Rhachidosorus

Rhachidosorus is a genus of ferns in the order Polypodiales. It is the only genus in the family Rhachidosoraceae in the Pteridophyte Phylogeny Group classification of 2016 (PPG I). Alternatively, the genus may be placed in the subfamily Rhachidosoroideae of a more broadly defined family Aspleniaceae, the family placement used in Plants of the World Online .

==Species== The genus was described by Ren Chang Ching in 1964, with about 7 species in eastern and southeastern Asia, including Japan, the Philippines, and Sumatra. , Plants of the World Online accepted the following species: Rhachidosorus blotianus Ching – China, Vietnam Rhachidosorus chrysocarpus (Alderw.) Ching Rhachidosorus consimilis Ching – China (Guizhou, Sichuan, Yunnan) Rhachidosorus mesosorus (Makino) Ching – China, Japan, South Korea Rhachidosorus pulcher (Tagawa) Ching – Taiwan, Yunnan Rhachidosorus siamensis S.Linds. Rhachidosorus stramineus (Copel.) Ching Rhachidosorus truncatus Ching – China (Guangxi, Guizhou, Yunnan)