论文部分内容阅读
白花蛇舌草是我国重要的传统中药,主要是指茜草科(Rubiaceae)钮扣草族(Spermacoceae)的Oldenlandia diffusa,但伞房花耳草(O.corymbosa)在民间或中药市场也常被作为替代品使用。由于长期以来Hedyotis-Oldenlandia复合群的分类存在许多争论,因此白花蛇舌草有时被归入非洲耳草属(Oldenlandia L.),有时又作为广义耳草属(Hedyotis L.s.l.)的成员。为了澄清白花蛇舌草命名上的问题,基于7个叶绿体片段和2个核基因片段对钮扣草族85个分类群进行了系统发育分析。结果表明,白花蛇舌草不属于以上两属中的任何一属,而应为蛇舌草属[Scleromitrion(Wight&Arn.)Meisn.]的成员。依此结果,对5种植物进行了新组合,并提供了白花蛇舌草和伞房花耳草的形态学比较,以有助于在实践中更好地进行区分。
Hedyotis diffusa is an important traditional Chinese medicine in our country and mainly refers to the Oldenlandia diffusa of the Rubiaceae family Spermacoceae. However, O. corymbosa is also commonly used in the private or traditional Chinese medicine market as Alternative use. Hedyotis spp. Is sometimes classified as Oldenlandia L. and sometimes as a member of Hedyotis L. spp. Due to the longstanding debate over the classification of the Hedyotis-Oldenlandia complex. In order to clarify the naming problem of Hedyotis diffusa, phylogenetic analysis was performed on 85 taxa of the button herbage based on seven chloroplast fragments and two nuclear gene fragments. The results showed that Hedyotis diffusa does not belong to any of the above two genera, but should be a member of the genus [Scleromitrion (Wight & Arn.) Meisn.]. Based on this result, five new combinations of plants were made and a morphological comparison of Hedyotis diffusa and Calendula officinalis was provided to help better distinguish in practice.