Abstract: Molecular and morphological evidence suggests that the newly described Hunaniopanax hypo-glaucus C.J.QI & T.R.Cao is nested within Aralia L.Specifically Hunaniopanax is closely related to Aralia parasitica and A.uerticllata.Morphological data support its sister species relationship with A.uer-ticillata because the two taxa share a synapomorphy of verticillate pattern of inflorescence .To maintain the monophyly of Aralia,Hunaniopanax is herein merged with Aralia, and a new comination,Aralia hypo-glauca(c.J,Qi&T.R.Caao)J,Wen & Y.F.Deng ,is made .Aralia hypoglauca is also newly recorded from Guangxi,China in thes study.The previously hypothesized close relationship of Hunanuio-panax with Dendropanax Decne,& planch.was refuted by our micronorphological examination as well as the DNA data.A new species,Aralia shangiana J.Wen, is herein described and two new combinations and a new name are also proposed:Aralia glabrifoliolata (C.B.Shang)J.Wen,comb.nov .,A.st-ellata(king )J.Wen,comd.nov.,and A.delauayi J. Wen nom .nov

Key words: Hunaniopanax, Aralia glabrifoliolata, Aralia stellata.

摘要： 分子与形态证据表明湖南参(Hunaniopanax hypoglaucus C.J.Qi ＆ T.R.Cao)起源于?木属(Aralia L.),湖南参的近缘种为寄生五叶参(Aralia parasitica)和轮伞五叶参(Aralia verticillata),形态证据支持湖南参为轮伞五叶参的姐妹种,此2种具轮伞花序这一共衍征.为了保证?木属的单系性,现将湖南参并入?木属,并作如下新组合:Aralia hypoglauca (C.J.Qi ＆ T.R.Cao) J.Wen ＆ Y.F.Deng.本文报道了湖南参在广西的新分布.目前的形态学和分子数据均不支持早先提出的湖南参与树参属(Dendropanax)的近缘关系.本文亦报道了?木属的1新种、2新种组合和1个新名称:Aralia shangiana J.Wen.sp.nov.(向氏五叶参,新种);Aralia glabrifoliolata (C.B.Shang) J.Wen.comb.nov.(光叶五叶参,新组合);Aralia stellata (King) J.Wen,comb.nov.(星毛羽叶参,新组合)和Aralia delavayi J.Wen.nom.nov.(云南五叶参,新名称).

关键词: 湖南参属, 羽叶参属, 木属, 羽叶参组, 五加科, 湖南参, 光叶羽叶参, 新组合, 新名称