What it looks like: Native Walnut is a rainforest tree that can sometimes grow up to 20 metres tall. It has shiny green leaves that are bluish underneath. Its pale green to cream flowers, which are sometimes perfumed, turn brown as they mature, and produce black fruit.

Native Walnut - Endiandra limnophila

Photo: © Dave Liddle

Where it lives: Native Walnut grows in swampy soils in well-developed rainforest, often along the edges of creeks. This rainforest tree is known only from the Tiwi Islands and Channel Point, in the Northern Territory, as well as at the tip of Cape York Peninsula in Queensland.

Importance as an indicator: The long term persistence of Native Walnut is one indicator of the health of the rainforest in which this species lives. The wet conditions it requires are particularly sensitive to changes in hydrology caused by unseasonably dry weather, vegetation clearance or water extraction. Drying out of the rainforest may allow incursions by fire. Feral pigs are also attracted to wet areas in rainforests, where they dig up the soil looking for roots and tubers, and prevent the recruitment of new rainforest plants.

Look after Native Walnut by protecting rainforest stands from clearance and disturbance. Make sure decisions about developments in the catchments consider impacts on groundwater availability. Control pigs with baits and traps.

Best Practice Management for Native Walnut

* Maintain tree cover * Control pest animals * Manage water extraction sustainably * More information is needed about this species