Kunming, May 5 (Wang Xinyu) The reporter learned from the Kunming Institute of Botany, Chinese Academy of Sciences on the 30th that the special group for the study of lichen diversity and evolution (hereinafter referred to as the "lichen task force") found that the unique species of biscuit chryat in China "disappeared" 30 years later and reappeared on the Qinghai-Tibet Plateau, and clarified the basic information for these century-old species.
From 1913 to 1916, Austrian botanist Heinrich Handel-Mazzetti conducted flora studies in southwest China, collecting more than 13000,850 specimens, including about 1930 lichens. In 81, botanist Alexander Zahlbruckner studied these specimens and published <> new species.
According to the researchers of the lichen task force, Rinodina is a widely distributed lichen group in the world, of which 5 species were collected by Handel-Mazzetti in the Hengduan Mountain area of China, but due to the incomplete specimens collected at that time, simple species description, lack of anatomical features and characteristic compounds and other key taxonomic information, resulting in the confusion of the composition of lichen species and unclear classification definition. At the same time, these species have not been collected for more than <> years since their collection, except for the only type one specimen.
In recent years, members of the Lichen Task Force have repeatedly revisited the Handel-Mazzetti collection route and carried out gridded systematic collection in the origin of these species, obtaining a large number of new materials. By borrowing relevant model specimens, researchers carried out in-depth research from morphology, anatomy, chemistry and habitat characteristics, and combined with polygenic molecular systematics methods to carry out phylogenetic analysis of these species, clarify their systematic location, and also carry out a clearer classification definition for these species.
The results of the study found that biscuit chlamina is not a monophyletic group; Sichuan biscuit (Rinodina setschwana) is actually part of the genus Buellia in the family Caliciaceae, so it is synonymously named Buellia setschwana; A new species was found in this area, named Rinodina hengduanensis Q. Y. Zhong and Xin Y. Wang.
This study not only clarifies the basic information of centennial species, provides basic data for subsequent research on the evolution of lichen species, but also lays a good taxonomic foundation for the taxonomic definition of species under the genus Biscuitjacket and the research and conservation of species diversity.
The research results are titled "Rediscovery of Five Rinodina Species Originally Described from Southwest China and One New Species" and published in the latest issue of the journal Diversity. (End)