Boronia Sm. sect. Valvatae (Benth.) Engl, is revised and an infrageneric classification is presented. Four species, B. alata Sm,, B. algida F. Muell., B. corynophylla Paul G. Wilson and B. edwardsii Benth. are removed from Boronia sect. Valvatae and two sections, Alatae Duretto (monotypic) and Algidae Duretto, are newly described to accommodate them. Within Boronia sect. Valvatae s. str., four subsections, nine series and five subseries are described, including the following new ones: