Two new species of the genus Benthamia A. Rich. (Orchidaceae) from Madagascar, B. boiteaui Hervouet, sp. nov. and B. bosseri Hervouet, sp. nov.

[摘要] TwonewspeciesofBenthamiaA.Rich.(Orchidaceae)fromMadagascar,B.boiteauiHervouet,sp.nov.andB.bosseriHervouet,sp.nov.,aredescribed.BothhavebeenfoundatthesummitofAmbondrombe(HauteMatsiatraregion,nearAmbalavao),andalso,forB.boiteauiHervouet,sp.nov.intheRanomafananationalpark,andforB.bosseriHervouet,sp.nov.intheAndringitramassif.ThetwospeciesarerepresentedintheParisherbariumattheMuséumnationald'Histoirenaturelle(MNHN)byspecimenscollectedinApril1941byPierreBoiteauandmorerecently,forB.boiteauiHervouet,sp.nov.byspecimensatK,MOandTAN,andforB.bosseriHervouet,sp.nov.,byspecimenscollectedbyJeanBosserinApril1964.Withlinearleavesandanellipticdorsalsepal,B.boiteauiHervouet,sp.nov.caneasilybedistinguishedfromotherBenthamiawithwhiteflowers.Thenonresupinated,droopingflowersandthearchingspikeofB.bosseriHervouet,sp.nov.areverydistinctivetoo.

[学科分类] 植物学

[关键词] Orchidaceae;Benthamia;Madagascar;Ambondrombe;Andringitra;Ranomafana;new species;Orchidaceae;Benthamia;Madagascar;Ambondrombe;Andringitra;Ranomafana;espèces nouvelles