Acronychia aberrans

About

Acronychia aberrans, commonly known as acid berry, lemon aspen, plasticine tree or plasticene aspen, is a species of medium-sized rainforest tree that is endemic to north-eastern Queensland. It has simple leaves on stems that are more or less square in cross-section, flowers in small groups in leaf axils and fleshy, more or less spherical fruit.

Summary from Wikipedia