''Strychnos psilosperma'', known as the strychnine tree or threaded boxwood, is a shrub or small tree

endemic Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...

New South Wales New South Wales (commonly abbreviated as NSW) is a States and territories of Australia, state on the Eastern states of Australia, east coast of :Australia. It borders Queensland to the north, Victoria (state), Victoria to the south, and South ...

and

Queensland Queensland ( , commonly abbreviated as Qld) is a States and territories of Australia, state in northeastern Australia, and is the second-largest and third-most populous state in Australia. It is bordered by the Northern Territory, South Austr ...

Australia Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...

. It may reach a height of 18 metres. It occurs as far south as the

Clarence River, New South Wales The Clarence River (Bundjalung language, Bundjalung: ''Boorimbah'', Yaygir language, Yaygir: ''Ngunitiji'') is a river situated in the Northern Rivers district of New South Wales, Australia. It rises on the eastern slopes of the Great Dividing ...

to Cape York at the northernmost tip of Australia. The bark is grey, with glossy pointed leaves creating a thick canopy. Small white, scented flowers occur in the warmer months. Fruit are orange to red berries, ripening to black. All parts of this plant are toxic. It may be grown in full sun with good drainage. The habitat is semi-evergreen deciduous vine forest, or mixed eucalyptus forest. A common associate tree is the

Hoop Pine ''Araucaria cunninghamii'' is a species of ''Araucaria'' known as hoop pine. Other less commonly used names include colonial pine, Queensland pine, Dorrigo pine, Moreton Bay pine and Richmond River pine. The scientific name honours the botanist a ...

References

psilosperma Flora of New South Wales Flora of Queensland Ornamental trees Taxa named by Ferdinand von Mueller {{Gentianales-stub