Subjects: Biology >> Botany >> Applied botany submitted time 2024-03-26 Cooperative journals: 《广西植物》
Abstract： Since the establishment of Anna in 1930, the taxonomic revisions of this genus have been infrequent. Early publications and revisions of Anna were based on specimens collected by foreign missionaries, which led to problems such as brief or inaccurate descriptions of traits and unclear species definition. When researching publication history, comparing morphology and investigating type locality of Anna ophiorrhizoides (Hemsl.) B. L. Burtt & R. A. Davidson and A. rubidiflora S. Z. He, F. Wen & Y. G. Wei, we found that Didymocarpus cavaleriei H. Lév. published by H. Léveillé in 1911 and Anna rubidiflora are actually the same species, and Didymocarpus cavaleriei was treated as a synonym of Anna ophiorrhizoides. After comparing the morphological characteristics of multiple populations of A. ophiorrhizoides and A. rubidiflora, it was found that the difference in their morphological characteristics lies in the corolla. It is not appropriate to use differences in corolla color as boundaries for the classificatory units of species. Taking into account the morphological characteristics and geographical distribution characteristics, it is proposed to treat Anna rubidiflora as a variety of Anna ophiorrhizoides. According to the regulations and suggestions in the 2018 International Code of Nomenclature for Algae, Fungi, and Plants (Shenzhen Code), we propose a new combination and a name at new rank——Anna ophiorrhizoides (Hemsl.) B. L. Burtt & R. A. Davidson var. cavaleriei（H.Lév.）X. X. Bai & F. Wen, and treat Anna rubidiflora as the synonym of the new combination.
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