摘 要 ：由于同时指定两号标本为模式，桦木科(Betulaceae)的九龙桦 (Betula jiulungensis Hu ex P. C. Li)和茜草科(Rubiaceae)的卵叶茜草(Rubia ovatifolia Z. Y. Zhang)是不合格发表的名称。现通过分别指定主模式，对九龙桦和卵叶茜草的名称作合格发表。
Abstract:Two names Betula jiulungensis (Betulaceae) and Rubia ovatifolia (Rubiaceae) were not validly published because two gatherings were simultaneously designated as types in the protologues. Two names are here validated with the fame specimen or the flowering specimen as the holotype respectively.