The monotypic subgenus Acanthoxytropis C. W. Chang of Oxytropis was established in 1988 based on the species O. grubovii Ulzij., which is mainly characterized by solitary flower, coriaceous pods, and keels without beak, while these are typical character of the genus Chesneya Lindl. ex Endl. The present author checked authoritative specimens and assigns it C. macrantha Cheng f. ex H. C. Fu.