cliff in an evergreen, broad-leaved forest in a valley of the Danxia landform, at an altitude of 1100-1600 m. The cliff slope faces northwest at an angle of up to 60 to 80 degrees. The tree cover is up to 12 m tall, the canopy cover is 75%, the shrub layer cover is 85% and the herb layer cover is 35%.</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="41" type="conservation status">
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<paragraph pageId="0" pageNumber="41">Conservation status.</paragraph>
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<paragraph pageId="0" pageNumber="41">
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<taxonomicName authorityName="F. Wen & R. B. Zhang" authorityYear="2023" class="Magnoliopsida" family="Gesneriaceae" genus="Petrocodon" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Petrocodon wui" order="Lamiales" pageId="0" pageNumber="41" phylum="Tracheophyta" rank="species" species="wui">
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<emphasis italics="true" pageId="0" pageNumber="41">Petrocodon wui</emphasis>
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</taxonomicName>
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is known only from the type locality, which is protected by national and local laws and regulations. However, it is clearly scarce, being known from only one very small area of occupancy, estimated at 20 m2 on a rock surface in a valley of the Danxia landform. Obviously, this area of occupancy of
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<taxonomicName lsidName="P. wui" pageId="0" pageNumber="41" rank="species" species="wui">
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<emphasis italics="true" pageId="0" pageNumber="41">P. wui</emphasis>
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</taxonomicName>
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we found so far is significantly lower than the smallest AOO unit of IUCN which is 4 km2 (2
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<normalizedToken originalValue="×">x</normalizedToken>
|
||
2 km2 grid) for Critically Endangered B2. According to the detailed information from our careful field observations on the surroundings of the type area, the known population has about 50 individuals, half of those being mature individuals and half being seedlings. According to the Guidelines for using the IUCN Red List Categories and Criteria (
|
||
<bibRefCitation author="Hoang, DT" journalOrPublisher="Molecular Biology and Evolution" pageId="0" pageNumber="41" publicationUrl="https://www.iucnredlist.org/documents/RedListGuidelines.pdf" refId="B7" refString="2022. . https://www.iucnredlist.org/documents/RedListGuidelines.pdf" url="https://www.iucnredlist.org/documents/RedListGuidelines.pdf" year="2022">IUCN Standards and Petitions Committee 2022</bibRefCitation>
|
||
),
|
||
<taxonomicName lsidName="P. wui" pageId="0" pageNumber="41" rank="species" species="wui">
|
||
<emphasis italics="true" pageId="0" pageNumber="41">P. wui</emphasis>
|
||
</taxonomicName>
|
||
is provisionally assessed as "Critically Endangered, CR B2ab(ii) + C2b" because of its limited distribution and vulnerable habitat.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection pageId="0" pageNumber="41" type="taxonomic and phylogenetic notes">
|
||
<paragraph pageId="0" pageNumber="41">Taxonomic and phylogenetic notes.</paragraph>
|
||
<paragraph pageId="0" pageNumber="41">
|
||
The aligned matrix of
|
||
<emphasis italics="true" pageId="0" pageNumber="41">trnL-F</emphasis>
|
||
and ITS sequences comprised 1594 characters. Of the 370 (23.21%) variable characters, 222 (13.93%) were parsimony informative. The phylogenetic trees revealed that all sampled
|
||
<taxonomicName class="Magnoliopsida" family="Gesneriaceae" genus="Petrocodon" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Petrocodon" order="Lamiales" pageId="0" pageNumber="41" phylum="Tracheophyta" rank="genus">
