Boronia grows or originates almost exclusively from Australia.
The most fragrant boronia is the Boronia megastigma. It is often used in flower arrangements because of it's very intense perfume. There are around 95 species of boronia. The leaves of the boronia megastigma are also fragrant. The flowers are brown and cup shaped with yellow insides.
For perfumery the flowers are collected and then extracted using solvents to produce a concrete. The concrete is further extracted with alcohol to produce boronia absolute. The absolute is semi-liquid and normally dark green and has a fruity tea like odor. In natural perfumery boronia is used with mimosa, violet and honeysuckle base formulations.