Pittosporum angustifolium, commonly known as butterbush, weeping pittosporum, berrigan, native willow, native apricot, western pittosporum, apricot tree, bitter bush, cattle bush or poison berry tree,^[2] is a weeping shrub or tree that is endemic to mostly inland, continental Australia.

Fragrant yellowish flowers and yellowish capsules with dark or orange-red seeds.

Grows to approx 10 m. Slow growing. It is drought- and frost-resistant. It can survive in areas with rainfall as low as 150 mm (5.9 in) per year. A resilient desert species, individuals may live for over a hundred years

Resiliant desert species.

 Has been and is tested for medicianal perposes, compounds have been identified, providing a strong case for the therapeutic benefits and potential cancer fighting properties of the plant. Some cytotoxic properties have also been identified in other studies.

Indigenous Australians used parts of the plant in various ways as medicine.

Uses varied from place to place and people to people.Some ate or chewed the gumthat oozed from branches, while others ground seeds into flour for food. Most commonly, the leaves, seed or wood were steeped in hot water and made into a poultice or a tea for medicinal uses, such as to relieve digestive issues, internal pain and cramping, combat chronic fatigue, induce lactation, treat colds, muscle sprains, eczema and other sources of itching.