Abstract: 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 suggested 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. According 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 Radiaticorollarus enpingensis(F. Wen, Y. G. Wei & Z. B. Xin)F. Wen, Y. G. Wei & Lei Cai.

Key words: Actinostephanus, Actinostephanus enpingensis, Gesneriaceae, new name, new combination

摘要： 辐冠苣苔属为中国广东特有苦苣苔科单型属,因其具有苦苣苔科中相对比较少见的辐射状花冠裂片而得名。有学者提出因其属名Actinostephanus F. Wen, Y. G. Wei & L. F. Fu和已灭绝的化石浮游植物属名Actinostephanos Khursevich极其相似而易于混淆,应处理为晚出同名。依据2018年《国际藻类、菌物和植物命名法规(深圳法规)》,该文为该晚出同名拟定了一个新名称,即Radiaticorollarus Y. G. Wei, F. Wen & Lei Cai,并将其属下辐冠苣苔Actinostephanus enpingensis F. Wen, Y. G. Wei & Z. B. Xin处理为新组合Radiaticorollarus enpingensis(F. Wen, Y. G. Wei & Z. B. Xin)F. Wen, Y. G. Wei & Lei Cai的异名。

关键词: 辐冠苣苔属, 辐冠苣苔, 苦苣苔科, 新名称, 新组合