As an example, Schuster, 1963, created the botanical subgenus Acantholejeunea within the genus Drepanolejeunea, subsequently re-ranking it as a genus in 1967, whereupon its name became Acantholejeunea (R.M. Schuster) R.M. Schuster, 1967, and within scope for inclusion in IRMNG. Following this taxon's treatment in the "Tropicos" database, IRMNG presently treats this genus name as a synonym of Ceratolejeunea, refer current IRMNG taxon page for Acantholejeunea.
