What is "wallum"

Wallum, or wallum country, is an Australian ecosystem of coastal south-east Queensland, extending into north-eastern New South Wales. It is characterised by flora-rich shrubland and heathland on deep, nutrient-poor, acidic, sandy soils, and regular wildfire. Seasonal changes in the water table due to rainfall may create swamps. The name is derived from the Kabi word for the wallum banksia ( Banksia aemula).