''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 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 found elsew ...

New South Wales ) , nickname = , image_map = New South Wales in Australia.svg , map_caption = Location of New South Wales in AustraliaCoordinates: , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , es ...

and

Queensland ) , nickname = Sunshine State , image_map = Queensland in Australia.svg , map_caption = Location of Queensland in Australia , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , established_ ...

Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...

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

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

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 ...

References

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