Stachystemon

Stachystemon is a genus of nine species of flowering plants in the family Picrodendraceae, and is endemic to Western Australia. Plants in the genus Stachystemon are monoecious shrubs with simple, usually thickened leaves, and flowers arranged singly or in small groups in upper leaf axils, male flowers usually with four to six tepals (sepals and petals together), usually with seven to many stamens, and female flowers with four or six tepals and two styles in each flower....read more on Wikipedia.