|
||
<emphasis italics="true" pageId="0" pageNumber="41">Petrocodon</emphasis>
|
||
</taxonomicName>
|
||
taxa clustered together as a monophyletic group (BP = 100%), which is consistent with previous studies (
|
||
<bibRefCitation DOI="https://doi.org/10.5735/085.059.0141" author="Yang, ZM" journalOrPublisher="Annales Botanici Fennici" pageId="0" pageNumber="41" pagination="285 - 294" refId="B19" refString="Yang, ZM, Chou, WC, Zhao, FC, Wen, F, Wei, YG, 2022. Petrocodon asterostriatus (Gesneriaceae), a new species from Guangxi, China. Annales Botanici Fennici 59 (1): 285 - 294, DOI: https://doi.org/10.5735/085.059.0141" title="Petrocodon asterostriatus (Gesneriaceae), a new species from Guangxi, China." url="https://doi.org/10.5735/085.059.0141" volume="59" year="2022">Yang et al. 2022</bibRefCitation>
|
||
). Three strongly-supported clades are attributed to
|
||
<taxonomicName class="Magnoliopsida" family="Gesneriaceae" genus="Petrocodon" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Petrocodon" order="Lamiales" pageId="0" pageNumber="41" phylum="Tracheophyta" rank="genus">
|
||
<emphasis italics="true" pageId="0" pageNumber="41">Petrocodon</emphasis>
|
||
</taxonomicName>
|
||
. Of these, the new species belonged in a moderately-supported subclade (BP = 75%) that also includes
|
||
<taxonomicName lsidName="P. hunanensis" pageId="0" pageNumber="41" rank="species" species="hunanensis">
|
||
<emphasis italics="true" pageId="0" pageNumber="41">P. hunanensis</emphasis>
|
||
</taxonomicName>
|
||
X.L.Yu & Ming Li (
|
||
<bibRefCitation DOI="https://doi.org/10.11646/phytotaxa.23.1.3" author="Weber, A" journalOrPublisher="Phytotaxa" pageId="0" pageNumber="41" pagination="49 - 67" refId="B14" refString="Weber, A, Wei, YG, Puglisi, C, Wen, F, Mayer, V, Moeller, M, 2011. A new definition of the genus Petrocodon (Gesneriaceae). Phytotaxa 23 (1): 49 - 67, DOI: https://doi.org/10.11646/phytotaxa.23.1.3" title="A new definition of the genus Petrocodon (Gesneriaceae)." url="https://doi.org/10.11646/phytotaxa.23.1.3" volume="23" year="2011">Weber et al. 2011</bibRefCitation>
|
||
),
|
||
<taxonomicName lsidName="P. tongziensis" pageId="0" pageNumber="41" rank="species" species="tongziensis">
|
||
<emphasis italics="true" pageId="0" pageNumber="41">P. tongziensis</emphasis>
|
||
</taxonomicName>
|
||
R.B.Zhang & F.Wen and
|
||
<taxonomicName lsidName="P. chishuiensis" pageId="0" pageNumber="41" rank="species" species="chishuiensis">
|
||
<emphasis italics="true" pageId="0" pageNumber="41">P. chishuiensis</emphasis>
|
||
</taxonomicName>
|
||
(
|
||
<emphasis italics="true" pageId="0" pageNumber="41">Petrocodon_sp_FW2014</emphasis>
|
||
) (Fig.
|
||
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Phylogenetic tree of Petrocodon generated from Maximum Likelihood (ML) of trnL-F and ITS datasets. Numbers on the branches indicate ML bootstrap values (≥ 50 %)." figureDoi="10.3897/phytokeys.225.99660.figure3" httpUri="https://binary.pensoft.net/fig/840022" pageId="0" pageNumber="41">3</figureCitation>
|
||
). This clade, denoted in
|
||
<bibRefCitation DOI="https://doi.org/10.1111/njb.01774" author="Zhang, RB" journalOrPublisher="Phytotaxa" pageId="0" pageNumber="41" refId="B21" refString="Zhang, RB, Deng, T, Fu, LF, Li, S, He, L, Dou, QL, Wen, F, 2019. Petrocodon tongziensis (Gesneriaceae), a new species from limestone areas in Guizhou, China based on morphological and molecular evidence. Nordic Journal of Botany 2019(2): e01774. https://doi.org/10.1111/njb.01774" title="Petrocodon tongziensis (Gesneriaceae), a new species from limestone areas in Guizhou, China based on morphological and molecular evidence. Nordic Journal of Botany 2019 (2): e 01774." url="https://doi.org/10.1111/njb.01774" year="2019">Zhang et al. (2019)</bibRefCitation>
|
||
, has four fertile stamens as a synapomorphy and our morphological observation of the new species supported this (Fig.
