Mimosa Absoluteacacia mearnsii Also known as, acacia dealbata or acacia decurrens var. dealbata The Sydney Black Wattle Tree. the flowers and small branch ends are used, with alcohol as the solvent, to extract this most exotic oil. It is viscous rich, dark yellow to orange, with a warm floral perfume. It is most used in high class perfume recipes, or as a perfume on its own. It is also seen in skin applications for moisturizing and nourishing.