Abstract: Chrysosplenium fallax Koldaeva, recently discovered and collected in Yanji, Jilin Province, represents a newly recorded species of Saxifragaceae in China. This species, native to the Russian Far East, was first described as a new species in 2021. Based on precise field investigations and specimen examination, we provide a comprehensive description of C. fallax and its seed micromorphology. Phylogenetic analysis based on chloroplast genomes of 45 Chrysosplenium species confirmed the systematic position of C. fallax in Chrysosplenium. Voucher specimens were deposited in the Herbarium of South-Central Minzu University (HSN).