|
||
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Petrocodon wui F. Wen & R. B. Zhang, sp. nov. A plants in bloom in natural habitat B plant in flower C upward view of plant showing the abaxial surfaces of leaf blade and petiole D flowering cyme E cymes, calyx and immature capsule F frontal view of corolla G lateral view of corolla and extended pistil H opened corolla I four fertile stamens J calyx and pistil K mature and dehiscent capsules (Photographed by F. Wen and R. B. Zhang)." figureDoi="10.3897/phytokeys.225.99660.figure2" httpUri="https://binary.pensoft.net/fig/840021" pageId="0" pageNumber="41">2</figureCitation>
|
||
). Within this clade, the new species is most closely related to
|
||
<taxonomicName lsidName="P. chishuiensis" pageId="0" pageNumber="41" rank="species" species="chishuiensis">
|
||
<emphasis italics="true" pageId="0" pageNumber="41">P. chishuiensis</emphasis>
|
||
</taxonomicName>
|
||
(BP = 100%) (Fig.
|
||
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Phylogenetic tree of Petrocodon generated from Maximum Likelihood (ML) of trnL-F and ITS datasets. Numbers on the branches indicate ML bootstrap values (≥ 50 %)." figureDoi="10.3897/phytokeys.225.99660.figure3" httpUri="https://binary.pensoft.net/fig/840022" pageId="0" pageNumber="41">3</figureCitation>
|
||
), whereas it can be easily distinguished from the latter by its rhizome, leaf blade, flowers number per cyme, bracts, bracteoles, calyx, filaments, anthers and staminodes, all of which are presented in Table
|
||
<tableCitation captionStart="Table 2" captionStartId="T2" captionText="Table 2. Morphological comparison of Petrocodon wui and P. chishuiensis." httpUri="http://table.plazi.org/id/39D67A540465E6E4B42055336A892063" pageId="0" pageNumber="41" tableUuid="39D67A540465E6E4B42055336A892063">2</tableCitation>
|
||
.
|
||
</paragraph>
|
||
<caption ID-Table-UUID="39D67A540465E6E4B42055336A892063" httpUri="http://table.plazi.org/id/39D67A540465E6E4B42055336A892063" pageId="0" pageNumber="41" start="Table 2" startId="T2">
|
||
<paragraph pageId="0" pageNumber="41">
|
||
<emphasis bold="true" pageId="0" pageNumber="41">Table 2.</emphasis>
|
||
Morphological comparison of
|
||
<taxonomicName authorityName="F. Wen & R. B. Zhang" authorityYear="2023" class="Magnoliopsida" family="Gesneriaceae" genus="Petrocodon" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Petrocodon wui" order="Lamiales" pageId="0" pageNumber="41" phylum="Tracheophyta" rank="species" species="wui">
|
||
<emphasis italics="true" pageId="0" pageNumber="41">Petrocodon wui</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName lsidName="P. chishuiensis" pageId="0" pageNumber="41" rank="species" species="chishuiensis">
|
||
<emphasis italics="true" pageId="0" pageNumber="41">P. chishuiensis</emphasis>
|
||
</taxonomicName>
|
||
.
