Révision synoptique du genre Lastreopsis Ching (Dryopteridaceae) à Madagascar

Adansonia

France Rakotondrainibe¹  Frédéric Tronchet¹ 

关键词: Pteridophyta;    Dryopteridaceae;    Lastreopsis;    Madagascar;    espèces nouvelles;    lectotypification;    Pteridophyta;    Dryopteridaceae;    Lastreopsis;    Madagascar;    new species;    lectotypification;   

DOI  :  10.5252/a2009n1a1

学科分类：植物学

来源: Museum National d Histoire Naturelle

【 摘 要 】

SynopticrevisionofthegenusLastreopsisChing(Dryopteridaceae)inMadagascar.ThispaperpresentsasynopticrevisionofthegenusLastreopsisChing(Dryopteridaceae)inMadagascar.Anewidentificationkeyispresented,alongwithnewdistributionmaps.ThepresenceofL.barteriana(Hook.)Tardieu,anAfricanspecies,isindicatedforthefirsttime.Threenewspeciesaredescribed:1)L.coriaceosquamataRakotondr.resemblesL.boivinii(Baker)Tardieubutcanbedistinguishedbydifferencesinthemorphologyofthescalespresentonitsrhizomeandpetiolebase,whichisbrownishblack,coriaceous,flat,andappressed;2)L.manongarivensisRakotondr.canbeeasilydistinguishedbyitsuprightrhizomecoveredwithred,membraneousscales;and3)L.fideleiRakotondr.hasmediansorisimilartothoseofL.currorii(Mett.exKuhn)Tindalebutcanbedistinguishedbyhavingnon-gemmiferousfronds,medianpinnaethatare1-pinnate-pinnatifidandindusiawithentiremargins.TwoAfricanspecies,L.curroriiandL.subsimilis(Hook.)Tindale,havebeencitedintheliteratureasoccurringinMadagascar,butthematerialfromtherediffersclearlyfromthetypespecimens,andthesetaxaarenolongerthoughttooccurinMadagascar.ThetypeofLastreopsishornei(Baker)TindalefromtheSeychelles,isfragmentary,andthisnameistreatedas“insufficientlyknown”.Finally,alectotypeisdesignatedforNephrodiumgranulosumBaker,asynonymofL.boivinii.

【 授权许可】

Unknown