Shrubs, herbs or rarely small trees. Leaves opposite, simple or imparipinnate or bipinnate. Inflorescence terminal or axillary or both, cymose. Flowers bisexual; sepals 4, free; petals 4, free, usually pink or white, sometimes blue, rarely green, yellow or brown; stamens 8 (rarely 4 or 6; see B. parviflora), all fertile (in Victoria), erect; disc entire, not swollen; carpels virtually free, lacking sterile apex, styles terminal on ovary (in Victoria). Fruit of 1–4 follicles; follicles not transversely ridged, with rounded apices, seeds released explosively with elastic endocarp; seeds c. elliptic, shiny or dull, black or grey or rarely brown, dorsal side sometimes flattened.
About 148 species, all endemic in Australia, occurring in all States.
Boronia inornata Turcz. of Western Australia and South Australia was included as a Victorian species by Willis (1973), but the record appears to have been based on misdetermined specimens of the very variable B. pilosa Labill. It is no longer regarded as a member of the Victorian flora.