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph pageId="0" pageNumber="41">
|
||
<table pageId="0" pageNumber="41">
|
||
<tr pageId="0" pageNumber="41">
|
||
<th colspan="2" pageId="0" pageNumber="41" rowspan="1">Characters</th>
|
||
<th colspan="1" pageId="0" pageNumber="41" rowspan="1">
|
||
<taxonomicName lsidName="P. wui" pageId="0" pageNumber="41" rank="species" species="wui">
|
||
<emphasis italics="true" pageId="0" pageNumber="41">P. wui</emphasis>
|
||
</taxonomicName>
|
||
</th>
|
||
<th colspan="1" pageId="0" pageNumber="41" rowspan="1">
|
||
<taxonomicName lsidName="P. chishuiensis" pageId="0" pageNumber="41" rank="species" species="chishuiensis">
|
||
<emphasis italics="true" pageId="0" pageNumber="41">P. chishuiensis</emphasis>
|
||
</taxonomicName>
|
||
</th>
|
||
</tr>
|
||
<tr pageId="0" pageNumber="41">
|
||
<td colspan="2" pageId="0" pageNumber="41" rowspan="1">Rhizome</td>
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">present, becoming very long and up to 30 cm or longer after years of growth</td>
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">lacking rhizome</td>
|
||
</tr>
|
||
<tr pageId="0" pageNumber="41">
|
||
<td colspan="4" pageId="0" pageNumber="41" rowspan="1">Leaf blade</td>
|
||
</tr>
|
||
<tr pageId="0" pageNumber="41">
|
||
<td colspan="1" isEmpty="true" pageId="0" pageNumber="41" rowspan="3">-</td>
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">Shape</td>
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">oval-oblong</td>
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">oblong or oblanceolate</td>
|
||
</tr>
|
||
<tr pageId="0" pageNumber="41">
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">Margin</td>
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">entire to inconspicuously or conspicuously undulate and densely ciliate</td>
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">serrate</td>
|
||
</tr>
|
||
<tr pageId="0" pageNumber="41">
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">lateral veins</td>
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">4-5-paired</td>
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">5-6-paired</td>
|
||
</tr>
|
||
<tr pageId="0" pageNumber="41">
|
||
<td colspan="2" pageId="0" pageNumber="41" rowspan="1">Flowers number per cyme</td>
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">4-10-flowered or more</td>
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">usually 1-3-flowered</td>
|
||
</tr>
|
||
<tr pageId="0" pageNumber="41">
|
||
<td colspan="4" pageId="0" pageNumber="41" rowspan="1">Bracts</td>
|
||
</tr>
|
||
<tr pageId="0" pageNumber="41">
|
||
<td colspan="1" isEmpty="true" pageId="0" pageNumber="41" rowspan="3">-</td>
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">Shape</td>
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">lanceolate</td>
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">oblong</td>
|
||
</tr>
|
||
<tr pageId="0" pageNumber="41">
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">Width</td>
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">ca. 0.5 mm wide</td>
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">ca. 3 mm wide</td>
|
||
</tr>
|
||
<tr pageId="0" pageNumber="41">
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">Indumentum</td>
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">both surfaces densely covered multicellular nodose villous and hairs ca. 1.5 mm long with ca. 3 cells</td>
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">outside whitish pubescent, inside sparsely pubescent</td>
|
||
</tr>
|
||
<tr pageId="0" pageNumber="41">
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">Bracteoles</td>
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">Size</td>
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">
|
||
ca. 3
|
||
<normalizedToken originalValue="×">x</normalizedToken>
|
||
0.25 mm
|
||
</td>
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">
|
||
6-7
|
||
<normalizedToken originalValue="×">x</normalizedToken>
|
||
ca. 1.5 mm
|
||
</td>
|
||
</tr>
|
||
<tr pageId="0" pageNumber="41">
|
||
<td colspan="2" pageId="0" pageNumber="41" rowspan="1">Calyx</td>
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">5-sected to near the base, but base slightly united forming calyx tube and tube ca. 1 mm long</td>
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">5-sected from base</td>
|
||
</tr>
|
||
<tr pageId="0" pageNumber="41">
|
||
<td colspan="4" pageId="0" pageNumber="41" rowspan="1">Filaments</td>
|
||
</tr>
|
||
<tr pageId="0" pageNumber="41">
|
||
<td colspan="1" isEmpty="true" pageId="0" pageNumber="41" rowspan="2">-</td>
