of the family, MYRTACEAE.
The bundle of stamen in the middle of the flower, the five petals and 'inferior ovaries' (which means that when the fruit forms in the ovary, it forms beneath the flower) are typical of flowers in the MYRTACEAE family. You'll be familiar with such stamen in gum blossom and bottle brush. MYRTACEAE also have glands of oil in the leaves. Hold a gum leaf up the the light and you'll see little black dots. They're glands of oil, hence eucalyptus oil, tea-tree oil and the like.