Actinostephanus F.Wen,Y.G.Wei & L.F.Fu is a monotypic genus in Gesneriaceae endemic to Guangdong,China.It is named for its radiate corolla lobes,the relatively rare character among Gesneriaceae.Some scholars have sug-gested that the name Actinostephanus is easily confused with the generic name of the extinct fossil phytoplankton Actinostephanos Khursevich,and proposed that Actinostephanus should be treated as a later homonym of Actinostephanos.Ac-cording to the International Code of Nomenclature of Algae,Fungi and Plants(Shenzhen Code)(2018),we here propose a new name Radiaticorollarus Y.G.Wei,F.Wen & Lei Cai for the later homonym Actinostephanus F.Wen,Y.G.Wei &L.F.Fu,and treat Actinostephanus enpingensis F.Wen,Y.G.Wei & Z.B.Xin as a synonym of the new combination Radi-aticorollarus enpingensis(F.Wen,Y.G.Wei & Z.B.Xin)F.Wen,Y.G.Wei & Lei Cai.
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