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">Length</td>
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">two longer ones 4.5 mm long, two shorter ones ca. 4 mm long</td>
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">two longer ones ca. 9 mm long, two shorter ones ca. 8 mm long</td>
|
||
</tr>
|
||
<tr pageId="0" pageNumber="41">
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">Indumentum</td>
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">densely with brownish-black glands especially from the middle to the base and glandular-puberulent close to the upper of filament</td>
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">densely with glandular-puberulent hairs especially at the base</td>
|
||
</tr>
|
||
<tr pageId="0" pageNumber="41">
|
||
<td colspan="4" pageId="0" pageNumber="41" rowspan="1">Anthers</td>
|
||
</tr>
|
||
<tr pageId="0" pageNumber="41">
|
||
<td colspan="1" isEmpty="true" pageId="0" pageNumber="41" rowspan="2">-</td>
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">Length</td>
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">ca. 1 mm long</td>
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">ca. 1.8 mm long</td>
|
||
</tr>
|
||
<tr pageId="0" pageNumber="41">
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">Indumentum</td>
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">sparsely semi-transparent glands</td>
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">glabrous</td>
|
||
</tr>
|
||
<tr pageId="0" pageNumber="41">
|
||
<td colspan="2" pageId="0" pageNumber="41" rowspan="1">Staminodes</td>
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">pale purple, club-like, glabrous</td>
|
||
<td colspan="1" pageId="0" pageNumber="41" rowspan="1">absent or extremely indistinctive</td>
|
||
</tr>
|
||
</table>
|
||
</paragraph>
|
||
<caption doi="10.3897/phytokeys.225.99660.figure2" httpUri="https://binary.pensoft.net/fig/840021" pageId="0" pageNumber="41" start="Figure 2" startId="F2">
|
||
<paragraph pageId="0" pageNumber="41">
|
||
<emphasis bold="true" pageId="0" pageNumber="41">Figure 2.</emphasis>
|
||
<taxonomicName authorityName="F. Wen & R. B. Zhang" authorityYear="2023" class="Magnoliopsida" family="Gesneriaceae" genus="Petrocodon" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Petrocodon wui" order="Lamiales" pageId="0" pageNumber="41" phylum="Tracheophyta" rank="species" species="wui">
|
||
<emphasis italics="true" pageId="0" pageNumber="41">Petrocodon wui</emphasis>
|
||
</taxonomicName>
|
||
F.Wen & R.B.Zhang, sp. nov.
|
||
<emphasis bold="true" pageId="0" pageNumber="41">A</emphasis>
|
||
plants in bloom in natural habitat
|
||
<emphasis bold="true" pageId="0" pageNumber="41">B</emphasis>
|
||
plant in flower
|
||
<emphasis bold="true" pageId="0" pageNumber="41">C</emphasis>
|
||
upward view of plant showing the abaxial surfaces of leaf blade and petiole
|
||
<emphasis bold="true" pageId="0" pageNumber="41">D</emphasis>
|
||
flowering cyme
|
||
<emphasis bold="true" pageId="0" pageNumber="41">E</emphasis>
|
||
cymes, calyx and immature capsule
|
||
<emphasis bold="true" pageId="0" pageNumber="41">F</emphasis>
|
||
frontal view of corolla
|
||
<emphasis bold="true" pageId="0" pageNumber="41">G</emphasis>
|
||
lateral view of corolla and extended pistil
|
||
<emphasis bold="true" pageId="0" pageNumber="41">H</emphasis>
|
||
opened corolla
|
||
<emphasis bold="true" pageId="0" pageNumber="41">I</emphasis>
|
||
four fertile stamens
|
||
<emphasis bold="true" pageId="0" pageNumber="41">J</emphasis>
|
||
calyx and pistil
|
||
<emphasis bold="true" pageId="0" pageNumber="41">K</emphasis>
|
||
mature and dehiscent capsules (Photographed by F. Wen and R.B. Zhang).
|
||
</paragraph>
|
||
</caption>
|
||
<caption doi="10.3897/phytokeys.225.99660.figure3" httpUri="https://binary.pensoft.net/fig/840022" pageId="0" pageNumber="41" start="Figure 3" startId="F3">
|
||
<paragraph pageId="0" pageNumber="41">
|
||
<emphasis bold="true" pageId="0" pageNumber="41">Figure 3.</emphasis>
|
||
Phylogenetic tree of
|
||
<taxonomicName class="Magnoliopsida" family="Gesneriaceae" genus="Petrocodon" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Petrocodon" order="Lamiales" pageId="0" pageNumber="41" phylum="Tracheophyta" rank="genus">
|
||
<emphasis italics="true" pageId="0" pageNumber="41">Petrocodon</emphasis>
|
||
</taxonomicName>
|
||
generated from Maximum Likelihood (ML) of
|
||
<emphasis italics="true" pageId="0" pageNumber="41">trnL-F</emphasis>
|
||
and ITS datasets. Numbers on the branches indicate ML bootstrap values (≥ 50%).
|
||
</paragraph>
|
||
</caption>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |