Peltiera (Fabaceae), the coming and going of an “extinct” genus in Madagascar

Adansonia

Matt Lavin¹  Peter B. Phillipson¹  Mats Thulin¹ 

关键词: Fabaceae;    Ormocarpopsis;    Peltiera;    Madagascar;    endemism;    phylogenetic analysis;    conservation threat analysis;    lectotypification;    new combination;    Fabaceae;    Ormocarpopsis;    Peltiera;    Madagascar;    endémisme;    analyse phylogénétique;    évaluation du statut de conservation;    lectotypifcation;    combinaison nouvelle;   

DOI  :  10.5252/a2013n1a6

学科分类：植物学

来源: Museum National d Histoire Naturelle

【 摘 要 】

PeltieraDuPuyamp;LabatisaMalagasygenusoftwodescribedspeciesthoughtprobablytobeextinctatthetimeofitspublicationin1997,whenitwasknownonlyfromatotalofthreepre-1950collections.However,recentfieldworkineast-centralMadagascarhasresultedinthediscoveryofstillextantpopulations,andthereforeitisnowpossibletoreconsiderthephylogeneticpositionandstatusofthegenusanditstwospecies.Phylogeneticanalysesbasedonmolecular(chloroplasttrnKandnuclearribosomalITSsequences)andmorphologicaldatacorroboratethecloserelationshipbetweenPeltieraandOrmocarpopsisR.Vig.,agenusofsixspecies,alsoendemictoMadagascar.PeltieradiffersfromOrmocarpopsismainlybyhavingarticulated,dehiscentfruits,andthetwogeneratogetherare,inturn,sistertothewidespreadbutmainlyAfricanOrmocarpumP.Beauv.Morphological,distributionalandhabitatdatagatheredfromthenewcollectionsshowthatonlyasinglespeciesofPeltieracanberecognized,andasthisspeciessharesimportantsynapomorphieswithallspeciesofOrmocarpopsis,itistransferredtothisgenusasO.nitida,comb.nov.AdistributionmapandphotographsofO.nitidacomb.nov.arepresented,andaconservationthreatanalysisofthespeciesisprovided.ThenameOrmocarpopsisislectotypifiedandanamendeddescriptionofthegenuswithitsnewcircumscriptionisgiven.

【 授权许可】

Unknown