Acacia auriculiformis, commonly known as Auri, Earleaf acacia, Earpo wattle, Northern black wattle, Papuan wattle, Tan wattle, is a fast-growing, crooked, gnarly and thorny tree in the family Fabaceae. It is native to Australia, Indonesia, and Papua New Guinea. It grows up to 30m tall.Acacia auriculiformis has about 47 000 seeds/kg.