Boronia subulifolia is a plant in the citrus family Rutaceae and is endemic to a small area in south-eastern New South Wales in Australia. It is an erect, woody shrub with pinnate leaves with mostly linear leaflets, and light to deep pink, four-petalled flowers in the leaf axils or on the ends of the branches.
Boronia subulifolia is an erect, woody shrub that grows to a height of NaNsigfig=1NaNsigfig=1 with more or less hairy younger stems. The leaves are pinnate with mostly five or seven leaflets and are NaNsigfig=1NaNsigfig=1 long and NaNsigfig=1NaNsigfig=1 wide in outline on a petiole NaNsigfig=1NaNsigfig=1 long. The leaflets are linear to lance-shaped, NaNsigfig=1NaNsigfig=1 long and NaNsigfig=1NaNsigfig=1 wide. The flowers are light to deep pink and are usually arranged singly in leaf axils or on the ends of branches on a pedicel up to 1sigfig=1NaNsigfig=1 long. The four sepals are narrow triangular, NaNsigfig=1NaNsigfig=1 long, NaNsigfig=1NaNsigfig=1 wide and hairy on the lower side. The four petals are NaNsigfig=2NaNsigfig=2 long and are slightly hairy. The stigma is about the same width as the style. Flowering occurs from September to January and the fruit is a mostly glabrous capsule NaNsigfig=2NaNsigfig=2 long and NaNsigfig=1NaNsigfig=1 wide.[1] [2]
Boronia subulifolia was first formally described in 1928 by Edwin Cheel and the description was published in Journal and Proceedings of the Royal Society of New South Wales.[3] [4] The specific epithet (subulifolia) is derived from Latin word subula meaning "an awl"[5] and folium meaning "a leaf", referring to the finely pointed leaflets.[6]
Boronia subulifolia grows in heath and woodland on rocky sandstone, mainly in the Budawang Range.