Zanthoxylum brachyacanthum

About

Zanthoxylum brachyacanthum, known as thorny yellow-wood, satinwood, satin tree or scrub mulga, is a species of flowering plant in the family Rutaceae and is endemic to north-eastern Australia. It is a rainforest shrub or tree with thick, cone-shaped spines on the trunk and prickles on the branches, pinnate leaves, and male and female flowers arranged in panicles.

Summary from Wikipedia